# HG changeset patch
# User lana
# Date 1449077846 28800
# Node ID 84eaea8d05744d50d6528f56c9c0772ba69f3504
# Parent 5ac6287ec71aafe021cc839d8bc828108d23aaba# Parent cc9f05d3caf0c52b12a28ec6e267431360803775
Merge
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/make/BuildNashorn.gmk
--- a/nashorn/make/BuildNashorn.gmk Wed Jul 05 21:04:26 2017 +0200
+++ b/nashorn/make/BuildNashorn.gmk Wed Dec 02 09:37:26 2015 -0800
@@ -34,7 +34,7 @@
include TextFileProcessing.gmk
JDK_CLASSES := $(call PathList, $(strip $(addprefix $(JDK_OUTPUTDIR)/modules/, \
- java.base java.logging java.scripting)))
+ java.base java.logging java.scripting jdk.dynalink)))
NASHORN_JAR := $(IMAGES_OUTPUTDIR)/nashorn.jar
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/make/build.xml
--- a/nashorn/make/build.xml Wed Jul 05 21:04:26 2017 +0200
+++ b/nashorn/make/build.xml Wed Dec 02 09:37:26 2015 -0800
@@ -52,6 +52,14 @@
+
+
+
+
@@ -155,7 +163,7 @@
-
+
@@ -244,6 +252,7 @@
+
@@ -263,6 +272,18 @@
+
+
+
+
+
+
+
+
+
+
@@ -321,14 +342,20 @@
-
+
+
+
+
+
-
+
+
+
@@ -432,6 +459,8 @@
+
+
@@ -603,7 +632,7 @@
-
+
@@ -773,6 +802,20 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/make/nbproject/project.xml
--- a/nashorn/make/nbproject/project.xml Wed Jul 05 21:04:26 2017 +0200
+++ b/nashorn/make/nbproject/project.xml Wed Dec 02 09:37:26 2015 -0800
@@ -50,6 +50,10 @@
../src/jdk.scripting.nashorn/share/classes
+
+ ../src/jdk.scripting.nashorn.shell/share/classes
+
+ java../test/src
@@ -74,8 +78,14 @@
UTF-8
-
- ../src/jdk.scripting.nashorn.shell/share/classes
+
+ java
+ ../src/jdk.dynalink/share/classes
+ UTF-8
+
+
+
+ ../src/jdk.dynalink/share/classes
@@ -153,6 +163,10 @@
../src/jdk.scripting.nashorn.shell/share/classes
+
+
+ ../src/jdk.dynalink/share/classes
+ build.xml
@@ -189,6 +203,10 @@
../src/jdk.scripting.nashorn.shell/share/classes1.8
+
+ ../src/jdk.dynalink/share/classes
+ 1.8
+
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/make/project.properties
--- a/nashorn/make/project.properties Wed Jul 05 21:04:26 2017 +0200
+++ b/nashorn/make/project.properties Wed Dec 02 09:37:26 2015 -0800
@@ -85,6 +85,7 @@
# jars refererred
file.reference.testng.jar=${test.lib}${file.separator}testng.jar
+file.reference.asmtools.jar=${test.lib}${file.separator}asmtools-60.jar
# Set testng verbose level
# From TestNG docs: "the verbosity level (0 to 10 where 10 is most detailed)
@@ -211,6 +212,12 @@
# file containing test262 tests to be excluded
# test262-test-sys-prop.test.js.excludes.file=${test262.dir}/test/config/excludelist.xml
+# list of test262 files to be excluded
+test262-test-sys-prop.test.js.exclude.list=\
+ ${test262.suite.dir}/ch07/7.4/S7.4_A6.js \
+ ${test262.suite.dir}/ch07/7.8/7.8.5/S7.8.5_A1.4_T2.js \
+ ${test262.suite.dir}/ch15/15.2/15.2.3/15.2.3.6/15.2.3.6-4-170.js
+
# list of test262 test dirs to be excluded
test262-test-sys-prop.test.js.exclude.dir=\
${test262.suite.dir}/intl402/ \
@@ -269,10 +276,12 @@
${nashorn.internal.tests.jar}${path.separator}\
${nashorn.api.tests.jar}
+dynalink.module.src.dir=src/jdk.dynalink/share/classes
nashorn.module.src.dir=src/jdk.scripting.nashorn/share/classes
nashorn.shell.module.src.dir=src/jdk.scripting.nashorn.shell/share/classes
-src.dir=${nashorn.module.src.dir}${path.separator}\
+src.dir=${dynalink.module.src.dir}${path.separator}\
+ ${nashorn.module.src.dir}${path.separator}\
${nashorn.shell.module.src.dir}${path.separator}\
${jdk.jline.src.dir}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/samples/DOMLinkerExporter.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/DOMLinkerExporter.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,162 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import java.util.ArrayList;
+import java.util.List;
+import jdk.dynalink.CallSiteDescriptor;
+import jdk.dynalink.CompositeOperation;
+import jdk.dynalink.NamedOperation;
+import jdk.dynalink.Operation;
+import jdk.dynalink.StandardOperation;
+import jdk.dynalink.linker.GuardingDynamicLinker;
+import jdk.dynalink.linker.GuardingDynamicLinkerExporter;
+import jdk.dynalink.linker.GuardedInvocation;
+import jdk.dynalink.linker.TypeBasedGuardingDynamicLinker;
+import jdk.dynalink.linker.LinkRequest;
+import jdk.dynalink.linker.LinkerServices;
+import jdk.dynalink.linker.support.Guards;
+import jdk.dynalink.linker.support.Lookup;
+import org.w3c.dom.Attr;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+import org.w3c.dom.Element;
+
+/**
+ * This is a dynalink pluggable linker (see http://openjdk.java.net/jeps/276).
+ * This linker handles XML DOM Element objects specially. This linker links
+ * special properties starting with "_" and treats those as child element names
+ * to access. This kind of child element access makes it easy to write XML DOM
+ * accessing scripts. See for example ./dom_linker_gutenberg.js.
+ */
+public final class DOMLinkerExporter extends GuardingDynamicLinkerExporter {
+ static {
+ System.out.println("pluggable dynalink DOM linker loaded");
+ }
+
+ // return List of child Elements of the given Element matching the given name.
+ private static List getChildElements(Element elem, String name) {
+ NodeList nodeList = elem.getChildNodes();
+ List childElems = new ArrayList<>();
+ int len = nodeList.getLength();
+ for (int i = 0; i < len; i++) {
+ Node node = nodeList.item(i);
+ if (node.getNodeType() == Node.ELEMENT_NODE &&
+ ((Element)node).getTagName().equals(name)) {
+ childElems.add((Element)node);
+ }
+ }
+ return childElems;
+ }
+
+ // method that returns either unique child element matching given name
+ // or a list of child elements of that name (if there are more than one matches).
+ public static Object getElementsByName(Object elem, final String name) {
+ List elems = getChildElements((Element)elem, name);
+ return elems.size() == 1? elems.get(0) : elems;
+ }
+
+ // method to extract text context under a given DOM Element
+ public static Object getElementText(Object elem) {
+ NodeList nodeList = ((Element)elem).getChildNodes();
+ int len = nodeList.getLength();
+ StringBuilder text = new StringBuilder();
+ for (int i = 0; i < len; i++) {
+ Node node = nodeList.item(i);
+ if (node.getNodeType() == Node.TEXT_NODE) {
+ text.append(node.getNodeValue());
+ }
+ }
+ return text.toString();
+ }
+
+ private static final MethodHandle ELEMENTS_BY_NAME;
+ private static final MethodHandle ELEMENT_TEXT;
+ private static final MethodHandle IS_ELEMENT;
+ static {
+ ELEMENTS_BY_NAME = Lookup.PUBLIC.findStatic(DOMLinkerExporter.class,
+ "getElementsByName",
+ MethodType.methodType(Object.class, Object.class, String.class));
+ ELEMENT_TEXT = Lookup.PUBLIC.findStatic(DOMLinkerExporter.class,
+ "getElementText",
+ MethodType.methodType(Object.class, Object.class));
+ IS_ELEMENT = Guards.isInstance(Element.class, MethodType.methodType(Boolean.TYPE, Object.class));
+ }
+
+ @Override
+ public List get() {
+ final ArrayList linkers = new ArrayList<>();
+ linkers.add(new TypeBasedGuardingDynamicLinker() {
+ @Override
+ public boolean canLinkType(final Class type) {
+ return Element.class.isAssignableFrom(type);
+ }
+
+ @Override
+ public GuardedInvocation getGuardedInvocation(LinkRequest request,
+ LinkerServices linkerServices) throws Exception {
+ final Object self = request.getReceiver();
+ if (! (self instanceof Element)) {
+ return null;
+ }
+
+ CallSiteDescriptor desc = request.getCallSiteDescriptor();
+ Operation op = desc.getOperation();
+ Object name = NamedOperation.getName(op);
+ boolean getProp = CompositeOperation.contains(
+ NamedOperation.getBaseOperation(op),
+ StandardOperation.GET_PROPERTY);
+ if (getProp && name instanceof String) {
+ String nameStr = (String)name;
+
+ // Treat names starting with "_" as special names.
+ // Everything else is linked other dynalink bean linker!
+ // This avoids collision with Java methods of org.w3c.dom.Element class
+ // Assumption is that Java APIs won't start with "_" character!!
+ if (nameStr.equals("_")) {
+ // short-hand to get text content under a given DOM Element
+ return new GuardedInvocation(ELEMENT_TEXT, IS_ELEMENT);
+ } else if (nameStr.startsWith("_")) {
+ return new GuardedInvocation(
+ MethodHandles.insertArguments(ELEMENTS_BY_NAME, 1, nameStr.substring(1)),
+ IS_ELEMENT);
+ }
+
+ }
+
+ return null;
+ }
+ });
+ return linkers;
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/samples/META-INF/services/jdk.dynalink.linker.GuardingDynamicLinkerExporter
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/META-INF/services/jdk.dynalink.linker.GuardingDynamicLinkerExporter Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,2 @@
+DOMLinkerExporter
+UnderscoreNameLinkerExporter
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/samples/Main.asm
--- a/nashorn/samples/Main.asm Wed Jul 05 21:04:26 2017 +0200
+++ b/nashorn/samples/Main.asm Wed Dec 02 09:37:26 2015 -0800
@@ -38,66 +38,128 @@
//
// See also: https://wiki.openjdk.java.net/display/CodeTools/asmtools
//
-// NOTE: Uses nashorn internals and so *may* break with later nashorn!
+// NOTE: Uses dynalink API defined by JEP-276 (http://openjdk.java.net/jeps/276)
super public class Main
version 52:0
{
+private static final Field linker:"Ljdk/dynalink/DynamicLinker;";
+/*
+ static {
+ // create dynalink linker factory
+ final DynamicLinkerFactory factory = new DynamicLinkerFactory();
+
+ // create standard linker that can handle Java POJOs
+ linker = factory.createLinker();
+ }
+*/
+static Method "":"()V"
+ stack 2 locals 1
+{
+ new class jdk/dynalink/DynamicLinkerFactory;
+ dup;
+ invokespecial Method jdk/dynalink/DynamicLinkerFactory."":"()V";
+ astore_0;
+ aload_0;
+ invokevirtual Method jdk/dynalink/DynamicLinkerFactory.createLinker:"()Ljdk/dynalink/DynamicLinker;";
+ putstatic Field linker:"Ljdk/dynalink/DynamicLinker;";
+ return;
+}
+
+/*
+ // Bootstrap method used with invokedynamic methods
+
+ public static CallSite bootstrap(MethodHandles.Lookup caller, String name, MethodType type) {
+ // use dynalink linker to perform the actual linking
+ return linker.link(
+ new SimpleRelinkableCallSite(
+ new CallSiteDescriptor(
+ MethodHandles.publicLookup(),
+ new NamedOperation(StandardOperation.GET_PROPERTY, name), type)
+ )
+ );
+ }
+
+ */
+public static Method bootstrap:"(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;"
+ stack 10 locals 3
+{
+ getstatic Field linker:"Ljdk/dynalink/DynamicLinker;";
+ new class jdk/dynalink/support/SimpleRelinkableCallSite;
+ dup;
+ new class jdk/dynalink/CallSiteDescriptor;
+ dup;
+ invokestatic Method java/lang/invoke/MethodHandles.publicLookup:"()Ljava/lang/invoke/MethodHandles$Lookup;";
+ new class jdk/dynalink/NamedOperation;
+ dup;
+ getstatic Field jdk/dynalink/StandardOperation.GET_PROPERTY:"Ljdk/dynalink/StandardOperation;";
+ aload_1;
+ invokespecial Method jdk/dynalink/NamedOperation."":"(Ljdk/dynalink/Operation;Ljava/lang/Object;)V";
+ aload_2;
+ invokespecial Method jdk/dynalink/CallSiteDescriptor."":"(Ljava/lang/invoke/MethodHandles$Lookup;Ljdk/dynalink/Operation;Ljava/lang/invoke/MethodType;)V";
+ invokespecial Method jdk/dynalink/support/SimpleRelinkableCallSite."":"(Ljdk/dynalink/CallSiteDescriptor;)V";
+ invokevirtual Method jdk/dynalink/DynamicLinker.link:"(Ljdk/dynalink/RelinkableCallSite;)Ljdk/dynalink/RelinkableCallSite;";
+ checkcast class java/lang/invoke/CallSite;
+ areturn;
+}
+
+// default constructor that does nothing!
public Method "":"()V"
stack 1 locals 1
{
- aload_0;
- invokespecial Method java/lang/Object."":"()V";
- return;
+ aload_0;
+ invokespecial Method java/lang/Object."":"()V";
+ return;
}
public static Method main:"([Ljava/lang/String;)V"
stack 2 locals 2
{
- // List l = new ArrayList();
- new class java/util/ArrayList;
- dup;
- invokespecial Method java/util/ArrayList."":"()V";
- astore_1;
- aload_1;
+ // List l = new ArrayList();
+ new class java/util/ArrayList;
+ dup;
+ invokespecial Method java/util/ArrayList."":"()V";
+ astore_1;
+ aload_1;
- // l.add("hello");
- ldc String "hello";
- invokeinterface InterfaceMethod java/util/List.add:"(Ljava/lang/Object;)Z", 2;
- pop;
+ // l.add("hello");
+ ldc String "hello";
+ invokeinterface InterfaceMethod java/util/List.add:"(Ljava/lang/Object;)Z", 2;
+ pop;
- // l.add("world");
- aload_1;
- ldc String "world";
- invokeinterface InterfaceMethod java/util/List.add:"(Ljava/lang/Object;)Z", 2;
- pop;
+ // l.add("world");
+ aload_1;
+ ldc String "world";
+ invokeinterface InterfaceMethod java/util/List.add:"(Ljava/lang/Object;)Z", 2;
+ pop;
- // printLength(l);
- aload_1;
- invokestatic Method printLength:"(Ljava/lang/Object;)V";
+ // printLength(l);
+ aload_1;
+ invokestatic Method printLength:"(Ljava/lang/Object;)V";
- // printLength(args); // args is argument of main method
- aload_0;
- invokestatic Method printLength:"(Ljava/lang/Object;)V";
- return;
+ // printLength(args); // args is argument of main method
+ aload_0;
+ invokestatic Method printLength:"(Ljava/lang/Object;)V";
+ return;
}
private static Method printLength:"(Ljava/lang/Object;)V"
stack 2 locals 1
{
- getstatic Field java/lang/System.out:"Ljava/io/PrintStream;";
- aload_0;
-
- // Using nashorn embedded dynalink linker with the following invokedynamic
- // 'length' property on a bean - arrays, lists supported
+ getstatic Field java/lang/System.out:"Ljava/io/PrintStream;";
+ aload_0;
- invokedynamic InvokeDynamic REF_invokeStatic:jdk/nashorn/internal/runtime/linker/Bootstrap.bootstrap:"(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;I)Ljava/lang/invoke/CallSite;":"dyn:getProp|getElem|getMethod:length":"(Ljava/lang/Object;)Ljava/lang/Object;" int 0;
+ // Using bootstrap method in this class with the following invokedynamic
+ // which uses dynalink linker. Dynalink's bean linker handles Java beans.
+ // 'length' property on a bean - arrays, lists supported
- // print 'length' value
- invokevirtual Method java/io/PrintStream.println:"(Ljava/lang/Object;)V";
- return;
+ invokedynamic InvokeDynamic REF_invokeStatic:Main.bootstrap:"(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;":"length":"(Ljava/lang/Object;)Ljava/lang/Object;";
+
+ // print 'length' value
+ invokevirtual Method java/io/PrintStream.println:"(Ljava/lang/Object;)V";
+ return;
}
} // end Class Main
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/samples/Main.class
Binary file nashorn/samples/Main.class has changed
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/samples/UnderscoreNameLinkerExporter.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/UnderscoreNameLinkerExporter.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.regex.Pattern;
+import java.util.regex.Matcher;
+import jdk.dynalink.CallSiteDescriptor;
+import jdk.dynalink.CompositeOperation;
+import jdk.dynalink.NamedOperation;
+import jdk.dynalink.Operation;
+import jdk.dynalink.CompositeOperation;
+import jdk.dynalink.StandardOperation;
+import jdk.dynalink.linker.GuardingDynamicLinker;
+import jdk.dynalink.linker.GuardingDynamicLinkerExporter;
+import jdk.dynalink.linker.GuardedInvocation;
+import jdk.dynalink.linker.LinkRequest;
+import jdk.dynalink.linker.LinkerServices;
+import jdk.dynalink.linker.support.SimpleLinkRequest;
+
+/**
+ * This is a dynalink pluggable linker (see http://openjdk.java.net/jeps/276).
+ * This linker translater underscore_separated method names to CamelCase names
+ * used in Java APIs.
+ */
+public final class UnderscoreNameLinkerExporter extends GuardingDynamicLinkerExporter {
+ static {
+ System.out.println("pluggable dynalink underscore name linker loaded");
+ }
+
+ private static final Pattern UNDERSCORE_NAME = Pattern.compile("_(.)");
+
+ // translate underscore_separated name as a CamelCase name
+ private static String translateToCamelCase(String name) {
+ Matcher m = UNDERSCORE_NAME.matcher(name);
+ StringBuilder buf = new StringBuilder();
+ while (m.find()) {
+ m.appendReplacement(buf, m.group(1).toUpperCase());
+ }
+ m.appendTail(buf);
+ return buf.toString();
+ }
+
+ // locate the first standard operation from the call descriptor
+ private static StandardOperation getFirstStandardOperation(final CallSiteDescriptor desc) {
+ final Operation base = NamedOperation.getBaseOperation(desc.getOperation());
+ if (base instanceof StandardOperation) {
+ return (StandardOperation)base;
+ } else if (base instanceof CompositeOperation) {
+ final CompositeOperation cop = (CompositeOperation)base;
+ for(int i = 0; i < cop.getOperationCount(); ++i) {
+ final Operation op = cop.getOperation(i);
+ if (op instanceof StandardOperation) {
+ return (StandardOperation)op;
+ }
+ }
+ }
+ return null;
+ }
+
+ @Override
+ public List get() {
+ final ArrayList linkers = new ArrayList<>();
+ linkers.add(new GuardingDynamicLinker() {
+ @Override
+ public GuardedInvocation getGuardedInvocation(LinkRequest request,
+ LinkerServices linkerServices) throws Exception {
+ final Object self = request.getReceiver();
+ CallSiteDescriptor desc = request.getCallSiteDescriptor();
+ Operation op = desc.getOperation();
+ Object name = NamedOperation.getName(op);
+ // is this a named GET_METHOD?
+ boolean isGetMethod = getFirstStandardOperation(desc) == StandardOperation.GET_METHOD;
+ if (isGetMethod && name instanceof String) {
+ String str = (String)name;
+ if (str.indexOf('_') == -1) {
+ return null;
+ }
+
+ String nameStr = translateToCamelCase(str);
+ // create a new call descriptor to use translated name
+ CallSiteDescriptor newDesc = new CallSiteDescriptor(
+ desc.getLookup(),
+ new NamedOperation(NamedOperation.getBaseOperation(op), nameStr),
+ desc.getMethodType());
+ // create a new Link request to link the call site with translated name
+ LinkRequest newRequest = new SimpleLinkRequest(newDesc,
+ request.isCallSiteUnstable(), request.getArguments());
+ // return guarded invocation linking the translated request
+ return linkerServices.getGuardedInvocation(newRequest);
+ }
+
+ return null;
+ }
+ });
+ return linkers;
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/samples/dom_linker.js
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/dom_linker.js Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,48 @@
+#! simple dom linker example
+
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// This script assumes you've built jdk9 or using latest
+// jdk9 image and put the 'bin' directory in the PATH
+
+$EXEC.throwOnError=true
+
+// compile DOMLinkerExporter
+`javac -cp ../dist/nashorn.jar DOMLinkerExporter.java`
+
+// make a jar file out of pluggable linker
+`jar cvf dom_linker.jar DOMLinkerExporter*.class META-INF/`
+
+// run a sample script that uses pluggable linker
+// but make sure classpath points to the pluggable linker jar!
+
+`jjs -cp dom_linker.jar dom_linker_gutenberg.js`
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/samples/dom_linker_gutenberg.js
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/dom_linker_gutenberg.js Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,117 @@
+#// Usage: jjs -cp dom_linker.jar -scripting dom_linker_gutenberg.js
+
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// This script depends on DOM Element dynalink linker!
+// Without that linker, this script will fail to run!
+
+// Simple example that demonstrates reading XML Rss feed
+// to generate a HTML file from script and show it by browser.
+// Uses XML DOM parser along with DOM element pluggable dynalink linker
+// for ease of navigation of DOM (child) elements by name.
+
+// Java classes used
+var DocBuilderFac = Java.type("javax.xml.parsers.DocumentBuilderFactory");
+var Node = Java.type("org.w3c.dom.Node");
+var File = Java.type("java.io.File");
+var FileWriter = Java.type("java.io.FileWriter");
+var PrintWriter = Java.type("java.io.PrintWriter");
+
+// parse XML from uri and return Document
+function parseXML(uri) {
+ var docBuilder = DocBuilderFac.newInstance().newDocumentBuilder();
+ return docBuilder["parse(java.lang.String)"](uri);
+}
+
+// generate HTML using here-doc and string interpolation
+function getBooksHtml() {
+ var doc = parseXML("http://www.gutenberg.org/cache/epub/feeds/today.rss");
+ // wrap document root Element as script convenient object
+ var rss = doc.documentElement;
+
+ var str = <
+${rss._channel._title._}
+
+
${rss._channel._description._}
+
+Published on ${rss._channel._pubDate._}
+
+
+HEAD
+
+ var items = rss._channel._item;
+ for each (var i in items) {
+ str += <
+
+
+
+LIST
+ }
+ str += <
+
+
+END
+ return str;
+}
+
+// write the string to the given file
+function writeTo(file, str) {
+ var w = new PrintWriter(new FileWriter(file));
+ try {
+ w.print(str);
+ } finally {
+ w.close();
+ }
+}
+
+// generate books HTML
+var str = getBooksHtml();
+
+// write to file. __DIR__ is directory where
+// this script is stored.
+var file = new File(__DIR__ + "books.html");
+writeTo(file, str);
+
+// show it by desktop browser
+try {
+ var Desktop = Java.type("java.awt.Desktop");
+ Desktop.desktop.browse(file.toURI());
+} catch (e) {
+ print(e);
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/samples/underscore.js
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/underscore.js Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,42 @@
+#// Usage: jjs -cp underscore_linker.jar -scripting underscore.js
+
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// This script depends on underscore name to CamelCase name
+// translator dynalink linker! Without that linker, this script
+// will fail to run!
+
+var S = java.util.stream.Stream
+S.of(45, 54654,546,435).for_each(print)
+print("hello".char_at(2))
+print(4354.45.value_of())
+print(java.lang.System.get_properties())
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/samples/underscore_linker.js
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/samples/underscore_linker.js Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,50 @@
+# underscore name translator dynalink linker example
+
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of Oracle nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// This script assumes you've built jdk9 or using latest
+// jdk9 image and put the 'bin' directory in the PATH
+
+$EXEC.throwOnError=true
+
+// compile UnderscoreNameLinkerExporter
+`javac -cp ../dist/nashorn.jar UnderscoreNameLinkerExporter.java`
+
+// make a jar file out of pluggable linker
+`jar cvf underscore_linker.jar UnderscoreNameLinkerExporter*.class META-INF/`
+
+// run a sample script that uses pluggable linker
+// but make sure classpath points to the pluggable linker jar!
+
+`jjs -cp underscore_linker.jar underscore.js`
+print($OUT)
+
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/CallSiteDescriptor.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/CallSiteDescriptor.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,287 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink;
+
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodHandles.Lookup;
+import java.lang.invoke.MethodType;
+import java.util.Objects;
+
+/**
+ * Call site descriptors contain all the information necessary for linking a
+ * call site. This information is normally passed as parameters to bootstrap
+ * methods and consists of the {@code MethodHandles.Lookup} object on the caller
+ * class in which the call site occurs, the dynamic operation at the call
+ * site, and the method type of the call site. {@code CallSiteDescriptor}
+ * objects are used in Dynalink to capture and store these parameters for
+ * subsequent use by the {@link DynamicLinker}.
+ *
+ * The constructors of built-in {@link RelinkableCallSite} implementations all
+ * take a call site descriptor.
+ *
+ * Call site descriptors must be immutable. You can use this class as-is or you
+ * can subclass it, especially if you need to add further information to the
+ * descriptors (typically, values passed in additional parameters to the
+ * bootstrap method. Since the descriptors must be immutable, you can set up a
+ * cache for equivalent descriptors to have the call sites share them.
+ */
+public class CallSiteDescriptor {
+ private final MethodHandles.Lookup lookup;
+ private final Operation operation;
+ private final MethodType methodType;
+
+ /**
+ * The name of a runtime permission to invoke the {@link #getLookup()}
+ * method.
+ */
+ public static final String GET_LOOKUP_PERMISSION_NAME = "dynalink.getLookup";
+
+ private static final RuntimePermission GET_LOOKUP_PERMISSION = new RuntimePermission(GET_LOOKUP_PERMISSION_NAME);
+
+ /**
+ * Creates a new call site descriptor.
+ * @param lookup the lookup object describing the class the call site belongs to.
+ * @param operation the dynamic operation at the call site.
+ * @param methodType the method type of the call site.
+ */
+ public CallSiteDescriptor(final Lookup lookup, final Operation operation, final MethodType methodType) {
+ this.lookup = Objects.requireNonNull(lookup, "lookup");
+ this.operation = Objects.requireNonNull(operation, "name");
+ this.methodType = Objects.requireNonNull(methodType, "methodType");
+ }
+
+ /**
+ * Returns the operation at the call site.
+ * @return the operation at the call site.
+ */
+ public final Operation getOperation() {
+ return operation;
+ }
+
+ /**
+ * The type of the method at the call site.
+ *
+ * @return type of the method at the call site.
+ */
+ public final MethodType getMethodType() {
+ return methodType;
+ }
+
+ /**
+ * Returns the lookup that should be used to find method handles to set as
+ * targets of the call site described by this descriptor. When creating
+ * descriptors from a {@link java.lang.invoke} bootstrap method, it should
+ * be the lookup passed to the bootstrap.
+ * @return the lookup that should be used to find method handles to set as
+ * targets of the call site described by this descriptor.
+ * @throws SecurityException if the lookup isn't the
+ * {@link MethodHandles#publicLookup()} and a security manager is present,
+ * and a check for {@code RuntimePermission("dynalink.getLookup")} fails.
+ */
+ public final Lookup getLookup() {
+ final SecurityManager sm = System.getSecurityManager();
+ if (sm != null && lookup != MethodHandles.publicLookup()) {
+ sm.checkPermission(GET_LOOKUP_PERMISSION);
+ }
+ return lookup;
+ }
+
+ /**
+ * Returns the value of {@link #getLookup()} without a security check. Can
+ * be used by subclasses to access the lookup quickly.
+ * @return same as returned value of {@link #getLookup()}.
+ */
+ protected final Lookup getLookupPrivileged() {
+ return lookup;
+ }
+
+ /**
+ * Creates a new call site descriptor from this descriptor, which is
+ * identical to this, except it changes the method type. Invokes
+ * {@link #changeMethodTypeInternal(MethodType)} and checks that it returns
+ * a descriptor of the same class as this descriptor.
+ *
+ * @param newMethodType the new method type
+ * @return a new call site descriptor, with the method type changed.
+ * @throws RuntimeException if {@link #changeMethodTypeInternal(MethodType)}
+ * returned a descriptor of different class than this object.
+ * @throws NullPointerException if {@link #changeMethodTypeInternal(MethodType)}
+ * returned null.
+ */
+ public final CallSiteDescriptor changeMethodType(final MethodType newMethodType) {
+ final CallSiteDescriptor changed = Objects.requireNonNull(
+ changeMethodTypeInternal(newMethodType),
+ "changeMethodTypeInternal() must not return null.");
+
+ if (getClass() != changed.getClass()) {
+ throw new RuntimeException(
+ "changeMethodTypeInternal() must return an object of the same class it is invoked on.");
+ }
+
+ return changed;
+ }
+
+ /**
+ * Creates a new call site descriptor from this descriptor, which is
+ * identical to this, except it changes the method type. Subclasses must
+ * override this method to return an object of their exact class.
+ *
+ * @param newMethodType the new method type
+ * @return a new call site descriptor, with the method type changed.
+ */
+ protected CallSiteDescriptor changeMethodTypeInternal(final MethodType newMethodType) {
+ return new CallSiteDescriptor(lookup, operation, newMethodType);
+ }
+
+ /**
+ * Returns true if this call site descriptor is equal to the passed object.
+ * It is considered equal if the other object is of the exact same class,
+ * their operations and method types are equal, and their lookups have the
+ * same {@link java.lang.invoke.MethodHandles.Lookup#lookupClass()} and
+ * {@link java.lang.invoke.MethodHandles.Lookup#lookupModes()}.
+ */
+ @Override
+ public boolean equals(final Object obj) {
+ if (obj == this) {
+ return true;
+ } else if (obj == null) {
+ return false;
+ } else if (obj.getClass() != getClass()) {
+ return false;
+ }
+ final CallSiteDescriptor other = (CallSiteDescriptor)obj;
+ return operation.equals(other.operation) &&
+ methodType.equals(other.methodType) &&
+ lookupsEqual(lookup, other.lookup);
+ }
+
+ /**
+ * Compares two lookup objects for value-based equality. They are considered
+ * equal if they have the same
+ * {@link java.lang.invoke.MethodHandles.Lookup#lookupClass()} and
+ * {@link java.lang.invoke.MethodHandles.Lookup#lookupModes()}.
+ * @param l1 first lookup
+ * @param l2 second lookup
+ * @return true if the two lookups are equal, false otherwise.
+ */
+ private static boolean lookupsEqual(final Lookup l1, final Lookup l2) {
+ return l1.lookupClass() == l2.lookupClass() && l1.lookupModes() == l2.lookupModes();
+ }
+
+ /**
+ * Returns a value-based hash code of this call site descriptor computed
+ * from its operation, method type, and lookup object's lookup class and
+ * lookup modes.
+ * @return value-based hash code for this call site descriptor.
+ */
+ @Override
+ public int hashCode() {
+ return operation.hashCode() + 31 * methodType.hashCode() + 31 * 31 * lookupHashCode(lookup);
+ }
+
+ /**
+ * Returns a value-based hash code for the passed lookup object. It is
+ * based on the lookup object's
+ * {@link java.lang.invoke.MethodHandles.Lookup#lookupClass()} and
+ * {@link java.lang.invoke.MethodHandles.Lookup#lookupModes()} values.
+ * @param lookup the lookup object.
+ * @return a hash code for the object..
+ */
+ private static int lookupHashCode(final Lookup lookup) {
+ return lookup.lookupClass().hashCode() + 31 * lookup.lookupModes();
+ }
+
+ /**
+ * Returns the string representation of this call site descriptor, of the
+ * format {@code name(parameterTypes)returnType@lookup}.
+ */
+ @Override
+ public String toString() {
+ final String mt = methodType.toString();
+ final String l = lookup.toString();
+ final String o = operation.toString();
+ final StringBuilder b = new StringBuilder(o.length() + mt.length() + 1 + l.length());
+ return b.append(o).append(mt).append('@').append(l).toString();
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/ClassMap.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/ClassMap.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,183 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink;
+
+import java.lang.ref.Reference;
+import java.lang.ref.SoftReference;
+import java.security.AccessControlContext;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.util.Map;
+import java.util.WeakHashMap;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+import jdk.dynalink.internal.AccessControlContextFactory;
+import jdk.dynalink.internal.InternalTypeUtilities;
+
+/**
+ * A dual map that can either strongly or weakly reference a given class depending on whether the class is visible from
+ * a class loader or not.
+ *
+ * @param the type of the values in the map
+ */
+abstract class ClassMap {
+ private static final AccessControlContext GET_CLASS_LOADER_CONTEXT =
+ AccessControlContextFactory.createAccessControlContext("getClassLoader");
+
+ private final ConcurrentMap, T> map = new ConcurrentHashMap<>();
+ private final Map, Reference> weakMap = new WeakHashMap<>();
+ private final ClassLoader classLoader;
+
+ /**
+ * Creates a new class map. It will use strong references for all keys and values where the key is a class visible
+ * from the class loader, and will use weak keys and soft values for all other classes.
+ *
+ * @param classLoader the classloader that determines strong referenceability.
+ */
+ ClassMap(final ClassLoader classLoader) {
+ this.classLoader = classLoader;
+ }
+
+ /**
+ * Compute the value associated with the given class. It is possible that the method will be invoked several times
+ * (or even concurrently) for the same class parameter.
+ *
+ * @param clazz the class to compute the value for
+ * @return the return value. Must not be null.
+ */
+ abstract T computeValue(Class clazz);
+
+ /**
+ * Returns the value associated with the class
+ *
+ * @param clazz the class
+ * @return the value associated with the class
+ */
+ T get(final Class clazz) {
+ // Check in fastest first - objects we're allowed to strongly reference
+ final T v = map.get(clazz);
+ if(v != null) {
+ return v;
+ }
+ // Check objects we're not allowed to strongly reference
+ Reference ref;
+ synchronized(weakMap) {
+ ref = weakMap.get(clazz);
+ }
+ if(ref != null) {
+ final T refv = ref.get();
+ if(refv != null) {
+ return refv;
+ }
+ }
+ // Not found in either place; create a new value
+ final T newV = computeValue(clazz);
+ assert newV != null;
+
+ final Boolean canReferenceDirectly = AccessController.doPrivileged(new PrivilegedAction() {
+ @Override
+ public Boolean run() {
+ return InternalTypeUtilities.canReferenceDirectly(classLoader, clazz.getClassLoader());
+ }
+ }, GET_CLASS_LOADER_CONTEXT);
+
+ // If allowed to strongly reference, put it in the fast map
+ if(canReferenceDirectly) {
+ final T oldV = map.putIfAbsent(clazz, newV);
+ return oldV != null ? oldV : newV;
+ }
+ // Otherwise, put it into the weak map
+ synchronized(weakMap) {
+ ref = weakMap.get(clazz);
+ if(ref != null) {
+ final T oldV = ref.get();
+ if(oldV != null) {
+ return oldV;
+ }
+ }
+ weakMap.put(clazz, new SoftReference<>(newV));
+ return newV;
+ }
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/CompositeOperation.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/CompositeOperation.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,297 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2015 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink;
+
+import java.util.Arrays;
+import java.util.Objects;
+
+/**
+ * Describes an operation that is composed of at least two other operations. The
+ * component operations are treated as alternatives to each other in order of
+ * preference. The semantics of the composite operation is "first successful".
+ * That is, a composite of {@code GET_PROPERTY|GET_ELEMENT:color} should be
+ * interpreted as get the property named "color" on the object, but if the
+ * property does not exist, then get the collection element named "color"
+ * instead.
+ *
+ * Composite operations are helpful in implementation of languages that
+ * don't distinguish between one or more of the property, method, and element
+ * namespaces, or when expressing operations against objects that can be
+ * considered both ordinary objects and collections, e.g. Java
+ * {@link java.util.Map} objects. A composite operation
+ * {@code GET_PROPERTY|GET_ELEMENT:empty} against a Java map will always match
+ * the {@link java.util.Map#isEmpty()} property, but
+ * {@code GET_ELEMENT|GET_PROPERTY:empty} will actually match a map element with
+ * key {@code "empty"} if the map contains that key, and only fall back to the
+ * {@code isEmpty()} property getter if the map does not contain the key. If
+ * the source language mandates this semantics, it can be easily achieved using
+ * composite operations.
+ *
+ * Even if the language itself doesn't distinguish between some of the
+ * namespaces, it can be helpful to map different syntaxes to different
+ * compositions. E.g. the source expression {@code obj.color} could map to
+ * {@code GET_PROPERTY|GET_ELEMENT|GET_METHOD:color}, but a different source
+ * expression that looks like collection element access {@code obj[key]} could
+ * be expressed instead as {@code GET_ELEMENT|GET_PROPERTY|GET_METHOD}.
+ * Finally, if the retrieved value is subsequently called, then it makes sense
+ * to bring {@code GET_METHOD} to the front of the list: the getter part of the
+ * source expression {@code obj.color()} should be
+ * {@code GET_METHOD|GET_PROPERTY|GET_ELEMENT:color} and the one for
+ * {@code obj[key]()} should be {@code GET_METHOD|GET_ELEMENT|GET_PROPERTY}.
+ *
+ * The elements of a composite operation can not be composites or named
+ * operations, but rather simple operations such are elements of
+ * {@link StandardOperation}. A composite operation itself can serve as the base
+ * operation of a named operation, though; a typical way to construct e.g. the
+ * {@code GET_ELEMENT|GET_PROPERTY:empty} from above would be:
+ *
+ * Not all compositions make sense. Typically, any combination in any order of
+ * standard getter operations {@code GET_PROPERTY}, {@code GET_ELEMENT}, and
+ * {@code GET_METHOD} make sense, as do combinations of {@code SET_PROPERTY} and
+ * {@code SET_ELEMENT}; other standard operations should not be combined. The
+ * constructor will allow any combination of operations, though.
+ */
+public final class CompositeOperation implements Operation {
+ private final Operation[] operations;
+
+ /**
+ * Constructs a new composite operation.
+ * @param operations the components for this composite operation. The passed
+ * array will be cloned.
+ * @throws IllegalArgumentException if less than two components are
+ * specified, or any component is itself a {@link CompositeOperation} or a
+ * {@link NamedOperation}.
+ * @throws NullPointerException if either the operations array or any of its
+ * elements are {@code null}.
+ */
+ public CompositeOperation(final Operation... operations) {
+ Objects.requireNonNull(operations, "operations array is null");
+ if (operations.length < 2) {
+ throw new IllegalArgumentException("Must have at least two operations");
+ }
+ final Operation[] clonedOps = operations.clone();
+ for(int i = 0; i < clonedOps.length; ++i) {
+ final Operation op = clonedOps[i];
+ if (op == null) {
+ throw new NullPointerException("operations[" + i + "] is null");
+ } else if (op instanceof NamedOperation) {
+ throw new IllegalArgumentException("operations[" + i + "] is a NamedOperation");
+ } else if (op instanceof CompositeOperation) {
+ throw new IllegalArgumentException("operations[" + i + "] is a CompositeOperation");
+ }
+ }
+ this.operations = clonedOps;
+ }
+
+ /**
+ * Returns the component operations in this composite operation. The
+ * returned array is a copy and changes to it don't have effect on this
+ * object.
+ * @return the component operations in this composite operation.
+ */
+ public Operation[] getOperations() {
+ return operations.clone();
+ }
+
+ /**
+ * Returns the number of component operations in this composite operation.
+ * @return the number of component operations in this composite operation.
+ */
+ public int getOperationCount() {
+ return operations.length;
+ }
+
+ /**
+ * Returns the i-th component operation in this composite operation.
+ * @param i the operation index
+ * @return the i-th component operation in this composite operation.
+ * @throws IndexOutOfBoundsException if the index is out of range.
+ */
+ public Operation getOperation(final int i) {
+ try {
+ return operations[i];
+ } catch (final ArrayIndexOutOfBoundsException e) {
+ throw new IndexOutOfBoundsException(Integer.toString(i));
+ }
+ }
+
+ /**
+ * Returns true if this composite operation contains an operation equal to
+ * the specified operation.
+ * @param operation the operation being searched for. Must not be null.
+ * @return true if the if this composite operation contains an operation
+ * equal to the specified operation.
+ */
+ public boolean contains(final Operation operation) {
+ Objects.requireNonNull(operation);
+ for(final Operation component: operations) {
+ if (component.equals(operation)) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ /**
+ * Returns true if the other object is also a composite operation and their
+ * component operations are equal.
+ * @param obj the object to compare to
+ * @return true if this object is equal to the other one, false otherwise.
+ */
+ @Override
+ public boolean equals(final Object obj) {
+ if (obj instanceof CompositeOperation) {
+ return Arrays.equals(operations, ((CompositeOperation)obj).operations);
+ }
+ return false;
+ }
+
+ /**
+ * Returns the hash code of this composite operation. Defined to be equal
+ * to {@code java.util.Arrays.hashCode(operations)}.
+ */
+ @Override
+ public int hashCode() {
+ return Arrays.hashCode(operations);
+ };
+
+ /**
+ * Returns the string representation of this composite operation. Defined to
+ * be the {@code toString} of its component operations, each separated by
+ * the vertical line character (e.g. {@code "GET_PROPERTY|GET_ELEMENT"}).
+ * @return the string representation of this composite operation.
+ */
+ @Override
+ public String toString() {
+ final StringBuilder b = new StringBuilder();
+ b.append(operations[0]);
+ for(int i = 1; i < operations.length; ++i) {
+ b.append('|').append(operations[i]);
+ }
+ return b.toString();
+ }
+
+ /**
+ * Returns the components of the passed operation if it is a composite
+ * operation, otherwise returns an array containing the operation itself.
+ * This allows for returning an array of component even if it is not known
+ * whether the operation is itself a composite (treating a non-composite
+ * operation as if it were a single-element composite of itself).
+ * @param op the operation whose components are retrieved.
+ * @return if the passed operation is a composite operation, returns its
+ * {@link #getOperations()}, otherwise returns the operation itself.
+ */
+ public static Operation[] getOperations(final Operation op) {
+ return op instanceof CompositeOperation
+ ? ((CompositeOperation)op).operations.clone()
+ : new Operation[] { op };
+ }
+
+ /**
+ * Returns true if the specified potentially composite operation is a
+ * {@link CompositeOperation} and contains an operation equal to the
+ * specified operation. If {@code composite} is not a
+ * {@link CompositeOperation}, then the two operations are compared for
+ * equality.
+ * @param composite the potentially composite operation. Must not be null.
+ * @param operation the operation being searched for. Must not be null.
+ * @return true if the if the passed operation is a
+ * {@link CompositeOperation} and contains a component operation equal to
+ * the specified operation, or if it is not a {@link CompositeOperation} and
+ * is equal to {@code operation}.
