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.reference;
018    
019    import com.google.dart.compiler.backend.js.ast.JsExpression;
020    import com.google.dart.compiler.backend.js.ast.JsName;
021    import com.google.dart.compiler.backend.js.ast.JsNameRef;
022    import org.jetbrains.annotations.NotNull;
023    import org.jetbrains.annotations.Nullable;
024    import org.jetbrains.jet.lang.descriptors.DeclarationDescriptor;
025    import org.jetbrains.jet.lang.psi.JetSimpleNameExpression;
026    import org.jetbrains.k2js.translate.context.TranslationContext;
027    
028    import static org.jetbrains.jet.lang.psi.JetPsiUtil.isBackingFieldReference;
029    
030    public 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    }