| /* |
| * 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.findusages; |
| |
| import com.google.idea.blaze.base.lang.buildfile.psi.AugmentedAssignmentStatement; |
| import com.google.idea.blaze.base.lang.buildfile.psi.ReferenceExpression; |
| import com.google.idea.blaze.base.lang.buildfile.psi.TargetExpression; |
| import com.google.idea.blaze.base.lang.buildfile.psi.util.PsiUtils; |
| import com.intellij.codeInsight.highlighting.ReadWriteAccessDetector; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiReference; |
| |
| /** Used by find usages tools. */ |
| public class BuildReadWriteAccessDetector extends ReadWriteAccessDetector { |
| @Override |
| public boolean isReadWriteAccessible(PsiElement element) { |
| return element instanceof TargetExpression || element instanceof ReferenceExpression; |
| } |
| |
| @Override |
| public boolean isDeclarationWriteAccess(PsiElement element) { |
| return element instanceof TargetExpression; |
| } |
| |
| @Override |
| public Access getReferenceAccess(PsiElement referencedElement, PsiReference reference) { |
| return getExpressionAccess(reference.getElement()); |
| } |
| |
| @Override |
| public Access getExpressionAccess(PsiElement expression) { |
| if (isDeclarationWriteAccess(expression)) { |
| return Access.Write; |
| } |
| if (expression instanceof ReferenceExpression) { |
| if (PsiUtils.getParentOfType(expression, AugmentedAssignmentStatement.class, true) != null) { |
| return Access.ReadWrite; |
| } |
| } |
| return Access.Read; |
| } |
| } |