+ */
+ public static boolean contains(final Operation composite, final Operation operation) {
+ if (composite instanceof CompositeOperation) {
+ return ((CompositeOperation)composite).contains(operation);
+ }
+ return composite.equals(Objects.requireNonNull(operation));
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/DynamicLinker.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/DynamicLinker.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,349 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import java.lang.invoke.MutableCallSite;
+import java.util.Objects;
+import jdk.dynalink.linker.GuardedInvocation;
+import jdk.dynalink.linker.GuardedInvocationTransformer;
+import jdk.dynalink.linker.GuardingDynamicLinker;
+import jdk.dynalink.linker.LinkRequest;
+import jdk.dynalink.linker.LinkerServices;
+import jdk.dynalink.linker.support.Lookup;
+import jdk.dynalink.linker.support.SimpleLinkRequest;
+import jdk.dynalink.support.ChainedCallSite;
+import jdk.dynalink.support.SimpleRelinkableCallSite;
+
+/**
+ * The linker for {@link RelinkableCallSite} objects. A dynamic linker is a main
+ * objects when using Dynalink, it coordinates linking of call sites with
+ * linkers of available language runtimes that are represented by
+ * {@link GuardingDynamicLinker} objects (you only need to deal with these if
+ * you are yourself implementing a language runtime with its own object model
+ * and/or type conversions). To use Dynalink, you have to create one or more
+ * dynamic linkers using a {@link DynamicLinkerFactory}. Subsequently, you need
+ * to invoke its {@link #link(RelinkableCallSite)} method from
+ * {@code invokedynamic} bootstrap methods to let it manage all the call sites
+ * they create. Usual usage would be to create at least one class per language
+ * runtime to contain one linker instance as:
+ *
+ * The above setup of one static linker instance is often too simple. You will
+ * often have your language runtime have a concept of some kind of
+ * "context class loader" and you will want to create one dynamic linker per
+ * such class loader, to ensure it incorporates linkers for all other language
+ * runtimes visible to that class loader (see
+ * {@link DynamicLinkerFactory#setClassLoader(ClassLoader)}).
+ *
+ * There are three components you need to provide in the above example:
+ *
+ *
+ *
You are expected to provide a {@link GuardingDynamicLinker} for your own
+ * language. If your runtime doesn't have its own object model or type
+ * conversions, you don't need to implement a {@code GuardingDynamicLinker}; you
+ * would simply not invoke the {@code setPrioritizedLinker} method on the factory.
+ *
+ *
The performance of the programs can depend on your choice of the class to
+ * represent call sites. The above example used
+ * {@link SimpleRelinkableCallSite}, but you might want to use
+ * {@link ChainedCallSite} instead. You'll need to experiment and decide what
+ * fits your runtime the best. You can further subclass either of these or
+ * implement your own.
+ *
+ *
You also need to provide {@link CallSiteDescriptor}s to your call sites.
+ * They are immutable objects that contain all the information about the call
+ * site: the class performing the lookups, the operation being invoked, and the
+ * method signature. You will have to supply your own scheme to encode and
+ * decode operations in the call site name or static parameters, that is why
+ * in the above example the {@code parseOperation} method is left unimplemented.
+ *
+ *
+ */
+public final class DynamicLinker {
+ private static final String CLASS_NAME = DynamicLinker.class.getName();
+ private static final String RELINK_METHOD_NAME = "relink";
+
+ private static final String INITIAL_LINK_CLASS_NAME = "java.lang.invoke.MethodHandleNatives";
+ private static final String INITIAL_LINK_METHOD_NAME = "linkCallSite";
+ private static final String INVOKE_PACKAGE_PREFIX = "java.lang.invoke.";
+
+ private final LinkerServices linkerServices;
+ private final GuardedInvocationTransformer prelinkTransformer;
+ private final boolean syncOnRelink;
+ private final int unstableRelinkThreshold;
+
+ /**
+ * Creates a new dynamic linker.
+ *
+ * @param linkerServices the linkerServices used by the linker, created by the factory.
+ * @param prelinkTransformer see {@link DynamicLinkerFactory#setPrelinkTransformer(GuardedInvocationTransformer)}
+ * @param syncOnRelink see {@link DynamicLinkerFactory#setSyncOnRelink(boolean)}
+ * @param unstableRelinkThreshold see {@link DynamicLinkerFactory#setUnstableRelinkThreshold(int)}
+ */
+ DynamicLinker(final LinkerServices linkerServices, final GuardedInvocationTransformer prelinkTransformer,
+ final boolean syncOnRelink, final int unstableRelinkThreshold) {
+ if(unstableRelinkThreshold < 0) {
+ throw new IllegalArgumentException("unstableRelinkThreshold < 0");
+ }
+ this.linkerServices = linkerServices;
+ this.prelinkTransformer = prelinkTransformer;
+ this.syncOnRelink = syncOnRelink;
+ this.unstableRelinkThreshold = unstableRelinkThreshold;
+ }
+
+ /**
+ * Links an invokedynamic call site. It will install a method handle into
+ * the call site that invokes the relinking mechanism of this linker. Next
+ * time the call site is invoked, it will be linked for the actual arguments
+ * it was invoked with.
+ *
+ * @param the particular subclass of {@link RelinkableCallSite} for
+ * which to create a link.
+ * @param callSite the call site to link.
+ *
+ * @return the callSite, for easy call chaining.
+ */
+ public T link(final T callSite) {
+ callSite.initialize(createRelinkAndInvokeMethod(callSite, 0));
+ return callSite;
+ }
+
+ /**
+ * Returns the object representing the linker services of this class that
+ * are normally exposed to individual {@link GuardingDynamicLinker
+ * language-specific linkers}. While as a user of this class you normally
+ * only care about the {@link #link(RelinkableCallSite)} method, in certain
+ * circumstances you might want to use the lower level services directly;
+ * either to lookup specific method handles, to access the type converters,
+ * and so on.
+ *
+ * @return the object representing the linker services of this class.
+ */
+ public LinkerServices getLinkerServices() {
+ return linkerServices;
+ }
+
+ private static final MethodHandle RELINK = Lookup.findOwnSpecial(MethodHandles.lookup(), RELINK_METHOD_NAME,
+ MethodHandle.class, RelinkableCallSite.class, int.class, Object[].class);
+
+ private MethodHandle createRelinkAndInvokeMethod(final RelinkableCallSite callSite, final int relinkCount) {
+ // Make a bound MH of invoke() for this linker and call site
+ final MethodHandle boundRelinker = MethodHandles.insertArguments(RELINK, 0, this, callSite, Integer.valueOf(
+ relinkCount));
+ // Make a MH that gathers all arguments to the invocation into an Object[]
+ final MethodType type = callSite.getDescriptor().getMethodType();
+ final MethodHandle collectingRelinker = boundRelinker.asCollector(Object[].class, type.parameterCount());
+ return MethodHandles.foldArguments(MethodHandles.exactInvoker(type), collectingRelinker.asType(
+ type.changeReturnType(MethodHandle.class)));
+ }
+
+ /**
+ * Relinks a call site conforming to the invocation arguments.
+ *
+ * @param callSite the call site itself
+ * @param arguments arguments to the invocation
+ *
+ * @return return the method handle for the invocation
+ *
+ * @throws Exception rethrows any exception thrown by the linkers
+ */
+ @SuppressWarnings("unused")
+ private MethodHandle relink(final RelinkableCallSite callSite, final int relinkCount, final Object... arguments) throws Exception {
+ final CallSiteDescriptor callSiteDescriptor = callSite.getDescriptor();
+ final boolean unstableDetectionEnabled = unstableRelinkThreshold > 0;
+ final boolean callSiteUnstable = unstableDetectionEnabled && relinkCount >= unstableRelinkThreshold;
+ final LinkRequest linkRequest = new SimpleLinkRequest(callSiteDescriptor, callSiteUnstable, arguments);
+
+ GuardedInvocation guardedInvocation = linkerServices.getGuardedInvocation(linkRequest);
+
+ // None found - throw an exception
+ if(guardedInvocation == null) {
+ throw new NoSuchDynamicMethodException(callSiteDescriptor.toString());
+ }
+
+ // Make sure we transform the invocation before linking it into the call site. This is typically used to match the
+ // return type of the invocation to the call site.
+ guardedInvocation = prelinkTransformer.filter(guardedInvocation, linkRequest, linkerServices);
+ Objects.requireNonNull(guardedInvocation);
+
+ int newRelinkCount = relinkCount;
+ // Note that the short-circuited "&&" evaluation below ensures we'll increment the relinkCount until
+ // threshold + 1 but not beyond that. Threshold + 1 is treated as a special value to signal that resetAndRelink
+ // has already executed once for the unstable call site; we only want the call site to throw away its current
+ // linkage once, when it transitions to unstable.
+ if(unstableDetectionEnabled && newRelinkCount <= unstableRelinkThreshold && newRelinkCount++ == unstableRelinkThreshold) {
+ callSite.resetAndRelink(guardedInvocation, createRelinkAndInvokeMethod(callSite, newRelinkCount));
+ } else {
+ callSite.relink(guardedInvocation, createRelinkAndInvokeMethod(callSite, newRelinkCount));
+ }
+ if(syncOnRelink) {
+ MutableCallSite.syncAll(new MutableCallSite[] { (MutableCallSite)callSite });
+ }
+ return guardedInvocation.getInvocation();
+ }
+
+ /**
+ * Returns a stack trace element describing the location of the
+ * {@code invokedynamic} call site currently being linked on the current
+ * thread. The operation is potentially expensive as it needs to generate a
+ * stack trace to inspect it and is intended for use in diagnostics code.
+ * For "free-floating" call sites (not associated with an
+ * {@code invokedynamic} instruction), the result is not well-defined.
+ *
+ * @return a stack trace element describing the location of the call site
+ * currently being linked, or null if it is not invoked while a call
+ * site is being linked.
+ */
+ public static StackTraceElement getLinkedCallSiteLocation() {
+ final StackTraceElement[] trace = new Throwable().getStackTrace();
+ for(int i = 0; i < trace.length - 1; ++i) {
+ final StackTraceElement frame = trace[i];
+ // If we found any of our linking entry points on the stack...
+ if(isRelinkFrame(frame) || isInitialLinkFrame(frame)) {
+ // ... then look for the first thing calling it that isn't j.l.invoke
+ for (int j = i + 1; j < trace.length; ++j) {
+ final StackTraceElement frame2 = trace[j];
+ if (!frame2.getClassName().startsWith(INVOKE_PACKAGE_PREFIX)) {
+ return frame2;
+ }
+ }
+ }
+ }
+ return null;
+ }
+
+ /**
+ * Returns {@code true} if the frame represents {@code MethodHandleNatives.linkCallSite()},
+ * the frame immediately on top of the call site frame when the call site is
+ * being linked for the first time.
+ *
+ * @param frame the frame
+ *
+ * @return {@code true} if this frame represents {@code MethodHandleNatives.linkCallSite()}.
+ */
+ private static boolean isInitialLinkFrame(final StackTraceElement frame) {
+ return testFrame(frame, INITIAL_LINK_METHOD_NAME, INITIAL_LINK_CLASS_NAME);
+ }
+
+ /**
+ * Returns {@code true} if the frame represents {@code DynamicLinker.relink()},
+ * the frame immediately on top of the call site frame when the call site is
+ * being relinked (linked for second and subsequent times).
+ *
+ * @param frame the frame
+ *
+ * @return {@code true} if this frame represents {@code DynamicLinker.relink()}.
+ */
+ private static boolean isRelinkFrame(final StackTraceElement frame) {
+ return testFrame(frame, RELINK_METHOD_NAME, CLASS_NAME);
+ }
+
+ private static boolean testFrame(final StackTraceElement frame, final String methodName, final String className) {
+ return methodName.equals(frame.getMethodName()) && className.equals(frame.getClassName());
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/DynamicLinkerFactory.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/DynamicLinkerFactory.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,527 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodType;
+import java.lang.invoke.MutableCallSite;
+import java.security.AccessControlContext;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Objects;
+import java.util.ServiceConfigurationError;
+import java.util.ServiceLoader;
+import java.util.Set;
+import java.util.function.Supplier;
+import jdk.dynalink.beans.BeansLinker;
+import jdk.dynalink.internal.AccessControlContextFactory;
+import jdk.dynalink.linker.GuardedInvocation;
+import jdk.dynalink.linker.GuardedInvocationTransformer;
+import jdk.dynalink.linker.GuardingDynamicLinker;
+import jdk.dynalink.linker.GuardingDynamicLinkerExporter;
+import jdk.dynalink.linker.GuardingTypeConverterFactory;
+import jdk.dynalink.linker.LinkRequest;
+import jdk.dynalink.linker.LinkerServices;
+import jdk.dynalink.linker.MethodHandleTransformer;
+import jdk.dynalink.linker.MethodTypeConversionStrategy;
+import jdk.dynalink.linker.support.CompositeGuardingDynamicLinker;
+import jdk.dynalink.linker.support.CompositeTypeBasedGuardingDynamicLinker;
+import jdk.dynalink.linker.support.DefaultInternalObjectFilter;
+import jdk.dynalink.linker.support.TypeUtilities;
+
+/**
+ * A factory class for creating {@link DynamicLinker} objects. Dynamic linkers
+ * are the central objects in Dynalink; these are composed of several
+ * {@link GuardingDynamicLinker} objects and coordinate linking of call sites
+ * with them. The usual dynamic linker is a linker
+ * composed of all {@link GuardingDynamicLinker} objects explicitly pre-created
+ * by the user of the factory and configured with
+ * {@link #setPrioritizedLinkers(List)}, as well as any
+ * {@link #setClassLoader(ClassLoader) automatically discovered} ones, and
+ * finally the ones configured with {@link #setFallbackLinkers(List)}; this last
+ * category usually includes {@link BeansLinker}.
+ */
+public final class DynamicLinkerFactory {
+ private static final AccessControlContext GET_CLASS_LOADER_CONTEXT =
+ AccessControlContextFactory.createAccessControlContext("getClassLoader");
+
+ /**
+ * Default value for {@link #setUnstableRelinkThreshold(int) unstable relink
+ * threshold}.
+ */
+ private static final int DEFAULT_UNSTABLE_RELINK_THRESHOLD = 8;
+
+ private boolean classLoaderExplicitlySet = false;
+ private ClassLoader classLoader;
+
+ private List prioritizedLinkers;
+ private List fallbackLinkers;
+ private boolean syncOnRelink = false;
+ private int unstableRelinkThreshold = DEFAULT_UNSTABLE_RELINK_THRESHOLD;
+ private GuardedInvocationTransformer prelinkTransformer;
+ private MethodTypeConversionStrategy autoConversionStrategy;
+ private MethodHandleTransformer internalObjectsFilter;
+
+ private List autoLoadingErrors = Collections.emptyList();
+
+ /**
+ * Creates a new dynamic linker factory with default configuration. Upon
+ * creation, the factory can be configured using various {@code setXxx()}
+ * methods and used to create one or more dynamic linkers according to its
+ * current configuration using {@link #createLinker()}.
+ */
+ public DynamicLinkerFactory() {
+ }
+
+ /**
+ * Sets the class loader for automatic discovery of available guarding
+ * dynamic linkers. {@link GuardingDynamicLinkerExporter} implementations
+ * available through this class loader will be automatically instantiated
+ * using the {@link ServiceLoader} mechanism and the linkers they provide
+ * will be incorporated into {@code DynamicLinker}s that this factory
+ * creates. This allows for cross-language interoperability where call sites
+ * belonging to this language runtime can be linked by linkers from these
+ * automatically discovered runtimes if their native objects are passed to
+ * this runtime. If class loader is not set explicitly by invoking this
+ * method, then the thread context class loader of the thread invoking
+ * {@link #createLinker()} will be used. If this method is invoked
+ * explicitly with null then {@link ServiceLoader#loadInstalled(Class)} will
+ * be used to load the linkers.
+ *
+ * @param classLoader the class loader used for the automatic discovery of
+ * available linkers.
+ */
+ public void setClassLoader(final ClassLoader classLoader) {
+ this.classLoader = classLoader;
+ classLoaderExplicitlySet = true;
+ }
+
+ /**
+ * Sets the prioritized guarding dynamic linkers. Language runtimes using
+ * Dynalink will usually have at least one linker for their own language.
+ * These linkers will be consulted first by the resulting dynamic linker
+ * when it is linking call sites, before any autodiscovered and fallback
+ * linkers. If the factory also autodiscovers a linker class matching one
+ * of the prioritized linkers, the autodiscovered class will be ignored and
+ * the explicit prioritized instance will be used.
+ *
+ * @param prioritizedLinkers the list of prioritized linkers. Can be null.
+ * @throws NullPointerException if any of the list elements are null.
+ */
+ public void setPrioritizedLinkers(final List prioritizedLinkers) {
+ this.prioritizedLinkers = copyListRequireNonNullElements(prioritizedLinkers);
+ }
+
+ /**
+ * Sets the prioritized guarding dynamic linkers. Identical to calling
+ * {@link #setPrioritizedLinkers(List)} with
+ * {@code Arrays.asList(prioritizedLinkers)}.
+ *
+ * @param prioritizedLinkers an array of prioritized linkers. Can be null.
+ * @throws NullPointerException if any of the array elements are null.
+ */
+ public void setPrioritizedLinkers(final GuardingDynamicLinker... prioritizedLinkers) {
+ setPrioritizedLinkers(prioritizedLinkers == null ? null : Arrays.asList(prioritizedLinkers));
+ }
+
+ /**
+ * Sets a single prioritized linker. Identical to calling
+ * {@link #setPrioritizedLinkers(List)} with a single-element list.
+ *
+ * @param prioritizedLinker the single prioritized linker. Must not be null.
+ * @throws NullPointerException if null is passed.
+ */
+ public void setPrioritizedLinker(final GuardingDynamicLinker prioritizedLinker) {
+ this.prioritizedLinkers = Collections.singletonList(Objects.requireNonNull(prioritizedLinker));
+ }
+
+ /**
+ * Sets the fallback guarding dynamic linkers. These linkers will be
+ * consulted last by the resulting dynamic linker when it is linking call
+ * sites, after any autodiscovered and prioritized linkers. If the factory
+ * also autodiscovers a linker class matching one of the fallback linkers,
+ * the autodiscovered class will be ignored and the explicit fallback
+ * instance will be used.
+ *
+ * @param fallbackLinkers the list of fallback linkers. Can be empty to
+ * indicate the caller wishes to set no fallback linkers. Note that if this
+ * method is not invoked explicitly or is passed null, then the factory
+ * will create an instance of {@link BeansLinker} to serve as the default
+ * fallback linker.
+ * @throws NullPointerException if any of the list elements are null.
+ */
+ public void setFallbackLinkers(final List fallbackLinkers) {
+ this.fallbackLinkers = copyListRequireNonNullElements(fallbackLinkers);
+ }
+
+ /**
+ * Sets the fallback guarding dynamic linkers. Identical to calling
+ * {@link #setFallbackLinkers(List)} with
+ * {@code Arrays.asList(fallbackLinkers)}.
+ *
+ * @param fallbackLinkers an array of fallback linkers. Can be empty to
+ * indicate the caller wishes to set no fallback linkers. Note that if this
+ * method is not invoked explicitly or is passed null, then the factory
+ * will create an instance of {@link BeansLinker} to serve as the default
+ * fallback linker.
+ * @throws NullPointerException if any of the array elements are null.
+ */
+ public void setFallbackLinkers(final GuardingDynamicLinker... fallbackLinkers) {
+ setFallbackLinkers(fallbackLinkers == null ? null : Arrays.asList(fallbackLinkers));
+ }
+
+ /**
+ * Sets whether the dynamic linker created by this factory will invoke
+ * {@link MutableCallSite#syncAll(MutableCallSite[])} after a call site is
+ * relinked. Defaults to false. You probably want to set it to true if your
+ * runtime supports multithreaded execution of dynamically linked code.
+ * @param syncOnRelink true for invoking sync on relink, false otherwise.
+ */
+ public void setSyncOnRelink(final boolean syncOnRelink) {
+ this.syncOnRelink = syncOnRelink;
+ }
+
+ /**
+ * Sets the unstable relink threshold; the number of times a call site is
+ * relinked after which it will be considered unstable, and subsequent link
+ * requests for it will indicate this. Defaults to 8 when not set explicitly.
+ * @param unstableRelinkThreshold the new threshold. Must not be less than
+ * zero. The value of zero means that call sites will never be considered
+ * unstable.
+ * @see LinkRequest#isCallSiteUnstable()
+ */
+ public void setUnstableRelinkThreshold(final int unstableRelinkThreshold) {
+ if(unstableRelinkThreshold < 0) {
+ throw new IllegalArgumentException("unstableRelinkThreshold < 0");
+ }
+ this.unstableRelinkThreshold = unstableRelinkThreshold;
+ }
+
+ /**
+ * Set the pre-link transformer. This is a
+ * {@link GuardedInvocationTransformer} that will get the final chance to
+ * modify the guarded invocation after it has been created by a component
+ * linker and before the dynamic linker links it into the call site. It is
+ * normally used to adapt the return value type of the invocation to the
+ * type of the call site. When not set explicitly, a default pre-link
+ * transformer will be used that simply calls
+ * {@link GuardedInvocation#asType(LinkerServices, MethodType)}. Customized
+ * pre-link transformers are rarely needed; they are mostly used as a
+ * building block for implementing advanced techniques such as code
+ * deoptimization strategies.
+ * @param prelinkTransformer the pre-link transformer for the dynamic
+ * linker. Can be null to have the factory use the default transformer.
+ */
+ public void setPrelinkTransformer(final GuardedInvocationTransformer prelinkTransformer) {
+ this.prelinkTransformer = prelinkTransformer;
+ }
+
+ /**
+ * Sets an object representing the conversion strategy for automatic type
+ * conversions. After
+ * {@link LinkerServices#asType(MethodHandle, MethodType)} has applied all
+ * custom conversions to a method handle, it still needs to effect
+ * {@link TypeUtilities#isMethodInvocationConvertible(Class, Class) method
+ * invocation conversions} that can usually be automatically applied as per
+ * {@link MethodHandle#asType(MethodType)}. However, sometimes language
+ * runtimes will want to customize even those conversions for their own call
+ * sites. A typical example is allowing unboxing of null return values,
+ * which is by default prohibited by ordinary
+ * {@code MethodHandles.asType()}. In this case, a language runtime can
+ * install its own custom automatic conversion strategy, that can deal with
+ * null values. Note that when the strategy's
+ * {@link MethodTypeConversionStrategy#asType(MethodHandle, MethodType)}
+ * is invoked, the custom language conversions will already have been
+ * applied to the method handle, so by design the difference between the
+ * handle's current method type and the desired final type will always only
+ * be ones that can be subjected to method invocation conversions. The
+ * strategy also doesn't need to invoke a final
+ * {@code MethodHandle.asType()} as that will be done internally as the
+ * final step.
+ * @param autoConversionStrategy the strategy for applying method invocation
+ * conversions for the linker created by this factory. Can be null for no
+ * custom strategy.
+ */
+ public void setAutoConversionStrategy(final MethodTypeConversionStrategy autoConversionStrategy) {
+ this.autoConversionStrategy = autoConversionStrategy;
+ }
+
+ /**
+ * Sets a method handle transformer that is supposed to act as the
+ * implementation of
+ * {@link LinkerServices#filterInternalObjects(MethodHandle)} for linker
+ * services of dynamic linkers created by this factory. Some language
+ * runtimes can have internal objects that should not escape their scope.
+ * They can add a transformer here that will modify the method handle so
+ * that any parameters that can receive potentially internal language
+ * runtime objects will have a filter added on them to prevent them from
+ * escaping, potentially by wrapping them. The transformer can also
+ * potentially add an unwrapping filter to the return value.
+ * {@link DefaultInternalObjectFilter} is provided as a convenience class
+ * for easily creating such filtering transformers.
+ * @param internalObjectsFilter a method handle transformer filtering out
+ * internal objects, or null.
+ */
+ public void setInternalObjectsFilter(final MethodHandleTransformer internalObjectsFilter) {
+ this.internalObjectsFilter = internalObjectsFilter;
+ }
+
+ /**
+ * Creates a new dynamic linker based on the current configuration. This
+ * method can be invoked more than once to create multiple dynamic linkers.
+ * Automatically discovered linkers are newly instantiated on every
+ * invocation of this method. It is allowed to change the factory's
+ * configuration between invocations. The method is not thread safe. After
+ * invocation, callers can invoke {@link #getAutoLoadingErrors()} to
+ * retrieve a list of {@link ServiceConfigurationError}s that occurred while
+ * trying to load automatically discovered linkers. These are never thrown
+ * from the call to this method as it makes every effort to recover from
+ * them and ignore the failing linkers.
+ * @return the new dynamic Linker
+ */
+ public DynamicLinker createLinker() {
+ // Treat nulls appropriately
+ if(prioritizedLinkers == null) {
+ prioritizedLinkers = Collections.emptyList();
+ }
+ if(fallbackLinkers == null) {
+ fallbackLinkers = Collections.singletonList(new BeansLinker());
+ }
+
+ // Gather classes of all precreated (prioritized and fallback) linkers.
+ // We'll filter out any discovered linkers of the same class.
+ final Set> knownLinkerClasses =
+ new HashSet<>();
+ addClasses(knownLinkerClasses, prioritizedLinkers);
+ addClasses(knownLinkerClasses, fallbackLinkers);
+
+ final List discovered = discoverAutoLoadLinkers();
+
+ // Now, concatenate ...
+ final List linkers =
+ new ArrayList<>(prioritizedLinkers.size() + discovered.size()
+ + fallbackLinkers.size());
+ // ... prioritized linkers, ...
+ linkers.addAll(prioritizedLinkers);
+ // ... filtered discovered linkers, ...
+ for(final GuardingDynamicLinker linker: discovered) {
+ if(!knownLinkerClasses.contains(linker.getClass())) {
+ linkers.add(linker);
+ }
+ }
+ // ... and finally fallback linkers.
+ linkers.addAll(fallbackLinkers);
+ final List optimized = CompositeTypeBasedGuardingDynamicLinker.optimize(linkers);
+ final GuardingDynamicLinker composite;
+ switch(linkers.size()) {
+ case 0: {
+ composite = (r, s) -> null; // linker that can't link anything
+ break;
+ }
+ case 1: {
+ composite = optimized.get(0);
+ break;
+ }
+ default: {
+ composite = new CompositeGuardingDynamicLinker(optimized);
+ break;
+ }
+ }
+
+ final List typeConverters = new LinkedList<>();
+ for(final GuardingDynamicLinker linker: linkers) {
+ if(linker instanceof GuardingTypeConverterFactory) {
+ typeConverters.add((GuardingTypeConverterFactory)linker);
+ }
+ }
+
+ if(prelinkTransformer == null) {
+ prelinkTransformer = (inv, request, linkerServices) -> inv.asType(linkerServices, request.getCallSiteDescriptor().getMethodType());
+ }
+
+ return new DynamicLinker(new LinkerServicesImpl(new TypeConverterFactory(typeConverters,
+ autoConversionStrategy), composite, internalObjectsFilter), prelinkTransformer,
+ syncOnRelink, unstableRelinkThreshold);
+ }
+
+ /**
+ * Returns a list of {@link ServiceConfigurationError}s that were
+ * encountered while loading automatically discovered linkers during the
+ * last invocation of {@link #createLinker()}. They can be any non-Dynalink
+ * specific service configuration issues, as well as some Dynalink-specific
+ * errors when an exporter that the factory tried to automatically load:
+ *
+ *
did not have the runtime permission named
+ * {@link GuardingDynamicLinkerExporter#AUTOLOAD_PERMISSION_NAME} in a
+ * system with a security manager, or
+ *
returned null from {@link GuardingDynamicLinkerExporter#get()}, or
+ *
the list returned from {@link GuardingDynamicLinkerExporter#get()}
+ * had a null element.
+ *
+ * @return an immutable list of encountered
+ * {@link ServiceConfigurationError}s. Can be empty.
+ */
+ public List getAutoLoadingErrors() {
+ return Collections.unmodifiableList(autoLoadingErrors);
+ }
+
+ private List discoverAutoLoadLinkers() {
+ autoLoadingErrors = new LinkedList<>();
+ final ClassLoader effectiveClassLoader = classLoaderExplicitlySet ? classLoader : getThreadContextClassLoader();
+ final List discovered = new LinkedList<>();
+ try {
+ final ServiceLoader linkerLoader =
+ AccessController.doPrivileged((PrivilegedAction>)()-> {
+ if (effectiveClassLoader == null) {
+ return ServiceLoader.loadInstalled(GuardingDynamicLinkerExporter.class);
+ }
+ return ServiceLoader.load(GuardingDynamicLinkerExporter.class, effectiveClassLoader);
+ });
+
+ for(final Iterator it = linkerLoader.iterator(); it.hasNext();) {
+ try {
+ final GuardingDynamicLinkerExporter autoLoader = it.next();
+ try {
+ discovered.addAll(requireNonNullElements(
+ Objects.requireNonNull(autoLoader.get(),
+ ()->(autoLoader.getClass().getName() + " returned null from get()")),
+ ()->(autoLoader.getClass().getName() + " returned a list with at least one null element")));
+ } catch (final ServiceConfigurationError|VirtualMachineError e) {
+ // Don't wrap a SCE in another SCE. Also, don't ignore
+ // any VME (e.g. StackOverflowError or OutOfMemoryError).
+ throw e;
+ } catch (final Throwable t) {
+ throw new ServiceConfigurationError(t.getMessage(), t);
+ }
+ } catch (final ServiceConfigurationError e) {
+ // Catch SCE with an individual exporter, carry on with it.hasNext().
+ autoLoadingErrors.add(e);
+ }
+ }
+ } catch (final ServiceConfigurationError e) {
+ // Catch a top-level SCE; one either in ServiceLoader.load(),
+ // ServiceLoader.iterator(), or Iterator.hasNext().
+ autoLoadingErrors.add(e);
+ }
+ return discovered;
+ }
+
+ private static ClassLoader getThreadContextClassLoader() {
+ return AccessController.doPrivileged(new PrivilegedAction() {
+ @Override
+ public ClassLoader run() {
+ return Thread.currentThread().getContextClassLoader();
+ }
+ }, GET_CLASS_LOADER_CONTEXT);
+ }
+
+ private static void addClasses(final Set> knownLinkerClasses,
+ final List linkers) {
+ for(final GuardingDynamicLinker linker: linkers) {
+ knownLinkerClasses.add(linker.getClass());
+ }
+ }
+
+ private static List copyListRequireNonNullElements(final List list) {
+ if (list == null) {
+ return null;
+ }
+ return new ArrayList<>(requireNonNullElements(list, ()->"List has at least one null element"));
+ }
+
+ private static List requireNonNullElements(final List list, final Supplier msgSupplier) {
+ for(final T t: list) {
+ Objects.requireNonNull(t, msgSupplier);
+ }
+ return list;
+ }
+
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/LinkerServicesImpl.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/LinkerServicesImpl.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,164 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import jdk.dynalink.linker.ConversionComparator.Comparison;
+import jdk.dynalink.linker.GuardedInvocation;
+import jdk.dynalink.linker.GuardingDynamicLinker;
+import jdk.dynalink.linker.LinkRequest;
+import jdk.dynalink.linker.LinkerServices;
+import jdk.dynalink.linker.MethodHandleTransformer;
+
+/**
+ * Default implementation of the {@link LinkerServices} interface.
+ */
+final class LinkerServicesImpl implements LinkerServices {
+ private static final ThreadLocal threadLinkRequest = new ThreadLocal<>();
+
+ private final TypeConverterFactory typeConverterFactory;
+ private final GuardingDynamicLinker topLevelLinker;
+ private final MethodHandleTransformer internalObjectsFilter;
+
+ /**
+ * Creates a new linker services object.
+ *
+ * @param typeConverterFactory the type converter factory exposed by the services.
+ * @param topLevelLinker the top level linker used by the services.
+ * @param internalObjectsFilter a method handle transformer that is supposed to act as the implementation of this
+ * services' {@link #filterInternalObjects(java.lang.invoke.MethodHandle)} method.
+ */
+ LinkerServicesImpl(final TypeConverterFactory typeConverterFactory,
+ final GuardingDynamicLinker topLevelLinker, final MethodHandleTransformer internalObjectsFilter) {
+ this.typeConverterFactory = typeConverterFactory;
+ this.topLevelLinker = topLevelLinker;
+ this.internalObjectsFilter = internalObjectsFilter;
+ }
+
+ @Override
+ public boolean canConvert(final Class from, final Class to) {
+ return typeConverterFactory.canConvert(from, to);
+ }
+
+ @Override
+ public MethodHandle asType(final MethodHandle handle, final MethodType fromType) {
+ return typeConverterFactory.asType(handle, fromType);
+ }
+
+ @Override
+ public MethodHandle getTypeConverter(final Class sourceType, final Class targetType) {
+ return typeConverterFactory.getTypeConverter(sourceType, targetType);
+ }
+
+ @Override
+ public Comparison compareConversion(final Class sourceType, final Class targetType1, final Class targetType2) {
+ return typeConverterFactory.compareConversion(sourceType, targetType1, targetType2);
+ }
+
+ @Override
+ public GuardedInvocation getGuardedInvocation(final LinkRequest linkRequest) throws Exception {
+ final LinkRequest prevLinkRequest = threadLinkRequest.get();
+ threadLinkRequest.set(linkRequest);
+ try {
+ return topLevelLinker.getGuardedInvocation(linkRequest, this);
+ } finally {
+ threadLinkRequest.set(prevLinkRequest);
+ }
+ }
+
+ @Override
+ public MethodHandle filterInternalObjects(final MethodHandle target) {
+ return internalObjectsFilter != null ? internalObjectsFilter.transform(target) : target;
+ }
+
+ static MethodHandles.Lookup getCurrentLookup() {
+ final LinkRequest currentRequest = threadLinkRequest.get();
+ if (currentRequest != null) {
+ return currentRequest.getCallSiteDescriptor().getLookup();
+ }
+ return MethodHandles.publicLookup();
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/NamedOperation.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/NamedOperation.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,195 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2015 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink;
+
+import java.util.Objects;
+
+/**
+ * Operation that associates a name with another operation. Typically used with
+ * operations that normally take a name or an index to bind them to a fixed
+ * name. E.g. {@code new NamedOperation(StandardOperation.GET_PROPERTY, "color")}
+ * will be a named operation for getting the property named "color" on the
+ * object it is applied to, and
+ * {@code new NamedOperation(StandardOperation.GET_ELEMENT, 3)} will be a named
+ * operation for getting the element at index 3 from the collection it is
+ * applied to. In these cases, the expected signature of the call site for the
+ * operation will change to no longer include the name parameter. Specifically,
+ * the documentation for all {@link StandardOperation} members describes how
+ * they are affected by being incorporated into a named operation.
+ */
+public final class NamedOperation implements Operation {
+ private final Operation baseOperation;
+ private final Object name;
+
+ /**
+ * Creates a new named operation.
+ * @param baseOperation the base operation that is associated with a name.
+ * @param name the name associated with the base operation. Note that the
+ * name is not necessarily a string, but can be an arbitrary object. As the
+ * name is used for addressing, it can be an {@link Integer} when meant
+ * to be used as an index into an array or list etc.
+ * @throws NullPointerException if either {@code baseOperation} or
+ * {@code name} is null.
+ * @throws IllegalArgumentException if {@code baseOperation} is itself a
+ * {@code NamedOperation}.
+ */
+ public NamedOperation(final Operation baseOperation, final Object name) {
+ if (baseOperation instanceof NamedOperation) {
+ throw new IllegalArgumentException("baseOperation is a named operation");
+ }
+ this.baseOperation = Objects.requireNonNull(baseOperation, "baseOperation is null");
+ this.name = Objects.requireNonNull(name, "name is null");
+ }
+
+ /**
+ * Returns the base operation of this named operation.
+ * @return the base operation of this named operation.
+ */
+ public Operation getBaseOperation() {
+ return baseOperation;
+ }
+
+ /**
+ * Returns the name of this named operation.
+ * @return the name of this named operation.
+ */
+ public Object getName() {
+ return name;
+ }
+
+ /**
+ * Compares this named operation to another object. Returns true if the
+ * other object is also a named operation, and both their base operations
+ * and name are equal.
+ */
+ @Override
+ public boolean equals(final Object obj) {
+ if (obj instanceof NamedOperation) {
+ final NamedOperation other = (NamedOperation)obj;
+ return baseOperation.equals(other.baseOperation) && name.equals(other.name);
+ }
+ return false;
+ }
+
+ /**
+ * Returns the hash code of this named operation. It is defined to be equal
+ * to {@code baseOperation.hashCode() + 31 * name.hashCode()}.
+ */
+ @Override
+ public int hashCode() {
+ return baseOperation.hashCode() + 31 * name.hashCode();
+ }
+
+ /**
+ * Returns the string representation of this named operation. It is defined
+ * to be equal to {@code baseOperation.toString() + ":" + name.toString()}.
+ */
+ @Override
+ public String toString() {
+ return baseOperation.toString() + ":" + name.toString();
+ }
+
+ /**
+ * If the passed operation is a named operation, returns its
+ * {@link #getBaseOperation()}, otherwise returns the operation as is.
+ * @param op the operation
+ * @return the base operation of the passed operation.
+ */
+ public static Operation getBaseOperation(final Operation op) {
+ return op instanceof NamedOperation ? ((NamedOperation)op).baseOperation : op;
+ }
+
+ /**
+ * If the passed operation is a named operation, returns its
+ * {@link #getName()}, otherwise returns null. Note that a named operation
+ * object can never have a null name, therefore returning null is indicative
+ * that the passed operation is not, in fact, a named operation.
+ * @param op the operation
+ * @return the name in the passed operation, or null if it is not a named
+ * operation.
+ */
+ public static Object getName(final Operation op) {
+ return op instanceof NamedOperation ? ((NamedOperation)op).name : null;
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/NoSuchDynamicMethodException.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/NoSuchDynamicMethodException.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink;
+
+import jdk.dynalink.linker.GuardingDynamicLinker;
+
+/**
+ * Thrown at the invocation if the call site can not be linked by any available {@link GuardingDynamicLinker}.
+ */
+public class NoSuchDynamicMethodException extends RuntimeException {
+ private static final long serialVersionUID = 1L;
+
+ /**
+ * Creates a new NoSuchDynamicMethodException
+ * @param message the message of the exception.
+ */
+ public NoSuchDynamicMethodException(final String message) {
+ super(message);
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/Operation.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/Operation.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2015 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink;
+
+/**
+ * An object that describes a dynamic operation. Dynalink defines a set of
+ * standard operations with the {@link StandardOperation} class, as well as a
+ * way to attach a fixed name to an operation using {@link NamedOperation} and
+ * to express a set of alternative operations using {@link CompositeOperation}.
+ * When presenting examples in this documentation, we will refer to standard
+ * operations using their name (e.g. {@code GET_PROPERTY}), to composite
+ * operations by separating their components with the vertical line character
+ * (e.g. {@code GET_PROPERTY|GET_ELEMENT}), and finally to named operations by
+ * separating the base operation and the name with the colon character (e.g.
+ * {@code GET_PROPERTY|GET_ELEMENT:color}).
+ */
+public interface Operation {
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/RelinkableCallSite.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/RelinkableCallSite.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,178 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink;
+
+import java.lang.invoke.CallSite;
+import java.lang.invoke.MethodHandle;
+import jdk.dynalink.linker.GuardedInvocation;
+import jdk.dynalink.support.ChainedCallSite;
+import jdk.dynalink.support.SimpleRelinkableCallSite;
+
+/**
+ * Interface for call sites managed by a {@link DynamicLinker}. Users of
+ * Dynalink must use subclasses of {@link CallSite} that also implement this
+ * interface as their call site implementations. There is a readily usable
+ * {@link SimpleRelinkableCallSite} subclass that implements monomorphic inline
+ * caching strategy as well as {@link ChainedCallSite} that implements a
+ * polymorphic inline caching strategy and retains a chain of previously linked
+ * method handles. A relinkable call site will be managed by a
+ * {@link DynamicLinker} object after being associated with it using its
+ * {@link DynamicLinker#link(RelinkableCallSite)} method.
+ */
+public interface RelinkableCallSite {
+ /**
+ * Invoked by dynamic linker to initialize the relinkable call site by
+ * setting a relink-and-invoke method handle. The call site implementation
+ * is supposed to set this method handle as its target using
+ * {@link CallSite#setTarget(MethodHandle)}. Relink-and-invoke is the
+ * initial method handle set by
+ * {@link DynamicLinker#link(RelinkableCallSite)} that will cause the call
+ * site to be relinked to an appropriate target on its first invocation
+ * based on its arguments, and that linked target will then be invoked
+ * (hence the name). This linking protocol effectively delays linking until
+ * the call site is invoked with actual arguments and thus ensures that
+ * linkers can make nuanced linking decisions based on those arguments and
+ * not just on the static method type of the call site.
+ * @param relinkAndInvoke a relink-and-invoke method handle supplied by
+ * Dynalink.
+ */
+ public void initialize(MethodHandle relinkAndInvoke);
+
+ /**
+ * Returns the descriptor for this call site.
+ *
+ * @return the descriptor for this call site.
+ */
+ public CallSiteDescriptor getDescriptor();
+
+ /**
+ * This method will be called by the dynamic linker every time the call site
+ * is relinked (but see
+ * {@link #resetAndRelink(GuardedInvocation, MethodHandle)} for an
+ * exception). It will be passed a {@code GuardedInvocation} that the call
+ * site should incorporate into its target method handle. When this method
+ * is called, the call site is allowed to keep other non-invalidated
+ * invocations around for implementation of polymorphic inline caches and
+ * compose them with this invocation to form its final target.
+ *
+ * @param guardedInvocation the guarded invocation that the call site should
+ * incorporate into its target method handle.
+ * @param relinkAndInvoke a relink-and-invoke method handle. This is a
+ * method handle matching the method type of the call site that is supplied
+ * by the {@link DynamicLinker} as a callback. It should be used by this
+ * call site as the ultimate fallback when it can't invoke its target with
+ * the passed arguments. The fallback method is such that when it's invoked,
+ * it'll try to obtain an adequate target {@link GuardedInvocation} for the
+ * invocation, and subsequently invoke
+ * {@link #relink(GuardedInvocation, MethodHandle)} or
+ * {@link #resetAndRelink(GuardedInvocation, MethodHandle)}, and finally
+ * invoke the target.
+ */
+ public void relink(GuardedInvocation guardedInvocation, MethodHandle relinkAndInvoke);
+
+ /**
+ * This method will be called by the dynamic linker every time the call site
+ * is relinked and the linker wishes the call site to throw away any
+ * prior linkage state (that is how it differs from
+ * {@link #relink(GuardedInvocation, MethodHandle)}). It will be passed a
+ * {@code GuardedInvocation} that the call site should use to build its new
+ * target method handle. When this method is called, the call site is
+ * discouraged from keeping any previous state, and is supposed to only
+ * link the current invocation.
+ *
+ * @param guardedInvocation the guarded invocation that the call site should
+ * use to build its target method handle.
+ * @param relinkAndInvoke a relink-and-invoke method handle. This is a
+ * method handle matching the method type of the call site that is supplied
+ * by the {@link DynamicLinker} as a callback. It should be used by this
+ * call site as the ultimate fallback when it can't invoke its target with
+ * the passed arguments. The fallback method is such that when it's invoked,
+ * it'll try to obtain an adequate target {@link GuardedInvocation} for the
+ * invocation, and subsequently invoke
+ * {@link #relink(GuardedInvocation, MethodHandle)} or
+ * {@link #resetAndRelink(GuardedInvocation, MethodHandle)}, and finally
+ * invoke the target.
+ */
+ public void resetAndRelink(GuardedInvocation guardedInvocation, MethodHandle relinkAndInvoke);
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/StandardOperation.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/StandardOperation.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,176 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2015 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink;
+
+/**
+ * Defines the standard dynamic operations. Getter and setter operations defined
+ * in this enumeration can be composed into a {@link CompositeOperation}, and
+ * {@link NamedOperation} can be used to bind the name parameter of operations
+ * that take one, in which case it disappears from the type signature.
