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.descriptors;
018    
019    import org.jetbrains.annotations.NotNull;
020    import org.jetbrains.annotations.Nullable;
021    import org.jetbrains.jet.lang.descriptors.*;
022    import org.jetbrains.jet.lang.descriptors.annotations.Annotations;
023    import org.jetbrains.jet.lang.descriptors.impl.DeclarationDescriptorImpl;
024    import org.jetbrains.jet.lang.psi.JetFile;
025    import org.jetbrains.jet.lang.resolve.BindingContext;
026    import org.jetbrains.jet.lang.resolve.lazy.ForceResolveUtil;
027    import org.jetbrains.jet.lang.resolve.lazy.LazyEntity;
028    import org.jetbrains.jet.lang.resolve.lazy.ResolveSession;
029    import org.jetbrains.jet.lang.resolve.lazy.declarations.PackageMemberDeclarationProvider;
030    import org.jetbrains.jet.lang.resolve.name.FqName;
031    import org.jetbrains.jet.lang.resolve.scopes.JetScope;
032    import org.jetbrains.jet.lang.types.TypeSubstitutor;
033    
034    public class LazyPackageDescriptor extends DeclarationDescriptorImpl implements LazyEntity, PackageFragmentDescriptor {
035        private final ResolveSession resolveSession;
036        private final ModuleDescriptor module;
037        private final JetScope memberScope;
038        private final FqName fqName;
039        private final PackageMemberDeclarationProvider declarationProvider;
040    
041        public LazyPackageDescriptor(
042                @NotNull ModuleDescriptor module,
043                @NotNull FqName fqName,
044                @NotNull ResolveSession resolveSession,
045                @NotNull PackageMemberDeclarationProvider declarationProvider
046        ) {
047            super(Annotations.EMPTY, fqName.shortNameOrSpecial());
048            this.resolveSession = resolveSession;
049            this.module = module;
050            this.fqName = fqName;
051            this.declarationProvider = declarationProvider;
052    
053            this.memberScope = new LazyPackageMemberScope(resolveSession, declarationProvider, this);
054    
055            for (JetFile file : declarationProvider.getPackageFiles()) {
056                this.resolveSession.getTrace().record(BindingContext.FILE_TO_PACKAGE_FRAGMENT, file, this);
057            }
058        }
059    
060        @NotNull
061        @Override
062        public JetScope getMemberScope() {
063            return memberScope;
064        }
065    
066        @NotNull
067        @Override
068        public ModuleDescriptor getContainingDeclaration() {
069            return module;
070        }
071    
072        @Nullable
073        @Override
074        public DeclarationDescriptor substitute(@NotNull TypeSubstitutor substitutor) {
075            return this;
076        }
077    
078        @Override
079        public <R, D> R accept(DeclarationDescriptorVisitor<R, D> visitor, D data) {
080            return visitor.visitPackageFragmentDescriptor(this, data);
081        }
082    
083        @NotNull
084        @Override
085        public FqName getFqName() {
086            return fqName;
087        }
088    
089        @Override
090        public void forceResolveAllContents() {
091            ForceResolveUtil.forceResolveAllContents(memberScope);
092        }
093    
094        @NotNull
095        public PackageMemberDeclarationProvider getDeclarationProvider() {
096            return declarationProvider;
097        }
098    }