/**
* Returns true if schema contains function with given $declaration, otherwise false.
*
* @param $declaration declaration of the function
*
* @return true if schema contains function with given $declaration, otherwise false
*/
public static function contains_function($node_schema, $declaration)
{
$found = false;
foreach (dbx::get_functions($node_schema) as $node_function) {
if (strcasecmp(format_function::get_declaration($node_schema, $node_function, FALSE), $declaration) == 0) {
$found = true;
break;
}
}
return $found;
}
public static function &get_functions(&$node_schema)
{
$nodes = $node_schema->xpath("function");
// filter out versions of functon in languages that are not relevant to the current format being processed
$filtered_nodes = array();
foreach ($nodes as $node) {
if (format_function::has_definition($node)) {
$filtered_nodes[] = $node;
}
}
return $filtered_nodes;
}
