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bird/conf/gen_keywords.m4
Maria Matejka baf963973d Merge commit '80ca0ed2' into thread-merge-2.16
Fixed a nasty merge conflict with bgp_origin serving double duty
as both an attribute and enum name.
2024-11-29 10:20:08 +01:00

53 lines
2.1 KiB
Plaintext

m4_divert(-1)m4_dnl
#
# BIRD -- Generator of Configuration Keyword List
#
# (c) 1998--2000 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
#
# Can be freely distributed and used under the terms of the GNU GPL.
#
# Common aliases
m4_define(DNL, `m4_dnl')
# Diversions used:
# 1 keywords
# Simple iterator
m4_define(CF_itera, `m4_ifelse($#, 1, [[CF_iter($1)]], [[CF_iter($1)[[]]CF_itera(m4_shift($@))]])')
m4_define(CF_iterate, `m4_define([[CF_iter]], m4_defn([[$1]]))CF_itera($2)')
# We include all the headers
m4_define(CF_HDR, `m4_divert(0)')
m4_define(CF_DECLS, `m4_divert(-1)')
m4_define(CF_DEFINES, `m4_divert(-1)')
# Keywords are translated to C initializers
m4_define(CF_handle_kw, `m4_divert(1){ "m4_translit($1,[[A-Z]],[[a-z]])", $1 },
m4_divert(-1)')
m4_define(CF_keywd, `m4_ifdef([[CF_tok_$1]],,[[m4_define([[CF_tok_$1]],1)CF_handle_kw($1)]])')
m4_define(CF_KEYWORDS, `CF_iterate([[CF_keywd]], [[$@]])DNL')
# CLI commands generate keywords as well
m4_define(CF_CLI, `CF_KEYWORDS(m4_translit($1, [[ ]], [[,]]))
')
# Enums are translated to C initializers: use CF_ENUM(typename, prefix, values)
# For different prefix: CF_ENUM_PX(typename, external prefix, C prefix, values)
# The typename is converted to a keyword by removing T_ENUM_ prefix
m4_define(CF_enum, `m4_divert(1){ "CF_enum_prefix_ext[[]]$1", -((CF_enum_type<<16) | CF_enum_prefix_int[[]]$1) },
m4_divert(-1)')
m4_define(CF_ENUM, `CF_keywd(m4_substr($1, 7))m4_define([[CF_enum_type]],$1)m4_define([[CF_enum_prefix_ext]],$2)m4_define([[CF_enum_prefix_int]],$2)CF_iterate([[CF_enum]], [[m4_shift(m4_shift($@))]])DNL')
m4_define(CF_ENUM_PX, `CF_keywd(m4_substr($1, 7))m4_define([[CF_enum_type]],$1)m4_define([[CF_enum_prefix_ext]],$2)m4_define([[CF_enum_prefix_int]],$3)CF_iterate([[CF_enum]], [[m4_shift(m4_shift(m4_shift($@)))]])DNL')
# After all configuration templates end, we generate the keyword list
m4_m4wrap(`
m4_divert(0)
static const struct keyword keyword_list[] = {
m4_undivert(1){ NULL, -1 } };
')
# As we are processing C source, we must access all M4 primitives via
# m4_* and also set different quoting convention: `[[' and ']]'
m4_changequote([[,]])