| /* |
| * Copyright 2000-2014 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 org.jetbrains.plugins.groovy.lang.psi.impl.utils; |
| |
| import com.intellij.psi.tree.IElementType; |
| import org.jetbrains.annotations.NonNls; |
| import org.jetbrains.annotations.Nullable; |
| import org.jetbrains.plugins.groovy.lang.lexer.GroovyTokenTypes; |
| 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.api.statements.expressions.literals.GrLiteral; |
| import org.jetbrains.plugins.groovy.lang.psi.util.PsiUtil; |
| |
| public class BoolUtils { |
| private BoolUtils() { |
| super(); |
| } |
| |
| public static boolean isNegated(GrExpression exp) { |
| GrExpression ancestor = exp; |
| while (ancestor.getParent() instanceof GrParenthesizedExpression) { |
| ancestor = (GrExpression) ancestor.getParent(); |
| } |
| if (ancestor.getParent() instanceof GrUnaryExpression) { |
| final GrUnaryExpression prefixAncestor = |
| (GrUnaryExpression) ancestor.getParent(); |
| final IElementType sign = prefixAncestor.getOperationTokenType(); |
| if (GroovyTokenTypes.mLNOT.equals(sign)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| @Nullable |
| public static GrExpression findNegation(GrExpression exp) { |
| GrExpression ancestor = exp; |
| while (ancestor.getParent() instanceof GrParenthesizedExpression) { |
| ancestor = (GrExpression) ancestor.getParent(); |
| } |
| if (ancestor.getParent() instanceof GrUnaryExpression) { |
| final GrUnaryExpression prefixAncestor = |
| (GrUnaryExpression) ancestor.getParent(); |
| final IElementType sign = prefixAncestor.getOperationTokenType(); |
| if (GroovyTokenTypes.mLNOT.equals(sign)) { |
| return prefixAncestor; |
| } |
| } |
| return null; |
| } |
| |
| public static boolean isNegation(GrExpression exp) { |
| if (!(exp instanceof GrUnaryExpression)) { |
| return false; |
| } |
| final GrUnaryExpression prefixExp = (GrUnaryExpression) exp; |
| final IElementType sign = prefixExp.getOperationTokenType(); |
| return GroovyTokenTypes.mLNOT.equals(sign); |
| } |
| |
| public static GrExpression getNegated(GrExpression exp) { |
| final GrUnaryExpression prefixExp = (GrUnaryExpression) exp; |
| final GrExpression operand = prefixExp.getOperand(); |
| return (GrExpression)PsiUtil.skipParentheses(operand, false); |
| } |
| |
| public static boolean isBooleanLiteral(GrExpression exp) { |
| if (exp instanceof GrLiteral) { |
| final GrLiteral expression = (GrLiteral) exp; |
| @NonNls final String text = expression.getText(); |
| return "true".equals(text) || "false".equals(text); |
| } |
| return false; |
| } |
| |
| public static String getNegatedExpressionText(GrExpression condition) { |
| 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(); |
| } |
| } |
| } |
| |