static Match TryMatchFilter(
syn.TokenKind kind,
string src, int index,
System.Func <char, bool> filterPrefix,
System.Func <char, bool> filterRest)
{
if (!filterPrefix(src[index]))
{
return(null);
}
var length = 1;
while (index + length < src.Length && filterRest(src[index + length]))
{
length++;
}
return(new Match(src.Substring(index, length), kind));
}
public Match(string excerpt, syn.TokenKind kind)
{
this.excerpt = excerpt;
this.kind = kind;
}