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//
// UnaryOperatorExpression.cs
//
// Author:
// Mike Krüger <mkrueger@novell.com>
//
// Copyright (c) 2009 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using System.Linq.Expressions;
namespace ICSharpCode.NRefactory.CSharp
{
/// <summary>
/// Operator Expression
/// </summary>
public class UnaryOperatorExpression : Expression
{
public readonly static TokenRole NotRole = new TokenRole ("!");
public readonly static TokenRole BitNotRole = new TokenRole ("~");
public readonly static TokenRole MinusRole = new TokenRole ("-");
public readonly static TokenRole PlusRole = new TokenRole ("+");
public readonly static TokenRole IncrementRole = new TokenRole ("++");
public readonly static TokenRole DecrementRole = new TokenRole ("--");
public readonly static TokenRole DereferenceRole = new TokenRole ("*");
public readonly static TokenRole AddressOfRole = new TokenRole ("&");
public readonly static TokenRole AwaitRole = new TokenRole ("await");
public UnaryOperatorExpression()
{
}
public UnaryOperatorExpression(UnaryOperatorType op, Expression expression)
{
this.Operator = op;
this.Expression = expression;
}
public UnaryOperatorType Operator {
get;
set;
}
public CSharpTokenNode OperatorToken {
get { return GetChildByRole (GetOperatorRole (Operator)); }
}
static Expression NoUnaryExpressionError = new ErrorExpression ("No unary expression");
public Expression Expression {
get { return GetChildByRole (Roles.Expression) ?? NoUnaryExpressionError; }
set { SetChildByRole (Roles.Expression, value); }
}
public override void AcceptVisitor (IAstVisitor visitor)
{
visitor.VisitUnaryOperatorExpression (this);
}
public override T AcceptVisitor<T> (IAstVisitor<T> visitor)
{
return visitor.VisitUnaryOperatorExpression (this);
}
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 == UnaryOperatorType.Any || this.Operator == o.Operator)
&& this.Expression.DoMatch(o.Expression, match);
}
public static TokenRole GetOperatorRole(UnaryOperatorType op)
{
switch (op) {
case UnaryOperatorType.Not:
return NotRole;
case UnaryOperatorType.BitNot:
return BitNotRole;
case UnaryOperatorType.Minus:
return MinusRole;
case UnaryOperatorType.Plus:
return PlusRole;
case UnaryOperatorType.Increment:
case UnaryOperatorType.PostIncrement:
return IncrementRole;
case UnaryOperatorType.PostDecrement:
case UnaryOperatorType.Decrement:
return DecrementRole;
case UnaryOperatorType.Dereference:
return DereferenceRole;
case UnaryOperatorType.AddressOf:
return AddressOfRole;
case UnaryOperatorType.Await:
return AwaitRole;
default:
throw new NotSupportedException("Invalid value for UnaryOperatorType");
}
}
public static ExpressionType GetLinqNodeType(UnaryOperatorType op, bool checkForOverflow)
{
switch (op) {
case UnaryOperatorType.Not:
return ExpressionType.Not;
case UnaryOperatorType.BitNot:
return ExpressionType.OnesComplement;
case UnaryOperatorType.Minus:
return checkForOverflow ? ExpressionType.NegateChecked : ExpressionType.Negate;
case UnaryOperatorType.Plus:
return ExpressionType.UnaryPlus;
case UnaryOperatorType.Increment:
return ExpressionType.PreIncrementAssign;
case UnaryOperatorType.Decrement:
return ExpressionType.PreDecrementAssign;
case UnaryOperatorType.PostIncrement:
return ExpressionType.PostIncrementAssign;
case UnaryOperatorType.PostDecrement:
return ExpressionType.PostDecrementAssign;
case UnaryOperatorType.Dereference:
case UnaryOperatorType.AddressOf:
case UnaryOperatorType.Await:
return ExpressionType.Extension;
default:
throw new NotSupportedException("Invalid value for UnaryOperatorType");
}
}
}
public enum UnaryOperatorType
{
/// <summary>
/// Any unary operator (used in pattern matching)
/// </summary>
Any,
/// <summary>Logical not (!a)</summary>
Not,
/// <summary>Bitwise not (~a)</summary>
BitNot,
/// <summary>Unary minus (-a)</summary>
Minus,
/// <summary>Unary plus (+a)</summary>
Plus,
/// <summary>Pre increment (++a)</summary>
Increment,
/// <summary>Pre decrement (--a)</summary>
Decrement,
/// <summary>Post increment (a++)</summary>
PostIncrement,
/// <summary>Post decrement (a--)</summary>
PostDecrement,
/// <summary>Dereferencing (*a)</summary>
Dereference,
/// <summary>Get address (&a)</summary>
AddressOf,
/// <summary>C# 5.0 await</summary>
Await
}
}
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