| /* |
| * Copyright 2011 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.errorhandling; |
| |
| import com.intellij.codeInspection.ui.SingleCheckboxOptionsPanel; |
| import com.intellij.psi.*; |
| import com.intellij.psi.util.InheritanceUtil; |
| import com.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.BaseInspection; |
| import com.siyeh.ig.BaseInspectionVisitor; |
| import org.jetbrains.annotations.Nls; |
| import org.jetbrains.annotations.NotNull; |
| |
| import javax.swing.*; |
| |
| public class NewExceptionWithoutArgumentsInspection extends BaseInspection { |
| |
| @Deprecated |
| @SuppressWarnings({"PublicField", "UnusedDeclaration"}) |
| public boolean ignoreWithoutParameters = false; |
| |
| @Nls |
| @NotNull |
| @Override |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message("new.exception.without.arguments.display.name"); |
| } |
| |
| @NotNull |
| @Override |
| protected String buildErrorString(Object... infos) { |
| return InspectionGadgetsBundle.message("new.exception.without.arguments.problem.descriptor"); |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new NewExceptionWithoutArgumentsVisitor(); |
| } |
| |
| private class NewExceptionWithoutArgumentsVisitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitNewExpression(PsiNewExpression expression) { |
| super.visitNewExpression(expression); |
| final PsiExpressionList argumentList = expression.getArgumentList(); |
| if (argumentList == null) { |
| return; |
| } |
| final PsiExpression[] expressions = argumentList.getExpressions(); |
| if (expressions.length != 0) { |
| return; |
| } |
| final PsiJavaCodeReferenceElement classReference = expression.getClassReference(); |
| if (classReference == null) { |
| return; |
| } |
| final PsiElement target = classReference.resolve(); |
| if (!(target instanceof PsiClass)) { |
| return; |
| } |
| final PsiClass aClass = (PsiClass)target; |
| if (!InheritanceUtil.isInheritor(aClass, CommonClassNames.JAVA_LANG_EXCEPTION)) { |
| return; |
| } |
| if (hasAccessibleConstructorWithParameters(aClass, expression)) { |
| registerNewExpressionError(expression); |
| } |
| } |
| |
| private boolean hasAccessibleConstructorWithParameters(PsiClass aClass, PsiElement context) { |
| final PsiMethod[] constructors = aClass.getConstructors(); |
| for (PsiMethod constructor : constructors) { |
| final PsiParameterList parameterList = constructor.getParameterList(); |
| final int count = parameterList.getParametersCount(); |
| if (count <= 0) { |
| continue; |
| } |
| final PsiResolveHelper resolveHelper = JavaPsiFacade.getInstance(context.getProject()).getResolveHelper(); |
| if (resolveHelper.isAccessible(constructor, context, aClass)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| } |
| } |