protected SymbolPosition SkipKeyword(string keyword, bool mandatory)
{
if (Current != TokenType.IdentOrKeyword && CurrentData.ToUpper() != keyword.ToUpper())
{
if (!mandatory)
{
return(null);
}
throw CreateParseError("DAE-00253 " + keyword + " expected");
}
SymbolPosition res = CurrentOriginal;
NextToken();
return(res);
}
private SymbolPosition[] TestOperator(OperatorDef op)
{
int steps = 0;
List <SymbolPosition> res = new List <SymbolPosition>();
while (steps < op.Tokens.Length && op.AcceptTokenType(Current) && CurrentData.ToUpper() == op.Tokens[steps].ToUpper())
{
res.Add(CurrentOriginal);
steps++;
NextToken();
}
if (op.Tokens.Length == steps)
{
return(res.ToArray());
}
GoBack(steps);
return(null);
}
protected void ParseIdentOrKeyword(string prefix, TokenType token, bool testReserved)
{
StringBuilder sb = new StringBuilder(prefix);
while (Char.IsLetterOrDigit(CurrentCh) || CurrentCh == '_')
{
sb.Append(CurrentCh);
GoToNextChar();
}
CurrentData = sb.ToString();
if (testReserved && m_reservedWords.Contains(CurrentData.ToUpper()))
{
Current = TokenType.Reserved;
}
else
{
Current = token;
}
}
protected bool IsKeyword(string keyword)
{
return((Current == TokenType.IdentOrKeyword || Current == TokenType.Reserved) &&
CurrentData.ToUpper() == keyword.ToUpper());
}