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.reference;
018
019import com.google.dart.compiler.backend.js.ast.JsExpression;
020import com.google.dart.compiler.backend.js.ast.JsName;
021import com.google.dart.compiler.backend.js.ast.JsNameRef;
022import org.jetbrains.annotations.NotNull;
023import org.jetbrains.annotations.Nullable;
024import org.jetbrains.jet.lang.descriptors.DeclarationDescriptor;
025import org.jetbrains.jet.lang.psi.JetSimpleNameExpression;
026import org.jetbrains.k2js.translate.context.TranslationContext;
027
028import static org.jetbrains.jet.lang.psi.JetPsiUtil.isBackingFieldReference;
029
030public final class ReferenceTranslator {
031
032    private ReferenceTranslator() {
033    }
034
035    @NotNull
036    public static JsExpression translateSimpleName(@NotNull JetSimpleNameExpression expression,
037            @NotNull TranslationContext context) {
038        return getAccessTranslator(expression, context).translateAsGet();
039    }
040
041    @NotNull
042    public static JsExpression translateAsFQReference(@NotNull DeclarationDescriptor referencedDescriptor,
043            @NotNull TranslationContext context) {
044        JsExpression qualifier = context.getQualifierForDescriptor(referencedDescriptor);
045        if (qualifier == null) {
046            return translateAsLocalNameReference(referencedDescriptor, context);
047        }
048        JsName referencedName = context.getNameForDescriptor(referencedDescriptor);
049        return new JsNameRef(referencedName, qualifier);
050    }
051
052    @NotNull
053    public static JsExpression translateAsLocalNameReference(@NotNull DeclarationDescriptor referencedDescriptor,
054            @NotNull TranslationContext context) {
055        //Preconditions.checkNotNull(referencedDescriptor, "No referencedDescriptor available");
056        return context.getNameForDescriptor(referencedDescriptor).makeRef();
057    }
058
059    @NotNull
060    public static AccessTranslator getAccessTranslator(@NotNull JetSimpleNameExpression referenceExpression,
061            @NotNull TranslationContext context) {
062        return getAccessTranslator(referenceExpression, null, context);
063    }
064
065    @NotNull
066    public static AccessTranslator getAccessTranslator(@NotNull JetSimpleNameExpression referenceExpression,
067            @Nullable JsExpression receiver,
068            @NotNull TranslationContext context) {
069        if (isBackingFieldReference(referenceExpression)) {
070            return BackingFieldAccessTranslator.newInstance(referenceExpression, context);
071        }
072        if (PropertyAccessTranslator.canBePropertyAccess(referenceExpression, context)) {
073            return PropertyAccessTranslator.newInstance(referenceExpression, receiver, CallType.NORMAL, context);
074        }
075        return ReferenceAccessTranslator.newInstance(referenceExpression, context);
076    }
077}