| /* |
| * 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.ig.style; |
| |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiExpression; |
| import com.intellij.psi.PsiPolyadicExpression; |
| import com.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.BaseInspection; |
| import com.siyeh.ig.BaseInspectionVisitor; |
| import com.siyeh.ig.psiutils.ComparisonUtils; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class ChainedEqualityInspection extends BaseInspection { |
| |
| @Override |
| @NotNull |
| public String getID() { |
| return "ChainedEqualityComparisons"; |
| } |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message("chained.equality.comparisons.display.name"); |
| } |
| |
| @Override |
| @NotNull |
| public String buildErrorString(Object... infos) { |
| return InspectionGadgetsBundle.message("chained.equality.comparisons.problem.descriptor"); |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new ChainedEqualityVisitor(); |
| } |
| |
| private static class ChainedEqualityVisitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitPolyadicExpression(PsiPolyadicExpression expression) { |
| super.visitPolyadicExpression(expression); |
| if (!ComparisonUtils.isEqualityComparison(expression)) { |
| return; |
| } |
| final PsiElement parent = expression.getParent(); |
| if (parent instanceof PsiExpression) { |
| if (ComparisonUtils.isEqualityComparison((PsiExpression)parent)) { |
| return; |
| } |
| } |
| final PsiExpression[] operands = expression.getOperands(); |
| if (operands.length >= 3) { |
| registerError(expression); |
| } |
| else { |
| for (PsiExpression operand : operands) { |
| if (ComparisonUtils.isEqualityComparison(operand)) { |
| registerError(expression); |
| break; |
| } |
| } |
| } |
| } |
| } |
| } |