+ */
+public enum StandardOperation implements Operation {
+ /**
+ * Get the value of a property defined on an object. Call sites with this
+ * operation should have a signature of
+ * (receiver, propertyName)→value or
+ * (receiver)→value when used with {@link NamedOperation}, with
+ * all parameters and return type being of any type (either primitive or
+ * reference).
+ */
+ GET_PROPERTY,
+ /**
+ * Set the value of a property defined on an object. Call sites with this
+ * operation should have a signature of
+ * (receiver, propertyName, value)→void or
+ * (receiver, value)→void when used with {@link NamedOperation},
+ * with all parameters and return type being of any type (either primitive
+ * or reference).
+ */
+ SET_PROPERTY,
+ /**
+ * Get the value of an element of a collection. Call sites with this
+ * operation should have a signature of
+ * (receiver, index)→value or
+ * (receiver)→value when used with {@link NamedOperation}, with
+ * all parameters and return type being of any type (either primitive or
+ * reference).
+ */
+ GET_ELEMENT,
+ /**
+ * Set the value of an element of a collection. Call sites with this
+ * operation should have a signature of
+ * (receiver, index, value)→void or
+ * (receiver, value)→void when used with {@link NamedOperation},
+ * with all parameters and return type being of any type (either primitive
+ * or reference).
+ */
+ SET_ELEMENT,
+ /**
+ * Get the length of an array or size of a collection. Call sites with
+ * this operation should have a signature of (receiver)→value,
+ * with all parameters and return type being of any type (either primitive
+ * or reference).
+ */
+ GET_LENGTH,
+ /**
+ * Gets an object representing a method defined on an object. Call sites
+ * with this operation should have a signature of
+ * (receiver, methodName)→value, or
+ * (receiver)→value when used with {@link NamedOperation}
+ * with all parameters and return type being of any type (either primitive
+ * or reference).
+ */
+ GET_METHOD,
+ /**
+ * Calls a method defined on an object. Call sites with this
+ * operation should have a signature of
+ * (receiver, methodName, arguments...)→value or
+ * (receiver, arguments...)→value when used with {@link NamedOperation},
+ * with all parameters and return type being of any type (either primitive
+ * or reference).
+ */
+ CALL_METHOD,
+ /**
+ * Calls a callable object. Call sites with this operation should have a
+ * signature of (receiver, arguments...)→value, with all
+ * parameters and return type being of any type (either primitive or
+ * reference). Typically, if the callable is a method of an object, the
+ * first argument will act as the "this" value passed to the called method.
+ * The CALL operation is allowed to be used with a
+ * {@link NamedOperation} even though it does not take a name. Using it with
+ * a named operation won't affect its signature; the name is solely meant to
+ * be used as a diagnostic description for error messages.
+ */
+ CALL,
+ /**
+ * Calls a constructor object. Call sites with this operation should have a
+ * signature of (receiver, arguments...)→value, with all
+ * parameters and return type being of any type (either primitive or
+ * reference). The NEW operation is allowed to be used with a
+ * {@link NamedOperation} even though it does not take a name. Using it with
+ * a named operation won't affect its signature; the name is solely meant to
+ * be used as a diagnostic description for error messages.
+ */
+ NEW
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/TypeConverterFactory.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/TypeConverterFactory.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,437 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodHandles.Lookup;
+import java.lang.invoke.MethodType;
+import java.lang.invoke.WrongMethodTypeException;
+import java.security.AccessControlContext;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.function.Supplier;
+import jdk.dynalink.internal.AccessControlContextFactory;
+import jdk.dynalink.linker.ConversionComparator;
+import jdk.dynalink.linker.ConversionComparator.Comparison;
+import jdk.dynalink.linker.GuardedInvocation;
+import jdk.dynalink.linker.GuardingTypeConverterFactory;
+import jdk.dynalink.linker.LinkerServices;
+import jdk.dynalink.linker.MethodTypeConversionStrategy;
+import jdk.dynalink.linker.support.TypeUtilities;
+
+/**
+ * A factory for type converters. This class is the main implementation behind the
+ * {@link LinkerServices#asType(MethodHandle, MethodType)}. It manages the known {@link GuardingTypeConverterFactory}
+ * instances and creates appropriate converters for method handles.
+ */
+final class TypeConverterFactory {
+ private static final AccessControlContext GET_CLASS_LOADER_CONTEXT =
+ AccessControlContextFactory.createAccessControlContext("getClassLoader");
+
+ private final GuardingTypeConverterFactory[] factories;
+ private final ConversionComparator[] comparators;
+ private final MethodTypeConversionStrategy autoConversionStrategy;
+
+ private final ClassValue> converterMap = new ClassValue>() {
+ @Override
+ protected ClassMap computeValue(final Class sourceType) {
+ return new ClassMap(getClassLoader(sourceType)) {
+ @Override
+ protected MethodHandle computeValue(final Class targetType) {
+ try {
+ return createConverter(sourceType, targetType);
+ } catch (final RuntimeException e) {
+ throw e;
+ } catch (final Exception e) {
+ throw new RuntimeException(e);
+ }
+ }
+ };
+ }
+ };
+
+ private final ClassValue> converterIdentityMap = new ClassValue>() {
+ @Override
+ protected ClassMap computeValue(final Class sourceType) {
+ return new ClassMap(getClassLoader(sourceType)) {
+ @Override
+ protected MethodHandle computeValue(final Class targetType) {
+ if(!canAutoConvert(sourceType, targetType)) {
+ final MethodHandle converter = getCacheableTypeConverter(sourceType, targetType);
+ if(converter != IDENTITY_CONVERSION) {
+ return converter;
+ }
+ }
+ return IDENTITY_CONVERSION.asType(MethodType.methodType(targetType, sourceType));
+ }
+ };
+ }
+ };
+
+ private final ClassValue> canConvert = new ClassValue>() {
+ @Override
+ protected ClassMap computeValue(final Class sourceType) {
+ return new ClassMap(getClassLoader(sourceType)) {
+ @Override
+ protected Boolean computeValue(final Class targetType) {
+ try {
+ return getTypeConverterNull(sourceType, targetType) != null;
+ } catch (final RuntimeException e) {
+ throw e;
+ } catch (final Exception e) {
+ throw new RuntimeException(e);
+ }
+ }
+ };
+ }
+ };
+
+ private static ClassLoader getClassLoader(final Class clazz) {
+ return AccessController.doPrivileged(new PrivilegedAction() {
+ @Override
+ public ClassLoader run() {
+ return clazz.getClassLoader();
+ }
+ }, GET_CLASS_LOADER_CONTEXT);
+ }
+
+ /**
+ * Creates a new type converter factory from the available {@link GuardingTypeConverterFactory} instances.
+ *
+ * @param factories the {@link GuardingTypeConverterFactory} instances to compose.
+ * @param autoConversionStrategy conversion strategy for automatic type conversions. After
+ * {@link #asType(java.lang.invoke.MethodHandle, java.lang.invoke.MethodType)} has applied all custom
+ * conversions to a method handle, it still needs to effect
+ * {@link TypeUtilities#isMethodInvocationConvertible(Class, Class) method invocation conversions} that
+ * can usually be automatically applied as per
+ * {@link java.lang.invoke.MethodHandle#asType(java.lang.invoke.MethodType)}.
+ * However, sometimes language runtimes will want to customize even those conversions for their own call
+ * sites. A typical example is allowing unboxing of null return values, which is by default prohibited by
+ * ordinary {@code MethodHandles.asType}. In this case, a language runtime can install its own custom
+ * automatic conversion strategy, that can deal with null values. Note that when the strategy's
+ * {@link MethodTypeConversionStrategy#asType(java.lang.invoke.MethodHandle, java.lang.invoke.MethodType)}
+ * is invoked, the custom language conversions will already have been applied to the method handle, so by
+ * design the difference between the handle's current method type and the desired final type will always
+ * only be ones that can be subjected to method invocation conversions. Can be null, in which case no
+ * custom strategy is employed.
+ */
+ TypeConverterFactory(final Iterable factories,
+ final MethodTypeConversionStrategy autoConversionStrategy) {
+ final List l = new LinkedList<>();
+ final List c = new LinkedList<>();
+ for(final GuardingTypeConverterFactory factory: factories) {
+ l.add(factory);
+ if(factory instanceof ConversionComparator) {
+ c.add((ConversionComparator)factory);
+ }
+ }
+ this.factories = l.toArray(new GuardingTypeConverterFactory[l.size()]);
+ this.comparators = c.toArray(new ConversionComparator[c.size()]);
+ this.autoConversionStrategy = autoConversionStrategy;
+ }
+
+ /**
+ * Similar to {@link MethodHandle#asType(MethodType)} except it also hooks in method handles produced by
+ * {@link GuardingTypeConverterFactory} implementations, providing for language-specific type coercing of
+ * parameters. For all conversions that are not a JLS method invocation conversion it'll insert
+ * {@link MethodHandles#filterArguments(MethodHandle, int, MethodHandle...)} with composite filters
+ * provided by {@link GuardingTypeConverterFactory} implementations. For the remaining JLS method invocation
+ * conversions, it will invoke {@link MethodTypeConversionStrategy#asType(MethodHandle, MethodType)} first
+ * if an automatic conversion strategy was specified in the
+ * {@link #TypeConverterFactory(Iterable, MethodTypeConversionStrategy) constructor}, and finally apply
+ * {@link MethodHandle#asType(MethodType)} for any remaining conversions.
+ *
+ * @param handle target method handle
+ * @param fromType the types of source arguments
+ * @return a method handle that is a suitable combination of {@link MethodHandle#asType(MethodType)},
+ * {@link MethodTypeConversionStrategy#asType(MethodHandle, MethodType)}, and
+ * {@link MethodHandles#filterArguments(MethodHandle, int, MethodHandle...)} with
+ * {@link GuardingTypeConverterFactory} produced type converters as filters.
+ */
+ MethodHandle asType(final MethodHandle handle, final MethodType fromType) {
+ MethodHandle newHandle = handle;
+ final MethodType toType = newHandle.type();
+ final int l = toType.parameterCount();
+ if(l != fromType.parameterCount()) {
+ throw new WrongMethodTypeException("Parameter counts differ: " + handle.type() + " vs. " + fromType);
+ }
+ int pos = 0;
+ final List converters = new LinkedList<>();
+ for(int i = 0; i < l; ++i) {
+ final Class fromParamType = fromType.parameterType(i);
+ final Class toParamType = toType.parameterType(i);
+ if(canAutoConvert(fromParamType, toParamType)) {
+ newHandle = applyConverters(newHandle, pos, converters);
+ } else {
+ final MethodHandle converter = getTypeConverterNull(fromParamType, toParamType);
+ if(converter != null) {
+ if(converters.isEmpty()) {
+ pos = i;
+ }
+ converters.add(converter);
+ } else {
+ newHandle = applyConverters(newHandle, pos, converters);
+ }
+ }
+ }
+ newHandle = applyConverters(newHandle, pos, converters);
+
+ // Convert return type
+ final Class fromRetType = fromType.returnType();
+ final Class toRetType = toType.returnType();
+ if(fromRetType != Void.TYPE && toRetType != Void.TYPE) {
+ if(!canAutoConvert(toRetType, fromRetType)) {
+ final MethodHandle converter = getTypeConverterNull(toRetType, fromRetType);
+ if(converter != null) {
+ newHandle = MethodHandles.filterReturnValue(newHandle, converter);
+ }
+ }
+ }
+
+ // Give change to automatic conversion strategy, if one is present.
+ final MethodHandle autoConvertedHandle =
+ autoConversionStrategy != null ? autoConversionStrategy.asType(newHandle, fromType) : newHandle;
+
+ // Do a final asType for any conversions that remain.
+ return autoConvertedHandle.asType(fromType);
+ }
+
+ private static MethodHandle applyConverters(final MethodHandle handle, final int pos, final List converters) {
+ if(converters.isEmpty()) {
+ return handle;
+ }
+ final MethodHandle newHandle =
+ MethodHandles.filterArguments(handle, pos, converters.toArray(new MethodHandle[converters.size()]));
+ converters.clear();
+ return newHandle;
+ }
+
+ /**
+ * Returns true if there might exist a conversion between the requested types (either an automatic JVM conversion,
+ * or one provided by any available {@link GuardingTypeConverterFactory}), or false if there definitely does not
+ * exist a conversion between the requested types. Note that returning true does not guarantee that the conversion
+ * will succeed at runtime (notably, if the "from" or "to" types are sufficiently generic), but returning false
+ * guarantees that it would fail.
+ *
+ * @param from the source type for the conversion
+ * @param to the target type for the conversion
+ * @return true if there can be a conversion, false if there can not.
+ */
+ boolean canConvert(final Class from, final Class to) {
+ return canAutoConvert(from, to) || canConvert.get(from).get(to);
+ }
+
+ /**
+ * Determines which of the two type conversions from a source type to the two target types is preferred. This is
+ * used for dynamic overloaded method resolution. If the source type is convertible to exactly one target type with
+ * a method invocation conversion, it is chosen, otherwise available {@link ConversionComparator}s are consulted.
+ * @param sourceType the source type.
+ * @param targetType1 one potential target type
+ * @param targetType2 another potential target type.
+ * @return one of Comparison constants that establish which - if any - of the target types is preferable for the
+ * conversion.
+ */
+ Comparison compareConversion(final Class sourceType, final Class targetType1, final Class targetType2) {
+ for(final ConversionComparator comparator: comparators) {
+ final Comparison result = comparator.compareConversion(sourceType, targetType1, targetType2);
+ if(result != Comparison.INDETERMINATE) {
+ return result;
+ }
+ }
+ if(TypeUtilities.isMethodInvocationConvertible(sourceType, targetType1)) {
+ if(!TypeUtilities.isMethodInvocationConvertible(sourceType, targetType2)) {
+ return Comparison.TYPE_1_BETTER;
+ }
+ } else if(TypeUtilities.isMethodInvocationConvertible(sourceType, targetType2)) {
+ return Comparison.TYPE_2_BETTER;
+ }
+ return Comparison.INDETERMINATE;
+ }
+
+ /**
+ * Determines whether it's safe to perform an automatic conversion between the source and target class.
+ *
+ * @param fromType convert from this class
+ * @param toType convert to this class
+ * @return true if it's safe to let MethodHandles.convertArguments() to handle this conversion.
+ */
+ /*private*/ static boolean canAutoConvert(final Class fromType, final Class toType) {
+ return TypeUtilities.isMethodInvocationConvertible(fromType, toType);
+ }
+
+ /*private*/ MethodHandle getCacheableTypeConverterNull(final Class sourceType, final Class targetType) {
+ final MethodHandle converter = getCacheableTypeConverter(sourceType, targetType);
+ return converter == IDENTITY_CONVERSION ? null : converter;
+ }
+
+ /*private*/ MethodHandle getTypeConverterNull(final Class sourceType, final Class targetType) {
+ try {
+ return getCacheableTypeConverterNull(sourceType, targetType);
+ } catch(final NotCacheableConverter e) {
+ return e.converter;
+ }
+ }
+
+ /*private*/ MethodHandle getCacheableTypeConverter(final Class sourceType, final Class targetType) {
+ return converterMap.get(sourceType).get(targetType);
+ }
+
+ /**
+ * Given a source and target type, returns a method handle that converts between them. Never returns null; in worst
+ * case it will return an identity conversion (that might fail for some values at runtime). You can use this method
+ * if you have a piece of your program that is written in Java, and you need to reuse existing type conversion
+ * machinery in a non-invokedynamic context.
+ * @param sourceType the type to convert from
+ * @param targetType the type to convert to
+ * @return a method handle performing the conversion.
+ */
+ MethodHandle getTypeConverter(final Class sourceType, final Class targetType) {
+ try {
+ return converterIdentityMap.get(sourceType).get(targetType);
+ } catch(final NotCacheableConverter e) {
+ return e.converter;
+ }
+ }
+
+ private static class LookupSupplier implements Supplier {
+ volatile boolean returnedLookup;
+ volatile boolean closed;
+
+ @Override
+ public Lookup get() {
+ if (closed) {
+ // Something held on to this supplier and tried to invoke it
+ // after we're done with it.
+ throw new IllegalStateException();
+ }
+ final Lookup lookup = LinkerServicesImpl.getCurrentLookup();
+ returnedLookup = true;
+ return lookup;
+ }
+ }
+
+ /*private*/ MethodHandle createConverter(final Class sourceType, final Class targetType) throws Exception {
+ final MethodType type = MethodType.methodType(targetType, sourceType);
+ final MethodHandle identity = IDENTITY_CONVERSION.asType(type);
+ MethodHandle last = identity;
+
+ final LookupSupplier lookupSupplier = new LookupSupplier();
+ try {
+ for(int i = factories.length; i-- > 0;) {
+ final GuardedInvocation next = factories[i].convertToType(sourceType, targetType, lookupSupplier);
+ if(next != null) {
+ last = next.compose(last);
+ }
+ }
+ } finally {
+ lookupSupplier.closed = true;
+ }
+
+ if(last == identity) {
+ return IDENTITY_CONVERSION;
+ }
+ if(!lookupSupplier.returnedLookup) {
+ return last;
+ }
+ // At least one of the consulted converter factories obtained the
+ // lookup, so we must presume the created converter is sensitive to the
+ // lookup class and thus we will not cache it.
+ throw new NotCacheableConverter(last);
+ }
+
+ /*private*/ static final MethodHandle IDENTITY_CONVERSION = MethodHandles.identity(Object.class);
+
+ @SuppressWarnings("serial")
+ private static class NotCacheableConverter extends RuntimeException {
+ final MethodHandle converter;
+
+ NotCacheableConverter(final MethodHandle converter) {
+ super("", null, false, false);
+ this.converter = converter;
+ }
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/AbstractJavaLinker.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/AbstractJavaLinker.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,890 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import java.lang.reflect.AccessibleObject;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.Member;
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import jdk.dynalink.CallSiteDescriptor;
+import jdk.dynalink.CompositeOperation;
+import jdk.dynalink.NamedOperation;
+import jdk.dynalink.Operation;
+import jdk.dynalink.StandardOperation;
+import jdk.dynalink.beans.GuardedInvocationComponent.ValidationType;
+import jdk.dynalink.internal.InternalTypeUtilities;
+import jdk.dynalink.linker.GuardedInvocation;
+import jdk.dynalink.linker.GuardingDynamicLinker;
+import jdk.dynalink.linker.LinkRequest;
+import jdk.dynalink.linker.LinkerServices;
+import jdk.dynalink.linker.support.Guards;
+import jdk.dynalink.linker.support.Lookup;
+import sun.reflect.CallerSensitive;
+
+/**
+ * A base class for both {@link StaticClassLinker} and {@link BeanLinker}. Deals with common aspects of property
+ * exposure and method calls for both static and instance facets of a class.
+ */
+abstract class AbstractJavaLinker implements GuardingDynamicLinker {
+
+ final Class clazz;
+ private final MethodHandle classGuard;
+ private final MethodHandle assignableGuard;
+ private final Map propertyGetters = new HashMap<>();
+ private final Map propertySetters = new HashMap<>();
+ private final Map methods = new HashMap<>();
+
+ AbstractJavaLinker(final Class clazz, final MethodHandle classGuard) {
+ this(clazz, classGuard, classGuard);
+ }
+
+ AbstractJavaLinker(final Class clazz, final MethodHandle classGuard, final MethodHandle assignableGuard) {
+ this.clazz = clazz;
+ this.classGuard = classGuard;
+ this.assignableGuard = assignableGuard;
+
+ final FacetIntrospector introspector = createFacetIntrospector();
+ // Add methods and properties
+ for(final Method method: introspector.getMethods()) {
+ final String name = method.getName();
+ // Add method
+ addMember(name, method, methods);
+ // Add the method as a property getter and/or setter
+ if(name.startsWith("get") && name.length() > 3 && method.getParameterTypes().length == 0) {
+ // Property getter
+ setPropertyGetter(method, 3);
+ } else if(name.startsWith("is") && name.length() > 2 && method.getParameterTypes().length == 0 &&
+ method.getReturnType() == boolean.class) {
+ // Boolean property getter
+ setPropertyGetter(method, 2);
+ } else if(name.startsWith("set") && name.length() > 3 && method.getParameterTypes().length == 1) {
+ // Property setter
+ addMember(decapitalize(name.substring(3)), method, propertySetters);
+ }
+ }
+
+ // Add field getter/setters as property getters/setters.
+ for(final Field field: introspector.getFields()) {
+ final String name = field.getName();
+ // Only add a property getter when one is not defined already as a getXxx()/isXxx() method.
+ if(!propertyGetters.containsKey(name)) {
+ setPropertyGetter(name, introspector.unreflectGetter(field), ValidationType.EXACT_CLASS);
+ }
+ if(!(Modifier.isFinal(field.getModifiers()) || propertySetters.containsKey(name))) {
+ addMember(name, new SimpleDynamicMethod(introspector.unreflectSetter(field), clazz, name),
+ propertySetters);
+ }
+ }
+
+ // Add inner classes, but only those for which we don't hide a property with it
+ for(final Map.Entry innerClassSpec: introspector.getInnerClassGetters().entrySet()) {
+ final String name = innerClassSpec.getKey();
+ if(!propertyGetters.containsKey(name)) {
+ setPropertyGetter(name, innerClassSpec.getValue(), ValidationType.EXACT_CLASS);
+ }
+ }
+ }
+
+ private static String decapitalize(final String str) {
+ assert str != null;
+ if(str.isEmpty()) {
+ return str;
+ }
+
+ final char c0 = str.charAt(0);
+ if(Character.isLowerCase(c0)) {
+ return str;
+ }
+
+ // If it has two consecutive upper-case characters, i.e. "URL", don't decapitalize
+ if(str.length() > 1 && Character.isUpperCase(str.charAt(1))) {
+ return str;
+ }
+
+ final char c[] = str.toCharArray();
+ c[0] = Character.toLowerCase(c0);
+ return new String(c);
+ }
+
+ abstract FacetIntrospector createFacetIntrospector();
+
+ Set getReadablePropertyNames() {
+ return getUnmodifiableKeys(propertyGetters);
+ }
+
+ Set getWritablePropertyNames() {
+ return getUnmodifiableKeys(propertySetters);
+ }
+
+ Set getMethodNames() {
+ return getUnmodifiableKeys(methods);
+ }
+
+ private static Set getUnmodifiableKeys(final Map m) {
+ return Collections.unmodifiableSet(m.keySet());
+ }
+
+ /**
+ * Sets the specified dynamic method to be the property getter for the specified property. Note that you can only
+ * use this when you're certain that the method handle does not belong to a caller-sensitive method. For properties
+ * that are caller-sensitive, you must use {@link #setPropertyGetter(String, SingleDynamicMethod, ValidationType)}
+ * instead.
+ * @param name name of the property
+ * @param handle the method handle that implements the property getter
+ * @param validationType the validation type for the property
+ */
+ private void setPropertyGetter(final String name, final SingleDynamicMethod handle, final ValidationType validationType) {
+ propertyGetters.put(name, new AnnotatedDynamicMethod(handle, validationType));
+ }
+
+ /**
+ * Sets the specified reflective method to be the property getter for the specified property.
+ * @param getter the getter method
+ * @param prefixLen the getter prefix in the method name; should be 3 for getter names starting with "get" and 2 for
+ * names starting with "is".
+ */
+ private void setPropertyGetter(final Method getter, final int prefixLen) {
+ setPropertyGetter(decapitalize(getter.getName().substring(prefixLen)), createDynamicMethod(
+ getMostGenericGetter(getter)), ValidationType.INSTANCE_OF);
+ }
+
+ /**
+ * Sets the specified method handle to be the property getter for the specified property. Note that you can only
+ * use this when you're certain that the method handle does not belong to a caller-sensitive method. For properties
+ * that are caller-sensitive, you must use {@link #setPropertyGetter(String, SingleDynamicMethod, ValidationType)}
+ * instead.
+ * @param name name of the property
+ * @param handle the method handle that implements the property getter
+ * @param validationType the validation type for the property
+ */
+ void setPropertyGetter(final String name, final MethodHandle handle, final ValidationType validationType) {
+ setPropertyGetter(name, new SimpleDynamicMethod(handle, clazz, name), validationType);
+ }
+
+ private void addMember(final String name, final AccessibleObject ao, final Map methodMap) {
+ addMember(name, createDynamicMethod(ao), methodMap);
+ }
+
+ private void addMember(final String name, final SingleDynamicMethod method, final Map methodMap) {
+ final DynamicMethod existingMethod = methodMap.get(name);
+ final DynamicMethod newMethod = mergeMethods(method, existingMethod, clazz, name);
+ if(newMethod != existingMethod) {
+ methodMap.put(name, newMethod);
+ }
+ }
+
+ /**
+ * Given one or more reflective methods or constructors, creates a dynamic method that represents them all. The
+ * methods should represent all overloads of the same name (or all constructors of the class).
+ * @param members the reflective members
+ * @param clazz the class declaring the reflective members
+ * @param name the common name of the reflective members.
+ * @return a dynamic method representing all the specified reflective members.
+ */
+ static DynamicMethod createDynamicMethod(final Iterable members, final Class clazz, final String name) {
+ DynamicMethod dynMethod = null;
+ for(final AccessibleObject method: members) {
+ dynMethod = mergeMethods(createDynamicMethod(method), dynMethod, clazz, name);
+ }
+ return dynMethod;
+ }
+
+ /**
+ * Given a reflective method or a constructor, creates a dynamic method that represents it. This method will
+ * distinguish between caller sensitive and ordinary methods/constructors, and create appropriate caller sensitive
+ * dynamic method when needed.
+ * @param m the reflective member
+ * @return the single dynamic method representing the reflective member
+ */
+ private static SingleDynamicMethod createDynamicMethod(final AccessibleObject m) {
+ if (m.isAnnotationPresent(CallerSensitive.class)) {
+ // Method has @CallerSensitive annotation
+ return new CallerSensitiveDynamicMethod(m);
+ }
+ // Method has no @CallerSensitive annotation
+ final MethodHandle mh;
+ try {
+ mh = unreflectSafely(m);
+ } catch (final IllegalAccessError e) {
+ // java.lang.invoke can in some case conservatively treat as caller sensitive methods that aren't
+ // marked with the annotation. In this case, we'll fall back to treating it as caller sensitive.
+ return new CallerSensitiveDynamicMethod(m);
+ }
+ // Proceed with non-caller sensitive
+ final Member member = (Member)m;
+ return new SimpleDynamicMethod(mh, member.getDeclaringClass(), member.getName(), m instanceof Constructor);
+ }
+
+ /**
+ * Unreflects a method handle from a Method or a Constructor using safe (zero-privilege) unreflection. Should be
+ * only used for methods and constructors that are not caller sensitive. If a caller sensitive method were
+ * unreflected through this mechanism, it would not be a security issue, but would be bound to the zero-privilege
+ * unreflector as its caller, and thus completely useless.
+ * @param m the method or constructor
+ * @return the method handle
+ */
+ private static MethodHandle unreflectSafely(final AccessibleObject m) {
+ if(m instanceof Method) {
+ final Method reflMethod = (Method)m;
+ final MethodHandle handle = Lookup.PUBLIC.unreflect(reflMethod);
+ if(Modifier.isStatic(reflMethod.getModifiers())) {
+ return StaticClassIntrospector.editStaticMethodHandle(handle);
+ }
+ return handle;
+ }
+ return StaticClassIntrospector.editConstructorMethodHandle(Lookup.PUBLIC.unreflectConstructor((Constructor)m));
+ }
+
+ private static DynamicMethod mergeMethods(final SingleDynamicMethod method, final DynamicMethod existing, final Class clazz, final String name) {
+ if(existing == null) {
+ return method;
+ } else if(existing.contains(method)) {
+ return existing;
+ } else if(existing instanceof SingleDynamicMethod) {
+ final OverloadedDynamicMethod odm = new OverloadedDynamicMethod(clazz, name);
+ odm.addMethod(((SingleDynamicMethod)existing));
+ odm.addMethod(method);
+ return odm;
+ } else if(existing instanceof OverloadedDynamicMethod) {
+ ((OverloadedDynamicMethod)existing).addMethod(method);
+ return existing;
+ }
+ throw new AssertionError();
+ }
+
+ @Override
+ public GuardedInvocation getGuardedInvocation(final LinkRequest request, final LinkerServices linkerServices)
+ throws Exception {
+ final CallSiteDescriptor callSiteDescriptor = request.getCallSiteDescriptor();
+
+ // Handle NamedOperation(CALL_METHOD, name) separately
+ final Operation operation = callSiteDescriptor.getOperation();
+ if (operation instanceof NamedOperation) {
+ final NamedOperation namedOperation = (NamedOperation)operation;
+ if (namedOperation.getBaseOperation() == StandardOperation.CALL_METHOD) {
+ return createGuardedDynamicMethodInvocation(callSiteDescriptor,
+ linkerServices, namedOperation.getName().toString(), methods);
+ }
+ }
+
+ List operations = Arrays.asList(
+ CompositeOperation.getOperations(
+ NamedOperation.getBaseOperation(operation)));
+ final Object name = NamedOperation.getName(operation);
+
+ while(!operations.isEmpty()) {
+ final GuardedInvocationComponent gic =
+ getGuardedInvocationComponent(callSiteDescriptor,
+ linkerServices, operations, name);
+ if(gic != null) {
+ return gic.getGuardedInvocation();
+ }
+ operations = pop(operations);
+ }
+ return null;
+ }
+
+ protected GuardedInvocationComponent getGuardedInvocationComponent(
+ final CallSiteDescriptor callSiteDescriptor,
+ final LinkerServices linkerServices,
+ final List operations, final Object name)
+ throws Exception {
+ if(operations.isEmpty()) {
+ return null;
+ }
+ final Operation op = operations.get(0);
+ // Either GET_PROPERTY:name(this) or GET_PROPERTY(this, name)
+ if(op == StandardOperation.GET_PROPERTY) {
+ return getPropertyGetter(callSiteDescriptor, linkerServices, pop(operations), name);
+ }
+ // Either SET_PROPERTY:name(this, value) or SET_PROPERTY(this, name, value)
+ if(op == StandardOperation.SET_PROPERTY) {
+ return getPropertySetter(callSiteDescriptor, linkerServices, pop(operations), name);
+ }
+ // Either GET_METHOD:name(this), or GET_METHOD(this, name)
+ if(op == StandardOperation.GET_METHOD) {
+ return getMethodGetter(callSiteDescriptor, linkerServices, pop(operations), name);
+ }
+ return null;
+ }
+
+ static final List pop(final List l) {
+ return l.subList(1, l.size());
+ }
+
+ MethodHandle getClassGuard(final CallSiteDescriptor desc) {
+ return getClassGuard(desc.getMethodType());
+ }
+
+ MethodHandle getClassGuard(final MethodType type) {
+ return Guards.asType(classGuard, type);
+ }
+
+ GuardedInvocationComponent getClassGuardedInvocationComponent(final MethodHandle invocation, final MethodType type) {
+ return new GuardedInvocationComponent(invocation, getClassGuard(type), clazz, ValidationType.EXACT_CLASS);
+ }
+
+ abstract SingleDynamicMethod getConstructorMethod(final String signature);
+
+ private MethodHandle getAssignableGuard(final MethodType type) {
+ return Guards.asType(assignableGuard, type);
+ }
+
+ private GuardedInvocation createGuardedDynamicMethodInvocation(final CallSiteDescriptor callSiteDescriptor,
+ final LinkerServices linkerServices, final String methodName, final Map methodMap){
+ final MethodHandle inv = getDynamicMethodInvocation(callSiteDescriptor, linkerServices, methodName, methodMap);
+ return inv == null ? null : new GuardedInvocation(inv, getClassGuard(callSiteDescriptor.getMethodType()));
+ }
+
+ private MethodHandle getDynamicMethodInvocation(final CallSiteDescriptor callSiteDescriptor,
+ final LinkerServices linkerServices, final String methodName, final Map methodMap) {
+ final DynamicMethod dynaMethod = getDynamicMethod(methodName, methodMap);
+ return dynaMethod != null ? dynaMethod.getInvocation(callSiteDescriptor, linkerServices) : null;
+ }
+
+ private DynamicMethod getDynamicMethod(final String methodName, final Map methodMap) {
+ final DynamicMethod dynaMethod = methodMap.get(methodName);
+ return dynaMethod != null ? dynaMethod : getExplicitSignatureDynamicMethod(methodName, methodMap);
+ }
+
+ private SingleDynamicMethod getExplicitSignatureDynamicMethod(final String fullName,
+ final Map methodsMap) {
+ // What's below is meant to support the "name(type, type, ...)" syntax that programmers can use in a method name
+ // to manually pin down an exact overloaded variant. This is not usually required, as the overloaded method
+ // resolution works correctly in almost every situation. However, in presence of many language-specific
+ // conversions with a radically dynamic language, most overloaded methods will end up being constantly selected
+ // at invocation time, so a programmer knowledgeable of the situation might choose to pin down an exact overload
+ // for performance reasons.
+
+ // Is the method name lexically of the form "name(types)"?
+ final int lastChar = fullName.length() - 1;
+ if(fullName.charAt(lastChar) != ')') {
+ return null;
+ }
+ final int openBrace = fullName.indexOf('(');
+ if(openBrace == -1) {
+ return null;
+ }
+
+ final String name = fullName.substring(0, openBrace);
+ final String signature = fullName.substring(openBrace + 1, lastChar);
+
+ // Find an existing method for the "name" part
+ final DynamicMethod simpleNamedMethod = methodsMap.get(name);
+ if(simpleNamedMethod == null) {
+ // explicit signature constructor access
+ // Java.type("java.awt.Color")["(int,int,int)"]
+ // will get Color(int,int,int) constructor of Color class.
+ if (name.isEmpty()) {
+ return getConstructorMethod(signature);
+ }
+
+ return null;
+ }
+
+ // Try to get a narrowed dynamic method for the explicit parameter types.
+ return simpleNamedMethod.getMethodForExactParamTypes(signature);
+ }
+
+ private static final MethodHandle IS_METHOD_HANDLE_NOT_NULL = Guards.isNotNull().asType(MethodType.methodType(
+ boolean.class, MethodHandle.class));
+ private static final MethodHandle CONSTANT_NULL_DROP_METHOD_HANDLE = MethodHandles.dropArguments(
+ MethodHandles.constant(Object.class, null), 0, MethodHandle.class);
+
+ private GuardedInvocationComponent getPropertySetter(final CallSiteDescriptor callSiteDescriptor,
+ final LinkerServices linkerServices, final List operations, final Object name) throws Exception {
+ if (name == null) {
+ return getUnnamedPropertySetter(callSiteDescriptor, linkerServices, operations);
+ }
+ return getNamedPropertySetter(callSiteDescriptor, linkerServices, operations, name);
+ }
+
+ private GuardedInvocationComponent getUnnamedPropertySetter(final CallSiteDescriptor callSiteDescriptor,
+ final LinkerServices linkerServices, final List operations) throws Exception {
+ // Must have three arguments: target object, property name, and property value.
+ assertParameterCount(callSiteDescriptor, 3);
+
+ // We want setters that conform to "Object(O, V)". Note, we aren't doing "R(O, V)" as it might not be
+ // valid for us to convert return values proactively. Also, since we don't know what setters will be
+ // invoked, we'll conservatively presume Object return type. The one exception is void return.
+ final MethodType origType = callSiteDescriptor.getMethodType();
+ final MethodType type = origType.returnType() == void.class ? origType : origType.changeReturnType(Object.class);
+
+ // What's below is basically:
+ // foldArguments(guardWithTest(isNotNull, invoke, null|nextComponent.invocation),
+ // get_setter_handle(type, linkerServices))
+ // only with a bunch of method signature adjustments. Basically, retrieve method setter
+ // MethodHandle; if it is non-null, invoke it, otherwise either return null, or delegate to next
+ // component's invocation.
+
+ // Call site type is "ret_type(object_type,property_name_type,property_value_type)", which we'll
+ // abbreviate to R(O, N, V) going forward, although we don't really use R here (see above about using
+ // Object return type).
+ final MethodType setterType = type.dropParameterTypes(1, 2);
+ // Bind property setter handle to the expected setter type and linker services. Type is
+ // MethodHandle(Object, String, Object)
+ final MethodHandle boundGetter = MethodHandles.insertArguments(getPropertySetterHandle, 0,
+ callSiteDescriptor.changeMethodType(setterType), linkerServices);
+
+ // Cast getter to MethodHandle(O, N, V)
+ final MethodHandle typedGetter = linkerServices.asType(boundGetter, type.changeReturnType(
+ MethodHandle.class));
+
+ // Handle to invoke the setter R(MethodHandle, O, V)
+ final MethodHandle invokeHandle = MethodHandles.exactInvoker(setterType);
+ // Handle to invoke the setter, dropping unnecessary fold arguments R(MethodHandle, O, N, V)
+ final MethodHandle invokeHandleFolded = MethodHandles.dropArguments(invokeHandle, 2, type.parameterType(
+ 1));
+ final GuardedInvocationComponent nextComponent = getGuardedInvocationComponent(callSiteDescriptor,
+ linkerServices, operations, null);
+
+ final MethodHandle fallbackFolded;
+ if(nextComponent == null) {
+ // Object(MethodHandle)->Object(MethodHandle, O, N, V); returns constant null
+ fallbackFolded = MethodHandles.dropArguments(CONSTANT_NULL_DROP_METHOD_HANDLE, 1,
+ type.parameterList()).asType(type.insertParameterTypes(0, MethodHandle.class));
+ } else {
+ // Object(O, N, V)->Object(MethodHandle, O, N, V); adapts the next component's invocation to drop the
+ // extra argument resulting from fold
+ fallbackFolded = MethodHandles.dropArguments(nextComponent.getGuardedInvocation().getInvocation(),
+ 0, MethodHandle.class);
+ }
+
+ // fold(R(MethodHandle, O, N, V), MethodHandle(O, N, V))
+ final MethodHandle compositeSetter = MethodHandles.foldArguments(MethodHandles.guardWithTest(
+ IS_METHOD_HANDLE_NOT_NULL, invokeHandleFolded, fallbackFolded), typedGetter);
+ if(nextComponent == null) {
+ return getClassGuardedInvocationComponent(compositeSetter, type);
+ }
+ return nextComponent.compose(compositeSetter, getClassGuard(type), clazz, ValidationType.EXACT_CLASS);
+ }
+
+ private GuardedInvocationComponent getNamedPropertySetter(final CallSiteDescriptor callSiteDescriptor,
+ final LinkerServices linkerServices, final List operations, final Object name) throws Exception {
+ // Must have two arguments: target object and property value
+ assertParameterCount(callSiteDescriptor, 2);
+ final GuardedInvocation gi = createGuardedDynamicMethodInvocation(callSiteDescriptor, linkerServices,
+ name.toString(), propertySetters);
+ // If we have a property setter with this name, this composite operation will always stop here
+ if(gi != null) {
+ return new GuardedInvocationComponent(gi, clazz, ValidationType.EXACT_CLASS);
+ }
+ // If we don't have a property setter with this name, always fall back to the next operation in the
+ // composite (if any)
+ return getGuardedInvocationComponent(callSiteDescriptor, linkerServices, operations, name);
+ }
+
+ private static final Lookup privateLookup = new Lookup(MethodHandles.lookup());
+
+ private static final MethodHandle IS_ANNOTATED_METHOD_NOT_NULL = Guards.isNotNull().asType(MethodType.methodType(
+ boolean.class, AnnotatedDynamicMethod.class));
+ private static final MethodHandle CONSTANT_NULL_DROP_ANNOTATED_METHOD = MethodHandles.dropArguments(
+ MethodHandles.constant(Object.class, null), 0, AnnotatedDynamicMethod.class);
+ private static final MethodHandle GET_ANNOTATED_METHOD = privateLookup.findVirtual(AnnotatedDynamicMethod.class,
+ "getTarget", MethodType.methodType(MethodHandle.class, CallSiteDescriptor.class, LinkerServices.class));
+ private static final MethodHandle GETTER_INVOKER = MethodHandles.invoker(MethodType.methodType(Object.class, Object.class));
+
+ private GuardedInvocationComponent getPropertyGetter(final CallSiteDescriptor callSiteDescriptor,
+ final LinkerServices linkerServices, final List ops, final Object name) throws Exception {
+ if (name == null) {
+ return getUnnamedPropertyGetter(callSiteDescriptor, linkerServices, ops);
+ }
+
+ return getNamedPropertyGetter(callSiteDescriptor, linkerServices, ops, name);
+ }
+
+ private GuardedInvocationComponent getUnnamedPropertyGetter(final CallSiteDescriptor callSiteDescriptor,
+ final LinkerServices linkerServices, final List ops) throws Exception {
+ // Since we can't know what kind of a getter we'll get back on different invocations, we'll just
+ // conservatively presume Object. Note we can't just coerce to a narrower call site type as the linking
+ // runtime might not allow coercing at that call site.
+ final MethodType type = callSiteDescriptor.getMethodType().changeReturnType(Object.class);
+ // Must have exactly two arguments: receiver and name
+ assertParameterCount(callSiteDescriptor, 2);
+
+ // What's below is basically:
+ // foldArguments(guardWithTest(isNotNull, invoke(get_handle), null|nextComponent.invocation), get_getter_handle)
+ // only with a bunch of method signature adjustments. Basically, retrieve method getter
+ // AnnotatedDynamicMethod; if it is non-null, invoke its "handle" field, otherwise either return null,
+ // or delegate to next component's invocation.
+
+ final MethodHandle typedGetter = linkerServices.asType(getPropertyGetterHandle, type.changeReturnType(
+ AnnotatedDynamicMethod.class));
+ final MethodHandle callSiteBoundMethodGetter = MethodHandles.insertArguments(
+ GET_ANNOTATED_METHOD, 1, callSiteDescriptor, linkerServices);
+ final MethodHandle callSiteBoundInvoker = MethodHandles.filterArguments(GETTER_INVOKER, 0,
+ callSiteBoundMethodGetter);
+ // Object(AnnotatedDynamicMethod, Object)->Object(AnnotatedDynamicMethod, T0)
+ final MethodHandle invokeHandleTyped = linkerServices.asType(callSiteBoundInvoker,
+ MethodType.methodType(type.returnType(), AnnotatedDynamicMethod.class, type.parameterType(0)));
+ // Since it's in the target of a fold, drop the unnecessary second argument
+ // Object(AnnotatedDynamicMethod, T0)->Object(AnnotatedDynamicMethod, T0, T1)
+ final MethodHandle invokeHandleFolded = MethodHandles.dropArguments(invokeHandleTyped, 2,
+ type.parameterType(1));
+ final GuardedInvocationComponent nextComponent = getGuardedInvocationComponent(callSiteDescriptor,
+ linkerServices, ops, null);
+
+ final MethodHandle fallbackFolded;
+ if(nextComponent == null) {
+ // Object(AnnotatedDynamicMethod)->Object(AnnotatedDynamicMethod, T0, T1); returns constant null
+ fallbackFolded = MethodHandles.dropArguments(CONSTANT_NULL_DROP_ANNOTATED_METHOD, 1,
+ type.parameterList()).asType(type.insertParameterTypes(0, AnnotatedDynamicMethod.class));
+ } else {
+ // Object(T0, T1)->Object(AnnotatedDynamicMethod, T0, T1); adapts the next component's invocation to
+ // drop the extra argument resulting from fold and to change its return type to Object.
