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Conf: Symbol hashes for all scopes
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.
This commit is contained in:
Maria Matejka
Ondrej Zajicek
parent
a5a6de581b
commit
8e177cf35b
@ -73,22 +73,22 @@ static uint cf_hash(const byte *c);
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#define KW_FN(k) cf_hash(k)
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#define KW_ORDER 8 /* Fixed */
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#define SYM_KEY(n) n->name, n->scope
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#define SYM_KEY(n) n->name
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#define SYM_NEXT(n) n->next
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#define SYM_EQ(a,s1,b,s2) !strcmp(a,b) && s1 == s2
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#define SYM_FN(k,s) cf_hash(k) ^ ptr_hash(s)
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#define SYM_ORDER 6 /* Initial */
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#define SYM_EQ(a,b) !strcmp(a,b)
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#define SYM_FN(k) cf_hash(k)
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#define SYM_ORDER 4 /* Initial */
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#define SYM_REHASH sym_rehash
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#define SYM_PARAMS /8, *1, 2, 2, 6, 20
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#define SYM_PARAMS /8, *1, 2, 2, 4, 20
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HASH_DEFINE_REHASH_FN(SYM, struct symbol)
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HASH(struct keyword) kw_hash;
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struct sym_scope *conf_this_scope;
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struct sym_scope *global_root_scope;
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linpool *cfg_mem;
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@ -580,12 +580,13 @@ cf_new_symbol(const byte *c)
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*s = (struct symbol) { .scope = conf_this_scope, .class = SYM_VOID, };
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strcpy(s->name, c);
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if (!new_config->sym_hash.data)
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HASH_INIT(new_config->sym_hash, new_config->pool, SYM_ORDER);
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if (!conf_this_scope->hash.data)
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HASH_INIT(conf_this_scope->hash, new_config->pool, SYM_ORDER);
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HASH_INSERT2(new_config->sym_hash, SYM, new_config->pool, s);
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HASH_INSERT2(conf_this_scope->hash, SYM, new_config->pool, s);
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add_tail(&(new_config->symbols), &(s->n));
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if (conf_this_scope == new_config->root_scope)
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add_tail(&(new_config->symbols), &(s->n));
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return s;
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}
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@ -595,32 +596,27 @@ cf_symbol_from_keyword(const struct keyword *kw)
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{ return cf_new_symbol(kw->name); }
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/**
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* cf_find_local_symbol - find a symbol by name
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* @cfg: specificed config
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* @scope: specified symbol scope
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* cf_find_symbol_scope - find a symbol by name
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* @scope: config scope
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* @c: symbol name
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*
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* This functions searches the symbol table in the config @cfg for a symbol of
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* given name. First it examines the scope @scope, then the parent scope
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* This functions searches the symbol table in the scope @scope for a symbol of
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* given name. First it examines the current scope, then the underlying one
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* and so on until it either finds the symbol and returns a pointer to its
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* &symbol structure or reaches the end of the scope chain and returns %NULL to
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* signify no match.
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*/
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struct symbol *
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cf_find_local_symbol(const struct config *cfg, const struct sym_scope *scope, const byte *c)
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cf_find_symbol_scope(const struct sym_scope *scope, const byte *c)
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{
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struct symbol *s;
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if (cfg->sym_hash.data)
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for (; scope; scope = scope->next)
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if (s = HASH_FIND(cfg->sym_hash, SYM, c, scope))
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return s;
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/* In CLI command parsing, fallback points to the current config, otherwise it is NULL. */
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if (cfg->fallback &&
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cfg->fallback->sym_hash.data &&
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(s = HASH_FIND(cfg->fallback->sym_hash, SYM, c, cfg->fallback->root_scope)))
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return s;
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/* Find the symbol here or anywhere below */
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while (scope)
