Appendix B P4 reserved keywords

The following table shows all P4 reserved keywords. Some identifiers are treated as keywords only in specific contexts (e.g., the keyword actions).

abstract	action	apply	bit
bool	const	control	default
else	enum	error	extern
exit	false	header	header_union
if	in	inout	int
list	match_kind	package	parser
out	return	select	state
string	struct	switch	table
this	transition	true	tuple
type	typedef	value_set	varbit
verify	void