private T_Type GetTypeOfLexeme(string s)
{
T_Type type = null;
type = Keywords.FirstOrDefault(a => Regex.Match(s, a.Pattern).Success);
if (type != null)
{
return(type);
}
type = Operators.FirstOrDefault(a => Regex.Match(s, a.Pattern).Success);
if (type != null)
{
return(type);
}
type = PunctuationMarks.FirstOrDefault(a => Regex.Match(s, a.Pattern).Success);
if (type != null)
{
return(type);
}
type = Constants.FirstOrDefault(a => Regex.Match(s, a.Pattern).Success);
if (type != null)
{
return(type);
}
type = Identifiers.FirstOrDefault(a => Regex.Match(s, a.Pattern).Success);
if (type != null)
{
return(type);
}
return(null);
}
public Token ProcessState(InputStream pInput, Lexeme pLexeme)
{
pInput.CtrlNewToken = true;
if (char.IsLetter(pInput.CurrentSymbol) || pInput.CurrentSymbol == '_')
{
pLexeme.addSymbol(pInput.CurrentSymbol);
pInput.ConsumeSymbol();
return(new StateId().ProcessState(pInput, pLexeme));
}
else if (PunctuationMarks.Contains(pInput.CurrentSymbol))
{
var _token = PunctuationMarks.GetTokenType(pInput.CurrentSymbol);
pLexeme.addSymbol(pInput.CurrentSymbol);
pInput.ConsumeSymbol();
return(new Token {
Type = _token, LexemeVal = pLexeme.Value, Row = pInput.Row, Column = pInput.Column
});
}
else if (pInput.CurrentSymbol == '~')
{
pLexeme.addSymbol(pInput.CurrentSymbol);
pInput.ConsumeSymbol();
return(new Token
{
Type = TokenType.OpNotBit,
LexemeVal = pLexeme.Value,
Row = pInput.Row,
Column = pInput.Column
});
}
else if (pInput.CurrentSymbol == '?')
{
pLexeme.addSymbol(pInput.CurrentSymbol);
pInput.ConsumeSymbol();
return(new Token
{
Type = TokenType.OpTernary,
LexemeVal = pLexeme.Value,
Row = pInput.Row,
Column = pInput.Column
});
}
else if (pInput.CurrentSymbol == '^')
{
pLexeme.addSymbol(pInput.CurrentSymbol);
pInput.ConsumeSymbol();
return(new StateBitwiseXOr().ProcessState(pInput, pLexeme));
}
else if (char.IsDigit(pInput.CurrentSymbol))
{
pLexeme.addSymbol(pInput.CurrentSymbol);
pInput.ConsumeSymbol();
return(new StateDigit().ProcessState(pInput, pLexeme));
}
else if (pInput.CurrentSymbol == '=')
{
pLexeme.addSymbol(pInput.CurrentSymbol);
pInput.ConsumeSymbol();
return(new StateAssig().ProcessState(pInput, pLexeme));
}
else if (pInput.CurrentSymbol == '+')
{
pLexeme.addSymbol(pInput.CurrentSymbol);
pInput.ConsumeSymbol();
return(new StateSum().ProcessState(pInput, pLexeme));
}
else if (pInput.CurrentSymbol == '-')
{
pLexeme.addSymbol(pInput.CurrentSymbol);
pInput.ConsumeSymbol();
return(new StateSub().ProcessState(pInput, pLexeme));
}
else if (pInput.CurrentSymbol == '*')
{
pLexeme.addSymbol(pInput.CurrentSymbol);
pInput.ConsumeSymbol();
return(new StateMul().ProcessState(pInput, pLexeme));
}
else if (pInput.CurrentSymbol == '%')
{
pLexeme.addSymbol(pInput.CurrentSymbol);
pInput.ConsumeSymbol();
return(new StateMod().ProcessState(pInput, pLexeme));
}
else if (pInput.CurrentSymbol == '!')
{
pLexeme.addSymbol(pInput.CurrentSymbol);
pInput.ConsumeSymbol();
return(new StateNot().ProcessState(pInput, pLexeme));
}
else if (pInput.CurrentSymbol == '<')
{
pLexeme.addSymbol(pInput.CurrentSymbol);
pInput.ConsumeSymbol();
return(new StateLessThan().ProcessState(pInput, pLexeme));
}
else if (pInput.CurrentSymbol == '>')
{
pLexeme.addSymbol(pInput.CurrentSymbol);
pInput.ConsumeSymbol();
return(new StateGreaterThan().ProcessState(pInput, pLexeme));
}
else if (pInput.CurrentSymbol == '&')
{
pLexeme.addSymbol(pInput.CurrentSymbol);
pInput.ConsumeSymbol();
return(new StateAnd().ProcessState(pInput, pLexeme));
}
else if (pInput.CurrentSymbol == '|')
{
pLexeme.addSymbol(pInput.CurrentSymbol);
pInput.ConsumeSymbol();
return(new StateOr().ProcessState(pInput, pLexeme));
}
else if (pInput.CurrentSymbol == '/')
{
pLexeme.addSymbol(pInput.CurrentSymbol);
pInput.ConsumeSymbol();
return(new StateDiv().ProcessState(pInput, pLexeme));
}
else if (pInput.CurrentSymbol == '\'')
{
pInput.ConsumeSymbol();
return(new StateString1().ProcessState(pInput, pLexeme));
}
else if (pInput.CurrentSymbol == '\"')
{
pInput.ConsumeSymbol();
return(new StateString2().ProcessState(pInput, pLexeme));
}
else if (char.IsWhiteSpace(pInput.CurrentSymbol) || pInput.CurrentSymbol == '\n' ||
pInput.CurrentSymbol == '\r' || pInput.CurrentSymbol == '\t')
{
pInput.ConsumeSymbol();
return(new InitialState().ProcessState(pInput, pLexeme));
}
else if (pInput.CurrentSymbol == (char)0)
{
return(new Token {
Type = TokenType.Eof, LexemeVal = "", Row = pInput.Row, Column = pInput.Column
});
}
else
{
throw new LexerException("Symbol: " + pInput.CurrentSymbol + " not recognized");
}
}