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if (scope->hash.data && (s = HASH_FIND(scope->hash, SYM, c)))
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return s;
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else
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scope = scope->next;
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return NULL;
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}
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@ -637,7 +633,7 @@ cf_find_local_symbol(const struct config *cfg, const struct sym_scope *scope, co
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struct symbol *
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cf_get_symbol(const byte *c)
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{
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return cf_find_local_symbol(new_config, conf_this_scope, c) ?: cf_new_symbol(c);
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return cf_find_symbol_scope(conf_this_scope, c) ?: cf_new_symbol(c);
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}
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/**
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@ -685,23 +681,15 @@ static enum yytokentype
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cf_lex_symbol(const char *data)
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{
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/* Have we defined such a symbol? */
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struct symbol *sym = cf_find_local_symbol(new_config, conf_this_scope, data);
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struct symbol *sym = cf_get_symbol(data);
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cf_lval.s = sym;
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if (sym && (sym->class != SYM_VOID))
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{
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cf_lval.s = sym;
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return CF_SYM_KNOWN;
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}
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/* Is it a keyword? */
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/* Is it a keyword? Prefer the keyword. */
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struct keyword *k = HASH_FIND(kw_hash, KW, data);
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if (k)
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{
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if (k->value > 0)
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{
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cf_lval.kw = k;
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return k->value;
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}
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else
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{
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cf_lval.i = -k->value;
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@ -709,19 +697,23 @@ cf_lex_symbol(const char *data)
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}
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}
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/* OK, undefined symbol */
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cf_lval.s = cf_new_symbol(data);
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return CF_SYM_UNDEFINED;
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/* OK, only a symbol. */
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if (sym->class == SYM_VOID)
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return CF_SYM_UNDEFINED;
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else
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return CF_SYM_KNOWN;
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}
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static void
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cf_lex_init_kh(void)
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{
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HASH_INIT(kw_hash, config_pool, KW_ORDER);
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HASH_INIT(kw_hash, &root_pool, KW_ORDER);
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struct keyword *k;
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for (k=keyword_list; k->name; k++)
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HASH_INSERT(kw_hash, KW, k);
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global_root_scope = mb_allocz(&root_pool, sizeof(*global_root_scope));
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}
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/**
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@ -757,6 +749,11 @@ cf_lex_init(int is_cli, struct config *c)
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c->root_scope = cfg_allocz(sizeof(struct sym_scope));
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conf_this_scope = c->root_scope;
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conf_this_scope->active = 1;
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if (is_cli)
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conf_this_scope->next = config->root_scope;
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else
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conf_this_scope->next = global_root_scope;
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}
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/**
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@ -170,7 +170,6 @@ int
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cli_parse(struct config *c)
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{
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int done = 0;
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c->fallback = config;
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new_config = c;
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cfg_mem = c->mem;
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if (setjmp(conf_jmpbuf))
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@ -181,7 +180,6 @@ cli_parse(struct config *c)
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done = 1;
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cleanup:
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c->fallback = NULL;
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new_config = NULL;
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cfg_mem = NULL;
