20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
|
#include <stdio.h>
#include <stdlib.h>
#import "ObjFW_RT.h"
#import "private.h"
struct objc_sparsearray *
objc_sparsearray_new(uint8_t index_size)
objc_sparsearray_new(uint8_t indexSize)
{
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;
sparsearray->indexSize = indexSize;
return sparsearray;
}
void *
objc_sparsearray_get(struct objc_sparsearray *sparsearray, uintptr_t idx)
{
struct objc_sparsearray_data *iter = sparsearray->data;
for (uint8_t i = 0; i < sparsearray->index_size - 1; i++) {
for (uint8_t i = 0; i < sparsearray->indexSize - 1; i++) {
uintptr_t j =
(idx >> ((sparsearray->index_size - i - 1) * 8)) & 0xFF;
(idx >> ((sparsearray->indexSize - 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;
for (uint8_t i = 0; i < sparsearray->index_size - 1; i++) {
for (uint8_t i = 0; i < sparsearray->indexSize - 1; i++) {
uintptr_t j =
(idx >> ((sparsearray->index_size - i - 1) * 8)) & 0xFF;
(idx >> ((sparsearray->indexSize - 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, uint8_t depth)
freeSparsearrayData(struct objc_sparsearray_data *data, uint8_t depth)
{
if (data == NULL || depth == 0)
return;
for (uint_fast16_t i = 0; i < 256; i++)
free_sparsearray_data(data->next[i], depth - 1);
freeSparsearrayData(data->next[i], depth - 1);
free(data);
}
void
objc_sparsearray_free(struct objc_sparsearray *sparsearray)
{
free_sparsearray_data(sparsearray->data, sparsearray->index_size);
freeSparsearrayData(sparsearray->data, sparsearray->indexSize);
free(sparsearray);
}
|