jdk8-mips64-public/nashorn: src/jdk/internal/dynalink/beans/ApplicableOverloadedMethods.java@b1a7da25b547 (annotated)

src/jdk/internal/dynalink/beans/ApplicableOverloadedMethods.java@b1a7da25b547 (annotated)

src/jdk/internal/dynalink/beans/ApplicableOverloadedMethods.java

Wed, 27 Apr 2016 01:36:41 +0800

author: aoqi
date: Wed, 27 Apr 2016 01:36:41 +0800
changeset 0: b1a7da25b547
child 952: 6d5471a497fb
permissions: -rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/nashorn/
changeset: 1034:4b9cc65dd24d
tag: jdk8u25-b17

 /*
  * 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.MethodType;
 import java.util.LinkedList;
 import java.util.List;
 import jdk.internal.dynalink.support.TypeUtilities;
 /**
  * Represents overloaded methods applicable to a specific call site signature.
  *
  * @author Attila Szegedi
  */
 class ApplicableOverloadedMethods {
     private final List<SingleDynamicMethod> methods;
     private final boolean varArgs;
     /**
      * Creates a new ApplicableOverloadedMethods instance
      *
      * @param methods a list of all overloaded methods with the same name for a class.
      * @param callSiteType the type of the call site
      * @param test applicability test. One of {@link #APPLICABLE_BY_SUBTYPING},
      * {@link #APPLICABLE_BY_METHOD_INVOCATION_CONVERSION}, or {@link #APPLICABLE_BY_VARIABLE_ARITY}.
      */
     ApplicableOverloadedMethods(final List<SingleDynamicMethod> methods, final MethodType callSiteType,
             final ApplicabilityTest test) {
         this.methods = new LinkedList<>();
         for(SingleDynamicMethod m: methods) {
             if(test.isApplicable(callSiteType, m)) {
                 this.methods.add(m);
             }
         }
         varArgs = test == APPLICABLE_BY_VARIABLE_ARITY;
     }
     /**
      * Retrieves all the methods this object holds.
      *
      * @return list of all methods.
      */
     List<SingleDynamicMethod> getMethods() {
         return methods;
     }
     /**
      * Returns a list of all methods in this objects that are maximally specific.
      *
      * @return a list of maximally specific methods.
      */
     List<SingleDynamicMethod> findMaximallySpecificMethods() {
         return MaximallySpecific.getMaximallySpecificMethods(methods, varArgs);
     }
     abstract static class ApplicabilityTest {
         abstract boolean isApplicable(MethodType callSiteType, SingleDynamicMethod method);
     }
     /**
      * Implements the applicability-by-subtyping test from JLS 15.12.2.2.
      */
     static final ApplicabilityTest APPLICABLE_BY_SUBTYPING = new ApplicabilityTest() {
         @Override
         boolean isApplicable(MethodType callSiteType, SingleDynamicMethod method) {
             final MethodType methodType = method.getMethodType();
             final int methodArity = methodType.parameterCount();
             if(methodArity != callSiteType.parameterCount()) {
                 return false;
             }
             // 0th arg is receiver; it doesn't matter for overload
             // resolution.
             for(int i = 1; i < methodArity; ++i) {
                 if(!TypeUtilities.isSubtype(callSiteType.parameterType(i), methodType.parameterType(i))) {
                     return false;
                 }
             }
             return true;
         }
     };
     /**
      * Implements the applicability-by-method-invocation-conversion test from JLS 15.12.2.3.
      */
     static final ApplicabilityTest APPLICABLE_BY_METHOD_INVOCATION_CONVERSION = new ApplicabilityTest() {
         @Override
         boolean isApplicable(MethodType callSiteType, SingleDynamicMethod method) {
             final MethodType methodType = method.getMethodType();
             final int methodArity = methodType.parameterCount();
             if(methodArity != callSiteType.parameterCount()) {
                 return false;
             }
             // 0th arg is receiver; it doesn't matter for overload
             // resolution.
             for(int i = 1; i < methodArity; ++i) {
                 if(!TypeUtilities.isMethodInvocationConvertible(callSiteType.parameterType(i),
                         methodType.parameterType(i))) {
                     return false;
                 }
             }
             return true;
         }
     };
     /**
      * Implements the applicability-by-variable-arity test from JLS 15.12.2.4.
      */
     static final ApplicabilityTest APPLICABLE_BY_VARIABLE_ARITY = new ApplicabilityTest() {
         @Override
         boolean isApplicable(MethodType callSiteType, SingleDynamicMethod method) {
             if(!method.isVarArgs()) {
                 return false;
             }
             final MethodType methodType = method.getMethodType();
             final int methodArity = methodType.parameterCount();
             final int fixArity = methodArity - 1;
             final int callSiteArity = callSiteType.parameterCount();
             if(fixArity > callSiteArity) {
                 return false;
             }
             // 0th arg is receiver; it doesn't matter for overload
             // resolution.
             for(int i = 1; i < fixArity; ++i) {
                 if(!TypeUtilities.isMethodInvocationConvertible(callSiteType.parameterType(i),
                         methodType.parameterType(i))) {
                     return false;
                 }
             }
             final Class<?> varArgType = methodType.parameterType(fixArity).getComponentType();
             for(int i = fixArity; i < callSiteArity; ++i) {
                 if(!TypeUtilities.isMethodInvocationConvertible(callSiteType.parameterType(i), varArgType)) {
                     return false;
                 }
             }
             return true;
         }
     };
 }

Mercurial > jdk8-mips64-public > nashorn / annotate

src/jdk/internal/dynalink/beans/ApplicableOverloadedMethods.java@b1a7da25b547 (annotated)

src/jdk/internal/dynalink/beans/ApplicableOverloadedMethods.java