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//
// CodeVisitor.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;
using System.IO;
using Mono.CodeContracts.Static.Analysis;
using Mono.CodeContracts.Static.ControlFlow;
using Mono.CodeContracts.Static.DataFlowAnalysis;
using Mono.CodeContracts.Static.DataStructures;
using Mono.CodeContracts.Static.Providers;
namespace Mono.CodeContracts.Static.AST.Visitors {
class CodeVisitor<Variable, Expression, ContextData, EdgeData>
: ILVisitorBase<APC, Expression, Variable, bool, bool>,
IAnalysis<APC, bool, IILVisitor<APC, Expression, Variable, bool, bool>, EdgeData>
where ContextData : IMethodContextProvider {
private ICodeLayer<Expression, Variable, ContextData, EdgeData> codeLayer;
public ContextData Context
{
get { return this.codeLayer.ILDecoder.ContextProvider; }
}
protected IMetaDataProvider MetaDataProvider
{
get { return this.codeLayer.MetaDataProvider; }
}
public void Run (ICodeLayer<Expression, Variable, ContextData, EdgeData> codeLayer)
{
this.codeLayer = codeLayer;
codeLayer.CreateForward (this) (true);
}
#region Overrides of ILVisitorBase<APC,Expression,Variable,bool,bool>
public override bool DefaultVisit (APC pc, bool data)
{
return data;
}
#endregion
#region Implementation of IAnalysis<APC,bool,IILVisitor<APC,Expression,Variable,bool,bool>,EdgeData>
public IILVisitor<APC, Expression, Variable, bool, bool> GetVisitor ()
{
return this;
}
public virtual bool Join (Pair<APC, APC> edge, bool newstate, bool prevstate, out bool weaker, bool widen)
{
weaker = false;
return true;
}
public bool ImmutableVersion (bool arg)
{
return arg;
}
public bool MutableVersion (bool arg)
{
return arg;
}
public bool EdgeConversion (APC @from, APC to, bool isJoinPoint, EdgeData data, bool state)
{
return state;
}
public bool IsBottom (APC pc, bool state)
{
return !state;
}
public Predicate<APC> SaveFixPointInfo (IFixPointInfo<APC, bool> fixPointInfo)
{
return null;
}
public void Dump (Pair<bool, TextWriter> pair)
{
}
#endregion
}
}
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