+ final MethodHandle nextInvocation = nextComponent.getGuardedInvocation().getInvocation();
+ final MethodType nextType = nextInvocation.type();
+ fallbackFolded = MethodHandles.dropArguments(nextInvocation.asType(
+ nextType.changeReturnType(Object.class)), 0, AnnotatedDynamicMethod.class);
+ }
+
+ // fold(Object(AnnotatedDynamicMethod, T0, T1), AnnotatedDynamicMethod(T0, T1))
+ final MethodHandle compositeGetter = MethodHandles.foldArguments(MethodHandles.guardWithTest(
+ IS_ANNOTATED_METHOD_NOT_NULL, invokeHandleFolded, fallbackFolded), typedGetter);
+ if(nextComponent == null) {
+ return getClassGuardedInvocationComponent(compositeGetter, type);
+ }
+ return nextComponent.compose(compositeGetter, getClassGuard(type), clazz, ValidationType.EXACT_CLASS);
+ }
+
+ private GuardedInvocationComponent getNamedPropertyGetter(final CallSiteDescriptor callSiteDescriptor,
+ final LinkerServices linkerServices, final List ops, final Object name) throws Exception {
+ // Must have exactly one argument: receiver
+ assertParameterCount(callSiteDescriptor, 1);
+ // Fixed name
+ final AnnotatedDynamicMethod annGetter = propertyGetters.get(name.toString());
+ if(annGetter == null) {
+ // We have no such property, always delegate to the next component operation
+ return getGuardedInvocationComponent(callSiteDescriptor, linkerServices, ops, name);
+ }
+ final MethodHandle getter = annGetter.getInvocation(callSiteDescriptor, linkerServices);
+ // NOTE: since property getters (not field getters!) are no-arg, we don't have to worry about them being
+ // overloaded in a subclass. Therefore, we can discover the most abstract superclass that has the
+ // method, and use that as the guard with Guards.isInstance() for a more stably linked call site. If
+ // we're linking against a field getter, don't make the assumption.
+ // NOTE: No delegation to the next component operation if we have a property with this name, even if its
+ // value is null.
+ final ValidationType validationType = annGetter.validationType;
+ // TODO: we aren't using the type that declares the most generic getter here!
+ return new GuardedInvocationComponent(getter, getGuard(validationType,
+ callSiteDescriptor.getMethodType()), clazz, validationType);
+ }
+
+ private MethodHandle getGuard(final ValidationType validationType, final MethodType methodType) {
+ switch(validationType) {
+ case EXACT_CLASS: {
+ return getClassGuard(methodType);
+ }
+ case INSTANCE_OF: {
+ return getAssignableGuard(methodType);
+ }
+ case IS_ARRAY: {
+ return Guards.isArray(0, methodType);
+ }
+ case NONE: {
+ return null;
+ }
+ default: {
+ throw new AssertionError();
+ }
+ }
+ }
+
+ private static final MethodHandle IS_DYNAMIC_METHOD = Guards.isInstance(DynamicMethod.class,
+ MethodType.methodType(boolean.class, Object.class));
+ private static final MethodHandle OBJECT_IDENTITY = MethodHandles.identity(Object.class);
+
+ private GuardedInvocationComponent getMethodGetter(final CallSiteDescriptor callSiteDescriptor,
+ final LinkerServices linkerServices, final List ops, final Object name) throws Exception {
+ // The created method handle will always return a DynamicMethod (or null), but since we don't want that type to
+ // be visible outside of this linker, declare it to return Object.
+ final MethodType type = callSiteDescriptor.getMethodType().changeReturnType(Object.class);
+ if (name == null) {
+ return getUnnamedMethodGetter(callSiteDescriptor, linkerServices, ops, type);
+ }
+
+ return getNamedMethodGetter(callSiteDescriptor, linkerServices, ops, name, type);
+ }
+
+ private GuardedInvocationComponent getUnnamedMethodGetter(final CallSiteDescriptor callSiteDescriptor,
+ final LinkerServices linkerServices, final List ops, final MethodType type) throws Exception {
+ // Must have exactly two arguments: receiver and name
+ assertParameterCount(callSiteDescriptor, 2);
+ final GuardedInvocationComponent nextComponent = getGuardedInvocationComponent(callSiteDescriptor,
+ linkerServices, ops, null);
+ if(nextComponent == null || !InternalTypeUtilities.areAssignable(DynamicMethod.class,
+ nextComponent.getGuardedInvocation().getInvocation().type().returnType())) {
+ // No next component operation, or it can never produce a dynamic method; just return a component
+ // for this operation.
+ return getClassGuardedInvocationComponent(linkerServices.asType(getDynamicMethod, type), type);
+ }
+
+ // What's below is basically:
+ // foldArguments(guardWithTest(isNotNull, identity, nextComponent.invocation), getter) only with a
+ // bunch of method signature adjustments. Basically, execute method getter; if it returns a non-null
+ // DynamicMethod, use identity to return it, otherwise delegate to nextComponent's invocation.
+
+ final MethodHandle typedGetter = linkerServices.asType(getDynamicMethod, type);
+ // Since it is part of the foldArgument() target, it will have extra args that we need to drop.
+ final MethodHandle returnMethodHandle = linkerServices.asType(MethodHandles.dropArguments(
+ OBJECT_IDENTITY, 1, type.parameterList()), type.insertParameterTypes(0, Object.class));
+ final MethodHandle nextComponentInvocation = nextComponent.getGuardedInvocation().getInvocation();
+ // The assumption is that getGuardedInvocationComponent() already asType()'d it correctly modulo the
+ // return type.
+ assert nextComponentInvocation.type().changeReturnType(type.returnType()).equals(type);
+ // Since it is part of the foldArgument() target, we have to drop an extra arg it receives.
+ final MethodHandle nextCombinedInvocation = MethodHandles.dropArguments(nextComponentInvocation, 0,
+ Object.class);
+ // Assemble it all into a fold(guard(isNotNull, identity, nextInvocation), get)
+ final MethodHandle compositeGetter = MethodHandles.foldArguments(MethodHandles.guardWithTest(
+ IS_DYNAMIC_METHOD, returnMethodHandle, nextCombinedInvocation), typedGetter);
+
+ return nextComponent.compose(compositeGetter, getClassGuard(type), clazz, ValidationType.EXACT_CLASS);
+ }
+
+ private GuardedInvocationComponent getNamedMethodGetter(final CallSiteDescriptor callSiteDescriptor,
+ final LinkerServices linkerServices, final List ops, final Object name, final MethodType type)
+ throws Exception {
+ // Must have exactly one argument: receiver
+ assertParameterCount(callSiteDescriptor, 1);
+ final DynamicMethod method = getDynamicMethod(name.toString());
+ if(method == null) {
+ // We have no such method, always delegate to the next component
+ return getGuardedInvocationComponent(callSiteDescriptor, linkerServices, ops, name);
+ }
+ // No delegation to the next component of the composite operation; if we have a method with that name,
+ // we'll always return it at this point.
+ return getClassGuardedInvocationComponent(linkerServices.asType(MethodHandles.dropArguments(
+ MethodHandles.constant(Object.class, method), 0, type.parameterType(0)), type), type);
+ }
+
+ static class MethodPair {
+ final MethodHandle method1;
+ final MethodHandle method2;
+
+ MethodPair(final MethodHandle method1, final MethodHandle method2) {
+ this.method1 = method1;
+ this.method2 = method2;
+ }
+
+ MethodHandle guardWithTest(final MethodHandle test) {
+ return MethodHandles.guardWithTest(test, method1, method2);
+ }
+ }
+
+ static MethodPair matchReturnTypes(final MethodHandle m1, final MethodHandle m2) {
+ final MethodType type1 = m1.type();
+ final MethodType type2 = m2.type();
+ final Class commonRetType = InternalTypeUtilities.getCommonLosslessConversionType(type1.returnType(),
+ type2.returnType());
+ return new MethodPair(
+ m1.asType(type1.changeReturnType(commonRetType)),
+ m2.asType(type2.changeReturnType(commonRetType)));
+ }
+
+ private static void assertParameterCount(final CallSiteDescriptor descriptor, final int paramCount) {
+ if(descriptor.getMethodType().parameterCount() != paramCount) {
+ throw new BootstrapMethodError(descriptor.getOperation() + " must have exactly " + paramCount + " parameters.");
+ }
+ }
+
+ private static MethodHandle GET_PROPERTY_GETTER_HANDLE = MethodHandles.dropArguments(privateLookup.findOwnSpecial(
+ "getPropertyGetterHandle", Object.class, Object.class), 1, Object.class);
+ private final MethodHandle getPropertyGetterHandle = GET_PROPERTY_GETTER_HANDLE.bindTo(this);
+
+ /**
+ * @param id the property ID
+ * @return the method handle for retrieving the property, or null if the property does not exist
+ */
+ @SuppressWarnings("unused")
+ private Object getPropertyGetterHandle(final Object id) {
+ return propertyGetters.get(id);
+ }
+
+ // Type is MethodHandle(BeanLinker, MethodType, LinkerServices, Object, String, Object), of which the two "Object"
+ // args are dropped; this makes handles with first three args conform to "Object, String, Object" though, which is
+ // a typical property setter with variable name signature (target, name, value).
+ private static final MethodHandle GET_PROPERTY_SETTER_HANDLE = MethodHandles.dropArguments(MethodHandles.dropArguments(
+ privateLookup.findOwnSpecial("getPropertySetterHandle", MethodHandle.class, CallSiteDescriptor.class,
+ LinkerServices.class, Object.class), 3, Object.class), 5, Object.class);
+ // Type is MethodHandle(MethodType, LinkerServices, Object, String, Object)
+ private final MethodHandle getPropertySetterHandle = GET_PROPERTY_SETTER_HANDLE.bindTo(this);
+
+ @SuppressWarnings("unused")
+ private MethodHandle getPropertySetterHandle(final CallSiteDescriptor setterDescriptor, final LinkerServices linkerServices,
+ final Object id) {
+ return getDynamicMethodInvocation(setterDescriptor, linkerServices, String.valueOf(id), propertySetters);
+ }
+
+ private static MethodHandle GET_DYNAMIC_METHOD = MethodHandles.dropArguments(privateLookup.findOwnSpecial(
+ "getDynamicMethod", Object.class, Object.class), 1, Object.class);
+ private final MethodHandle getDynamicMethod = GET_DYNAMIC_METHOD.bindTo(this);
+
+ @SuppressWarnings("unused")
+ // This method is marked to return Object instead of DynamicMethod as it's used as a linking component and we don't
+ // want to make the DynamicMethod type observable externally (e.g. as the return type of a MethodHandle returned for
+ // GET_METHOD linking).
+ private Object getDynamicMethod(final Object name) {
+ return getDynamicMethod(String.valueOf(name), methods);
+ }
+
+ /**
+ * Returns a dynamic method of the specified name.
+ *
+ * @param name name of the method
+ * @return the dynamic method (either {@link SimpleDynamicMethod} or {@link OverloadedDynamicMethod}, or null if the
+ * method with the specified name does not exist.
+ */
+ DynamicMethod getDynamicMethod(final String name) {
+ return getDynamicMethod(name, methods);
+ }
+
+ /**
+ * Find the most generic superclass that declares this getter. Since getters have zero args (aside from the
+ * receiver), they can't be overloaded, so we're free to link with an instanceof guard for the most generic one,
+ * creating more stable call sites.
+ * @param getter the getter
+ * @return getter with same name, declared on the most generic superclass/interface of the declaring class
+ */
+ private static Method getMostGenericGetter(final Method getter) {
+ return getMostGenericGetter(getter.getName(), getter.getReturnType(), getter.getDeclaringClass());
+ }
+
+ private static Method getMostGenericGetter(final String name, final Class returnType, final Class declaringClass) {
+ if(declaringClass == null) {
+ return null;
+ }
+ // Prefer interfaces
+ for(final Class itf: declaringClass.getInterfaces()) {
+ final Method itfGetter = getMostGenericGetter(name, returnType, itf);
+ if(itfGetter != null) {
+ return itfGetter;
+ }
+ }
+ final Method superGetter = getMostGenericGetter(name, returnType, declaringClass.getSuperclass());
+ if(superGetter != null) {
+ return superGetter;
+ }
+ if(!CheckRestrictedPackage.isRestrictedClass(declaringClass)) {
+ try {
+ return declaringClass.getMethod(name);
+ } catch(final NoSuchMethodException e) {
+ // Intentionally ignored, meant to fall through
+ }
+ }
+ return null;
+ }
+
+ private static final class AnnotatedDynamicMethod {
+ private final SingleDynamicMethod method;
+ /*private*/ final ValidationType validationType;
+
+ AnnotatedDynamicMethod(final SingleDynamicMethod method, final ValidationType validationType) {
+ this.method = method;
+ this.validationType = validationType;
+ }
+
+ MethodHandle getInvocation(final CallSiteDescriptor callSiteDescriptor, final LinkerServices linkerServices) {
+ return method.getInvocation(callSiteDescriptor, linkerServices);
+ }
+
+ @SuppressWarnings("unused")
+ MethodHandle getTarget(final CallSiteDescriptor desc, final LinkerServices linkerServices) {
+ final MethodHandle inv = linkerServices.filterInternalObjects(method.getTarget(desc));
+ assert inv != null;
+ return inv;
+ }
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/AccessibleMembersLookup.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/AccessibleMembersLookup.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,263 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.LinkedHashSet;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * Utility class for discovering accessible methods and inner classes. Normally, a public member declared on a class is
+ * accessible (that is, it can be invoked from anywhere). However, this is not the case if the class itself is not
+ * public, or belongs to a restricted-access package. In that case, it is required to lookup a member in a publicly
+ * accessible superclass or implemented interface of the class, and use it instead of the member discovered on the
+ * class.
+ */
+class AccessibleMembersLookup {
+ private final Map methods;
+ private final Set> innerClasses;
+ private final boolean instance;
+
+ /**
+ * Creates a mapping for all accessible methods and inner classes on a class.
+ *
+ * @param clazz the inspected class
+ * @param instance true to inspect instance methods, false to inspect static methods.
+ */
+ AccessibleMembersLookup(final Class clazz, final boolean instance) {
+ this.methods = new HashMap<>();
+ this.innerClasses = new LinkedHashSet<>();
+ this.instance = instance;
+ lookupAccessibleMembers(clazz);
+ }
+
+ /**
+ * Returns an accessible method equivalent of a method.
+ *
+ * @param m the method whose accessible equivalent is requested.
+ * @return the accessible equivalent for the method (can be the same as the passed in method), or null if there is
+ * no accessible method equivalent.
+ */
+ Method getAccessibleMethod(final Method m) {
+ return m == null ? null : methods.get(new MethodSignature(m));
+ }
+
+ Collection getMethods() {
+ return methods.values();
+ }
+
+ Class[] getInnerClasses() {
+ return innerClasses.toArray(new Class[innerClasses.size()]);
+ }
+
+ /**
+ * A helper class that represents a method signature - name and argument types.
+ */
+ static final class MethodSignature {
+ private final String name;
+ private final Class[] args;
+
+ /**
+ * Creates a new method signature from arbitrary data.
+ *
+ * @param name the name of the method this signature represents.
+ * @param args the argument types of the method.
+ */
+ MethodSignature(final String name, final Class[] args) {
+ this.name = name;
+ this.args = args;
+ }
+
+ /**
+ * Creates a signature for the given method.
+ *
+ * @param method the method for which a signature is created.
+ */
+ MethodSignature(final Method method) {
+ this(method.getName(), method.getParameterTypes());
+ }
+
+ /**
+ * Compares this object to another object
+ *
+ * @param o the other object
+ * @return true if the other object is also a method signature with the same name, same number of arguments, and
+ * same types of arguments.
+ */
+ @Override
+ public boolean equals(final Object o) {
+ if(o instanceof MethodSignature) {
+ final MethodSignature ms = (MethodSignature)o;
+ return ms.name.equals(name) && Arrays.equals(args, ms.args);
+ }
+ return false;
+ }
+
+ /**
+ * Returns a hash code, consistent with the overridden {@link #equals(Object)}.
+ */
+ @Override
+ public int hashCode() {
+ return name.hashCode() ^ Arrays.hashCode(args);
+ }
+
+ @Override
+ public String toString() {
+ final StringBuilder b = new StringBuilder();
+ b.append("[MethodSignature ").append(name).append('(');
+ if(args.length > 0) {
+ b.append(args[0].getCanonicalName());
+ for(int i = 1; i < args.length; ++i) {
+ b.append(", ").append(args[i].getCanonicalName());
+ }
+ }
+ return b.append(")]").toString();
+ }
+ }
+
+ private void lookupAccessibleMembers(final Class clazz) {
+ boolean searchSuperTypes;
+
+ if(!CheckRestrictedPackage.isRestrictedClass(clazz)) {
+ searchSuperTypes = false;
+ for(final Method method: clazz.getMethods()) {
+ final boolean isStatic = Modifier.isStatic(method.getModifiers());
+ if(instance != isStatic) {
+ final MethodSignature sig = new MethodSignature(method);
+ if(!methods.containsKey(sig)) {
+ final Class declaringClass = method.getDeclaringClass();
+ if(declaringClass != clazz && CheckRestrictedPackage.isRestrictedClass(declaringClass)) {
+ //Sometimes, the declaring class of a method (Method.getDeclaringClass())
+ //retrieved through Class.getMethods() for a public class will be a
+ //non-public superclass. For such a method, we need to find a method with
+ //the same name and signature in a public superclass or implemented
+ //interface.
+ //This typically doesn't happen with classes emitted by a reasonably modern
+ //javac, as it'll create synthetic delegator methods in all public
+ //immediate subclasses of the non-public class. We have, however, observed
+ //this in the wild with class files compiled with older javac that doesn't
+ //generate the said synthetic delegators.
+ searchSuperTypes = true;
+ } else {
+ // don't allow inherited static
+ if (!isStatic || clazz == declaringClass) {
+ methods.put(sig, method);
+ }
+ }
+ }
+ }
+ }
+ for(final Class innerClass: clazz.getClasses()) {
+ // Add both static and non-static classes, regardless of instance flag. StaticClassLinker will just
+ // expose non-static classes with explicit constructor outer class argument.
+ // NOTE: getting inner class objects through getClasses() does not resolve them, so if those classes
+ // were not yet loaded, they'll only get loaded in a non-resolved state; no static initializers for
+ // them will trigger just by doing this.
+ innerClasses.add(innerClass);
+ }
+ } else {
+ searchSuperTypes = true;
+ }
+
+ // don't need to search super types for static methods
+ if(instance && searchSuperTypes) {
+ // If we reach here, the class is either not public, or it is in a restricted package. Alternatively, it is
+ // public, but some of its methods claim that their declaring class is non-public. We'll try superclasses
+ // and implemented interfaces then looking for public ones.
+ final Class[] interfaces = clazz.getInterfaces();
+ for(int i = 0; i < interfaces.length; i++) {
+ lookupAccessibleMembers(interfaces[i]);
+ }
+ final Class superclass = clazz.getSuperclass();
+ if(superclass != null) {
+ lookupAccessibleMembers(superclass);
+ }
+ }
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/ApplicableOverloadedMethods.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/ApplicableOverloadedMethods.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,217 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.lang.invoke.MethodType;
+import java.util.LinkedList;
+import java.util.List;
+import jdk.dynalink.linker.support.TypeUtilities;
+
+/**
+ * Represents overloaded methods applicable to a specific call site signature.
+ */
+class ApplicableOverloadedMethods {
+ private final List methods;
+ private final boolean varArgs;
+
+ /**
+ * Creates a new ApplicableOverloadedMethods instance
+ *
+ * @param methods a list of all overloaded methods with the same name for a class.
+ * @param callSiteType the type of the call site
+ * @param test applicability test. One of {@link #APPLICABLE_BY_SUBTYPING},
+ * {@link #APPLICABLE_BY_METHOD_INVOCATION_CONVERSION}, or {@link #APPLICABLE_BY_VARIABLE_ARITY}.
+ */
+ ApplicableOverloadedMethods(final List methods, final MethodType callSiteType,
+ final ApplicabilityTest test) {
+ this.methods = new LinkedList<>();
+ for(final SingleDynamicMethod m: methods) {
+ if(test.isApplicable(callSiteType, m)) {
+ this.methods.add(m);
+ }
+ }
+ varArgs = test == APPLICABLE_BY_VARIABLE_ARITY;
+ }
+
+ /**
+ * Retrieves all the methods this object holds.
+ *
+ * @return list of all methods.
+ */
+ List getMethods() {
+ return methods;
+ }
+
+ /**
+ * Returns a list of all methods in this objects that are maximally specific.
+ *
+ * @return a list of maximally specific methods.
+ */
+ List findMaximallySpecificMethods() {
+ return MaximallySpecific.getMaximallySpecificMethods(methods, varArgs);
+ }
+
+ abstract static class ApplicabilityTest {
+ abstract boolean isApplicable(MethodType callSiteType, SingleDynamicMethod method);
+ }
+
+ /**
+ * Implements the applicability-by-subtyping test from JLS 15.12.2.2.
+ */
+ static final ApplicabilityTest APPLICABLE_BY_SUBTYPING = new ApplicabilityTest() {
+ @Override
+ boolean isApplicable(final MethodType callSiteType, final SingleDynamicMethod method) {
+ final MethodType methodType = method.getMethodType();
+ final int methodArity = methodType.parameterCount();
+ if(methodArity != callSiteType.parameterCount()) {
+ return false;
+ }
+ // 0th arg is receiver; it doesn't matter for overload
+ // resolution.
+ for(int i = 1; i < methodArity; ++i) {
+ if(!TypeUtilities.isSubtype(callSiteType.parameterType(i), methodType.parameterType(i))) {
+ return false;
+ }
+ }
+ return true;
+ }
+ };
+
+ /**
+ * Implements the applicability-by-method-invocation-conversion test from JLS 15.12.2.3.
+ */
+ static final ApplicabilityTest APPLICABLE_BY_METHOD_INVOCATION_CONVERSION = new ApplicabilityTest() {
+ @Override
+ boolean isApplicable(final MethodType callSiteType, final SingleDynamicMethod method) {
+ final MethodType methodType = method.getMethodType();
+ final int methodArity = methodType.parameterCount();
+ if(methodArity != callSiteType.parameterCount()) {
+ return false;
+ }
+ // 0th arg is receiver; it doesn't matter for overload
+ // resolution.
+ for(int i = 1; i < methodArity; ++i) {
+ if(!TypeUtilities.isMethodInvocationConvertible(callSiteType.parameterType(i),
+ methodType.parameterType(i))) {
+ return false;
+ }
+ }
+ return true;
+ }
+ };
+
+ /**
+ * Implements the applicability-by-variable-arity test from JLS 15.12.2.4.
+ */
+ static final ApplicabilityTest APPLICABLE_BY_VARIABLE_ARITY = new ApplicabilityTest() {
+ @Override
+ boolean isApplicable(final MethodType callSiteType, final SingleDynamicMethod method) {
+ if(!method.isVarArgs()) {
+ return false;
+ }
+ final MethodType methodType = method.getMethodType();
+ final int methodArity = methodType.parameterCount();
+ final int fixArity = methodArity - 1;
+ final int callSiteArity = callSiteType.parameterCount();
+ if(fixArity > callSiteArity) {
+ return false;
+ }
+ // 0th arg is receiver; it doesn't matter for overload
+ // resolution.
+ for(int i = 1; i < fixArity; ++i) {
+ if(!TypeUtilities.isMethodInvocationConvertible(callSiteType.parameterType(i),
+ methodType.parameterType(i))) {
+ return false;
+ }
+ }
+ final Class varArgType = methodType.parameterType(fixArity).getComponentType();
+ for(int i = fixArity; i < callSiteArity; ++i) {
+ if(!TypeUtilities.isMethodInvocationConvertible(callSiteType.parameterType(i), varArgType)) {
+ return false;
+ }
+ }
+ return true;
+ }
+ };
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/BeanIntrospector.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/BeanIntrospector.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.lang.invoke.MethodHandle;
+import java.util.Collections;
+import java.util.Map;
+
+class BeanIntrospector extends FacetIntrospector {
+ BeanIntrospector(final Class clazz) {
+ super(clazz, true);
+ }
+
+ @Override
+ Map getInnerClassGetters() {
+ return Collections.emptyMap(); // NOTE: non-static inner classes are also on StaticClassIntrospector.
+ }
+
+ @Override
+ MethodHandle editMethodHandle(final MethodHandle mh) {
+ return mh;
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/BeanLinker.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/BeanLinker.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,525 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import java.lang.reflect.Array;
+import java.util.Collection;
+import java.util.List;
+import java.util.Map;
+import jdk.dynalink.CallSiteDescriptor;
+import jdk.dynalink.Operation;
+import jdk.dynalink.StandardOperation;
+import jdk.dynalink.beans.GuardedInvocationComponent.ValidationType;
+import jdk.dynalink.linker.GuardedInvocation;
+import jdk.dynalink.linker.LinkerServices;
+import jdk.dynalink.linker.TypeBasedGuardingDynamicLinker;
+import jdk.dynalink.linker.support.Guards;
+import jdk.dynalink.linker.support.Lookup;
+import jdk.dynalink.linker.support.TypeUtilities;
+
+/**
+ * A class that provides linking capabilities for a single POJO class. Normally not used directly, but managed by
+ * {@link BeansLinker}.
+ */
+class BeanLinker extends AbstractJavaLinker implements TypeBasedGuardingDynamicLinker {
+ BeanLinker(final Class clazz) {
+ super(clazz, Guards.getClassGuard(clazz), Guards.getInstanceOfGuard(clazz));
+ if(clazz.isArray()) {
+ // Some languages won't have a notion of manipulating collections. Exposing "length" on arrays as an
+ // explicit property is beneficial for them.
+ // REVISIT: is it maybe a code smell that StandardOperation.GET_LENGTH is not needed?
+ setPropertyGetter("length", GET_ARRAY_LENGTH, ValidationType.IS_ARRAY);
+ } else if(List.class.isAssignableFrom(clazz)) {
+ setPropertyGetter("length", GET_COLLECTION_LENGTH, ValidationType.INSTANCE_OF);
+ }
+ }
+
+ @Override
+ public boolean canLinkType(final Class type) {
+ return type == clazz;
+ }
+
+ @Override
+ FacetIntrospector createFacetIntrospector() {
+ return new BeanIntrospector(clazz);
+ }
+
+ @Override
+ protected GuardedInvocationComponent getGuardedInvocationComponent(final CallSiteDescriptor callSiteDescriptor,
+ final LinkerServices linkerServices, final List operations, final Object name) throws Exception {
+ final GuardedInvocationComponent superGic = super.getGuardedInvocationComponent(callSiteDescriptor,
+ linkerServices, operations, name);
+ if(superGic != null) {
+ return superGic;
+ }
+ if(operations.isEmpty()) {
+ return null;
+ }
+ final Operation op = operations.get(0);
+ if(op == StandardOperation.GET_ELEMENT) {
+ return getElementGetter(callSiteDescriptor, linkerServices, pop(operations), name);
+ }
+ if(op == StandardOperation.SET_ELEMENT) {
+ return getElementSetter(callSiteDescriptor, linkerServices, pop(operations), name);
+ }
+ if(op == StandardOperation.GET_LENGTH) {
+ return getLengthGetter(callSiteDescriptor);
+ }
+ return null;
+ }
+
+ @Override
+ SingleDynamicMethod getConstructorMethod(final String signature) {
+ return null;
+ }
+
+ private static final MethodHandle GET_LIST_ELEMENT = Lookup.PUBLIC.findVirtual(List.class, "get",
+ MethodType.methodType(Object.class, int.class));
+
+ private static final MethodHandle GET_MAP_ELEMENT = Lookup.PUBLIC.findVirtual(Map.class, "get",
+ MethodType.methodType(Object.class, Object.class));
+
+ private static final MethodHandle LIST_GUARD = Guards.getInstanceOfGuard(List.class);
+ private static final MethodHandle MAP_GUARD = Guards.getInstanceOfGuard(Map.class);
+
+ private enum CollectionType {
+ ARRAY, LIST, MAP
+ };
+
+ private GuardedInvocationComponent getElementGetter(final CallSiteDescriptor callSiteDescriptor,
+ final LinkerServices linkerServices, final List operations, final Object name) throws Exception {
+ final MethodType callSiteType = callSiteDescriptor.getMethodType();
+ final Class declaredType = callSiteType.parameterType(0);
+ final GuardedInvocationComponent nextComponent = getGuardedInvocationComponent(callSiteDescriptor,
+ linkerServices, operations, name);
+
+ // If declared type of receiver at the call site is already an array, a list or map, bind without guard. Thing
+ // is, it'd be quite stupid of a call site creator to go though invokedynamic when it knows in advance they're
+ // dealing with an array, or a list or map, but hey...
+ // Note that for arrays and lists, using LinkerServices.asType() will ensure that any language specific linkers
+ // in use will get a chance to perform any (if there's any) implicit conversion to integer for the indices.
+ final GuardedInvocationComponent gic;
+ final CollectionType collectionType;
+ if(declaredType.isArray()) {
+ gic = createInternalFilteredGuardedInvocationComponent(MethodHandles.arrayElementGetter(declaredType), linkerServices);
+ collectionType = CollectionType.ARRAY;
+ } else if(List.class.isAssignableFrom(declaredType)) {
+ gic = createInternalFilteredGuardedInvocationComponent(GET_LIST_ELEMENT, linkerServices);
+ collectionType = CollectionType.LIST;
+ } else if(Map.class.isAssignableFrom(declaredType)) {
+ gic = createInternalFilteredGuardedInvocationComponent(GET_MAP_ELEMENT, linkerServices);
+ collectionType = CollectionType.MAP;
+ } else if(clazz.isArray()) {
+ gic = getClassGuardedInvocationComponent(linkerServices.filterInternalObjects(MethodHandles.arrayElementGetter(clazz)), callSiteType);
+ collectionType = CollectionType.ARRAY;
+ } else if(List.class.isAssignableFrom(clazz)) {
+ gic = createInternalFilteredGuardedInvocationComponent(GET_LIST_ELEMENT, Guards.asType(LIST_GUARD, callSiteType), List.class, ValidationType.INSTANCE_OF,
+ linkerServices);
+ collectionType = CollectionType.LIST;
+ } else if(Map.class.isAssignableFrom(clazz)) {
+ gic = createInternalFilteredGuardedInvocationComponent(GET_MAP_ELEMENT, Guards.asType(MAP_GUARD, callSiteType), Map.class, ValidationType.INSTANCE_OF,
+ linkerServices);
+ collectionType = CollectionType.MAP;
+ } else {
+ // Can't retrieve elements for objects that are neither arrays, nor list, nor maps.
+ return nextComponent;
+ }
+
+ // Convert the key to a number if we're working with a list or array
+ final Object typedName;
+ if(collectionType != CollectionType.MAP && name != null) {
+ typedName = convertKeyToInteger(name, linkerServices);
+ if(typedName == null) {
+ // key is not numeric, it can never succeed
+ return nextComponent;
+ }
+ } else {
+ typedName = name;
+ }
+
+ final GuardedInvocation gi = gic.getGuardedInvocation();
+ final Binder binder = new Binder(linkerServices, callSiteType, typedName);
+ final MethodHandle invocation = gi.getInvocation();
+
+ if(nextComponent == null) {
+ return gic.replaceInvocation(binder.bind(invocation));
+ }
+
+ final MethodHandle checkGuard;
+ switch(collectionType) {
+ case LIST:
+ checkGuard = convertArgToInt(RANGE_CHECK_LIST, linkerServices, callSiteDescriptor);
+ break;
+ case MAP:
+ // TODO: A more complex solution could be devised for maps, one where we do a get() first, and fold it
+ // into a GWT that tests if it returned null, and if it did, do another GWT with containsKey()
+ // that returns constant null (on true), or falls back to next component (on false)
+ checkGuard = linkerServices.filterInternalObjects(CONTAINS_MAP);
+ break;
+ case ARRAY:
+ checkGuard = convertArgToInt(RANGE_CHECK_ARRAY, linkerServices, callSiteDescriptor);
+ break;
+ default:
+ throw new AssertionError();
+ }
+ final MethodPair matchedInvocations = matchReturnTypes(binder.bind(invocation),
+ nextComponent.getGuardedInvocation().getInvocation());
+ return nextComponent.compose(matchedInvocations.guardWithTest(binder.bindTest(checkGuard)), gi.getGuard(),
+ gic.getValidatorClass(), gic.getValidationType());
+ }
+
+ private static GuardedInvocationComponent createInternalFilteredGuardedInvocationComponent(
+ final MethodHandle invocation, final LinkerServices linkerServices) {
+ return new GuardedInvocationComponent(linkerServices.filterInternalObjects(invocation));
+ }
+
+ private static GuardedInvocationComponent createInternalFilteredGuardedInvocationComponent(
+ final MethodHandle invocation, final MethodHandle guard, final Class validatorClass,
+ final ValidationType validationType, final LinkerServices linkerServices) {
+ return new GuardedInvocationComponent(linkerServices.filterInternalObjects(invocation), guard,
+ validatorClass, validationType);
+ }
+
+ private static Integer convertKeyToInteger(final Object fixedKey, final LinkerServices linkerServices) throws Exception {
+ if (fixedKey instanceof Integer) {
+ return (Integer)fixedKey;
+ }
+
+ final Number n;
+ if (fixedKey instanceof Number) {
+ n = (Number)fixedKey;
+ } else {
+ final Class keyClass = fixedKey.getClass();
+ if(linkerServices.canConvert(keyClass, Number.class)) {
+ final Object val;
+ try {
+ val = linkerServices.getTypeConverter(keyClass, Number.class).invoke(fixedKey);
+ } catch(Exception|Error e) {
+ throw e;
+ } catch(final Throwable t) {
+ throw new RuntimeException(t);
+ }
+ if(!(val instanceof Number)) {
+ return null; // not a number
+ }
+ n = (Number)val;
+ } else if (fixedKey instanceof String){
+ try {
+ return Integer.valueOf((String)fixedKey);
+ } catch(final NumberFormatException e) {
+ // key is not a number
+ return null;
+ }
+ } else {
+ return null;
+ }
+ }
+
+ if(n instanceof Integer) {
+ return (Integer)n;
+ }
+ final int intIndex = n.intValue();
+ final double doubleValue = n.doubleValue();
+ if(intIndex != doubleValue && !Double.isInfinite(doubleValue)) { // let infinites trigger IOOBE
+ return null; // not an exact integer
+ }
+ return intIndex;
+ }
+
+ private static MethodHandle convertArgToInt(final MethodHandle mh, final LinkerServices ls, final CallSiteDescriptor desc) {
+ final Class sourceType = desc.getMethodType().parameterType(1);
+ if(TypeUtilities.isMethodInvocationConvertible(sourceType, Number.class)) {
+ return mh;
+ } else if(ls.canConvert(sourceType, Number.class)) {
+ final MethodHandle converter = ls.getTypeConverter(sourceType, Number.class);
+ return MethodHandles.filterArguments(mh, 1, converter.asType(converter.type().changeReturnType(
+ mh.type().parameterType(1))));
+ }
+ return mh;
+ }
+
+ /**
+ * Contains methods to adapt an item getter/setter method handle to the requested type, optionally binding it to a
+ * fixed key first.
+ */
+ private static class Binder {
+ private final LinkerServices linkerServices;
+ private final MethodType methodType;
+ private final Object fixedKey;
+
+ Binder(final LinkerServices linkerServices, final MethodType methodType, final Object fixedKey) {
+ this.linkerServices = linkerServices;
+ this.methodType = fixedKey == null ? methodType : methodType.insertParameterTypes(1, fixedKey.getClass());
+ this.fixedKey = fixedKey;
+ }
+
+ /*private*/ MethodHandle bind(final MethodHandle handle) {
+ return bindToFixedKey(linkerServices.asTypeLosslessReturn(handle, methodType));
+ }
+
+ /*private*/ MethodHandle bindTest(final MethodHandle handle) {
+ return bindToFixedKey(Guards.asType(handle, methodType));
+ }
+
+ private MethodHandle bindToFixedKey(final MethodHandle handle) {
+ return fixedKey == null ? handle : MethodHandles.insertArguments(handle, 1, fixedKey);
+ }
+ }
+
+ private static final MethodHandle RANGE_CHECK_ARRAY = findRangeCheck(Object.class);
+ private static final MethodHandle RANGE_CHECK_LIST = findRangeCheck(List.class);
+ private static final MethodHandle CONTAINS_MAP = Lookup.PUBLIC.findVirtual(Map.class, "containsKey",
+ MethodType.methodType(boolean.class, Object.class));
+
+ private static MethodHandle findRangeCheck(final Class collectionType) {
+ return Lookup.findOwnStatic(MethodHandles.lookup(), "rangeCheck", boolean.class, collectionType, Object.class);
+ }
+
+ @SuppressWarnings("unused")
+ private static boolean rangeCheck(final Object array, final Object index) {
+ if(!(index instanceof Number)) {
+ return false;
+ }
+ final Number n = (Number)index;
+ final int intIndex = n.intValue();
+ final double doubleValue = n.doubleValue();
+ if(intIndex != doubleValue && !Double.isInfinite(doubleValue)) { // let infinite trigger IOOBE
+ return false;
+ }
+ if(0 <= intIndex && intIndex < Array.getLength(array)) {
+ return true;
+ }
+ throw new ArrayIndexOutOfBoundsException("Array index out of range: " + n);
+ }
+
+ @SuppressWarnings("unused")
+ private static boolean rangeCheck(final List list, final Object index) {
+ if(!(index instanceof Number)) {
+ return false;
+ }
+ final Number n = (Number)index;
+ final int intIndex = n.intValue();
+ final double doubleValue = n.doubleValue();
+ if(intIndex != doubleValue && !Double.isInfinite(doubleValue)) { // let infinite trigger IOOBE
+ return false;
+ }
+ if(0 <= intIndex && intIndex < list.size()) {
+ return true;
+ }
+ throw new IndexOutOfBoundsException("Index: " + n + ", Size: " + list.size());
+ }
+
+ private static final MethodHandle SET_LIST_ELEMENT = Lookup.PUBLIC.findVirtual(List.class, "set",
+ MethodType.methodType(Object.class, int.class, Object.class));
+
+ private static final MethodHandle PUT_MAP_ELEMENT = Lookup.PUBLIC.findVirtual(Map.class, "put",
+ MethodType.methodType(Object.class, Object.class, Object.class));
+
+ private GuardedInvocationComponent getElementSetter(final CallSiteDescriptor callSiteDescriptor,
+ final LinkerServices linkerServices, final List operations, final Object name) throws Exception {
+ final MethodType callSiteType = callSiteDescriptor.getMethodType();
+ final Class declaredType = callSiteType.parameterType(0);
+
+ final GuardedInvocationComponent gic;
+ // If declared type of receiver at the call site is already an array, a list or map, bind without guard. Thing
+ // is, it'd be quite stupid of a call site creator to go though invokedynamic when it knows in advance they're
+ // dealing with an array, or a list or map, but hey...
+ // Note that for arrays and lists, using LinkerServices.asType() will ensure that any language specific linkers
+ // in use will get a chance to perform any (if there's any) implicit conversion to integer for the indices.
+ final CollectionType collectionType;
+ if(declaredType.isArray()) {
+ gic = createInternalFilteredGuardedInvocationComponent(MethodHandles.arrayElementSetter(declaredType), linkerServices);
+ collectionType = CollectionType.ARRAY;
+ } else if(List.class.isAssignableFrom(declaredType)) {
+ gic = createInternalFilteredGuardedInvocationComponent(SET_LIST_ELEMENT, linkerServices);
+ collectionType = CollectionType.LIST;
+ } else if(Map.class.isAssignableFrom(declaredType)) {
+ gic = createInternalFilteredGuardedInvocationComponent(PUT_MAP_ELEMENT, linkerServices);
+ collectionType = CollectionType.MAP;
+ } else if(clazz.isArray()) {
+ gic = getClassGuardedInvocationComponent(linkerServices.filterInternalObjects(
+ MethodHandles.arrayElementSetter(clazz)), callSiteType);
+ collectionType = CollectionType.ARRAY;
+ } else if(List.class.isAssignableFrom(clazz)) {
+ gic = createInternalFilteredGuardedInvocationComponent(SET_LIST_ELEMENT, Guards.asType(LIST_GUARD, callSiteType), List.class, ValidationType.INSTANCE_OF,
+ linkerServices);
+ collectionType = CollectionType.LIST;
+ } else if(Map.class.isAssignableFrom(clazz)) {
+ gic = createInternalFilteredGuardedInvocationComponent(PUT_MAP_ELEMENT, Guards.asType(MAP_GUARD, callSiteType),
+ Map.class, ValidationType.INSTANCE_OF, linkerServices);
+ collectionType = CollectionType.MAP;
+ } else {
+ // Can't set elements for objects that are neither arrays, nor list, nor maps.
+ gic = null;
+ collectionType = null;
+ }
+
+ // In contrast to, say, getElementGetter, we only compute the nextComponent if the target object is not a map,
+ // as maps will always succeed in setting the element and will never need to fall back to the next component
+ // operation.
+ final GuardedInvocationComponent nextComponent = collectionType == CollectionType.MAP ? null : getGuardedInvocationComponent(
+ callSiteDescriptor, linkerServices, operations, name);
+ if(gic == null) {
+ return nextComponent;
+ }
+
+ // Convert the key to a number if we're working with a list or array
+ final Object typedName;
+ if(collectionType != CollectionType.MAP && name != null) {
+ typedName = convertKeyToInteger(name, linkerServices);
+ if(typedName == null) {
+ // key is not numeric, it can never succeed
+ return nextComponent;
+ }
+ } else {
+ typedName = name;
+ }
+
+ final GuardedInvocation gi = gic.getGuardedInvocation();
+ final Binder binder = new Binder(linkerServices, callSiteType, typedName);
+ final MethodHandle invocation = gi.getInvocation();
+
+ if(nextComponent == null) {
+ return gic.replaceInvocation(binder.bind(invocation));
+ }
+
+ assert collectionType == CollectionType.LIST || collectionType == CollectionType.ARRAY;
+ final MethodHandle checkGuard = convertArgToInt(collectionType == CollectionType.LIST ? RANGE_CHECK_LIST :
+ RANGE_CHECK_ARRAY, linkerServices, callSiteDescriptor);
+ final MethodPair matchedInvocations = matchReturnTypes(binder.bind(invocation),
+ nextComponent.getGuardedInvocation().getInvocation());
+ return nextComponent.compose(matchedInvocations.guardWithTest(binder.bindTest(checkGuard)), gi.getGuard(),
+ gic.getValidatorClass(), gic.getValidationType());
+ }
+
+ private static final MethodHandle GET_ARRAY_LENGTH = Lookup.PUBLIC.findStatic(Array.class, "getLength",
+ MethodType.methodType(int.class, Object.class));
+
+ private static final MethodHandle GET_COLLECTION_LENGTH = Lookup.PUBLIC.findVirtual(Collection.class, "size",
+ MethodType.methodType(int.class));
+
+ private static final MethodHandle GET_MAP_LENGTH = Lookup.PUBLIC.findVirtual(Map.class, "size",
+ MethodType.methodType(int.class));
+
+ private static final MethodHandle COLLECTION_GUARD = Guards.getInstanceOfGuard(Collection.class);
+
+ private GuardedInvocationComponent getLengthGetter(final CallSiteDescriptor callSiteDescriptor) {
+ assertParameterCount(callSiteDescriptor, 1);
+ final MethodType callSiteType = callSiteDescriptor.getMethodType();
+ final Class declaredType = callSiteType.parameterType(0);
+ // If declared type of receiver at the call site is already an array, collection, or map, bind without guard.
+ // Thing is, it'd be quite stupid of a call site creator to go though invokedynamic when it knows in advance
+ // they're dealing with an array, collection, or map, but hey...