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return done;
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@ -551,7 +549,6 @@ order_shutdown(int gr)
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init_list(&c->tables);
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init_list(&c->symbols);
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memset(c->def_tables, 0, sizeof(c->def_tables));
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HASH_INIT(c->sym_hash, c->pool, 4);
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c->shutdown = 1;
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c->gr_down = gr;
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21
conf/conf.h
21
conf/conf.h
@ -16,7 +16,6 @@
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#include "lib/timer.h"
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/* Configuration structure */
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struct config {
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pool *pool; /* Pool the configuration is stored in */
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linpool *mem; /* Linear pool containing configuration data */
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@ -53,8 +52,7 @@ struct config {
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char *err_file_name; /* File name containing error */
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char *file_name; /* Name of main configuration file */
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int file_fd; /* File descriptor of main configuration file */
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HASH(struct symbol) sym_hash; /* Lexer: symbol hash table */
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struct config *fallback; /* Link to regular config for CLI parsing */
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struct sym_scope *root_scope; /* Scope for root symbols */
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int obstacle_count; /* Number of items blocking freeing of this config */
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int shutdown; /* This is a pseudo-config for daemon shutdown */
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@ -133,12 +131,17 @@ struct symbol {
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struct sym_scope {
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struct sym_scope *next; /* Next on scope stack */
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struct symbol *name; /* Name of this scope */
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HASH(struct symbol) hash; /* Local symbol hash */
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uint slots; /* Variable slots */
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byte active; /* Currently entered */
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byte block; /* No independent stack frame */
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byte soft_scopes; /* Number of soft scopes above */
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};
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extern struct sym_scope *global_root_scope;
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struct bytestring {
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size_t length;
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byte data[];
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@ -187,12 +190,14 @@ int cf_lex(void);
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void cf_lex_init(int is_cli, struct config *c);
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void cf_lex_unwind(void);
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struct symbol *cf_find_local_symbol(const struct config *cfg, const struct sym_scope *scope, const byte *c);
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static inline struct symbol *cf_find_symbol(const struct config *cfg, const byte *c)
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{ return cf_find_local_symbol(cfg, cfg->root_scope, c); }
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struct symbol *cf_find_symbol_scope(const struct sym_scope *scope, const byte *c);
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static inline struct symbol *cf_find_symbol_cfg(const struct config *cfg, const byte *c)
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{ return cf_find_symbol_scope(cfg->root_scope, c); }
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struct keyword;
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struct symbol *cf_symbol_from_keyword(const struct keyword *kw);
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#define cf_find_symbol(where, what) _Generic(*(where), \
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struct config: cf_find_symbol_cfg, \
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struct sym_scope: cf_find_symbol_scope \
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)((where), (what))
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struct symbol *cf_get_symbol(const byte *c);
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struct symbol *cf_default_name(char *template, int *counter);
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@ -118,7 +118,7 @@ CF_DECLS
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%type <t> text opttext
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%type <bs> bytestring
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%type <s> symbol
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%type <s> symbol symbol_known
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%type <v> bytestring_text text_or_ipa
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%type <x> bytestring_expr
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@ -166,7 +166,7 @@ definition:
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expr:
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NUM
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| '(' term ')' { $$ = cf_eval_int($2); }
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| CF_SYM_KNOWN {
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| symbol_known {
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if ($1->class != (SYM_CONSTANT | T_INT)) cf_error("Number constant expected");
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$$ = SYM_VAL($1).i; }
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;
