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// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
// This code is distributed under MIT X11 license (for details please see \doc\license.txt)
using System;
using System.Collections.Generic;
namespace ICSharpCode.NRefactory.VB.Ast
{
/// <summary>
/// Operator Expression
/// </summary>
public class UnaryOperatorExpression : Expression
{
public readonly static Role<VBTokenNode> OperatorRole = BinaryOperatorExpression.OperatorRole;
public UnaryOperatorExpression()
{
}
public UnaryOperatorExpression(UnaryOperatorType op, Expression expression)
{
this.Operator = op;
this.Expression = expression;
}
public UnaryOperatorType Operator {
get;
set;
}
public VBTokenNode OperatorToken {
get { return GetChildByRole (OperatorRole); }
}
public Expression Expression {
get { return GetChildByRole (Roles.Expression); }
set { SetChildByRole (Roles.Expression, value); }
}
public override S AcceptVisitor<T, S> (IAstVisitor<T, S> visitor, T data)
{
return visitor.VisitUnaryOperatorExpression(this, data);
}
protected internal override bool DoMatch(AstNode other, PatternMatching.Match match)
{
UnaryOperatorExpression o = other as UnaryOperatorExpression;
return o != null && this.Operator == o.Operator && this.Expression.DoMatch(o.Expression, match);
}
public static string GetOperatorSymbol(UnaryOperatorType op)
{
switch (op) {
case UnaryOperatorType.Not:
return "Not";
case UnaryOperatorType.Minus:
return "-";
case UnaryOperatorType.Plus:
return "+";
default:
throw new NotSupportedException("Invalid value for UnaryOperatorType");
}
}
}
public enum UnaryOperatorType
{
/// <summary>Logical/Bitwise not (Not a)</summary>
Not,
/// <summary>Unary minus (-a)</summary>
Minus,
/// <summary>Unary plus (+a)</summary>
Plus,
/// <summary>AddressOf</summary>
AddressOf,
/// <summary>Await</summary>
Await
}
}
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