| /* |
| * Copyright 2000-2011 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.psi.filters.getters; |
| |
| import com.intellij.codeInsight.CodeInsightUtil; |
| import com.intellij.codeInsight.completion.CompletionUtil; |
| import com.intellij.codeInsight.completion.JavaCompletionUtil; |
| import com.intellij.codeInsight.completion.PrefixMatcher; |
| import com.intellij.codeInsight.completion.StaticMemberProcessor; |
| import com.intellij.codeInsight.lookup.AutoCompletionPolicy; |
| import com.intellij.codeInsight.lookup.LookupElement; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.util.Key; |
| import com.intellij.psi.*; |
| import com.intellij.psi.filters.TrueFilter; |
| import com.intellij.psi.impl.java.stubs.index.JavaStaticMemberTypeIndex; |
| import com.intellij.psi.scope.processor.FilterScopeProcessor; |
| import com.intellij.psi.search.GlobalSearchScope; |
| import com.intellij.psi.util.InheritanceUtil; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.psi.util.PsiUtil; |
| import com.intellij.util.Consumer; |
| import com.intellij.util.PairConsumer; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.*; |
| |
| /** |
| * @author ik |
| * @author peter |
| */ |
| public abstract class MembersGetter { |
| public static final Key<Boolean> EXPECTED_TYPE_MEMBER = Key.create("EXPECTED_TYPE_MEMBER"); |
| private final Set<PsiMember> myImportedStatically = new HashSet<PsiMember>(); |
| private final List<PsiClass> myPlaceClasses = new ArrayList<PsiClass>(); |
| private final List<PsiMethod> myPlaceMethods = new ArrayList<PsiMethod>(); |
| protected final PsiElement myPlace; |
| |
| protected MembersGetter(StaticMemberProcessor processor, @NotNull final PsiElement place) { |
| myPlace = place; |
| processor.processMembersOfRegisteredClasses(PrefixMatcher.ALWAYS_TRUE, new PairConsumer<PsiMember, PsiClass>() { |
| @Override |
| public void consume(PsiMember member, PsiClass psiClass) { |
| myImportedStatically.add(member); |
| } |
| }); |
| |
| PsiClass current = PsiTreeUtil.getContextOfType(place, PsiClass.class); |
| while (current != null) { |
| current = CompletionUtil.getOriginalOrSelf(current); |
| myPlaceClasses.add(current); |
| current = PsiTreeUtil.getContextOfType(current, PsiClass.class); |
| } |
| |
| PsiMethod eachMethod = PsiTreeUtil.getContextOfType(place, PsiMethod.class); |
| while (eachMethod != null) { |
| eachMethod = CompletionUtil.getOriginalOrSelf(eachMethod); |
| myPlaceMethods.add(eachMethod); |
| eachMethod = PsiTreeUtil.getContextOfType(eachMethod, PsiMethod.class); |
| } |
| |
| } |
| |
| private boolean mayProcessMembers(@Nullable PsiClass psiClass) { |
| if (psiClass == null) { |
| return false; |
| } |
| |
| for (PsiClass placeClass : myPlaceClasses) { |
| if (InheritanceUtil.isInheritorOrSelf(placeClass, psiClass, true)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| public void processMembers(final Consumer<LookupElement> results, @Nullable final PsiClass where, |
| final boolean acceptMethods, final boolean searchInheritors) { |
| if (where == null || isPrimitiveClass(where)) return; |
| |
| final boolean searchFactoryMethods = searchInheritors && |
| !CommonClassNames.JAVA_LANG_OBJECT.equals(where.getQualifiedName()) && |
| !isPrimitiveClass(where); |
| |
| final Project project = myPlace.getProject(); |
| final GlobalSearchScope scope = myPlace.getResolveScope(); |
| |
| final PsiClassType baseType = JavaPsiFacade.getElementFactory(project).createType(where); |
| Consumer<PsiType> consumer = new Consumer<PsiType>() { |
| @Override |
| public void consume(PsiType psiType) { |
| PsiClass psiClass = PsiUtil.resolveClassInType(psiType); |
| if (psiClass == null) { |
| return; |
| } |
| psiClass = CompletionUtil.getOriginalOrSelf(psiClass); |
| if (mayProcessMembers(psiClass)) { |
| final FilterScopeProcessor<PsiElement> declProcessor = new FilterScopeProcessor<PsiElement>(TrueFilter.INSTANCE); |
| psiClass.processDeclarations(declProcessor, ResolveState.initial(), null, myPlace); |
| doProcessMembers(acceptMethods, results, psiType == baseType, declProcessor.getResults()); |
| |
| String name = psiClass.getName(); |
| if (name != null && searchFactoryMethods) { |
| Collection<PsiMember> factoryMethods = JavaStaticMemberTypeIndex.getInstance().getStaticMembers(name, project, scope); |
| doProcessMembers(acceptMethods, results, false, factoryMethods); |
| } |
| } |
| } |
| }; |
| consumer.consume(baseType); |
| if (searchInheritors && !CommonClassNames.JAVA_LANG_OBJECT.equals(where.getQualifiedName())) { |
| CodeInsightUtil.processSubTypes(baseType, myPlace, true, PrefixMatcher.ALWAYS_TRUE, consumer); |
| } |
| } |
| |
| private static boolean isPrimitiveClass(PsiClass where) { |
| String qname = where.getQualifiedName(); |
| if (qname == null || !qname.startsWith("java.lang.")) return false; |
| return CommonClassNames.JAVA_LANG_STRING.equals(qname) || InheritanceUtil.isInheritor(where, CommonClassNames.JAVA_LANG_NUMBER); |
| } |
| |
| private void doProcessMembers(boolean acceptMethods, |
| Consumer<LookupElement> results, |
| boolean isExpectedTypeMember, Collection<? extends PsiElement> declarations) { |
| for (final PsiElement result : declarations) { |
| if (result instanceof PsiMember && !(result instanceof PsiClass)) { |
| final PsiMember member = (PsiMember)result; |
| if (!member.hasModifierProperty(PsiModifier.STATIC)) continue; |
| if (result instanceof PsiField && !member.hasModifierProperty(PsiModifier.FINAL)) continue; |
| if (result instanceof PsiMethod && (!acceptMethods || myPlaceMethods.contains(result))) continue; |
| if (JavaCompletionUtil.isInExcludedPackage(member, false) || myImportedStatically.contains(member)) continue; |
| |
| if (!JavaPsiFacade.getInstance(myPlace.getProject()).getResolveHelper().isAccessible(member, myPlace, null)) { |
| continue; |
| } |
| |
| final LookupElement item = result instanceof PsiMethod ? createMethodElement((PsiMethod)result) : createFieldElement((PsiField)result); |
| if (item != null) { |
| item.putUserData(EXPECTED_TYPE_MEMBER, isExpectedTypeMember); |
| results.consume(AutoCompletionPolicy.NEVER_AUTOCOMPLETE.applyPolicy(item)); |
| } |
| } |
| } |
| } |
| |
| @Nullable |
| protected abstract LookupElement createFieldElement(PsiField field); |
| |
| @Nullable |
| protected abstract LookupElement createMethodElement(PsiMethod method); |
| } |