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//
// ExpressionOperator.cs
//
// Authors:
// Alexander Chebaturkin (chebaturkin@gmail.com)
//
// Copyright (C) 2012 Alexander Chebaturkin
//
// 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.Collections.Generic;
namespace Mono.CodeContracts.Static.Analysis.Numerical {
public enum ExpressionOperator {
Constant,
Variable,
Not,
And,
Or,
Xor,
LogicalAnd,
LogicalOr,
LogicalNot,
Equal,
Equal_Obj,
NotEqual,
LessThan,
LessEqualThan,
GreaterThan,
GreaterEqualThan,
Add,
Sub,
Mult,
Div,
Mod,
UnaryMinus,
SizeOf,
Unknown,
ConvertToInt32
}
static class ExpressionOperatorExtensions {
static readonly HashSet<ExpressionOperator> relationalOperators = new HashSet<ExpressionOperator> ();
static ExpressionOperatorExtensions ()
{
relationalOperators.Add (ExpressionOperator.LessThan);
relationalOperators.Add (ExpressionOperator.LessEqualThan);
relationalOperators.Add (ExpressionOperator.GreaterThan);
relationalOperators.Add (ExpressionOperator.GreaterEqualThan);
relationalOperators.Add (ExpressionOperator.Equal);
relationalOperators.Add (ExpressionOperator.Equal_Obj);
relationalOperators.Add (ExpressionOperator.NotEqual);
}
public static bool IsUnary (this ExpressionOperator op)
{
return op == ExpressionOperator.UnaryMinus || op == ExpressionOperator.Not;
}
public static bool IsZerary (this ExpressionOperator op)
{
return op == ExpressionOperator.Constant || op == ExpressionOperator.Variable;
}
public static bool IsBinary (this ExpressionOperator op)
{
return !op.IsUnary () && !op.IsZerary ();
}
public static bool IsGreaterThan (this ExpressionOperator op)
{
return op == ExpressionOperator.GreaterThan;
}
public static bool IsGreaterEqualThan (this ExpressionOperator op)
{
return op == ExpressionOperator.GreaterEqualThan;
}
public static bool IsLessThan (this ExpressionOperator op)
{
return op == ExpressionOperator.LessThan;
}
public static bool IsLessEqualThan (this ExpressionOperator op)
{
return op == ExpressionOperator.LessEqualThan;
}
public static bool IsRelational (this ExpressionOperator op)
{
return relationalOperators.Contains (op);
}
}
}
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