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.declarations;
018    
019    import kotlin.Function0;
020    import org.jetbrains.annotations.NotNull;
021    import org.jetbrains.jet.lang.psi.JetDeclaration;
022    import org.jetbrains.jet.lang.psi.JetFile;
023    import org.jetbrains.jet.lang.resolve.name.FqName;
024    import org.jetbrains.jet.storage.NotNullLazyValue;
025    import org.jetbrains.jet.storage.StorageManager;
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> packageFiles;
034        private final NotNullLazyValue<Collection<FqName>> allDeclaredSubPackages;
035    
036    
037        /*package*/ FileBasedPackageMemberDeclarationProvider(
038                @NotNull StorageManager storageManager,
039                @NotNull FqName _fqName,
040                @NotNull FileBasedDeclarationProviderFactory _factory,
041                @NotNull Collection<JetFile> packageFiles
042        ) {
043            super(storageManager);
044            this.fqName = _fqName;
045            this.factory = _factory;
046            this.packageFiles = packageFiles;
047            this.allDeclaredSubPackages = storageManager.createLazyValue(new Function0<Collection<FqName>>() {
048                @Override
049                public Collection<FqName> invoke() {
050                    return factory.getAllDeclaredSubPackagesOf(fqName);
051                }
052            });
053        }
054    
055        @Override
056        protected void doCreateIndex(@NotNull Index index) {
057            for (JetFile file : packageFiles) {
058                for (JetDeclaration declaration : file.getDeclarations()) {
059                    assert fqName.equals(file.getPackageFqName()) : "Files declaration utils contains file with invalid package";
060                    index.putToIndex(declaration);
061                }
062            }
063        }
064    
065        @NotNull
066        @Override
067        public Collection<FqName> getAllDeclaredSubPackages() {
068            return allDeclaredSubPackages.invoke();
069        }
070    
071        @NotNull
072        @Override
073        public Collection<JetFile> getPackageFiles() {
074            return packageFiles;
075        }
076    
077        @Override
078        public String toString() {
079            return "Declarations for package " + fqName;
080        }
081    }