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
017package org.jetbrains.k2js.translate.initializer;
018
019import com.google.dart.compiler.backend.js.ast.JsStatement;
020import org.jetbrains.annotations.NotNull;
021import org.jetbrains.jet.lang.psi.*;
022import org.jetbrains.k2js.translate.context.TranslationContext;
023import org.jetbrains.k2js.translate.general.Translation;
024import org.jetbrains.k2js.translate.general.TranslatorVisitor;
025
026import java.util.List;
027
028import static org.jetbrains.k2js.translate.general.Translation.translateAsStatement;
029import static org.jetbrains.k2js.translate.initializer.InitializerUtils.generateInitializerForProperty;
030import static org.jetbrains.k2js.translate.utils.BindingUtils.getPropertyDescriptor;
031
032public 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}