attila@90: /* attila@90: * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. attila@90: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. attila@90: * attila@90: * This code is free software; you can redistribute it and/or modify it attila@90: * under the terms of the GNU General Public License version 2 only, as attila@90: * published by the Free Software Foundation. Oracle designates this attila@90: * particular file as subject to the "Classpath" exception as provided attila@90: * by Oracle in the LICENSE file that accompanied this code. attila@90: * attila@90: * This code is distributed in the hope that it will be useful, but WITHOUT attila@90: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or attila@90: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License attila@90: * version 2 for more details (a copy is included in the LICENSE file that attila@90: * accompanied this code). attila@90: * attila@90: * You should have received a copy of the GNU General Public License version attila@90: * 2 along with this work; if not, write to the Free Software Foundation, attila@90: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. attila@90: * attila@90: * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA attila@90: * or visit www.oracle.com if you need additional information or have any attila@90: * questions. attila@90: */ attila@90: attila@90: /* attila@90: * This file is available under and governed by the GNU General Public attila@90: * License version 2 only, as published by the Free Software Foundation. attila@90: * However, the following notice accompanied the original version of this attila@90: * file, and Oracle licenses the original version of this file under the BSD attila@90: * license: attila@90: */ attila@90: /* attila@90: Copyright 2009-2013 Attila Szegedi attila@90: attila@90: Licensed under both the Apache License, Version 2.0 (the "Apache License") attila@90: and the BSD License (the "BSD License"), with licensee being free to attila@90: choose either of the two at their discretion. attila@90: attila@90: You may not use this file except in compliance with either the Apache attila@90: License or the BSD License. attila@90: attila@90: If you choose to use this file in compliance with the Apache License, the attila@90: following notice applies to you: attila@90: attila@90: You may obtain a copy of the Apache License at attila@90: attila@90: http://www.apache.org/licenses/LICENSE-2.0 attila@90: attila@90: Unless required by applicable law or agreed to in writing, software attila@90: distributed under the License is distributed on an "AS IS" BASIS, attila@90: WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or attila@90: implied. See the License for the specific language governing attila@90: permissions and limitations under the License. attila@90: attila@90: If you choose to use this file in compliance with the BSD License, the attila@90: following notice applies to you: attila@90: attila@90: Redistribution and use in source and binary forms, with or without attila@90: modification, are permitted provided that the following conditions are attila@90: met: attila@90: * Redistributions of source code must retain the above copyright attila@90: notice, this list of conditions and the following disclaimer. attila@90: * Redistributions in binary form must reproduce the above copyright attila@90: notice, this list of conditions and the following disclaimer in the attila@90: documentation and/or other materials provided with the distribution. attila@90: * Neither the name of the copyright holder nor the names of attila@90: contributors may be used to endorse or promote products derived from attila@90: this software without specific prior written permission. attila@90: attila@90: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS attila@90: IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED attila@90: TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A attila@90: PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER attila@90: BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR attila@90: CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF attila@90: SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR attila@90: BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, attila@90: WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR attila@90: OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF attila@90: ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. attila@90: */ attila@90: attila@90: package jdk.internal.dynalink.beans; attila@90: attila@90: import java.lang.invoke.MethodHandle; attila@90: import java.lang.invoke.MethodHandles; attila@90: import jdk.internal.dynalink.CallSiteDescriptor; attila@90: import jdk.internal.dynalink.linker.GuardedInvocation; attila@90: import jdk.internal.dynalink.linker.LinkRequest; attila@90: import jdk.internal.dynalink.linker.LinkerServices; attila@90: import jdk.internal.dynalink.linker.TypeBasedGuardingDynamicLinker; attila@404: import jdk.internal.dynalink.support.CallSiteDescriptorFactory; attila@90: import jdk.internal.dynalink.support.Guards; attila@90: attila@90: /** attila@90: * Simple linker that implements the "dyn:call" operation for {@link DynamicMethod} objects - the objects returned by attila@90: * "dyn:getMethod" from {@link AbstractJavaLinker}. attila@90: */ attila@90: class DynamicMethodLinker implements TypeBasedGuardingDynamicLinker { attila@90: @Override attila@962: public boolean canLinkType(final Class type) { attila@90: return DynamicMethod.class.isAssignableFrom(type); attila@101: } attila@90: attila@90: @Override attila@962: public GuardedInvocation getGuardedInvocation(final LinkRequest linkRequest, final LinkerServices linkerServices) { attila@90: final Object receiver = linkRequest.getReceiver(); attila@90: if(!(receiver instanceof DynamicMethod)) { attila@90: return null; attila@90: } attila@90: final CallSiteDescriptor desc = linkRequest.getCallSiteDescriptor(); attila@404: if(desc.getNameTokenCount() != 2 && desc.getNameToken(CallSiteDescriptor.SCHEME) != "dyn") { attila@90: return null; attila@90: } attila@90: final String operator = desc.getNameToken(CallSiteDescriptor.OPERATOR); attila@963: final DynamicMethod dynMethod = (DynamicMethod)receiver; attila@963: final boolean constructor = dynMethod.isConstructor(); attila@963: final MethodHandle invocation; attila@963: attila@963: if (operator == "call" && !constructor) { attila@963: invocation = dynMethod.getInvocation( attila@404: CallSiteDescriptorFactory.dropParameterTypes(desc, 0, 1), linkerServices); attila@963: } else if (operator == "new" && constructor) { attila@963: final MethodHandle ctorInvocation = dynMethod.getInvocation(desc, linkerServices); attila@963: if(ctorInvocation == null) { attila@90: return null; attila@90: } attila@963: attila@963: // Insert null for StaticClass parameter attila@963: invocation = MethodHandles.insertArguments(ctorInvocation, 0, (Object)null); attila@963: } else { attila@963: return null; attila@963: } attila@963: attila@963: if (invocation != null) { attila@404: return new GuardedInvocation(MethodHandles.dropArguments(invocation, 0, attila@963: desc.getMethodType().parameterType(0)), Guards.getIdentityGuard(receiver)); attila@90: } attila@963: attila@90: return null; attila@90: } attila@90: }