UE4 Generator Attributes

Here’s the list of attributes that affect UE4 code generation.

See also

• JSON Serialization Attributes

• Binary Igor Protocol Attributes

Attribute	Type	Inheritance	Target	Description	Default
enabled	bool	scope	module, type	Enables code generation for the module or type	true
igor_path	string	scope	module	Path to the Igor runtime library
h_file	string		module	Override generated h file name
cpp_file	string		module	Override generated cpp file name
h_path	string	scope	module	Header output folder
cpp_path	string	scope	module	Cpp output folder
namespace	string	scope	module, type	C++ namespace Nested namespaces should be separated with ::
prefix	string	scope	type	Type name project prefix
name	string		module, type, record field enum field	Override generated name.
base_type	string		record, variant	Ancestor type for the struct or class
alias	string		type	Provide existing target type. Do not generate type definition
typedef	string		alias type	Generate typedef declaration for the alias type	true
ptr	bool		record	Use TSharedPtr to store values (e.g. record fields) of this type.	true
interfaces	bool	scope	module interface	Generate abstract classes for interfaces (not compatible with ustructs)	false
uenum	bool		enum	Define enum as UENUM	false
ustruct	bool		record	Define record as USTRUCT	false
uclass	bool		record	Define record as UCLASS	false
blueprint_type	bool		record enum	BlueprintType specifier for USTRUCT, UCLASS or UENUM.	false
uproperty	bool	scope	record field	Define record field as UPROPERTY.	false
h_include	string		module	Include an extra header to a generated h file. Multiple attribute values can be set.
cpp_include	string		module	Include an extra header to a generated cpp file. Multiple attribute values can be set.
log_category	string	scope	module	Log category for UE_LOG macros	"LogTemp"
http.base_url	string		webservice	Default HTTP client base url
http.client.lazy	bool	scope	webservice webresource	Don’t process HTTP request immediately but allow a user to setup request first.	false
http.client.content_setup	args request	scope	webservice webresource	How HTTP client request content is set up by a user. See HTTP Client Request Setup.	args
http.client.path_setup	args request	scope	webservice webresource	How HTTP client request path params are set up by a user. See HTTP Client Request Setup.	args
http.client.query_setup	args request	scope	webservice webresource	How HTTP client request query params are set up by a user. See HTTP Client Request Setup.	args
http.client.header_setup	args request	scope	webservice webresource	How HTTP client request headers are set up by a user. See HTTP Client Request Setup.	args
http.client.setup	args request		web variable	Override how HTTP client request variable is set up. See HTTP Client Request Setup.	args

The following attributes enable generation of UE4 UPROPERTY specifiers. They are supported for record fields and have scope inheritance.

Attribute	Type	UE4 UPROPERTY specifier
blueprint_read_write	bool	BlueprintReadWrite
blueprint_read_only	bool	BlueprintReadOnly
edit_anywhere	bool	EditAnywhere
edit_defaults_only	bool	EditDefaultsOnly
visible_anywhere	bool	VisibleAnywhere
visible_defaults_only	bool	VisibleDefaultsOnly
category	string	Category