001    /*
002     * Copyright 2010-2015 JetBrains s.r.o.
003     *
004     * Licensed under the Apache License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     * http://www.apache.org/licenses/LICENSE-2.0
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    
017    package org.jetbrains.kotlin.js.translate.initializer;
018    
019    import com.google.dart.compiler.backend.js.ast.JsStatement;
020    import org.jetbrains.annotations.NotNull;
021    import org.jetbrains.kotlin.js.translate.context.TranslationContext;
022    import org.jetbrains.kotlin.js.translate.general.Translation;
023    import org.jetbrains.kotlin.js.translate.general.TranslatorVisitor;
024    import org.jetbrains.kotlin.psi.*;
025    
026    import java.util.List;
027    
028    import static org.jetbrains.kotlin.js.translate.general.Translation.translateAsStatementAndMergeInBlockIfNeeded;
029    import static org.jetbrains.kotlin.js.translate.initializer.InitializerUtils.generateInitializerForDelegate;
030    import static org.jetbrains.kotlin.js.translate.initializer.InitializerUtils.generateInitializerForProperty;
031    import static org.jetbrains.kotlin.js.translate.utils.BindingUtils.getPropertyDescriptor;
032    
033    public final class InitializerVisitor extends TranslatorVisitor<Void> {
034        private final List<JsStatement> result;
035    
036        public InitializerVisitor(List<JsStatement> result) {
037            this.result = result;
038        }
039    
040        @Override
041        protected Void emptyResult(@NotNull TranslationContext context) {
042            return null;
043        }
044    
045        @Override
046        public final Void visitProperty(@NotNull JetProperty property, @NotNull TranslationContext context) {
047            JetExpression initializer = property.getInitializer();
048            if (initializer != null) {
049                result.add(generateInitializerForProperty(context, getPropertyDescriptor(context.bindingContext(), property),
050                                                          Translation.translateAsExpression(initializer, context)));
051            }
052    
053            JsStatement delegate = generateInitializerForDelegate(context, property);
054            if (delegate != null) result.add(delegate);
055    
056            return null;
057        }
058    
059        @Override
060        public Void visitAnonymousInitializer(@NotNull JetClassInitializer initializer, @NotNull TranslationContext context) {
061            JetExpression initializerBody = initializer.getBody();
062            if (initializerBody != null) {
063                result.add(translateAsStatementAndMergeInBlockIfNeeded(initializerBody, context));
064            }
065            return null;
066        }
067    
068        @Override
069        // Not interested in other types of declarations, they do not contain initializers.
070        public Void visitDeclaration(@NotNull JetDeclaration expression, @NotNull TranslationContext context) {
071            return null;
072        }
073    
074        @Override
075        public Void visitObjectDeclaration(@NotNull JetObjectDeclaration declaration, @NotNull TranslationContext context) {
076            if (!declaration.isCompanion()) {
077                InitializerUtils.generateObjectInitializer(declaration, result, context);
078            }
079            return null;
080        }
081    
082        @Override
083        public Void visitSecondaryConstructor(@NotNull JetSecondaryConstructor constructor, TranslationContext data) {
084            return null;
085        }
086    }