| /* |
| * 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.codeInsight; |
| |
| import com.intellij.lang.injection.InjectedLanguageManager; |
| import com.intellij.openapi.application.ApplicationManager; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.util.Computable; |
| import com.intellij.psi.*; |
| import com.intellij.psi.search.LocalSearchScope; |
| import com.intellij.psi.search.SearchScope; |
| import com.intellij.psi.search.searches.ClassInheritorsSearch; |
| import com.intellij.psi.util.*; |
| import com.intellij.psi.xml.XmlAttribute; |
| import com.intellij.psi.xml.XmlAttributeValue; |
| import com.intellij.psi.xml.XmlTag; |
| import com.intellij.psi.xml.XmlText; |
| import com.intellij.util.Processor; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.*; |
| |
| public class TargetElementUtil extends TargetElementUtilBase { |
| public static final int NEW_AS_CONSTRUCTOR = 0x04; |
| public static final int THIS_ACCEPTED = 0x10; |
| public static final int SUPER_ACCEPTED = 0x20; |
| |
| @Override |
| public int getAllAccepted() { |
| return super.getAllAccepted() | NEW_AS_CONSTRUCTOR | THIS_ACCEPTED | SUPER_ACCEPTED; |
| } |
| |
| @Override |
| public int getDefinitionSearchFlags() { |
| return super.getDefinitionSearchFlags() | THIS_ACCEPTED | SUPER_ACCEPTED; |
| } |
| |
| @Override |
| public int getReferenceSearchFlags() { |
| return super.getReferenceSearchFlags() | NEW_AS_CONSTRUCTOR; |
| } |
| |
| @Nullable |
| @Override |
| public PsiElement findTargetElement(@NotNull final Editor editor, final int flags, final int offset) { |
| final PsiElement element = super.findTargetElement(editor, flags, offset); |
| if (element instanceof PsiKeyword) { |
| if (element.getParent() instanceof PsiThisExpression) { |
| if ((flags & THIS_ACCEPTED) == 0) return null; |
| PsiType type = ((PsiThisExpression)element.getParent()).getType(); |
| if (!(type instanceof PsiClassType)) return null; |
| return ((PsiClassType)type).resolve(); |
| } |
| |
| if (element.getParent() instanceof PsiSuperExpression) { |
| if ((flags & SUPER_ACCEPTED) == 0) return null; |
| PsiType type = ((PsiSuperExpression)element.getParent()).getType(); |
| if (!(type instanceof PsiClassType)) return null; |
| return ((PsiClassType)type).resolve(); |
| } |
| } |
| return element; |
| } |
| |
| @Override |
| protected boolean isAcceptableReferencedElement(final PsiElement element, final PsiElement referenceOrReferencedElement) { |
| return super.isAcceptableReferencedElement(element, referenceOrReferencedElement) && |
| !isEnumConstantReference(element, referenceOrReferencedElement); |
| } |
| |
| private static boolean isEnumConstantReference(final PsiElement element, final PsiElement referenceOrReferencedElement) { |
| return element != null && |
| element.getParent() instanceof PsiEnumConstant && |
| referenceOrReferencedElement instanceof PsiMethod && |
| ((PsiMethod)referenceOrReferencedElement).isConstructor(); |
| } |
| |
| @Override |
| @Nullable |
| protected PsiElement getReferenceOrReferencedElement(PsiFile file, Editor editor, int flags, int offset) { |
| PsiElement refElement = super.getReferenceOrReferencedElement(file, editor, flags, offset); |
| PsiReference ref = null; |
| if (refElement == null) { |
| ref = TargetElementUtilBase.findReference(editor, offset); |
| if (ref instanceof PsiJavaReference) { |
| refElement = ((PsiJavaReference)ref).advancedResolve(true).getElement(); |
| } |
| } |
| |
| if (refElement != null) { |
| if ((flags & NEW_AS_CONSTRUCTOR) != 0) { |
| if (ref == null) { |
| ref = TargetElementUtilBase.findReference(editor, offset); |
| } |
| if (ref != null) { |
| PsiElement parent = ref.getElement().getParent(); |
| if (parent instanceof PsiAnonymousClass) { |
| parent = parent.getParent(); |
| } |
| if (parent instanceof PsiNewExpression) { |
| PsiMethod constructor = ((PsiNewExpression)parent).resolveConstructor(); |
| if (constructor != null) { |
| refElement = constructor; |
| } else if (refElement instanceof PsiClass && ((PsiClass)refElement).getConstructors().length > 0) { |
| return null; |
| } |
| } |
| } |
| } |
| |
| if (refElement instanceof PsiMirrorElement) { |
| return ((PsiMirrorElement)refElement).getPrototype(); |
| } |
| |
| if (refElement instanceof PsiClass) { |
| final PsiFile containingFile = refElement.getContainingFile(); |
| if (containingFile != null && containingFile.getVirtualFile() == null) { // in mirror file of compiled class |
