| /* |
| * 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.position; |
| |
| import com.intellij.patterns.ObjectPattern; |
| import com.intellij.patterns.InitialPatternCondition; |
| import com.intellij.util.ProcessingContext; |
| import com.intellij.psi.filters.ElementFilter; |
| import com.intellij.psi.PsiElement; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * @author peter |
| */ |
| public class FilterPattern extends ObjectPattern<Object,FilterPattern> { |
| @Nullable private final ElementFilter myFilter; |
| |
| public FilterPattern(@Nullable final ElementFilter filter) { |
| super(new InitialPatternCondition<Object>(Object.class) { |
| @Override |
| public boolean accepts(@Nullable final Object o, final ProcessingContext context) { |
| return filter == null || |
| o != null && |
| filter.isClassAcceptable(o.getClass()) && |
| filter.isAcceptable(o, o instanceof PsiElement ? (PsiElement)o : null); |
| } |
| }); |
| myFilter = filter; |
| } |
| |
| public boolean equals(final Object o) { |
| if (this == o) return true; |
| if (!(o instanceof FilterPattern)) return false; |
| |
| final FilterPattern that = (FilterPattern)o; |
| |
| if (myFilter != null ? !myFilter.equals(that.myFilter) : that.myFilter != null) return false; |
| |
| return true; |
| } |
| |
| public int hashCode() { |
| return (myFilter != null ? myFilter.hashCode() : 0); |
| } |
| |
| @Override |
| public String toString() { |
| return super.toString() + " & " + myFilter; |
| } |
| } |