| /* |
| * Copyright 2000-2013 JetBrains s.r.o. |
| * |
| * 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.controlflow; |
| |
| import com.intellij.codeInspection.ProblemDescriptor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.*; |
| import com.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.BaseInspection; |
| import com.siyeh.ig.BaseInspectionVisitor; |
| import com.siyeh.ig.InspectionGadgetsFix; |
| import com.siyeh.ig.PsiReplacementUtil; |
| import com.siyeh.ig.psiutils.BoolUtils; |
| import com.siyeh.ig.psiutils.ParenthesesUtils; |
| import org.jetbrains.annotations.Nls; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * @author Bas Leijdekkers |
| */ |
| public class NegatedConditionalExpressionInspection extends BaseInspection { |
| |
| @Nls |
| @NotNull |
| @Override |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message("negated.conditional.expression.display.name"); |
| } |
| |
| @NotNull |
| @Override |
| protected String buildErrorString(Object... infos) { |
| return InspectionGadgetsBundle.message("negated.conditional.expression.problem.descriptor"); |
| } |
| |
| @Nullable |
| @Override |
| protected InspectionGadgetsFix buildFix(Object... infos) { |
| return new NegatedConditionalExpressionFix(); |
| } |
| |
| private static class NegatedConditionalExpressionFix extends InspectionGadgetsFix { |
| |
| @NotNull |
| @Override |
| public String getName() { |
| return InspectionGadgetsBundle.message("negated.conditional.expression.quickfix"); |
| } |
| |
| @NotNull |
| @Override |
| public String getFamilyName() { |
| return getName(); |
| } |
| |
| @Override |
| protected void doFix(Project project, ProblemDescriptor descriptor) { |
| final PsiElement element = descriptor.getPsiElement().getParent(); |
| if (!(element instanceof PsiPrefixExpression)) { |
| return; |
| } |
| final PsiPrefixExpression prefixExpression = (PsiPrefixExpression)element; |
| final PsiExpression operand = ParenthesesUtils.stripParentheses(prefixExpression.getOperand()); |
| if (!(operand instanceof PsiConditionalExpression)) { |
| return; |
| } |
| final PsiConditionalExpression conditionalExpression = (PsiConditionalExpression)operand; |
| final StringBuilder newExpression = new StringBuilder(); |
| final PsiExpression condition = conditionalExpression.getCondition(); |
| newExpression.append(condition.getText()).append('?'); |
| final PsiExpression thenExpression = conditionalExpression.getThenExpression(); |
| if (thenExpression != null) { |
| newExpression.append(BoolUtils.getNegatedExpressionText(thenExpression)); |
| } |
| newExpression.append(':'); |
| final PsiExpression elseExpression = conditionalExpression.getElseExpression(); |
| if (elseExpression != null) { |
| newExpression.append(BoolUtils.getNegatedExpressionText(elseExpression)); |
| } |
| PsiReplacementUtil.replaceExpression(prefixExpression, newExpression.toString()); |
| } |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new NegatedConditionalExpressionVisitor(); |
| } |
| |
| private static class NegatedConditionalExpressionVisitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitPrefixExpression(PsiPrefixExpression expression) { |
| super.visitPrefixExpression(expression); |
| if (!JavaTokenType.EXCL.equals(expression.getOperationTokenType())) { |
| return; |
| } |
| final PsiExpression operand = ParenthesesUtils.stripParentheses(expression.getOperand()); |
| if (!(operand instanceof PsiConditionalExpression)) { |
| return; |
| } |
| registerError(expression.getOperationSign()); |
| } |
| } |
| } |