| /* |
| * Copyright 2016 The Bazel Authors. All rights reserved. |
| * |
| * 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.google.idea.blaze.base.lang.buildfile.completion; |
| |
| import static com.intellij.patterns.PlatformPatterns.psiElement; |
| |
| import com.intellij.patterns.ElementPattern; |
| import com.intellij.patterns.PatternCondition; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.util.ProcessingContext; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** Filter patterns used by completion contributors. */ |
| public class FilterPatterns { |
| |
| public static final ElementPattern<PsiElement> indexInParentsChildren(final int childIndex) { |
| return psiElement() |
| .with( |
| new PatternCondition<PsiElement>("isIndexInParentsChildren") { |
| @Override |
| public boolean accepts(@NotNull PsiElement psiElement, ProcessingContext context) { |
| final PsiElement parent = psiElement.getParent(); |
| if (parent != null) { |
| final PsiElement[] children = parent.getChildren(); |
| if (childIndex < children.length && psiElement.equals(children[childIndex])) { |
| return true; |
| } |
| } |
| return false; |
| } |
| }); |
| } |
| } |