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 (args.IsRoot)
{
Scanner scanner = args.Scanner;
int pos = scanner.Position;
args.Push();
int 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++)
{
Parser 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));
}
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)
{
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;
var pos = scanner.Position;
int length = 0;
int ch;
ch = scanner.ReadChar();
length++;
if (ch == '<')
{
ch = scanner.ReadChar();
length++;
if (ch == '!')
{
length = 7;
// read comment
if (scanner.ReadString("--", true))
{
while (!scanner.ReadString("-->", true))
{
if (scanner.ReadChar() == -1)
{
scanner.Position = pos;
return(-1);
}
length++;
}
return(length);
}
scanner.Position = pos;
return(-1);
}
tagNameBuilder.Clear();
var first = true;
while (ch != -1 && char.IsLetter((char)ch))
{
if (first && !char.IsLetter((char)ch))
{
scanner.Position = pos;
return(-1);
}
first = false;
tagNameBuilder.Append((char)ch);
ch = scanner.ReadChar();
length++;
}
if (ch == ' ' || ch == '>' || ch == '/')
{
var isVoid = voidTags.Contains(tagNameBuilder.ToString());
int prev = ch;
while (ch != '>' && ch != -1)
{
prev = ch;
if (ch == '\'' || ch == '"')
{
var quote = ch;
ch = scanner.ReadChar();
length++;
while (ch != quote && ch != -1)
{
if (ch == '\n')
{
scanner.Position = pos;
return(-1);
}
ch = scanner.ReadChar();
length++;
}
}
ch = scanner.ReadChar();
length++;
}
if (ch != '>')
{
scanner.Position = pos;
return(-1);
}
if (isVoid || prev == '/') // self closing, or a tag with no content
{
return(length);
}
// now, read till the end tag
if (MatchContent && Name != null)
{
args.Push();
}
var start = pos + length;
var contentLength = 0;
tagNameBuilder.Insert(0, "</");
tagNameBuilder.Append(">");
var tagName = tagNameBuilder.ToString();
while (!scanner.ReadString(tagName, true))
{
ch = scanner.Peek();
if (ch == '<')
{
if (MatchContent && contentLength > 0)
{
args.AddMatch(this, start, contentLength, "content");
}
var inner = Parse(args);
if (inner < 0)
{
scanner.Position = pos;
return(-1);
}
length += inner;
start = pos + length;
contentLength = 0;
continue;
}
if (scanner.Advance(1) >= 0)
{
length++;
contentLength++;
}
else
{
scanner.Position = pos;
return(-1);
}
}
length += tagName.Length;
if (MatchContent)
{
if (contentLength > 0)
{
args.AddMatch(this, start, contentLength, "content");
}
if (Name != null)
{
args.PopMatch(this, pos, length);
}
}
return(length);
}
}
scanner.Position = pos;
return(-1);
}
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)
{
var scanner = args.Scanner;
var pos = scanner.Position;
int length = 0;
int ch;
ch = scanner.ReadChar();
length++;
if (ch == '<')
{
ch = scanner.ReadChar();
length++;
if (ch == '!')
{
length = 7;
// read comment
if (scanner.ReadString("--", true))
{
while (!scanner.ReadString("-->", true))
{
if (scanner.ReadChar() == -1)
{
scanner.Position = pos;
return -1;
}
length++;
}
return length;
}
scanner.Position = pos;
return -1;
}
tagNameBuilder.Clear();
var first = true;
while (ch != -1 && char.IsLetter((char)ch))
{
if (first && !char.IsLetter((char)ch))
{
scanner.Position = pos;
return -1;
}
first = false;
tagNameBuilder.Append((char)ch);
ch = scanner.ReadChar();
length++;
}
if (ch == ' ' || ch == '>' || ch == '/')
{
var isVoid = voidTags.Contains(tagNameBuilder.ToString());
int prev = ch;
while (ch != '>' && ch != -1)
{
prev = ch;
if (ch == '\'' || ch == '"')
{
var quote = ch;
ch = scanner.ReadChar();
length++;
while (ch != quote && ch != -1)
{
if (ch == '\n')
{
scanner.Position = pos;
return -1;
}
ch = scanner.ReadChar();
length++;
}
}
ch = scanner.ReadChar();
length++;
}
if (ch != '>')
{
scanner.Position = pos;
return -1;
}
if (isVoid || prev == '/') // self closing, or a tag with no content
{
return length;
}
// now, read till the end tag
if (MatchContent && Name != null)
args.Push();
var start = pos + length;
var contentLength = 0;
tagNameBuilder.Insert(0, "</");
tagNameBuilder.Append(">");
var tagName = tagNameBuilder.ToString();
while (!scanner.ReadString(tagName, true))
{
ch = scanner.Peek();
if (ch == '<')
{
if (MatchContent && contentLength > 0)
{
args.AddMatch(this, start, contentLength, "content");
}
var inner = Parse(args);
if (inner < 0)
{
scanner.Position = pos;
return -1;
}
length += inner;
start = pos + length;
contentLength = 0;
continue;
}
if (scanner.Advance(1) >= 0)
{
length++;
contentLength++;
}
else
{
scanner.Position = pos;
return -1;
}
}
length += tagName.Length;
if (MatchContent)
{
if (contentLength > 0)
{
args.AddMatch(this, start, contentLength, "content");
}
if (Name != null)
args.PopMatch(this, pos, length);
}
return length;
}
}
scanner.Position = pos;
return -1;
}