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bird/conf/gen_context.m4
Maria Jan Matejka f93315c417 Config: Make the parser and lexer reentrant.
This is part of the multithreading journey. The parser and lexer were
using loads of global variables and all of these are now packed into
struct cf_context and others.

Note that the config API has changed:

* cfg_alloc[zu]?(size) is now cf_alloc[zu]?(ctx, size)
* cf_error(msg, ...) is now cf_error(ctx, msg, ...)
* config_parse() and cli_parse() are now called differently
* there is a brand new CF_CTX section in *.Y files which participates
  in struct cf_context construction
2018-09-14 14:44:45 +02:00

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m4_divert(-1)m4_dnl
#
# BIRD -- Generator of Configuration Context
#
# (c) 2018 Maria Matejka <mq@jmq.cz>
#
# Can be freely distributed and used under the terms of the GNU GPL.
#
# Common aliases
m4_define(DNL, `m4_dnl')
# Diversions used:
# 2 context
# We include all the headers
m4_define(CF_HDR, `m4_divert(0)')
m4_define(CF_CTX, `m4_divert(2)')
m4_define(CF_DECLS, `m4_divert(-1)')
m4_define(CF_DEFINES, `m4_divert(-1)')
# After all configuration templates end, we generate the
m4_m4wrap(`
m4_divert(0)
struct cf_context {
m4_undivert(2)
};
')
# As we are processing C source, we must access all M4 primitives via
# m4_* and also set different quoting convention: `[[' and ']]'
m4_changequote([[,]])