+ if(declaredType.isArray()) {
+ return new GuardedInvocationComponent(GET_ARRAY_LENGTH.asType(callSiteType));
+ } else if(Collection.class.isAssignableFrom(declaredType)) {
+ return new GuardedInvocationComponent(GET_COLLECTION_LENGTH.asType(callSiteType));
+ } else if(Map.class.isAssignableFrom(declaredType)) {
+ return new GuardedInvocationComponent(GET_MAP_LENGTH.asType(callSiteType));
+ }
+
+ // Otherwise, create a binding based on the actual type of the argument with an appropriate guard.
+ if(clazz.isArray()) {
+ return new GuardedInvocationComponent(GET_ARRAY_LENGTH.asType(callSiteType), Guards.isArray(0,
+ callSiteType), ValidationType.IS_ARRAY);
+ } if(Collection.class.isAssignableFrom(clazz)) {
+ return new GuardedInvocationComponent(GET_COLLECTION_LENGTH.asType(callSiteType), Guards.asType(
+ COLLECTION_GUARD, callSiteType), Collection.class, ValidationType.INSTANCE_OF);
+ } if(Map.class.isAssignableFrom(clazz)) {
+ return new GuardedInvocationComponent(GET_MAP_LENGTH.asType(callSiteType), Guards.asType(MAP_GUARD,
+ callSiteType), Map.class, ValidationType.INSTANCE_OF);
+ }
+ // Can't retrieve length for objects that are neither arrays, nor collections, nor maps.
+ return null;
+ }
+
+ private static void assertParameterCount(final CallSiteDescriptor descriptor, final int paramCount) {
+ if(descriptor.getMethodType().parameterCount() != paramCount) {
+ throw new BootstrapMethodError(descriptor.getOperation() + " must have exactly " + paramCount + " parameters.");
+ }
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/BeansLinker.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/BeansLinker.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,307 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.lang.invoke.MethodHandles.Lookup;
+import java.util.Collections;
+import java.util.Set;
+import jdk.dynalink.DynamicLinkerFactory;
+import jdk.dynalink.StandardOperation;
+import jdk.dynalink.linker.GuardedInvocation;
+import jdk.dynalink.linker.GuardingDynamicLinker;
+import jdk.dynalink.linker.LinkRequest;
+import jdk.dynalink.linker.LinkerServices;
+import jdk.dynalink.linker.TypeBasedGuardingDynamicLinker;
+
+/**
+ * A linker for ordinary Java objects. Normally used as the ultimate fallback
+ * linker by the {@link DynamicLinkerFactory} so it is given the chance to link
+ * calls to all objects that no other linker recognized. Specifically, this
+ * linker will:
+ *
+ *
expose all public methods of form {@code setXxx()}, {@code getXxx()},
+ * and {@code isXxx()} as property setters and getters for
+ * {@link StandardOperation#SET_PROPERTY} and {@link StandardOperation#GET_PROPERTY}
+ * operations;
+ *
expose all public methods for invocation through
+ * {@link StandardOperation#CALL_METHOD} operation;
+ *
expose all public methods for retrieval for
+ * {@link StandardOperation#GET_METHOD} operation; the methods thus retrieved
+ * can then be invoked using {@link StandardOperation#CALL}.
+ *
expose all public fields as properties, unless there are getters or
+ * setters for the properties of the same name;
+ *
expose {@link StandardOperation#GET_LENGTH},
+ * {@link StandardOperation#GET_ELEMENT} and {@link StandardOperation#SET_ELEMENT}
+ * on native Java arrays, as well as {@link java.util.List} and
+ * {@link java.util.Map} objects; ({@link StandardOperation#GET_LENGTH} works on
+ * any {@link java.util.Collection});
+ *
expose a virtual property named {@code length} on Java arrays;
+ *
expose {@link StandardOperation#NEW} on instances of {@link StaticClass}
+ * as calls to constructors, including those static class objects that represent
+ * Java arrays (their constructors take a single {@code int} parameter
+ * representing the length of the array to create);
+ *
expose static methods, fields, and properties of classes in a similar
+ * manner to how instance method, fields, and properties are exposed, on
+ * {@link StaticClass} objects.
+ *
expose a virtual property named {@code static} on instances of
+ * {@link java.lang.Class} to access their {@link StaticClass}.
+ *
+ *
Overloaded method resolution is performed automatically
+ * for property setters, methods, and constructors. Additionally, manual
+ * overloaded method selection is supported by having a call site specify a name
+ * for a method that contains an explicit signature, i.e.
+ * {@code NamedMethod(GET_METHOD, "parseInt(String,int)")}. You can use
+ * non-qualified class names in such signatures regardless of those classes'
+ * packages, they will match any class with the same non-qualified name. You
+ * only have to use a fully qualified class name in case non-qualified class
+ * names would cause selection ambiguity (that is extremely rare). Overloaded
+ * resolution for constructors is not automatic as there is no logical place to
+ * attach that functionality to but if a language wishes to provide this
+ * functionality, it can use {@link #getConstructorMethod(Class, String)} as a
+ * useful building block for it.
+ *
Variable argument invocation is handled for both methods
+ * and constructors.
+ *
Caller sensitive methods can be linked as long as they
+ * are otherwise public and link requests have call site descriptors carrying
+ * full-strength {@link Lookup} objects and not weakened lookups or the public
+ * lookup.
+ *
The class also exposes various static methods for discovery of available
+ * property and method names on classes and class instances, as well as access
+ * to per-class linkers using the {@link #getLinkerForClass(Class)}
+ * method.
+ */
+public class BeansLinker implements GuardingDynamicLinker {
+ private static final ClassValue linkers = new ClassValue() {
+ @Override
+ protected TypeBasedGuardingDynamicLinker computeValue(final Class clazz) {
+ // If ClassValue.put() were public, we could just pre-populate with these known mappings...
+ return
+ clazz == Class.class ? new ClassLinker() :
+ clazz == StaticClass.class ? new StaticClassLinker() :
+ DynamicMethod.class.isAssignableFrom(clazz) ? new DynamicMethodLinker() :
+ new BeanLinker(clazz);
+ }
+ };
+
+ /**
+ * Creates a new beans linker.
+ */
+ public BeansLinker() {
+ }
+
+ /**
+ * Returns a bean linker for a particular single class. Useful when you need
+ * to override or extend the behavior of linking for some classes in your
+ * language runtime's linker, but still want to delegate to the default
+ * behavior in some cases.
+ * @param clazz the class
+ * @return a bean linker for that class
+ */
+ public static TypeBasedGuardingDynamicLinker getLinkerForClass(final Class clazz) {
+ return linkers.get(clazz);
+ }
+
+ /**
+ * Returns true if the object is a Java dynamic method (e.g., one
+ * obtained through a {@code GET_METHOD} operation on a Java object or
+ * {@link StaticClass} or through
+ * {@link #getConstructorMethod(Class, String)}.
+ *
+ * @param obj the object we want to test for being a Java dynamic method.
+ * @return true if it is a dynamic method, false otherwise.
+ */
+ public static boolean isDynamicMethod(final Object obj) {
+ return obj instanceof DynamicMethod;
+ }
+
+ /**
+ * Returns true if the object is a Java constructor (obtained through
+ * {@link #getConstructorMethod(Class, String)}}.
+ *
+ * @param obj the object we want to test for being a Java constructor.
+ * @return true if it is a constructor, false otherwise.
+ */
+ public static boolean isDynamicConstructor(final Object obj) {
+ return obj instanceof DynamicMethod && ((DynamicMethod)obj).isConstructor();
+ }
+
+ /**
+ * Return the dynamic method of constructor of the given class and the given
+ * signature. This method is useful for exposing a functionality for
+ * selecting an overloaded constructor based on an explicit signature, as
+ * this functionality is not otherwise exposed by Dynalink as
+ * {@link StaticClass} objects act as overloaded constructors without
+ * explicit signature selection. Example usage would be:
+ * {@code getConstructorMethod(java.awt.Color.class, "int, int, int")}.
+ * @param clazz the class
+ * @param signature full signature of the constructor. Note how you can use
+ * names of primitive types, array names with normal Java notation (e.g.
+ * {@code "int[]"}), and normally you can even use unqualified class names
+ * (e.g. {@code "String, List"} instead of
+ * {@code "java.lang.String, java.util.List"} as long as they don't cause
+ * ambiguity in the specific parameter position.
+ * @return dynamic method for the constructor or null if no constructor with
+ * the specified signature exists.
+ */
+ public static Object getConstructorMethod(final Class clazz, final String signature) {
+ return StaticClassLinker.getConstructorMethod(clazz, signature);
+ }
+
+ /**
+ * Returns a set of names of all readable instance properties of a class.
+ * @param clazz the class
+ * @return a set of names of all readable instance properties of a class.
+ */
+ public static Set getReadableInstancePropertyNames(final Class clazz) {
+ final TypeBasedGuardingDynamicLinker linker = getLinkerForClass(clazz);
+ if(linker instanceof BeanLinker) {
+ return ((BeanLinker)linker).getReadablePropertyNames();
+ }
+ return Collections.emptySet();
+ }
+
+ /**
+ * Returns a set of names of all writable instance properties of a class.
+ * @param clazz the class
+ * @return a set of names of all writable instance properties of a class.
+ */
+ public static Set getWritableInstancePropertyNames(final Class clazz) {
+ final TypeBasedGuardingDynamicLinker linker = getLinkerForClass(clazz);
+ if(linker instanceof BeanLinker) {
+ return ((BeanLinker)linker).getWritablePropertyNames();
+ }
+ return Collections.emptySet();
+ }
+
+ /**
+ * Returns a set of names of all instance methods of a class.
+ * @param clazz the class
+ * @return a set of names of all instance methods of a class.
+ */
+ public static Set getInstanceMethodNames(final Class clazz) {
+ final TypeBasedGuardingDynamicLinker linker = getLinkerForClass(clazz);
+ if(linker instanceof BeanLinker) {
+ return ((BeanLinker)linker).getMethodNames();
+ }
+ return Collections.emptySet();
+ }
+
+ /**
+ * Returns a set of names of all readable static properties of a class.
+ * @param clazz the class
+ * @return a set of names of all readable static properties of a class.
+ */
+ public static Set getReadableStaticPropertyNames(final Class clazz) {
+ return StaticClassLinker.getReadableStaticPropertyNames(clazz);
+ }
+
+ /**
+ * Returns a set of names of all writable static properties of a class.
+ * @param clazz the class
+ * @return a set of names of all writable static properties of a class.
+ */
+ public static Set getWritableStaticPropertyNames(final Class clazz) {
+ return StaticClassLinker.getWritableStaticPropertyNames(clazz);
+ }
+
+ /**
+ * Returns a set of names of all static methods of a class.
+ * @param clazz the class
+ * @return a set of names of all static methods of a class.
+ */
+ public static Set getStaticMethodNames(final Class clazz) {
+ return StaticClassLinker.getStaticMethodNames(clazz);
+ }
+
+ @Override
+ public GuardedInvocation getGuardedInvocation(final LinkRequest request, final LinkerServices linkerServices)
+ throws Exception {
+ final Object receiver = request.getReceiver();
+ if(receiver == null) {
+ // Can't operate on null
+ return null;
+ }
+ return getLinkerForClass(receiver.getClass()).getGuardedInvocation(request, linkerServices);
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/CallerSensitiveDynamicMethod.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/CallerSensitiveDynamicMethod.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,175 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import java.lang.reflect.AccessibleObject;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Member;
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import java.security.AccessControlContext;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import jdk.dynalink.CallSiteDescriptor;
+import jdk.dynalink.internal.AccessControlContextFactory;
+import jdk.dynalink.linker.support.Lookup;
+
+/**
+ * A dynamic method bound to exactly one Java method or constructor that is caller sensitive. Since the target method is
+ * caller sensitive, it doesn't cache a method handle but rather uses the passed lookup object in
+ * {@link #getTarget(CallSiteDescriptor)} to unreflect a method handle from the reflective member on
+ * every request.
+ */
+class CallerSensitiveDynamicMethod extends SingleDynamicMethod {
+ private static final AccessControlContext GET_LOOKUP_CONTEXT =
+ AccessControlContextFactory.createAccessControlContext(
+ CallSiteDescriptor.GET_LOOKUP_PERMISSION_NAME);
+
+ // Typed as "AccessibleObject" as it can be either a method or a constructor.
+ // If we were Java8-only, we could use java.lang.reflect.Executable
+ private final AccessibleObject target;
+ private final MethodType type;
+
+ CallerSensitiveDynamicMethod(final AccessibleObject target) {
+ super(getName(target));
+ this.target = target;
+ this.type = getMethodType(target);
+ }
+
+ private static String getName(final AccessibleObject target) {
+ final Member m = (Member)target;
+ final boolean constructor = m instanceof Constructor;
+ return getMethodNameWithSignature(getMethodType(target), constructor ? m.getName() :
+ getClassAndMethodName(m.getDeclaringClass(), m.getName()), !constructor);
+ }
+
+ @Override
+ MethodType getMethodType() {
+ return type;
+ }
+
+ private static MethodType getMethodType(final AccessibleObject ao) {
+ final boolean isMethod = ao instanceof Method;
+ final Class rtype = isMethod ? ((Method)ao).getReturnType() : ((Constructor)ao).getDeclaringClass();
+ final Class[] ptypes = isMethod ? ((Method)ao).getParameterTypes() : ((Constructor)ao).getParameterTypes();
+ final MethodType type = MethodType.methodType(rtype, ptypes);
+ final Member m = (Member)ao;
+ return type.insertParameterTypes(0,
+ isMethod ?
+ Modifier.isStatic(m.getModifiers()) ?
+ Object.class :
+ m.getDeclaringClass() :
+ StaticClass.class);
+ }
+
+ @Override
+ boolean isVarArgs() {
+ return target instanceof Method ? ((Method)target).isVarArgs() : ((Constructor)target).isVarArgs();
+ }
+
+ @Override
+ MethodHandle getTarget(final CallSiteDescriptor desc) {
+ final MethodHandles.Lookup lookup = AccessController.doPrivileged(
+ (PrivilegedAction)()->desc.getLookup(),
+ GET_LOOKUP_CONTEXT);
+
+ if(target instanceof Method) {
+ final MethodHandle mh = Lookup.unreflect(lookup, (Method)target);
+ if(Modifier.isStatic(((Member)target).getModifiers())) {
+ return StaticClassIntrospector.editStaticMethodHandle(mh);
+ }
+ return mh;
+ }
+ return StaticClassIntrospector.editConstructorMethodHandle(Lookup.unreflectConstructor(lookup,
+ (Constructor)target));
+ }
+
+ @Override
+ boolean isConstructor() {
+ return target instanceof Constructor;
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/CheckRestrictedPackage.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/CheckRestrictedPackage.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,134 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.lang.reflect.Modifier;
+import java.security.AccessControlContext;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import jdk.dynalink.internal.AccessControlContextFactory;
+
+/**
+ * A utility class to check whether a given class is in a package with restricted access e.g. "sun.*" etc.
+ */
+class CheckRestrictedPackage {
+ private static final AccessControlContext NO_PERMISSIONS_CONTEXT =
+ AccessControlContextFactory.createAccessControlContext();
+
+ /**
+ * Returns true if the class is either not public, or it resides in a package with restricted access.
+ * @param clazz the class to test
+ * @return true if the class is either not public, or it resides in a package with restricted access.
+ */
+ static boolean isRestrictedClass(final Class clazz) {
+ if(!Modifier.isPublic(clazz.getModifiers())) {
+ // Non-public classes are always restricted
+ return true;
+ }
+ final SecurityManager sm = System.getSecurityManager();
+ if(sm == null) {
+ // No further restrictions if we don't have a security manager
+ return false;
+ }
+ final String name = clazz.getName();
+ final int i = name.lastIndexOf('.');
+ if (i == -1) {
+ // Classes in default package are never restricted
+ return false;
+ }
+ // Do a package access check from within an access control context with no permissions
+ try {
+ AccessController.doPrivileged(new PrivilegedAction() {
+ @Override
+ public Void run() {
+ sm.checkPackageAccess(name.substring(0, i));
+ return null;
+ }
+ }, NO_PERMISSIONS_CONTEXT);
+ } catch(final SecurityException e) {
+ return true;
+ }
+ return false;
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/ClassLinker.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/ClassLinker.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import jdk.dynalink.beans.GuardedInvocationComponent.ValidationType;
+import jdk.dynalink.linker.support.Lookup;
+
+/**
+ * A linker for java.lang.Class objects. Provides a synthetic property "static" that allows access to static fields and
+ * methods on the class (respecting property getter/setter conventions). Note that Class objects are not recognized by
+ * the Dynalink as constructors for the instances of the class, {@link StaticClass} is used for this purpose.
+ */
+class ClassLinker extends BeanLinker {
+
+ ClassLinker() {
+ super(Class.class);
+ // Map "classObject.static" to StaticClass.forClass(classObject). Can use EXACT_CLASS since class Class is final.
+ setPropertyGetter("static", FOR_CLASS, ValidationType.EXACT_CLASS);
+ }
+
+ private static final MethodHandle FOR_CLASS = new Lookup(MethodHandles.lookup()).findStatic(StaticClass.class,
+ "forClass", MethodType.methodType(StaticClass.class, Class.class));
+
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/ClassString.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/ClassString.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,225 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodType;
+import java.security.AccessControlContext;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.util.LinkedList;
+import java.util.List;
+import jdk.dynalink.internal.AccessControlContextFactory;
+import jdk.dynalink.internal.InternalTypeUtilities;
+import jdk.dynalink.linker.LinkerServices;
+import jdk.dynalink.linker.support.TypeUtilities;
+
+/**
+ * Represents a sequence of {@link Class} objects, useful for representing method signatures. Provides value
+ * semantics for using them as map keys, as well as specificity calculations and applicability checks as per
+ * JLS.
+ */
+final class ClassString {
+ private static final AccessControlContext GET_CLASS_LOADER_CONTEXT =
+ AccessControlContextFactory.createAccessControlContext("getClassLoader");
+
+ /**
+ * An anonymous inner class used solely to represent the "type" of null values for method applicability checking.
+ */
+ static final Class NULL_CLASS = (new Object() { /* Intentionally empty */ }).getClass();
+
+ private final Class[] classes;
+ private int hashCode;
+
+ ClassString(final Class[] classes) {
+ this.classes = classes;
+ }
+
+ ClassString(final MethodType type) {
+ this(type.parameterArray());
+ }
+
+ @Override
+ public boolean equals(final Object other) {
+ if(!(other instanceof ClassString)) {
+ return false;
+ }
+ final Class[] otherClasses = ((ClassString)other).classes;
+ if(otherClasses.length != classes.length) {
+ return false;
+ }
+ for(int i = 0; i < otherClasses.length; ++i) {
+ if(otherClasses[i] != classes[i]) {
+ return false;
+ }
+ }
+ return true;
+ }
+
+ @Override
+ public int hashCode() {
+ if(hashCode == 0) {
+ int h = 0;
+ for(int i = 0; i < classes.length; ++i) {
+ h ^= classes[i].hashCode();
+ }
+ hashCode = h;
+ }
+ return hashCode;
+ }
+
+ boolean isVisibleFrom(final ClassLoader classLoader) {
+ return AccessController.doPrivileged(new PrivilegedAction() {
+ @Override
+ public Boolean run() {
+ for(final Class clazz: classes) {
+ if(!InternalTypeUtilities.canReferenceDirectly(classLoader, clazz.getClassLoader())) {
+ return false;
+ }
+ }
+ return true;
+ }
+ }, GET_CLASS_LOADER_CONTEXT);
+ }
+
+ List getMaximallySpecifics(final List methods, final LinkerServices linkerServices, final boolean varArg) {
+ return MaximallySpecific.getMaximallySpecificMethodHandles(getApplicables(methods, linkerServices, varArg),
+ varArg, classes, linkerServices);
+ }
+
+ /**
+ * Returns all methods that are applicable to actual parameter classes represented by this ClassString object.
+ */
+ LinkedList getApplicables(final List methods, final LinkerServices linkerServices, final boolean varArg) {
+ final LinkedList list = new LinkedList<>();
+ for(final MethodHandle member: methods) {
+ if(isApplicable(member, linkerServices, varArg)) {
+ list.add(member);
+ }
+ }
+ return list;
+ }
+
+ /**
+ * Returns true if the supplied method is applicable to actual parameter classes represented by this ClassString
+ * object.
+ *
+ */
+ private boolean isApplicable(final MethodHandle method, final LinkerServices linkerServices, final boolean varArg) {
+ final Class[] formalTypes = method.type().parameterArray();
+ final int cl = classes.length;
+ final int fl = formalTypes.length - (varArg ? 1 : 0);
+ if(varArg) {
+ if(cl < fl) {
+ return false;
+ }
+ } else {
+ if(cl != fl) {
+ return false;
+ }
+ }
+ // Starting from 1 as we ignore the receiver type
+ for(int i = 1; i < fl; ++i) {
+ if(!canConvert(linkerServices, classes[i], formalTypes[i])) {
+ return false;
+ }
+ }
+ if(varArg) {
+ final Class varArgType = formalTypes[fl].getComponentType();
+ for(int i = fl; i < cl; ++i) {
+ if(!canConvert(linkerServices, classes[i], varArgType)) {
+ return false;
+ }
+ }
+ }
+ return true;
+ }
+
+ private static boolean canConvert(final LinkerServices ls, final Class from, final Class to) {
+ if(from == NULL_CLASS) {
+ return !to.isPrimitive();
+ }
+ return ls == null ? TypeUtilities.isMethodInvocationConvertible(from, to) : ls.canConvert(from, to);
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/DynamicMethod.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/DynamicMethod.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,157 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.lang.invoke.MethodHandle;
+import jdk.dynalink.CallSiteDescriptor;
+import jdk.dynalink.linker.LinkerServices;
+
+/**
+ * Represents a single dynamic method. A "dynamic" method can be bound to a single Java method, or can be bound to all
+ * overloaded methods of the same name on a class. Getting an invocation of a dynamic method bound to multiple
+ * overloaded methods will perform overload resolution (actually, it will perform partial overloaded resolution at link
+ * time, but if that fails to identify exactly one target method, it will generate a method handle that will perform the
+ * rest of the overload resolution at invocation time for actual argument types).
+ */
+abstract class DynamicMethod {
+ private final String name;
+
+ DynamicMethod(final String name) {
+ this.name = name;
+ }
+
+ String getName() {
+ return name;
+ }
+
+ /**
+ * Creates an invocation for the dynamic method. If the method is overloaded, it will perform overloaded method
+ * resolution based on the specified method type. The resulting resolution can either identify a single method to be
+ * invoked among the overloads, or it can identify multiple ones. In the latter case, the returned method handle
+ * will perform further overload resolution among these candidates at every invocation. If the method to be invoked
+ * is a variable arguments (vararg) method, it will pack the extra arguments in an array before the invocation of
+ * the underlying method if it is not already done.
+ *
+ * @param callSiteDescriptor the descriptor of the call site
+ * @param linkerServices linker services. Used for language-specific type conversions.
+ * @return an invocation suitable for calling the method from the specified call site.
+ */
+ abstract MethodHandle getInvocation(CallSiteDescriptor callSiteDescriptor, LinkerServices linkerServices);
+
+ /**
+ * Returns a single dynamic method representing a single underlying Java method (possibly selected among several
+ * overloads) with formal parameter types exactly matching the passed signature.
+ * @param paramTypes the comma-separated list of requested parameter type names. The names will match both
+ * qualified and unqualified type names.
+ * @return a single dynamic method representing a single underlying Java method, or null if none of the Java methods
+ * behind this dynamic method exactly match the requested parameter types.
+ */
+ abstract SingleDynamicMethod getMethodForExactParamTypes(String paramTypes);
+
+ /**
+ * True if this dynamic method already contains a method with an identical signature as the passed in method.
+ * @param method the method to check
+ * @return true if it already contains an equivalent method.
+ */
+ abstract boolean contains(SingleDynamicMethod method);
+
+ static String getClassAndMethodName(final Class clazz, final String name) {
+ final String clazzName = clazz.getCanonicalName();
+ return (clazzName == null ? clazz.getName() : clazzName) + "." + name;
+ }
+
+ @Override
+ public String toString() {
+ return "[" + getClass().getName() + " " + getName() + "]";
+ }
+
+ /**
+ * True if this method happens to be a constructor method.
+ *
+ * @return true if this represents a constructor.
+ */
+ boolean isConstructor() {
+ return false;
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/DynamicMethodLinker.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/DynamicMethodLinker.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,143 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import jdk.dynalink.CallSiteDescriptor;
+import jdk.dynalink.NamedOperation;
+import jdk.dynalink.Operation;
+import jdk.dynalink.StandardOperation;
+import jdk.dynalink.linker.GuardedInvocation;
+import jdk.dynalink.linker.LinkRequest;
+import jdk.dynalink.linker.LinkerServices;
+import jdk.dynalink.linker.TypeBasedGuardingDynamicLinker;
+import jdk.dynalink.linker.support.Guards;
+
+/**
+ * Simple linker that implements the {@link StandardOperation#CALL} operation
+ * for {@link DynamicMethod} objects - the objects returned by
+ * {@link StandardOperation#GET_METHOD} through {@link AbstractJavaLinker}.
+ */
+class DynamicMethodLinker implements TypeBasedGuardingDynamicLinker {
+ @Override
+ public boolean canLinkType(final Class type) {
+ return DynamicMethod.class.isAssignableFrom(type);
+ }
+
+ @Override
+ public GuardedInvocation getGuardedInvocation(final LinkRequest linkRequest, final LinkerServices linkerServices) {
+ final Object receiver = linkRequest.getReceiver();
+ if(!(receiver instanceof DynamicMethod)) {
+ return null;
+ }
+ final DynamicMethod dynMethod = (DynamicMethod)receiver;
+ final boolean constructor = dynMethod.isConstructor();
+ final MethodHandle invocation;
+
+ final CallSiteDescriptor desc = linkRequest.getCallSiteDescriptor();
+ final Operation op = NamedOperation.getBaseOperation(desc.getOperation());
+ if (op == StandardOperation.CALL && !constructor) {
+ invocation = dynMethod.getInvocation(desc.changeMethodType(
+ desc.getMethodType().dropParameterTypes(0, 1)), linkerServices);
+ } else if (op == StandardOperation.NEW && constructor) {
+ final MethodHandle ctorInvocation = dynMethod.getInvocation(desc, linkerServices);
+ if(ctorInvocation == null) {
+ return null;
+ }
+
+ // Insert null for StaticClass parameter
+ invocation = MethodHandles.insertArguments(ctorInvocation, 0, (Object)null);
+ } else {
+ return null;
+ }
+
+ if (invocation != null) {
+ return new GuardedInvocation(MethodHandles.dropArguments(invocation, 0,
+ desc.getMethodType().parameterType(0)), Guards.getIdentityGuard(receiver));
+ }
+
+ return null;
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/FacetIntrospector.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/FacetIntrospector.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,184 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.reflect.Field;
+import java.lang.reflect.Member;
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Map;
+import jdk.dynalink.linker.support.Lookup;
+
+/**
+ * Base for classes that expose class field and method information to an {@link AbstractJavaLinker}. There are
+ * subclasses for instance (bean) and static facet of a class.
+ */
+abstract class FacetIntrospector {
+ private final Class clazz;
+ private final boolean instance;
+ private final boolean isRestricted;
+
+ protected final AccessibleMembersLookup membersLookup;
+
+ FacetIntrospector(final Class clazz, final boolean instance) {
+ this.clazz = clazz;
+ this.instance = instance;
+ isRestricted = CheckRestrictedPackage.isRestrictedClass(clazz);
+ membersLookup = new AccessibleMembersLookup(clazz, instance);
+ }
+
+ /**
+ * Returns getters for inner classes.
+ * @return getters for inner classes.
+ */
+ abstract Map getInnerClassGetters();
+
+ /**
+ * Returns the fields for the class facet.
+ * @return the fields for the class facet.
+ */
+ Collection getFields() {
+ if(isRestricted) {
+ // NOTE: we can't do anything here. Unlike with methods in AccessibleMethodsLookup, we can't just return
+ // the fields from a public superclass, because this class might define same-named fields which will shadow
+ // the superclass fields, and we have no way to know if they do, since we're denied invocation of
+ // getFields(). Therefore, the only correct course of action is to not expose any public fields from a class
+ // defined in a restricted package.
+ return Collections.emptySet();
+ }
+
+ final Field[] fields = clazz.getFields();
+ final Collection cfields = new ArrayList<>(fields.length);
+ for(final Field field: fields) {
+ final boolean isStatic = Modifier.isStatic(field.getModifiers());
+ if(isStatic && clazz != field.getDeclaringClass()) {
+ // ignore inherited static fields
+ continue;
+ }
+
+ if(instance != isStatic && isAccessible(field)) {
+ cfields.add(field);
+ }
+ }
+ return cfields;
+ }
+
+ boolean isAccessible(final Member m) {
+ final Class declaring = m.getDeclaringClass();
+ // (declaring == clazz) is just an optimization - we're calling this only from code that operates on a
+ // non-restricted class, so if the declaring class is identical to the class being inspected, then forego
+ // a potentially expensive restricted-package check.
+ return declaring == clazz || !CheckRestrictedPackage.isRestrictedClass(declaring);
+ }
+
+ /**
+ * Returns all the methods in the facet.
+ * @return all the methods in the facet.
+ */
+ Collection getMethods() {
+ return membersLookup.getMethods();
+ }
+
+
+ MethodHandle unreflectGetter(final Field field) {
+ return editMethodHandle(Lookup.PUBLIC.unreflectGetter(field));
+ }
+
+ MethodHandle unreflectSetter(final Field field) {
+ return editMethodHandle(Lookup.PUBLIC.unreflectSetter(field));
+ }
+
+ /**
+ * Returns an edited method handle. A facet might need to edit an unreflected method handle before it is usable with
+ * the facet. By default, returns the passed method handle unchanged. The class' static facet will introduce a
+ * dropArguments.
+ * @param mh the method handle to edit.
+ * @return the edited method handle.
+ */
+ abstract MethodHandle editMethodHandle(MethodHandle mh);
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/GuardedInvocationComponent.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/GuardedInvocationComponent.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,250 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.lang.invoke.MethodHandle;
+import jdk.dynalink.linker.GuardedInvocation;
+
+/**
+ * Represents one component for a GuardedInvocation of a potentially composite operation of an
+ * {@link AbstractJavaLinker}. In addition to holding a guarded invocation, it holds semantic information about its
+ * guard. All guards produced in the AbstractJavaLinker are either "Class.isInstance()" or "getClass() == clazz"
+ * expressions. This allows choosing the most restrictive guard as the guard for the composition of two components.
+ */
+class GuardedInvocationComponent {
+ enum ValidationType {
+ NONE, // No guard; the operation can be linked unconditionally (quite rare); least strict.
+ INSTANCE_OF, // "validatorClass.isInstance(obj)" guard
+ EXACT_CLASS, // "obj.getClass() == validatorClass" guard; most strict.
+ IS_ARRAY, // "obj.getClass().isArray()"
+ }
+
+ private final GuardedInvocation guardedInvocation;
+ private final Validator validator;
+
+ GuardedInvocationComponent(final MethodHandle invocation) {
+ this(invocation, null, ValidationType.NONE);
+ }
+
+ GuardedInvocationComponent(final MethodHandle invocation, final MethodHandle guard, final ValidationType validationType) {
+ this(invocation, guard, null, validationType);
+ }
+
+ GuardedInvocationComponent(final MethodHandle invocation, final MethodHandle guard, final Class validatorClass,
+ final ValidationType validationType) {
+ this(invocation, guard, new Validator(validatorClass, validationType));
+ }
+
+ GuardedInvocationComponent(final GuardedInvocation guardedInvocation, final Class validatorClass,
+ final ValidationType validationType) {
+ this(guardedInvocation, new Validator(validatorClass, validationType));
+ }
+
+ GuardedInvocationComponent replaceInvocation(final MethodHandle newInvocation) {
+ return replaceInvocation(newInvocation, guardedInvocation.getGuard());
+ }
+
+ GuardedInvocationComponent replaceInvocation(final MethodHandle newInvocation, final MethodHandle newGuard) {
+ return new GuardedInvocationComponent(guardedInvocation.replaceMethods(newInvocation,
+ newGuard), validator);
+ }
+
+ private GuardedInvocationComponent(final MethodHandle invocation, final MethodHandle guard, final Validator validator) {
+ this(new GuardedInvocation(invocation, guard), validator);
+ }
+
+ private GuardedInvocationComponent(final GuardedInvocation guardedInvocation, final Validator validator) {
+ this.guardedInvocation = guardedInvocation;
+ this.validator = validator;
+ }
+
+ GuardedInvocation getGuardedInvocation() {
+ return guardedInvocation;
+ }
+
+ Class getValidatorClass() {
+ return validator.validatorClass;
+ }
+
+ ValidationType getValidationType() {
+ return validator.validationType;
+ }
+
+ GuardedInvocationComponent compose(final MethodHandle compositeInvocation, final MethodHandle otherGuard,
+ final Class otherValidatorClass, final ValidationType otherValidationType) {
+ final Validator compositeValidator = validator.compose(new Validator(otherValidatorClass, otherValidationType));
+ final MethodHandle compositeGuard = compositeValidator == validator ? guardedInvocation.getGuard() : otherGuard;
+ return new GuardedInvocationComponent(compositeInvocation, compositeGuard, compositeValidator);
+ }
+
+ private static class Validator {
+ /*private*/ final Class validatorClass;
+ /*private*/ final ValidationType validationType;
+
+ Validator(final Class validatorClass, final ValidationType validationType) {
+ this.validatorClass = validatorClass;
+ this.validationType = validationType;
+ }
+
+ Validator compose(final Validator other) {
+ if(other.validationType == ValidationType.NONE) {
+ return this;
+ }
+ switch(validationType) {
+ case NONE:
+ return other;
+ case INSTANCE_OF:
+ switch(other.validationType) {
+ case INSTANCE_OF:
+ if(isAssignableFrom(other)) {
+ return other;
+ } else if(other.isAssignableFrom(this)) {
+ return this;
+ }
+ break;
+ case EXACT_CLASS:
+ if(isAssignableFrom(other)) {
+ return other;
+ }
+ break;
+ case IS_ARRAY:
+ if(validatorClass.isArray()) {
+ return this;
+ }
+ break;
+ default:
+ throw new AssertionError();
+ }
+ break;
+ case EXACT_CLASS:
+ switch(other.validationType) {
+ case INSTANCE_OF:
+ if(other.isAssignableFrom(this)) {
+ return this;
+ }
+ break;
+ case EXACT_CLASS:
+ if(validatorClass == other.validatorClass) {
+ return this;
+ }
+ break;
+ case IS_ARRAY:
+ if(validatorClass.isArray()) {
+ return this;
+ }
+ break;
+ default:
+ throw new AssertionError();
+ }
+ break;
+ case IS_ARRAY:
+ switch(other.validationType) {
+ case INSTANCE_OF:
+ case EXACT_CLASS:
+ if(other.validatorClass.isArray()) {
+ return other;
+ }
+ break;
+ case IS_ARRAY:
+ return this;
+ default:
+ throw new AssertionError();
+ }
+ break;
+ default:
+ throw new AssertionError();
+ }
+ throw new AssertionError("Incompatible composition " + this + " vs " + other);
+ }
+
+ private boolean isAssignableFrom(final Validator other) {
+ return validatorClass.isAssignableFrom(other.validatorClass);
+ }
+
+ @Override
+ public String toString() {
+ return "Validator[" + validationType + (validatorClass == null ? "" : (" " + validatorClass.getName())) + "]";
+ }
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/MaximallySpecific.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/MaximallySpecific.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,260 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodType;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.List;
+import jdk.dynalink.linker.ConversionComparator.Comparison;
+import jdk.dynalink.linker.LinkerServices;
+import jdk.dynalink.linker.support.TypeUtilities;
+
+/**
+ * Utility class that encapsulates the algorithm for choosing the maximally specific methods.
+ */
+class MaximallySpecific {
+ /**
+ * Given a list of methods, returns a list of maximally specific methods.
+ *
+ * @param methods the list of methods
+ * @param varArgs whether to assume the methods are varargs
+ * @return the list of maximally specific methods.
+ */
+ static List getMaximallySpecificMethods(final List methods, final boolean varArgs) {
+ return getMaximallySpecificSingleDynamicMethods(methods, varArgs, null, null);
+ }
+
+ private abstract static class MethodTypeGetter {
+ abstract MethodType getMethodType(T t);
+ }
+
+ private static final MethodTypeGetter METHOD_HANDLE_TYPE_GETTER =
+ new MethodTypeGetter() {
+ @Override
+ MethodType getMethodType(final MethodHandle t) {
+ return t.type();
+ }
+ };
+
+ private static final MethodTypeGetter DYNAMIC_METHOD_TYPE_GETTER =
+ new MethodTypeGetter() {
+ @Override
+ MethodType getMethodType(final SingleDynamicMethod t) {
+ return t.getMethodType();
+ }
+ };
+
+ /**
+ * Given a list of methods handles, returns a list of maximally specific methods, applying language-runtime
+ * specific conversion preferences.
+ *
+ * @param methods the list of method handles
+ * @param varArgs whether to assume the method handles are varargs
+ * @param argTypes concrete argument types for the invocation
+ * @return the list of maximally specific method handles.
+ */
+ static List getMaximallySpecificMethodHandles(final List methods, final boolean varArgs,
+ final Class[] argTypes, final LinkerServices ls) {
+ return getMaximallySpecificMethods(methods, varArgs, argTypes, ls, METHOD_HANDLE_TYPE_GETTER);
+ }
+
+ /**
+ * Given a list of methods, returns a list of maximally specific methods, applying language-runtime specific
+ * conversion preferences.
+ *
+ * @param methods the list of methods
+ * @param varArgs whether to assume the methods are varargs
+ * @param argTypes concrete argument types for the invocation
+ * @return the list of maximally specific methods.
+ */
+ static List getMaximallySpecificSingleDynamicMethods(final List methods,
+ final boolean varArgs, final Class[] argTypes, final LinkerServices ls) {
+ return getMaximallySpecificMethods(methods, varArgs, argTypes, ls, DYNAMIC_METHOD_TYPE_GETTER);
+ }
+
+ /**
+ * Given a list of methods, returns a list of maximally specific methods, applying language-runtime specific
+ * conversion preferences.
+ *
+ * @param methods the list of methods
+ * @param varArgs whether to assume the methods are varargs
+ * @param argTypes concrete argument types for the invocation
+ * @return the list of maximally specific methods.
+ */
+ private static List getMaximallySpecificMethods(final List methods, final boolean varArgs,
+ final Class[] argTypes, final LinkerServices ls, final MethodTypeGetter methodTypeGetter) {
+ if(methods.size() < 2) {
+ return methods;
+ }
+ final LinkedList maximals = new LinkedList<>();
+ for(final T m: methods) {
+ final MethodType methodType = methodTypeGetter.getMethodType(m);
+ boolean lessSpecific = false;
+ for(final Iterator maximal = maximals.iterator(); maximal.hasNext();) {
+ final T max = maximal.next();
+ switch(isMoreSpecific(methodType, methodTypeGetter.getMethodType(max), varArgs, argTypes, ls)) {
+ case TYPE_1_BETTER: {
+ maximal.remove();
+ break;
+ }
+ case TYPE_2_BETTER: {
+ lessSpecific = true;
+ break;
+ }
+ case INDETERMINATE: {
+ // do nothing
+ break;
+ }
+ default: {
+ throw new AssertionError();
+ }
+ }
+ }
+ if(!lessSpecific) {
+ maximals.addLast(m);
+ }
+ }
+ return maximals;
+ }
+
+ private static Comparison isMoreSpecific(final MethodType t1, final MethodType t2, final boolean varArgs, final Class[] argTypes,
+ final LinkerServices ls) {
+ final int pc1 = t1.parameterCount();
+ final int pc2 = t2.parameterCount();
+ assert varArgs || (pc1 == pc2) && (argTypes == null || argTypes.length == pc1);
+ assert (argTypes == null) == (ls == null);
+ final int maxPc = Math.max(Math.max(pc1, pc2), argTypes == null ? 0 : argTypes.length);
+ boolean t1MoreSpecific = false;
+ boolean t2MoreSpecific = false;
+ // NOTE: Starting from 1 as overloaded method resolution doesn't depend on 0th element, which is the type of
+ // 'this'. We're only dealing with instance methods here, not static methods. Actually, static methods will have
+ // a fake 'this' of type StaticClass.
+ for(int i = 1; i < maxPc; ++i) {
+ final Class c1 = getParameterClass(t1, pc1, i, varArgs);
+ final Class c2 = getParameterClass(t2, pc2, i, varArgs);
+ if(c1 != c2) {
+ final Comparison cmp = compare(c1, c2, argTypes, i, ls);
+ if(cmp == Comparison.TYPE_1_BETTER && !t1MoreSpecific) {
+ t1MoreSpecific = true;
+ if(t2MoreSpecific) {
+ return Comparison.INDETERMINATE;
+ }
+ }
+ if(cmp == Comparison.TYPE_2_BETTER && !t2MoreSpecific) {
+ t2MoreSpecific = true;
+ if(t1MoreSpecific) {
+ return Comparison.INDETERMINATE;
+ }
+ }
+ }
+ }
+ if(t1MoreSpecific) {
+ return Comparison.TYPE_1_BETTER;
+ } else if(t2MoreSpecific) {
+ return Comparison.TYPE_2_BETTER;
+ }
+ return Comparison.INDETERMINATE;
+ }
+
+ private static Comparison compare(final Class c1, final Class c2, final Class[] argTypes, final int i, final LinkerServices cmp) {
+ if(cmp != null) {
+ final Comparison c = cmp.compareConversion(argTypes[i], c1, c2);
+ if(c != Comparison.INDETERMINATE) {
+ return c;
+ }
+ }
+ if(TypeUtilities.isSubtype(c1, c2)) {
+ return Comparison.TYPE_1_BETTER;
+ } if(TypeUtilities.isSubtype(c2, c1)) {
+ return Comparison.TYPE_2_BETTER;
+ }
+ return Comparison.INDETERMINATE;
+ }
+
+ private static Class getParameterClass(final MethodType t, final int l, final int i, final boolean varArgs) {
+ return varArgs && i >= l - 1 ? t.parameterType(l - 1).getComponentType() : t.parameterType(i);
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/OverloadedDynamicMethod.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/OverloadedDynamicMethod.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,433 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodType;
+import java.security.AccessControlContext;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.text.Collator;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.IdentityHashMap;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import jdk.dynalink.CallSiteDescriptor;
+import jdk.dynalink.beans.ApplicableOverloadedMethods.ApplicabilityTest;
+import jdk.dynalink.internal.AccessControlContextFactory;
+import jdk.dynalink.internal.InternalTypeUtilities;
+import jdk.dynalink.linker.LinkerServices;
+
+/**
+ * Represents a group of {@link SingleDynamicMethod} objects that represents all overloads of a particular name (or all
+ * constructors) for a particular class. Correctly handles overload resolution, variable arity methods, and caller
+ * sensitive methods within the overloads.
+ */
+class OverloadedDynamicMethod extends DynamicMethod {
+ /**
+ * Holds a list of all methods.
+ */
+ private final LinkedList methods;
+ private final ClassLoader classLoader;
+
+ /**
+ * Creates a new overloaded dynamic method.
