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// NegateRelationalExpressionAction.cs
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// Mansheng Yang <lightyang0@gmail.com>
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// Copyright (c) 2012 Mansheng Yang <lightyang0@gmail.com>
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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namespace ICSharpCode.NRefactory.CSharp.Refactoring
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[ContextAction ("Negate an relational expression", Description = "Negate an relational expression.")]
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public class NegateRelationalExpressionAction : SpecializedCodeAction<BinaryOperatorExpression>
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protected override CodeAction GetAction (RefactoringContext context, BinaryOperatorExpression node)
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var newOp = CSharpUtil.NegateRelationalOperator (node.Operator);
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if (newOp != BinaryOperatorType.Any && node.OperatorToken.Contains (context.Location)) {
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var operatorToken = BinaryOperatorExpression.GetOperatorRole (node.Operator).Token;
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return new CodeAction (string.Format (context.TranslateString ("Negate '{0}'"), operatorToken),
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var expr = new BinaryOperatorExpression (node.Left.Clone (), newOp, node.Right.Clone ());
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script.Replace (node, expr);
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}, node.OperatorToken);