80 lines
2.7 KiB
C#
80 lines
2.7 KiB
C#
//
|
|
// EliminateEdgeUpdate.cs
|
|
//
|
|
// Authors:
|
|
// Alexander Chebaturkin (chebaturkin@gmail.com)
|
|
//
|
|
// Copyright (C) 2011 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;
|
|
|
|
namespace Mono.CodeContracts.Static.Analysis.HeapAnalysis.SymbolicGraph {
|
|
class EliminateEdgeUpdate<TFunc, TAbstractDomain> : Update<TFunc, TAbstractDomain>
|
|
where TFunc : IEquatable<TFunc>, IConstantInfo
|
|
where TAbstractDomain : IAbstractDomainForEGraph<TAbstractDomain>, IEquatable<TAbstractDomain> {
|
|
private readonly SymValue from;
|
|
private readonly TFunc function;
|
|
|
|
public EliminateEdgeUpdate (SymValue sv, TFunc function)
|
|
{
|
|
this.from = sv;
|
|
this.function = function;
|
|
}
|
|
|
|
#region Overrides of Update
|
|
public override void ReplayElimination (MergeInfo<TFunc, TAbstractDomain> merge)
|
|
{
|
|
if (!merge.IsCommon (this.from))
|
|
return;
|
|
|
|
merge.Result.Eliminate (this.function, this.from);
|
|
}
|
|
|
|
public override void Replay (MergeInfo<TFunc, TAbstractDomain> merge)
|
|
{
|
|
if (!merge.IsCommon (this.from))
|
|
return;
|
|
|
|
SymValue sv1 = merge.Graph1.LookupWithoutManifesting (this.from, this.function);
|
|
SymValue sv2 = merge.Graph2.LookupWithoutManifesting (this.from, this.function);
|
|
if (sv1 != null && sv2 != null)
|
|
return;
|
|
if (sv1 != null) {
|
|
if (DebugOptions.Debug)
|
|
{
|
|
Console.WriteLine ("---SymGraph changed due to EliminateEdgeUpdate {0}-{1} " +
|
|
"-> that is only in G1", this.from, this.function);
|
|
}
|
|
merge.Changed = true;
|
|
}
|
|
|
|
bool noEdgeInResult = merge.Result.LookupWithoutManifesting (this.from, this.function) == null;
|
|
if (noEdgeInResult)
|
|
return;
|
|
|
|
merge.Result.Eliminate (this.function, this.from);
|
|
}
|
|
#endregion
|
|
}
|
|
}
|