| /* |
| * Copyright 2007-2008 Dave Griffith |
| * |
| * 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 org.jetbrains.plugins.groovy.codeInspection.utils; |
| |
| import com.intellij.psi.tree.IElementType; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| import org.jetbrains.plugins.groovy.lang.psi.impl.utils.ComparisonUtils; |
| import org.jetbrains.plugins.groovy.lang.psi.impl.utils.ParenthesesUtils; |
| import org.jetbrains.plugins.groovy.lang.lexer.GroovyTokenTypes; |
| import org.jetbrains.plugins.groovy.lang.psi.api.auxiliary.GrCondition; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrBinaryExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrParenthesizedExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrUnaryExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.util.PsiUtil; |
| |
| public class BoolUtils { |
| |
| public static boolean isNegation(@NotNull GrExpression exp) { |
| if (!(exp instanceof GrUnaryExpression)) { |
| return false; |
| } |
| final GrUnaryExpression prefixExp = (GrUnaryExpression) exp; |
| final IElementType sign = prefixExp.getOperationTokenType(); |
| return GroovyTokenTypes.mBNOT.equals(sign); |
| } |
| |
| public static boolean isTrue(@Nullable GrCondition condition) { |
| if (condition == null) { |
| return false; |
| } |
| return "true".equals(condition.getText()); |
| } |
| |
| public static boolean isFalse(GrCondition condition) { |
| if (condition == null) { |
| return false; |
| } |
| return "false".equals(condition.getText()); |
| } |
| |
| public static String getNegatedExpressionText(@NotNull GrExpression condition) { |
| if (condition instanceof GrParenthesizedExpression) { |
| final GrExpression contentExpression = ((GrParenthesizedExpression) condition).getOperand(); |
| if (contentExpression == null) return "()"; |
| return '(' + getNegatedExpressionText(contentExpression) + ')'; |
| } else if (isNegation(condition)) { |
| final GrExpression negated = getNegated(condition); |
| return negated.getText(); |
| } else if (ComparisonUtils.isComparison(condition)) { |
| final GrBinaryExpression binaryExpression = (GrBinaryExpression) condition; |
| final IElementType sign = binaryExpression.getOperationTokenType(); |
| final String negatedComparison = ComparisonUtils.getNegatedComparison(sign); |
| final GrExpression lhs = binaryExpression.getLeftOperand(); |
| final GrExpression rhs = binaryExpression.getRightOperand(); |
| assert rhs != null; |
| return lhs.getText() + negatedComparison + rhs.getText(); |
| } else if (ParenthesesUtils.getPrecedence(condition) > |
| ParenthesesUtils.PREFIX_PRECEDENCE) { |
| return "!(" + condition.getText() + ')'; |
| } else { |
| return '!' + condition.getText(); |
| } |
| } |
| |
| private static GrExpression getNegated(@NotNull GrExpression exp) { |
| final GrUnaryExpression prefixExp = (GrUnaryExpression) exp; |
| final GrExpression operand = prefixExp.getOperand(); |
| return (GrExpression)PsiUtil.skipParentheses(operand, false); |
| } |
| } |