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072771e4a5
Normally, contexts aren't used with a large number of macros, but in case someone does, do use hash tables for those as well. This simplifies the code somewhat, since *all* handling of macros is now done via hash tables. Future note: consider if it wouldn't be better to allow struct hash_table to be allocated by the caller, instead of being allocated by the hash table routine.
54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
/*
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* hashtbl.h
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*
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* Efficient dictionary hash table class.
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*/
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#ifndef NASM_HASHTBL_H
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#define NASM_HASHTBL_H
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#include <inttypes.h>
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#include <stddef.h>
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#include "nasmlib.h"
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struct hash_tbl_node {
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uint64_t hash;
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const char *key;
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void *data;
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};
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struct hash_table {
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struct hash_tbl_node *table;
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size_t load;
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size_t size;
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size_t max_load;
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};
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struct hash_insert {
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uint64_t hash;
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struct hash_table *head;
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struct hash_tbl_node *where;
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};
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uint64_t crc64(uint64_t crc, const char *string);
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uint64_t crc64i(uint64_t crc, const char *string);
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#define CRC64_INIT UINT64_C(0xffffffffffffffff)
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/* Some reasonable initial sizes... */
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#define HASH_SMALL 4
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#define HASH_MEDIUM 16
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#define HASH_LARGE 256
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struct hash_table *hash_init(size_t size);
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void **hash_find(struct hash_table *head, const char *string,
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struct hash_insert *insert);
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void **hash_findi(struct hash_table *head, const char *string,
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struct hash_insert *insert);
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void **hash_add(struct hash_insert *insert, const char *string, void *data);
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void *hash_iterate(const struct hash_table *head,
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struct hash_tbl_node **iterator,
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const char **key);
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void hash_free(struct hash_table *head);
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#endif /* NASM_HASHTBL_H */
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