2 // ExpressionOperator.cs
5 // Alexander Chebaturkin (chebaturkin@gmail.com)
7 // Copyright (C) 2012 Alexander Chebaturkin
9 // Permission is hereby granted, free of charge, to any person obtaining
10 // a copy of this software and associated documentation files (the
11 // "Software"), to deal in the Software without restriction, including
12 // without limitation the rights to use, copy, modify, merge, publish,
13 // distribute, sublicense, and/or sell copies of the Software, and to
14 // permit persons to whom the Software is furnished to do so, subject to
15 // the following conditions:
17 // The above copyright notice and this permission notice shall be
18 // included in all copies or substantial portions of the Software.
20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 using System.Collections.Generic;
31 namespace Mono.CodeContracts.Static.Analysis.Numerical {
32 public enum ExpressionOperator {
61 static class ExpressionOperatorExtensions {
62 static readonly HashSet<ExpressionOperator> relationalOperators = new HashSet<ExpressionOperator> ();
64 static ExpressionOperatorExtensions ()
66 relationalOperators.Add (ExpressionOperator.LessThan);
67 relationalOperators.Add (ExpressionOperator.LessEqualThan);
68 relationalOperators.Add (ExpressionOperator.GreaterThan);
69 relationalOperators.Add (ExpressionOperator.GreaterEqualThan);
70 relationalOperators.Add (ExpressionOperator.Equal);
71 relationalOperators.Add (ExpressionOperator.Equal_Obj);
72 relationalOperators.Add (ExpressionOperator.NotEqual);
75 public static bool IsUnary (this ExpressionOperator op)
77 return op == ExpressionOperator.UnaryMinus || op == ExpressionOperator.Not;
80 public static bool IsZerary (this ExpressionOperator op)
82 return op == ExpressionOperator.Constant || op == ExpressionOperator.Variable;
85 public static bool IsBinary (this ExpressionOperator op)
87 return !op.IsUnary () && !op.IsZerary ();
90 public static bool IsGreaterThan (this ExpressionOperator op)
92 return op == ExpressionOperator.GreaterThan;
95 public static bool IsGreaterEqualThan (this ExpressionOperator op)
97 return op == ExpressionOperator.GreaterEqualThan;
100 public static bool IsLessThan (this ExpressionOperator op)
102 return op == ExpressionOperator.LessThan;
105 public static bool IsLessEqualThan (this ExpressionOperator op)
107 return op == ExpressionOperator.LessEqualThan;
110 public static bool IsRelational (this ExpressionOperator op)
112 return relationalOperators.Contains (op);