| /* |
| * 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 jdk.internal.dynalink.CallSiteDescriptor; |
| import jdk.internal.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). |
| * |
| * @author Attila Szegedi |
| */ |
| 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; |
| } |
| } |