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51e8996fff
This is a backport cherry-pick of commits165156beebcce974e8eafrom the v3.0 branch as we need symbol hashes directly inside their scopes for more general usage than before. The redefinable keywords must be specified in any .Y file as follows: toksym: THE_KEYWORD ;
52 lines
2.0 KiB
Plaintext
52 lines
2.0 KiB
Plaintext
m4_divert(-1)m4_dnl
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#
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# BIRD -- Generator of Configuration Keyword List
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#
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# (c) 1998--2000 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
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#
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# Can be freely distributed and used under the terms of the GNU GPL.
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#
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# Common aliases
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m4_define(DNL, `m4_dnl')
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# Diversions used:
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# 1 keywords
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# Simple iterator
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m4_define(CF_itera, `m4_ifelse($#, 1, [[CF_iter($1)]], [[CF_iter($1)[[]]CF_itera(m4_shift($@))]])')
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m4_define(CF_iterate, `m4_define([[CF_iter]], m4_defn([[$1]]))CF_itera($2)')
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# We include all the headers
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m4_define(CF_HDR, `m4_divert(0)')
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m4_define(CF_DECLS, `m4_divert(-1)')
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m4_define(CF_DEFINES, `m4_divert(-1)')
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# Keywords are translated to C initializers
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m4_define(CF_handle_kw, `m4_divert(1){ "m4_translit($1,[[A-Z]],[[a-z]])", $1, NULL },
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m4_divert(-1)')
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m4_define(CF_keywd, `m4_ifdef([[CF_tok_$1]],,[[m4_define([[CF_tok_$1]],1)CF_handle_kw($1)]])')
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m4_define(CF_KEYWORDS, `CF_iterate([[CF_keywd]], [[$@]])DNL')
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# CLI commands generate keywords as well
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m4_define(CF_CLI, `CF_KEYWORDS(m4_translit($1, [[ ]], [[,]]))
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')
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# Enums are translated to C initializers: use CF_ENUM(typename, prefix, values)
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# For different prefix: CF_ENUM_PX(typename, external prefix, C prefix, values)
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m4_define(CF_enum, `m4_divert(1){ "CF_enum_prefix_ext[[]]$1", -((CF_enum_type<<16) | CF_enum_prefix_int[[]]$1), NULL },
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m4_divert(-1)')
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m4_define(CF_ENUM, `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')
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m4_define(CF_ENUM_PX, `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')
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# After all configuration templates end, we generate the
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m4_m4wrap(`
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m4_divert(0)
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static struct keyword keyword_list[] = {
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m4_undivert(1){ NULL, -1, NULL } };
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')
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# As we are processing C source, we must access all M4 primitives via
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# m4_* and also set different quoting convention: `[[' and ']]'
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m4_changequote([[,]])
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