5 // Alexander Chebaturkin (chebaturkin@gmail.com)
7 // Copyright (C) 2011 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.
30 using Mono.CodeContracts.Static.Lattices;
32 namespace Mono.CodeContracts.Static.Analysis.NonNull {
34 where E : IEquatable<E>
35 where V : IEquatable<V> {
36 public static readonly Domain<E, V> BottomValue
37 = new Domain<E, V> (SetDomain<V>.BottomValue, SetDomain<V>.BottomValue);
39 public SetDomain<V> NonNulls;
40 public SetDomain<V> Nulls;
42 public Domain(SetDomain<V> nonNulls, SetDomain<V> nulls)
44 this.NonNulls = nonNulls;
48 public bool IsNonNull(V v)
50 return this.NonNulls.Contains (v);
53 public bool IsNull(V v)
55 return this.Nulls.Contains (v);