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//
// VisitorForVariablesIn.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;
using System.Collections.Generic;
using Mono.CodeContracts.Static.AST;
using Mono.CodeContracts.Static.AST.Visitors;
using Mono.CodeContracts.Static.DataStructures;
namespace Mono.CodeContracts.Static.Analysis.ExpressionAnalysis.Decoding {
class VisitorForVariablesIn<V, E> : ISymbolicExpressionVisitor<E, E, V, ISet<E>, Dummy>
where V : IEquatable<V>
where E : IEquatable<E> {
private readonly IExpressionContextProvider<E, V> contextProvider;
public VisitorForVariablesIn (IExpressionContextProvider<E, V> contextProvider)
{
this.contextProvider = contextProvider;
}
public static void AddFreeVariables (E expr, ISet<E> set, FullExpressionDecoder<V, E> decoder)
{
decoder.VariablesInVisitor.Recurse (expr, set);
}
private void Recurse (E expr, ISet<E> set)
{
this.contextProvider.ExpressionContext.Decode<ISet<E>, Dummy, VisitorForVariablesIn<V, E>> (expr, this, set);
}
#region Implementation of IExpressionILVisitor<E,E,V,ISet<E>,Dummy>
public Dummy Binary (E pc, BinaryOperator op, V dest, E operand1, E operand2, ISet<E> data)
{
Recurse (operand1, data);
Recurse (operand2, data);
return Dummy.Value;
}
public Dummy Isinst (E pc, TypeNode type, V dest, E obj, ISet<E> data)
{
data.Add (pc);
return Dummy.Value;
}
public Dummy LoadNull (E pc, V dest, ISet<E> polarity)
{
return Dummy.Value;
}
public Dummy LoadConst (E pc, TypeNode type, object constant, V dest, ISet<E> data)
{
return Dummy.Value;
}
public Dummy Sizeof (E pc, TypeNode type, V dest, ISet<E> data)
{
data.Add (pc);
return Dummy.Value;
}
public Dummy Unary (E pc, UnaryOperator op, bool unsigned, V dest, E source, ISet<E> data)
{
Recurse (source, data);
return Dummy.Value;
}
#endregion
#region Implementation of ISymbolicExpressionVisitor<E,E,V,ISet<E>,Dummy>
public Dummy SymbolicConstant (E pc, V variable, ISet<E> data)
{
return Dummy.Value;
}
#endregion
}
}
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