Function my_xpath_parse_FunctionCall

sql/item_xmlfunc.cc:1868–1904

Scan Function Call SYNOPSYS [16] FunctionCall ::= FunctionName '(' ( Argument ( ',' Argument )* )? ')' [17] Argument ::= Expr (RECURSIVE) [14] Expr ::= OrExpr reduced to: [16b] FunctionCall ::= FunctionName '(' ( OrExpr ( ',' OrExpr )* )? ')' (RECURSIVE) RETURN 1 - success 0 - failure */

*/
static int my_xpath_parse_FunctionCall(MY_XPATH *xpath)
{
  Item *args[256];
  uint nargs;

  if (!my_xpath_parse_term(xpath, MY_XPATH_LEX_FUNC))
    return 0;

  MY_XPATH_FUNC *func= xpath->func;

  if (!my_xpath_parse_term(xpath, MY_XPATH_LEX_LP))
    return 0;

  for (nargs= 0 ; nargs < func->maxargs; )
  {
    if (!my_xpath_parse_Expr(xpath))
    {
      if (nargs < func->minargs)
        return 0;
      goto right_paren;
    }
    args[nargs++]= xpath->item;
    if (!my_xpath_parse_term(xpath, MY_XPATH_LEX_COMMA))
    {
      if (nargs < func->minargs)
        return 0;
      else
        break;
    }
  }

right_paren:
  if (!my_xpath_parse_term(xpath, MY_XPATH_LEX_RP))
    return 0;

  return ((xpath->item= func->create(xpath, args, nargs))) ? 1 : 0;
}


/*