| /* |
| * Copyright 2003-2013 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.bugs; |
| |
| import com.intellij.psi.*; |
| import com.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.BaseInspection; |
| import com.siyeh.ig.BaseInspectionVisitor; |
| import com.siyeh.ig.psiutils.InheritanceUtil; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class CastToIncompatibleInterfaceInspection extends BaseInspection { |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message("casting.to.incompatible.interface.display.name"); |
| } |
| |
| @Override |
| @NotNull |
| public String buildErrorString(Object... infos) { |
| return InspectionGadgetsBundle.message("casting.to.incompatible.interface.problem.descriptor"); |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new CastToIncompatibleInterfaceVisitor(); |
| } |
| |
| private static class CastToIncompatibleInterfaceVisitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitTypeCastExpression(@NotNull PsiTypeCastExpression expression) { |
| super.visitTypeCastExpression(expression); |
| final PsiTypeElement castTypeElement = expression.getCastType(); |
| if (castTypeElement == null) { |
| return; |
| } |
| final PsiType castType = castTypeElement.getType(); |
| if (!(castType instanceof PsiClassType)) { |
| return; |
| } |
| final PsiClassType castClassType = (PsiClassType)castType; |
| final PsiExpression operand = expression.getOperand(); |
| if (operand == null) { |
| return; |
| } |
| final PsiType operandType = operand.getType(); |
| if (!(operandType instanceof PsiClassType)) { |
| return; |
| } |
| final PsiClassType operandClassType = (PsiClassType)operandType; |
| final PsiClass castClass = castClassType.resolve(); |
| if (castClass == null || !castClass.isInterface()) { |
| return; |
| } |
| final PsiClass operandClass = operandClassType.resolve(); |
| if (operandClass == null || operandClass.isInterface()) { |
| return; |
| } |
| if (InheritanceUtil.existsMutualSubclass(operandClass, castClass, isOnTheFly())) { |
| return; |
| } |
| registerError(castTypeElement); |
| } |
| } |
| } |