001    /*
002     * Copyright 2010-2014 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.resolve.lazy.descriptors;
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.psi.JetDeclaration;
023    import org.jetbrains.jet.lang.resolve.lazy.ResolveSession;
024    import org.jetbrains.jet.lang.resolve.lazy.declarations.PackageMemberDeclarationProvider;
025    import org.jetbrains.jet.lang.resolve.name.Name;
026    import org.jetbrains.jet.lang.resolve.scopes.JetScope;
027    
028    import java.util.Collection;
029    import java.util.Collections;
030    import java.util.Set;
031    
032    public class LazyPackageMemberScope extends AbstractLazyMemberScope<PackageFragmentDescriptor, PackageMemberDeclarationProvider> {
033    
034        public LazyPackageMemberScope(@NotNull ResolveSession resolveSession,
035                @NotNull PackageMemberDeclarationProvider declarationProvider,
036                @NotNull PackageFragmentDescriptor thisPackage) {
037            super(resolveSession, declarationProvider, thisPackage, resolveSession.getTrace());
038        }
039    
040        @Nullable
041        @Override
042        public PackageViewDescriptor getPackage(@NotNull Name name) {
043            return null;
044        }
045    
046        @NotNull
047        @Override
048        protected JetScope getScopeForMemberDeclarationResolution(JetDeclaration declaration) {
049            return resolveSession.getScopeProvider().getFileScope(declaration.getContainingJetFile());
050        }
051    
052        @Override
053        protected ReceiverParameterDescriptor getImplicitReceiver() {
054            return ReceiverParameterDescriptor.NO_RECEIVER_PARAMETER;
055        }
056    
057        @Override
058        protected void getNonDeclaredFunctions(@NotNull Name name, @NotNull Set<FunctionDescriptor> result) {
059            // No extra functions
060        }
061    
062        @Override
063        protected void getNonDeclaredProperties(@NotNull Name name, @NotNull Set<VariableDescriptor> result) {
064            // No extra properties
065        }
066    
067        @NotNull
068        @Override
069        protected Collection<DeclarationDescriptor> computeExtraDescriptors() {
070            return Collections.emptyList();
071        }
072    
073        @Override
074        public String toString() {
075            // Do not add details here, they may compromise the laziness during debugging
076            return "lazy scope for package " + thisDescriptor.getName();
077        }
078    }