| /* |
| * Copyright 2003-2013 Dave Griffith, Bas Leijdekkers |
| * |
| * 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.siyeh.ig.psiutils; |
| |
| import com.intellij.psi.*; |
| import org.jetbrains.annotations.NotNull; |
| |
| class VariableUsedInInnerClassVisitor extends JavaRecursiveElementVisitor { |
| |
| @NotNull private final PsiVariable variable; |
| private boolean usedInInnerClass = false; |
| private boolean inInnerClass = false; |
| |
| public VariableUsedInInnerClassVisitor(@NotNull PsiVariable variable) { |
| this.variable = variable; |
| } |
| |
| @Override |
| public void visitElement(@NotNull PsiElement element) { |
| if (!usedInInnerClass) { |
| super.visitElement(element); |
| } |
| } |
| |
| @Override |
| public void visitClass(@NotNull PsiClass aClass) { |
| if (usedInInnerClass) { |
| return; |
| } |
| final boolean wasInInnerClass = inInnerClass; |
| if (!inInnerClass) { |
| inInnerClass = true; |
| PsiElement child = aClass.getLBrace(); |
| while (child != null) { |
| child.accept(this); |
| child = child.getNextSibling(); |
| } |
| } else { |
| inInnerClass = true; |
| super.visitClass(aClass); |
| } |
| inInnerClass = wasInInnerClass; |
| } |
| |
| @Override |
| public void visitReferenceExpression(@NotNull PsiReferenceExpression referenceExpression) { |
| if (usedInInnerClass) { |
| return; |
| } |
| super.visitReferenceExpression(referenceExpression); |
| if (!inInnerClass) { |
| return; |
| } |
| final PsiElement target = referenceExpression.resolve(); |
| if (variable.equals(target)) { |
| usedInInnerClass = true; |
| } |
| } |
| |
| public boolean isUsedInInnerClass() { |
| return usedInInnerClass; |
| } |
| } |