77 lines
3.2 KiB
C#
77 lines
3.2 KiB
C#
//
|
|
// IntervalBase.cs
|
|
//
|
|
// Authors:
|
|
// Alexander Chebaturkin (chebaturkin@gmail.com)
|
|
//
|
|
// Copyright (C) 2012 Alexander Chebaturkin
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining
|
|
// a copy of this software and associated documentation files (the
|
|
// "Software"), to deal in the Software without restriction, including
|
|
// without limitation the rights to use, copy, modify, merge, publish,
|
|
// distribute, sublicense, and/or sell copies of the Software, and to
|
|
// permit persons to whom the Software is furnished to do so, subject to
|
|
// the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be
|
|
// included in all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
//
|
|
|
|
using System.IO;
|
|
|
|
using Mono.CodeContracts.Static.Lattices;
|
|
|
|
namespace Mono.CodeContracts.Static.Analysis.Numerical {
|
|
/// <summary>
|
|
/// Represents a generic class for intervals on numeric values.
|
|
/// </summary>
|
|
public abstract class IntervalBase<TInterval, TNumeric> : IAbstractDomain<TInterval>
|
|
where TInterval : IntervalBase<TInterval, TNumeric> {
|
|
protected IntervalBase (TNumeric lowerBound, TNumeric upperBound)
|
|
{
|
|
LowerBound = lowerBound;
|
|
UpperBound = upperBound;
|
|
}
|
|
|
|
public TNumeric UpperBound { get; protected set; }
|
|
public TNumeric LowerBound { get; protected set; }
|
|
|
|
public abstract TInterval Top { get; }
|
|
public abstract TInterval Bottom { get; }
|
|
|
|
public abstract bool IsTop { get; }
|
|
public abstract bool IsBottom { get; }
|
|
|
|
public bool IsSinglePoint { get { return this.IsNormal () && LowerBound.Equals (UpperBound); } }
|
|
public bool IsFinite { get { return this.IsNormal () && IsFiniteBound (LowerBound) && IsFiniteBound (UpperBound); } }
|
|
|
|
public abstract bool LessEqual (TInterval that);
|
|
|
|
public abstract TInterval Join (TInterval that, bool widening, out bool weaker);
|
|
public abstract TInterval Join (TInterval that);
|
|
|
|
public abstract TInterval Widen (TInterval that);
|
|
public abstract TInterval Meet (TInterval that);
|
|
|
|
public abstract TInterval ImmutableVersion ();
|
|
public abstract TInterval Clone ();
|
|
|
|
public abstract void Dump (TextWriter tw);
|
|
|
|
public override string ToString ()
|
|
{
|
|
return string.Format ("[{0}, {1}]{2}", LowerBound, UpperBound, this.BottomSymbolIfAny ());
|
|
}
|
|
|
|
protected abstract bool IsFiniteBound (TNumeric n);
|
|
}
|
|
} |