function parseFunction($ast)
{
assert_ast_type($ast, NodeType::FUNC);
$data = ast_node_data($ast);
$name = parseIdentifier(ast_get($data, NodeKey::NAME));
$args = parseExpressionList(ast_get($data, NodeKey::ARGS));
$targs = parseTemplateArgs(ast_get($data, NodeKey::TARGS));
$targs = is_null($targs) ? [] : $targs;
$source = ast_node_source($ast);
$arg_types = array_map(function ($item) {
return $item->type();
}, $args);
try {
$func = lookupFunction($name, $arg_types, $targs);
} catch (Exception $e) {
grokit_error('Failed to find function ' . $name . ' called from ' . $source, $e);
}
$info = $func->apply($args, $source);
// If the function is deterministic and all of the expressions were constant,
// just turn this expression into a constant.
if ($info->is_const()) {
$info->makeConstant();
}
return $info;
}
function parseImport($ast)
{
assert_ast_type($ast, NodeType::IMPORT);
$lib = parseIdentifier(ast_node_data($ast));
$source = ast_node_source($ast);
$base_dir = getenv('GROKIT_INSTALLED_LIBRARY_PATH');
$parts = LibraryManager::SplitNamespace($lib);
$file = $base_dir . DIRECTORY_SEPARATOR . implode(DIRECTORY_SEPARATOR, $parts) . '.php';
$result = (include_once $file);
grokit_assert($result !== false, 'Failed to include library ' . $lib . ', no library file ' . $file . ' found ' . $source);
}