1998-11-27 19:33:26 +00:00
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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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2000-04-28 15:12:03 +00:00
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# (c) 1998--2000 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
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1998-11-27 19:33:26 +00:00
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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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2000-04-28 15:12:03 +00:00
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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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1998-11-27 19:33:26 +00:00
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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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2000-04-28 15:12:03 +00:00
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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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1998-11-27 19:33:26 +00:00
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# Keywords are translated to C initializers
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Filter: Methods rework
Methods can now be called as x.m(y), as long as x can have its type
inferred in config time. If used as a command, it modifies the object,
if used as a value, it keeps the original object intact.
Also functions add(x,y), delete(x,y), filter(x,y) and prepend(x,y) now
spit a warning and are considered deprecated.
It's also possible to call a method on a constant, see filter/test.conf
for examples like bgp_path = +empty+.prepend(1).
Inside instruction definitions (filter/f-inst.c), a METHOD_CONSTRUCTOR()
call is added, which registers the instruction as a method for the type
of its first argument. Each type has its own method symbol table and
filter parser switches between them based on the inferred type of the
object calling the method.
Also FI_CLIST_(ADD|DELETE|FILTER) instructions have been split to allow
for this method dispatch. With type inference, it's now possible.
2023-06-16 15:35:37 +00:00
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m4_define(CF_handle_kw, `m4_divert(1){ "m4_translit($1,[[A-Z]],[[a-z]])", $1 },
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1998-11-27 19:33:26 +00:00
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m4_divert(-1)')
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Filter: Methods rework
Methods can now be called as x.m(y), as long as x can have its type
inferred in config time. If used as a command, it modifies the object,
if used as a value, it keeps the original object intact.
Also functions add(x,y), delete(x,y), filter(x,y) and prepend(x,y) now
spit a warning and are considered deprecated.
It's also possible to call a method on a constant, see filter/test.conf
for examples like bgp_path = +empty+.prepend(1).
Inside instruction definitions (filter/f-inst.c), a METHOD_CONSTRUCTOR()
call is added, which registers the instruction as a method for the type
of its first argument. Each type has its own method symbol table and
filter parser switches between them based on the inferred type of the
object calling the method.
Also FI_CLIST_(ADD|DELETE|FILTER) instructions have been split to allow
for this method dispatch. With type inference, it's now possible.
2023-06-16 15:35:37 +00:00
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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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2022-12-13 18:31:46 +00:00
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m4_define(CF_KEYWORDS_EXCLUSIVE, `CF_KEYWORDS($@)')
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1998-11-27 19:33:26 +00:00
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Parse CLI commands. We use the same parser as for configuration files (because
we want to allow filter and similar complex constructs to be used in commands
and we should avoid code duplication), only with CLI_MARKER token prepended
before the whole input.
Defined macro CF_CLI(cmd, args, help) for defining CLI commands in .Y files.
The first argument specifies the command itself, the remaining two arguments
are copied to the help file (er, will be copied after the help file starts
to exist). This macro automatically creates a skeleton rule for the command,
you only need to append arguments as in:
CF_CLI(STEAL MONEY, <$>, [[Steal <$> US dollars or equivalent in any other currency]]): NUM {
cli_msg(0, "%d$ stolen", $3);
} ;
Also don't forget to reset lexer state between inputs.
1999-10-31 17:47:47 +00:00
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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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1999-11-15 11:35:41 +00:00
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# Enums are translated to C initializers: use CF_ENUM(typename, prefix, values)
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2019-11-03 19:26:54 +00:00
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# For different prefix: CF_ENUM_PX(typename, external prefix, C prefix, values)
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2023-06-09 10:49:19 +00:00
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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) },
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1999-11-15 11:35:41 +00:00
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m4_divert(-1)')
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2019-11-03 19:26:54 +00:00
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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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1999-11-15 11:35:41 +00:00
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2000-04-28 15:12:03 +00:00
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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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2023-06-09 10:49:19 +00:00
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static const struct keyword keyword_list[] = {
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m4_undivert(1){ NULL, -1 } };
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2000-04-28 15:12:03 +00:00
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')
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1998-11-27 19:33:26 +00:00
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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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