+ *
+ * @param clazz the class this method belongs to
+ * @param name the name of the method
+ */
+ OverloadedDynamicMethod(final Class clazz, final String name) {
+ this(new LinkedList(), clazz.getClassLoader(), getClassAndMethodName(clazz, name));
+ }
+
+ private OverloadedDynamicMethod(final LinkedList methods, final ClassLoader classLoader, final String name) {
+ super(name);
+ this.methods = methods;
+ this.classLoader = classLoader;
+ }
+
+ @Override
+ SingleDynamicMethod getMethodForExactParamTypes(final String paramTypes) {
+ final LinkedList matchingMethods = new LinkedList<>();
+ for(final SingleDynamicMethod method: methods) {
+ final SingleDynamicMethod matchingMethod = method.getMethodForExactParamTypes(paramTypes);
+ if(matchingMethod != null) {
+ matchingMethods.add(matchingMethod);
+ }
+ }
+ switch(matchingMethods.size()) {
+ case 0: {
+ return null;
+ }
+ case 1: {
+ return matchingMethods.getFirst();
+ }
+ default: {
+ throw new BootstrapMethodError("Can't choose among " + matchingMethods + " for argument types "
+ + paramTypes + " for method " + getName());
+ }
+ }
+ }
+
+ @Override
+ public MethodHandle getInvocation(final CallSiteDescriptor callSiteDescriptor, final LinkerServices linkerServices) {
+ final MethodType callSiteType = callSiteDescriptor.getMethodType();
+ // First, find all methods applicable to the call site by subtyping (JLS 15.12.2.2)
+ final ApplicableOverloadedMethods subtypingApplicables = getApplicables(callSiteType,
+ ApplicableOverloadedMethods.APPLICABLE_BY_SUBTYPING);
+ // Next, find all methods applicable by method invocation conversion to the call site (JLS 15.12.2.3).
+ final ApplicableOverloadedMethods methodInvocationApplicables = getApplicables(callSiteType,
+ ApplicableOverloadedMethods.APPLICABLE_BY_METHOD_INVOCATION_CONVERSION);
+ // Finally, find all methods applicable by variable arity invocation. (JLS 15.12.2.4).
+ final ApplicableOverloadedMethods variableArityApplicables = getApplicables(callSiteType,
+ ApplicableOverloadedMethods.APPLICABLE_BY_VARIABLE_ARITY);
+
+ // Find the methods that are maximally specific based on the call site signature
+ List maximallySpecifics = subtypingApplicables.findMaximallySpecificMethods();
+ if(maximallySpecifics.isEmpty()) {
+ maximallySpecifics = methodInvocationApplicables.findMaximallySpecificMethods();
+ if(maximallySpecifics.isEmpty()) {
+ maximallySpecifics = variableArityApplicables.findMaximallySpecificMethods();
+ }
+ }
+
+ // Now, get a list of the rest of the methods; those that are *not* applicable to the call site signature based
+ // on JLS rules. As paradoxical as that might sound, we have to consider these for dynamic invocation, as they
+ // might match more concrete types passed in invocations. That's why we provisionally call them "invokables".
+ // This is typical for very generic signatures at call sites. Typical example: call site specifies
+ // (Object, Object), and we have a method whose parameter types are (String, int). None of the JLS applicability
+ // rules will trigger, but we must consider the method, as it can be the right match for a concrete invocation.
+ @SuppressWarnings({ "unchecked", "rawtypes" })
+ final List invokables = (List)methods.clone();
+ invokables.removeAll(subtypingApplicables.getMethods());
+ invokables.removeAll(methodInvocationApplicables.getMethods());
+ invokables.removeAll(variableArityApplicables.getMethods());
+ for(final Iterator it = invokables.iterator(); it.hasNext();) {
+ final SingleDynamicMethod m = it.next();
+ if(!isApplicableDynamically(linkerServices, callSiteType, m)) {
+ it.remove();
+ }
+ }
+
+ // If no additional methods can apply at invocation time, and there's more than one maximally specific method
+ // based on call site signature, that is a link-time ambiguity. In a static scenario, javac would report an
+ // ambiguity error.
+ if(invokables.isEmpty() && maximallySpecifics.size() > 1) {
+ throw new BootstrapMethodError("Can't choose among " + maximallySpecifics + " for argument types "
+ + callSiteType);
+ }
+
+ // Merge them all.
+ invokables.addAll(maximallySpecifics);
+ switch(invokables.size()) {
+ case 0: {
+ // No overloads can ever match the call site type
+ return null;
+ }
+ case 1: {
+ // Very lucky, we ended up with a single candidate method handle based on the call site signature; we
+ // can link it very simply by delegating to the SingleDynamicMethod.
+ return invokables.iterator().next().getInvocation(callSiteDescriptor, linkerServices);
+ }
+ default: {
+ // We have more than one candidate. We have no choice but to link to a method that resolves overloads on
+ // every invocation (alternatively, we could opportunistically link the one method that resolves for the
+ // current arguments, but we'd need to install a fairly complex guard for that and when it'd fail, we'd
+ // go back all the way to candidate selection. Note that we're resolving any potential caller sensitive
+ // methods here to their handles, as the OverloadedMethod instance is specific to a call site, so it
+ // has an already determined Lookup.
+ final List methodHandles = new ArrayList<>(invokables.size());
+ for(final SingleDynamicMethod method: invokables) {
+ methodHandles.add(method.getTarget(callSiteDescriptor));
+ }
+ return new OverloadedMethod(methodHandles, this, getCallSiteClassLoader(callSiteDescriptor), callSiteType, linkerServices).getInvoker();
+ }
+ }
+ }
+
+ private static final AccessControlContext GET_CALL_SITE_CLASS_LOADER_CONTEXT =
+ AccessControlContextFactory.createAccessControlContext(
+ "getClassLoader", CallSiteDescriptor.GET_LOOKUP_PERMISSION_NAME);
+
+ private static ClassLoader getCallSiteClassLoader(final CallSiteDescriptor callSiteDescriptor) {
+ return AccessController.doPrivileged(new PrivilegedAction() {
+ @Override
+ public ClassLoader run() {
+ return callSiteDescriptor.getLookup().lookupClass().getClassLoader();
+ }
+ }, GET_CALL_SITE_CLASS_LOADER_CONTEXT);
+ }
+
+ @Override
+ public boolean contains(final SingleDynamicMethod m) {
+ for(final SingleDynamicMethod method: methods) {
+ if(method.contains(m)) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ @Override
+ public boolean isConstructor() {
+ assert !methods.isEmpty();
+ return methods.getFirst().isConstructor();
+ }
+
+ @Override
+ public String toString() {
+ // First gather the names and sort them. This makes it consistent and easier to read.
+ final List names = new ArrayList<>(methods.size());
+ int len = 0;
+ for (final SingleDynamicMethod m: methods) {
+ final String name = m.getName();
+ len += name.length();
+ names.add(name);
+ }
+ // Case insensitive sorting, so e.g. "Object" doesn't come before "boolean".
+ final Collator collator = Collator.getInstance();
+ collator.setStrength(Collator.SECONDARY);
+ Collections.sort(names, collator);
+
+ final String className = getClass().getName();
+ // Class name length + length of signatures + 2 chars/per signature for indentation and newline +
+ // 3 for brackets and initial newline
+ final int totalLength = className.length() + len + 2 * names.size() + 3;
+ final StringBuilder b = new StringBuilder(totalLength);
+ b.append('[').append(className).append('\n');
+ for(final String name: names) {
+ b.append(' ').append(name).append('\n');
+ }
+ b.append(']');
+ assert b.length() == totalLength;
+ return b.toString();
+ };
+
+ ClassLoader getClassLoader() {
+ return classLoader;
+ }
+
+ private static boolean isApplicableDynamically(final LinkerServices linkerServices, final MethodType callSiteType,
+ final SingleDynamicMethod m) {
+ final MethodType methodType = m.getMethodType();
+ final boolean varArgs = m.isVarArgs();
+ final int fixedArgLen = methodType.parameterCount() - (varArgs ? 1 : 0);
+ final int callSiteArgLen = callSiteType.parameterCount();
+
+ // Arity checks
+ if(varArgs) {
+ if(callSiteArgLen < fixedArgLen) {
+ return false;
+ }
+ } else if(callSiteArgLen != fixedArgLen) {
+ return false;
+ }
+
+ // Fixed arguments type checks, starting from 1, as receiver type doesn't participate
+ for(int i = 1; i < fixedArgLen; ++i) {
+ if(!isApplicableDynamically(linkerServices, callSiteType.parameterType(i), methodType.parameterType(i))) {
+ return false;
+ }
+ }
+ if(!varArgs) {
+ // Not vararg; both arity and types matched.
+ return true;
+ }
+
+ final Class varArgArrayType = methodType.parameterType(fixedArgLen);
+ final Class varArgType = varArgArrayType.getComponentType();
+
+ if(fixedArgLen == callSiteArgLen - 1) {
+ // Exactly one vararg; check both array type matching and array component type matching.
+ final Class callSiteArgType = callSiteType.parameterType(fixedArgLen);
+ return isApplicableDynamically(linkerServices, callSiteArgType, varArgArrayType)
+ || isApplicableDynamically(linkerServices, callSiteArgType, varArgType);
+ }
+
+ // Either zero, or more than one vararg; check if all actual vararg types match the vararg array component type.
+ for(int i = fixedArgLen; i < callSiteArgLen; ++i) {
+ if(!isApplicableDynamically(linkerServices, callSiteType.parameterType(i), varArgType)) {
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ private static boolean isApplicableDynamically(final LinkerServices linkerServices, final Class callSiteType,
+ final Class methodType) {
+ return isPotentiallyConvertible(callSiteType, methodType)
+ || linkerServices.canConvert(callSiteType, methodType);
+ }
+
+ private ApplicableOverloadedMethods getApplicables(final MethodType callSiteType, final ApplicabilityTest test) {
+ return new ApplicableOverloadedMethods(methods, callSiteType, test);
+ }
+
+ /**
+ * Add a method to this overloaded method's set.
+ *
+ * @param method a method to add
+ */
+ public void addMethod(final SingleDynamicMethod method) {
+ assert constructorFlagConsistent(method);
+ methods.add(method);
+ }
+
+ private boolean constructorFlagConsistent(final SingleDynamicMethod method) {
+ return methods.isEmpty()? true : (methods.getFirst().isConstructor() == method.isConstructor());
+ }
+
+ /**
+ * Determines whether one type can be potentially converted to another type at runtime. Allows a conversion between
+ * any subtype and supertype in either direction, and also allows a conversion between any two primitive types, as
+ * well as between any primitive type and any reference type that can hold a boxed primitive.
+ *
+ * @param callSiteType the parameter type at the call site
+ * @param methodType the parameter type in the method declaration
+ * @return true if callSiteType is potentially convertible to the methodType.
+ */
+ private static boolean isPotentiallyConvertible(final Class callSiteType, final Class methodType) {
+ // Widening or narrowing reference conversion
+ if(InternalTypeUtilities.areAssignable(callSiteType, methodType)) {
+ return true;
+ }
+ if(callSiteType.isPrimitive()) {
+ // Allow any conversion among primitives, as well as from any
+ // primitive to any type that can receive a boxed primitive.
+ // TODO: narrow this a bit, i.e. allow, say, boolean to Character?
+ // MethodHandles.convertArguments() allows it, so we might need to
+ // too.
+ return methodType.isPrimitive() || isAssignableFromBoxedPrimitive(methodType);
+ }
+ if(methodType.isPrimitive()) {
+ // Allow conversion from any reference type that can contain a
+ // boxed primitive to any primitive.
+ // TODO: narrow this a bit too?
+ return isAssignableFromBoxedPrimitive(callSiteType);
+ }
+ return false;
+ }
+
+ private static final Set> PRIMITIVE_WRAPPER_TYPES = createPrimitiveWrapperTypes();
+
+ private static Set> createPrimitiveWrapperTypes() {
+ final Map, Class> classes = new IdentityHashMap<>();
+ addClassHierarchy(classes, Boolean.class);
+ addClassHierarchy(classes, Byte.class);
+ addClassHierarchy(classes, Character.class);
+ addClassHierarchy(classes, Short.class);
+ addClassHierarchy(classes, Integer.class);
+ addClassHierarchy(classes, Long.class);
+ addClassHierarchy(classes, Float.class);
+ addClassHierarchy(classes, Double.class);
+ return classes.keySet();
+ }
+
+ private static void addClassHierarchy(final Map, Class> map, final Class clazz) {
+ if(clazz == null) {
+ return;
+ }
+ map.put(clazz, clazz);
+ addClassHierarchy(map, clazz.getSuperclass());
+ for(final Class itf: clazz.getInterfaces()) {
+ addClassHierarchy(map, itf);
+ }
+ }
+
+ /**
+ * Returns true if the class can be assigned from any boxed primitive.
+ *
+ * @param clazz the class
+ * @return true if the class can be assigned from any boxed primitive. Basically, it is true if the class is any
+ * primitive wrapper class, or a superclass or superinterface of any primitive wrapper class.
+ */
+ private static boolean isAssignableFromBoxedPrimitive(final Class clazz) {
+ return PRIMITIVE_WRAPPER_TYPES.contains(clazz);
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/OverloadedMethod.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/OverloadedMethod.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,280 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import jdk.dynalink.internal.InternalTypeUtilities;
+import jdk.dynalink.linker.LinkerServices;
+import jdk.dynalink.linker.support.Lookup;
+
+/**
+ * Represents a subset of overloaded methods for a certain method name on a certain class. It can be either a fixarg or
+ * a vararg subset depending on the subclass. The method is for a fixed number of arguments though (as it is generated
+ * for a concrete call site). As such, all methods in the subset can be invoked with the specified number of arguments
+ * (exactly matching for fixargs, or having less than or equal fixed arguments, for varargs).
+ */
+class OverloadedMethod {
+ private final Map argTypesToMethods = new ConcurrentHashMap<>();
+ private final OverloadedDynamicMethod parent;
+ private final ClassLoader callSiteClassLoader;
+ private final MethodType callSiteType;
+ private final MethodHandle invoker;
+ private final LinkerServices linkerServices;
+ private final ArrayList fixArgMethods;
+ private final ArrayList varArgMethods;
+
+ OverloadedMethod(final List methodHandles,
+ final OverloadedDynamicMethod parent,
+ final ClassLoader callSiteClassLoader,
+ final MethodType callSiteType,
+ final LinkerServices linkerServices) {
+ this.parent = parent;
+ this.callSiteClassLoader = callSiteClassLoader;
+ final Class commonRetType = getCommonReturnType(methodHandles);
+ this.callSiteType = callSiteType.changeReturnType(commonRetType);
+ this.linkerServices = linkerServices;
+
+ fixArgMethods = new ArrayList<>(methodHandles.size());
+ varArgMethods = new ArrayList<>(methodHandles.size());
+ final int argNum = callSiteType.parameterCount();
+ for(final MethodHandle mh: methodHandles) {
+ if(mh.isVarargsCollector()) {
+ final MethodHandle asFixed = mh.asFixedArity();
+ if(argNum == asFixed.type().parameterCount()) {
+ fixArgMethods.add(asFixed);
+ }
+ varArgMethods.add(mh);
+ } else {
+ fixArgMethods.add(mh);
+ }
+ }
+ fixArgMethods.trimToSize();
+ varArgMethods.trimToSize();
+
+ final MethodHandle bound = SELECT_METHOD.bindTo(this);
+ final MethodHandle collecting = SingleDynamicMethod.collectArguments(bound, argNum).asType(
+ callSiteType.changeReturnType(MethodHandle.class));
+ invoker = linkerServices.asTypeLosslessReturn(MethodHandles.foldArguments(
+ MethodHandles.exactInvoker(this.callSiteType), collecting), callSiteType);
+ }
+
+ MethodHandle getInvoker() {
+ return invoker;
+ }
+
+ private static final MethodHandle SELECT_METHOD = Lookup.findOwnSpecial(MethodHandles.lookup(), "selectMethod",
+ MethodHandle.class, Object[].class);
+
+ @SuppressWarnings("unused")
+ private MethodHandle selectMethod(final Object[] args) throws NoSuchMethodException {
+ final Class[] argTypes = new Class[args.length];
+ for(int i = 0; i < argTypes.length; ++i) {
+ final Object arg = args[i];
+ argTypes[i] = arg == null ? ClassString.NULL_CLASS : arg.getClass();
+ }
+ final ClassString classString = new ClassString(argTypes);
+ MethodHandle method = argTypesToMethods.get(classString);
+ if(method == null) {
+ List methods = classString.getMaximallySpecifics(fixArgMethods, linkerServices, false);
+ if(methods.isEmpty()) {
+ methods = classString.getMaximallySpecifics(varArgMethods, linkerServices, true);
+ }
+ switch(methods.size()) {
+ case 0: {
+ method = getNoSuchMethodThrower(argTypes);
+ break;
+ }
+ case 1: {
+ method = SingleDynamicMethod.getInvocation(methods.get(0), callSiteType, linkerServices);
+ break;
+ }
+ default: {
+ // This is unfortunate - invocation time ambiguity. We can still save the day if
+ method = getAmbiguousMethodThrower(argTypes, methods);
+ break;
+ }
+ }
+ // Avoid keeping references to unrelated classes; this ruins the
+ // performance a bit, but avoids class loader memory leaks.
+ if(classString.isVisibleFrom(callSiteClassLoader)) {
+ argTypesToMethods.put(classString, method);
+ }
+ }
+ return method;
+ }
+
+ private MethodHandle getNoSuchMethodThrower(final Class[] argTypes) {
+ return adaptThrower(MethodHandles.insertArguments(THROW_NO_SUCH_METHOD, 0, this, argTypes));
+ }
+
+ private static final MethodHandle THROW_NO_SUCH_METHOD = Lookup.findOwnSpecial(MethodHandles.lookup(),
+ "throwNoSuchMethod", void.class, Class[].class);
+
+ @SuppressWarnings("unused")
+ private void throwNoSuchMethod(final Class[] argTypes) throws NoSuchMethodException {
+ if(varArgMethods.isEmpty()) {
+ throw new NoSuchMethodException("None of the fixed arity signatures " + getSignatureList(fixArgMethods) +
+ " of method " + parent.getName() + " match the argument types " + argTypesString(argTypes));
+ }
+ throw new NoSuchMethodException("None of the fixed arity signatures " + getSignatureList(fixArgMethods) +
+ " or the variable arity signatures " + getSignatureList(varArgMethods) + " of the method " +
+ parent.getName() + " match the argument types " + argTypesString(argTypes));
+ }
+
+ private MethodHandle getAmbiguousMethodThrower(final Class[] argTypes, final List methods) {
+ return adaptThrower(MethodHandles.insertArguments(THROW_AMBIGUOUS_METHOD, 0, this, argTypes, methods));
+ }
+
+ private MethodHandle adaptThrower(final MethodHandle rawThrower) {
+ return MethodHandles.dropArguments(rawThrower, 0, callSiteType.parameterList()).asType(callSiteType);
+ }
+
+ private static final MethodHandle THROW_AMBIGUOUS_METHOD = Lookup.findOwnSpecial(MethodHandles.lookup(),
+ "throwAmbiguousMethod", void.class, Class[].class, List.class);
+
+ @SuppressWarnings("unused")
+ private void throwAmbiguousMethod(final Class[] argTypes, final List methods) throws NoSuchMethodException {
+ final String arity = methods.get(0).isVarargsCollector() ? "variable" : "fixed";
+ throw new NoSuchMethodException("Can't unambiguously select between " + arity + " arity signatures " +
+ getSignatureList(methods) + " of the method " + parent.getName() + " for argument types " +
+ argTypesString(argTypes));
+ }
+
+ private static String argTypesString(final Class[] classes) {
+ final StringBuilder b = new StringBuilder().append('[');
+ appendTypes(b, classes, false);
+ return b.append(']').toString();
+ }
+
+ private static String getSignatureList(final List methods) {
+ final StringBuilder b = new StringBuilder().append('[');
+ final Iterator it = methods.iterator();
+ if(it.hasNext()) {
+ appendSig(b, it.next());
+ while(it.hasNext()) {
+ appendSig(b.append(", "), it.next());
+ }
+ }
+ return b.append(']').toString();
+ }
+
+ private static void appendSig(final StringBuilder b, final MethodHandle m) {
+ b.append('(');
+ appendTypes(b, m.type().parameterArray(), m.isVarargsCollector());
+ b.append(')');
+ }
+
+ private static void appendTypes(final StringBuilder b, final Class[] classes, final boolean varArg) {
+ final int l = classes.length;
+ if(!varArg) {
+ if(l > 1) {
+ b.append(classes[1].getCanonicalName());
+ for(int i = 2; i < l; ++i) {
+ b.append(", ").append(classes[i].getCanonicalName());
+ }
+ }
+ } else {
+ for(int i = 1; i < l - 1; ++i) {
+ b.append(classes[i].getCanonicalName()).append(", ");
+ }
+ b.append(classes[l - 1].getComponentType().getCanonicalName()).append("...");
+ }
+ }
+
+ private static Class getCommonReturnType(final List methodHandles) {
+ final Iterator it = methodHandles.iterator();
+ Class retType = it.next().type().returnType();
+ while(it.hasNext()) {
+ retType = InternalTypeUtilities.getCommonLosslessConversionType(retType, it.next().type().returnType());
+ }
+ return retType;
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/SimpleDynamicMethod.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/SimpleDynamicMethod.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,151 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodType;
+import jdk.dynalink.CallSiteDescriptor;
+
+/**
+ * A dynamic method bound to exactly one Java method or constructor that is not caller sensitive. Since its target is
+ * not caller sensitive, this class pre-caches its method handle and always returns it from the call to
+ * {@link #getTarget(CallSiteDescriptor)}. Can be used in general to represents dynamic methods bound to a single method handle,
+ * even if that handle is not mapped to a Java method, i.e. as a wrapper around field getters/setters, array element
+ * getters/setters, etc.
+ */
+class SimpleDynamicMethod extends SingleDynamicMethod {
+ private final MethodHandle target;
+ private final boolean constructor;
+
+ /**
+ * Creates a new simple dynamic method, with a name constructed from the class name, method name, and handle
+ * signature.
+ *
+ * @param target the target method handle
+ * @param clazz the class declaring the method
+ * @param name the simple name of the method
+ */
+ SimpleDynamicMethod(final MethodHandle target, final Class clazz, final String name) {
+ this(target, clazz, name, false);
+ }
+
+ /**
+ * Creates a new simple dynamic method, with a name constructed from the class name, method name, and handle
+ * signature.
+ *
+ * @param target the target method handle
+ * @param clazz the class declaring the method
+ * @param name the simple name of the method
+ * @param constructor does this represent a constructor?
+ */
+ SimpleDynamicMethod(final MethodHandle target, final Class clazz, final String name, final boolean constructor) {
+ super(getName(target, clazz, name, constructor));
+ this.target = target;
+ this.constructor = constructor;
+ }
+
+ private static String getName(final MethodHandle target, final Class clazz, final String name, final boolean constructor) {
+ return getMethodNameWithSignature(target.type(), constructor ? name : getClassAndMethodName(clazz, name), !constructor);
+ }
+
+ @Override
+ boolean isVarArgs() {
+ return target.isVarargsCollector();
+ }
+
+ @Override
+ MethodType getMethodType() {
+ return target.type();
+ }
+
+ @Override
+ MethodHandle getTarget(final CallSiteDescriptor desc) {
+ return target;
+ }
+
+ @Override
+ boolean isConstructor() {
+ return constructor;
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/SingleDynamicMethod.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/SingleDynamicMethod.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,312 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import java.lang.reflect.Array;
+import java.util.StringTokenizer;
+import jdk.dynalink.CallSiteDescriptor;
+import jdk.dynalink.linker.LinkerServices;
+import jdk.dynalink.linker.support.Guards;
+import jdk.dynalink.linker.support.Lookup;
+
+/**
+ * Base class for dynamic methods that dispatch to a single target Java method or constructor. Handles adaptation of the
+ * target method to a call site type (including mapping variable arity methods to a call site signature with different
+ * arity).
+ */
+abstract class SingleDynamicMethod extends DynamicMethod {
+
+ private static final MethodHandle CAN_CONVERT_TO = Lookup.findOwnStatic(MethodHandles.lookup(), "canConvertTo", boolean.class, LinkerServices.class, Class.class, Object.class);
+
+ SingleDynamicMethod(final String name) {
+ super(name);
+ }
+
+ /**
+ * Returns true if this method is variable arity.
+ * @return true if this method is variable arity.
+ */
+ abstract boolean isVarArgs();
+
+ /**
+ * Returns this method's native type.
+ * @return this method's native type.
+ */
+ abstract MethodType getMethodType();
+
+ /**
+ * Given a specified call site descriptor, returns a method handle to this method's target. The target
+ * should only depend on the descriptor's lookup, and it should only retrieve it (as a privileged
+ * operation) when it is absolutely needed.
+ * @param desc the call site descriptor to use.
+ * @return the handle to this method's target method.
+ */
+ abstract MethodHandle getTarget(CallSiteDescriptor desc);
+
+ @Override
+ MethodHandle getInvocation(final CallSiteDescriptor callSiteDescriptor, final LinkerServices linkerServices) {
+ return getInvocation(getTarget(callSiteDescriptor), callSiteDescriptor.getMethodType(),
+ linkerServices);
+ }
+
+ @Override
+ SingleDynamicMethod getMethodForExactParamTypes(final String paramTypes) {
+ return typeMatchesDescription(paramTypes, getMethodType()) ? this : null;
+ }
+
+ @Override
+ boolean contains(final SingleDynamicMethod method) {
+ return getMethodType().parameterList().equals(method.getMethodType().parameterList());
+ }
+
+ static String getMethodNameWithSignature(final MethodType type, final String methodName, final boolean withReturnType) {
+ final String typeStr = type.toString();
+ final int retTypeIndex = typeStr.lastIndexOf(')') + 1;
+ int secondParamIndex = typeStr.indexOf(',') + 1;
+ if(secondParamIndex == 0) {
+ secondParamIndex = retTypeIndex - 1;
+ }
+ final StringBuilder b = new StringBuilder();
+ if (withReturnType) {
+ b.append(typeStr, retTypeIndex, typeStr.length()).append(' ');
+ }
+ return b.append(methodName).append('(').append(typeStr, secondParamIndex, retTypeIndex).toString();
+ }
+
+ /**
+ * Given a method handle and a call site type, adapts the method handle to the call site type. Performs type
+ * conversions as needed using the specified linker services, and in case that the method handle is a vararg
+ * collector, matches it to the arity of the call site. The type of the return value is only changed if it can be
+ * converted using a conversion that loses neither precision nor magnitude, see
+ * {@link LinkerServices#asTypeLosslessReturn(MethodHandle, MethodType)}.
+ * @param target the method handle to adapt
+ * @param callSiteType the type of the call site
+ * @param linkerServices the linker services used for type conversions
+ * @return the adapted method handle.
+ */
+ static MethodHandle getInvocation(final MethodHandle target, final MethodType callSiteType, final LinkerServices linkerServices) {
+ final MethodHandle filteredTarget = linkerServices.filterInternalObjects(target);
+ final MethodType methodType = filteredTarget.type();
+ final int paramsLen = methodType.parameterCount();
+ final boolean varArgs = target.isVarargsCollector();
+ final MethodHandle fixTarget = varArgs ? filteredTarget.asFixedArity() : filteredTarget;
+ final int fixParamsLen = varArgs ? paramsLen - 1 : paramsLen;
+ final int argsLen = callSiteType.parameterCount();
+ if(argsLen < fixParamsLen) {
+ // Less actual arguments than number of fixed declared arguments; can't invoke.
+ return null;
+ }
+ // Method handle has the same number of fixed arguments as the call site type
+ if(argsLen == fixParamsLen) {
+ // Method handle that matches the number of actual arguments as the number of fixed arguments
+ final MethodHandle matchedMethod;
+ if(varArgs) {
+ // If vararg, add a zero-length array of the expected type as the last argument to signify no variable
+ // arguments.
+ matchedMethod = MethodHandles.insertArguments(fixTarget, fixParamsLen, Array.newInstance(
+ methodType.parameterType(fixParamsLen).getComponentType(), 0));
+ } else {
+ // Otherwise, just use the method
+ matchedMethod = fixTarget;
+ }
+ return createConvertingInvocation(matchedMethod, linkerServices, callSiteType);
+ }
+
+ // What's below only works for varargs
+ if(!varArgs) {
+ return null;
+ }
+
+ final Class varArgType = methodType.parameterType(fixParamsLen);
+ // Handle a somewhat sinister corner case: caller passes exactly one argument in the vararg position, and we
+ // must handle both a prepacked vararg array as well as a genuine 1-long vararg sequence.
+ if(argsLen == paramsLen) {
+ final Class callSiteLastArgType = callSiteType.parameterType(fixParamsLen);
+ if(varArgType.isAssignableFrom(callSiteLastArgType)) {
+ // Call site signature guarantees we'll always be passed a single compatible array; just link directly
+ // to the method, introducing necessary conversions. Also, preserve it being a variable arity method.
+ return createConvertingInvocation(filteredTarget, linkerServices, callSiteType).asVarargsCollector(
+ callSiteLastArgType);
+ }
+
+ // This method handle takes the single argument and packs it into a newly allocated single-element array. It
+ // will be used when the incoming argument can't be converted to the vararg array type (the "vararg packer"
+ // method).
+ final MethodHandle varArgCollectingInvocation = createConvertingInvocation(collectArguments(fixTarget,
+ argsLen), linkerServices, callSiteType);
+
+ // Is call site type assignable from an array type (e.g. Object:int[], or Object[]:String[])
+ final boolean isAssignableFromArray = callSiteLastArgType.isAssignableFrom(varArgType);
+ // Do we have a custom conversion that can potentially convert the call site type to an array?
+ final boolean isCustomConvertible = linkerServices.canConvert(callSiteLastArgType, varArgType);
+ if(!isAssignableFromArray && !isCustomConvertible) {
+ // Call site signature guarantees the argument can definitely not be converted to an array (i.e. it is
+ // primitive), and no conversion can help with it either. Link immediately to a vararg-packing method
+ // handle.
+ return varArgCollectingInvocation;
+ }
+
+ // This method handle employs language-specific conversions to convert the last argument into an array of
+ // vararg type.
+ final MethodHandle arrayConvertingInvocation = createConvertingInvocation(MethodHandles.filterArguments(
+ fixTarget, fixParamsLen, linkerServices.getTypeConverter(callSiteLastArgType, varArgType)),
+ linkerServices, callSiteType);
+
+ // This method handle determines whether the value can be converted to the array of vararg type using a
+ // language-specific conversion.
+ final MethodHandle canConvertArgToArray = MethodHandles.insertArguments(CAN_CONVERT_TO, 0, linkerServices,
+ varArgType);
+
+ // This one adjusts the previous one for the location of the argument and the call site type.
+ final MethodHandle canConvertLastArgToArray = MethodHandles.dropArguments(canConvertArgToArray, 0,
+ MethodType.genericMethodType(fixParamsLen).parameterList()).asType(callSiteType.changeReturnType(boolean.class));
+
+ // This one takes the previous ones and combines them into a method handle that converts the argument into
+ // a vararg array when it can, otherwise falls back to the vararg packer.
+ final MethodHandle convertToArrayWhenPossible = MethodHandles.guardWithTest(canConvertLastArgToArray,
+ arrayConvertingInvocation, varArgCollectingInvocation);
+
+ if(isAssignableFromArray) {
+ return MethodHandles.guardWithTest(
+ // Is incoming parameter already a compatible array?
+ Guards.isInstance(varArgType, fixParamsLen, callSiteType),
+ // Yes: just pass it to the method
+ createConvertingInvocation(fixTarget, linkerServices, callSiteType),
+ // No: either go through a custom conversion, or if it is not possible, go directly to the
+ // vararg packer.
+ isCustomConvertible ? convertToArrayWhenPossible : varArgCollectingInvocation);
+ }
+
+ // Just do the custom conversion with fallback to the vararg packer logic.
+ assert isCustomConvertible;
+ return convertToArrayWhenPossible;
+ }
+
+ // Remaining case: more than one vararg.
+ return createConvertingInvocation(collectArguments(fixTarget, argsLen), linkerServices, callSiteType);
+ }
+
+ @SuppressWarnings("unused")
+ private static boolean canConvertTo(final LinkerServices linkerServices, final Class to, final Object obj) {
+ return obj == null ? false : linkerServices.canConvert(obj.getClass(), to);
+ }
+
+ /**
+ * Creates a method handle out of the original target that will collect the varargs for the exact component type of
+ * the varArg array. Note that this will nicely trigger language-specific type converters for exactly those varargs
+ * for which it is necessary when later passed to linkerServices.convertArguments().
+ *
+ * @param target the original method handle
+ * @param parameterCount the total number of arguments in the new method handle
+ * @return a collecting method handle
+ */
+ static MethodHandle collectArguments(final MethodHandle target, final int parameterCount) {
+ final MethodType methodType = target.type();
+ final int fixParamsLen = methodType.parameterCount() - 1;
+ final Class arrayType = methodType.parameterType(fixParamsLen);
+ return target.asCollector(arrayType, parameterCount - fixParamsLen);
+ }
+
+ private static MethodHandle createConvertingInvocation(final MethodHandle sizedMethod,
+ final LinkerServices linkerServices, final MethodType callSiteType) {
+ return linkerServices.asTypeLosslessReturn(sizedMethod, callSiteType);
+ }
+
+ private static boolean typeMatchesDescription(final String paramTypes, final MethodType type) {
+ final StringTokenizer tok = new StringTokenizer(paramTypes, ", ");
+ for(int i = 1; i < type.parameterCount(); ++i) { // i = 1 as we ignore the receiver
+ if(!(tok.hasMoreTokens() && typeNameMatches(tok.nextToken(), type.parameterType(i)))) {
+ return false;
+ }
+ }
+ return !tok.hasMoreTokens();
+ }
+
+ private static boolean typeNameMatches(final String typeName, final Class type) {
+ return typeName.equals(typeName.indexOf('.') == -1 ? type.getSimpleName() : type.getCanonicalName());
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/StaticClass.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/StaticClass.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,179 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.io.Serializable;
+import java.util.Objects;
+import jdk.dynalink.StandardOperation;
+
+/**
+ * Object that allows access to the static members of a class (its static
+ * methods, properties, and fields), as well as construction of instances using
+ * {@link StandardOperation#NEW} operation. In Dynalink, {@link Class} objects
+ * are not treated specially and act as ordinary Java objects; you can use e.g.
+ * {@code NamedOperation(GET_PROPERTY, "superclass")} as a property getter to
+ * invoke {@code clazz.getSuperclass()}. On the other hand, you can not use
+ * {@code Class} objects to access static members of a class, nor to create new
+ * instances of the class using {@code NEW}. This is consistent with how
+ * {@code Class} objects behave in Java: in Java, you write e.g.
+ * {@code new BitSet()} instead of {@code new BitSet.class()}. Similarly, you
+ * write {@code System.out} and not {@code System.class.out}. It is this aspect
+ * of using a class name as the constructor and a namespace for static members
+ * that {@code StaticClass} embodies.
+ *
+ * Objects of this class are recognized by the {@link BeansLinker} as being
+ * special, and operations on them will be linked against the represented class'
+ * static members. The {@code "class"} synthetic property is additionally
+ * recognized and returns the Java {@link Class} object, just as in Java
+ * {@code System.class} evaluates to the {@code Class} object for the
+ * {@code} System class. Conversely, {@link Class} objects exposed through
+ * {@link BeansLinker} expose the {@code "static"} synthetic property which
+ * returns their {@code StaticClass} object (there is no equivalent to this in
+ * Java).
+ *
+ * In summary, instances of this class act as namespaces for static members and
+ * as constructors for classes, much the same way as specifying a class name in
+ * Java language does, except that in Java this is just a syntactic element,
+ * while in Dynalink they are expressed as actual objects.
+ *
{@code StaticClass} objects representing Java array types will act as
+ * constructors taking a single int argument and create an array of the
+ * specified size.
+ *
+ * If the class has several constructors, {@link StandardOperation#NEW} on
+ * {@code StaticClass} will try to select the most specific applicable
+ * constructor. You might want to expose a mechanism in your language for
+ * selecting a constructor with an explicit signature through
+ * {@link BeansLinker#getConstructorMethod(Class, String)}.
+ */
+public final class StaticClass implements Serializable {
+ private static final ClassValue staticClasses = new ClassValue() {
+ @Override
+ protected StaticClass computeValue(final Class type) {
+ return new StaticClass(type);
+ }
+ };
+
+ private static final long serialVersionUID = 1L;
+
+ /**
+ * The runtime {@code Class} object whose static members this
+ * {@code StaticClass} represents.
+ */
+ private final Class clazz;
+
+ /*private*/ StaticClass(final Class clazz) {
+ this.clazz = Objects.requireNonNull(clazz);
+ }
+
+ /**
+ * Retrieves the {@link StaticClass} instance for the specified class.
+ * @param clazz the class for which the static facet is requested.
+ * @return the {@link StaticClass} instance representing the specified class.
+ */
+ public static StaticClass forClass(final Class clazz) {
+ return staticClasses.get(clazz);
+ }
+
+ /**
+ * Returns the represented Java class.
+ * @return the represented Java class.
+ */
+ public Class getRepresentedClass() {
+ return clazz;
+ }
+
+ @Override
+ public String toString() {
+ return "StaticClass[" + clazz.getName() + "]";
+ }
+
+ /**
+ * Returns {@link #forClass(Class)} for the underlying {@code clazz} field
+ * ensuring that deserialization doesn't create non-canonical instances.
+ * @return {@link #forClass(Class)} for the underlying {@code clazz} field.
+ */
+ private Object readResolve() {
+ return forClass(clazz);
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/StaticClassIntrospector.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/StaticClassIntrospector.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import java.util.HashMap;
+import java.util.Map;
+
+class StaticClassIntrospector extends FacetIntrospector {
+ StaticClassIntrospector(final Class clazz) {
+ super(clazz, false);
+ }
+
+ @Override
+ Map getInnerClassGetters() {
+ final Map map = new HashMap<>();
+ for(final Class innerClass: membersLookup.getInnerClasses()) {
+ map.put(innerClass.getSimpleName(), editMethodHandle(MethodHandles.constant(StaticClass.class,
+ StaticClass.forClass(innerClass))));
+ }
+ return map;
+ }
+
+ @Override
+ MethodHandle editMethodHandle(final MethodHandle mh) {
+ return editStaticMethodHandle(mh);
+ }
+
+ static MethodHandle editStaticMethodHandle(final MethodHandle mh) {
+ return dropReceiver(mh, Object.class);
+ }
+
+ static MethodHandle editConstructorMethodHandle(final MethodHandle cmh) {
+ return dropReceiver(cmh, StaticClass.class);
+ }
+
+ private static MethodHandle dropReceiver(final MethodHandle mh, final Class receiverClass) {
+ MethodHandle newHandle = MethodHandles.dropArguments(mh, 0, receiverClass);
+ // NOTE: this is a workaround for the fact that dropArguments doesn't preserve vararg collector state.
+ if(mh.isVarargsCollector() && !newHandle.isVarargsCollector()) {
+ final MethodType type = mh.type();
+ newHandle = newHandle.asVarargsCollector(type.parameterType(type.parameterCount() - 1));
+ }
+ return newHandle;
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/StaticClassLinker.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/StaticClassLinker.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,216 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.beans;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import java.lang.reflect.Array;
+import java.util.Arrays;
+import java.util.Set;
+import jdk.dynalink.CallSiteDescriptor;
+import jdk.dynalink.NamedOperation;
+import jdk.dynalink.StandardOperation;
+import jdk.dynalink.beans.GuardedInvocationComponent.ValidationType;
+import jdk.dynalink.linker.GuardedInvocation;
+import jdk.dynalink.linker.LinkRequest;
+import jdk.dynalink.linker.LinkerServices;
+import jdk.dynalink.linker.TypeBasedGuardingDynamicLinker;
+import jdk.dynalink.linker.support.Lookup;
+
+/**
+ * Provides a linker for the {@link StaticClass} objects.
+ */
+class StaticClassLinker implements TypeBasedGuardingDynamicLinker {
+ private static final ClassValue linkers = new ClassValue() {
+ @Override
+ protected SingleClassStaticsLinker computeValue(final Class clazz) {
+ return new SingleClassStaticsLinker(clazz);
+ }
+ };
+
+ private static class SingleClassStaticsLinker extends AbstractJavaLinker {
+ private final DynamicMethod constructor;
+
+ SingleClassStaticsLinker(final Class clazz) {
+ super(clazz, IS_CLASS.bindTo(clazz));
+ // Map "staticClassObject.class" to StaticClass.getRepresentedClass(). Some adventurous soul could subclass
+ // StaticClass, so we use INSTANCE_OF validation instead of EXACT_CLASS.
+ setPropertyGetter("class", GET_CLASS, ValidationType.INSTANCE_OF);
+ constructor = createConstructorMethod(clazz);
+ }
+
+ /**
+ * Creates a dynamic method containing all overloads of a class' public constructor
+ * @param clazz the target class
+ * @return a dynamic method containing all overloads of a class' public constructor. If the class has no public
+ * constructors, returns null.
+ */
+ private static DynamicMethod createConstructorMethod(final Class clazz) {
+ if(clazz.isArray()) {
+ final MethodHandle boundArrayCtor = ARRAY_CTOR.bindTo(clazz.getComponentType());
+ return new SimpleDynamicMethod(StaticClassIntrospector.editConstructorMethodHandle(
+ boundArrayCtor.asType(boundArrayCtor.type().changeReturnType(clazz))), clazz, "");
+ }
+ if(CheckRestrictedPackage.isRestrictedClass(clazz)) {
+ return null;
+ }
+ return createDynamicMethod(Arrays.asList(clazz.getConstructors()), clazz, "");
+ }
+
+ @Override
+ FacetIntrospector createFacetIntrospector() {
+ return new StaticClassIntrospector(clazz);
+ }
+
+ @Override
+ public GuardedInvocation getGuardedInvocation(final LinkRequest request, final LinkerServices linkerServices)
+ throws Exception {
+ final GuardedInvocation gi = super.getGuardedInvocation(request, linkerServices);
+ if(gi != null) {
+ return gi;
+ }
+ final CallSiteDescriptor desc = request.getCallSiteDescriptor();
+ if(NamedOperation.getBaseOperation(desc.getOperation()) == StandardOperation.NEW && constructor != null) {
+ final MethodHandle ctorInvocation = constructor.getInvocation(desc, linkerServices);
+ if(ctorInvocation != null) {
+ return new GuardedInvocation(ctorInvocation, getClassGuard(desc.getMethodType()));
+ }
+ }
+ return null;
+ }
+
+ @Override
+ SingleDynamicMethod getConstructorMethod(final String signature) {
+ return constructor != null? constructor.getMethodForExactParamTypes(signature) : null;
+ }
+ }
+
+ static Object getConstructorMethod(final Class clazz, final String signature) {
+ return linkers.get(clazz).getConstructorMethod(signature);
+ }
+
+ static Set getReadableStaticPropertyNames(final Class clazz) {
+ return linkers.get(clazz).getReadablePropertyNames();
+ }
+
+ static Set getWritableStaticPropertyNames(final Class clazz) {
+ return linkers.get(clazz).getWritablePropertyNames();
+ }
+
+ static Set getStaticMethodNames(final Class clazz) {
+ return linkers.get(clazz).getMethodNames();
+ }
+
+ @Override
+ public GuardedInvocation getGuardedInvocation(final LinkRequest request, final LinkerServices linkerServices) throws Exception {
+ final Object receiver = request.getReceiver();
+ if(receiver instanceof StaticClass) {
+ return linkers.get(((StaticClass)receiver).getRepresentedClass()).getGuardedInvocation(request,
+ linkerServices);
+ }
+ return null;
+ }
+
+ @Override
+ public boolean canLinkType(final Class type) {
+ return type == StaticClass.class;
+ }
+
+ /*private*/ static final MethodHandle GET_CLASS;
+ /*private*/ static final MethodHandle IS_CLASS;
+ /*private*/ static final MethodHandle ARRAY_CTOR = Lookup.PUBLIC.findStatic(Array.class, "newInstance",
+ MethodType.methodType(Object.class, Class.class, int.class));
+
+ static {
+ final Lookup lookup = new Lookup(MethodHandles.lookup());
+ GET_CLASS = lookup.findVirtual(StaticClass.class, "getRepresentedClass", MethodType.methodType(Class.class));
+ IS_CLASS = lookup.findOwnStatic("isClass", Boolean.TYPE, Class.class, Object.class);
+ }
+
+ @SuppressWarnings("unused")
+ private static boolean isClass(final Class clazz, final Object obj) {
+ return obj instanceof StaticClass && ((StaticClass)obj).getRepresentedClass() == clazz;
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/messages.properties
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/messages.properties Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,25 @@
+# Copyright 2009-2013 Attila Szegedi
+#
+# Licensed under either the Apache License, Version 2.0 (the "Apache
+# License") or the BSD License (the "BSD License"), with licensee
+# being free to choose either of the two at their discretion.
