protected virtual void OnTokenMatch(Token token)
{
if (this.TokenMatch != null)
{
this.TokenMatch(this, token);
}
}
public AnchorTag(Match match, Token parentToken)
: base(match)
{
this.parentToken = parentToken;
}
public virtual void Place(StringBuilder sb, Token token)
{
int offset = 0;
if (this.Pseudo == null || this.Pseudo.Length == 0)
{
this.HandleMatch(this.Regex.Match(sb.ToString()), token, sb, 0, 0, ref offset);
}
else
{
MatchCollection matches = this.Regex.Matches(sb.ToString());
int count = matches.Count;
for (int i = 0; i < count; i++)
{
if (this.HandleMatch(matches[i], token, sb, i, count, ref offset))
{
break;
}
}
}
}
protected virtual bool HandleMatch(Match match, Token token, StringBuilder sb, int index, int count, ref int offset)
{
Group group;
if (this.GroupName != null && this.GroupName.Length > 0)
{
group = match.Groups[this.GroupName];
}
else
{
group = match.Groups[this.GroupIndex];
}
PseudoMatch pseudoMatch = this.IsPseudoMatch(group, token, index, count);
if (!pseudoMatch.Match)
{
return pseudoMatch.CancelSearch;
}
int pos;
switch (this.Position)
{
case SelectorPosition.After:
pos = group.Index + group.Length;
break;
case SelectorPosition.Before:
pos = group.Index;
break;
case SelectorPosition.Replace:
pos = group.Index;
sb.Remove(pos+offset, group.Length);
break;
default:
throw new IndexOutOfRangeException();
}
sb.Insert(pos+offset, token.Output);
if (this.Position == SelectorPosition.Replace)
{
offset -= group.Length;
}
offset += token.Output != null ? token.Output.Length : 0;
return pseudoMatch.CancelSearch;
}
public virtual List<string> Matches(string text, Token token)
{
List<string> list = new List<string>();
MatchCollection matches = this.Regex.Matches(text);
int count = matches.Count;
for (int i = 0; i < count; i++)
{
Group group;
if (this.GroupName != null && this.GroupName.Length > 0)
{
group = matches[i].Groups[this.GroupName];
}
else
{
group = matches[i].Groups[this.GroupIndex];
}
if (this.Pseudo == null || this.Pseudo.Length == 0)
{
list.Add(group.Value);
break;
}
PseudoMatch pseudoMatch = this.IsPseudoMatch(group, token, i, count);
if (pseudoMatch.Match)
{
list.Add(group.Value);
}
if (pseudoMatch.CancelSearch)
{
break;
}
}
return list;
}
protected virtual PseudoMatch IsPseudoMatch(Group group, Token token, int index, int count)
{
if (this.Pseudo == null || this.Pseudo.Length == 0)
{
return new PseudoMatch(true, true);
}
switch (this.Pseudo)
{
case "all":
return new PseudoMatch(true, false);
case "first":
return new PseudoMatch(index == 0, index == 0);
case "last":
return new PseudoMatch(index == (count - 1), index == (count - 1));
case "odd":
return new PseudoMatch((index & 1) != 0, false);
case "even":
return new PseudoMatch((index & 1) == 0, false);
case "nth":
int nth = int.Parse(this.PseudoArg);
return new PseudoMatch(((index + 1) % nth == 0), false);
case "eq":
int eq = int.Parse(this.PseudoArg);
return new PseudoMatch(index == eq, index == eq);
case "gt":
int gt = int.Parse(this.PseudoArg);
return new PseudoMatch(index > gt, false);
case "lt":
int lt = int.Parse(this.PseudoArg);
return new PseudoMatch(index < lt, index >= lt);
}
return new PseudoMatch(false, true);
}
public TokenNotUniqueException(Token token)
{
this.token = token;
}