| /* |
| * 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.psi.util.PsiTreeUtil; |
| import com.intellij.psi.util.PsiUtil; |
| import com.siyeh.ig.BaseInspectionVisitor; |
| import com.siyeh.ig.psiutils.ClassUtils; |
| |
| class NonFinalStaticVariableUsedInClassInitializationVisitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitReferenceExpression(PsiReferenceExpression expression) { |
| super.visitReferenceExpression(expression); |
| if (!isInClassInitialization(expression)) { |
| return; |
| } |
| final PsiElement referent = expression.resolve(); |
| if (!(referent instanceof PsiField)) { |
| return; |
| } |
| final PsiField field = (PsiField)referent; |
| if (!field.hasModifierProperty(PsiModifier.STATIC)) { |
| return; |
| } |
| if (field.hasModifierProperty(PsiModifier.FINAL)) { |
| return; |
| } |
| registerError(expression, field); |
| } |
| |
| private static boolean isInClassInitialization( |
| PsiExpression expression) { |
| final PsiClass expressionClass = |
| ClassUtils.getContainingClass(expression); |
| final PsiMember member = |
| PsiTreeUtil.getParentOfType(expression, |
| PsiClassInitializer.class, PsiField.class); |
| if (member == null) { |
| return false; |
| } |
| final PsiClass memberClass = member.getContainingClass(); |
| if (!memberClass.equals(expressionClass)) { |
| return false; |
| } |
| if (!member.hasModifierProperty(PsiModifier.STATIC)) { |
| return false; |
| } |
| if (member instanceof PsiClassInitializer) { |
| return !PsiUtil.isOnAssignmentLeftHand(expression); |
| } |
| return true; |
| } |
| } |