| /* |
| * 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.scope.processor; |
| |
| import com.intellij.openapi.util.Key; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiSubstitutor; |
| import com.intellij.psi.ResolveState; |
| import com.intellij.psi.filters.ElementFilter; |
| import com.intellij.psi.scope.BaseScopeProcessor; |
| import com.intellij.psi.scope.PsiScopeProcessor; |
| import com.intellij.util.SmartList; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.List; |
| |
| /** |
| * @author ik |
| * Date: 13.02.2003 |
| */ |
| public class FilterScopeProcessor<T> extends BaseScopeProcessor { |
| protected final List<T> myResults; |
| private PsiElement myCurrentDeclarationHolder; |
| private final ElementFilter myFilter; |
| private final PsiScopeProcessor myProcessor; |
| |
| public FilterScopeProcessor(@NotNull ElementFilter filter, @NotNull List<T> container) { |
| this(filter, null, container); |
| } |
| |
| public FilterScopeProcessor(@NotNull ElementFilter filter, @NotNull PsiScopeProcessor processor) { |
| this(filter, processor, new SmartList<T>()); |
| } |
| |
| public FilterScopeProcessor(@NotNull ElementFilter filter) { |
| this(filter, null, new SmartList<T>()); |
| } |
| |
| public FilterScopeProcessor(@NotNull ElementFilter filter, @Nullable PsiScopeProcessor processor, @NotNull List<T> container) { |
| myFilter = filter; |
| myProcessor = processor; |
| myResults = container; |
| } |
| |
| @Override |
| public void handleEvent(@NotNull PsiScopeProcessor.Event event, Object associated) { |
| if (myProcessor != null) { |
| myProcessor.handleEvent(event, associated); |
| } |
| if (event == PsiScopeProcessor.Event.SET_DECLARATION_HOLDER && associated instanceof PsiElement) { |
| myCurrentDeclarationHolder = (PsiElement)associated; |
| } |
| } |
| |
| @Override |
| public boolean execute(@NotNull PsiElement element, @NotNull ResolveState state) { |
| if (myFilter.isAcceptable(element, myCurrentDeclarationHolder)) { |
| if (myProcessor != null) { |
| return myProcessor.execute(element, state); |
| } |
| add(element, state.get(PsiSubstitutor.KEY)); |
| } |
| return true; |
| } |
| |
| protected void add(@NotNull PsiElement element, @NotNull PsiSubstitutor substitutor) { |
| //noinspection unchecked |
| myResults.add((T)element); |
| } |
| |
| @Override |
| public <K> K getHint(@NotNull Key<K> hintKey) { |
| if (myProcessor != null) { |
| return myProcessor.getHint(hintKey); |
| } |
| return null; |
| } |
| |
| @NotNull |
| public List<T> getResults() { |
| return myResults; |
| } |
| } |