| /* |
| * 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.initialization; |
| |
| import com.intellij.codeInsight.AnnotationUtil; |
| import com.intellij.codeInsight.daemon.ImplicitUsageProvider; |
| import com.intellij.openapi.extensions.Extensions; |
| import com.intellij.openapi.util.InvalidDataException; |
| import com.intellij.openapi.util.WriteExternalException; |
| import com.intellij.psi.*; |
| import com.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.BaseInspection; |
| import com.siyeh.ig.BaseInspectionVisitor; |
| import com.siyeh.ig.InspectionGadgetsFix; |
| import com.siyeh.ig.fixes.AddToIgnoreIfAnnotatedByListQuickFix; |
| import com.siyeh.ig.psiutils.ClassUtils; |
| import com.siyeh.ig.psiutils.UninitializedReadCollector; |
| import org.jdom.Element; |
| import org.jetbrains.annotations.NonNls; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| public class InstanceVariableUninitializedUseInspectionBase extends BaseInspection { |
| protected final List<String> annotationNames = new ArrayList(); |
| /** |
| * @noinspection PublicField |
| */ |
| public boolean m_ignorePrimitives = false; |
| /** |
| * @noinspection PublicField |
| */ |
| @NonNls |
| public String annotationNamesString = ""; |
| |
| public InstanceVariableUninitializedUseInspectionBase() { |
| parseString(annotationNamesString, annotationNames); |
| } |
| |
| @Override |
| @NotNull |
| public String getID() { |
| return "InstanceVariableUsedBeforeInitialized"; |
| } |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message("instance.variable.used.before.initialized.display.name"); |
| } |
| |
| @Override |
| @NotNull |
| public String buildErrorString(Object... infos) { |
| return InspectionGadgetsBundle.message("instance.variable.used.before.initialized.problem.descriptor"); |
| } |
| |
| @Override |
| public void readSettings(@NotNull Element element) throws InvalidDataException { |
| super.readSettings(element); |
| parseString(annotationNamesString, annotationNames); |
| } |
| |
| @Override |
| public void writeSettings(@NotNull Element element) throws WriteExternalException { |
| annotationNamesString = formatString(annotationNames); |
| super.writeSettings(element); |
| } |
| |
| @NotNull |
| @Override |
| protected InspectionGadgetsFix[] buildFixes(Object... infos) { |
| final PsiField field = (PsiField)infos[0]; |
| return AddToIgnoreIfAnnotatedByListQuickFix.build(field, annotationNames); |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new InstanceVariableInitializationVisitor(); |
| } |
| |
| private class InstanceVariableInitializationVisitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitField(@NotNull PsiField field) { |
| if (field.hasModifierProperty(PsiModifier.STATIC) || field.hasModifierProperty(PsiModifier.FINAL)) { |
| return; |
| } |
| if (field.getInitializer() != null) { |
| return; |
| } |
| final PsiAnnotation annotation = AnnotationUtil.findAnnotation(field, annotationNames); |
| if (annotation != null) { |
| return; |
| } |
| if (m_ignorePrimitives) { |
| final PsiType fieldType = field.getType(); |
| if (ClassUtils.isPrimitive(fieldType)) { |
| return; |
| } |
| } |
| final PsiClass aClass = field.getContainingClass(); |
| if (aClass == null) { |
| return; |
| } |
| for (ImplicitUsageProvider provider : |
| Extensions.getExtensions(ImplicitUsageProvider.EP_NAME)) { |
| if (provider.isImplicitWrite(field)) { |
| return; |
| } |
| } |
| final UninitializedReadCollector uninitializedReadsCollector = new UninitializedReadCollector(); |
| if (!isInitializedInInitializer(field, uninitializedReadsCollector)) { |
| final PsiMethod[] constructors = aClass.getConstructors(); |
| for (final PsiMethod constructor : constructors) { |
| final PsiCodeBlock body = constructor.getBody(); |
| uninitializedReadsCollector.blockAssignsVariable(body, field); |
| } |
| } |
| final PsiExpression[] badReads = uninitializedReadsCollector.getUninitializedReads(); |
| for (PsiExpression expression : badReads) { |
| registerError(expression, field); |
| } |
| } |
| |
| private boolean isInitializedInInitializer(@NotNull PsiField field, UninitializedReadCollector uninitializedReadsCollector) { |
| final PsiClass aClass = field.getContainingClass(); |
| if (aClass == null) { |
| return false; |
| } |
| final PsiClassInitializer[] initializers = aClass.getInitializers(); |
| for (final PsiClassInitializer initializer : initializers) { |
| if (!initializer.hasModifierProperty(PsiModifier.STATIC)) { |
| final PsiCodeBlock body = initializer.getBody(); |
| if (uninitializedReadsCollector.blockAssignsVariable(body, field)) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| } |
| } |