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.resolve.scopes;
018    
019    import kotlin.KotlinPackage;
020    import org.jetbrains.annotations.NotNull;
021    import org.jetbrains.jet.lang.descriptors.ClassDescriptor;
022    import org.jetbrains.jet.lang.descriptors.ClassifierDescriptor;
023    import org.jetbrains.jet.lang.descriptors.DeclarationDescriptor;
024    import org.jetbrains.jet.lang.descriptors.ReceiverParameterDescriptor;
025    import org.jetbrains.jet.lang.resolve.name.Name;
026    
027    import java.util.Collection;
028    import java.util.Collections;
029    import java.util.List;
030    
031    public class InnerClassesScopeWrapper extends AbstractScopeAdapter {
032        private final JetScope actualScope;
033    
034        public InnerClassesScopeWrapper(@NotNull JetScope actualScope) {
035            this.actualScope = actualScope;
036        }
037    
038        @NotNull
039        @Override
040        protected JetScope getWorkerScope() {
041            return actualScope;
042        }
043    
044        @Override
045        public ClassifierDescriptor getClassifier(@NotNull Name name) {
046            ClassifierDescriptor classifier = actualScope.getClassifier(name);
047            return classifier instanceof ClassDescriptor ? classifier : null;
048        }
049    
050        @NotNull
051        @Override
052        @SuppressWarnings("unchecked")
053        public Collection<DeclarationDescriptor> getDeclarationsByLabel(@NotNull Name labelName) {
054            return (Collection) KotlinPackage.filterIsInstance(actualScope.getDeclarationsByLabel(labelName), ClassDescriptor.class);
055        }
056    
057        @NotNull
058        @Override
059        @SuppressWarnings("unchecked")
060        public Collection<DeclarationDescriptor> getAllDescriptors() {
061            return (Collection) KotlinPackage.filterIsInstance(actualScope.getAllDescriptors(), ClassDescriptor.class);
062        }
063    
064        @NotNull
065        @Override
066        public List<ReceiverParameterDescriptor> getImplicitReceiversHierarchy() {
067            return Collections.emptyList();
068        }
069    
070        @Override
071        public String toString() {
072            return "Classes from " + actualScope;
073        }
074    }