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.lazy.declarations;
018    
019    import com.intellij.openapi.util.Computable;
020    import org.jetbrains.annotations.NotNull;
021    import org.jetbrains.jet.lang.psi.*;
022    import org.jetbrains.jet.lang.resolve.lazy.storage.NotNullLazyValue;
023    import org.jetbrains.jet.lang.resolve.lazy.storage.StorageManager;
024    import org.jetbrains.jet.lang.resolve.name.FqName;
025    import org.jetbrains.jet.lang.resolve.name.Name;
026    
027    import java.util.Collection;
028    
029    public class FileBasedPackageMemberDeclarationProvider extends AbstractPsiBasedDeclarationProvider implements PackageMemberDeclarationProvider {
030    
031        private final FqName fqName;
032        private final FileBasedDeclarationProviderFactory factory;
033        private final Collection<JetFile> allFiles;
034        private final NotNullLazyValue<Collection<FqName>> allDeclaredPackages;
035    
036    
037        /*package*/ FileBasedPackageMemberDeclarationProvider(
038                @NotNull StorageManager storageManager,
039                @NotNull FqName _fqName,
040                @NotNull FileBasedDeclarationProviderFactory _factory,
041                @NotNull Collection<JetFile> allFiles
042        ) {
043            super(storageManager);
044            this.fqName = _fqName;
045            this.factory = _factory;
046            this.allFiles = allFiles;
047            this.allDeclaredPackages = storageManager.createLazyValue(new Computable<Collection<FqName>>() {
048                @Override
049                public Collection<FqName> compute() {
050                    return factory.getAllDeclaredSubPackagesOf(fqName);
051                }
052            });
053        }
054    
055        @Override
056        protected void doCreateIndex(@NotNull Index index) {
057            for (JetFile file : allFiles) {
058                for (JetDeclaration declaration : file.getDeclarations()) {
059                    index.putToIndex(declaration);
060                }
061            }
062        }
063    
064        @Override
065        public boolean isPackageDeclared(@NotNull Name name) {
066            return factory.isPackageDeclared(fqName.child(name));
067        }
068    
069        @Override
070        public Collection<FqName> getAllDeclaredPackages() {
071            return allDeclaredPackages.compute();
072        }
073    
074        @Override
075        public String toString() {
076            return "Declarations for package " + fqName;
077        }
078    }