| /* |
| * Copyright 2011-2013 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.bugs; |
| |
| import com.intellij.codeInspection.ProblemDescriptor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.*; |
| import com.intellij.psi.tree.IElementType; |
| 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 com.siyeh.ig.psiutils.ComparisonUtils; |
| import org.jetbrains.annotations.NonNls; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class ArrayEqualityInspection extends BaseInspection { |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message( |
| "array.comparison.display.name"); |
| } |
| |
| @Override |
| @NotNull |
| public String buildErrorString(Object... infos) { |
| return InspectionGadgetsBundle.message( |
| "array.comparison.problem.descriptor"); |
| } |
| |
| @Override |
| public InspectionGadgetsFix buildFix(Object... infos) { |
| final PsiArrayType type = (PsiArrayType)infos[0]; |
| final PsiType componentType = type.getComponentType(); |
| if (componentType instanceof PsiArrayType) { |
| return new ArrayEqualityFix(true); |
| } |
| return new ArrayEqualityFix(false); |
| } |
| |
| private static class ArrayEqualityFix extends InspectionGadgetsFix { |
| |
| private final boolean deepEquals; |
| |
| public ArrayEqualityFix(boolean deepEquals) { |
| this.deepEquals = deepEquals; |
| } |
| |
| @NotNull |
| @Override |
| public String getName() { |
| if (deepEquals) { |
| return InspectionGadgetsBundle.message( |
| "replace.with.arrays.deep.equals"); |
| } |
| else { |
| return InspectionGadgetsBundle.message( |
| "replace.with.arrays.equals"); |
| } |
| } |
| |
| @NotNull |
| @Override |
| public String getFamilyName() { |
| return "Replace with implicit equals"; |
| } |
| |
| @Override |
| protected void doFix(Project project, ProblemDescriptor descriptor) |
| throws IncorrectOperationException { |
| final PsiElement element = descriptor.getPsiElement(); |
| final PsiElement parent = element.getParent(); |
| if (!(parent instanceof PsiBinaryExpression)) { |
| return; |
| } |
| final PsiBinaryExpression binaryExpression = |
| (PsiBinaryExpression)parent; |
| final IElementType tokenType = |
| binaryExpression.getOperationTokenType(); |
| @NonNls final StringBuilder newExpressionText = new StringBuilder(); |
| if (JavaTokenType.NE.equals(tokenType)) { |
| newExpressionText.append('!'); |
| } |
| else if (!JavaTokenType.EQEQ.equals(tokenType)) { |
| return; |
| } |
| if (deepEquals) { |
| newExpressionText.append("java.util.Arrays.deepEquals("); |
| } |
| else { |
| newExpressionText.append("java.util.Arrays.equals("); |
| } |
| newExpressionText.append(binaryExpression.getLOperand().getText()); |
| newExpressionText.append(','); |
| final PsiExpression rhs = binaryExpression.getROperand(); |
| if (rhs == null) { |
| return; |
| } |
| newExpressionText.append(rhs.getText()); |
| newExpressionText.append(')'); |
| PsiReplacementUtil.replaceExpressionAndShorten(binaryExpression, |
| newExpressionText.toString()); |
| } |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new ArrayEqualityVisitor(); |
| } |
| |
| private static class ArrayEqualityVisitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitBinaryExpression(@NotNull PsiBinaryExpression expression) { |
| super.visitBinaryExpression(expression); |
| final PsiExpression rhs = expression.getROperand(); |
| if (rhs == null || !ComparisonUtils.isEqualityComparison(expression)) { |
| return; |
| } |
| final PsiExpression lhs = expression.getLOperand(); |
| final PsiType lhsType = lhs.getType(); |
| if (!(lhsType instanceof PsiArrayType) || !(rhs.getType() instanceof PsiArrayType)) { |
| return; |
| } |
| registerError(expression.getOperationSign(), lhsType); |
| } |
| } |
| } |