001    /*
002     * Copyright 2010-2015 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.kotlin.resolve.lazy.declarations;
018    
019    import kotlin.jvm.functions.Function1;
020    import org.jetbrains.annotations.NotNull;
021    import org.jetbrains.annotations.Nullable;
022    import org.jetbrains.kotlin.name.FqName;
023    import org.jetbrains.kotlin.psi.KtFile;
024    import org.jetbrains.kotlin.storage.MemoizedFunctionToNullable;
025    import org.jetbrains.kotlin.storage.StorageManager;
026    
027    public abstract class AbstractDeclarationProviderFactory implements DeclarationProviderFactory {
028        private final MemoizedFunctionToNullable<FqName, PackageMemberDeclarationProvider> packageDeclarationProviders;
029    
030        public AbstractDeclarationProviderFactory(@NotNull StorageManager storageManager) {
031            this.packageDeclarationProviders =
032                    storageManager.createMemoizedFunctionWithNullableValues(new Function1<FqName, PackageMemberDeclarationProvider>() {
033                        @Override
034                        public PackageMemberDeclarationProvider invoke(FqName fqName) {
035                            return createPackageMemberDeclarationProvider(fqName);
036                        }
037                    });
038        }
039    
040        @Nullable
041        protected abstract PackageMemberDeclarationProvider createPackageMemberDeclarationProvider(@NotNull FqName name);
042    
043        @Override
044        public PackageMemberDeclarationProvider getPackageMemberDeclarationProvider(@NotNull FqName packageFqName) {
045            return packageDeclarationProviders.invoke(packageFqName);
046        }
047    
048        @Override
049        public void diagnoseMissingPackageFragment(KtFile file) {
050            throw new IllegalStateException("Cannot find package fragment for file " + file.getName() + " with package " + file.getPackageFqName());
051        }
052    }