public bool ReadNextToken(out LexerResult lexerResult)
{
int character = ReadNextChar();
if (character == -1)
{
lexerResult = new LexerResult(null, TokenType.EndOfStream);
return false;
}
if (IsSpaceChar(character))
{
while (IsSpaceChar(PeekNextChar()))
{
character = ReadNextChar();
}
lexerResult = new LexerResult(" ", TokenType.Space);
return true;
}
return AnalyzeChar(character, out lexerResult);
}
private bool AnalyzeChar(int character, out LexerResult lexerResult)
{
if (character == '{')
{
_inTemplate = true;
lexerResult = new LexerResult("{", TokenType.LeftBrace);
return true;
}
else if (character == '}')
{
_inTemplate = false;
lexerResult = new LexerResult("}", TokenType.RightBrace);
return true;
}
else if (character == '.')
{
lexerResult = new LexerResult(".", TokenType.Point);
return true;
}
else if (character == ':')
{
lexerResult = new LexerResult(":", TokenType.Colon);
return true;
}
else if (character == '\"')
{
lexerResult = new LexerResult("\"", TokenType.Quotes);
return true;
}
else if (_inTemplate && IsSpecialChar(character))
{
lexerResult = new LexerResult(((char)character).ToString(), TokenType.SpecialSymbol);
return true;
}
else if (IsPunctuationChar(character))
{
lexerResult = new LexerResult(((char)character).ToString(), TokenType.Punctuation);
return true;
}
else if (char.IsLetter((char)character))
{
lexerResult = new LexerResult(((char)character).ToString(), TokenType.Letter);
return true;
}
else if (char.IsDigit((char)character))
{
lexerResult = new LexerResult(((char)character).ToString(), TokenType.Digit);
return true;
}
lexerResult = null;
RaiseLexerException(character);
return false;
}