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//
// ExpressionPrinterFactory.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.Text;
using Mono.CodeContracts.Static.AST;
using Mono.CodeContracts.Static.AST.Visitors;
using Mono.CodeContracts.Static.Analysis.Drivers;
using Mono.CodeContracts.Static.Analysis.HeapAnalysis;
using Mono.CodeContracts.Static.ControlFlow;
using Mono.CodeContracts.Static.DataStructures;
namespace Mono.CodeContracts.Static.Analysis.ExpressionAnalysis {
static class ExpressionPrinterFactory {
public static Func<LabeledSymbol<APC, SymbolicValue>, string> Printer<SymbolicValue>
(IExpressionContextProvider<LabeledSymbol<APC, SymbolicValue>, SymbolicValue> contextProvider,
IMethodDriver<LabeledSymbol<APC, SymbolicValue>, SymbolicValue> methodDriver)
where SymbolicValue : IEquatable<SymbolicValue>
{
return new PrinterImpl<SymbolicValue> (contextProvider, methodDriver).PrintAt;
}
#region Nested type: PrinterImpl
private class PrinterImpl<SymbolicValue> :
ISymbolicExpressionVisitor<LabeledSymbol<APC, SymbolicValue>, LabeledSymbol<APC, SymbolicValue>, SymbolicValue, StringBuilder, Dummy>
where SymbolicValue : IEquatable<SymbolicValue> {
private readonly IExpressionContextProvider<LabeledSymbol<APC, SymbolicValue>, SymbolicValue> context_provider;
private readonly IMethodDriver<LabeledSymbol<APC, SymbolicValue>, SymbolicValue> method_driver;
public PrinterImpl (IExpressionContextProvider<LabeledSymbol<APC, SymbolicValue>, SymbolicValue> contextProvider,
IMethodDriver<LabeledSymbol<APC, SymbolicValue>, SymbolicValue> methodDriver)
{
this.context_provider = contextProvider;
this.method_driver = methodDriver;
}
public string PrintAt (LabeledSymbol<APC, SymbolicValue> expr)
{
var sb = new StringBuilder ();
Recurse (sb, expr);
return sb.ToString ();
}
private void Recurse (StringBuilder sb, LabeledSymbol<APC, SymbolicValue> expr)
{
if (expr.Symbol.Equals (default(SymbolicValue)))
sb.Append ("<!null!>");
else
this.context_provider.ExpressionContext.Decode<StringBuilder, Dummy, PrinterImpl<SymbolicValue>> (expr, this, sb);
}
#region Implementation of IExpressionILVisitor<ExternalExpression<APC,SymbolicValue>,ExternalExpression<APC,SymbolicValue>,SymbolicValue,StringBuilder,Dummy>
public Dummy Binary (LabeledSymbol<APC, SymbolicValue> pc, BinaryOperator op, SymbolicValue dest, LabeledSymbol<APC, SymbolicValue> operand1, LabeledSymbol<APC, SymbolicValue> operand2,
StringBuilder data)
{
data.Append ('(');
Recurse (data, operand1);
data.AppendFormat (" {0} ", op);
Recurse (data, operand2);
data.Append (')');
return Dummy.Value;
}
public Dummy Isinst (LabeledSymbol<APC, SymbolicValue> pc, TypeNode type, SymbolicValue dest, LabeledSymbol<APC, SymbolicValue> obj, StringBuilder data)
{
data.AppendFormat ("IsInst({0}) ", this.method_driver.MetaDataProvider.FullName (type));
Recurse (data, obj);
return Dummy.Value;
}
public Dummy LoadNull (LabeledSymbol<APC, SymbolicValue> pc, SymbolicValue dest, StringBuilder polarity)
{
polarity.Append ("NULL");
return Dummy.Value;
}
public Dummy LoadConst (LabeledSymbol<APC, SymbolicValue> pc, TypeNode type, object constant, SymbolicValue dest, StringBuilder data)
{
data.Append (constant.ToString ());
return Dummy.Value;
}
public Dummy Sizeof (LabeledSymbol<APC, SymbolicValue> pc, TypeNode type, SymbolicValue dest, StringBuilder data)
{
data.AppendFormat ("sizeof({0})", this.method_driver.MetaDataProvider.FullName (type));
return Dummy.Value;
}
public Dummy Unary (LabeledSymbol<APC, SymbolicValue> pc, UnaryOperator op, bool unsigned, SymbolicValue dest, LabeledSymbol<APC, SymbolicValue> source, StringBuilder data)
{
data.AppendFormat ("{0} ", op.ToString ());
Recurse (data, source);
return Dummy.Value;
}
#endregion
#region Implementation of ISymbolicExpressionVisitor<ExternalExpression<APC,SymbolicValue>,ExternalExpression<APC,SymbolicValue>,SymbolicValue,StringBuilder,Dummy>
public Dummy SymbolicConstant (LabeledSymbol<APC, SymbolicValue> pc, SymbolicValue variable, StringBuilder data)
{
data.Append (variable.ToString ());
return Dummy.Value;
}
#endregion
}
#endregion
}
}
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