+#
+# You may not use this file except in compliance with either the Apache
+# License or the BSD License.
+#
+# A copy of the BSD License is available in the root directory of the
+# source distribution of the project under the file name
+# "Dynalink-License-BSD.txt".
+#
+# A copy of the Apache License is available in the root directory of the
+# source distribution of the project under the file name
+# "Dynalink-License-Apache-2.0.txt". Alternatively, you may obtain a
+# copy of the Apache License at
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See your chosen License for the specific language governing permissions
+# and limitations under that License.
+
+couldNotDiscoverAccessibleMethods=Could not discover accessible methods of class {0}, trying its superclasses and interfaces.
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/package-info.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/beans/package-info.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/**
+ * Contains the linker for ordinary Java objects.
+ * @since 1.9
+ */
+@jdk.Exported
+package jdk.dynalink.beans;
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/internal/AccessControlContextFactory.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/internal/AccessControlContextFactory.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.dynalink.internal;
+
+import java.security.AccessControlContext;
+import java.security.Permission;
+import java.security.Permissions;
+import java.security.ProtectionDomain;
+import java.util.stream.Stream;
+
+/**
+ * Utility class for creating permission-restricting {@link AccessControlContext}s.
+ */
+public final class AccessControlContextFactory {
+ private AccessControlContextFactory () {
+ }
+
+ /**
+ * Creates an access control context with no permissions.
+ * @return an access control context with no permissions.
+ */
+ public static AccessControlContext createAccessControlContext() {
+ return createAccessControlContext(new Permission[0]);
+ }
+
+ /**
+ * Creates an access control context limited to only the specified permissions.
+ * @param permissions the permissions for the newly created access control context.
+ * @return a new access control context limited to only the specified permissions.
+ */
+ public static AccessControlContext createAccessControlContext(final Permission... permissions) {
+ final Permissions perms = new Permissions();
+ for(final Permission permission: permissions) {
+ perms.add(permission);
+ }
+ return new AccessControlContext(new ProtectionDomain[] { new ProtectionDomain(null, perms) });
+ }
+
+ /**
+ * Creates an access control context limited to only the {@link RuntimePermission}s
+ * of the given names.
+ * @param runtimePermissionNames the names of runtime permissions for the
+ * newly created access control context.
+ * @return a new access control context limited to only the runtime
+ * permissions with the specified names.
+ */
+ public static AccessControlContext createAccessControlContext(final String... runtimePermissionNames) {
+ return createAccessControlContext(makeRuntimePermissions(runtimePermissionNames));
+ }
+
+ private static Permission[] makeRuntimePermissions(final String... runtimePermissionNames) {
+ return Stream.of(runtimePermissionNames).map(RuntimePermission::new).toArray(Permission[]::new);
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/internal/InternalTypeUtilities.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/internal/InternalTypeUtilities.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,187 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package jdk.dynalink.internal;
+
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Set;
+import jdk.dynalink.linker.support.TypeUtilities;
+
+/**
+ * Various static utility methods for testing type relationships; internal to Dynalink.
+ */
+public class InternalTypeUtilities {
+ private InternalTypeUtilities() {
+ }
+
+ /**
+ * Returns true if either of the types is assignable from the other.
+ * @param c1 one type
+ * @param c2 another type
+ * @return true if either c1 is assignable from c2 or c2 is assignable from c1.
+ */
+ public static boolean areAssignable(final Class c1, final Class c2) {
+ return c1.isAssignableFrom(c2) || c2.isAssignableFrom(c1);
+ }
+
+ /**
+ * Return true if it is safe to strongly reference a class from the referred
+ * class loader from a class associated with the referring class loader
+ * without risking a class loader memory leak. Generally, it is only safe
+ * to reference classes from the same or ancestor class loader. {@code null}
+ * indicates the system class loader; classes from it can always be
+ * directly referenced, and it can only directly reference classes from
+ * itself. This method can be used by language runtimes to ensure they are
+ * using weak references in their linkages when they need to link to methods
+ * in unrelated class loaders.
+ *
+ * @param referrerLoader the referrer class loader.
+ * @param referredLoader the referred class loader
+ * @return true if it is safe to strongly reference the class from referred
+ * in referred.
+ * @throws SecurityException if the caller does not have the
+ * {@code RuntimePermission("getClassLoader")} permission and the method
+ * needs to traverse the parent class loader chain.
+ */
+ public static boolean canReferenceDirectly(final ClassLoader referrerLoader, final ClassLoader referredLoader) {
+ if(referredLoader == null) {
+ // Can always refer directly to a system class
+ return true;
+ }
+ if(referrerLoader == null) {
+ // System classes can't refer directly to any non-system class
+ return false;
+ }
+ // Otherwise, can only refer directly to classes residing in same or
+ // parent class loader.
+
+ ClassLoader referrer = referrerLoader;
+ do {
+ if(referrer == referredLoader) {
+ return true;
+ }
+ referrer = referrer.getParent();
+ } while(referrer != null);
+ return false;
+ }
+
+ /**
+ * Given two types represented by c1 and c2, returns a type that is their
+ * most specific common supertype for purposes of lossless conversions.
+ *
+ * @param c1 one type
+ * @param c2 another type
+ * @return their most common superclass or superinterface for purposes of
+ * lossless conversions. If they have several unrelated superinterfaces as
+ * their most specific common type, or the types themselves are completely
+ * unrelated interfaces, {@link java.lang.Object} is returned.
+ */
+ public static Class getCommonLosslessConversionType(final Class c1, final Class c2) {
+ if(c1 == c2) {
+ return c1;
+ } else if (c1 == void.class || c2 == void.class) {
+ return Object.class;
+ } else if(TypeUtilities.isConvertibleWithoutLoss(c2, c1)) {
+ return c1;
+ } else if(TypeUtilities.isConvertibleWithoutLoss(c1, c2)) {
+ return c2;
+ } else if(c1.isPrimitive() && c2.isPrimitive()) {
+ if((c1 == byte.class && c2 == char.class) || (c1 == char.class && c2 == byte.class)) {
+ // byte + char = int
+ return int.class;
+ } else if((c1 == short.class && c2 == char.class) || (c1 == char.class && c2 == short.class)) {
+ // short + char = int
+ return int.class;
+ } else if((c1 == int.class && c2 == float.class) || (c1 == float.class && c2 == int.class)) {
+ // int + float = double
+ return double.class;
+ }
+ }
+ // For all other cases. This will handle long + (float|double) = Number case as well as boolean + anything = Object case too.
+ return getMostSpecificCommonTypeUnequalNonprimitives(c1, c2);
+ }
+
+ private static Class getMostSpecificCommonTypeUnequalNonprimitives(final Class c1, final Class c2) {
+ final Class npc1 = c1.isPrimitive() ? TypeUtilities.getWrapperType(c1) : c1;
+ final Class npc2 = c2.isPrimitive() ? TypeUtilities.getWrapperType(c2) : c2;
+ final Set> a1 = getAssignables(npc1, npc2);
+ final Set> a2 = getAssignables(npc2, npc1);
+ a1.retainAll(a2);
+ if(a1.isEmpty()) {
+ // Can happen when at least one of the arguments is an interface,
+ // as they don't have Object at the root of their hierarchy.
+ return Object.class;
+ }
+ // Gather maximally specific elements. Yes, there can be more than one
+ // thank to interfaces. I.e., if you call this method for String.class
+ // and Number.class, you'll have Comparable, Serializable, and Object
+ // as maximal elements.
+ final List> max = new ArrayList<>();
+ outer: for(final Class clazz: a1) {
+ for(final Iterator> maxiter = max.iterator(); maxiter.hasNext();) {
+ final Class maxClazz = maxiter.next();
+ if(TypeUtilities.isSubtype(maxClazz, clazz)) {
+ // It can't be maximal, if there's already a more specific
+ // maximal than it.
+ continue outer;
+ }
+ if(TypeUtilities.isSubtype(clazz, maxClazz)) {
+ // If it's more specific than a currently maximal element,
+ // that currently maximal is no longer a maximal.
+ maxiter.remove();
+ }
+ }
+ // If we get here, no current maximal is more specific than the
+ // current class, so it is considered maximal as well
+ max.add(clazz);
+ }
+ if(max.size() > 1) {
+ return Object.class;
+ }
+ return max.get(0);
+ }
+
+ private static Set> getAssignables(final Class c1, final Class c2) {
+ final Set> s = new HashSet<>();
+ collectAssignables(c1, c2, s);
+ return s;
+ }
+
+ private static void collectAssignables(final Class c1, final Class c2, final Set> s) {
+ if(c1.isAssignableFrom(c2)) {
+ s.add(c1);
+ }
+ final Class sc = c1.getSuperclass();
+ if(sc != null) {
+ collectAssignables(sc, c2, s);
+ }
+ final Class[] itf = c1.getInterfaces();
+ for(int i = 0; i < itf.length; ++i) {
+ collectAssignables(itf[i], c2, s);
+ }
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/ConversionComparator.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/ConversionComparator.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.linker;
+
+
+/**
+ * Optional interface to be implemented by {@link GuardingTypeConverterFactory}
+ * implementers. Language-specific conversions can cause increased overloaded
+ * method resolution ambiguity, as many methods can become applicable because of
+ * additional conversions. The static way of selecting the "most specific"
+ * method will fail more often, because there will be multiple maximally
+ * specific method with unrelated signatures. In these cases, language runtimes
+ * can be asked to resolve the ambiguity by expressing preferences for one
+ * conversion over the other.
+ */
+public interface ConversionComparator {
+ /**
+ * Enumeration of possible outcomes of comparing one conversion to another.
+ */
+ enum Comparison {
+ /** The conversions cannot be compared. **/
+ INDETERMINATE,
+ /** The first conversion is better than the second one. **/
+ TYPE_1_BETTER,
+ /** The second conversion is better than the first one. **/
+ TYPE_2_BETTER,
+ }
+
+ /**
+ * Determines which of the two target types is the preferred conversion
+ * target from a source type.
+ * @param sourceType the source type.
+ * @param targetType1 one potential target type
+ * @param targetType2 another potential target type.
+ * @return one of Comparison constants that establish which - if any - of
+ * the target types is preferred for the conversion.
+ */
+ public Comparison compareConversion(Class sourceType, Class targetType1, Class targetType2);
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/GuardedInvocation.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/GuardedInvocation.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,483 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.linker;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import java.lang.invoke.SwitchPoint;
+import java.util.List;
+import java.util.Objects;
+import java.util.function.Supplier;
+import jdk.dynalink.CallSiteDescriptor;
+import jdk.dynalink.linker.support.Guards;
+
+/**
+ * Represents a conditionally valid method handle. Usually produced as a return
+ * value of
+ * {@link GuardingDynamicLinker#getGuardedInvocation(LinkRequest, LinkerServices)}
+ * and
+ * {@link GuardingTypeConverterFactory#convertToType(Class, Class, Supplier)}.
+ * It is an immutable tuple of an invocation method handle, a guard method
+ * handle that defines the applicability of the invocation handle, zero or more
+ * switch points that can be used for external invalidation of the invocation
+ * handle, and an exception type that if thrown during an invocation of the
+ * method handle also invalidates it. The invocation handle is suitable for
+ * invocation if the guard handle returns true for its arguments, and as long
+ * as any of the switch points are not invalidated, and as long as it does not
+ * throw an exception of the designated type. The guard, the switch points, and
+ * the exception type are all optional (a guarded invocation having none of them
+ * is unconditionally valid).
+ */
+public class GuardedInvocation {
+ private final MethodHandle invocation;
+ private final MethodHandle guard;
+ private final Class exception;
+ private final SwitchPoint[] switchPoints;
+
+ /**
+ * Creates a new unconditional guarded invocation. It is unconditional as it
+ * has no invalidations.
+ *
+ * @param invocation the method handle representing the invocation. Must not
+ * be null.
+ * @throws NullPointerException if invocation is null.
+ */
+ public GuardedInvocation(final MethodHandle invocation) {
+ this(invocation, null, (SwitchPoint)null, null);
+ }
+
+ /**
+ * Creates a new guarded invocation, with a guard method handle.
+ *
+ * @param invocation the method handle representing the invocation. Must not
+ * be null.
+ * @param guard the method handle representing the guard. Must have be
+ * compatible with the {@code invocation} handle as per
+ * {@link MethodHandles#guardWithTest(MethodHandle, MethodHandle, MethodHandle)}.
+ * For some useful guards, check out the {@link Guards} class. It can be
+ * null to represent an unconditional invocation.
+ * @throws NullPointerException if invocation is null.
+ */
+ public GuardedInvocation(final MethodHandle invocation, final MethodHandle guard) {
+ this(invocation, guard, (SwitchPoint)null, null);
+ }
+
+ /**
+ * Creates a new guarded invocation that can be invalidated by a switch
+ * point.
+ *
+ * @param invocation the method handle representing the invocation. Must
+ * not be null.
+ * @param switchPoint the optional switch point that can be used to
+ * invalidate this linkage. It can be null. If it is null, this represents
+ * an unconditional invocation.
+ * @throws NullPointerException if invocation is null.
+ */
+ public GuardedInvocation(final MethodHandle invocation, final SwitchPoint switchPoint) {
+ this(invocation, null, switchPoint, null);
+ }
+
+ /**
+ * Creates a new guarded invocation, with both a guard method handle and a
+ * switch point that can be used to invalidate it.
+ *
+ * @param invocation the method handle representing the invocation. Must
+ * not be null.
+ * @param guard the method handle representing the guard. Must have be
+ * compatible with the {@code invocation} handle as per
+ * {@link MethodHandles#guardWithTest(MethodHandle, MethodHandle, MethodHandle)}.
+ * For some useful guards, check out the {@link Guards} class. It can be
+ * null. If both it and the switch point are null, this represents an
+ * unconditional invocation.
+ * @param switchPoint the optional switch point that can be used to
+ * invalidate this linkage.
+ * @throws NullPointerException if invocation is null.
+ */
+ public GuardedInvocation(final MethodHandle invocation, final MethodHandle guard, final SwitchPoint switchPoint) {
+ this(invocation, guard, switchPoint, null);
+ }
+
+ /**
+ * Creates a new guarded invocation, with a guard method handle, a
+ * switch point that can be used to invalidate it, and an exception that if
+ * thrown when invoked also invalidates it.
+ *
+ * @param invocation the method handle representing the invocation. Must not
+ * be null.
+ * @param guard the method handle representing the guard. Must have be
+ * compatible with the {@code invocation} handle as per
+ * {@link MethodHandles#guardWithTest(MethodHandle, MethodHandle, MethodHandle)}.
+ * For some useful guards, check out the {@link Guards} class. It can be
+ * null. If it and the switch point and the exception are all null, this
+ * represents an unconditional invocation.
+ * @param switchPoint the optional switch point that can be used to
+ * invalidate this linkage.
+ * @param exception the optional exception type that is when thrown by the
+ * invocation also invalidates it.
+ * @throws NullPointerException if invocation is null.
+ */
+ public GuardedInvocation(final MethodHandle invocation, final MethodHandle guard, final SwitchPoint switchPoint, final Class exception) {
+ this.invocation = Objects.requireNonNull(invocation);
+ this.guard = guard;
+ this.switchPoints = switchPoint == null ? null : new SwitchPoint[] { switchPoint };
+ this.exception = exception;
+ }
+
+ /**
+ * Creates a new guarded invocation, with a guard method handle, any number
+ * of switch points that can be used to invalidate it, and an exception that
+ * if thrown when invoked also invalidates it.
+ *
+ * @param invocation the method handle representing the invocation. Must not
+ * be null.
+ * @param guard the method handle representing the guard. Must have be
+ * compatible with the {@code invocation} handle as per
+ * {@link MethodHandles#guardWithTest(MethodHandle, MethodHandle, MethodHandle)}.
+ * For some useful guards, check out the {@link Guards} class. It can be
+ * null. If it and the exception are both null, and no switch points were
+ * specified, this represents an unconditional invocation.
+ * @param switchPoints optional switch points that can be used to
+ * invalidate this linkage.
+ * @param exception the optional exception type that is when thrown by the
+ * invocation also invalidates it.
+ * @throws NullPointerException if invocation is null.
+ */
+ public GuardedInvocation(final MethodHandle invocation, final MethodHandle guard, final SwitchPoint[] switchPoints, final Class exception) {
+ this.invocation = Objects.requireNonNull(invocation);
+ this.guard = guard;
+ this.switchPoints = switchPoints == null ? null : switchPoints.clone();
+ this.exception = exception;
+ }
+
+ /**
+ * Returns the invocation method handle.
+ *
+ * @return the invocation method handle. It will never be null.
+ */
+ public MethodHandle getInvocation() {
+ return invocation;
+ }
+
+ /**
+ * Returns the guard method handle.
+ *
+ * @return the guard method handle. Can be null.
+ */
+ public MethodHandle getGuard() {
+ return guard;
+ }
+
+ /**
+ * Returns the switch points that can be used to invalidate the linkage of
+ * this invocation handle.
+ *
+ * @return the switch points that can be used to invalidate the linkage of
+ * this invocation handle. Can be null.
+ */
+ public SwitchPoint[] getSwitchPoints() {
+ return switchPoints == null ? null : switchPoints.clone();
+ }
+
+ /**
+ * Returns the exception type that if thrown by the invocation should
+ * invalidate the linkage of this guarded invocation.
+ *
+ * @return the exception type that if thrown should be used to invalidate
+ * the linkage. Can be null.
+ */
+ public Class getException() {
+ return exception;
+ }
+
+ /**
+ * Returns true if and only if this guarded invocation has at least one
+ * invalidated switch point.
+ * @return true if and only if this guarded invocation has at least one
+ * invalidated switch point.
+ */
+ public boolean hasBeenInvalidated() {
+ if (switchPoints == null) {
+ return false;
+ }
+ for (final SwitchPoint sp : switchPoints) {
+ if (sp.hasBeenInvalidated()) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ /**
+ * Creates a new guarded invocation with different methods, preserving the switch point.
+ *
+ * @param newInvocation the new invocation
+ * @param newGuard the new guard
+ * @return a new guarded invocation with the replaced methods and the same switch point as this invocation.
+ */
+ public GuardedInvocation replaceMethods(final MethodHandle newInvocation, final MethodHandle newGuard) {
+ return new GuardedInvocation(newInvocation, newGuard, switchPoints, exception);
+ }
+
+ /**
+ * Create a new guarded invocation with an added switch point.
+ * @param newSwitchPoint new switch point. Can be null in which case this
+ * method return the current guarded invocation with no changes.
+ * @return a guarded invocation with the added switch point.
+ */
+ public GuardedInvocation addSwitchPoint(final SwitchPoint newSwitchPoint) {
+ if (newSwitchPoint == null) {
+ return this;
+ }
+
+ final SwitchPoint[] newSwitchPoints;
+ if (switchPoints != null) {
+ newSwitchPoints = new SwitchPoint[switchPoints.length + 1];
+ System.arraycopy(switchPoints, 0, newSwitchPoints, 0, switchPoints.length);
+ newSwitchPoints[switchPoints.length] = newSwitchPoint;
+ } else {
+ newSwitchPoints = new SwitchPoint[] { newSwitchPoint };
+ }
+
+ return new GuardedInvocation(invocation, guard, newSwitchPoints, exception);
+ }
+
+ private GuardedInvocation replaceMethodsOrThis(final MethodHandle newInvocation, final MethodHandle newGuard) {
+ if (newInvocation == invocation && newGuard == guard) {
+ return this;
+ }
+ return replaceMethods(newInvocation, newGuard);
+ }
+
+ /**
+ * Changes the type of the invocation, as if
+ * {@link MethodHandle#asType(MethodType)} was applied to its invocation
+ * and its guard, if it has one (with return type changed to boolean, and
+ * parameter count potentially truncated for the guard). If the invocation
+ * already is of the required type, returns this object.
+ * @param newType the new type of the invocation.
+ * @return a guarded invocation with the new type applied to it.
+ */
+ public GuardedInvocation asType(final MethodType newType) {
+ return replaceMethodsOrThis(invocation.asType(newType), guard == null ? null : Guards.asType(guard, newType));
+ }
+
+ /**
+ * Changes the type of the invocation, as if
+ * {@link LinkerServices#asType(MethodHandle, MethodType)} was applied to
+ * its invocation and its guard, if it has one (with return type changed to
+ * boolean, and parameter count potentially truncated for the guard). If the
+ * invocation already is of the required type, returns this object.
+ * @param linkerServices the linker services to use for the conversion
+ * @param newType the new type of the invocation.
+ * @return a guarded invocation with the new type applied to it.
+ */
+ public GuardedInvocation asType(final LinkerServices linkerServices, final MethodType newType) {
+ return replaceMethodsOrThis(linkerServices.asType(invocation, newType), guard == null ? null :
+ Guards.asType(linkerServices, guard, newType));
+ }
+
+ /**
+ * Changes the type of the invocation, as if
+ * {@link LinkerServices#asTypeLosslessReturn(MethodHandle, MethodType)} was
+ * applied to its invocation and
+ * {@link LinkerServices#asType(MethodHandle, MethodType)} applied to its
+ * guard, if it has one (with return type changed to boolean, and parameter
+ * count potentially truncated for the guard). If the invocation doesn't
+ * change its type, returns this object.
+ * @param linkerServices the linker services to use for the conversion
+ * @param newType the new type of the invocation.
+ * @return a guarded invocation with the new type applied to it.
+ */
+ public GuardedInvocation asTypeSafeReturn(final LinkerServices linkerServices, final MethodType newType) {
+ return replaceMethodsOrThis(linkerServices.asTypeLosslessReturn(invocation, newType), guard == null ? null :
+ Guards.asType(linkerServices, guard, newType));
+ }
+
+ /**
+ * Changes the type of the invocation, as if
+ * {@link MethodHandle#asType(MethodType)} was applied to its invocation
+ * and its guard, if it has one (with return type changed to boolean for
+ * guard). If the invocation already is of the required type, returns this
+ * object.
+ * @param desc a call descriptor whose method type is adapted.
+ * @return a guarded invocation with the new type applied to it.
+ */
+ public GuardedInvocation asType(final CallSiteDescriptor desc) {
+ return asType(desc.getMethodType());
+ }
+
+ /**
+ * Applies argument filters to both the invocation and the guard (if there
+ * is one) with {@link MethodHandles#filterArguments(MethodHandle, int, MethodHandle...)}.
+ * @param pos the position of the first argument being filtered
+ * @param filters the argument filters
+ * @return a filtered invocation
+ */
+ public GuardedInvocation filterArguments(final int pos, final MethodHandle... filters) {
+ return replaceMethods(MethodHandles.filterArguments(invocation, pos, filters), guard == null ? null :
+ MethodHandles.filterArguments(guard, pos, filters));
+ }
+
+ /**
+ * Makes an invocation that drops arguments in both the invocation and the
+ * guard (if there is one) with {@link MethodHandles#dropArguments(MethodHandle, int, List)}.
+ * @param pos the position of the first argument being dropped
+ * @param valueTypes the types of the values being dropped
+ * @return an invocation that drops arguments
+ */
+ public GuardedInvocation dropArguments(final int pos, final List> valueTypes) {
+ return replaceMethods(MethodHandles.dropArguments(invocation, pos, valueTypes), guard == null ? null :
+ MethodHandles.dropArguments(guard, pos, valueTypes));
+ }
+
+ /**
+ * Makes an invocation that drops arguments in both the invocation and the
+ * guard (if there is one) with {@link MethodHandles#dropArguments(MethodHandle, int, Class...)}.
+ * @param pos the position of the first argument being dropped
+ * @param valueTypes the types of the values being dropped
+ * @return an invocation that drops arguments
+ */
+ public GuardedInvocation dropArguments(final int pos, final Class... valueTypes) {
+ return replaceMethods(MethodHandles.dropArguments(invocation, pos, valueTypes), guard == null ? null :
+ MethodHandles.dropArguments(guard, pos, valueTypes));
+ }
+
+
+ /**
+ * Composes the invocation, guard, switch points, and the exception into a
+ * composite method handle that knows how to fall back when the guard fails
+ * or the invocation is invalidated.
+ * @param fallback the fallback method handle for when a switch point is
+ * invalidated, a guard returns false, or invalidating exception is thrown.
+ * @return a composite method handle.
+ */
+ public MethodHandle compose(final MethodHandle fallback) {
+ return compose(fallback, fallback, fallback);
+ }
+
+ /**
+ * Composes the invocation, guard, switch points, and the exception into a
+ * composite method handle that knows how to fall back when the guard fails
+ * or the invocation is invalidated.
+ * @param switchpointFallback the fallback method handle in case a switch
+ * point is invalidated.
+ * @param guardFallback the fallback method handle in case guard returns
+ * false.
+ * @param catchFallback the fallback method in case the exception handler
+ * triggers.
+ * @return a composite method handle.
+ */
+ public MethodHandle compose(final MethodHandle guardFallback, final MethodHandle switchpointFallback, final MethodHandle catchFallback) {
+ final MethodHandle guarded =
+ guard == null ?
+ invocation :
+ MethodHandles.guardWithTest(
+ guard,
+ invocation,
+ guardFallback);
+
+ final MethodHandle catchGuarded =
+ exception == null ?
+ guarded :
+ MethodHandles.catchException(
+ guarded,
+ exception,
+ MethodHandles.dropArguments(
+ catchFallback,
+ 0,
+ exception));
+
+ if (switchPoints == null) {
+ return catchGuarded;
+ }
+
+ MethodHandle spGuarded = catchGuarded;
+ for (final SwitchPoint sp : switchPoints) {
+ spGuarded = sp.guardWithTest(spGuarded, switchpointFallback);
+ }
+
+ return spGuarded;
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/GuardedInvocationTransformer.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/GuardedInvocationTransformer.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.linker;
+
+import jdk.dynalink.DynamicLinkerFactory;
+
+/**
+ * Interface for objects that are used to transform one guarded invocation into
+ * another one. Typical usage is for implementing
+ * {@link DynamicLinkerFactory#setPrelinkTransformer(GuardedInvocationTransformer)
+ * pre-link transformers}.
+ */
+@FunctionalInterface
+public interface GuardedInvocationTransformer {
+ /**
+ * Given a guarded invocation, return either the same or potentially
+ * different guarded invocation.
+ * @param inv the original guarded invocation.
+ * @param linkRequest the link request for which the invocation was
+ * generated (usually by some linker).
+ * @param linkerServices the linker services that can be used during
+ * creation of a new invocation.
+ * @return either the passed guarded invocation or a different one, with
+ * the difference usually determined based on information in the link
+ * request and the differing invocation created with the assistance of the
+ * linker services. Whether or not {@code null} is an accepted return value
+ * is dependent on the user of the filter.
+ * @throws NullPointerException is allowed to be thrown by implementations
+ * if any of the passed arguments is null.
+ */
+ public GuardedInvocation filter(GuardedInvocation inv, LinkRequest linkRequest, LinkerServices linkerServices);
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/GuardingDynamicLinker.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/GuardingDynamicLinker.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,142 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.linker;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodType;
+import java.util.List;
+import jdk.dynalink.DynamicLinkerFactory;
+
+/**
+ * The base interface for language-specific dynamic linkers. Such linkers
+ * always have to produce method handles with guards, as the validity of the
+ * method handle for calls at a call site inevitably depends on some condition
+ * (at the very least, it depends on the receiver belonging to the language
+ * runtime of the linker). Language runtime implementors will normally implement
+ * the linking logic for their own language as one or more
+ * {@link GuardingDynamicLinker} classes. They will typically set them as
+ * {@link DynamicLinkerFactory#setPrioritizedLinkers(List) prioritized linkers}
+ * in the {@code DynamicLinkerFactory} they configure for themselves, and maybe also
+ * set some as {@link DynamicLinkerFactory#setFallbackLinkers(List) fallback
+ * linkers} to handle language-specific "property not found" etc. conditions.
+ *
+ * Consider implementing {@link TypeBasedGuardingDynamicLinker} interface
+ * instead of this interface for those linkers that are based on the Java class
+ * of the objects. If you need to implement language-specific type conversions,
+ * have your {@code GuardingDynamicLinker} also implement the
+ * {@link GuardingTypeConverterFactory} interface.
+ *
+ * Languages can export linkers to other language runtimes for
+ * {@link DynamicLinkerFactory#setClassLoader(ClassLoader) automatic discovery}
+ * using a {@link GuardingDynamicLinkerExporter}.
+ */
+public interface GuardingDynamicLinker {
+ /**
+ * Creates a guarded invocation appropriate for a particular invocation with
+ * the specified arguments at a call site.
+ *
+ * @param linkRequest the object describing the request for linking a
+ * particular invocation
+ * @param linkerServices linker services
+ * @return a guarded invocation with a method handle suitable for the
+ * arguments, as well as a guard condition that if fails should trigger
+ * relinking. Must return null if it can't resolve the invocation. If the
+ * returned invocation is unconditional (which is actually quite rare), the
+ * guard in the return value can be null. The invocation can also have any
+ * number of switch points for asynchronous invalidation of the linkage, as
+ * well as a {@link Throwable} subclass that describes an expected exception
+ * condition that also triggers relinking (often it is faster to rely on an
+ * infrequent but expected {@link ClassCastException} than on an always
+ * evaluated {@code instanceof} guard). While the linker must produce an
+ * invocation with parameter types matching those in the call site
+ * descriptor of the link request, it should not try to match the return
+ * type expected at the call site except when it can do it with only the
+ * conversions that lose neither precision nor magnitude, see
+ * {@link LinkerServices#asTypeLosslessReturn(MethodHandle, MethodType)} for
+ * further explanation.
+ * @throws Exception if the operation fails for whatever reason
+ */
+ public GuardedInvocation getGuardedInvocation(LinkRequest linkRequest, LinkerServices linkerServices)
+ throws Exception;
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/GuardingDynamicLinkerExporter.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/GuardingDynamicLinkerExporter.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.dynalink.linker;
+
+import java.security.Permission;
+import java.util.List;
+import java.util.ServiceLoader;
+import java.util.function.Supplier;
+import jdk.dynalink.DynamicLinkerFactory;
+
+/**
+ * A class acting as a supplier of guarding dynamic linkers that can be
+ * automatically loaded by other language runtimes. Language runtimes wishing
+ * to export their own linkers should subclass this class and implement the
+ * {@link #get()} method to return a list of exported linkers and declare the
+ * subclass in
+ * {@code /META-INF/services/jdk.dynalink.linker.GuardingDynamicLinkerExporter}
+ * resource of their distribution (typically, JAR file) so that dynamic linker
+ * factories can discover them using the {@link ServiceLoader} mechanism. Note
+ * that instantiating this class is tied to a security check for the
+ * {@code RuntimePermission("dynalink.exportLinkersAutomatically")} when a
+ * security manager is present, to ensure that only trusted runtimes can
+ * automatically export their linkers into other runtimes.
+ * @see DynamicLinkerFactory#setClassLoader(ClassLoader)
+ */
+public abstract class GuardingDynamicLinkerExporter implements Supplier> {
+ /**
+ * The name of the runtime permission for creating instances of this class.
+ * Granting this permission to a language runtime allows it to export its
+ * linkers for automatic loading into other language runtimes.
+ */
+ public static final String AUTOLOAD_PERMISSION_NAME = "dynalink.exportLinkersAutomatically";
+
+ private static final Permission AUTOLOAD_PERMISSION = new RuntimePermission(AUTOLOAD_PERMISSION_NAME);
+
+ /**
+ * Creates a new linker exporter. If there is a security manager installed
+ * checks for the
+ * {@code RuntimePermission("dynalink.exportLinkersAutomatically")} runtime
+ * permission. This ensures only language runtimes granted this permission
+ * will be allowed to export their linkers for automatic loading.
+ * @throws SecurityException if the necessary runtime permission is not
+ * granted.
+ */
+ protected GuardingDynamicLinkerExporter() {
+ final SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ sm.checkPermission(AUTOLOAD_PERMISSION);
+ }
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/GuardingTypeConverterFactory.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/GuardingTypeConverterFactory.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,147 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.linker;
+
+import java.lang.invoke.MethodHandles;
+import java.util.function.Supplier;
+import jdk.dynalink.CallSiteDescriptor;
+import jdk.dynalink.beans.BeansLinker;
+import jdk.dynalink.linker.support.TypeUtilities;
+
+/**
+ * Optional interface that can be implemented by {@link GuardingDynamicLinker}
+ * implementations to provide language-specific type conversion capabilities.
+ * Note that if you implement this interface, you will very likely want to
+ * implement {@link ConversionComparator} interface too, as your additional
+ * language-specific conversions, in absence of a strategy for prioritizing
+ * these conversions, will cause more ambiguity for {@link BeansLinker} in
+ * selecting the correct overload when trying to link to an overloaded Java
+ * method.
+ */
+public interface GuardingTypeConverterFactory {
+ /**
+ * Returns a guarded type conversion that receives a value of the specified
+ * source type and returns a value converted to the specified target type.
+ * Value types can be either primitives or reference types, including
+ * interfaces, so you can even provide converters for converting your
+ * language's objects to Java interfaces and classes by generating adapters
+ * for them.
+ *
+ * The type of the invocation is {@code targetType(sourceType)}, while the
+ * type of the guard is {@code boolean(sourceType)}. You are allowed to
+ * return unconditional invocations (with no guard) if the source type is
+ * specific to your runtime and your runtime only.
+ *
Note that this method will never be invoked for type conversions
+ * allowed by the JLS 5.3 "Method Invocation Conversion", see
+ * {@link TypeUtilities#isMethodInvocationConvertible(Class, Class)} for
+ * details. An implementation can assume it is never requested to produce a
+ * converter for these conversions.
+ *
Dynalink is at liberty to either cache some of the returned converters
+ * or to repeatedly request the converter factory to create the same
+ * conversion.
+ *
+ * @param sourceType source type
+ * @param targetType the target type.
+ * @param lookupSupplier a supplier for retrieving the lookup of the class
+ * on whose behalf a type converter is requested. When a converter is
+ * requested as part of linking an {@code invokedynamic} instruction the
+ * supplier will return the lookup passed to the bootstrap method, otherwise
+ * it will return the public lookup. A typical case where the lookup might
+ * be needed is when the converter creates a Java adapter class on the fly
+ * (e.g. to convert some object from the dynamic language into a Java
+ * interface for interoperability). Invoking the {@link Supplier#get()}
+ * method on the passed supplier will be subject to the same security checks
+ * as {@link CallSiteDescriptor#getLookup()}. An implementation should avoid
+ * retrieving the lookup if it is not needed so as to avoid the expense of
+ * {@code AccessController.doPrivileged} call.
+ * @return a guarded invocation that can take an object (if it passes guard)
+ * and return another object that is its representation coerced into the
+ * target type. In case the factory is certain it is unable to handle a
+ * conversion, it can return null. In case the factory is certain that it
+ * can always handle the conversion, it can return an unconditional
+ * invocation (one whose guard is null).
+ * @throws Exception if there was an error during creation of the converter
+ */
+ public GuardedInvocation convertToType(Class sourceType, Class targetType, Supplier lookupSupplier) throws Exception;
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/LinkRequest.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/LinkRequest.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,142 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.linker;
+
+import jdk.dynalink.CallSiteDescriptor;
+import jdk.dynalink.DynamicLinker;
+import jdk.dynalink.DynamicLinkerFactory;
+
+/**
+ * Represents a request to link a particular invocation at a particular call
+ * site. Instances of these requests will be constructed and passed to all
+ * {@link GuardingDynamicLinker} objects managed by the {@link DynamicLinker}
+ * that is trying to link the call site.
+ */
+public interface LinkRequest {
+ /**
+ * Returns the call site descriptor for the call site being linked.
+ *
+ * @return the call site descriptor for the call site being linked.
+ */
+ public CallSiteDescriptor getCallSiteDescriptor();
+
+ /**
+ * Returns the arguments for the invocation being linked. The returned array
+ * must be a clone; modifications to it must not affect the arguments in
+ * this request.
+ *
+ * @return the arguments for the invocation being linked.
+ */
+ public Object[] getArguments();
+
+ /**
+ * Returns the first argument for the invocation being linked; this is
+ * typically the receiver object. This is a shorthand for
+ * {@code getArguments()[0]} that also avoids the cloning of the arguments
+ * array.
+ *
+ * @return the receiver object.
+ */
+ public Object getReceiver();
+
+ /**
+ * Returns true if the call site is considered unstable, that is, it has been relinked more times than was
+ * specified in {@link DynamicLinkerFactory#setUnstableRelinkThreshold(int)}. Linkers should use this as a
+ * hint to prefer producing linkage that is more stable (its guard fails less frequently), even if that assumption
+ * causes a less effective version of an operation to be linked. This is just a hint, though, and linkers are
+ * allowed to ignore this property.
+ * @return true if the call site is considered unstable.
+ */
+ public boolean isCallSiteUnstable();
+
+ /**
+ * Returns a request identical to this one with call site descriptor and arguments replaced with the ones specified.
+ *
+ * @param callSiteDescriptor the new call site descriptor
+ * @param arguments the new arguments
+ * @return a new request identical to this one, except with the call site descriptor and arguments replaced with the
+ * specified ones.
+ */
+ public LinkRequest replaceArguments(CallSiteDescriptor callSiteDescriptor, Object... arguments);
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/LinkerServices.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/LinkerServices.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,220 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.linker;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import jdk.dynalink.DynamicLinker;
+import jdk.dynalink.DynamicLinkerFactory;
+import jdk.dynalink.linker.ConversionComparator.Comparison;
+import jdk.dynalink.linker.support.TypeUtilities;
+
+/**
+ * Interface for services provided to {@link GuardingDynamicLinker} instances by
+ * the {@link DynamicLinker} that owns them.
+ */
+public interface LinkerServices {
+ /**
+ * Similar to {@link MethodHandle#asType(MethodType)} except it also hooks
+ * in method handles produced by all available
+ * {@link GuardingTypeConverterFactory} implementations, providing for
+ * language-specific type coercing of parameters. It will apply
+ * {@link MethodHandle#asType(MethodType)} for all primitive-to-primitive,
+ * wrapper-to-primitive, primitive-to-wrapper conversions as well as for all
+ * upcasts. For all other conversions, it'll insert
+ * {@link MethodHandles#filterArguments(MethodHandle, int, MethodHandle...)}
+ * with composite filters provided by {@link GuardingTypeConverterFactory}
+ * implementations.
+ *
+ * @param handle target method handle
+ * @param fromType the types of source arguments
+ * @return a method handle that is a suitable combination of
+ * {@link MethodHandle#asType(MethodType)},
+ * {@link MethodHandles#filterArguments(MethodHandle, int, MethodHandle...)},
+ * and {@link MethodHandles#filterReturnValue(MethodHandle, MethodHandle)}
+ * with {@link GuardingTypeConverterFactory}-produced type converters as
+ * filters.
+ */
+ public MethodHandle asType(MethodHandle handle, MethodType fromType);
+
+ /**
+ * Similar to {@link #asType(MethodHandle, MethodType)} except it treats
+ * return value type conversion specially. It only converts the return type
+ * of the method handle when it can be done using a conversion that loses
+ * neither precision nor magnitude, otherwise it leaves it unchanged. These
+ * are the only return value conversions that should be performed by
+ * individual language-specific linkers, and
+ * {@link DynamicLinkerFactory#setPrelinkTransformer(GuardedInvocationTransformer)
+ * pre-link transformer of the dynamic linker} should implement the strategy
+ * for dealing with potentially lossy return type conversions in a manner
+ * specific to the language runtime where the call site is located.
+ *
+ * @param handle target method handle
+ * @param fromType the types of source arguments
+ * @return a method handle that is a suitable combination of
+ * {@link MethodHandle#asType(MethodType)}, and
+ * {@link MethodHandles#filterArguments(MethodHandle, int, MethodHandle...)}
+ * with {@link GuardingTypeConverterFactory}-produced type converters as filters.
+ */
+ public default MethodHandle asTypeLosslessReturn(final MethodHandle handle, final MethodType fromType) {
+ final Class handleReturnType = handle.type().returnType();
+ return asType(handle, TypeUtilities.isConvertibleWithoutLoss(handleReturnType, fromType.returnType()) ?
+ fromType : fromType.changeReturnType(handleReturnType));
+ }
+
+ /**
+ * Given a source and target type, returns a method handle that converts
+ * between them. Never returns null; in worst case it will return an
+ * identity conversion (that might fail for some values at runtime). You
+ * rarely need to use this method directly and should mostly rely on
+ * {@link #asType(MethodHandle, MethodType)} instead. This method is needed
+ * when you need to reuse existing type conversion machinery outside the
+ * context of processing a link request.
+ * @param sourceType the type to convert from
+ * @param targetType the type to convert to
+ * @return a method handle performing the conversion.
+ */
+ public MethodHandle getTypeConverter(Class sourceType, Class targetType);
+
+ /**
+ * Returns true if there might exist a conversion between the requested
+ * types (either an automatic JVM conversion, or one provided by any
+ * available {@link GuardingTypeConverterFactory}), or false if there
+ * definitely does not exist a conversion between the requested types. Note
+ * that returning true does not guarantee that the conversion will succeed
+ * at runtime for all values (especially if the "from" or "to" types are
+ * sufficiently generic), but returning false guarantees that it would fail.
+ *
+ * @param from the source type for the conversion
+ * @param to the target type for the conversion
+ * @return true if there can be a conversion, false if there can not.
+ */
+ public boolean canConvert(Class from, Class to);
+
+ /**
+ * Creates a guarded invocation delegating back to the {@link DynamicLinker}
+ * that exposes this linker services object. The dynamic linker will then
+ * itself delegate the linking to all of its managed
+ * {@link GuardingDynamicLinker}s including potentially this one if no
+ * linker responds earlier, so beware of infinite recursion. You'll
+ * typically craft the link request so that it will be different than the
+ * one you are currently trying to link.
+ *
+ * @param linkRequest a request for linking the invocation
+ * @return a guarded invocation linked by some of the guarding dynamic
+ * linkers managed by the top-level dynamic linker. Can be null if no
+ * available linker is able to link the invocation. You will typically use
+ * the elements of the returned invocation to compose your own invocation.
+ * @throws Exception in case the top-level linker throws an exception
+ */
+ public GuardedInvocation getGuardedInvocation(LinkRequest linkRequest) throws Exception;
+
+ /**
+ * Determines which of the two type conversions from a source type to the
+ * two target types is preferred. This is used for dynamic overloaded method
+ * resolution. If the source type is convertible to exactly one target type
+ * with a method invocation conversion, it is chosen, otherwise available
+ * {@link ConversionComparator}s are consulted.
+ * @param sourceType the source type.
+ * @param targetType1 one potential target type
+ * @param targetType2 another potential target type.
+ * @return one of Comparison constants that establish which – if any
+ * – of the target types is preferable for the conversion.
