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.jet.lang.descriptors.impl;
018    
019    import org.jetbrains.annotations.NotNull;
020    import org.jetbrains.annotations.Nullable;
021    import org.jetbrains.jet.lang.descriptors.*;
022    import org.jetbrains.jet.lang.descriptors.annotations.Annotations;
023    import org.jetbrains.jet.lang.resolve.constants.CompileTimeConstant;
024    import org.jetbrains.jet.lang.resolve.name.Name;
025    import org.jetbrains.jet.lang.types.JetType;
026    import org.jetbrains.jet.storage.NullableLazyValue;
027    
028    import java.util.Collections;
029    import java.util.List;
030    import java.util.Set;
031    
032    public abstract class VariableDescriptorImpl extends DeclarationDescriptorNonRootImpl implements VariableDescriptor {
033        private JetType outType;
034        private NullableLazyValue<CompileTimeConstant<?>> compileTimeInitializer;
035    
036        public VariableDescriptorImpl(
037                @NotNull DeclarationDescriptor containingDeclaration,
038                @NotNull Annotations annotations,
039                @NotNull Name name,
040                @Nullable JetType outType,
041                @NotNull SourceElement source
042        ) {
043            super(containingDeclaration, annotations, name, source);
044    
045            this.outType = outType;
046        }
047    
048        @NotNull
049        @Override
050        public JetType getType() {
051            return outType;
052        }
053    
054        public void setOutType(JetType outType) {
055            assert this.outType == null;
056            this.outType = outType;
057        }
058    
059        @Nullable
060        @Override
061        public CompileTimeConstant<?> getCompileTimeInitializer() {
062            if (compileTimeInitializer != null) {
063                return compileTimeInitializer.invoke();
064            }
065            return null;
066        }
067    
068        public void setCompileTimeInitializer(@NotNull NullableLazyValue<CompileTimeConstant<?>> compileTimeInitializer) {
069            assert !isVar() : "Compile-time value for property initializer should be recorded only for final variables " + getName();
070            this.compileTimeInitializer = compileTimeInitializer;
071        }
072    
073        @Override
074        @NotNull
075        public VariableDescriptor getOriginal() {
076            return (VariableDescriptor) super.getOriginal();
077        }
078    
079        @NotNull
080        @Override
081        public List<ValueParameterDescriptor> getValueParameters() {
082            return Collections.emptyList();
083        }
084    
085        @Override
086        public boolean hasStableParameterNames() {
087            return false;
088        }
089    
090        @Override
091        public boolean hasSynthesizedParameterNames() {
092            return false;
093        }
094    
095        @NotNull
096        @Override
097        public Set<? extends CallableDescriptor> getOverriddenDescriptors() {
098            return Collections.emptySet();
099        }
100    
101        @NotNull
102        @Override
103        public List<TypeParameterDescriptor> getTypeParameters() {
104            return Collections.emptyList();
105        }
106    
107        @Override
108        public ReceiverParameterDescriptor getReceiverParameter() {
109            return ReceiverParameterDescriptor.NO_RECEIVER_PARAMETER;
110        }
111    
112        @Override
113        public ReceiverParameterDescriptor getExpectedThisObject() {
114            return ReceiverParameterDescriptor.NO_RECEIVER_PARAMETER;
115        }
116    
117        @NotNull
118        @Override
119        public JetType getReturnType() {
120            return getType();
121        }
122    }