| /* |
| * 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.abstraction; |
| |
| import com.intellij.codeInspection.ui.MultipleCheckboxOptionsPanel; |
| import com.intellij.psi.*; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.BaseInspection; |
| import com.siyeh.ig.BaseInspectionVisitor; |
| import com.siyeh.ig.psiutils.MethodUtils; |
| import org.jetbrains.annotations.NonNls; |
| import org.jetbrains.annotations.NotNull; |
| |
| import javax.swing.*; |
| |
| public class CastToConcreteClassInspection extends BaseInspection { |
| |
| @SuppressWarnings("PublicField") |
| public boolean ignoreAbstractClasses = false; |
| |
| @SuppressWarnings("PublicField") |
| public boolean ignoreInEquals = true; |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message("cast.to.concrete.class.display.name"); |
| } |
| |
| @Override |
| @NotNull |
| protected String buildErrorString(Object... infos) { |
| final PsiType type= (PsiType)infos[0]; |
| return InspectionGadgetsBundle.message("cast.to.concrete.class.problem.descriptor", type.getPresentableText()); |
| } |
| |
| @Override |
| public JComponent createOptionsPanel() { |
| final MultipleCheckboxOptionsPanel panel = new MultipleCheckboxOptionsPanel(this); |
| panel.addCheckbox(InspectionGadgetsBundle.message("cast.to.concrete.class.option"), "ignoreAbstractClasses"); |
| panel.addCheckbox(InspectionGadgetsBundle.message("cast.to.concrete.class.ignore.equals.option"), "ignoreInEquals"); |
| return panel; |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new CastToConcreteClassVisitor(); |
| } |
| |
| private class CastToConcreteClassVisitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitTypeCastExpression(@NotNull PsiTypeCastExpression expression) { |
| super.visitTypeCastExpression(expression); |
| final PsiTypeElement typeElement = expression.getCastType(); |
| if (typeElement == null) { |
| return; |
| } |
| if (!ConcreteClassUtil.typeIsConcreteClass(typeElement, ignoreAbstractClasses)) { |
| return; |
| } |
| if (ignoreInEquals) { |
| final PsiMethod method = PsiTreeUtil.getParentOfType(expression, PsiMethod.class, true, PsiClass.class); |
| if (MethodUtils.isEquals(method)) { |
| return; |
| } |
| } |
| registerError(typeElement, typeElement.getType()); |
| } |
| |
| @Override |
| public void visitMethodCallExpression(PsiMethodCallExpression expression) { |
| super.visitMethodCallExpression(expression); |
| final PsiReferenceExpression methodExpression = expression.getMethodExpression(); |
| @NonNls |
| final String referenceName = methodExpression.getReferenceName(); |
| if (!"cast".equals(referenceName)) { |
| return; |
| } |
| final PsiExpression qualifier = methodExpression.getQualifierExpression(); |
| if (qualifier == null) { |
| return; |
| } |
| final PsiType type = qualifier.getType(); |
| if (!(type instanceof PsiClassType)) { |
| return; |
| } |
| final PsiClassType classType = (PsiClassType)type; |
| final PsiClass aClass = classType.resolve(); |
| if (aClass == null) { |
| return; |
| } |
| final String className = aClass.getQualifiedName(); |
| if (!CommonClassNames.JAVA_LANG_CLASS.equals(className)) { |
| return; |
| } |
| final PsiType[] parameters = classType.getParameters(); |
| if (parameters.length != 1) { |
| return; |
| } |
| final PsiType parameter = parameters[0]; |
| if (!ConcreteClassUtil.typeIsConcreteClass(parameter, ignoreAbstractClasses)) { |
| return; |
| } |
| if (ignoreInEquals) { |
| final PsiMethod method = PsiTreeUtil.getParentOfType(expression, PsiMethod.class, true, PsiClass.class); |
| if (MethodUtils.isEquals(method)) { |
| return; |
| } |
| } |
| registerMethodCallError(expression, parameter); |
| } |
| } |
| } |