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#include <stdio.h>
#include <stdlib.h>
#import "runtime.h"
#import "runtime-private.h"
struct objc_sparsearray*
objc_sparsearray_new(uint_fast8_t index_size)
objc_sparsearray_new(uint8_t index_size)
{
struct objc_sparsearray *sparsearray;
if ((sparsearray = calloc(1, sizeof(*sparsearray))) == NULL)
OBJC_ERROR("Failed to allocate memory for sparse array!");
if ((sparsearray->data = calloc(1, sizeof(*sparsearray->data))) == NULL)
OBJC_ERROR("Failed to allocate memory for sparse array!");
sparsearray->index_size = index_size;
return sparsearray;
}
void*
objc_sparsearray_get(struct objc_sparsearray *sparsearray, uintptr_t idx)
{
struct objc_sparsearray_data *iter = sparsearray->data;
uint_fast8_t i;
uint8_t i;
for (i = 0; i < sparsearray->index_size - 1; i++) {
uintptr_t j =
(idx >> ((sparsearray->index_size - i - 1) * 8)) & 0xFF;
if ((iter = iter->next[j]) == NULL)
return NULL;
}
return iter->next[idx & 0xFF];
}
void
objc_sparsearray_set(struct objc_sparsearray *sparsearray, uintptr_t idx,
void *value)
{
struct objc_sparsearray_data *iter = sparsearray->data;
uint_fast8_t i;
uint8_t i;
for (i = 0; i < sparsearray->index_size - 1; i++) {
uintptr_t j =
(idx >> ((sparsearray->index_size - i - 1) * 8)) & 0xFF;
if (iter->next[j] == NULL)
if ((iter->next[j] = calloc(1,
sizeof(struct objc_sparsearray_data))) == NULL)
OBJC_ERROR("Failed to allocate memory for "
"sparse array!");
iter = iter->next[j];
}
iter->next[idx & 0xFF] = value;
}
static void
free_sparsearray_data(struct objc_sparsearray_data *data, uint_fast8_t depth)
free_sparsearray_data(struct objc_sparsearray_data *data, uint8_t depth)
{
uint_fast16_t i;
uint16_t i;
if (data == NULL || depth == 0)
return;
for (i = 0; i < 256; i++)
free_sparsearray_data(data->next[i], depth - 1);
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