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-rw-r--r--conf/cf-lex.l166
1 files changed, 67 insertions, 99 deletions
diff --git a/conf/cf-lex.l b/conf/cf-lex.l
index a24f5ad7..54d83496 100644
--- a/conf/cf-lex.l
+++ b/conf/cf-lex.l
@@ -48,6 +48,7 @@
#include "conf/conf.h"
#include "conf/cf-parse.tab.h"
#include "lib/string.h"
+#include "lib/hash.h"
struct keyword {
byte *name;
@@ -57,21 +58,31 @@ struct keyword {
#include "conf/keywords.h"
-#define KW_HASH_SIZE 64
-static struct keyword *kw_hash[KW_HASH_SIZE];
-static int kw_hash_inited;
-#define SYM_HASH_SIZE 128
+static uint cf_hash(byte *c);
-struct sym_scope {
- struct sym_scope *next; /* Next on scope stack */
- struct symbol *name; /* Name of this scope */
- int active; /* Currently entered */
-};
-static struct sym_scope *conf_this_scope;
+#define KW_KEY(n) n->name
+#define KW_NEXT(n) n->next
+#define KW_EQ(a,b) !strcmp(a,b)
+#define KW_FN(k) cf_hash(k)
+#define KW_ORDER 8 /* Fixed */
+
+#define SYM_KEY(n) n->name, n->scope->active
+#define SYM_NEXT(n) n->next
+#define SYM_EQ(a,s1,b,s2) !strcmp(a,b) && s1 == s2
+#define SYM_FN(k,s) cf_hash(k)
+#define SYM_ORDER 6 /* Initial */
+
+#define SYM_REHASH sym_rehash
+#define SYM_PARAMS /8, *1, 2, 2, 6, 20
+
+
+HASH_DEFINE_REHASH_FN(SYM, struct symbol)
+
+HASH(struct keyword) kw_hash;
-static int cf_hash(byte *c);
-static inline struct symbol * cf_get_sym(byte *c, uint h0);
+
+static struct sym_scope *conf_this_scope;
linpool *cfg_mem;
@@ -254,23 +265,20 @@ else: {
yytext[yyleng-1] = 0;
yytext++;
}
- unsigned int h = cf_hash(yytext);
- struct keyword *k = kw_hash[h & (KW_HASH_SIZE-1)];
- while (k)
+
+ struct keyword *k = HASH_FIND(kw_hash, KW, yytext);
+ if (k)
+ {
+ if (k->value > 0)
+ return k->value;
+ else
{
- if (!strcmp(k->name, yytext))
- {
- if (k->value > 0)
- return k->value;
- else
- {
- cf_lval.i = -k->value;
- return ENUM;
- }
- }
- k=k->next;
+ cf_lval.i = -k->value;
+ return ENUM;
}
- cf_lval.s = cf_get_sym(yytext, h);
+ }
+
+ cf_lval.s = cf_get_symbol(yytext);
return SYM;
}
@@ -333,13 +341,13 @@ else: {
%%
-static int
+static uint
cf_hash(byte *c)
{
- unsigned int h = 13;
+ uint h = 13 << 24;
while (*c)
- h = (h * 37) + *c++;
+ h = h + (h >> 2) + (h >> 5) + ((uint) *c++ << 24);
return h;
}
@@ -504,56 +512,27 @@ check_eof(void)
}
static struct symbol *
-cf_new_sym(byte *c, uint h0)
+cf_new_symbol(byte *c)
{
- uint h = h0 & (SYM_HASH_SIZE-1);
- struct symbol *s, **ht;
- int l;
-
- if (!new_config->sym_hash)
- new_config->sym_hash = cfg_allocz(SYM_HASH_SIZE * sizeof(struct keyword *));
- ht = new_config->sym_hash;
- l = strlen(c);
+ struct symbol *s;
+
+ uint l = strlen(c);
if (l > SYM_MAX_LEN)
cf_error("Symbol too long");
+
s = cfg_alloc(sizeof(struct symbol) + l);
- s->next = ht[h];
- ht[h] = s;
s->scope = conf_this_scope;
s->class = SYM_VOID;
s->def = NULL;
s->aux = 0;
strcpy(s->name, c);
- return s;
-}
-
-static struct symbol *
-cf_find_sym(struct config *cfg, byte *c, uint h0)
