public SimplifyLikeOpLineariser(SimplifyLikeExprLineariser ExprLineariser, TextWriter wr)
{
Contract.Requires(wr != null);
Contract.Requires(ExprLineariser != null);
this.ExprLineariser = ExprLineariser;
this.wr = wr;
}
public static string ToString(VCExpr /*!*/ e, LineariserOptions /*!*/ options, UniqueNamer /*!*/ namer)
{
Contract.Requires(e != null);
Contract.Requires(options != null);
Contract.Requires(namer != null);
Contract.Ensures(Contract.Result <string>() != null);
StringWriter sw = new StringWriter();
SimplifyLikeExprLineariser lin = new SimplifyLikeExprLineariser(sw, namer);
lin.Linearise(e, options);
return(sw.ToString());
}
public bool VisitBoogieFunctionOp(VCExprNAry node, LineariserOptions options)
{
//Contract.Requires(options != null);
//Contract.Requires(node != null);
VCExprBoogieFunctionOp op = (VCExprBoogieFunctionOp)node.Op;
Contract.Assert(op != null);
string funcName = op.Func.Name;
Contract.Assert(funcName != null);
string bvzName = op.Func.FindStringAttribute("external");
string printedName = ExprLineariser.Namer.GetName(op.Func, funcName);
Contract.Assert(printedName != null);
if (bvzName != null)
{
printedName = bvzName;
}
if (options.UseTypes)
{
// we use term notation for arguments whose type is not bool, and
// formula notation for boolean arguments
wr.Write("(");
ExprLineariser.WriteId(printedName);
foreach (VCExpr e in node)
{
Contract.Assert(e != null);
wr.Write(" ");
ExprLineariser.Linearise(e, options.SetAsTerm(!e.Type.IsBool));
}
wr.Write(")");
}
else
{
// arguments are always terms
WriteApplicationTermOnly(SimplifyLikeExprLineariser.MakeIdPrintable(printedName),
node, options);
}
return(true);
}
