java/java-impl/src/com/intellij/codeInsight/navigation/MethodImplementationsSearch.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.intellij.codeInsight.navigation;
  17
  18 import com.intellij.psi.PsiElement;
  19 import com.intellij.psi.PsiMethod;
  20 import com.intellij.psi.search.searches.OverridingMethodsSearch;
  21 import com.intellij.util.QueryExecutor;
  22 import com.intellij.util.Processor;
  23
  24 import java.util.ArrayList;
  25
  26 public class MethodImplementationsSearch implements QueryExecutor<PsiElement, PsiElement> {
  27   public boolean execute(final PsiElement sourceElement, final Processor<PsiElement> consumer) {
  28     if (sourceElement instanceof PsiMethod) {
  29       for (PsiElement implementation : getMethodImplementations((PsiMethod)sourceElement)) {
  30         if ( ! consumer.process(implementation) ) {
  31           return false;
  32         }
  33       }
  34     }
  35     return true;
  36   }
  37
  38   public static void getOverridingMethods(PsiMethod method, ArrayList<PsiMethod> list) {
  39     for (PsiMethod psiMethod : OverridingMethodsSearch.search(method)) {
  40       list.add(psiMethod);
  41     }
  42   }
  43
  44   public static PsiMethod[] getMethodImplementations(final PsiMethod method) {
  45     ArrayList<PsiMethod> result = new ArrayList<PsiMethod>();
  46
  47     getOverridingMethods(method, result);
  48     return result.toArray(new PsiMethod[result.size()]);
  49   }
  50 }