-{
- uint h = h0 & (SYM_HASH_SIZE-1);
- struct symbol *s, **ht;
- if (ht = cfg->sym_hash)
- {
- for(s = ht[h]; s; s=s->next)
- if (!strcmp(s->name, c) && s->scope->active)
- return s;
- }
- if (ht = cfg->sym_fallback)
- {
- /* We know only top-level scope is active */
- for(s = ht[h]; s; s=s->next)
- if (!strcmp(s->name, c) && s->scope->active)
- return s;
- }
+ if (!new_config->sym_hash.data)
+ HASH_INIT(new_config->sym_hash, new_config->pool, SYM_ORDER);
- return NULL;
-}
+ HASH_INSERT2(new_config->sym_hash, SYM, new_config->pool, s);
-static inline struct symbol *
-cf_get_sym(byte *c, uint h0)
-{
- return cf_find_sym(new_config, c, h0) ?: cf_new_sym(c, h0);
+ return s;
}
/**
@@ -570,7 +549,18 @@ cf_get_sym(byte *c, uint h0)
struct symbol *
cf_find_symbol(struct config *cfg, byte *c)
{
- return cf_find_sym(cfg, c, cf_hash(c));
+ struct symbol *s;
+
+ if (cfg->sym_hash.data &&
+ (s = HASH_FIND(cfg->sym_hash, SYM, c, 1)))
+ return s;
+
+ if (cfg->fallback &&
+ cfg->fallback->sym_hash.data &&
+ (s = HASH_FIND(cfg->fallback->sym_hash, SYM, c, 1)))
+ return s;
+
+ return NULL;
}
/**
@@ -585,7 +575,7 @@ cf_find_symbol(struct config *cfg, byte *c)
struct symbol *
cf_get_symbol(byte *c)
{
- return cf_get_sym(c, cf_hash(c));
+ return cf_find_symbol(new_config, c) ?: cf_new_symbol(c);
}
struct symbol *
@@ -598,7 +588,7 @@ cf_default_name(char *template, int *counter)
for(;;)
{
bsprintf(buf, template, ++(*counter));
- s = cf_get_sym(buf, cf_hash(buf));
+ s = cf_get_symbol(buf);
if (s->class == SYM_VOID)
return s;
if (!perc)
@@ -629,7 +619,7 @@ cf_define_symbol(struct symbol *sym, int type, void *def)
{
if (sym->scope == conf_this_scope)
cf_error("Symbol already defined");
- sym = cf_new_sym(sym->name, cf_hash(sym->name));
+ sym = cf_new_symbol(sym->name);
}
sym->class = type;
sym->def = def;
@@ -639,15 +629,11 @@ cf_define_symbol(struct symbol *sym, int type, void *def)
static void
cf_lex_init_kh(void)
{
- struct keyword *k;
+ HASH_INIT(kw_hash, &root_pool, KW_ORDER);
- for(k=keyword_list; k->name; k++)
- {
- unsigned h = cf_hash(k->name) & (KW_HASH_SIZE-1);
- k->next = kw_hash[h];
- kw_hash[h] = k;
- }
- kw_hash_inited = 1;
+ struct keyword *k;
+ for (k=keyword_list; k->name; k++)
+ HASH_INSERT(kw_hash, KW, k);
}
/**
@@ -661,7 +647,7 @@ cf_lex_init_kh(void)
void
cf_lex_init(int is_cli, struct config *c)
{
- if (!kw_hash_inited)
+ if (!kw_hash.data)
cf_lex_init_kh();
ifs_head = ifs = push_ifs(NULL);
@@ -720,24 +706,6 @@ cf_pop_scope(void)
ASSERT(conf_this_scope);
}
-struct symbol *
-cf_walk_symbols(struct config *cf, struct symbol *sym, int *pos)
-{
- for(;;)
- {
- if (!sym)
- {
- if (*pos >= SYM_HASH_SIZE)
- return NULL;
- sym = cf->sym_hash[(*pos)++];
- }
- else
- sym = sym->next;
- if (sym && sym->scope->active)
- return sym;
- }
-}
-
/**
* cf_symbol_class_name - get name of a symbol class
* @sym: symbol
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 23:48:05 +0000