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53 lines
2.0 KiB
Plaintext
53 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($1)]])')
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m4_define(CF_KEYWORDS, `m4_define([[CF_toks]],[[]])CF_iterate([[CF_keywd]], [[$@]])m4_ifelse(CF_toks,,,%token[[]]CF_toks
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)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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