Parse the supplied expression. This is first a matter of tokenization, then a call to the root of the expression by the recursive _proctoks() (process tokens) function. After parsing the expression is ready for evaluation.

Declared and defined in file: hdbIndex.cpp

Function Logic:

Function body:

hzEcode _hz_sqle_expr::Parse (hzIntset& result)hzString& srchExp, 
{
   //  Parse the supplied expression. This is first a matter of tokenization, then a call to the root of the expression by the recursive _proctoks()
   //  (process tokens) function. After parsing the expression is ready for evaluation.
   //  
   //  Arguments: 1) result The result bitmap
   //     2) srchExp The search expression
   //  
   //  Returns: E_ARGUMENT If no expression was supplied
   //     E_FORMAT If no tokens were identified in the supplied expression
   //     E_OK  If no errors occured
   _hzfunc("_hz_sqle_expr::Parse") ;
   //  tokenize the expression
   if (!srchExp)
       return E_ARGUMENT ;
   TokenizeString(m_Tokens, *srchExp, TOK_MO_BOOL) ;
   if (m_Tokens.Count() == 0)
   {
       threadLog("No tokens found in expression\n") ;
       return E_FORMAT ;
   }
   threadLog("Parsing %d tokens\n", m_Tokens.Count()) ;
   m_pRoot = _proctoks() ;
   if (!m_pRoot)
       return E_FORMAT ;
   //  return Evaluate(result) ;
   return m_pRoot ? E_OK : E_FORMAT ;
}