+ */
+ public Comparison compareConversion(Class sourceType, Class targetType1, Class targetType2);
+
+ /**
+ * Modifies the method handle so that any parameters that can receive
+ * potentially internal language runtime objects will have a filter added on
+ * them to prevent them from escaping, potentially by wrapping them. It can
+ * also potentially add an unwrapping filter to the return value. Basically
+ * transforms the method handle using the transformer configured by
+ * {@link DynamicLinkerFactory#setInternalObjectsFilter(MethodHandleTransformer)}.
+ * @param target the target method handle
+ * @return a method handle with parameters and/or return type potentially
+ * filtered for wrapping and unwrapping.
+ */
+ public MethodHandle filterInternalObjects(final MethodHandle target);
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/MethodHandleTransformer.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/MethodHandleTransformer.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2015 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.linker;
+
+import java.lang.invoke.MethodHandle;
+import jdk.dynalink.DynamicLinkerFactory;
+
+/**
+ * A generic interface describing operations that transform method handles.
+ * Typical usage is for implementing
+ * {@link DynamicLinkerFactory#setInternalObjectsFilter(MethodHandleTransformer)
+ * internal objects filters}.
+ */
+@FunctionalInterface
+public interface MethodHandleTransformer {
+ /**
+ * Transforms a method handle.
+ * @param target the method handle being transformed.
+ * @return transformed method handle.
+ */
+ public MethodHandle transform(final MethodHandle target);
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/MethodTypeConversionStrategy.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/MethodTypeConversionStrategy.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2014 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.linker;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodType;
+import jdk.dynalink.DynamicLinkerFactory;
+
+/**
+ * Interface for objects representing a strategy for converting a method handle
+ * to a new type. Typical usage is for customizing a language runtime's handling
+ * of
+ * {@link DynamicLinkerFactory#setAutoConversionStrategy(MethodTypeConversionStrategy)
+ * method invocation conversions}.
+ */
+@FunctionalInterface
+public interface MethodTypeConversionStrategy {
+ /**
+ * Converts a method handle to a new type.
+ * @param target target method handle
+ * @param newType new type
+ * @return target converted to the new type.
+ */
+ public MethodHandle asType(final MethodHandle target, final MethodType newType);
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/TypeBasedGuardingDynamicLinker.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/TypeBasedGuardingDynamicLinker.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.linker;
+
+import jdk.dynalink.linker.support.CompositeTypeBasedGuardingDynamicLinker;
+
+/**
+ * A guarding dynamic linker that can determine whether it can link the call site solely based on the type of the first
+ * argument at linking invocation time. (The first argument is usually the receiver). Most language-specific
+ * linkers will fall into this category, as they recognize their native objects as Java objects of classes implementing
+ * a specific language-native interface or superclass. The linker mechanism can optimize the dispatch for these linkers,
+ * see {@link CompositeTypeBasedGuardingDynamicLinker}.
+ */
+public interface TypeBasedGuardingDynamicLinker extends GuardingDynamicLinker {
+ /**
+ * Returns true if the linker can link an invocation where the first argument (receiver) is of the specified type.
+ *
+ * @param type the type to link
+ * @return true if the linker can link calls for the receiver type, or false otherwise.
+ */
+ public boolean canLinkType(Class type);
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/package-info.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/package-info.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/**
+ *
+ * Contains interfaces and classes needed by language runtimes to implement
+ * their own language-specific object models and type conversions. The main
+ * entry point is the
+ * {@link jdk.dynalink.linker.GuardingDynamicLinker} interface. It needs to be
+ * implemented in order to provide linking for the runtime's own object model.
+ * A language runtime can have more than one guarding dynamic linker
+ * implementation. When a runtime is configuring Dynalink for itself, it will
+ * normally set these guarding linkers as the prioritized linkers in its
+ * {@link jdk.dynalink.DynamicLinkerFactory} (and maybe some of them as fallback
+ * linkers, for e.g. handling "method not found" and similar errors in a
+ * language-specific manner if no other linker managed to handle the operation.)
+ *
+ * A language runtime that wishes to make at least some of its linkers available
+ * to other language runtimes for interoperability will need to declare the
+ * class names of those linkers in
+ * {@code /META-INF/services/jdk.dynalink.linker.GuardingDynamicLinker} file in
+ * its distribution (typically, JAR file).
+ *
+ * Most language runtimes will be able to implement their own linking logic by
+ * implementing {@link jdk.dynalink.linker.TypeBasedGuardingDynamicLinker}
+ * instead of {@link jdk.dynalink.linker.GuardingDynamicLinker}; it allows for
+ * faster type-based linking dispatch.
+ *
+ * Language runtimes that allow type conversions other than those provided by
+ * Java will need to have their guarding dynamic linker (or linkers) also
+ * implement the {@link jdk.dynalink.linker.GuardingTypeConverterFactory}
+ * interface to provide the logic for these conversions.
+ *
+ * @since 1.9
+ */
+@jdk.Exported
+package jdk.dynalink.linker;
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/support/CompositeGuardingDynamicLinker.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/support/CompositeGuardingDynamicLinker.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,139 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.linker.support;
+
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Objects;
+import jdk.dynalink.linker.GuardedInvocation;
+import jdk.dynalink.linker.GuardingDynamicLinker;
+import jdk.dynalink.linker.LinkRequest;
+import jdk.dynalink.linker.LinkerServices;
+
+/**
+ * A {@link GuardingDynamicLinker} that delegates sequentially to a list of
+ * other guarding dynamic linkers in its
+ * {@link #getGuardedInvocation(LinkRequest, LinkerServices)}.
+ */
+public class CompositeGuardingDynamicLinker implements GuardingDynamicLinker {
+
+ private final GuardingDynamicLinker[] linkers;
+
+ /**
+ * Creates a new composite linker.
+ *
+ * @param linkers a list of component linkers.
+ * @throws NullPointerException if {@code linkers} or any of its elements
+ * are null.
+ */
+ public CompositeGuardingDynamicLinker(final Iterable linkers) {
+ final List l = new LinkedList<>();
+ for(final GuardingDynamicLinker linker: linkers) {
+ l.add(Objects.requireNonNull(linker));
+ }
+ this.linkers = l.toArray(new GuardingDynamicLinker[l.size()]);
+ }
+
+ /**
+ * Delegates the call to its component linkers. The first non-null value
+ * returned from a component linker is returned. If no component linker
+ * returns a non-null invocation, null is returned.
+ * @param linkRequest the object describing the request for linking a
+ * particular invocation
+ * @param linkerServices linker services
+ * @return the first non-null return value from a component linker, or null
+ * if none of the components returned a non-null.
+ */
+ @Override
+ public GuardedInvocation getGuardedInvocation(final LinkRequest linkRequest, final LinkerServices linkerServices)
+ throws Exception {
+ for(final GuardingDynamicLinker linker: linkers) {
+ final GuardedInvocation invocation = linker.getGuardedInvocation(linkRequest, linkerServices);
+ if(invocation != null) {
+ return invocation;
+ }
+ }
+ return null;
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/support/CompositeTypeBasedGuardingDynamicLinker.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/support/CompositeTypeBasedGuardingDynamicLinker.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,237 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.linker.support;
+
+import java.util.Collections;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Objects;
+import jdk.dynalink.linker.GuardedInvocation;
+import jdk.dynalink.linker.GuardingDynamicLinker;
+import jdk.dynalink.linker.LinkRequest;
+import jdk.dynalink.linker.LinkerServices;
+import jdk.dynalink.linker.TypeBasedGuardingDynamicLinker;
+
+/**
+ * A composite type-based guarding dynamic linker. When a receiver of a not yet
+ * seen class is encountered, all linkers are queried sequentially on their
+ * {@link TypeBasedGuardingDynamicLinker#canLinkType(Class)} method. The linkers
+ * returning true are then bound to the class, and next time a receiver of same
+ * type is encountered, the linking is delegated to those linkers only, speeding
+ * up dispatch.
+ */
+public class CompositeTypeBasedGuardingDynamicLinker implements TypeBasedGuardingDynamicLinker {
+ // Using a separate static class instance so there's no strong reference from the class value back to the composite
+ // linker.
+ private static class ClassToLinker extends ClassValue> {
+ private static final List NO_LINKER = Collections.emptyList();
+ private final TypeBasedGuardingDynamicLinker[] linkers;
+ private final List[] singletonLinkers;
+
+ @SuppressWarnings({"unchecked", "rawtypes"})
+ ClassToLinker(final TypeBasedGuardingDynamicLinker[] linkers) {
+ this.linkers = linkers;
+ singletonLinkers = new List[linkers.length];
+ for(int i = 0; i < linkers.length; ++i) {
+ singletonLinkers[i] = Collections.singletonList(linkers[i]);
+ }
+ }
+
+ @SuppressWarnings("fallthrough")
+ @Override
+ protected List computeValue(final Class clazz) {
+ List list = NO_LINKER;
+ for(int i = 0; i < linkers.length; ++i) {
+ final TypeBasedGuardingDynamicLinker linker = linkers[i];
+ if(linker.canLinkType(clazz)) {
+ switch(list.size()) {
+ case 0: {
+ list = singletonLinkers[i];
+ break;
+ }
+ case 1: {
+ list = new LinkedList<>(list);
+ }
+ default: {
+ list.add(linker);
+ }
+ }
+ }
+ }
+ return list;
+ }
+ }
+
+ private final ClassValue> classToLinker;
+
+ /**
+ * Creates a new composite type-based linker.
+ *
+ * @param linkers the component linkers
+ * @throws NullPointerException if {@code linkers} or any of its elements
+ * are null.
+ */
+ public CompositeTypeBasedGuardingDynamicLinker(final Iterable linkers) {
+ final List l = new LinkedList<>();
+ for(final TypeBasedGuardingDynamicLinker linker: linkers) {
+ l.add(Objects.requireNonNull(linker));
+ }
+ this.classToLinker = new ClassToLinker(l.toArray(new TypeBasedGuardingDynamicLinker[l.size()]));
+ }
+
+ /**
+ * Returns true if at least one of the composite linkers returns true from
+ * {@link TypeBasedGuardingDynamicLinker#canLinkType(Class)} for the type.
+ * @param type the type to link
+ * @return true true if at least one of the composite linkers returns true
+ * from {@link TypeBasedGuardingDynamicLinker#canLinkType(Class)}, false
+ * otherwise.
+ */
+ @Override
+ public boolean canLinkType(final Class type) {
+ return !classToLinker.get(type).isEmpty();
+ }
+
+ @Override
+ public GuardedInvocation getGuardedInvocation(final LinkRequest linkRequest, final LinkerServices linkerServices)
+ throws Exception {
+ final Object obj = linkRequest.getReceiver();
+ if(obj == null) {
+ return null;
+ }
+ for(final TypeBasedGuardingDynamicLinker linker: classToLinker.get(obj.getClass())) {
+ final GuardedInvocation invocation = linker.getGuardedInvocation(linkRequest, linkerServices);
+ if(invocation != null) {
+ return invocation;
+ }
+ }
+ return null;
+ }
+
+ /**
+ * Optimizes a list of type-based linkers. If a group of adjacent linkers in
+ * the list all implement {@link TypeBasedGuardingDynamicLinker}, they will
+ * be replaced with a single instance of
+ * {@link CompositeTypeBasedGuardingDynamicLinker} that contains them.
+ *
+ * @param linkers the list of linkers to optimize
+ * @return the optimized list
+ * @throws NullPointerException if {@code linkers} or any of its elements
+ * are null.
+ */
+ public static List optimize(final Iterable linkers) {
+ final List llinkers = new LinkedList<>();
+ final List tblinkers = new LinkedList<>();
+ for(final GuardingDynamicLinker linker: linkers) {
+ Objects.requireNonNull(linker);
+ if(linker instanceof TypeBasedGuardingDynamicLinker) {
+ tblinkers.add((TypeBasedGuardingDynamicLinker)linker);
+ } else {
+ addTypeBased(llinkers, tblinkers);
+ llinkers.add(linker);
+ }
+ }
+ addTypeBased(llinkers, tblinkers);
+ return llinkers;
+ }
+
+ private static void addTypeBased(final List llinkers,
+ final List tblinkers) {
+ switch(tblinkers.size()) {
+ case 0: {
+ break;
+ }
+ case 1: {
+ llinkers.addAll(tblinkers);
+ tblinkers.clear();
+ break;
+ }
+ default: {
+ llinkers.add(new CompositeTypeBasedGuardingDynamicLinker(tblinkers));
+ tblinkers.clear();
+ break;
+ }
+ }
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/support/DefaultInternalObjectFilter.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/support/DefaultInternalObjectFilter.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,189 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2015 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.linker.support;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import jdk.dynalink.DynamicLinkerFactory;
+import jdk.dynalink.linker.MethodHandleTransformer;
+
+/**
+ * Default implementation for a
+ * {@link DynamicLinkerFactory#setInternalObjectsFilter(MethodHandleTransformer)}
+ * that delegates to a pair of filtering method handles. It takes a method
+ * handle of {@code Object(Object)} type for filtering parameter values and
+ * another one of the same type for filtering return values. It applies them as
+ * parameter and return value filters on method handles passed to its
+ * {@link #transform(MethodHandle)} method, on those parameters and return values
+ * that are declared to have type {@link Object}. Also handles
+ * {@link MethodHandle#isVarargsCollector() method handles that support variable
+ * arity calls} with a last {@code Object[]} parameter. You can broadly think of
+ * the parameter filter as being a wrapping method for exposing internal runtime
+ * objects wrapped into an adapter with some public interface, and the return
+ * value filter as being its inverse unwrapping method.
+ */
+public class DefaultInternalObjectFilter implements MethodHandleTransformer {
+ private static final MethodHandle FILTER_VARARGS = new Lookup(MethodHandles.lookup()).findStatic(
+ DefaultInternalObjectFilter.class, "filterVarArgs", MethodType.methodType(Object[].class, MethodHandle.class, Object[].class));
+
+ private final MethodHandle parameterFilter;
+ private final MethodHandle returnFilter;
+ private final MethodHandle varArgFilter;
+
+ /**
+ * Creates a new filter.
+ * @param parameterFilter the filter for method parameters. Must be of type
+ * {@code Object(Object)}, or {@code null}.
+ * @param returnFilter the filter for return values. Must be of type
+ * {@code Object(Object)}, or {@code null}.
+ * @throws IllegalArgumentException if one or both filters are not of the
+ * expected type.
+ */
+ public DefaultInternalObjectFilter(final MethodHandle parameterFilter, final MethodHandle returnFilter) {
+ this.parameterFilter = checkHandle(parameterFilter, "parameterFilter");
+ this.returnFilter = checkHandle(returnFilter, "returnFilter");
+ this.varArgFilter = parameterFilter == null ? null : FILTER_VARARGS.bindTo(parameterFilter);
+ }
+
+ @Override
+ public MethodHandle transform(final MethodHandle target) {
+ assert target != null;
+ MethodHandle[] filters = null;
+ final MethodType type = target.type();
+ final boolean isVarArg = target.isVarargsCollector();
+ final int paramCount = type.parameterCount();
+ final MethodHandle paramsFiltered;
+ // Filter parameters
+ if (parameterFilter != null) {
+ int firstFilter = -1;
+ // Ignore receiver, start from argument 1
+ for(int i = 1; i < paramCount; ++i) {
+ final Class paramType = type.parameterType(i);
+ final boolean filterVarArg = isVarArg && i == paramCount - 1 && paramType == Object[].class;
+ if (filterVarArg || paramType == Object.class) {
+ if (filters == null) {
+ firstFilter = i;
+ filters = new MethodHandle[paramCount - firstFilter];
+ }
+ filters[i - firstFilter] = filterVarArg ? varArgFilter : parameterFilter;
+ }
+ }
+ paramsFiltered = filters != null ? MethodHandles.filterArguments(target, firstFilter, filters) : target;
+ } else {
+ paramsFiltered = target;
+ }
+ // Filter return value if needed
+ final MethodHandle returnFiltered = returnFilter != null && type.returnType() == Object.class ? MethodHandles.filterReturnValue(paramsFiltered, returnFilter) : paramsFiltered;
+ // Preserve varargs collector state
+ return isVarArg && !returnFiltered.isVarargsCollector() ? returnFiltered.asVarargsCollector(type.parameterType(paramCount - 1)) : returnFiltered;
+
+ }
+
+ private static MethodHandle checkHandle(final MethodHandle handle, final String handleKind) {
+ if (handle != null) {
+ final MethodType objectObjectType = MethodType.methodType(Object.class, Object.class);
+ if (!handle.type().equals(objectObjectType)) {
+ throw new IllegalArgumentException("Method type for " + handleKind + " must be " + objectObjectType);
+ }
+ }
+ return handle;
+ }
+
+ @SuppressWarnings("unused")
+ private static Object[] filterVarArgs(final MethodHandle parameterFilter, final Object[] args) throws Throwable {
+ Object[] newArgs = null;
+ for(int i = 0; i < args.length; ++i) {
+ final Object arg = args[i];
+ final Object newArg = parameterFilter.invokeExact(arg);
+ if (arg != newArg) {
+ if (newArgs == null) {
+ newArgs = args.clone();
+ }
+ newArgs[i] = newArg;
+ }
+ }
+ return newArgs == null ? args : newArgs;
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/support/Guards.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/support/Guards.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,338 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.linker.support;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import jdk.dynalink.DynamicLinker;
+import jdk.dynalink.linker.LinkerServices;
+
+/**
+ * Utility methods for creating typical guards for
+ * {@link MethodHandles#guardWithTest(MethodHandle, MethodHandle, MethodHandle)}
+ * and for adjusting their method types.
+ */
+public final class Guards {
+ private static final Logger LOG = Logger
+ .getLogger(Guards.class.getName(), "jdk.dynalink.support.messages");
+
+ private Guards() {
+ }
+
+ /**
+ * Creates a guard method handle with arguments of a specified type, but with boolean return value. When invoked, it
+ * returns true if the first argument is of the specified class (exactly of it, not a subclass). The rest of the
+ * arguments will be ignored.
+ *
+ * @param clazz the class of the first argument to test for
+ * @param type the method type
+ * @return a method handle testing whether its first argument is of the specified class.
+ */
+ @SuppressWarnings("boxing")
+ public static MethodHandle isOfClass(final Class clazz, final MethodType type) {
+ final Class declaredType = type.parameterType(0);
+ if(clazz == declaredType) {
+ LOG.log(Level.WARNING, "isOfClassGuardAlwaysTrue", new Object[] { clazz.getName(), 0, type, DynamicLinker.getLinkedCallSiteLocation() });
+ return constantTrue(type);
+ }
+ if(!declaredType.isAssignableFrom(clazz)) {
+ LOG.log(Level.WARNING, "isOfClassGuardAlwaysFalse", new Object[] { clazz.getName(), 0, type, DynamicLinker.getLinkedCallSiteLocation() });
+ return constantFalse(type);
+ }
+ return getClassBoundArgumentTest(IS_OF_CLASS, clazz, 0, type);
+ }
+
+ /**
+ * Creates a method handle with arguments of a specified type, but with boolean return value. When invoked, it
+ * returns true if the first argument is instance of the specified class or its subclass). The rest of the arguments
+ * will be ignored.
+ *
+ * @param clazz the class of the first argument to test for
+ * @param type the method type
+ * @return a method handle testing whether its first argument is of the specified class or subclass.
+ */
+ public static MethodHandle isInstance(final Class clazz, final MethodType type) {
+ return isInstance(clazz, 0, type);
+ }
+
+ /**
+ * Creates a method handle with arguments of a specified type, but with boolean return value. When invoked, it
+ * returns true if the n'th argument is instance of the specified class or its subclass). The rest of the arguments
+ * will be ignored.
+ *
+ * @param clazz the class of the first argument to test for
+ * @param pos the position on the argument list to test
+ * @param type the method type
+ * @return a method handle testing whether its first argument is of the specified class or subclass.
+ */
+ @SuppressWarnings("boxing")
+ public static MethodHandle isInstance(final Class clazz, final int pos, final MethodType type) {
+ final Class declaredType = type.parameterType(pos);
+ if(clazz.isAssignableFrom(declaredType)) {
+ LOG.log(Level.WARNING, "isInstanceGuardAlwaysTrue", new Object[] { clazz.getName(), pos, type, DynamicLinker.getLinkedCallSiteLocation() });
+ return constantTrue(type);
+ }
+ if(!declaredType.isAssignableFrom(clazz)) {
+ LOG.log(Level.WARNING, "isInstanceGuardAlwaysFalse", new Object[] { clazz.getName(), pos, type, DynamicLinker.getLinkedCallSiteLocation() });
+ return constantFalse(type);
+ }
+ return getClassBoundArgumentTest(IS_INSTANCE, clazz, pos, type);
+ }
+
+ /**
+ * Creates a method handle that returns true if the argument in the specified position is a Java array.
+ *
+ * @param pos the position in the argument lit
+ * @param type the method type of the handle
+ * @return a method handle that returns true if the argument in the specified position is a Java array; the rest of
+ * the arguments are ignored.
+ */
+ @SuppressWarnings("boxing")
+ public static MethodHandle isArray(final int pos, final MethodType type) {
+ final Class declaredType = type.parameterType(pos);
+ if(declaredType.isArray()) {
+ LOG.log(Level.WARNING, "isArrayGuardAlwaysTrue", new Object[] { pos, type, DynamicLinker.getLinkedCallSiteLocation() });
+ return constantTrue(type);
+ }
+ if(!declaredType.isAssignableFrom(Object[].class)) {
+ LOG.log(Level.WARNING, "isArrayGuardAlwaysFalse", new Object[] { pos, type, DynamicLinker.getLinkedCallSiteLocation() });
+ return constantFalse(type);
+ }
+ return asType(IS_ARRAY, pos, type);
+ }
+
+ private static MethodHandle getClassBoundArgumentTest(final MethodHandle test, final Class clazz, final int pos, final MethodType type) {
+ // Bind the class to the first argument of the test
+ return asType(test.bindTo(clazz), pos, type);
+ }
+
+ /**
+ * Takes a method handle intended to be used as a guard, and adapts it to
+ * the requested type, but returning a boolean. Applies
+ * {@link MethodHandle#asType(MethodType)} to convert types and uses
+ * {@link MethodHandles#dropArguments(MethodHandle, int, Class...)} to match
+ * the requested type arity.
+ * @param test the test method handle
+ * @param type the type to adapt the method handle to
+ * @return the adapted method handle
+ */
+ public static MethodHandle asType(final MethodHandle test, final MethodType type) {
+ return test.asType(getTestType(test, type));
+ }
+
+ /**
+ * Takes a method handle intended to be used as a guard, and adapts it to
+ * the requested type, but returning a boolean. Applies
+ * {@link LinkerServices#asType(MethodHandle, MethodType)} to convert types
+ * and uses
+ * {@link MethodHandles#dropArguments(MethodHandle, int, Class...)} to match
+ * the requested type arity.
+ * @param linkerServices the linker services to use for type conversions
+ * @param test the test method handle
+ * @param type the type to adapt the method handle to
+ * @return the adapted method handle
+ */
+ public static MethodHandle asType(final LinkerServices linkerServices, final MethodHandle test, final MethodType type) {
+ return linkerServices.asType(test, getTestType(test, type));
+ }
+
+ private static MethodType getTestType(final MethodHandle test, final MethodType type) {
+ return type.dropParameterTypes(test.type().parameterCount(),
+ type.parameterCount()).changeReturnType(boolean.class);
+ }
+
+ private static MethodHandle asType(final MethodHandle test, final int pos, final MethodType type) {
+ assert test != null;
+ assert type != null;
+ assert type.parameterCount() > 0;
+ assert pos >= 0 && pos < type.parameterCount();
+ assert test.type().parameterCount() == 1;
+ assert test.type().returnType() == Boolean.TYPE;
+ return MethodHandles.permuteArguments(test.asType(test.type().changeParameterType(0, type.parameterType(pos))),
+ type.changeReturnType(Boolean.TYPE), new int[] { pos });
+ }
+
+ private static final MethodHandle IS_INSTANCE = Lookup.PUBLIC.findVirtual(Class.class, "isInstance",
+ MethodType.methodType(Boolean.TYPE, Object.class));
+
+ private static final MethodHandle IS_OF_CLASS;
+ private static final MethodHandle IS_ARRAY;
+ private static final MethodHandle IS_IDENTICAL;
+ private static final MethodHandle IS_NULL;
+ private static final MethodHandle IS_NOT_NULL;
+
+ static {
+ final Lookup lookup = new Lookup(MethodHandles.lookup());
+
+ IS_OF_CLASS = lookup.findOwnStatic("isOfClass", Boolean.TYPE, Class.class, Object.class);
+ IS_ARRAY = lookup.findOwnStatic("isArray", Boolean.TYPE, Object.class);
+ IS_IDENTICAL = lookup.findOwnStatic("isIdentical", Boolean.TYPE, Object.class, Object.class);
+ IS_NULL = lookup.findOwnStatic("isNull", Boolean.TYPE, Object.class);
+ IS_NOT_NULL = lookup.findOwnStatic("isNotNull", Boolean.TYPE, Object.class);
+ }
+
+ /**
+ * Creates a guard method that tests its only argument for being of an exact particular class.
+ * @param clazz the class to test for.
+ * @return the desired guard method.
+ */
+ public static MethodHandle getClassGuard(final Class clazz) {
+ return IS_OF_CLASS.bindTo(clazz);
+ }
+
+ /**
+ * Creates a guard method that tests its only argument for being an instance of a particular class.
+ * @param clazz the class to test for.
+ * @return the desired guard method.
+ */
+ public static MethodHandle getInstanceOfGuard(final Class clazz) {
+ return IS_INSTANCE.bindTo(clazz);
+ }
+
+ /**
+ * Creates a guard method that tests its only argument for being referentially identical to another object
+ * @param obj the object used as referential identity test
+ * @return the desired guard method.
+ */
+ public static MethodHandle getIdentityGuard(final Object obj) {
+ return IS_IDENTICAL.bindTo(obj);
+ }
+
+ /**
+ * Returns a guard that tests whether the first argument is null.
+ * @return a guard that tests whether the first argument is null.
+ */
+ public static MethodHandle isNull() {
+ return IS_NULL;
+ }
+
+ /**
+ * Returns a guard that tests whether the first argument is not null.
+ * @return a guard that tests whether the first argument is not null.
+ */
+ public static MethodHandle isNotNull() {
+ return IS_NOT_NULL;
+ }
+
+ @SuppressWarnings("unused")
+ private static boolean isNull(final Object obj) {
+ return obj == null;
+ }
+
+ @SuppressWarnings("unused")
+ private static boolean isNotNull(final Object obj) {
+ return obj != null;
+ }
+
+ @SuppressWarnings("unused")
+ private static boolean isArray(final Object o) {
+ return o != null && o.getClass().isArray();
+ }
+
+ @SuppressWarnings("unused")
+ private static boolean isOfClass(final Class c, final Object o) {
+ return o != null && o.getClass() == c;
+ }
+
+ @SuppressWarnings("unused")
+ private static boolean isIdentical(final Object o1, final Object o2) {
+ return o1 == o2;
+ }
+
+ private static MethodHandle constantTrue(final MethodType type) {
+ return constantBoolean(Boolean.TRUE, type);
+ }
+
+ private static MethodHandle constantFalse(final MethodType type) {
+ return constantBoolean(Boolean.FALSE, type);
+ }
+
+ private static MethodHandle constantBoolean(final Boolean value, final MethodType type) {
+ return MethodHandles.permuteArguments(MethodHandles.constant(Boolean.TYPE, value),
+ type.changeReturnType(Boolean.TYPE));
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/support/Lookup.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/support/Lookup.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,401 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.linker.support;
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+
+/**
+ * A wrapper around {@link java.lang.invoke.MethodHandles.Lookup} that masks
+ * checked exceptions. It is useful in those cases when you're looking up
+ * methods within your own codebase (therefore it is an error if they are not
+ * present).
+ */
+public final class Lookup {
+ private final MethodHandles.Lookup lookup;
+
+ /**
+ * Creates a new instance, bound to an instance of
+ * {@link java.lang.invoke.MethodHandles.Lookup}.
+ *
+ * @param lookup the {@link java.lang.invoke.MethodHandles.Lookup} it delegates to.
+ */
+ public Lookup(final MethodHandles.Lookup lookup) {
+ this.lookup = lookup;
+ }
+
+ /**
+ * A canonical Lookup object that wraps {@link MethodHandles#publicLookup()}.
+ */
+ public static final Lookup PUBLIC = new Lookup(MethodHandles.publicLookup());
+
+ /**
+ * Performs a {@link java.lang.invoke.MethodHandles.Lookup#unreflect(Method)},
+ * converting any encountered {@link IllegalAccessException} into an
+ * {@link IllegalAccessError}.
+ *
+ * @param m the method to unreflect
+ * @return the unreflected method handle.
+ * @throws IllegalAccessError if the method is inaccessible.
+ */
+ public MethodHandle unreflect(final Method m) {
+ return unreflect(lookup, m);
+ }
+
+ /**
+ * Performs a {@link java.lang.invoke.MethodHandles.Lookup#unreflect(Method)},
+ * converting any encountered {@link IllegalAccessException} into an
+ * {@link IllegalAccessError}.
+ *
+ * @param lookup the lookup used to unreflect
+ * @param m the method to unreflect
+ * @return the unreflected method handle.
+ * @throws IllegalAccessError if the method is inaccessible.
+ */
+ public static MethodHandle unreflect(final MethodHandles.Lookup lookup, final Method m) {
+ try {
+ return lookup.unreflect(m);
+ } catch(final IllegalAccessException e) {
+ final IllegalAccessError ee = new IllegalAccessError("Failed to unreflect method " + m);
+ ee.initCause(e);
+ throw ee;
+ }
+ }
+
+ /**
+ * Performs a {@link java.lang.invoke.MethodHandles.Lookup#unreflectGetter(Field)},
+ * converting any encountered {@link IllegalAccessException} into an {@link IllegalAccessError}.
+ *
+ * @param f the field for which a getter is unreflected
+ * @return the unreflected field getter handle.
+ * @throws IllegalAccessError if the getter is inaccessible.
+ */
+ public MethodHandle unreflectGetter(final Field f) {
+ try {
+ return lookup.unreflectGetter(f);
+ } catch(final IllegalAccessException e) {
+ final IllegalAccessError ee = new IllegalAccessError("Failed to unreflect getter for field " + f);
+ ee.initCause(e);
+ throw ee;
+ }
+ }
+
+ /**
+ * Performs a {@link java.lang.invoke.MethodHandles.Lookup#findGetter(Class, String, Class)},
+ * converting any encountered {@link IllegalAccessException} into an
+ * {@link IllegalAccessError} and {@link NoSuchFieldException} into a
+ * {@link NoSuchFieldError}.
+ *
+ * @param refc the class declaring the field
+ * @param name the name of the field
+ * @param type the type of the field
+ * @return the unreflected field getter handle.
+ * @throws IllegalAccessError if the field is inaccessible.
+ * @throws NoSuchFieldError if the field does not exist.
+ */
+ public MethodHandle findGetter(final Classrefc, final String name, final Class type) {
+ try {
+ return lookup.findGetter(refc, name, type);
+ } catch(final IllegalAccessException e) {
+ final IllegalAccessError ee = new IllegalAccessError("Failed to access getter for field " + refc.getName() +
+ "." + name + " of type " + type.getName());
+ ee.initCause(e);
+ throw ee;
+ } catch(final NoSuchFieldException e) {
+ final NoSuchFieldError ee = new NoSuchFieldError("Failed to find getter for field " + refc.getName() +
+ "." + name + " of type " + type.getName());
+ ee.initCause(e);
+ throw ee;
+ }
+ }
+
+ /**
+ * Performs a {@link java.lang.invoke.MethodHandles.Lookup#unreflectSetter(Field)},
+ * converting any encountered {@link IllegalAccessException} into an
+ * {@link IllegalAccessError}.
+ *
+ * @param f the field for which a setter is unreflected
+ * @return the unreflected field setter handle.
+ * @throws IllegalAccessError if the field is inaccessible.
+ * @throws NoSuchFieldError if the field does not exist.
+ */
+ public MethodHandle unreflectSetter(final Field f) {
+ try {
+ return lookup.unreflectSetter(f);
+ } catch(final IllegalAccessException e) {
+ final IllegalAccessError ee = new IllegalAccessError("Failed to unreflect setter for field " + f);
+ ee.initCause(e);
+ throw ee;
+ }
+ }
+
+ /**
+ * Performs a {@link java.lang.invoke.MethodHandles.Lookup#unreflectConstructor(Constructor)},
+ * converting any encountered {@link IllegalAccessException} into an
+ * {@link IllegalAccessError}.
+ *
+ * @param c the constructor to unreflect
+ * @return the unreflected constructor handle.
+ * @throws IllegalAccessError if the constructor is inaccessible.
+ */
+ public MethodHandle unreflectConstructor(final Constructor c) {
+ return unreflectConstructor(lookup, c);
+ }
+
+ /**
+ * Performs a {@link java.lang.invoke.MethodHandles.Lookup#unreflectConstructor(Constructor)},
+ * converting any encountered {@link IllegalAccessException} into an
+ * {@link IllegalAccessError}.
+ *
+ * @param lookup the lookup used to unreflect
+ * @param c the constructor to unreflect
+ * @return the unreflected constructor handle.
+ * @throws IllegalAccessError if the constructor is inaccessible.
+ */
+ public static MethodHandle unreflectConstructor(final MethodHandles.Lookup lookup, final Constructor c) {
+ try {
+ return lookup.unreflectConstructor(c);
+ } catch(final IllegalAccessException e) {
+ final IllegalAccessError ee = new IllegalAccessError("Failed to unreflect constructor " + c);
+ ee.initCause(e);
+ throw ee;
+ }
+ }
+
+ /**
+ * Performs a {@link java.lang.invoke.MethodHandles.Lookup#findSpecial(Class, String, MethodType, Class)}
+ * on the underlying lookup. Converts any encountered
+ * {@link IllegalAccessException} into an {@link IllegalAccessError} and
+ * {@link NoSuchMethodException} into a {@link NoSuchMethodError}.
+ *
+ * @param declaringClass class declaring the method
+ * @param name the name of the method
+ * @param type the type of the method
+ * @return a method handle for the method
+ * @throws IllegalAccessError if the method is inaccessible.
+ * @throws NoSuchMethodError if the method does not exist.
+ */
+ public MethodHandle findSpecial(final Class declaringClass, final String name, final MethodType type) {
+ try {
+ return lookup.findSpecial(declaringClass, name, type, declaringClass);
+ } catch(final IllegalAccessException e) {
+ final IllegalAccessError ee = new IllegalAccessError("Failed to access special method " + methodDescription(
+ declaringClass, name, type));
+ ee.initCause(e);
+ throw ee;
+ } catch(final NoSuchMethodException e) {
+ final NoSuchMethodError ee = new NoSuchMethodError("Failed to find special method " + methodDescription(
+ declaringClass, name, type));
+ ee.initCause(e);
+ throw ee;
+ }
+ }
+
+ private static String methodDescription(final Class declaringClass, final String name, final MethodType type) {
+ return declaringClass.getName() + "#" + name + type;
+ }
+
+ /**
+ * Performs a {@link java.lang.invoke.MethodHandles.Lookup#findStatic(Class, String, MethodType)}
+ * on the underlying lookup. Converts any encountered
+ * {@link IllegalAccessException} into an {@link IllegalAccessError} and
+ * {@link NoSuchMethodException} into a {@link NoSuchMethodError}.
+ *
+ * @param declaringClass class declaring the method
+ * @param name the name of the method
+ * @param type the type of the method
+ * @return a method handle for the method
+ * @throws IllegalAccessError if the method is inaccessible.
+ * @throws NoSuchMethodError if the method does not exist.
+ */
+ public MethodHandle findStatic(final Class declaringClass, final String name, final MethodType type) {
+ try {
+ return lookup.findStatic(declaringClass, name, type);
+ } catch(final IllegalAccessException e) {
+ final IllegalAccessError ee = new IllegalAccessError("Failed to access static method " + methodDescription(
+ declaringClass, name, type));
+ ee.initCause(e);
+ throw ee;
+ } catch(final NoSuchMethodException e) {
+ final NoSuchMethodError ee = new NoSuchMethodError("Failed to find static method " + methodDescription(
+ declaringClass, name, type));
+ ee.initCause(e);
+ throw ee;
+ }
+ }
+
+ /**
+ * Performs a {@link java.lang.invoke.MethodHandles.Lookup#findVirtual(Class, String, MethodType)}
+ * on the underlying lookup. Converts any encountered
+ * {@link IllegalAccessException} into an {@link IllegalAccessError} and
+ * {@link NoSuchMethodException} into a {@link NoSuchMethodError}.
+ *
+ * @param declaringClass class declaring the method
+ * @param name the name of the method
+ * @param type the type of the method
+ * @return a method handle for the method
+ * @throws IllegalAccessError if the method is inaccessible.
+ * @throws NoSuchMethodError if the method does not exist.
+ */
+ public MethodHandle findVirtual(final Class declaringClass, final String name, final MethodType type) {
+ try {
+ return lookup.findVirtual(declaringClass, name, type);
+ } catch(final IllegalAccessException e) {
+ final IllegalAccessError ee = new IllegalAccessError("Failed to access virtual method " + methodDescription(
+ declaringClass, name, type));
+ ee.initCause(e);
+ throw ee;
+ } catch(final NoSuchMethodException e) {
+ final NoSuchMethodError ee = new NoSuchMethodError("Failed to find virtual method " + methodDescription(
+ declaringClass, name, type));
+ ee.initCause(e);
+ throw ee;
+ }
+ }
+
+ /**
+ * Given a lookup, finds using {@link #findSpecial(Class, String, MethodType)}
+ * a method on that lookup's class. Useful in classes' code for convenient
+ * linking to their own privates.
+ * @param lookup the lookup for the class
+ * @param name the name of the method
+ * @param rtype the return type of the method
+ * @param ptypes the parameter types of the method
+ * @return the method handle for the method
+ */
+ public static MethodHandle findOwnSpecial(final MethodHandles.Lookup lookup, final String name, final Class rtype, final Class... ptypes) {
+ return new Lookup(lookup).findOwnSpecial(name, rtype, ptypes);
+ }
+
+
+ /**
+ * Finds using {@link #findSpecial(Class, String, MethodType)} a method on
+ * that lookup's class. Useful in classes' code for convenient linking to
+ * their own privates. It's also more convenient than {@code findSpecial}
+ * in that you can just list the parameter types, and don't have to specify
+ * lookup class.
+ * @param name the name of the method
+ * @param rtype the return type of the method
+ * @param ptypes the parameter types of the method
+ * @return the method handle for the method
+ */
+ public MethodHandle findOwnSpecial(final String name, final Class rtype, final Class... ptypes) {
+ return findSpecial(lookup.lookupClass(), name, MethodType.methodType(rtype, ptypes));
+ }
+
+ /**
+ * Given a lookup, finds using {@link #findStatic(Class, String, MethodType)}
+ * a method on that lookup's class. Useful in classes' code for convenient
+ * linking to their own privates. It's easier to use than {@code findStatic}
+ * in that you can just list the parameter types, and don't have to specify
+ * lookup class.
+ * @param lookup the lookup for the class
+ * @param name the name of the method
+ * @param rtype the return type of the method
+ * @param ptypes the parameter types of the method
+ * @return the method handle for the method
+ */
+ public static MethodHandle findOwnStatic(final MethodHandles.Lookup lookup, final String name, final Class rtype, final Class... ptypes) {
+ return new Lookup(lookup).findOwnStatic(name, rtype, ptypes);
+ }
+
+ /**
+ * Finds using {@link #findStatic(Class, String, MethodType)} a method on
+ * that lookup's class. Useful in classes' code for convenient linking to
+ * their own privates. It's easier to use than {@code findStatic}
+ * in that you can just list the parameter types, and don't have to specify
+ * lookup class.
+ * @param name the name of the method
+ * @param rtype the return type of the method
+ * @param ptypes the parameter types of the method
+ * @return the method handle for the method
+ */
+ public MethodHandle findOwnStatic(final String name, final Class rtype, final Class... ptypes) {
+ return findStatic(lookup.lookupClass(), name, MethodType.methodType(rtype, ptypes));
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/support/SimpleLinkRequest.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/support/SimpleLinkRequest.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,140 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.linker.support;
+
+import java.util.Objects;
+import jdk.dynalink.CallSiteDescriptor;
+import jdk.dynalink.linker.LinkRequest;
+
+/**
+ * Default simple implementation of {@link LinkRequest}.
+ */
+public class SimpleLinkRequest implements LinkRequest {
+
+ private final CallSiteDescriptor callSiteDescriptor;
+ private final Object[] arguments;
+ private final boolean callSiteUnstable;
+
+ /**
+ * Creates a new link request.
+ *
+ * @param callSiteDescriptor the descriptor for the call site being linked.
+ * Must not be null.
+ * @param callSiteUnstable true if the call site being linked is considered
+ * unstable.
+ * @param arguments the arguments for the invocation. Must not be null.
+ * @throws NullPointerException if either {@code callSiteDescriptor} or
+ * {@code arguments} is null.
+ */
+ public SimpleLinkRequest(final CallSiteDescriptor callSiteDescriptor, final boolean callSiteUnstable, final Object... arguments) {
+ this.callSiteDescriptor = Objects.requireNonNull(callSiteDescriptor);
+ this.callSiteUnstable = callSiteUnstable;
+ this.arguments = arguments.clone();
+ }
+
+ @Override
+ public Object[] getArguments() {
+ return arguments.clone();
+ }
+
+ @Override
+ public Object getReceiver() {
+ return arguments.length > 0 ? arguments[0] : null;
+ }
+
+ @Override
+ public CallSiteDescriptor getCallSiteDescriptor() {
+ return callSiteDescriptor;
+ }
+
+ @Override
+ public boolean isCallSiteUnstable() {
+ return callSiteUnstable;
+ }
+
+ @Override
+ public LinkRequest replaceArguments(final CallSiteDescriptor newCallSiteDescriptor, final Object... newArguments) {
+ return new SimpleLinkRequest(newCallSiteDescriptor, callSiteUnstable, newArguments);
+ }
+}
diff -r 5ac6287ec71a -r 84eaea8d0574 nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/support/TypeUtilities.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/src/jdk.dynalink/share/classes/jdk/dynalink/linker/support/TypeUtilities.java Wed Dec 02 09:37:26 2015 -0800
@@ -0,0 +1,349 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * This file is available under and governed by the GNU General Public
+ * License version 2 only, as published by the Free Software Foundation.
+ * However, the following notice accompanied the original version of this
+ * file, and Oracle licenses the original version of this file under the BSD
+ * license:
+ */
+/*
+ Copyright 2009-2013 Attila Szegedi
+
+ Licensed under both the Apache License, Version 2.0 (the "Apache License")
+ and the BSD License (the "BSD License"), with licensee being free to
+ choose either of the two at their discretion.
+
+ You may not use this file except in compliance with either the Apache
+ License or the BSD License.
+
+ If you choose to use this file in compliance with the Apache License, the
+ following notice applies to you:
+
+ You may obtain a copy of the Apache License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied. See the License for the specific language governing
+ permissions and limitations under the License.
+
+ If you choose to use this file in compliance with the BSD License, the
+ following notice applies to you:
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are
+ met:
+ * Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ * Neither the name of the copyright holder nor the names of
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
+ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+package jdk.dynalink.linker.support;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.IdentityHashMap;
+import java.util.Map;
+import jdk.dynalink.DynamicLinkerFactory;
+import jdk.dynalink.linker.MethodTypeConversionStrategy;
+
+/**
+ * Various static utility methods for working with Java types.
+ */
+public final class TypeUtilities {
+ static final Class