001    /*
002     * Copyright 2010-2015 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.kotlin.js.translate.reference;
018    
019    import com.google.dart.compiler.backend.js.ast.JsExpression;
020    import org.jetbrains.annotations.NotNull;
021    import org.jetbrains.kotlin.psi.*;
022    import org.jetbrains.kotlin.js.translate.context.TranslationContext;
023    import org.jetbrains.kotlin.js.translate.general.Translation;
024    import org.jetbrains.kotlin.js.translate.utils.TranslationUtils;
025    
026    import java.util.LinkedHashMap;
027    import java.util.Map;
028    
029    public final class AccessTranslationUtils {
030        private AccessTranslationUtils() {
031        }
032    
033        @NotNull
034        public static AccessTranslator getAccessTranslator(@NotNull KtExpression referenceExpression,
035                                                           @NotNull TranslationContext context) {
036            return getAccessTranslator(referenceExpression, context, false);
037        }
038    
039        @NotNull
040        public static AccessTranslator getAccessTranslator(@NotNull KtExpression referenceExpression,
041                @NotNull TranslationContext context, boolean forceOrderOfEvaluation) {
042            assert ((referenceExpression instanceof KtReferenceExpression) ||
043                    (referenceExpression instanceof KtQualifiedExpression));
044            if (referenceExpression instanceof KtQualifiedExpression) {
045                return QualifiedExpressionTranslator.getAccessTranslator((KtQualifiedExpression) referenceExpression, context, forceOrderOfEvaluation);
046            }
047            if (referenceExpression instanceof KtSimpleNameExpression) {
048                return ReferenceTranslator.getAccessTranslator((KtSimpleNameExpression) referenceExpression, context);
049            }
050            assert referenceExpression instanceof KtArrayAccessExpression;
051            return getArrayAccessTranslator((KtArrayAccessExpression) referenceExpression, context, forceOrderOfEvaluation);
052        }
053    
054        @NotNull
055        private static AccessTranslator getArrayAccessTranslator(
056                @NotNull KtArrayAccessExpression expression,
057                @NotNull TranslationContext context,
058                boolean forceOrderOfEvaluation
059        ) {
060            TranslationContext accessArrayContext;
061            if (forceOrderOfEvaluation) {
062                Map<KtExpression, JsExpression> indexesMap = new LinkedHashMap<KtExpression, JsExpression>();
063                for(KtExpression indexExpression : expression.getIndexExpressions()) {
064                    JsExpression jsIndexExpression = context.cacheExpressionIfNeeded(
065                            Translation.translateAsExpression(indexExpression, context));
066                    indexesMap.put(indexExpression, jsIndexExpression);
067                }
068                accessArrayContext = context.innerContextWithAliasesForExpressions(indexesMap);
069            } else {
070                accessArrayContext = context;
071            }
072    
073            return ArrayAccessTranslator.newInstance(expression, accessArrayContext);
074        }
075    
076        @NotNull
077        public static JsExpression translateAsGet(@NotNull KtExpression expression,
078                                                  @NotNull TranslationContext context) {
079            return (getAccessTranslator(expression, context)).translateAsGet();
080        }
081    }