protected override int InnerParse(ParseArgs args)
{
var scanner = args.Scanner;
int count = 0;
var pos = scanner.Position;
int length = 0;
while (count < Maximum)
{
int curPos = scanner.Position;
int stopMatch;
if (skipMatches)
{
args.Push();
stopMatch = Inner.Parse(args);
args.PopFailed();
}
else
{
stopMatch = Inner.Parse(args);
}
if (stopMatch >= 0)
{
if (Capture)
length += stopMatch;
else if (!Skip)
scanner.Position = curPos;
break;
}
var ofs = scanner.Advance(1);
if (ofs >= 0)
{
length++;
count++;
}
else
{
scanner.Position = curPos;
break;
}
}
if (count < Minimum)
{
scanner.Position = pos;
return -1;
}
return length;
}
protected override int InnerParse(ParseArgs args)
{
var count = Items.Count;
if (HasNamedChildren)
{
args.Push();
for (int i = 0; i < count; i++)
{
var parser = Items[i];
if (parser != null)
{
var match = parser.Parse(args);
if (match < 0)
{
args.ClearMatches();
}
else
{
args.PopSuccess();
return match;
}
}
else
{
args.PopFailed();
return 0;
}
}
args.PopFailed();
}
else
{
for (int i = 0; i < count; i++)
{
var parser = Items[i];
if (parser != null)
{
var match = parser.Parse(args);
if (match >= 0)
return match;
}
else
{
return 0;
}
}
}
return -1;
}
protected override int InnerParse(ParseArgs args)
{
if (!HasNamedChildren)
{
var match = Inner.Parse(args);
return match < 0 ? 0 : match;
}
else
{
args.Push();
var match = Inner.Parse(args);
if (match >= 0)
{
args.PopSuccess();
return match;
}
args.PopFailed();
return 0;
}
}
protected override int InnerParse(ParseArgs args)
{
var scanner = args.Scanner;
int count = 0;
var pos = scanner.Position;
int length = 0;
// retrieve up to the maximum number
var sepMatch = 0;
if (Inner != null)
{
while (count < Maximum)
{
int curPos = scanner.Position;
if (Until != null && count >= Minimum)
{
int stopMatch;
if (skipUntilMatches)
{
args.Push();
stopMatch = Until.Parse(args);
args.PopFailed();
}
else
{
stopMatch = Until.Parse(args);
}
if (stopMatch >= 0)
{
if (CaptureUntil)
length += stopMatch;
else if (!SkipUntil)
scanner.Position = curPos;
return length;
}
}
if (separator != null && count > 0)
{
sepMatch = separator.Parse(args);
if (sepMatch < 0)
break;
}
var childMatch = Inner.Parse(args);
if (childMatch > 0)
{
length += childMatch + sepMatch;
count++;
}
else
{
if (sepMatch > 0)
scanner.Position = curPos;
break;
}
}
}
else
{
while (count < Maximum)
{
int curPos = scanner.Position;
if (Until != null && count >= Minimum)
{
int stopMatch;
if (skipUntilMatches)
{
args.Push();
stopMatch = Until.Parse(args);
args.PopFailed();
}
else
{
stopMatch = Until.Parse(args);
}
if (stopMatch >= 0)
{
if (CaptureUntil)
length += stopMatch;
else if (!SkipUntil)
scanner.Position = curPos;
return length;
}
}
if (separator != null && count > 0)
{
sepMatch = separator.Parse(args);
if (sepMatch < 0)
break;
}
var ofs = scanner.Advance(1);
if (ofs >= 0)
{
length += sepMatch;
length++;
count++;
}
else
{
if (sepMatch > 0)
scanner.Position = curPos;
break;
}
}
}
if (count < Minimum)
{
scanner.Position = pos;
return -1;
}
return length;
}
protected override int InnerParse(ParseArgs args)
{
if (args.IsRoot)
{
var scanner = args.Scanner;
var pos = scanner.Position;
args.Push();
var match = Inner.Parse(args);
MatchCollection matches = null;
if (match >= 0 && !AllowPartialMatch && !scanner.IsEof)
{
args.PopFailed();
scanner.Position = pos;
match = -1;
}
else
{
matches = args.Pop();
}
IEnumerable<Parser> errors = null;
if (args.Errors != null)
{
var errorList = new List<Parser>(args.Errors.Count);
for (int i = 0; i < args.Errors.Count; i++)
{
var error = args.Errors[i];
if (!errorList.Contains(error))
errorList.Add(error);
}
errors = errorList;
}
args.Root = new GrammarMatch(this, scanner, pos, match, matches, args.ErrorIndex, args.ChildErrorIndex, errors);
return match;
}
return base.InnerParse(args);
}