| /* |
| * Copyright 2000-2012 JetBrains s.r.o. |
| * |
| * 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.performance; |
| |
| import com.intellij.codeInspection.ProblemDescriptor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.*; |
| 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.PsiReplacementUtil; |
| import org.jetbrains.annotations.Nls; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * @author Bas Leijdekkers |
| */ |
| public class ArraysAsListWithZeroOrOneArgumentInspection extends BaseInspection { |
| |
| @Nls |
| @NotNull |
| @Override |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message("arrays.as.list.with.zero.or.one.argument.display.name"); |
| } |
| |
| @NotNull |
| @Override |
| protected String buildErrorString(Object... infos) { |
| final Boolean isEmpty = (Boolean)infos[0]; |
| if (isEmpty.booleanValue()) { |
| return InspectionGadgetsBundle.message("arrays.as.list.with.zero.arguments.problem.descriptor"); |
| } |
| else { |
| return InspectionGadgetsBundle.message("arrays.as.list.with.one.argument.problem.descriptor"); |
| } |
| } |
| |
| @Nullable |
| @Override |
| protected InspectionGadgetsFix buildFix(Object... infos) { |
| final Boolean isEmpty = (Boolean)infos[0]; |
| return new ArraysAsListWithOneArgumentFix(isEmpty.booleanValue()); |
| } |
| |
| private static class ArraysAsListWithOneArgumentFix extends InspectionGadgetsFix { |
| |
| private final boolean myEmpty; |
| |
| private ArraysAsListWithOneArgumentFix(boolean isEmpty) { |
| myEmpty = isEmpty; |
| } |
| |
| @NotNull |
| @Override |
| public String getName() { |
| if (myEmpty) { |
| return InspectionGadgetsBundle.message("arrays.as.list.with.zero.arguments.quickfix"); |
| } |
| else { |
| return InspectionGadgetsBundle.message("arrays.as.list.with.one.argument.quickfix"); |
| } |
| } |
| |
| @NotNull |
| @Override |
| public String getFamilyName() { |
| return "Simplify"; |
| } |
| |
| @Override |
| protected void doFix(Project project, ProblemDescriptor descriptor) throws IncorrectOperationException { |
| final PsiElement element = descriptor.getPsiElement().getParent().getParent(); |
| if (!(element instanceof PsiMethodCallExpression)) { |
| return; |
| } |
| final PsiMethodCallExpression methodCallExpression = (PsiMethodCallExpression)element; |
| if (myEmpty) { |
| PsiReplacementUtil.replaceExpressionAndShorten(methodCallExpression, "java.util.Collections.emptyList()"); |
| } |
| else { |
| final PsiExpressionList argumentList = methodCallExpression.getArgumentList(); |
| PsiReplacementUtil.replaceExpressionAndShorten(methodCallExpression, "java.util.Collections.singletonList" + argumentList.getText()); |
| } |
| } |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new ArrayAsListWithOneArgumentVisitor(); |
| } |
| |
| private static class ArrayAsListWithOneArgumentVisitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitMethodCallExpression(PsiMethodCallExpression expression) { |
| super.visitMethodCallExpression(expression); |
| final PsiReferenceExpression methodExpression = expression.getMethodExpression(); |
| final String methodName = methodExpression.getReferenceName(); |
| if (!"asList".equals(methodName)) { |
| return; |
| } |
| final PsiExpressionList argumentList = expression.getArgumentList(); |
| final PsiExpression[] arguments = argumentList.getExpressions(); |
| if (arguments.length == 1) { |
| final PsiExpression argument = arguments[0]; |
| final PsiType type = argument.getType(); |
| if (type instanceof PsiArrayType) { |
| return; |
| } |
| } |
| else if (arguments.length != 0) { |
| return; |
| } |
| final PsiMethod method = expression.resolveMethod(); |
| if (method == null) { |
| return; |
| } |
| final PsiClass containingClass = method.getContainingClass(); |
| if (containingClass == null) { |
| return; |
| } |
| final String className = containingClass.getQualifiedName(); |
| if (!"java.util.Arrays".equals(className)) { |
| return; |
| } |
| registerMethodCallError(expression, Boolean.valueOf(arguments.length == 0)); |
| } |
| } |
| } |