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 org.jetbrains.annotations.NotNull;
021    import org.jetbrains.annotations.Nullable;
022    import org.jetbrains.jet.lang.descriptors.DeclarationDescriptor;
023    import org.jetbrains.jet.lang.descriptors.FunctionDescriptor;
024    import org.jetbrains.jet.lang.descriptors.VariableDescriptor;
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 alias = context.getAliasForDescriptor(referencedDescriptor);
045            return alias != null ? alias : context.getQualifiedReference(referencedDescriptor);
046        }
047    
048        @NotNull
049        public static JsExpression translateAsLocalNameReference(@NotNull DeclarationDescriptor descriptor,
050                @NotNull TranslationContext context) {
051            if (descriptor instanceof FunctionDescriptor || descriptor instanceof VariableDescriptor) {
052                JsExpression alias = context.getAliasForDescriptor(descriptor);
053                if (alias != null) {
054                    return alias;
055                }
056            }
057            return context.getNameForDescriptor(descriptor).makeRef();
058        }
059    
060        @NotNull
061        public static AccessTranslator getAccessTranslator(@NotNull JetSimpleNameExpression referenceExpression,
062                @NotNull TranslationContext context) {
063            return getAccessTranslator(referenceExpression, null, context);
064        }
065    
066        @NotNull
067        public static AccessTranslator getAccessTranslator(@NotNull JetSimpleNameExpression referenceExpression,
068                @Nullable JsExpression receiver,
069                @NotNull TranslationContext context) {
070            if (isBackingFieldReference(referenceExpression)) {
071                return BackingFieldAccessTranslator.newInstance(referenceExpression, context);
072            }
073            if (PropertyAccessTranslator.canBePropertyAccess(referenceExpression, context)) {
074                return PropertyAccessTranslator.newInstance(referenceExpression, receiver, CallType.NORMAL, context);
075            }
076            if (ClassObjectAccessTranslator.isClassObjectReference(referenceExpression, context)) {
077                return ClassObjectAccessTranslator.newInstance(referenceExpression, context);
078            }
079            return ReferenceAccessTranslator.newInstance(referenceExpression, context);
080        }
081    }