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-rw-r--r--src/hash_table.c119
1 files changed, 0 insertions, 119 deletions
diff --git a/src/hash_table.c b/src/hash_table.c
deleted file mode 100644
index bedeb4a..0000000
--- a/src/hash_table.c
+++ /dev/null
@@ -1,119 +0,0 @@
-#include "hash_table.h"
-
-#include <stdlib.h>
-#include <string.h>
-
-#include "basic_traits.h"
-
-#define HTFL_NUL 0
-#define HTFL_VAL 1
-#define HTFL_DEL 2
-
-HASH_TABLE_IMPL(String, Int);
-HASH_TABLE_IMPL(String, String);
-HASH_TABLE_IMPL(String, Double);
-HASH_TABLE_IMPL(String, VoidPtr);
-HASH_TABLE_IMPL(Int, Int);
-HASH_TABLE_IMPL(Int, Double);
-HASH_TABLE_IMPL(VoidPtr, Int);
-HASH_TABLE_IMPL(VoidPtr, VoidPtr);
-HASH_TABLE_IMPL(VoidPtr, String);
-
-
-static void rebuild(HashTable *ht, uint64_t (*hash)(void*), bool (*eq)(void*, void*)) {
- HashTable newht;
- init_hash_table(&newht, ht->elemsz, ht->size * 6);
- void *iter = hash_table_begin(ht);
- while (iter != NULL) {
- hash_table_insert(&newht, iter, hash, eq);
- iter = hash_table_next(ht, iter);
- }
- free(ht->buf);
- free(ht->flagbuf);
- *ht = newht;
-}
-
-void init_hash_table(HashTable *ht, int64_t elemsz, int64_t cap) {
- if (cap < 16) cap = 16;
- ht->buf = malloc(cap * elemsz);
- ht->flagbuf = malloc(cap);
- memset(ht->buf, 0, cap * elemsz);
- memset(ht->flagbuf, 0, cap);
- ht->size = 0;
- ht->cap = cap;
- ht->taken = 0;
- ht->elemsz = elemsz;
-}
-
-bool hash_table_insert(HashTable *ht, void *elem, uint64_t (*hash)(void*), bool (*eq)(void*, void*)) {
- if (ht->taken + 1 > ht->cap / 2) {
- rebuild(ht, hash, eq);
- }
- ht->taken++;
- ht->size++;
- int64_t pos = hash(elem) % ht->cap;
- while (ht->flagbuf[pos] != HTFL_NUL) {
- if (ht->flagbuf[pos] == HTFL_VAL
- && eq(ht->buf + pos * ht->elemsz, elem)) {
- return false;
- }
- pos++;
- if (pos >= ht->cap) { // arrived end, restart from beginning
- pos = 0;
- }
- }
- memcpy(ht->buf + pos * ht->elemsz, elem, ht->elemsz);
- ht->flagbuf[pos] = HTFL_VAL;
- return true;
-}
-
-void hash_table_remove(HashTable *ht, void * ptr) {
- ht->size--;
- int64_t pos = (ptr - ht->buf) / ht->elemsz;
- ht->flagbuf[pos] = HTFL_DEL;
-}
-
-void *hash_table_ref(HashTable *ht, int64_t pos) {
- return ht->buf + pos * ht->elemsz;
-}
-
-void *hash_table_find(HashTable *ht, void *elem, uint64_t (*hash)(void*), bool (*eq)(void*, void*)) {
- int64_t pos = hash(elem) % ht->cap;
- while (ht->flagbuf[pos] != HTFL_NUL) {
- if (ht->flagbuf[pos] == HTFL_VAL
- && eq(hash_table_ref(ht, pos), elem)) {
- return hash_table_ref(ht, pos);
- }
- pos++;
- if (pos >= ht->cap) { // arrived end, restart from beginning
- pos = 0;
- }
- }
- return NULL;
-}
-
-void* hash_table_begin(HashTable *ht) {
- if (ht->size <= 0) return NULL;
- for (int64_t i = 0; i < ht->cap; i++) {
- if (ht->flagbuf[i] == HTFL_VAL) {
- return hash_table_ref(ht, i);
- }
- }
- return NULL;
-}
-
-void *hash_table_next(HashTable *ht, void *iter) {
- int64_t pos = (iter - ht->buf) / ht->elemsz;
- do {
- pos++;
- if (pos >= ht->cap) {
- return NULL;
- }
- } while (ht->flagbuf[pos] != HTFL_VAL);
- return hash_table_ref(ht, pos);
-}
-
-void destroy_hash_table(HashTable *ht) {
- free(ht->buf);
- free(ht->flagbuf);
-}