| /* |
| * Copyright 2003-2008 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.initialization; |
| |
| import com.intellij.psi.*; |
| import com.intellij.codeInspection.ui.SingleCheckboxOptionsPanel; |
| import com.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.BaseInspection; |
| import com.siyeh.ig.BaseInspectionVisitor; |
| import com.siyeh.ig.psiutils.ClassUtils; |
| import com.siyeh.ig.psiutils.UninitializedReadCollector; |
| import org.jetbrains.annotations.NotNull; |
| |
| import javax.swing.*; |
| |
| public class StaticVariableUninitializedUseInspection extends BaseInspection { |
| |
| /** |
| * @noinspection PublicField |
| */ |
| public boolean m_ignorePrimitives = false; |
| |
| @Override |
| @NotNull |
| public String getID() { |
| return "StaticVariableUsedBeforeInitialization"; |
| } |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message( |
| "static.variable.used.before.initialization.display.name"); |
| } |
| |
| @Override |
| @NotNull |
| public String buildErrorString(Object... infos) { |
| return InspectionGadgetsBundle.message( |
| "static.variable.used.before.initialization.problem.descriptor"); |
| } |
| |
| @Override |
| public JComponent createOptionsPanel() { |
| return new SingleCheckboxOptionsPanel( |
| InspectionGadgetsBundle.message( |
| "primitive.fields.ignore.option"), |
| this, "m_ignorePrimitives"); |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new StaticVariableInitializationVisitor(); |
| } |
| |
| private class StaticVariableInitializationVisitor |
| extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitField(@NotNull PsiField field) { |
| if (!field.hasModifierProperty(PsiModifier.STATIC)) { |
| return; |
| } |
| if (field.getInitializer() != null) { |
| return; |
| } |
| final PsiClass containingClass = field.getContainingClass(); |
| if (containingClass == null) { |
| return; |
| } |
| if (containingClass.isEnum()) { |
| return; |
| } |
| if (m_ignorePrimitives) { |
| final PsiType type = field.getType(); |
| if (ClassUtils.isPrimitive(type)) { |
| return; |
| } |
| } |
| final PsiClassInitializer[] initializers = |
| containingClass.getInitializers(); |
| // Do the static initializers come in actual order in file? |
| // (They need to.) |
| final UninitializedReadCollector uninitializedReadCollector = |
| new UninitializedReadCollector(); |
| boolean assigned = false; |
| for (final PsiClassInitializer initializer : initializers) { |
| if (!initializer.hasModifierProperty(PsiModifier.STATIC)) { |
| continue; |
| } |
| final PsiCodeBlock body = initializer.getBody(); |
| if (uninitializedReadCollector.blockAssignsVariable( |
| body, field)) { |
| assigned = true; |
| break; |
| } |
| } |
| if (assigned) { |
| final PsiExpression[] badReads = |
| uninitializedReadCollector.getUninitializedReads(); |
| for (PsiExpression badRead : badReads) { |
| registerError(badRead); |
| } |
| return; |
| } |
| final PsiMethod[] methods = containingClass.getMethods(); |
| for (PsiMethod method : methods) { |
| if (!method.hasModifierProperty(PsiModifier.STATIC)) { |
| continue; |
| } |
| final PsiCodeBlock body = method.getBody(); |
| uninitializedReadCollector.blockAssignsVariable(body, field); |
| } |
| final PsiExpression[] moreBadReads = |
| uninitializedReadCollector.getUninitializedReads(); |
| for (PsiExpression badRead : moreBadReads) { |
| registerError(badRead); |
| } |
| } |
| } |
| } |