| /* |
| * Copyright 2014 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.SourceOrigin; |
| import com.google.gwt.dev.jjs.ast.JArrayType; |
| import com.google.gwt.dev.jjs.ast.JCastMap; |
| import com.google.gwt.dev.jjs.ast.JDeclaredType; |
| import com.google.gwt.dev.jjs.ast.JProgram; |
| import com.google.gwt.dev.jjs.ast.JReferenceType; |
| import com.google.gwt.thirdparty.guava.common.collect.Maps; |
| |
| import java.util.Map; |
| |
| /** |
| * Builds exhaustive cast maps for class types defined in and array types used in this library. |
| */ |
| public class ComputeExhaustiveCastabilityInformation { |
| |
| public static void exec(JProgram program) { |
| new ComputeExhaustiveCastabilityInformation(program).execImpl(); |
| } |
| |
| private final Map<JReferenceType, JCastMap> castMaps = Maps.newIdentityHashMap(); |
| private final JProgram program; |
| |
| private ComputeExhaustiveCastabilityInformation(JProgram program) { |
| this.program = program; |
| } |
| |
| private void createCompleteCastMap(JReferenceType sourceType) { |
| castMaps.put(sourceType, new JCastMap(SourceOrigin.UNKNOWN, program.getTypeJavaLangObject(), |
| program.typeOracle.getCastableDestinationTypes(sourceType))); |
| } |
| |
| private void execImpl() { |
| // Builds cast maps for all types declared in this library. |
| for (JDeclaredType declaredType : program.getModuleDeclaredTypes()) { |
| createCompleteCastMap(declaredType); |
| } |
| |
| // Builds cast maps for all array types used in this library. |
| for (JArrayType arrayType : program.getAllArrayTypes()) { |
| if (program.typeOracle.isInstantiatedType(arrayType)) { |
| createCompleteCastMap(arrayType); |
| } |
| } |
| |
| // Saves the constructed cast maps. |
| program.initTypeInfo(castMaps); |
| } |
| } |