protected override int InnerParse(ParseArgs args)
{
var scanner = args.Scanner;
var length = 0;
var pos = scanner.Position;
var ch = scanner.ReadChar();
for (int i = 0; i < _items.Count; i++)
{
var item = _items[i];
var count = 0;
while (ch != -1 && item.Test((char)ch))
{
length++;
count++;
ch = scanner.ReadChar();
if (count >= item.Maximum)
break;
}
if (count < item.Minimum)
{
scanner.Position = pos;
return -1;
}
}
scanner.Position = pos + length;
return length;
}
protected override int InnerParse(ParseArgs args)
{
var scanner = args.Scanner;
var len = 0;
int ch;
var pos = scanner.Position;
if (AllowSign)
{
ch = scanner.ReadChar();
if (ch == -1)
{
return -1;
}
if (ch == '-' || ch == '+')
{
len++;
ch = scanner.ReadChar();
}
}
else
ch = scanner.ReadChar();
bool foundNumber = false;
bool hasDecimal = false;
bool hasExponent = false;
do
{
if (char.IsDigit((char)ch))
{
foundNumber = true;
}
else if (AllowDecimal && !hasDecimal && ch == DecimalSeparator)
{
hasDecimal = true;
}
else if (hasExponent && (ch == '+' || ch == '-'))
{
}
else if (AllowExponent && !hasExponent && (ch == 'E' || ch == 'e'))
{
hasExponent = true;
hasDecimal = true; // no decimals after exponent
}
else if (!foundNumber)
{
scanner.Position = pos;
return -1;
}
else
break;
len++;
ch = scanner.ReadChar();
}
while (ch != -1);
scanner.Position = pos + len;
return len;
}
protected override int InnerParse(ParseArgs args)
{
var pos = args.Scanner.Position;
var match = Except.Parse(args);
if (match < 0)
return base.InnerParse(args);
args.Scanner.Position = pos;
return -1;
}
protected override int InnerParse(ParseArgs args)
{
var pos = args.Scanner.Position;
var length = 0;
var count = Items.Count;
if (separator != null)
{
var parser = Items[0];
var childMatch = parser.Parse(args);
if (childMatch < 0)
{
return childMatch;
}
length += childMatch;
for (int i = 1; i < count; i++)
{
var sepMatch = separator.Parse(args);
if (sepMatch >= 0)
{
parser = Items[i];
childMatch = parser.Parse(args);
if (childMatch > 0)
{
length += childMatch + sepMatch;
continue;
}
else if (childMatch == 0)
{
continue;
}
}
// failed
args.Scanner.Position = pos;
return -1;
}
return length;
}
for (int i = 0; i < count; i++)
{
var parser = Items[i];
var childMatch = parser.Parse(args);
if (childMatch >= 0)
{
length += childMatch;
continue;
}
args.Scanner.Position = pos;
return -1;
}
return length;
}
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 scanner = args.Scanner;
int ch = scanner.ReadChar();
if (ch != -1)
{
if (Test((char)ch) != Inverse)
{
return 1;
}
scanner.Position--;
}
return -1;
}
protected override int InnerParse(ParseArgs args)
{
int codePoint;
if (!args.Scanner.IsEof && TryGetCodePoint(args.Scanner, out codePoint))
{
if (Test(codePoint) != Inverse)
{
return 2;
}
}
return -1;
}
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)
{
if (TrueValues != null)
{
for (int i = 0; i < TrueValues.Length; i++)
{
var val = TrueValues[i];
if (args.Scanner.ReadString(val, caseSensitive))
return val.Length;
}
}
if (FalseValues != null)
{
for (int i = 0; i < FalseValues.Length; i++)
{
var val = FalseValues[i];
if (args.Scanner.ReadString(val, caseSensitive))
return val.Length;
}
}
return -1;
}
protected override int InnerParse(ParseArgs args)
{
var pos = args.Scanner.Advance(1);
return pos < 0 ? -1 : 1;
}
protected override int InnerParse(ParseArgs args)
{
if (Inner != null)
return Inner.Parse(args);
return 0;
}
protected override int InnerParse(ParseArgs args)
{
int length = 1;
var scanner = args.Scanner;
var pos = scanner.Position;
int ch;
if (AllowQuoted)
{
ch = scanner.ReadChar();
if (ch == -1)
return -1;
var quoteIndex = quoteCharString.IndexOf((char)ch);
if (quoteIndex >= 0)
{
char quote = endQuoteCharString[quoteIndex];
bool isEscape = false;
ch = scanner.ReadChar();
while (ch != -1)
{
length++;
if (AllowEscapeCharacters && ch == '\\')
isEscape = true;
else if (!isEscape)
{
if (ch == quote)
{
if (!AllowDoubleQuote || scanner.Peek() != quote)
return length;
isEscape = true;
}
}
else
isEscape = false;
ch = scanner.ReadChar();
}
}
length = 0;
scanner.Position = pos;
}
if (AllowNonQuoted && NonQuotedLetter != null)
{
var m = NonQuotedLetter.Parse(args);
while (m > 0)
{
length += m;
m = NonQuotedLetter.Parse(args);
}
if (length > 0)
return length;
}
return -1;
}
public GrammarMatch Match(Scanner scanner)
{
//scanner.ThrowIfNull("scanner");
var args = new ParseArgs(this, scanner);
if (!initialized)
Initialize();
Parse(args);
var root = args.Root;
if (root.Success && EnableMatchEvents)
{
root.TriggerPreMatch();
root.TriggerMatch();
}
return root;
}
protected override int InnerParse(ParseArgs args)
{
if (groupParser != null)
return groupParser.Parse(args);
return -1;
}
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);
}
protected override int InnerParse(ParseArgs args)
{
return !args.Scanner.ReadString(Value, caseSensitive) ? -1 : Value.Length;
}
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)
{
return 0;
}
