| /* |
| * Copyright 2000-2009 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.element; |
| |
| import com.intellij.psi.PsiClass; |
| import com.intellij.psi.PsiClassType; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiMethod; |
| import com.intellij.psi.filters.ElementFilter; |
| import com.intellij.psi.filters.position.PositionElementFilter; |
| import com.intellij.psi.util.MethodSignatureUtil; |
| import com.intellij.reference.SoftReference; |
| |
| /** |
| * Created by IntelliJ IDEA. |
| * User: ik |
| * Date: 26.02.2003 |
| * Time: 12:31:24 |
| * To change this template use Options | File Templates. |
| */ |
| public class ExcludeDeclaredFilter extends PositionElementFilter{ |
| public ExcludeDeclaredFilter(ElementFilter filter){ |
| setFilter(filter); |
| } |
| |
| SoftReference<PsiElement> myCachedVar = new SoftReference<PsiElement>(null); |
| SoftReference<PsiElement> myCurrentContext = new SoftReference<PsiElement>(null); |
| |
| @Override |
| public boolean isAcceptable(Object element, PsiElement context){ |
| PsiElement cachedVar = context; |
| |
| if(myCurrentContext.get() != context){ |
| myCurrentContext = new SoftReference<PsiElement>(context); |
| while(cachedVar != null && !(getFilter().isAcceptable(cachedVar, cachedVar.getContext()))) |
| cachedVar = cachedVar.getContext(); |
| myCachedVar = new SoftReference<PsiElement>(cachedVar); |
| } |
| |
| if (element instanceof PsiMethod && myCachedVar.get() instanceof PsiMethod) { |
| final PsiMethod currentMethod = (PsiMethod) element; |
| final PsiMethod candidate = (PsiMethod) myCachedVar.get(); |
| return !candidate.getManager().areElementsEquivalent(candidate, currentMethod) && !isOverridingMethod(currentMethod, candidate); |
| } |
| else if(element instanceof PsiClassType){ |
| final PsiClass psiClass = ((PsiClassType)element).resolve(); |
| return isAcceptable(psiClass, context); |
| } |
| else if(context != null){ |
| if(element instanceof PsiElement) |
| return !context.getManager().areElementsEquivalent(myCachedVar.get(), (PsiElement)element); |
| return true; |
| } |
| return true; |
| } |
| |
| //TODO check exotic conditions like overriding method in package local class from class in other package |
| private static boolean isOverridingMethod(final PsiMethod method, final PsiMethod candidate) { |
| if (method.getManager().areElementsEquivalent(method, candidate)) return false; |
| if (!MethodSignatureUtil.areSignaturesEqual(method,candidate)) return false; |
| final PsiClass candidateContainingClass = candidate.getContainingClass(); |
| return candidateContainingClass.isInheritor(method.getContainingClass(), true); |
| } |
| } |