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.
32 using Mono.CodeContracts.Static.Lattices;
34 namespace Mono.CodeContracts.Static.Analysis.NonNull {
35 struct NonNullDomain<V> where V : IEquatable<V> {
36 public static readonly NonNullDomain<V> BottomValue = new NonNullDomain<V> (SetDomain<V>.BottomValue, SetDomain<V>.BottomValue);
38 public SetDomain<V> NonNulls;
39 public SetDomain<V> Nulls;
41 public NonNullDomain(SetDomain<V> nonNulls, SetDomain<V> nulls)
43 this.NonNulls = nonNulls;
47 public bool IsNonNull(V v)
49 return this.NonNulls.Contains (v);
52 public bool IsNull(V v)
54 return this.Nulls.Contains (v);
57 public override string ToString()
59 var sw = new StringWriter();
61 sw.WriteLine("Nulls:");
66 sw.WriteLine("Non-Nulls:");
68 this.NonNulls.Dump(sw);
71 return sw.ToString ();