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/*
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* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @summary smoke test for invokedynamic instructions
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* @library indify
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* @compile InvokeDynamicPrintArgs.java
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* @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableInvokeDynamic
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* indify.Indify
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* --verify-specifier-count=3 --transitionalJSR292=false
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* --expand-properties --classpath ${test.classes}
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* --java InvokeDynamicPrintArgs --check-output
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*/
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import java.util.*;
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import java.io.*;
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import java.dyn.*;
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import static java.dyn.MethodHandles.*;
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import static java.dyn.MethodType.*;
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public class InvokeDynamicPrintArgs {
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public static void main(String... av) throws Throwable {
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if (av.length > 0) openBuf(); // --check-output mode
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System.out.println("Printing some argument lists, starting with a empty one:");
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INDY_nothing().invokeExact(); // BSM specifier #0 = {bsm}
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INDY_bar().invokeExact("bar arg", 1); // BSM specifier #1 = {bsm2, Void.class, "void type"}
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INDY_bar2().invokeExact("bar2 arg", 222); // BSM specifier #1 = (same)
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INDY_baz().invokeExact("baz arg", 2, 3.14); // BSM specifier #2 = {bsm2, 1234.5}
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INDY_foo().invokeExact("foo arg"); // BSM specifier #0 = (same)
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// Hence, BSM specifier count should be 3. See "--verify-specifier-count=3" above.
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System.out.println("Done printing argument lists.");
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closeBuf();
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}
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private static PrintStream oldOut;
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private static ByteArrayOutputStream buf;
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private static void openBuf() {
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oldOut = System.out;
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buf = new ByteArrayOutputStream();
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System.setOut(new PrintStream(buf));
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}
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private static void closeBuf() {
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if (buf == null) return;
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System.out.flush();
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System.setOut(oldOut);
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String[] haveLines = new String(buf.toByteArray()).split("[\n\r]+");
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for (String line : haveLines) System.out.println(line);
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Iterator<String> iter = Arrays.asList(haveLines).iterator();
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for (String want : EXPECT_OUTPUT) {
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String have = iter.hasNext() ? iter.next() : "[EOF]";
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if (want.equals(have)) continue;
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System.err.println("want line: "+want);
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System.err.println("have line: "+have);
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throw new AssertionError("unexpected output: "+have);
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}
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if (iter.hasNext())
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throw new AssertionError("unexpected output: "+iter.next());
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}
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private static final String[] EXPECT_OUTPUT = {
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"Printing some argument lists, starting with a empty one:",
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"[InvokeDynamicPrintArgs, nothing, ()void][]",
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"[InvokeDynamicPrintArgs, bar, (java.lang.String,int)void, class java.lang.Void, void type!, 1, 234.5, 67.5, 89][bar arg, 1]",
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"[InvokeDynamicPrintArgs, bar2, (java.lang.String,int)void, class java.lang.Void, void type!, 1, 234.5, 67.5, 89][bar2 arg, 222]",
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"[InvokeDynamicPrintArgs, baz, (java.lang.String,int,double)void, 1234.5][baz arg, 2, 3.14]",
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"[InvokeDynamicPrintArgs, foo, (java.lang.String)void][foo arg]",
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"Done printing argument lists."
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};
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private static void printArgs(Object bsmInfo, Object... args) {
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System.out.println(bsmInfo+Arrays.deepToString(args));
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}
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private static MethodHandle MH_printArgs() throws ReflectiveOperationException {
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shouldNotCallThis();
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return lookup().findStatic(lookup().lookupClass(),
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"printArgs", methodType(void.class, Object.class, Object[].class));
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}
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private static CallSite bsm(Lookup caller, String name, MethodType type) throws ReflectiveOperationException {
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// ignore caller and name, but match the type:
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Object bsmInfo = Arrays.asList(caller, name, type);
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return new CallSite(MH_printArgs().bindTo(bsmInfo).asCollector(Object[].class, type.parameterCount()).asType(type));
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}
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private static MethodType MT_bsm() {
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shouldNotCallThis();
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return methodType(CallSite.class, Lookup.class, String.class, MethodType.class);
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}
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private static MethodHandle MH_bsm() throws ReflectiveOperationException {
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shouldNotCallThis();
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return lookup().findStatic(lookup().lookupClass(), "bsm", MT_bsm());
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}
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private static CallSite bsm2(Lookup caller, String name, MethodType type, Object arg) throws ReflectiveOperationException {
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// ignore caller and name, but match the type:
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List<Object> bsmInfo = new ArrayList<>(Arrays.asList(caller, name, type));
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if (arg instanceof Object[])
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bsmInfo.addAll(Arrays.asList((Object[])arg));
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else
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bsmInfo.add(arg);
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return new CallSite(MH_printArgs().bindTo(bsmInfo).asCollector(Object[].class, type.parameterCount()).asType(type));
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}
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private static MethodType MT_bsm2() {
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shouldNotCallThis();
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return methodType(CallSite.class, Lookup.class, String.class, MethodType.class, Object.class);
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}
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private static MethodHandle MH_bsm2() throws ReflectiveOperationException {
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shouldNotCallThis();
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return lookup().findStatic(lookup().lookupClass(), "bsm2", MT_bsm2());
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}
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private static MethodHandle INDY_nothing() throws Throwable {
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shouldNotCallThis();
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return ((CallSite) MH_bsm().invokeGeneric(lookup(),
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"nothing", methodType(void.class)
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)).dynamicInvoker();
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}
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private static MethodHandle INDY_foo() throws Throwable {
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shouldNotCallThis();
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return ((CallSite) MH_bsm().invokeGeneric(lookup(),
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"foo", methodType(void.class, String.class)
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)).dynamicInvoker();
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}
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private static MethodHandle INDY_bar() throws Throwable {
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shouldNotCallThis();
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return ((CallSite) MH_bsm2().invokeGeneric(lookup(),
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"bar", methodType(void.class, String.class, int.class)
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, new Object[] { Void.class, "void type!",
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1, 234.5F, 67.5, (long)89 }
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)).dynamicInvoker();
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}
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private static MethodHandle INDY_bar2() throws Throwable {
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shouldNotCallThis();
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return ((CallSite) MH_bsm2().invokeGeneric(lookup(),
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"bar2", methodType(void.class, String.class, int.class)
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, new Object[] { Void.class, "void type!",
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1, 234.5F, 67.5, (long)89 }
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)).dynamicInvoker();
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}
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private static MethodHandle INDY_baz() throws Throwable {
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shouldNotCallThis();
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return ((CallSite) MH_bsm2().invokeGeneric(lookup(),
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"baz", methodType(void.class, String.class, int.class, double.class)
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, 1234.5
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)).dynamicInvoker();
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}
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private static void shouldNotCallThis() {
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// if this gets called, the transformation has not taken place
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if (System.getProperty("InvokeDynamicPrintArgs.allow-untransformed") != null) return;
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throw new AssertionError("this code should be statically transformed away by Indify");
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}
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}
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