56 lines
2.6 KiB
C#
56 lines
2.6 KiB
C#
//
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// IntervalAssumer.cs
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//
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// Authors:
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// Alexander Chebaturkin (chebaturkin@gmail.com)
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//
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// Copyright (C) 2012 Alexander Chebaturkin
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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namespace Mono.CodeContracts.Static.Analysis.Numerical {
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class IntervalAssumer<TVar, TExpr> : IntervalRationalAssumerBase<TVar, TExpr, Interval>
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where TVar : IEquatable<TVar> {
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public override IntervalEnvironmentBase<TVar, TExpr, Interval, Rational> AssumeNotEqual
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(TExpr left, TExpr right, IntervalEnvironmentBase<TVar, TExpr, Interval, Rational> env)
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{
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IntervalInference.InferenceResult<TVar, Interval> resultLeft;
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IntervalInference.InferenceResult<TVar, Interval> resultRight;
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IntervalInference.ConstraintsFor.NotEqual (left, right, env.Decoder, env, out resultLeft,
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out resultRight);
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IntervalInference.InferenceResult<TVar, Interval> join = resultLeft.Join (resultRight);
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if (join.IsBottom)
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return env.Bottom;
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return this.AssumeConstraints (join.Constraints, env);
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}
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public override IntervalEnvironmentBase<TVar, TExpr, Interval, Rational> AssumeNotEqualToZero
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(TVar v, IntervalEnvironmentBase<TVar, TExpr, Interval, Rational> env)
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{
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//do nothing, we can't exclude one point
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return env;
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}
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}
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} |