91 lines
3.7 KiB
C#
91 lines
3.7 KiB
C#
//
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// ValueDecoder.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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using System;
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using System.IO;
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using Mono.CodeContracts.Static.AST.Visitors;
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using Mono.CodeContracts.Static.ControlFlow;
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using Mono.CodeContracts.Static.DataStructures;
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using Mono.CodeContracts.Static.Providers;
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namespace Mono.CodeContracts.Static.Analysis.HeapAnalysis {
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class ValueDecoder<TContext> :
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IILDecoder<APC, SymbolicValue, SymbolicValue, IValueContextProvider<SymbolicValue>, IImmutableMap<SymbolicValue, Sequence<SymbolicValue>>>
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where TContext : IStackContextProvider
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{
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private readonly HeapAnalysis parent;
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private readonly IILDecoder<APC, int, int, TContext, Dummy> stack_decoder;
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private readonly Lazy<IValueContextProvider<SymbolicValue>> context;
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public ValueDecoder(HeapAnalysis parent, IILDecoder<APC, int, int, TContext, Dummy> stackDecoder)
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{
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this.context = new Lazy<IValueContextProvider<SymbolicValue>> (()=> new ValueContextProvider<TContext>(this.parent, this.stack_decoder.ContextProvider));
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this.parent = parent;
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this.stack_decoder = stackDecoder;
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}
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#region Implementation of IILDecoder<APC,SymbolicValue,SymbolicValue,IValueContext<SymbolicValue>,IImmutableMap<SymbolicValue,Sequence<SymbolicValue>>>
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public IValueContextProvider<SymbolicValue> ContextProvider { get { return context.Value; } }
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public Result ForwardDecode<Data, Result, Visitor>(APC pc, Visitor visitor, Data state)
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where Visitor : IILVisitor<APC, SymbolicValue, SymbolicValue, Data, Result>
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{
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return this.stack_decoder.ForwardDecode<Data, Result, StackToSymbolicAdapter<Data, Result, Visitor>>
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(pc, new StackToSymbolicAdapter<Data, Result, Visitor> (this.parent, visitor), state);
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}
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public bool IsUnreachable(APC pc)
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{
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return this.parent.IsUnreachable (pc);
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}
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public IImmutableMap<SymbolicValue, Sequence<SymbolicValue>> EdgeData(APC from, APC to)
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{
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if (!this.parent.RenamePoints.ContainsKey(from, to))
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return null;
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if (this.parent.MergeInfoCache.ContainsKey(to) && this.parent.MergeInfoCache[to] == null)
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return null;
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return this.parent.EdgeRenaming (new Pair<APC, APC> (from, to), this.ContextProvider.MethodContext.CFG.IsJoinPoint (to));
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}
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public void Dump(TextWriter tw, string prefix, IImmutableMap<SymValue, Sequence<SymValue>> edgeData )
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{
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if (edgeData == null)
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return;
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edgeData.Visit ((key, targets) => {
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tw.Write (" {0} -> ", key);
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foreach (var target in targets.AsEnumerable ())
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tw.Write ("{0} ", target);
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tw.WriteLine ();
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return VisitStatus.ContinueVisit;
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});
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}
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#endregion
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}
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} |