--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/internal/dynalink/beans/ApplicableOverloadedMethods.java Wed Jul 05 21:04:26 2017 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,217 +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.MethodType;
-import java.util.LinkedList;
-import java.util.List;
-import jdk.internal.dynalink.linker.support.TypeUtilities;
-
-/**
- * Represents overloaded methods applicable to a specific call site signature.
- */
-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(final 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(final MethodType callSiteType, final 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(final MethodType callSiteType, final 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(final MethodType callSiteType, final 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;
- }
- };
-}