| /* |
| * 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 ReplaceDoWhileLoopWithWhileLoopIntention extends Intention { |
| |
| @NotNull |
| protected PsiElementPredicate getElementPredicate() { |
| return new DoWhileLoopPredicate(); |
| } |
| |
| protected void processIntention(@NotNull PsiElement element) { |
| final PsiDoWhileStatement doWhileStatement = (PsiDoWhileStatement)element.getParent(); |
| if (doWhileStatement == null) { |
| return; |
| } |
| final PsiStatement body = doWhileStatement.getBody(); |
| final PsiElement parent = doWhileStatement.getParent(); |
| final PsiExpression condition = doWhileStatement.getCondition(); |
| @NonNls final StringBuilder replacementText = new StringBuilder(); |
| if (BoolUtils.isTrue(condition)) { |
| // no trickery needed |
| replacementText.append("while(").append(condition.getText()).append(')'); |
| if (body != null) { |
| replacementText.append(body.getText()); |
| } |
| PsiReplacementUtil.replaceStatement(doWhileStatement, replacementText.toString()); |
| return; |
| } |
| final boolean noBraces = !(parent instanceof PsiCodeBlock); |
| if (noBraces) { |
| final PsiElement[] parentChildren = parent.getChildren(); |
| for (PsiElement child : parentChildren) { |
| if (child == doWhileStatement) { |
| break; |
| } |
| replacementText.append(child.getText()); |
| } |
| replacementText.append('{'); |
| } |
| if (body instanceof PsiBlockStatement) { |
| final PsiBlockStatement blockStatement = (PsiBlockStatement)body; |
| final PsiCodeBlock codeBlock = blockStatement.getCodeBlock(); |
| final PsiElement[] children = codeBlock.getChildren(); |
| if (children.length > 2) { |
| for (int i = 1, length = children.length - 1; i < length; i++) { |
| final PsiElement child = children[i]; |
| if (child instanceof PsiDeclarationStatement) { |
| final PsiDeclarationStatement declarationStatement = (PsiDeclarationStatement)child; |
| final PsiElement[] declaredElements = declarationStatement.getDeclaredElements(); |
| for (PsiElement declaredElement : declaredElements) { |
| if (declaredElement instanceof PsiVariable) { |
| final PsiVariable variable = (PsiVariable)declaredElement; |
| final PsiModifierList modifierList = variable.getModifierList(); |
| if (modifierList != null) { |
| modifierList.setModifierProperty(PsiModifier.FINAL, false); |
| } |
| } |
| } |
| } |
| if (noBraces) { |
| replacementText.append(child.getText()); |
| } |
| else { |
| parent.addBefore(child, doWhileStatement); |
| } |
| } |
| } |
| } |
| else if (body != null) { |
| if (noBraces) { |
| replacementText.append(body.getText()); |
| } |
| else { |
| parent.addBefore(body, doWhileStatement); |
| } |
| } |
| replacementText.append("while("); |
| if (condition != null) { |
| replacementText.append(condition.getText()); |
| } |
| replacementText.append(')'); |
| if (body instanceof PsiBlockStatement) { |
| replacementText.append('{'); |
| 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]; |
| if (child instanceof PsiDeclarationStatement) { |
| final PsiDeclarationStatement declarationStatement = (PsiDeclarationStatement)child; |
| final PsiElement[] declaredElements = declarationStatement.getDeclaredElements(); |
| for (PsiElement declaredElement : declaredElements) { |
| if (declaredElement instanceof PsiVariable) { |
| // prevent duplicate variable declarations. |
| final PsiVariable variable = (PsiVariable)declaredElement; |
| final PsiExpression initializer = variable.getInitializer(); |
| if (initializer != null) { |
| replacementText.append(variable.getName()).append(" = ").append(initializer.getText()).append(';'); |
| } |
| } |
| } |
| } |
| else { |
| replacementText.append(child.getText()); |
| } |
| } |
| } |
| replacementText.append('}'); |
| } |
| else if (body != null) { |
| replacementText.append(body.getText()); |
| } |
| if (noBraces) { |
| replacementText.append('}'); |
| } |
| if (noBraces) { |
| PsiReplacementUtil.replaceStatement((PsiStatement)parent, replacementText.toString()); |
| } |
| else { |
| PsiReplacementUtil.replaceStatement(doWhileStatement, replacementText.toString()); |
| } |
| } |
| } |