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bird/conf/parser.h

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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
2018-08-13 09:41:27 +00:00
/*
* BIRD Internet Routing Daemon -- Configuration Parser Headers
*
* (c) 2018 Maria Matejka <mq@jmq.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#ifndef _BIRD_CONF_PARSER_H_
#define _BIRD_CONF_PARSER_H_
#include "conf/context.h"
/* Pools */
#define cfg_alloc(size) lp_alloc(ctx->cfg_mem, size)
#define cfg_allocu(size) lp_allocu(ctx->cfg_mem, size)
#define cfg_allocz(size) lp_allocz(ctx->cfg_mem, size)
#define cfg_strdup(str) cf_strdup(ctx, str)
#define cfg_copy_list(dest, src, node_size) cf_copy_list(ctx, dest, src, node_size)
/* Lexer */
/* Generated lexer entry point */
typedef void * yyscan_t;
union YYSTYPE;
int cfx_lex(union YYSTYPE *, yyscan_t);
/* Config context alloc and free */
struct cf_context *cf_new_context(int, struct conf_order *);
void cf_free_context(struct cf_context *);
/* Lexer state alloc and free */
struct conf_state *cf_new_state(struct cf_context *ctx, const char *name);
void cf_free_state(struct cf_context *ctx, struct conf_state *cs);
Lexer: Passing the buffer to Flex directly.
2018-08-23 19:54:35 +00:00
/* Lexer input is a memory buffer */
void cf_scan_bytes(struct cf_context *, const char *, uint);
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
2018-08-13 09:41:27 +00:00
/* Init keyword hash is called once from global init */
void cf_init_kh(void);
/* Hash function is common for keywords and symbols */
uint cf_hash(byte *c);
/* Parser */
extern char *cf_text;
int cfx_parse(struct cf_context *ctx, void *yyscanner);
/* Generated error callback */
#define cfx_error(ctx, yyscanner, ...) cf_error(ctx, __VA_ARGS__)
/* Symbols */
void cf_push_scope(struct cf_context *, struct symbol *);
void cf_pop_scope(struct cf_context *);
struct symbol *cf_get_symbol(struct cf_context *ctx, byte *c);
struct symbol *cf_default_name(struct cf_context *ctx, char *template, int *counter);
struct symbol *cf_define_symbol(struct cf_context *ctx, struct symbol *symbol, int type, void *def);
#endif
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