SignatureParser.grako

start               = function_definition ;
function_definition = [access_modifier] return_type [cdecl] full_function_name function_arg_list [function_modifier] ;
return_type         = full_type_name ;
access_modifier     = "public:" | "private:" | "protected:" ;
cdecl               = "__cdecl" ;
full_function_name  = (full_namespace function_name) | function_name ;
function_arg_list   = "(" [function_arguments] ")" ;
function_modifier   = "const" ;
full_type_name      = type:([class_key] (full_namespace "::" type_name | type_name) {pointer_or_ref_chars} [ "__ptr64" ]);
full_namespace      = (namespace "::" full_namespace) | (namespace "::") ;
namespace           = namespace:full_type_name ;
function_name       = identifier ;
function_arguments  = (full_type_name "," function_arguments) | full_type_name ;
type_name           = (identifier "<" template_args_list ">") | identifier;
template_args_list  = (template_argument "," template_args_list) | template_argument ;
template_argument   = ([class_key] full_type_name) | literal_int ;
identifier           = nondigit /[A-Za-z0-9_]*/ ;
class_key            = "class" | "struct" | "union" ;
literal_int          = /[0-9]+/ ;
nondigit             = /[A-Za-z_]/ ;
pointer_or_ref_chars = "*" | "&" | "&&" | "const";