| /* |
| * Copyright 2003-2014 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.psiutils; |
| |
| import com.intellij.psi.*; |
| import com.intellij.psi.util.InheritanceUtil; |
| import com.intellij.psi.util.PsiUtil; |
| import com.siyeh.HardcodedMethodConstants; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| public class CloneUtils { |
| |
| private CloneUtils() {} |
| |
| public static boolean isCloneable(@Nullable PsiClass aClass) { |
| return InheritanceUtil.isInheritor(aClass, CommonClassNames.JAVA_LANG_CLONEABLE); |
| } |
| |
| public static boolean isDirectlyCloneable(@NotNull PsiClass aClass) { |
| final PsiClass[] interfaces = aClass.getInterfaces(); |
| for (PsiClass anInterface : interfaces) { |
| if (anInterface == null) { |
| continue; |
| } |
| final String qualifiedName = anInterface.getQualifiedName(); |
| if (CommonClassNames.JAVA_LANG_CLONEABLE.equals(qualifiedName)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| public static boolean isClone(@Nullable PsiMethod method) { |
| if (method == null) { |
| return false; |
| } |
| final PsiClassType javaLangObject; |
| if (!PsiUtil.isLanguageLevel5OrHigher(method)) { |
| javaLangObject = TypeUtils.getObjectType(method); |
| } |
| else { |
| // for 1.5 and after, clone may be covariant |
| javaLangObject = null; |
| } |
| return MethodUtils.methodMatches(method, null, javaLangObject, |
| HardcodedMethodConstants.CLONE, PsiType.EMPTY_ARRAY); |
| } |
| |
| public static boolean onlyThrowsCloneNotSupportedException( |
| @NotNull PsiMethod method) { |
| final PsiCodeBlock body = method.getBody(); |
| if (body == null) { |
| return false; |
| } |
| final PsiStatement[] statements = body.getStatements(); |
| if (statements.length != 1) { |
| return false; |
| } |
| final PsiStatement statement = statements[0]; |
| if (!(statement instanceof PsiThrowStatement)) { |
| return false; |
| } |
| final PsiThrowStatement throwStatement = |
| (PsiThrowStatement)statement; |
| final PsiExpression exception = throwStatement.getException(); |
| if (!(exception instanceof PsiNewExpression)) { |
| return false; |
| } |
| final PsiNewExpression newExpression = (PsiNewExpression)exception; |
| final PsiJavaCodeReferenceElement classReference = |
| newExpression.getClassReference(); |
| if (classReference == null) { |
| return false; |
| } |
| final String qualifiedName = classReference.getQualifiedName(); |
| return qualifiedName.equals("java.lang.CloneNotSupportedException"); |
| } |
| } |