| /* |
| * Copyright 2003-2010 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.codeInspection.ProblemDescriptor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.*; |
| import com.intellij.psi.tree.IElementType; |
| 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.psiutils.TypeUtils; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class TypeParameterExtendsObjectInspection extends BaseInspection { |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message( |
| "type.parameter.extends.object.display.name"); |
| } |
| |
| @Override |
| @NotNull |
| public String getID() { |
| return "TypeParameterExplicitlyExtendsObject"; |
| } |
| |
| @Override |
| @NotNull |
| protected String buildErrorString(Object... infos) { |
| final Integer type = (Integer)infos[0]; |
| if (type.intValue() == 1) { |
| return InspectionGadgetsBundle.message( |
| "type.parameter.extends.object.problem.descriptor1"); |
| } |
| else { |
| return InspectionGadgetsBundle.message( |
| "type.parameter.extends.object.problem.descriptor2"); |
| } |
| } |
| |
| @Override |
| public boolean isEnabledByDefault() { |
| return true; |
| } |
| |
| @Override |
| protected InspectionGadgetsFix buildFix(Object... infos) { |
| return new ExtendsObjectFix(); |
| } |
| |
| private static class ExtendsObjectFix extends InspectionGadgetsFix { |
| |
| @Override |
| @NotNull |
| public String getName() { |
| return InspectionGadgetsBundle.message( |
| "extends.object.remove.quickfix"); |
| } |
| |
| @NotNull |
| @Override |
| public String getFamilyName() { |
| return getName(); |
| } |
| |
| @Override |
| public void doFix(@NotNull Project project, |
| ProblemDescriptor descriptor) |
| throws IncorrectOperationException { |
| final PsiElement identifier = descriptor.getPsiElement(); |
| final PsiElement parent = identifier.getParent(); |
| if (parent instanceof PsiTypeParameter) { |
| final PsiTypeParameter typeParameter = |
| (PsiTypeParameter)parent; |
| final PsiReferenceList extendsList = |
| typeParameter.getExtendsList(); |
| final PsiJavaCodeReferenceElement[] referenceElements = |
| extendsList.getReferenceElements(); |
| for (PsiJavaCodeReferenceElement referenceElement : |
| referenceElements) { |
| deleteElement(referenceElement); |
| } |
| } |
| else { |
| final PsiTypeElement typeElement = (PsiTypeElement)parent; |
| PsiElement child = typeElement.getLastChild(); |
| while (child != null) { |
| if (child instanceof PsiJavaToken) { |
| final PsiJavaToken javaToken = (PsiJavaToken)child; |
| final IElementType tokenType = javaToken.getTokenType(); |
| if (tokenType == JavaTokenType.QUEST) { |
| return; |
| } |
| } |
| child.delete(); |
| child = typeElement.getLastChild(); |
| } |
| } |
| } |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new ExtendsObjectVisitor(); |
| } |
| |
| private static class ExtendsObjectVisitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitTypeParameter(PsiTypeParameter parameter) { |
| super.visitTypeParameter(parameter); |
| final PsiClassType[] extendsListTypes = |
| parameter.getExtendsListTypes(); |
| if (extendsListTypes.length != 1) { |
| return; |
| } |
| final PsiClassType extendsType = extendsListTypes[0]; |
| if (!extendsType.equalsToText(CommonClassNames.JAVA_LANG_OBJECT)) { |
| return; |
| } |
| final PsiIdentifier nameIdentifier = parameter.getNameIdentifier(); |
| if (nameIdentifier == null) { |
| return; |
| } |
| registerError(nameIdentifier, Integer.valueOf(1)); |
| } |
| |
| |
| @Override |
| public void visitTypeElement(PsiTypeElement typeElement) { |
| super.visitTypeElement(typeElement); |
| final PsiElement lastChild = typeElement.getLastChild(); |
| if (!(lastChild instanceof PsiTypeElement)) { |
| return; |
| } |
| final PsiType type = typeElement.getType(); |
| if (!(type instanceof PsiWildcardType)) { |
| return; |
| } |
| final PsiWildcardType wildcardType = (PsiWildcardType)type; |
| if (!wildcardType.isExtends()) { |
| return; |
| } |
| final PsiType extendsBound = wildcardType.getBound(); |
| if (!TypeUtils.isJavaLangObject(extendsBound)) { |
| return; |
| } |
| final PsiElement firstChild = typeElement.getFirstChild(); |
| if (firstChild == null) { |
| return; |
| } |
| registerError(firstChild, Integer.valueOf(2)); |
| } |
| } |
| } |