| String qualifiedName = ((PsiClass)refElement).getQualifiedName(); |
| if (qualifiedName == null) return null; |
| return JavaPsiFacade.getInstance(refElement.getProject()).findClass(qualifiedName, refElement.getResolveScope()); |
| } |
| } |
| } |
| return refElement; |
| } |
| |
| |
| @Nullable |
| @Override |
| protected PsiElement getNamedElement(final PsiElement element) { |
| PsiElement parent = element.getParent(); |
| if (element instanceof PsiIdentifier) { |
| if (parent instanceof PsiClass && element.equals(((PsiClass)parent).getNameIdentifier())) { |
| return parent; |
| } |
| else if (parent instanceof PsiVariable && element.equals(((PsiVariable)parent).getNameIdentifier())) { |
| return parent; |
| } |
| else if (parent instanceof PsiMethod && element.equals(((PsiMethod)parent).getNameIdentifier())) { |
| return parent; |
| } |
| else if (parent instanceof PsiLabeledStatement && element.equals(((PsiLabeledStatement)parent).getLabelIdentifier())) { |
| return parent; |
| } |
| } |
| //TODO: Code below this comment is very similar to parent code. We probably need to use "super()" instead, to prevent copy/paste in inheritors |
| else if ((parent = PsiTreeUtil.getParentOfType(element, PsiNamedElement.class, false)) != null) { |
| // A bit hacky depends on navigation offset correctly overridden |
| if (parent.getTextOffset() == element.getTextRange().getStartOffset() && !(parent instanceof XmlAttribute) |
| && !(parent instanceof PsiFile && InjectedLanguageManager.getInstance(parent.getProject()).isInjectedFragment((PsiFile)parent))) { |
| return parent; |
| } |
| } |
| return null; |
| } |
| |
| @Nullable |
| public static PsiReferenceExpression findReferenceExpression(Editor editor) { |
| final PsiReference ref = findReference(editor); |
| return ref instanceof PsiReferenceExpression ? (PsiReferenceExpression)ref : null; |
| } |
| |
| @Override |
| public PsiElement adjustReference(@NotNull final PsiReference ref) { |
| final PsiElement parent = ref.getElement().getParent(); |
| if (parent instanceof PsiMethodCallExpression) return parent; |
| return super.adjustReference(ref); |
| } |
| |
| @Nullable |
| @Override |
| public PsiElement adjustElement(final Editor editor, final int flags, final PsiElement element, final PsiElement contextElement) { |
| if (element != null) { |
| if (element instanceof PsiAnonymousClass) { |
| return ((PsiAnonymousClass)element).getBaseClassType().resolve(); |
| } |
| return element; |
| } |
| if (contextElement == null) return null; |
| final PsiElement parent = contextElement.getParent(); |
| if (parent instanceof XmlText || parent instanceof XmlAttributeValue) { |
| return TargetElementUtilBase.getInstance().findTargetElement(editor, flags, parent.getParent().getTextRange().getStartOffset() + 1); |
| } |
| else if (parent instanceof XmlTag || parent instanceof XmlAttribute) { |
| return TargetElementUtilBase.getInstance().findTargetElement(editor, flags, parent.getTextRange().getStartOffset() + 1); |
| } |
| return null; |
| } |
| |
| @Override |
| public Collection<PsiElement> getTargetCandidates(final PsiReference reference) { |
| PsiElement parent = reference.getElement().getParent(); |
| if (parent instanceof PsiCallExpression) { |
| PsiCallExpression callExpr = (PsiCallExpression)parent; |
| boolean allowStatics = false; |
| PsiExpression qualifier = callExpr instanceof PsiMethodCallExpression ? ((PsiMethodCallExpression)callExpr).getMethodExpression().getQualifierExpression() |
| : callExpr instanceof PsiNewExpression ? ((PsiNewExpression)callExpr).getQualifier() : null; |
| if (qualifier == null) { |
| allowStatics = true; |
| } |
| else if (qualifier instanceof PsiJavaCodeReferenceElement) { |
| PsiElement referee = ((PsiJavaCodeReferenceElement)qualifier).advancedResolve(true).getElement(); |
| if (referee instanceof PsiClass) allowStatics = true; |
| } |
| PsiResolveHelper helper = JavaPsiFacade.getInstance(parent.getProject()).getResolveHelper(); |
| PsiElement[] candidates = PsiUtil.mapElements(helper.getReferencedMethodCandidates(callExpr, false)); |
| final Collection<PsiElement> methods = new LinkedHashSet<PsiElement>(); |
| for (PsiElement candidate1 : candidates) { |
| PsiMethod candidate = (PsiMethod)candidate1; |
| if (candidate.hasModifierProperty(PsiModifier.STATIC) && !allowStatics) continue; |
| List<PsiMethod> supers = Arrays.asList(candidate.findSuperMethods()); |
| if (supers.isEmpty()) { |
| methods.add(candidate); |
| } |
| else { |
| methods.addAll(supers); |
| } |
| } |