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@ -177,7 +177,8 @@ expr_us:
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| expr US { $$ = $1 US_; }
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;
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symbol: CF_SYM_UNDEFINED | CF_SYM_KNOWN | KEYWORD { $$ = cf_symbol_from_keyword($1); } ;
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symbol: CF_SYM_UNDEFINED | CF_SYM_KNOWN | KEYWORD ;
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symbol_known: CF_SYM_KNOWN | KEYWORD ;
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/* Switches */
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@ -26,8 +26,7 @@ m4_define(CF_DEFINES, `m4_divert(-1)')
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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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m4_define(CF_KEYWORDS, `CF_iterate([[CF_keywd]], [[$@]])DNL')
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m4_define(CF_KEYWORDS_EXCLUSIVE, `CF_KEYWORDS($@)')
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# CLI commands generate keywords as well
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@ -31,13 +31,13 @@ m4_define(CF_iterate, `m4_define([[CF_iter]], m4_defn([[$1]]))CF_itera($2)')
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m4_define(CF_append, `m4_define([[$1]], m4_ifdef([[$1]], m4_defn([[$1]])[[$3]])[[$2]])')
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# Keywords act as %token<kw>
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# Keywords act as %token<s>
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m4_define(CF_keywd, `m4_ifdef([[CF_tok_$1]],,[[m4_define([[CF_tok_$1]],1)CF_append([[CF_kw_rule]],$1,[[ | ]])m4_define([[CF_toks]],CF_toks $1)]])')
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m4_define(CF_KEYWORDS, `m4_define([[CF_toks]],[[]])CF_iterate([[CF_keywd]], [[$@]])m4_ifelse(CF_toks,,,%token<kw>[[]]CF_toks
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m4_define(CF_KEYWORDS, `m4_define([[CF_toks]],[[]])CF_iterate([[CF_keywd]], [[$@]])m4_ifelse(CF_toks,,,%token<s>[[]]CF_toks
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)DNL')
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m4_define(CF_keywd2, `m4_ifdef([[CF_tok_$1]],,[[m4_define([[CF_tok_$1]],1)m4_define([[CF_toks]],CF_toks $1)]])')
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m4_define(CF_KEYWORDS_EXCLUSIVE, `m4_define([[CF_toks]],[[]])CF_iterate([[CF_keywd2]], [[$@]])m4_ifelse(CF_toks,,,%token<kw>[[]]CF_toks
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m4_define(CF_KEYWORDS_EXCLUSIVE, `m4_define([[CF_toks]],[[]])CF_iterate([[CF_keywd2]], [[$@]])m4_ifelse(CF_toks,,,%token<s>[[]]CF_toks
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)DNL')
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# CLI commands
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@ -61,7 +61,7 @@ m4_undivert(1)DNL
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m4_undivert(2)DNL
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%type <kw> KEYWORD
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%type <s> KEYWORD
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%%
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KEYWORD: CF_kw_rule;
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@ -317,8 +317,8 @@ CF_KEYWORDS(FUNCTION, PRINT, PRINTN, UNSET, RETURN,
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LEN, MAXLEN,
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DATA, DATA1, DATA2,
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DEFINED,
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ADD, DELETE, CONTAINS, RESET,
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PREPEND, FIRST, LAST, LAST_NONAGGREGATED, MATCH,
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ADD, DELETE, RESET,
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PREPEND, FIRST, LAST, LAST_NONAGGREGATED,
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MIN, MAX,
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EMPTY,
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FILTER, WHERE, EVAL, ATTRIBUTE,
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@ -373,7 +373,7 @@ custom_attr: ATTRIBUTE type symbol ';' {
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conf: bt_test_suite ;
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bt_test_suite:
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BT_TEST_SUITE '(' CF_SYM_KNOWN ',' text ')' {
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BT_TEST_SUITE '(' symbol_known ',' text ')' {
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cf_assert_symbol($3, SYM_FUNCTION);
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struct f_bt_test_suite *t = cfg_allocz(sizeof(struct f_bt_test_suite));
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t->fn = $3->function;
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@ -386,7 +386,7 @@ bt_test_suite:
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conf: bt_test_same ;
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bt_test_same:
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BT_TEST_SAME '(' CF_SYM_KNOWN ',' CF_SYM_KNOWN ',' NUM ')' {
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BT_TEST_SAME '(' symbol_known ',' symbol_known ',' NUM ')' {
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cf_assert_symbol($3, SYM_FUNCTION);
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cf_assert_symbol($5, SYM_FUNCTION);
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struct f_bt_test_suite *t = cfg_allocz(sizeof(struct f_bt_test_suite));
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@ -468,7 +468,7 @@ function_vars:
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filter_body: function_body ;
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filter:
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CF_SYM_KNOWN {
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symbol_known {
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cf_assert_symbol($1, SYM_FILTER);
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$$ = $1->filter;
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}
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@ -581,7 +581,7 @@ set_atom:
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$$ = cf_eval($2, T_VOID);
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if (!f_valid_set_type($$.type)) cf_error("Set-incompatible type");
