| /* |
| * Copyright 2003-2007 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.PsiClass; |
| import com.intellij.psi.PsiImportList; |
| import com.intellij.psi.PsiImportStatement; |
| import com.intellij.psi.PsiJavaFile; |
| import com.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.BaseInspection; |
| import com.siyeh.ig.BaseInspectionVisitor; |
| import com.intellij.psi.util.FileTypeUtils; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class SingleClassImportInspection extends BaseInspection { |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message( |
| "single.class.import.display.name"); |
| } |
| |
| @Override |
| @NotNull |
| public String buildErrorString(Object... infos) { |
| return InspectionGadgetsBundle.message( |
| "single.class.import.problem.descriptor"); |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new PackageImportVisitor(); |
| } |
| |
| private static class PackageImportVisitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitClass(@NotNull PsiClass aClass) { |
| // no call to super, so it doesn't drill down |
| if (!(aClass.getParent() instanceof PsiJavaFile)) { |
| return; |
| } |
| if (FileTypeUtils.isInServerPageFile(aClass.getContainingFile())) { |
| return; |
| } |
| final PsiJavaFile file = (PsiJavaFile)aClass.getParent(); |
| if (file == null) { |
| return; |
| } |
| if (!file.getClasses()[0].equals(aClass)) { |
| return; |
| } |
| final PsiImportList importList = file.getImportList(); |
| if (importList == null) { |
| return; |
| } |
| final PsiImportStatement[] importStatements = |
| importList.getImportStatements(); |
| for (final PsiImportStatement importStatement : importStatements) { |
| if (!importStatement.isOnDemand()) { |
| registerError(importStatement); |
| } |
| } |
| } |
| } |
| } |