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/*
 * Copyright 2010-2015 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jetbrains.kotlin.descriptors.impl;

import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.kotlin.descriptors.*;
import org.jetbrains.kotlin.descriptors.annotations.Annotations;
import org.jetbrains.kotlin.name.Name;
import org.jetbrains.kotlin.types.KotlinType;
import org.jetbrains.kotlin.types.typeUtil.TypeUtilsKt;

import java.util.Collection;
import java.util.Collections;
import java.util.List;

public abstract class VariableDescriptorImpl extends DeclarationDescriptorNonRootImpl implements VariableDescriptor {
    protected KotlinType outType;

    public VariableDescriptorImpl(
            @NotNull DeclarationDescriptor containingDeclaration,
            @NotNull Annotations annotations,
            @NotNull Name name,
            @Nullable KotlinType outType,
            @NotNull SourceElement source
    ) {
        super(containingDeclaration, annotations, name, source);

        this.outType = outType;
    }

    @NotNull
    @Override
    public KotlinType getType() {
        return outType;
    }

    public void setOutType(KotlinType outType) {
        assert this.outType == null || TypeUtilsKt.shouldBeUpdated(this.outType);
        this.outType = outType;
    }

    @Override
    @NotNull
    public VariableDescriptor getOriginal() {
        return (VariableDescriptor) super.getOriginal();
    }

    @NotNull
    @Override
    public List getValueParameters() {
        return Collections.emptyList();
    }

    @Override
    public boolean hasStableParameterNames() {
        return false;
    }

    @Override
    public boolean hasSynthesizedParameterNames() {
        return false;
    }

    @NotNull
    @Override
    public Collection getOverriddenDescriptors() {
        return Collections.emptySet();
    }

    @NotNull
    @Override
    public List getTypeParameters() {
        return Collections.emptyList();
    }

    @NotNull
    @Override
    public List getContextReceiverParameters() {
        return Collections.emptyList();
    }

    @Override
    public ReceiverParameterDescriptor getExtensionReceiverParameter() {
        return null;
    }

    @Override
    public ReceiverParameterDescriptor getDispatchReceiverParameter() {
        return null;
    }

    @NotNull
    @Override
    public KotlinType getReturnType() {
        return getType();
    }

    @Override
    public boolean isConst() {
        return false;
    }

    @Nullable
    @Override
    public  V getUserData(UserDataKey key) {
        return null;
    }
}