1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
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
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
/*
* Copyright (c) 2009-2021, Google LLC
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Google LLC nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL Google LLC BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <string.h>
#include "upb/collections/array_internal.h"
// Must be last.
#include "upb/port/def.inc"
const char _upb_Array_CTypeSizeLg2Table[] = {
[kUpb_CType_Bool] = 0,
[kUpb_CType_Float] = 2,
[kUpb_CType_Int32] = 2,
[kUpb_CType_UInt32] = 2,
[kUpb_CType_Enum] = 2,
[kUpb_CType_Message] = UPB_SIZE(2, 3),
[kUpb_CType_Double] = 3,
[kUpb_CType_Int64] = 3,
[kUpb_CType_UInt64] = 3,
[kUpb_CType_String] = UPB_SIZE(3, 4),
[kUpb_CType_Bytes] = UPB_SIZE(3, 4),
};
upb_Array* upb_Array_New(upb_Arena* a, upb_CType type) {
return _upb_Array_New(a, 4, _upb_Array_CTypeSizeLg2(type));
}
const void* upb_Array_DataPtr(const upb_Array* arr) {
return _upb_array_ptr((upb_Array*)arr);
}
void* upb_Array_MutableDataPtr(upb_Array* arr) { return _upb_array_ptr(arr); }
size_t upb_Array_Size(const upb_Array* arr) { return arr->size; }
upb_MessageValue upb_Array_Get(const upb_Array* arr, size_t i) {
upb_MessageValue ret;
const char* data = _upb_array_constptr(arr);
int lg2 = arr->data & 7;
UPB_ASSERT(i < arr->size);
memcpy(&ret, data + (i << lg2), 1 << lg2);
return ret;
}
void upb_Array_Set(upb_Array* arr, size_t i, upb_MessageValue val) {
char* data = _upb_array_ptr(arr);
int lg2 = arr->data & 7;
UPB_ASSERT(i < arr->size);
memcpy(data + (i << lg2), &val, 1 << lg2);
}
bool upb_Array_Append(upb_Array* arr, upb_MessageValue val, upb_Arena* arena) {
UPB_ASSERT(arena);
if (!upb_Array_Resize(arr, arr->size + 1, arena)) {
return false;
}
upb_Array_Set(arr, arr->size - 1, val);
return true;
}
void upb_Array_Move(upb_Array* arr, size_t dst_idx, size_t src_idx,
size_t count) {
const int lg2 = arr->data & 7;
char* data = _upb_array_ptr(arr);
memmove(&data[dst_idx << lg2], &data[src_idx << lg2], count << lg2);
}
bool upb_Array_Insert(upb_Array* arr, size_t i, size_t count,
upb_Arena* arena) {
UPB_ASSERT(arena);
UPB_ASSERT(i <= arr->size);
UPB_ASSERT(count + arr->size >= count);
const size_t oldsize = arr->size;
if (!upb_Array_Resize(arr, arr->size + count, arena)) {
return false;
}
upb_Array_Move(arr, i + count, i, oldsize - i);
return true;
}
/*
* i end arr->size
* |------------|XXXXXXXX|--------|
*/
void upb_Array_Delete(upb_Array* arr, size_t i, size_t count) {
const size_t end = i + count;
UPB_ASSERT(i <= end);
UPB_ASSERT(end <= arr->size);
upb_Array_Move(arr, i, end, arr->size - end);
arr->size -= count;
}
bool upb_Array_Resize(upb_Array* arr, size_t size, upb_Arena* arena) {
const size_t oldsize = arr->size;
if (UPB_UNLIKELY(!_upb_Array_ResizeUninitialized(arr, size, arena))) {
return false;
}
const size_t newsize = arr->size;
if (newsize > oldsize) {
const int lg2 = arr->data & 7;
char* data = _upb_array_ptr(arr);
memset(data + (oldsize << lg2), 0, (newsize - oldsize) << lg2);
}
return true;
}
// EVERYTHING BELOW THIS LINE IS INTERNAL - DO NOT USE /////////////////////////
bool _upb_array_realloc(upb_Array* arr, size_t min_capacity, upb_Arena* arena) {
size_t new_capacity = UPB_MAX(arr->capacity, 4);
int elem_size_lg2 = arr->data & 7;
size_t old_bytes = arr->capacity << elem_size_lg2;
size_t new_bytes;
void* ptr = _upb_array_ptr(arr);
// Log2 ceiling of size.
while (new_capacity < min_capacity) new_capacity *= 2;
new_bytes = new_capacity << elem_size_lg2;
ptr = upb_Arena_Realloc(arena, ptr, old_bytes, new_bytes);
if (!ptr) return false;
arr->data = _upb_tag_arrptr(ptr, elem_size_lg2);
arr->capacity = new_capacity;
return true;
}
|
