internal Arg(string text)
{
this.text = text;
this.type = ArgType.text;
this.scope = Regex.Scope.invalid;
this.stringInt = null;
}
public Arg(Regex.Scope scope, int resultNumber)
{
this.type = ArgType.regex;
this.text = null;
this.scope = scope;
this.resultNumber = resultNumber;
this.stringInt = null;
}
internal void Append(Match match, Regex.Scope scope)
{
if (!results.ContainsKey(scope))
{
results.Add(scope, new List <Match>(1));
}
results[scope].Add(match);
}
internal Match Get(Regex.Scope scope, int resultNumber)
{
var matches = results[scope];
if (matches.Count <= resultNumber)
{
return(null);
}
return(matches[resultNumber]);
}
internal static Arg Create(string text)
{
Rule.Regex.Scope scope = Regex.Scope.invalid;
// eh, simple if'ology would be sufficient
if (text.StartsWith("$s"))
{
scope = Regex.Scope.subject;
}
else if (text.StartsWith("$b"))
{
scope = Regex.Scope.body;
}
else if (text.StartsWith("$t"))
{
scope = Regex.Scope.to;
}
else if (text.StartsWith("$f"))
{
scope = Regex.Scope.from;
}
else if (text.StartsWith("$c"))
{
scope = Regex.Scope.cc;
}
else
{
return(new Arg(text));
}
var separator = text.IndexOf('.');
int resultNumber;
StringInt stringInt = null;
if (separator < 0)
{
// $cN - Nth match, implicit 0th group
if (!int.TryParse(text.Substring(2, text.Length - 2), out resultNumber))
{
return(null);
}
return(new Arg(scope, resultNumber));
}
else if (separator <= 2)
{
// $c. .. just nope
return(null);
}
else
{
if (!int.TryParse(text.Substring(2, separator - 2), out resultNumber))
{
return(null);
}
int group;
string group_sub = text.Substring(separator + 1, text.Length - separator - 1);
if (!int.TryParse(group_sub, out group))
{
// $cN.groupname
stringInt = new StringInt(group_sub);
}
else
{
// $cN.M - Nth match Mth group
stringInt = new StringInt(group);
}
return(new Arg(scope, resultNumber, stringInt));
}
}
