--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/internal/dynalink/beans/StaticClassLinker.java Wed Jul 05 21:04:26 2017 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,216 +0,0 @@
-/*
- * 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.internal.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.internal.dynalink.CallSiteDescriptor;
-import jdk.internal.dynalink.NamedOperation;
-import jdk.internal.dynalink.StandardOperation;
-import jdk.internal.dynalink.beans.GuardedInvocationComponent.ValidationType;
-import jdk.internal.dynalink.linker.GuardedInvocation;
-import jdk.internal.dynalink.linker.LinkRequest;
-import jdk.internal.dynalink.linker.LinkerServices;
-import jdk.internal.dynalink.linker.TypeBasedGuardingDynamicLinker;
-import jdk.internal.dynalink.linker.support.Lookup;
-
-/**
- * Provides a linker for the {@link StaticClass} objects.
- */
-class StaticClassLinker implements TypeBasedGuardingDynamicLinker {
- private static final ClassValue<SingleClassStaticsLinker> linkers = new ClassValue<SingleClassStaticsLinker>() {
- @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, "<init>");
- }
- if(CheckRestrictedPackage.isRestrictedClass(clazz)) {
- return null;
- }
- return createDynamicMethod(Arrays.asList(clazz.getConstructors()), clazz, "<init>");
- }
-
- @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<String> getReadableStaticPropertyNames(final Class<?> clazz) {
- return linkers.get(clazz).getReadablePropertyNames();
- }
-
- static Set<String> getWritableStaticPropertyNames(final Class<?> clazz) {
- return linkers.get(clazz).getWritablePropertyNames();
- }
-
- static Set<String> 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;
- }
-}