| /* |
| * Copyright 2003-2013 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.imports; |
| |
| 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.DeleteImportFix; |
| import com.intellij.psi.util.FileTypeUtils; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| public class UnusedImportInspection extends BaseInspection { |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message("unused.import.display.name"); |
| } |
| |
| @Override |
| @NotNull |
| public String buildErrorString(Object... infos) { |
| return InspectionGadgetsBundle.message("unused.import.problem.descriptor"); |
| } |
| |
| @Override |
| public boolean runForWholeFile() { |
| return true; |
| } |
| |
| @Override |
| public InspectionGadgetsFix buildFix(Object... infos) { |
| return new DeleteImportFix(); |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new UnusedImportVisitor(); |
| } |
| |
| private static class UnusedImportVisitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitJavaFile(PsiJavaFile file) { |
| if (FileTypeUtils.isInServerPageFile(file)) { |
| return; |
| } |
| final PsiClass[] classes = file.getClasses(); |
| final PsiPackageStatement packageStatement = file.getPackageStatement(); |
| final PsiModifierList annotationList; |
| if (packageStatement != null) { |
| annotationList = packageStatement.getAnnotationList(); |
| } |
| else { |
| annotationList = null; |
| } |
| checkImports(file, classes, annotationList); |
| } |
| |
| private void checkImports(PsiJavaFile file, PsiClass[] classes, @Nullable PsiModifierList annotationList) { |
| final ImportsAreUsedVisitor visitor = new ImportsAreUsedVisitor(file); |
| for (PsiClass aClass : classes) { |
| aClass.accept(visitor); |
| } |
| if (annotationList != null) { |
| annotationList.accept(visitor); |
| } |
| final PsiImportStatementBase[] unusedImportStatements = visitor.getUnusedImportStatements(); |
| for (PsiImportStatementBase unusedImportStatement : unusedImportStatements) { |
| registerError(unusedImportStatement); |
| } |
| } |
| } |
| } |