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.java.scope;
018    
019    import com.google.common.collect.Sets;
020    import com.intellij.openapi.progress.ProgressIndicatorProvider;
021    import com.intellij.psi.PsiClass;
022    import com.intellij.psi.PsiModifier;
023    import com.intellij.psi.PsiPackage;
024    import org.jetbrains.annotations.NotNull;
025    import org.jetbrains.jet.lang.descriptors.ClassDescriptor;
026    import org.jetbrains.jet.lang.descriptors.DeclarationDescriptor;
027    import org.jetbrains.jet.lang.descriptors.NamespaceDescriptor;
028    import org.jetbrains.jet.lang.resolve.java.*;
029    import org.jetbrains.jet.lang.resolve.name.FqName;
030    
031    import java.util.Collection;
032    
033    public final class ScopeUtils {
034        private ScopeUtils() {
035        }
036    
037        @NotNull
038        public static Collection<DeclarationDescriptor> computeAllPackageDeclarations(
039                PsiPackage psiPackage,
040                JavaSemanticServices javaSemanticServices
041        ) {
042            Collection<DeclarationDescriptor> result = Sets.newHashSet();
043            JavaDescriptorResolver descriptorResolver = javaSemanticServices.getDescriptorResolver();
044    
045            for (PsiPackage psiSubPackage : psiPackage.getSubPackages()) {
046                NamespaceDescriptor childNs = descriptorResolver.resolveNamespace(
047                        new FqName(psiSubPackage.getQualifiedName()), DescriptorSearchRule.IGNORE_IF_FOUND_IN_KOTLIN);
048                if (childNs != null) {
049                    result.add(childNs);
050                }
051            }
052    
053            for (PsiClass psiClass : javaSemanticServices.getPsiClassFinder().findPsiClasses(psiPackage)) {
054                if (PackageClassUtils.isPackageClass(psiClass)) {
055                    continue;
056                }
057    
058                if (psiClass instanceof JetJavaMirrorMarker) {
059                    continue;
060                }
061    
062                if (psiClass.hasModifierProperty(PsiModifier.PUBLIC)) {
063                    ProgressIndicatorProvider.checkCanceled();
064                    FqName fqName = new FqName(psiClass.getQualifiedName());
065                    ClassDescriptor classDescriptor = descriptorResolver.resolveClass(fqName, DescriptorSearchRule.IGNORE_IF_FOUND_IN_KOTLIN);
066                    if (classDescriptor != null) {
067                        result.add(classDescriptor);
068                    }
069    
070                    NamespaceDescriptor namespaceDescriptor = descriptorResolver.resolveNamespace(
071                            fqName, DescriptorSearchRule.IGNORE_IF_FOUND_IN_KOTLIN);
072                    if (namespaceDescriptor != null) {
073                        result.add(namespaceDescriptor);
074                    }
075                }
076            }
077            return result;
078        }
079    
080    }