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@404: import jdk.internal.dynalink.CallSiteDescriptor;
attila@90: import jdk.internal.dynalink.linker.LinkerServices;
attila@90: 
attila@90: /**
attila@90:  * Represents a single dynamic method. A "dynamic" method can be bound to a single Java method, or can be bound to all
attila@90:  * overloaded methods of the same name on a class. Getting an invocation of a dynamic method bound to multiple
attila@90:  * overloaded methods will perform overload resolution (actually, it will perform partial overloaded resolution at link
attila@90:  * time, but if that fails to identify exactly one target method, it will generate a method handle that will perform the
attila@90:  * rest of the overload resolution at invocation time for actual argument types).
attila@90:  *
attila@90:  * @author Attila Szegedi
attila@90:  */
attila@90: abstract class DynamicMethod {
attila@90:     private final String name;
attila@90: 
attila@90:     DynamicMethod(String name) {
attila@90:         this.name = name;
attila@90:     }
attila@90: 
attila@90:     String getName() {
attila@90:         return name;
attila@90:     }
attila@90: 
attila@90:     /**
attila@90:      * Creates an invocation for the dynamic method. If the method is overloaded, it will perform overloaded method
attila@90:      * resolution based on the specified method type. The resulting resolution can either identify a single method to be
attila@90:      * invoked among the overloads, or it can identify multiple ones. In the latter case, the returned method handle
attila@90:      * will perform further overload resolution among these candidates at every invocation. If the method to be invoked
attila@90:      * is a variable arguments (vararg) method, it will pack the extra arguments in an array before the invocation of
attila@90:      * the underlying method if it is not already done.
attila@90:      *
attila@404:      * @param callSiteDescriptor the descriptor of the call site
attila@90:      * @param linkerServices linker services. Used for language-specific type conversions.
attila@90:      * @return an invocation suitable for calling the method from the specified call site.
attila@90:      */
attila@404:     abstract MethodHandle getInvocation(CallSiteDescriptor callSiteDescriptor, LinkerServices linkerServices);
attila@90: 
attila@90:     /**
attila@404:      * Returns a single dynamic method representing a single underlying Java method (possibly selected among several
attila@90:      * overloads) with formal parameter types exactly matching the passed signature.
attila@90:      * @param paramTypes the comma-separated list of requested parameter type names. The names will match both
attila@90:      * qualified and unqualified type names.
attila@404:      * @return a single dynamic method representing a single underlying Java method, or null if none of the Java methods
attila@90:      * behind this dynamic method exactly match the requested parameter types.
attila@90:      */
attila@404:     abstract SingleDynamicMethod getMethodForExactParamTypes(String paramTypes);
attila@90: 
attila@90:     /**
attila@404:      * True if this dynamic method already contains a method with an identical signature as the passed in method.
attila@404:      * @param method the method to check
attila@404:      * @return true if it already contains an equivalent method.
attila@90:      */
attila@404:     abstract boolean contains(SingleDynamicMethod method);
attila@90: 
attila@90:     static String getClassAndMethodName(Class<?> clazz, String name) {
attila@90:         final String clazzName = clazz.getCanonicalName();
attila@90:         return (clazzName == null ? clazz.getName() : clazzName) + "." + name;
attila@90:     }
attila@90: 
attila@90:     @Override
attila@90:     public String toString() {
attila@90:         return "[" + getClass().getName() + " " + getName() + "]";
attila@90:     }
attila@101: }