/**
* Save declaration information to the node_function
*
* @param functionName name of the function
* @param arguments string containing arguments part of function
* declaration
*/
public static function set_declaration(&$node_schema, &$node_function, $arguments)
{
if (strlen(trim($arguments)) == 0) {
// no arguments to set for the function
} else {
$arguement_parts = explode(',', trim($arguments));
$args = array();
foreach ($arguement_parts as $part) {
$chunks = preg_split("/[\\s]+/", $part, -1, PREG_SPLIT_NO_EMPTY);
// per http://www.postgresql.org/docs/8.4/static/sql-createfunction.html
// IN is default
$direction = 'IN';
$name = '';
// if the first chunk is in or out, push it off as the direction
if (strcasecmp($chunks[0], 'IN') == 0 || strcasecmp($chunks[0], 'OUT') == 0) {
$direction = strtoupper(array_shift($chunks));
}
// only 1 remaining chunk, and no match to known types, cry about it
if (count($chunks) < 2 && preg_match(dbsteward::PATTERN_KNOWN_TYPES, implode(' ', $chunks)) == 0) {
throw new exception("unknown type encountered: " . implode(' ', $chunks));
}
// if the remainder is not a known type, push it off as the parameter name
if (preg_match(dbsteward::PATTERN_KNOWN_TYPES, implode(' ', $chunks)) == 0) {
$name = array_shift($chunks);
}
// whatever is left is the type of the parameter
$type = implode(' ', $chunks);
// is reformed type in the known type list?
if (preg_match(dbsteward::PATTERN_KNOWN_TYPES, $type) == 0) {
throw new exception("unknown type inferred: " . implode(' ', $chunks));
}
$function_parameter =& dbx::get_function_parameter($node_function, $name, true);
dbx::set_attribute($function_parameter, 'direction', $direction);
dbx::set_attribute($function_parameter, 'type', $type);
}
}
return self::get_declaration($node_schema, $node_function);
}
