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.
31 namespace Mono.CodeContracts.Static.Analysis.Numerical {
32 class IntervalAssumer<TVar, TExpr> : IntervalRationalAssumerBase<TVar, TExpr, Interval>
33 where TVar : IEquatable<TVar> {
34 public override IntervalEnvironmentBase<TVar, TExpr, Interval, Rational> AssumeNotEqual
35 (TExpr left, TExpr right, IntervalEnvironmentBase<TVar, TExpr, Interval, Rational> env)
37 IntervalInference.InferenceResult<TVar, Interval> resultLeft;
38 IntervalInference.InferenceResult<TVar, Interval> resultRight;
39 IntervalInference.ConstraintsFor.NotEqual (left, right, env.Decoder, env, out resultLeft,
42 IntervalInference.InferenceResult<TVar, Interval> join = resultLeft.Join (resultRight);
46 return this.AssumeConstraints (join.Constraints, env);
49 public override IntervalEnvironmentBase<TVar, TExpr, Interval, Rational> AssumeNotEqualToZero
50 (TVar v, IntervalEnvironmentBase<TVar, TExpr, Interval, Rational> env)
52 //do nothing, we can't exclude one point