| /* |
| * Copyright 2008-2011 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.numeric; |
| |
| import com.intellij.codeInspection.ProblemDescriptor; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.util.text.StringUtil; |
| import com.intellij.psi.*; |
| import com.intellij.psi.tree.IElementType; |
| import com.intellij.psi.util.TypeConversionUtil; |
| 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 com.siyeh.ig.psiutils.ExpressionUtils; |
| import com.siyeh.ig.psiutils.TypeUtils; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| public class CharUsedInArithmeticContextInspection extends BaseInspection { |
| |
| @Override |
| @NotNull |
| public String getDisplayName() { |
| return InspectionGadgetsBundle.message("char.used.in.arithmetic.context.display.name"); |
| } |
| |
| @Override |
| @NotNull |
| protected String buildErrorString(Object... infos) { |
| return InspectionGadgetsBundle.message("char.used.in.arithmetic.context.problem.descriptor"); |
| } |
| |
| @NotNull |
| @Override |
| protected InspectionGadgetsFix[] buildFixes(Object... infos) { |
| final List<InspectionGadgetsFix> result = new ArrayList<InspectionGadgetsFix>(); |
| final PsiElement expression = (PsiElement)infos[0]; |
| PsiElement parent = expression.getParent(); |
| if (parent instanceof PsiExpression) { |
| final PsiExpression binaryExpression = (PsiExpression)parent; |
| final PsiType type = binaryExpression.getType(); |
| if (type instanceof PsiPrimitiveType && !type.equals(PsiType.CHAR)) { |
| final String typeText = type.getCanonicalText(); |
| result.add(new CharUsedInArithmeticContentCastFix(typeText)); |
| } |
| } |
| if (!(expression instanceof PsiLiteralExpression)) { |
| return result.toArray(new InspectionGadgetsFix[result.size()]); |
| } |
| while (parent instanceof PsiPolyadicExpression) { |
| if (ExpressionUtils.hasStringType((PsiExpression)parent)) { |
| result.add(new CharUsedInArithmeticContentFix()); |
| break; |
| } |
| parent = parent.getParent(); |
| } |
| |
| return result.toArray(new InspectionGadgetsFix[result.size()]); |
| } |
| |
| private static class CharUsedInArithmeticContentFix extends InspectionGadgetsFix { |
| @Override |
| @NotNull |
| public String getFamilyName() { |
| return getName(); |
| } |
| |
| @Override |
| @NotNull |
| public String getName() { |
| return InspectionGadgetsBundle.message("char.used.in.arithmetic.context.quickfix"); |
| } |
| |
| @Override |
| protected void doFix(Project project, ProblemDescriptor descriptor) throws IncorrectOperationException { |
| final PsiElement element = descriptor.getPsiElement(); |
| if (!(element instanceof PsiLiteralExpression)) { |
| return; |
| } |
| final PsiLiteralExpression literalExpression = (PsiLiteralExpression)element; |
| final Object literal = literalExpression.getValue(); |
| if (!(literal instanceof Character)) { |
| return; |
| } |
| final String escaped = StringUtil.escapeStringCharacters(literal.toString()); |
| PsiReplacementUtil.replaceExpression(literalExpression, '\"' + escaped + '"'); |
| } |
| } |
| |
| private static class CharUsedInArithmeticContentCastFix extends InspectionGadgetsFix { |
| |
| private final String typeText; |
| |
| CharUsedInArithmeticContentCastFix(String typeText) { |
| this.typeText = typeText; |
| } |
| |
| @Override |
| @NotNull |
| public String getName() { |
| return InspectionGadgetsBundle.message("char.used.in.arithmetic.context.cast.quickfix", typeText); |
| } |
| |
| @NotNull |
| @Override |
| public String getFamilyName() { |
| return "Insert cast"; |
| } |
| |
| @Override |
| protected void doFix(Project project, ProblemDescriptor descriptor) throws IncorrectOperationException { |
| final PsiElement element = descriptor.getPsiElement(); |
| if (!(element instanceof PsiExpression)) { |
| return; |
| } |
| final PsiExpression expression = (PsiExpression)element; |
| final String expressionText = expression.getText(); |
| PsiReplacementUtil.replaceExpression(expression, '(' + typeText + ')' + expressionText); |
| } |
| } |
| |
| @Override |
| public BaseInspectionVisitor buildVisitor() { |
| return new CharUsedInArithmeticContextVisitor(); |
| } |
| |
| private static class CharUsedInArithmeticContextVisitor extends BaseInspectionVisitor { |
| |
| @Override |
| public void visitPolyadicExpression(PsiPolyadicExpression expression) { |
| super.visitPolyadicExpression(expression); |
| final IElementType tokenType = expression.getOperationTokenType(); |
| if (ComparisonUtils.isComparisonOperation(tokenType)) { |
| return; |
| } |
| final PsiExpression[] operands = expression.getOperands(); |
| PsiType leftType = operands[0].getType(); |
| for (int i = 1; i < operands.length; i++) { |
| final PsiExpression operand = operands[i]; |
| final PsiType rightType = operand.getType(); |
| final PsiType expressionType = TypeConversionUtil.calcTypeForBinaryExpression(leftType, rightType, tokenType, true); |
| if (TypeUtils.isJavaLangString(expressionType)) { |
| return; |
| } |
| if (PsiType.CHAR.equals(rightType)) { |
| registerError(operand, operand); |
| } |
| if (PsiType.CHAR.equals(leftType) && i == 1) { |
| registerError(operands[0], operands[0]); |
| } |
| leftType = rightType; |
| } |
| } |
| } |
| } |