private static bool IsFunctionName(string tok)
{
char begin = tok[0];
bool isIdentifier = char.IsLetter(begin) || begin.CompareTo('$') == 0 || begin.CompareTo('_') == 0 || '"' == begin;
return(isIdentifier && !Formatter.Logical.Contains(tok) && !EndClauses.Contains(tok) && !Quantifiers.Contains(tok) &&
!Dml.Contains(tok) && !Formatter.Misc.Contains(tok));
}
public string Perform()
{
_result.Append(Initial);
while (_tokens.MoveNext())
{
_token = _tokens.Current;
_lcToken = _token.ToLowerInvariant();
if ("'".Equals(_token))
{
ExtractStringEnclosedBy("'");
}
else if ("\"".Equals(_token))
{
ExtractStringEnclosedBy("\"");
}
if (IsMultiQueryDelimiter(_token))
{
StartingNewQuery();
}
else if (_afterByOrSetOrFromOrSelect && ",".Equals(_token))
{
CommaAfterByOrFromOrSelect();
}
else if (_afterOn && ",".Equals(_token))
{
CommaAfterOn();
}
else if ("(".Equals(_token))
{
OpenParen();
}
else if (")".Equals(_token))
{
CloseParen();
}
else if (BeginClauses.Contains(_lcToken))
{
BeginNewClause();
}
else if (EndClauses.Contains(_lcToken))
{
EndNewClause();
}
else if ("select".Equals(_lcToken))
{
Select();
}
else if (Dml.Contains(_lcToken))
{
UpdateOrInsertOrDelete();
}
else if ("values".Equals(_lcToken))
{
Values();
}
else if ("on".Equals(_lcToken))
{
On();
}
else if (_afterBetween && _lcToken.Equals("and"))
{
Misc();
_afterBetween = false;
}
else if (Formatter.Logical.Contains(_lcToken))
{
Logical();
}
else if (IsWhitespace(_token))
{
White();
}
else
{
Misc();
}
if (!IsWhitespace(_token))
{
_lastToken = _lcToken;
}
}
return(_result.ToString());
}
