public static MatchContext CreateWithInputParamsAndVars(MatchContext context)
{
return(CreateWithInputParams(context, context.Vars));
}
public static MatchContext MatchSubset <T>(this IEnumerable <PatternUst> collection1, IEnumerable <T> collection2, MatchContext context)
where T : Ust
{
var sublistToMatch = new List <PatternUst>(collection1 ?? Enumerable.Empty <PatternUst>());
var list = collection2 as IList <T> ?? new List <T>(collection2 ?? Enumerable.Empty <T>());
if (sublistToMatch.Count == 0)
{
return(context.MakeSuccess());
}
var matches = new List <Ust>(list.Count);
foreach (T element in list)
{
MatchContext newContext = MatchContext.CreateWithInputParams(context);
int i = 0;
while (i < sublistToMatch.Count)
{
newContext = sublistToMatch[i].MatchUst(element, newContext);
if (newContext.Success)
{
matches.Add(element);
sublistToMatch.RemoveAt(i);
break;
}
else
{
i++;
}
}
if (!sublistToMatch.Any())
{
break;
}
}
if (sublistToMatch.Any())
{
return(context.Fail());
}
foreach (Ust match in matches)
{
context = context.AddMatch(match);
}
return(context);
}