| /* |
| * Copyright 2016 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| * use this file except in compliance with the License. You may obtain a copy of |
| * the 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. |
| */ |
| package com.google.gwt.dev.jjs.impl; |
| |
| import com.google.gwt.dev.jjs.ast.Context; |
| import com.google.gwt.dev.jjs.ast.JMethod; |
| import com.google.gwt.dev.jjs.ast.JMethodCall; |
| import com.google.gwt.dev.jjs.ast.JModVisitor; |
| import com.google.gwt.dev.jjs.ast.JProgram; |
| import com.google.gwt.dev.jjs.ast.RuntimeConstants; |
| import com.google.gwt.thirdparty.guava.common.collect.ImmutableSet; |
| import com.google.gwt.thirdparty.guava.common.collect.Iterables; |
| import com.google.gwt.thirdparty.guava.common.collect.Sets; |
| |
| import java.util.Set; |
| |
| /** |
| * Replaces direct calls to native methods that override methods from java.lang.Object to directly |
| * call them through java.lang.Object. This makes sure that the calls are routed through the |
| * trampoline. |
| */ |
| public class ReplaceCallsToNativeJavaLangObjectOverrides { |
| |
| public static void exec(final JProgram program) { |
| final Set<JMethod> overridableJavaLangObjectMethods = ImmutableSet.of( |
| program.getIndexedMethodOrNull(RuntimeConstants.OBJECT_EQUALS), |
| program.getIndexedMethodOrNull(RuntimeConstants.OBJECT_HASHCODE), |
| program.getIndexedMethodOrNull(RuntimeConstants.OBJECT_TO_STRING)); |
| new JModVisitor() { |
| @Override |
| public void endVisit(JMethodCall x, Context ctx) { |
| JMethod targetMethod = x.getTarget(); |
| if (!targetMethod.isJsNative()) { |
| return; |
| } |
| |
| JMethod overridenMethod = Iterables.getOnlyElement( |
| Sets.intersection(targetMethod.getOverriddenMethods(), |
| overridableJavaLangObjectMethods), |
| null); |
| if (overridenMethod == null) { |
| return; |
| } |
| ctx.replaceMe( |
| new JMethodCall(x.getSourceInfo(), x.getInstance(), overridenMethod, x.getArgs())); |
| } |
| }.accept(program); |
| } |
| |
| } |