| /* |
| * Copyright 2003-2007 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.ipp.increment; |
| |
| import com.intellij.psi.*; |
| import com.intellij.psi.tree.IElementType; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.siyeh.ipp.base.PsiElementPredicate; |
| |
| class ExtractIncrementPredicate implements PsiElementPredicate { |
| |
| public boolean satisfiedBy(PsiElement element) { |
| if (!(element instanceof PsiPrefixExpression) && |
| !(element instanceof PsiPostfixExpression)) { |
| return false; |
| } |
| final IElementType tokenType; |
| if (element instanceof PsiPostfixExpression) { |
| final PsiPostfixExpression postfixExpression = |
| (PsiPostfixExpression)element; |
| final PsiExpression operand = postfixExpression.getOperand(); |
| if (!(operand instanceof PsiReferenceExpression)) { |
| return false; |
| } |
| tokenType = postfixExpression.getOperationTokenType(); |
| } |
| else { |
| final PsiPrefixExpression prefixExpression = |
| (PsiPrefixExpression)element; |
| final PsiExpression operand = prefixExpression.getOperand(); |
| if (!(operand instanceof PsiReferenceExpression)) { |
| return false; |
| } |
| tokenType = prefixExpression.getOperationTokenType(); |
| } |
| if (!JavaTokenType.PLUSPLUS.equals(tokenType) && |
| !JavaTokenType.MINUSMINUS.equals(tokenType)) { |
| return false; |
| } |
| final PsiElement parent = element.getParent(); |
| if (parent instanceof PsiExpressionStatement) { |
| return false; |
| } |
| final PsiStatement containingStatement = |
| PsiTreeUtil.getParentOfType(element, PsiStatement.class); |
| return containingStatement != null; |
| } |
| } |