public Expression Extract(Expression extra)
{
Expression e;
if (extra != null)
{
var conjunctsPlusExtra = new List <Expression>(conjuncts);
conjunctsPlusExtra.Add(extra);
e = AH.CombineExpressionsWithAnd(conjunctsPlusExtra);
}
else
{
if (conjuncts.Count == 0)
{
return(null);
}
e = AH.CombineExpressionsWithAnd(conjuncts);
}
for (int i = variableNames.Count - 1; i >= 0; --i)
{
e = AH.MakeLet1Expr(variableNames[i], variableValues[i], e);
}
return(e);
}
public Expression Extract()
{
if (body == null)
{
Fail("Internal error: Attempt to extract before body is set");
}
if (!valid)
{
return(null);
}
var e = body;
for (int i = variableNames.Count - 1; i >= 0; --i)
{
e = AH.MakeLet1Expr(variableNames[i], variableValues[i], e);
}
return(e);
}