public Token GetNextToken()
{
while (_currentSymbol.Character.IsWhiteSpace())
{
_currentSymbol = _inputString.GetNextSymbol();
}
_commentState.ConsumeComments(ref _currentSymbol, _inputString);
if (_currentSymbol.Character.IsEof())
{
return new Token {
Type = TokenType.Eof, Column = _currentSymbol.Column, Line = _currentSymbol.Line
}
}
;
if (_currentSymbol.Character.Equals('@'))
{
return(_verbatinState.GetToken(ref _currentSymbol, _inputString));
}
if (_currentSymbol.Character.IsLetterOrUnderscore())
{
return(_idState.GetId(ref _currentSymbol, _inputString));
}
if (_currentSymbol.Character.IsLetterOrDigitOrUnderscore())
{
return(_digitState.GetDigit(ref _currentSymbol, _inputString));
}
if (_currentSymbol.Character.IsSingleQuotes())
{
return(_charState.GetChar(ref _currentSymbol, _inputString));
}
if (_currentSymbol.Character.IsDoubleQuotes())
{
return(_stringState.GetString(ref _currentSymbol, _inputString));
}
if (_symbolState.IsValid(_currentSymbol.Character.ToString()))
{
return(_symbolState.GetSymbol(ref _currentSymbol, _inputString));
}
throw new LexicalException("Cannot resolve symbol " + _currentSymbol.Character + " Line: " + _currentSymbol.Line + " Column: " + _currentSymbol.Column);
}
}
