| /* |
| * Copyright 2006-2013 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.whileloop; |
| |
| import com.intellij.psi.*; |
| import com.siyeh.ig.PsiReplacementUtil; |
| import com.siyeh.ig.psiutils.BoolUtils; |
| import com.siyeh.ipp.base.Intention; |
| import com.siyeh.ipp.base.PsiElementPredicate; |
| import org.jetbrains.annotations.NonNls; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class ReplaceWhileLoopWithDoWhileLoopIntention extends Intention { |
| |
| @NotNull |
| protected PsiElementPredicate getElementPredicate() { |
| return new WhileLoopPredicate(); |
| } |
| |
| protected void processIntention(@NotNull PsiElement element) { |
| final PsiWhileStatement whileStatement = (PsiWhileStatement)element.getParent(); |
| if (whileStatement == null) { |
| return; |
| } |
| final PsiStatement body = whileStatement.getBody(); |
| final PsiExpression condition = whileStatement.getCondition(); |
| final boolean infiniteLoop = BoolUtils.isTrue(condition); |
| @NonNls final StringBuilder doWhileStatementText = new StringBuilder(); |
| if (!infiniteLoop) { |
| doWhileStatementText.append("if("); |
| if (condition != null) { |
| doWhileStatementText.append(condition.getText()); |
| } |
| doWhileStatementText.append(") {\n"); |
| } |
| if (body instanceof PsiBlockStatement) { |
| doWhileStatementText.append("do {"); |
| final PsiBlockStatement blockStatement = (PsiBlockStatement)body; |
| final PsiCodeBlock codeBlock = blockStatement.getCodeBlock(); |
| final PsiElement[] children = codeBlock.getChildren(); |
| if (children.length > 2) { |
| for (int i = 1; i < children.length - 1; i++) { |
| final PsiElement child = children[i]; |
| doWhileStatementText.append(child.getText()); |
| } |
| } |
| doWhileStatementText.append('}'); |
| } |
| else if (body != null) { |
| doWhileStatementText.append("do ").append(body.getText()).append('\n'); |
| } |
| doWhileStatementText.append("while("); |
| if (condition != null) { |
| doWhileStatementText.append(condition.getText()); |
| } |
| doWhileStatementText.append(");"); |
| if (!infiniteLoop) { |
| doWhileStatementText.append("\n}"); |
| } |
| PsiReplacementUtil.replaceStatement(whileStatement, doWhileStatementText.toString()); |
| } |
| } |