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.annotations.Nullable;
022 import org.jetbrains.kotlin.descriptors.VariableDescriptor;
023 import org.jetbrains.kotlin.js.translate.callTranslator.CallTranslator;
024 import org.jetbrains.kotlin.js.translate.context.TemporaryVariable;
025 import org.jetbrains.kotlin.js.translate.context.TranslationContext;
026 import org.jetbrains.kotlin.js.translate.general.AbstractTranslator;
027 import org.jetbrains.kotlin.psi.JetReferenceExpression;
028 import org.jetbrains.kotlin.resolve.calls.callUtil.CallUtilPackage;
029 import org.jetbrains.kotlin.resolve.calls.model.ResolvedCall;
030 import org.jetbrains.kotlin.resolve.calls.model.VariableAsFunctionResolvedCall;
031
032 import java.util.Collections;
033 import java.util.List;
034
035 public class VariableAccessTranslator extends AbstractTranslator implements AccessTranslator {
036 public static VariableAccessTranslator newInstance(
037 @NotNull TranslationContext context,
038 @NotNull JetReferenceExpression referenceExpression,
039 @Nullable JsExpression receiver
040 ) {
041 ResolvedCall<?> resolvedCall = CallUtilPackage.getResolvedCallWithAssert(referenceExpression, context.bindingContext());
042 if (resolvedCall instanceof VariableAsFunctionResolvedCall) {
043 resolvedCall = ((VariableAsFunctionResolvedCall) resolvedCall).getVariableCall();
044 }
045 assert resolvedCall.getResultingDescriptor() instanceof VariableDescriptor;
046 return new VariableAccessTranslator(context, (ResolvedCall<? extends VariableDescriptor>) resolvedCall, receiver);
047 }
048
049
050 private final ResolvedCall<? extends VariableDescriptor> resolvedCall;
051 private final JsExpression receiver;
052
053 private VariableAccessTranslator(
054 @NotNull TranslationContext context,
055 @NotNull ResolvedCall<? extends VariableDescriptor> resolvedCall,
056 @Nullable JsExpression receiver
057 ) {
058 super(context);
059 this.receiver = receiver;
060 this.resolvedCall = resolvedCall;
061 }
062
063 @NotNull
064 @Override
065 public JsExpression translateAsGet() {
066 return CallTranslator.INSTANCE$.translateGet(context(), resolvedCall, receiver);
067 }
068
069 @NotNull
070 @Override
071 public JsExpression translateAsSet(@NotNull JsExpression setTo) {
072 return CallTranslator.INSTANCE$.translateSet(context(), resolvedCall, setTo, receiver);
073 }
074
075 @NotNull
076 @Override
077 public CachedAccessTranslator getCached() {
078 TemporaryVariable temporaryVariable = receiver == null ? null : context().declareTemporary(receiver);
079 return new CachedVariableAccessTranslator(context(), resolvedCall, temporaryVariable);
080 }
081
082 private static class CachedVariableAccessTranslator extends VariableAccessTranslator implements CachedAccessTranslator {
083 @Nullable
084 private final TemporaryVariable cachedReceiver;
085
086 public CachedVariableAccessTranslator(
087 @NotNull TranslationContext context,
088 @NotNull ResolvedCall<? extends VariableDescriptor> resolvedCall,
089 @Nullable TemporaryVariable cachedReceiver
090 ) {
091 super(context, resolvedCall, cachedReceiver == null ? null : cachedReceiver.reference());
092 this.cachedReceiver = cachedReceiver;
093 }
094
095 @NotNull
096 @Override
097 public List<TemporaryVariable> declaredTemporaries() {
098 return cachedReceiver == null ? Collections.<TemporaryVariable>emptyList() : Collections.singletonList(cachedReceiver);
099 }
100
101 @NotNull
102 @Override
103 public CachedAccessTranslator getCached() {
104 return this;
105 }
106 }
107
108 }