| /* |
| * Copyright 2000-2014 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 org.jetbrains.plugins.groovy.codeInspection.secondUnsafeCall; |
| |
| import com.intellij.codeInspection.ProblemsHolder; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiElementVisitor; |
| import org.jetbrains.annotations.Nls; |
| import org.jetbrains.annotations.NonNls; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| import org.jetbrains.plugins.groovy.annotator.inspections.SecondUnsafeCallQuickFix; |
| import org.jetbrains.plugins.groovy.codeInspection.GroovyInspectionBundle; |
| import org.jetbrains.plugins.groovy.codeInspection.GroovySuppressableInspectionTool; |
| import org.jetbrains.plugins.groovy.lang.lexer.GroovyTokenTypes; |
| import org.jetbrains.plugins.groovy.lang.psi.GroovyElementVisitor; |
| import org.jetbrains.plugins.groovy.lang.psi.GroovyPsiElementVisitor; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrReferenceExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.path.GrMethodCallExpression; |
| |
| /** |
| * User: Dmitry.Krasilschikov |
| * Date: 13.11.2007 |
| */ |
| public class SecondUnsafeCallInspection extends GroovySuppressableInspectionTool { |
| @Override |
| @NotNull |
| public PsiElementVisitor buildVisitor(@NotNull final ProblemsHolder holder, boolean isOnTheFly) { |
| return new GroovyPsiElementVisitor(new GroovyElementVisitor() { |
| @Override |
| public void visitReferenceExpression(GrReferenceExpression refExpression) { |
| checkForSecondUnsafeCall(refExpression, holder); |
| } |
| }); |
| } |
| |
| private static void checkForSecondUnsafeCall(GrExpression expression, ProblemsHolder holder) { |
| checkForSecondUnsafeCall(expression, holder, null); |
| } |
| |
| private static void checkForSecondUnsafeCall(GrExpression expression, ProblemsHolder holder, @Nullable PsiElement highlightElement) { |
| if (highlightElement == null) highlightElement = expression; |
| |
| final GrReferenceExpression referenceExpression = (GrReferenceExpression)expression; |
| |
| if (GroovyTokenTypes.mDOT.equals(referenceExpression.getDotTokenType())) { |
| // a?.b or a?.b() |
| final GrExpression qualifier = referenceExpression.getQualifierExpression(); |
| // a?.b() |
| if (qualifier instanceof GrMethodCallExpression) { |
| final GrExpression expression1 = ((GrMethodCallExpression)qualifier).getInvokedExpression(); |
| // a?.b |
| if (!(expression1 instanceof GrReferenceExpression)) return; |
| |
| if (GroovyTokenTypes.mOPTIONAL_DOT.equals(((GrReferenceExpression)expression1).getDotTokenType())) { |
| holder.registerProblem(highlightElement, GroovyInspectionBundle.message("call.can.throw.npe"), new SecondUnsafeCallQuickFix()); |
| } |
| } |
| else |
| // a?.b |
| if (qualifier instanceof GrReferenceExpression) { |
| if (GroovyTokenTypes.mOPTIONAL_DOT.equals(((GrReferenceExpression)qualifier).getDotTokenType())) { |
| holder.registerProblem(highlightElement, GroovyInspectionBundle.message("call.can.throw.npe"), new SecondUnsafeCallQuickFix()); |
| } |
| } |
| } |
| } |
| |
| @Override |
| @Nls |
| @NotNull |
| public String getGroupDisplayName() { |
| return "Probable bugs"; |
| } |
| |
| @NotNull |
| @Override |
| public String[] getGroupPath() { |
| return new String[]{"Groovy", getGroupDisplayName()}; |
| } |
| |
| @Override |
| @Nls |
| @NotNull |
| public String getDisplayName() { |
| return GroovyInspectionBundle.message("second.unsafe.call"); |
| } |
| |
| @Override |
| @NonNls |
| @NotNull |
| public String getShortName() { |
| return "SecondUnsafeCall"; |
| } |
| |
| @Override |
| public boolean isEnabledByDefault() { |
| return true; |
| } |
| } |