| /* |
| * 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.maturity; |
| |
| import com.intellij.psi.*; |
| import com.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.BaseInspection; |
| import com.siyeh.ig.BaseInspectionVisitor; |
| import com.siyeh.ig.psiutils.TypeUtils; |
| import org.jetbrains.annotations.Nls; |
| import org.jetbrains.annotations.NonNls; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * @author Bas Leijdekkers |
| */ |
| public class ThrowablePrintedToSystemOutInspection extends BaseInspection { |
| @Nls |
| @NotNull |
| @Override |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message("throwable.printed.to.system.out.display.name"); |
| } |
| |
| @NotNull |
| @Override |
| protected String buildErrorString(Object... infos) { |
| final String fieldName = (String)infos[0]; |
| final String methodName = (String)infos[1]; |
| return InspectionGadgetsBundle.message("throwable.printed.to.system.out.problem.descriptor", fieldName, methodName); |
| } |
| |
| @Override |
| public boolean isEnabledByDefault() { |
| return true; |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new ThrowablePrintedToSystemOutVisitor(); |
| } |
| |
| private static class ThrowablePrintedToSystemOutVisitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitMethodCallExpression(PsiMethodCallExpression expression) { |
| super.visitMethodCallExpression(expression); |
| final PsiReferenceExpression methodExpression = expression.getMethodExpression(); |
| @NonNls final String methodName = methodExpression.getReferenceName(); |
| if (!"print".equals(methodName) && !"println".equals(methodName)) { |
| return; |
| } |
| final PsiExpressionList argumentList = expression.getArgumentList(); |
| final PsiExpression[] arguments = argumentList.getExpressions(); |
| if (arguments.length != 1) { |
| return; |
| } |
| final PsiExpression argument = arguments[0]; |
| if (!(argument instanceof PsiReferenceExpression)) { |
| return; |
| } |
| final PsiReferenceExpression referenceExpression = (PsiReferenceExpression)argument; |
| if (!TypeUtils.expressionHasTypeOrSubtype(referenceExpression, CommonClassNames.JAVA_LANG_THROWABLE)) { |
| return; |
| } |
| final PsiMethod method = expression.resolveMethod(); |
| if (method == null) { |
| return; |
| } |
| final PsiExpression qualifier = methodExpression.getQualifierExpression(); |
| if (!(qualifier instanceof PsiReferenceExpression)) { |
| return; |
| } |
| final PsiReferenceExpression qualifierReference = (PsiReferenceExpression)qualifier; |
| final PsiElement target = qualifierReference.resolve(); |
| if (!(target instanceof PsiField)) { |
| return; |
| } |
| final PsiField field = (PsiField)target; |
| @NonNls final String fieldName = field.getName(); |
| if (!"out".equals(fieldName) && !"err".equals(fieldName)) { |
| return; |
| } |
| final PsiClass aClass = field.getContainingClass(); |
| if (aClass == null || !"java.lang.System".equals(aClass.getQualifiedName())) { |
| return; |
| } |
| registerError(argument, fieldName, methodName); |
| } |
| } |
| } |