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// /************************************************************
// *
// * Copyright (c) 2012 Matthew So So. All Rights Reserved
// *
// * Author: Matthew So
// *
// ************************************************************/
using System;
using bsn.GoldParser.Semantic;
using System.CodeDom;
namespace EntityMapper.Semantic{
public class Negate : Expression{
private readonly Expression _expression;
[Rule("<Negate Exp> ::= ~'-' <Value>")]
public Negate(Expression expression){
this._expression = expression;
}
public override CodeExpression GetValue(ExecutionContext ctx)
{
return new CodeBinaryOperatorExpression(new CodePrimitiveExpression(0), CodeBinaryOperatorType.Subtract, this._expression.GetValue(ctx));
}
}
}
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