--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/internal/dynalink/beans/CallerSensitiveDynamicMethod.java Wed Jul 05 21:04:26 2017 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,175 +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.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.internal.dynalink.CallSiteDescriptor;
-import jdk.internal.dynalink.internal.AccessControlContextFactory;
-import jdk.internal.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<MethodHandles.Lookup>)()->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;
- }
-}