| return methods; |
| } |
| |
| return super.getTargetCandidates(reference); |
| } |
| |
| @Override |
| public PsiElement getGotoDeclarationTarget(final PsiElement element, final PsiElement navElement) { |
| if (navElement == element && element instanceof PsiCompiledElement && element instanceof PsiMethod) { |
| PsiMethod method = (PsiMethod)element; |
| if (method.isConstructor() && method.getParameterList().getParametersCount() == 0) { |
| PsiClass aClass = method.getContainingClass(); |
| PsiElement navClass = aClass.getNavigationElement(); |
| if (aClass != navClass) return navClass; |
| } |
| } |
| return super.getGotoDeclarationTarget(element, navElement); |
| } |
| |
| @Override |
| public boolean includeSelfInGotoImplementation(@NotNull final PsiElement element) { |
| if (element instanceof PsiModifierListOwner && ((PsiModifierListOwner)element).hasModifierProperty(PsiModifier.ABSTRACT)) { |
| return false; |
| } |
| return super.includeSelfInGotoImplementation(element); |
| } |
| |
| @Override |
| public boolean acceptImplementationForReference(final PsiReference reference, final PsiElement element) { |
| if (reference instanceof PsiReferenceExpression && element instanceof PsiMember) { |
| return getMemberClass(reference, element) != null; |
| } |
| return super.acceptImplementationForReference(reference, element); |
| } |
| |
| private static PsiClass[] getMemberClass(final PsiReference reference, final PsiElement element) { |
| return ApplicationManager.getApplication().runReadAction(new Computable<PsiClass[]>() { |
| @Override |
| public PsiClass[] compute() { |
| PsiClass containingClass = ((PsiMember)element).getContainingClass(); |
| final PsiExpression expression = ((PsiReferenceExpression)reference).getQualifierExpression(); |
| PsiClass psiClass; |
| if (expression != null) { |
| psiClass = PsiUtil.resolveClassInType(expression.getType()); |
| } else { |
| if (element instanceof PsiClass) { |
| psiClass = (PsiClass)element; |
| final PsiElement resolve = reference.resolve(); |
| if (resolve instanceof PsiClass) { |
| containingClass = (PsiClass)resolve; |
| } |
| } else { |
| psiClass = PsiTreeUtil.getParentOfType((PsiReferenceExpression)reference, PsiClass.class); |
| } |
| } |
| |
| if (containingClass == null && psiClass == null) return PsiClass.EMPTY_ARRAY; |
| if (containingClass != null) { |
| PsiElementFindProcessor<PsiClass> processor1 = new PsiElementFindProcessor<PsiClass>(containingClass); |
| while (psiClass != null) { |
| if (!processor1.process(psiClass) || |
| !ClassInheritorsSearch.search(containingClass).forEach(new PsiElementFindProcessor<PsiClass>(psiClass)) || |
| !ClassInheritorsSearch.search(psiClass).forEach(processor1)) { |
| return new PsiClass[] {psiClass}; |
| } |
| psiClass = psiClass.getContainingClass(); |
| } |
| } |
| return null; |
| } |
| }); |
| } |
| |
| @Override |
| public SearchScope getSearchScope(Editor editor, PsiElement element) { |
| final PsiReferenceExpression referenceExpression = editor != null ? findReferenceExpression(editor) : null; |
| if (referenceExpression != null && element instanceof PsiMethod) { |
| final PsiClass[] memberClass = getMemberClass(referenceExpression, element); |
| if (memberClass != null && memberClass.length == 1) { |
| return CachedValuesManager.getCachedValue(referenceExpression, new CachedValueProvider<SearchScope>() { |
| @Nullable |
| @Override |
| public Result<SearchScope> compute() { |
| final List<PsiClass> classesToSearch = new ArrayList<PsiClass>(); |
| classesToSearch.addAll(ClassInheritorsSearch.search(memberClass[0], true).findAll()); |
| |
| final Set<PsiClass> supers = new HashSet<PsiClass>(); |
| for (PsiClass psiClass : classesToSearch) { |
| supers.addAll(InheritanceUtil.getSuperClasses(psiClass)); |
| } |
| classesToSearch.addAll(supers); |
| |
| return new Result<SearchScope>(new LocalSearchScope(PsiUtilCore.toPsiElementArray(classesToSearch)), PsiModificationTracker.JAVA_STRUCTURE_MODIFICATION_COUNT); |
| } |
| }); |
| } |
| } |
| return super.getSearchScope(editor, element); |
| } |
| |
| private static class PsiElementFindProcessor<T extends PsiClass> implements Processor<T> { |
| private final T myElement; |
| |
| public PsiElementFindProcessor(T t) { |
| myElement = t; |
| } |
| |
| @Override |
| public boolean process(T t) { |
| if (InheritanceUtil.isInheritorOrSelf(t, myElement, true)) return false; |
| return !myElement.getManager().areElementsEquivalent(myElement, t); |
| } |
| } |
| } |
