public function process($tokenList)
{
$base_expr = "";
$resultList = array();
$tablePair = array();
foreach ($tokenList as $k => $v) {
$token = new ExpressionToken($k, $v);
if ($token->isWhitespaceToken()) {
continue;
}
switch ($token->getUpper()) {
case 'TO':
// separate source table from destination
$tablePair['source'] = array('expr_type' => ExpressionType::TABLE, 'table' => trim($base_expr), 'no_quotes' => $this->revokeQuotation($base_expr), 'base_expr' => $base_expr);
$base_expr = "";
break;
case ',':
// split rename operations
$tablePair['destination'] = array('expr_type' => ExpressionType::TABLE, 'table' => trim($base_expr), 'no_quotes' => $this->revokeQuotation($base_expr), 'base_expr' => $base_expr);
$resultList[] = $tablePair;
$tablePair = array();
$base_expr = "";
break;
case 'TABLE':
$objectType = ExpressionType::TABLE;
$resultList[] = array('expr_type' => ExpressionType::RESERVED, 'base_expr' => $token->getTrim());
continue 2;
default:
$base_expr .= $token->getToken();
break;
}
}
if ($base_expr !== "") {
$tablePair['destination'] = array('expr_type' => ExpressionType::TABLE, 'table' => trim($base_expr), 'no_quotes' => $this->revokeQuotation($base_expr), 'base_expr' => $base_expr);
$resultList[] = $tablePair;
}
return array('expr_type' => $objectType, 'sub_tree' => $resultList);
}
