| /* |
| * 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.assignment; |
| |
| import com.intellij.psi.*; |
| import com.intellij.psi.util.InheritanceUtil; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.BaseInspection; |
| import com.siyeh.ig.BaseInspectionVisitor; |
| import org.jetbrains.annotations.Nls; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * @author Bas Leijdekkers |
| */ |
| public class AssignmentToSuperclassFieldInspection extends BaseInspection { |
| |
| @Nls |
| @NotNull |
| @Override |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message("assignment.to.superclass.field.display.name"); |
| } |
| |
| @NotNull |
| @Override |
| protected String buildErrorString(Object... infos) { |
| final PsiReferenceExpression referenceExpression = (PsiReferenceExpression)infos[0]; |
| final PsiClass superclass = (PsiClass)infos[1]; |
| return InspectionGadgetsBundle.message("assignment.to.superclass.field.problem.descriptor", |
| referenceExpression.getReferenceName(), superclass.getName()); |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new AssignmentToSuperclassFieldVisitor(); |
| } |
| |
| private static class AssignmentToSuperclassFieldVisitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitAssignmentExpression(PsiAssignmentExpression expression) { |
| super.visitAssignmentExpression(expression); |
| final PsiExpression lhs = expression.getLExpression(); |
| checkSuperclassField(lhs); |
| } |
| |
| @Override |
| public void visitPrefixExpression(PsiPrefixExpression expression) { |
| super.visitPrefixExpression(expression); |
| final PsiExpression operand = expression.getOperand(); |
| checkSuperclassField(operand); |
| } |
| |
| @Override |
| public void visitPostfixExpression(PsiPostfixExpression expression) { |
| super.visitPostfixExpression(expression); |
| final PsiExpression operand = expression.getOperand(); |
| checkSuperclassField(operand); |
| } |
| |
| private void checkSuperclassField(PsiExpression expression) { |
| if (!(expression instanceof PsiReferenceExpression)) { |
| return; |
| } |
| final PsiMethod method = PsiTreeUtil.getParentOfType(expression, PsiMethod.class, true, PsiClass.class); |
| if (method == null || !method.isConstructor()) { |
| return; |
| } |
| final PsiReferenceExpression referenceExpression = (PsiReferenceExpression)expression; |
| final PsiExpression qualifierExpression = referenceExpression.getQualifierExpression(); |
| if (qualifierExpression != null && |
| !(qualifierExpression instanceof PsiThisExpression) && !(qualifierExpression instanceof PsiSuperExpression)) { |
| return; |
| } |
| final PsiElement target = referenceExpression.resolve(); |
| if (!(target instanceof PsiField)) { |
| return; |
| } |
| final PsiField field = (PsiField)target; |
| final PsiClass fieldClass = field.getContainingClass(); |
| if (fieldClass == null) { |
| return; |
| } |
| final PsiClass assignmentClass = method.getContainingClass(); |
| final String name = fieldClass.getQualifiedName(); |
| if (name == null || !InheritanceUtil.isInheritor(assignmentClass, true, name)) { |
| return; |
| } |
| registerError(expression, referenceExpression, fieldClass); |
| } |
| } |
| } |