88 lines
2.8 KiB
C#
88 lines
2.8 KiB
C#
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//
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// AbstractDomainUpdate.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) 2011 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.HeapAnalysis.SymbolicGraph {
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class AbstractDomainUpdate<TFunc, TAbstractDomain> : Update<TFunc, TAbstractDomain>
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where TFunc : IEquatable<TFunc>, IConstantInfo
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where TAbstractDomain : IAbstractDomainForEGraph<TAbstractDomain>, IEquatable<TAbstractDomain> {
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private readonly SymValue sv;
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public AbstractDomainUpdate (SymValue sv)
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{
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this.sv = sv;
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}
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#region Overrides of Update
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public override void Replay (MergeInfo<TFunc, TAbstractDomain> merge)
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{
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if (!merge.IsCommon (this.sv))
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return;
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TAbstractDomain val1 = merge.Graph1 [this.sv];
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TAbstractDomain val2 = merge.Graph2 [this.sv];
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bool weaker;
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TAbstractDomain join = val1.Join (val2, merge.Widen, out weaker);
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TAbstractDomain wasInResult = merge.Result [this.sv];
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if (weaker) {
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if (DebugOptions.Debug)
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{
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Console.WriteLine ("----SymGraph changed during AbstractDomainUpdate of {3} " +
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"due to weaker abstractValue join (val1 = {0}, val2 = {1}, wasInResult = {2}",
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val1, val2, wasInResult, this.sv);
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}
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merge.Changed = true;
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}
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if (join.Equals (wasInResult))
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return;
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merge.Result [this.sv] = join;
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}
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public override void ReplayElimination (MergeInfo<TFunc, TAbstractDomain> merge)
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{
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if (!merge.IsCommon (this.sv))
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return;
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TAbstractDomain val1 = merge.Graph1 [this.sv];
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if (val1.IsTop)
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merge.Result [this.sv] = val1;
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else {
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TAbstractDomain val2 = merge.Graph2 [this.sv];
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if (val2.IsTop)
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merge.Result [this.sv] = val2;
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}
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}
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#endregion
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}
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}
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