| /* |
| * Copyright 2003-2012 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.trivialif; |
| |
| import com.intellij.psi.*; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.util.IncorrectOperationException; |
| import com.siyeh.ig.PsiReplacementUtil; |
| import com.siyeh.ipp.base.Intention; |
| import com.siyeh.ipp.base.PsiElementPredicate; |
| import com.siyeh.ipp.psiutils.ErrorUtil; |
| import org.jetbrains.annotations.NonNls; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class ExpandBooleanIntention extends Intention { |
| |
| @Override |
| @NotNull |
| public PsiElementPredicate getElementPredicate() { |
| return new ExpandBooleanPredicate(); |
| } |
| |
| @Override |
| public void processIntention(@NotNull PsiElement element) throws IncorrectOperationException { |
| final PsiStatement containingStatement = PsiTreeUtil.getParentOfType(element, PsiStatement.class); |
| if (containingStatement == null) { |
| return; |
| } |
| if (ExpandBooleanPredicate.isBooleanAssignment(containingStatement)) { |
| final PsiExpressionStatement assignmentStatement = (PsiExpressionStatement)containingStatement; |
| final PsiAssignmentExpression assignmentExpression = (PsiAssignmentExpression)assignmentStatement.getExpression(); |
| final PsiExpression rhs = assignmentExpression.getRExpression(); |
| if (rhs == null) { |
| return; |
| } |
| final PsiExpression lhs = assignmentExpression.getLExpression(); |
| if (ErrorUtil.containsDeepError(lhs) || ErrorUtil.containsDeepError(rhs)) { |
| return; |
| } |
| final String rhsText = rhs.getText(); |
| final String lhsText = lhs.getText(); |
| final PsiJavaToken sign = assignmentExpression.getOperationSign(); |
| final String signText = sign.getText(); |
| final String conditionText; |
| if (signText.length() == 2) { |
| conditionText = lhsText + signText.charAt(0) + rhsText; |
| } |
| else { |
| conditionText = rhsText; |
| } |
| @NonNls final String statement = "if(" + conditionText + ") " + lhsText + " = true; else " + lhsText + " = false;"; |
| PsiReplacementUtil.replaceStatement(containingStatement, statement); |
| } |
| else if (ExpandBooleanPredicate.isBooleanReturn(containingStatement)) { |
| final PsiReturnStatement returnStatement = (PsiReturnStatement)containingStatement; |
| final PsiExpression returnValue = returnStatement.getReturnValue(); |
| if (returnValue == null) { |
| return; |
| } |
| if (ErrorUtil.containsDeepError(returnValue)) { |
| return; |
| } |
| final String valueText = returnValue.getText(); |
| @NonNls final String statement = "if(" + valueText + ") return true; else return false;"; |
| PsiReplacementUtil.replaceStatement(containingStatement, statement); |
| } |
| else if (ExpandBooleanPredicate.isBooleanDeclaration(containingStatement)) { |
| final PsiDeclarationStatement declarationStatement = (PsiDeclarationStatement)containingStatement; |
| final PsiElement declaredElement = declarationStatement.getDeclaredElements()[0]; |
| if (!(declaredElement instanceof PsiLocalVariable)) { |
| return; |
| } |
| final PsiLocalVariable variable = (PsiLocalVariable)declaredElement; |
| final PsiExpression initializer = variable.getInitializer(); |
| if (initializer == null) { |
| return; |
| } |
| final String name = variable.getName(); |
| @NonNls final String newStatementText = "if(" + initializer.getText() + ") " + name +"=true; else " + name + "=false;"; |
| final PsiElementFactory factory = JavaPsiFacade.getElementFactory(containingStatement.getProject()); |
| final PsiStatement newStatement = factory.createStatementFromText(newStatementText, containingStatement); |
| declarationStatement.getParent().addAfter(newStatement, declarationStatement); |
| initializer.delete(); |
| } |
| } |
| } |