| /* |
| * Copyright 2010-2012 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.style; |
| |
| import com.intellij.codeInspection.CleanupLocalInspectionTool; |
| import com.intellij.codeInspection.ProblemDescriptor; |
| import com.intellij.codeInspection.ProblemHighlightType; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.*; |
| import com.intellij.psi.infos.CandidateInfo; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.util.IncorrectOperationException; |
| import com.siyeh.InspectionGadgetsBundle; |
| import com.siyeh.ig.BaseInspection; |
| import com.siyeh.ig.BaseInspectionVisitor; |
| import com.siyeh.ig.InspectionGadgetsFix; |
| import com.siyeh.ig.psiutils.ImportUtils; |
| import org.jetbrains.annotations.Nls; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class UnnecessarilyQualifiedStaticallyImportedElementInspection extends BaseInspection implements CleanupLocalInspectionTool{ |
| |
| @Nls |
| @NotNull |
| @Override |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message("unnecessarily.qualified.statically.imported.element.display.name"); |
| } |
| |
| @NotNull |
| @Override |
| protected String buildErrorString(Object... infos) { |
| final PsiMember member = (PsiMember)infos[0]; |
| return InspectionGadgetsBundle.message("unnecessarily.qualified.statically.imported.element.problem.descriptor", member.getName()); |
| } |
| |
| @Override |
| protected InspectionGadgetsFix buildFix(Object... infos) { |
| return new UnnecessarilyQualifiedStaticallyImportedElementFix(); |
| } |
| |
| private static class UnnecessarilyQualifiedStaticallyImportedElementFix extends InspectionGadgetsFix { |
| |
| @Override |
| @NotNull |
| public String getName() { |
| return InspectionGadgetsBundle.message("unnecessarily.qualified.statically.imported.element.quickfix"); |
| } |
| @Override |
| @NotNull |
| public String getFamilyName() { |
| return getName(); |
| } |
| |
| @Override |
| protected void doFix(Project project, ProblemDescriptor descriptor) |
| throws IncorrectOperationException { |
| final PsiElement element = descriptor.getPsiElement(); |
| element.delete(); |
| } |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new UnnecessarilyQualifiedStaticallyImportedElementVisitor(); |
| } |
| |
| private static class UnnecessarilyQualifiedStaticallyImportedElementVisitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitReferenceExpression(PsiReferenceExpression expression) { |
| visitReferenceElement(expression); |
| } |
| |
| @Override |
| public void visitReferenceElement(PsiJavaCodeReferenceElement reference) { |
| super.visitReferenceElement(reference); |
| if (reference instanceof PsiMethodReferenceExpression) { |
| return; |
| } |
| final PsiElement qualifier = reference.getQualifier(); |
| if (!(qualifier instanceof PsiJavaCodeReferenceElement)) { |
| return; |
| } |
| if (PsiTreeUtil.getParentOfType(reference, PsiImportStatementBase.class) != null) { |
| return; |
| } |
| if (UnnecessarilyQualifiedStaticUsageInspection.isGenericReference(reference, (PsiJavaCodeReferenceElement)qualifier)) return; |
| final PsiElement target = reference.resolve(); |
| if (!(target instanceof PsiMember)) { |
| return; |
| } |
| final PsiMember member = (PsiMember)target; |
| final PsiJavaCodeReferenceElement referenceExpression = (PsiJavaCodeReferenceElement)qualifier; |
| final PsiElement qualifierTarget = referenceExpression.resolve(); |
| if (!(qualifierTarget instanceof PsiClass)) { |
| return; |
| } |
| if (!ImportUtils.isStaticallyImported(member, reference)) { |
| return; |
| } |
| if (!isReferenceCorrectWithoutQualifier(reference, member)) { |
| return; |
| } |
| registerError(qualifier, ProblemHighlightType.LIKE_UNUSED_SYMBOL, member); |
| } |
| |
| private static boolean isReferenceCorrectWithoutQualifier(PsiJavaCodeReferenceElement reference, PsiMember member) { |
| final String referenceName = reference.getReferenceName(); |
| if (referenceName == null) { |
| return false; |
| } |
| final Project project = reference.getProject(); |
| final JavaPsiFacade psiFacade = JavaPsiFacade.getInstance(project); |
| final PsiResolveHelper resolveHelper = psiFacade.getResolveHelper(); |
| if (member instanceof PsiMethod) { |
| final PsiElementFactory factory = psiFacade.getElementFactory(); |
| final PsiExpression expression = factory.createExpressionFromText(referenceName + "()", reference); |
| final CandidateInfo[] methodCandidates = resolveHelper.getReferencedMethodCandidates((PsiCallExpression)expression, false); |
| for (CandidateInfo methodCandidate : methodCandidates) { |
| if (!(methodCandidate.getCurrentFileResolveScope() instanceof PsiImportStaticStatement)) { |
| return false; |
| } |
| } |
| } |
| else if (member instanceof PsiField) { |
| final PsiVariable variable = resolveHelper.resolveAccessibleReferencedVariable(referenceName, reference); |
| if (!member.equals(variable)) { |
| return false; |
| } |
| } |
| else if (member instanceof PsiClass) { |
| final PsiClass aClass = resolveHelper.resolveReferencedClass(referenceName, reference); |
| if (!member.equals(aClass)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| } |
| } |