| /* |
| * Copyright 2003-2008 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.ig.controlflow; |
| |
| import com.intellij.codeInspection.ProblemDescriptor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.PsiConditionalExpression; |
| import com.intellij.psi.PsiExpression; |
| import com.intellij.util.IncorrectOperationException; |
| 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 org.jetbrains.annotations.NotNull; |
| |
| public class ConstantConditionalExpressionInspection |
| extends BaseInspection { |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message( |
| "constant.conditional.expression.display.name"); |
| } |
| |
| @Override |
| public boolean isEnabledByDefault() { |
| return true; |
| } |
| |
| @Override |
| @NotNull |
| public String buildErrorString(Object... infos) { |
| final PsiConditionalExpression expression = |
| (PsiConditionalExpression)infos[0]; |
| return InspectionGadgetsBundle.message( |
| "constant.conditional.expression.problem.descriptor", |
| calculateReplacementExpression(expression)); |
| } |
| |
| static String calculateReplacementExpression( |
| PsiConditionalExpression exp) { |
| final PsiExpression thenExpression = exp.getThenExpression(); |
| final PsiExpression elseExpression = exp.getElseExpression(); |
| final PsiExpression condition = exp.getCondition(); |
| assert thenExpression != null; |
| assert elseExpression != null; |
| if (BoolUtils.isTrue(condition)) { |
| return thenExpression.getText(); |
| } |
| else { |
| return elseExpression.getText(); |
| } |
| } |
| |
| @Override |
| public InspectionGadgetsFix buildFix(Object... infos) { |
| return new ConstantConditionalFix(); |
| } |
| |
| private static class ConstantConditionalFix extends InspectionGadgetsFix { |
| |
| @Override |
| @NotNull |
| public String getName() { |
| return InspectionGadgetsBundle.message( |
| "constant.conditional.expression.simplify.quickfix"); |
| } |
| |
| @NotNull |
| @Override |
| public String getFamilyName() { |
| return getName(); |
| } |
| |
| @Override |
| public void doFix(Project project, ProblemDescriptor descriptor) |
| throws IncorrectOperationException { |
| final PsiConditionalExpression expression = |
| (PsiConditionalExpression)descriptor.getPsiElement(); |
| final String newExpression = |
| calculateReplacementExpression(expression); |
| PsiReplacementUtil.replaceExpression(expression, newExpression); |
| } |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new ConstantConditionalExpressionVisitor(); |
| } |
| |
| private static class ConstantConditionalExpressionVisitor |
| extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitConditionalExpression( |
| PsiConditionalExpression expression) { |
| super.visitConditionalExpression(expression); |
| final PsiExpression condition = expression.getCondition(); |
| final PsiExpression thenExpression = expression.getThenExpression(); |
| if (thenExpression == null) { |
| return; |
| } |
| final PsiExpression elseExpression = expression.getElseExpression(); |
| if (elseExpression == null) { |
| return; |
| } |
| if (BoolUtils.isFalse(condition) || BoolUtils.isTrue(condition)) { |
| registerError(expression, expression); |
| } |
| } |
| } |
| } |