75 lines
3.0 KiB
C#
75 lines
3.0 KiB
C#
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//
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// TresholdDB.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.Collections.Generic;
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using Mono.CodeContracts.Static.DataStructures;
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namespace Mono.CodeContracts.Static.Analysis.Numerical {
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static class ThresholdDB {
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static RationalThreshold rational = new RationalThreshold (10);
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public static void Reset ()
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{
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rational = new RationalThreshold (10);
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}
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public static void Add (IEnumerable<int> values)
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{
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foreach (var value in values) {
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rational.Add (Rational.For (value));
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}
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}
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public static Rational GetNext (Rational value)
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{
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return rational.GetNext (value);
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}
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public static Rational GetPrevious (Rational value)
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{
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return rational.GetPrevious (value);
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}
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public static bool TryGetAThreshold<TVar, TExpr> (TExpr e, IExpressionDecoder<TVar, TExpr> decoder, out List<int> thresholds)
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{
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var visitor = new GetThresholdVisitor<TVar, TExpr> (decoder);
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if (visitor.Visit (e, Dummy.Value)) {
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thresholds = new List<int> ();
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foreach (var threshold in visitor.Thresholds) {
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thresholds.Add (threshold - 1);
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thresholds.Add (threshold);
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thresholds.Add (threshold + 1);
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}
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return true;
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}
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return false.Without (out thresholds);
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}
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}
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}
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