| /* |
| * Copyright 2000-2013 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.jetbrains.python.psi; |
| |
| import com.intellij.psi.PsiElement; |
| |
| /** How we refer to a name */ |
| public enum AccessDirection { |
| |
| /** Reference */ |
| READ, |
| |
| /** Target of assignment */ |
| WRITE, |
| |
| /** Target of del statement */ |
| DELETE; |
| |
| /** |
| * @param element |
| * @return the access direction of element, judging from surrounding statements. |
| */ |
| public static AccessDirection of(PyElement element) { |
| final PsiElement parent = element.getParent(); |
| if (element instanceof PyTargetExpression) { |
| return WRITE; |
| } |
| else if (parent instanceof PyAssignmentStatement) { |
| for (PyExpression target : ((PyAssignmentStatement)parent).getTargets()) { |
| if (target == element) { |
| return WRITE; |
| } |
| } |
| } |
| else if (parent instanceof PyDelStatement) { |
| return DELETE; |
| } |
| return READ; |
| } |
| } |