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/*
* Copyright 2000-2014 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.impl.search;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.progress.ProgressIndicatorProvider;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.Comparing;
import com.intellij.openapi.util.Computable;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.*;
import com.intellij.psi.impl.java.stubs.index.JavaAnonymousClassBaseRefOccurenceIndex;
import com.intellij.psi.impl.java.stubs.index.JavaSuperClassNameOccurenceIndex;
import com.intellij.psi.search.EverythingGlobalScope;
import com.intellij.psi.search.GlobalSearchScope;
import com.intellij.psi.search.SearchScope;
import com.intellij.psi.search.searches.AllClassesSearch;
import com.intellij.psi.search.searches.DirectClassInheritorsSearch;
import com.intellij.psi.util.PsiUtil;
import com.intellij.psi.util.PsiUtilCore;
import com.intellij.util.Processor;
import com.intellij.util.QueryExecutor;
import com.intellij.util.containers.ContainerUtil;
import com.intellij.util.containers.HashMap;
import org.jetbrains.annotations.NotNull;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;
/**
* @author max
*/
public class JavaDirectInheritorsSearcher implements QueryExecutor<PsiClass, DirectClassInheritorsSearch.SearchParameters> {
@Override
public boolean execute(@NotNull final DirectClassInheritorsSearch.SearchParameters p, @NotNull final Processor<PsiClass> consumer) {
final PsiClass aClass = p.getClassToProcess();
final SearchScope useScope = ApplicationManager.getApplication().runReadAction(new Computable<SearchScope>() {
@Override
public SearchScope compute() {
return aClass.getUseScope();
}
});
final String qualifiedName = ApplicationManager.getApplication().runReadAction(new Computable<String>() {
@Override
public String compute() {
return aClass.getQualifiedName();
}
});
final Project project = PsiUtilCore.getProjectInReadAction(aClass);
if (CommonClassNames.JAVA_LANG_OBJECT.equals(qualifiedName)) {
//[pasynkov]: WTF?
//final SearchScope scope = useScope.intersectWith(GlobalSearchScope.notScope(GlobalSearchScope.getScopeRestrictedByFileTypes(
// GlobalSearchScope.allScope(psiManager.getProject()), StdFileTypes.JSP, StdFileTypes.JSPX)));
return AllClassesSearch.search(useScope, project).forEach(new Processor<PsiClass>() {
@Override
public boolean process(final PsiClass psiClass) {
if (psiClass.isInterface()) {
return consumer.process(psiClass);
}
final PsiClass superClass = psiClass.getSuperClass();
if (superClass != null && CommonClassNames.JAVA_LANG_OBJECT.equals(ApplicationManager.getApplication().runReadAction(new Computable<String>() {
public String compute() {
return superClass.getQualifiedName();
}
}))) {
return consumer.process(psiClass);
}
return true;
}
});
}
final GlobalSearchScope scope = useScope instanceof GlobalSearchScope ? (GlobalSearchScope)useScope : new EverythingGlobalScope(project);
final String searchKey = ApplicationManager.getApplication().runReadAction(new Computable<String>() {
@Override
public String compute() {
return aClass.getName();
}
});
if (StringUtil.isEmpty(searchKey)) {
return true;
}
Collection<PsiReferenceList> candidates = ApplicationManager.getApplication().runReadAction(new Computable<Collection<PsiReferenceList>>() {
@Override
public Collection<PsiReferenceList> compute() {
return JavaSuperClassNameOccurenceIndex.getInstance().get(searchKey, project, scope);
}
});
Map<String, List<PsiClass>> classes = new HashMap<String, List<PsiClass>>();
for (final PsiReferenceList referenceList : candidates) {
ProgressIndicatorProvider.checkCanceled();
final PsiClass candidate = (PsiClass)ApplicationManager.getApplication().runReadAction(new Computable<PsiElement>() {
@Override
public PsiElement compute() {
return referenceList.getParent();
}
});
if (!checkInheritance(p, aClass, candidate)) continue;
String fqn = ApplicationManager.getApplication().runReadAction(new Computable<String>() {
@Override
public String compute() {
return candidate.getQualifiedName();
}
});
List<PsiClass> list = classes.get(fqn);
if (list == null) {
list = new ArrayList<PsiClass>();
classes.put(fqn, list);
}
list.add(candidate);
}
for (List<PsiClass> sameNamedClasses : classes.values()) {
if (!processSameNamedClasses(consumer, aClass, sameNamedClasses)) return false;
}
if (p.includeAnonymous()) {
Collection<PsiAnonymousClass> anonymousCandidates = ApplicationManager.getApplication().runReadAction(new Computable<Collection<PsiAnonymousClass>>() {
@Override
public Collection<PsiAnonymousClass> compute() {
return JavaAnonymousClassBaseRefOccurenceIndex.getInstance().get(searchKey, project, scope);
}
});
for (PsiAnonymousClass candidate : anonymousCandidates) {
ProgressIndicatorProvider.checkCanceled();
if (!checkInheritance(p, aClass, candidate)) continue;
if (!consumer.process(candidate)) return false;
}
boolean isEnum = ApplicationManager.getApplication().runReadAction(new Computable<Boolean>() {
@Override
public Boolean compute() {
return aClass.isEnum();
}
});
if (isEnum) {
// abstract enum can be subclassed in the body
PsiField[] fields = ApplicationManager.getApplication().runReadAction(new Computable<PsiField[]>() {
@Override
public PsiField[] compute() {
return aClass.getFields();
}
});
for (final PsiField field : fields) {
if (field instanceof PsiEnumConstant) {
PsiEnumConstantInitializer initializingClass =
ApplicationManager.getApplication().runReadAction(new Computable<PsiEnumConstantInitializer>() {
@Override
public PsiEnumConstantInitializer compute() {
return ((PsiEnumConstant)field).getInitializingClass();
}
});
if (initializingClass != null) {
if (!consumer.process(initializingClass)) return false;
}
}
}
}
}
return true;
}
private static boolean checkInheritance(final DirectClassInheritorsSearch.SearchParameters p, final PsiClass aClass, final PsiClass candidate) {
return ApplicationManager.getApplication().runReadAction(new Computable<Boolean>() {
@Override
public Boolean compute() {
return !p.isCheckInheritance() || candidate.isInheritor(aClass, false);
}
});
}
private static boolean processSameNamedClasses(Processor<PsiClass> consumer, PsiClass aClass, List<PsiClass> sameNamedClasses) {
// if there is a class from the same jar, prefer it
boolean sameJarClassFound = false;
VirtualFile jarFile = getJarFile(aClass);
if (jarFile != null) {
for (PsiClass sameNamedClass : sameNamedClasses) {
boolean fromSameJar = Comparing.equal(getJarFile(sameNamedClass), jarFile);
if (fromSameJar) {
sameJarClassFound = true;
if (!consumer.process(sameNamedClass)) return false;
}
}
}
return sameJarClassFound || ContainerUtil.process(sameNamedClasses, consumer);
}
private static VirtualFile getJarFile(final PsiClass aClass) {
return ApplicationManager.getApplication().runReadAction(new Computable<VirtualFile>() {
@Override
public VirtualFile compute() {
return PsiUtil.getJarFile(aClass);
}
});
}
}
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