| /* |
| * 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.scope.conflictResolvers; |
| |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiMethod; |
| import com.intellij.psi.infos.CandidateInfo; |
| import com.intellij.psi.infos.MethodCandidateInfo; |
| import com.intellij.psi.scope.PsiConflictResolver; |
| import com.intellij.psi.util.PsiUtilCore; |
| import com.intellij.util.containers.HashMap; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * Created by IntelliJ IDEA. |
| * User: ik |
| * Date: 31.03.2003 |
| * Time: 17:21:42 |
| * To change this template use Options | File Templates. |
| */ |
| public class DuplicateConflictResolver implements PsiConflictResolver{ |
| public static final DuplicateConflictResolver INSTANCE = new DuplicateConflictResolver(); |
| |
| private DuplicateConflictResolver() { |
| } |
| |
| @Override |
| public CandidateInfo resolveConflict(@NotNull List<CandidateInfo> conflicts){ |
| if (conflicts.size() == 1) return conflicts.get(0); |
| final Map<Object, CandidateInfo> uniqueItems = new HashMap<Object, CandidateInfo>(); |
| for (CandidateInfo info : conflicts) { |
| final PsiElement element = info.getElement(); |
| Object key; |
| if (element instanceof PsiMethod) { |
| key = ((PsiMethod)element).getSignature(((MethodCandidateInfo)info).getSubstitutor(false)); |
| } |
| else { |
| key = PsiUtilCore.getName(element); |
| } |
| |
| if (!uniqueItems.containsKey(key)) { |
| uniqueItems.put(key, info); |
| } |
| } |
| |
| if(uniqueItems.size() == 1) return uniqueItems.values().iterator().next(); |
| return null; |
| } |
| |
| } |