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add hashmap

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sam 2024-07-28 00:42:48 +12:00
parent 986006449d
commit 112d98edcd
1 changed files with 244 additions and 146 deletions
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114
slibs.h
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@ -117,6 +117,107 @@
(name) != sl_vec_end(vec); \ (name) != sl_vec_end(vec); \
++(name) ++(name)
// TODO: Linked List
// #define sl_list(name, type) \
// struct name \
// { \
// type *data; \
// struct name *next; \
// }
// #define sl_list_append(list, value) \
// { \
// sl_auto(curr, list);\
// } \
// Hashmap
#define SL_MAX_HASH_ENTRIES 512
int sl_hash(const char *str);
#define sl_map(name, valuetype) \
typedef valuetype sl_##name##_type; \
\
typedef struct sl_##name##_entry \
{ \
const char *key; \
sl_##name##_type value; \
} sl_##name##_entry; \
\
typedef sl_vec(sl_##name##_entry) sl_##name##_entry_vec; \
\
typedef struct sl_##name##_map \
{ \
sl_##name##_entry_vec *entries[SL_MAX_HASH_ENTRIES]; \
} sl_##name##_map; \
\
sl_##name##_map name = {0};
#define sl_map_set(map, key_, val) \
{ \
int hash = sl_hash(key_); \
sl_##map##_entry_vec *entry = map.entries[hash]; \
if (!entry) \
{ \
entry = calloc(1, sizeof(sl_##map##_entry_vec)); \
map.entries[hash] = entry; \
} \
int found = 0; \
for (sl_vec_it(el, *entry)) \
{ \
if (strcmp(el->key, key_) == 0) \
{ \
el->value = val; \
found = 1; \
break; \
} \
} \
if (!found) \
{ \
sl_##map##_entry new_entry = {key_, val}; \
sl_vec_push(*entry, new_entry) \
} \
}
#define sl_map_get(map, key_) \
({ \
sl_##map##_entry_vec *entry = map.entries[sl_hash(key_)]; \
sl_##map##_type* value = NULL; \
\
if (entry) \
{ \
for (sl_vec_it(el, *entry)) \
{ \
if (strcmp(el->key, key_) == 0) \
{ \
value = &el->value; \
break; \
} \
} \
} \
\
value; \
})
#ifdef SL_IMPLEMENTATION
int sl_hash(const char *str)
{
uint32_t seed = 0;
size_t len = strlen(str);
for (size_t i = 0; i < len && i < sizeof(uint32_t); i++)
{
seed <<= 8;
seed |= str[i];
}
srand(seed);
return rand() % SL_MAX_HASH_ENTRIES;
}
#endif
// String // String
typedef sl_vec(char) sl_string; typedef sl_vec(char) sl_string;
@ -174,8 +275,7 @@ void sl_append_c_str(sl_string *sl_str, const char *c_str)
#define sl_ptr_make(raw_ptr) \ #define sl_ptr_make(raw_ptr) \
{ \ { \
raw_ptr, 1 \ raw_ptr, 1}
}
#define sl_ptr_release(smart_ptr) \ #define sl_ptr_release(smart_ptr) \
({ \ ({ \
@ -209,17 +309,14 @@ void sl_write_file(const char *filename, const sl_string buffer);
FILE *sl_open_file(const char *filename, const char *mode) FILE *sl_open_file(const char *filename, const char *mode)
{ {
FILE *file = fopen(filename, mode); FILE *file = fopen(filename, mode);
if (!file)
{
fprintf(stderr, "Error: could not open file %s\n", filename);
}
return file; return file;
} }
sl_string *sl_read_file(const char *filename) sl_string *sl_read_file(const char *filename)
{ {
FILE *file = sl_open_file(filename, "r"); FILE *file = sl_open_file(filename, "r");
if(!file) return NULL; if (!file)
return NULL;
fseek(file, 0, SEEK_END); fseek(file, 0, SEEK_END);
size_t file_size = ftell(file); size_t file_size = ftell(file);
@ -239,7 +336,8 @@ sl_string *sl_read_file(const char *filename)
void sl_write_file(const char *filename, sl_string buffer) void sl_write_file(const char *filename, sl_string buffer)
{ {
FILE *file = sl_open_file(filename, "w"); FILE *file = sl_open_file(filename, "w");
if(!file) return; if (!file)
return;
fputs(sl_c_str(buffer), file); fputs(sl_c_str(buffer), file);
fclose(file); fclose(file);