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}
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| CF_SYM_KNOWN {
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| symbol_known {
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cf_assert_symbol($1, SYM_CONSTANT);
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if (!f_valid_set_type(SYM_TYPE($1))) cf_error("%s: set-incompatible type", $1->name);
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$$ = *$1->val;
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@ -753,7 +753,7 @@ var_list: /* EMPTY */ { $$ = NULL; }
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| var_list ',' term { $$ = $3; $$->next = $1; }
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function_call:
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CF_SYM_KNOWN '(' var_list ')'
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symbol_known '(' var_list ')'
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{
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if ($1->class != SYM_FUNCTION)
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cf_error("You can't call something which is not a function. Really.");
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@ -772,7 +772,7 @@ function_call:
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}
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;
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symbol_value: CF_SYM_KNOWN
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symbol_value: symbol_known
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{
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switch ($1->class) {
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case SYM_CONSTANT_RANGE:
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@ -938,7 +938,7 @@ cmd:
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$$ = f_new_inst(FI_FOR_INIT, $6, $3);
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$$->next = f_new_inst(FI_FOR_NEXT, $3, $9);
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}
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| CF_SYM_KNOWN '=' term ';' {
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| symbol_known '=' term ';' {
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switch ($1->class) {
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case SYM_VARIABLE_RANGE:
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$$ = f_new_inst(FI_VAR_SET, $3, $1);
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19
nest/cmds.c
19
nest/cmds.c
@ -51,17 +51,18 @@ cmd_show_symbols(struct sym_show_data *sd)
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cli_msg(1010, "%-8s\t%s", sd->sym->name, cf_symbol_class_name(sd->sym));
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else
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{
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HASH_WALK(config->sym_hash, next, sym)
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{
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if (!sym->scope->active)
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continue;
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for (const struct sym_scope *scope = config->root_scope; scope; scope = scope->next)
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HASH_WALK(scope->hash, next, sym)
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{
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if (!sym->scope->active)
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continue;
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if (sd->type && (sym->class != sd->type))
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continue;
|
||||
if (sd->type && (sym->class != sd->type))
|
||||
continue;
|
||||
|
||||
cli_msg(-1010, "%-8s\t%s", sym->name, cf_symbol_class_name(sym));
|
||||
}
|
||||
HASH_WALK_END;
|
||||
cli_msg(-1010, "%-8s\t%s", sym->name, cf_symbol_class_name(sym));
|
||||
}
|
||||
HASH_WALK_END;
|
||||
|
||||
cli_msg(0, "");
|
||||
}
|
||||
|
||||
@ -118,11 +118,11 @@ CF_KEYWORDS(IPV4, IPV6, VPN4, VPN6, ROA4, ROA6, FLOW4, FLOW6, SADR, MPLS)
|
||||
CF_KEYWORDS(RECEIVE, LIMIT, ACTION, WARN, BLOCK, RESTART, DISABLE, KEEP, FILTERED, RPKI)
|
||||
CF_KEYWORDS(PASSWORD, KEY, FROM, PASSIVE, TO, ID, EVENTS, PACKETS, PROTOCOLS, CHANNELS, INTERFACES)
|
||||
CF_KEYWORDS(ALGORITHM, KEYED, HMAC, MD5, SHA1, SHA256, SHA384, SHA512, BLAKE2S128, BLAKE2S256, BLAKE2B256, BLAKE2B512)
|
||||
CF_KEYWORDS(PRIMARY, STATS, COUNT, BY, FOR, IN, COMMANDS, PREEXPORT, NOEXPORT, EXPORTED, GENERATE)
|
||||
CF_KEYWORDS(PRIMARY, STATS, COUNT, FOR, IN, COMMANDS, PREEXPORT, NOEXPORT, EXPORTED, GENERATE)
|
||||
CF_KEYWORDS(BGP, PASSWORDS, DESCRIPTION)
|
||||
CF_KEYWORDS(RELOAD, IN, OUT, MRTDUMP, MESSAGES, RESTRICT, MEMORY, IGP_METRIC, CLASS, DSCP)
|
||||
CF_KEYWORDS(TIMEFORMAT, ISO, SHORT, LONG, ROUTE, PROTOCOL, BASE, LOG, S, MS, US)
|
||||
CF_KEYWORDS(GRACEFUL, RESTART, WAIT, MAX, FLUSH, AS)
|
||||
CF_KEYWORDS(GRACEFUL, RESTART, WAIT, MAX, AS)
|
||||
CF_KEYWORDS(MIN, IDLE, RX, TX, INTERVAL, MULTIPLIER, PASSIVE)
|
||||
CF_KEYWORDS(CHECK, LINK)
|
||||
CF_KEYWORDS(SORTED, TRIE, MIN, MAX, SETTLE, TIME, GC, THRESHOLD, PERIOD)
|
||||
@ -645,7 +645,7 @@ r_args:
|
||||
$$ = cfg_allocz(sizeof(struct rt_show_data));
|
||||
init_list(&($$->tables));
|
||||
$$->filter = FILTER_ACCEPT;
|
||||
$$->running_on_config = new_config->fallback;
|
||||
$$->running_on_config = config;
|
||||
}
|
||||
| r_args net_any {
|
||||
$$ = $1;
|
||||
@ -666,7 +666,7 @@ r_args:
|
||||
$$->addr = $3;
|
||||
$$->addr_mode = RSD_ADDR_IN;
|
||||
}
|
||||
| r_args TABLE CF_SYM_KNOWN {
|
||||
| r_args TABLE symbol_known {
|
||||
cf_assert_symbol($3, SYM_TABLE);
|
||||
$$ = $1;
|
||||
rt_show_add_table($$, $3->table->table);
|
||||
@ -711,7 +711,7 @@ r_args:
|
||||
$$ = $1;
|
||||
$$->filtered = 1;
|
||||
}
|
||||
| r_args export_mode CF_SYM_KNOWN {
|
||||
| r_args export_mode symbol_known {
|
||||
cf_assert_symbol($3, SYM_PROTO);
|
||||
struct proto_config *c = (struct proto_config *) $3->proto;
|
||||
$$ = $1;
|
||||
@ -728,7 +728,7 @@ r_args:
|
||||
$$->export_channel = $3;
|
||||
$$->tables_defined_by = RSD_TDB_INDIRECT;
|
||||
}
|
||||
| r_args PROTOCOL CF_SYM_KNOWN {
|
||||
| r_args PROTOCOL symbol_known {
|
||||
cf_assert_symbol($3, SYM_PROTO);
|
||||
struct proto_config *c = (struct proto_config *) $3->proto;
|
||||
$$ = $1;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user