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Enhance chibicc

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This commit is contained in:
Justine Tunney 2020-12-09 04:00:48 -08:00
parent 8da931a7f6
commit 9df2cef4c4
52 changed files with 2606 additions and 2004 deletions
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36
third_party/chibicc/hashmap.c vendored
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@ -18,8 +18,11 @@ static uint64_t fnv_hash(char *s, int len) {
static void rehash(HashMap *map) {
// Compute the size of the new hashmap.
int nkeys = 0;
for (int i = 0; i < map->capacity; i++)
if (map->buckets[i].key && map->buckets[i].key != TOMBSTONE) nkeys++;
for (int i = 0; i < map->capacity; i++) {
if (map->buckets[i].key && map->buckets[i].key != TOMBSTONE) {
nkeys++;
}
}
size_t cap = map->capacity;
while ((nkeys * 100) / cap >= 50) cap = cap * 2;
// Create a new hashmap and copy all key-values.
@ -101,32 +104,3 @@ void hashmap_delete2(HashMap *map, char *key, int keylen) {
HashEntry *ent = get_entry(map, key, keylen);
if (ent) ent->key = TOMBSTONE;
}
#if 0
void hashmap_test(void) {
HashMap *map = calloc(1, sizeof(HashMap));
for (int i = 0; i < 5000; i++)
hashmap_put(map, xasprintf("key %d", i), (void *)(size_t)i);
for (int i = 1000; i < 2000; i++) hashmap_delete(map, xasprintf("key %d", i));
for (int i = 1500; i < 1600; i++)
hashmap_put(map, xasprintf("key %d", i), (void *)(size_t)i);
for (int i = 6000; i < 7000; i++)
hashmap_put(map, xasprintf("key %d", i), (void *)(size_t)i);
for (int i = 0; i < 1000; i++)
assert((size_t)hashmap_get(map, xasprintf("key %d", i)) == i);
for (int i = 1000; i < 1500; i++)
assert(hashmap_get(map, "no such key") == NULL);
for (int i = 1500; i < 1600; i++)
assert((size_t)hashmap_get(map, xasprintf("key %d", i)) == i);
for (int i = 1600; i < 2000; i++)
assert(hashmap_get(map, "no such key") == NULL);
for (int i = 2000; i < 5000; i++)
assert((size_t)hashmap_get(map, xasprintf("key %d", i)) == i);
for (int i = 5000; i < 6000; i++)
assert(hashmap_get(map, "no such key") == NULL);
for (int i = 6000; i < 7000; i++)
hashmap_put(map, xasprintf("key %d", i), (void *)(size_t)i);
assert(hashmap_get(map, "no such key") == NULL);
printf("OK\n");
}
#endif