%{
#include <ruby.h>
%}
%compare-lengths
%enum
%global-table
%language=ANSI-C
%pic
%struct-type
%define hash-function-name cf_hash
%define length-table-name cf_lengthtable
%define lookup-function-name cf_lookup
%define string-pool-name cf_stringpool
%define word-array-name cf_wordlist

struct common_field { size_t name; VALUE value; };
%%
ACCEPT
ACCEPT_CHARSET
ACCEPT_ENCODING
ACCEPT_LANGUAGE
ALLOW
AUTHORIZATION
CACHE_CONTROL
CONNECTION
CONTENT_ENCODING
CONTENT_LENGTH
CONTENT_TYPE
COOKIE
DATE
# Do Not Track
DNT
EXPECT
# RFC 7239 (does anybody use Forwarded:?)
FORWARDED
FROM
HOST
IF_MATCH
IF_MODIFIED_SINCE
IF_NONE_MATCH
IF_RANGE
IF_UNMODIFIED_SINCE
# Firefox sends Keep-Alive (or maybe only old versions?)
KEEP_ALIVE
MAX_FORWARDS
ORIGIN
PRAGMA
PROXY_AUTHORIZATION
RANGE
REFERER
TE
TRAILER
TRANSFER_ENCODING
UPGRADE
UPGRADE_INSECURE_REQUESTS
USER_AGENT
VIA
# common proxies set some of these X- headers
X_FORWARDED_FOR
X_FORWARDED_HOST
X_FORWARDED_PROTO
X_REAL_IP
X_REQUEST_ID
# XMLHttpRequest
X_REQUESTED_WITH
WARNING