001    /*
002     * Copyright 2010-2013 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.k2js.translate.initializer;
018    
019    import com.google.dart.compiler.backend.js.ast.JsStatement;
020    import org.jetbrains.annotations.NotNull;
021    import org.jetbrains.jet.lang.psi.*;
022    import org.jetbrains.k2js.translate.context.TranslationContext;
023    import org.jetbrains.k2js.translate.general.Translation;
024    import org.jetbrains.k2js.translate.general.TranslatorVisitor;
025    
026    import java.util.List;
027    
028    import static org.jetbrains.k2js.translate.general.Translation.translateAsStatement;
029    import static org.jetbrains.k2js.translate.initializer.InitializerUtils.generateInitializerForProperty;
030    import static org.jetbrains.k2js.translate.utils.BindingUtils.getPropertyDescriptor;
031    
032    public final class InitializerVisitor extends TranslatorVisitor<Void> {
033        private final List<JsStatement> result;
034    
035        public InitializerVisitor(List<JsStatement> result) {
036            this.result = result;
037        }
038    
039        @Override
040        public final Void visitProperty(@NotNull JetProperty property, @NotNull TranslationContext context) {
041            JetExpression initializer = property.getInitializer();
042            if (initializer != null) {
043                result.add(generateInitializerForProperty(context, getPropertyDescriptor(context.bindingContext(), property),
044                                                          Translation.translateAsExpression(initializer, context)));
045            }
046    
047            return null;
048        }
049    
050        @Override
051        public Void visitAnonymousInitializer(@NotNull JetClassInitializer initializer, @NotNull TranslationContext context) {
052            result.add(translateAsStatement(initializer.getBody(), context));
053            return null;
054        }
055    
056        @Override
057        // Not interested in other types of declarations, they do not contain initializers.
058        public Void visitDeclaration(@NotNull JetDeclaration expression, @NotNull TranslationContext context) {
059            return null;
060        }
061    
062        @Override
063        public Void visitObjectDeclaration(@NotNull JetObjectDeclaration declaration, @NotNull TranslationContext context) {
064            InitializerUtils.generate(declaration, result, null, context);
065            return null;
066        }
067    
068        @NotNull
069        private List<JsStatement> generateInitializerStatements(@NotNull List<JetDeclaration> declarations,
070                @NotNull TranslationContext context) {
071            for (JetDeclaration declaration : declarations) {
072                declaration.accept(this, context);
073            }
074            return result;
075        }
076    
077        @NotNull
078        public final List<JsStatement> traverseClass(@NotNull JetClassOrObject expression, @NotNull TranslationContext context) {
079            return generateInitializerStatements(expression.getDeclarations(), context);
080        }
081    }