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 com.intellij.psi.NavigatablePsiElement;
020    import kotlin.Function0;
021    import org.jetbrains.annotations.NotNull;
022    import org.jetbrains.jet.lang.psi.JetDeclaration;
023    import org.jetbrains.jet.lang.psi.JetFile;
024    import org.jetbrains.jet.lang.resolve.name.FqName;
025    import org.jetbrains.jet.storage.NotNullLazyValue;
026    import org.jetbrains.jet.storage.StorageManager;
027    
028    import java.util.Collection;
029    
030    public class FileBasedPackageMemberDeclarationProvider extends AbstractPsiBasedDeclarationProvider implements PackageMemberDeclarationProvider {
031    
032        private final FqName fqName;
033        private final FileBasedDeclarationProviderFactory factory;
034        private final Collection<JetFile> packageFiles;
035        private final NotNullLazyValue<Collection<FqName>> allDeclaredPackages;
036    
037    
038        /*package*/ FileBasedPackageMemberDeclarationProvider(
039                @NotNull StorageManager storageManager,
040                @NotNull FqName _fqName,
041                @NotNull FileBasedDeclarationProviderFactory _factory,
042                @NotNull Collection<JetFile> packageFiles
043        ) {
044            super(storageManager);
045            this.fqName = _fqName;
046            this.factory = _factory;
047            this.packageFiles = packageFiles;
048            this.allDeclaredPackages = storageManager.createLazyValue(new Function0<Collection<FqName>>() {
049                @Override
050                public Collection<FqName> invoke() {
051                    return factory.getAllDeclaredSubPackagesOf(fqName);
052                }
053            });
054        }
055    
056        @Override
057        protected void doCreateIndex(@NotNull Index index) {
058            for (JetFile file : packageFiles) {
059                for (JetDeclaration declaration : file.getDeclarations()) {
060                    assert fqName.asString().equals(file.getPackageName()) : "Files declaration utils contains file with invalid package";
061                    index.putToIndex(declaration);
062                }
063            }
064        }
065    
066        @Override
067        public Collection<FqName> getAllDeclaredPackages() {
068            return allDeclaredPackages.invoke();
069        }
070    
071        @NotNull
072        @Override
073        public Collection<NavigatablePsiElement> getPackageDeclarations(FqName fqName) {
074            return factory.getPackageDeclarations(fqName);
075        }
076    
077        @NotNull
078        @Override
079        public Collection<JetFile> getPackageFiles() {
080            return packageFiles;
081        }
082    
083        @Override
084        public String toString() {
085            return "Declarations for package " + fqName;
086        }
087    }