4 #include "upb/table.int.h"
6 #include "upb/port_def.inc"
8 #define VOIDPTR_AT(msg, ofs) (void*)((char*)msg + (int)ofs)
10 /* Internal members of a upb_msg. We can change this without breaking binary
11 * compatibility. We put these before the user's data. The user's upb_msg*
12 * points after the upb_msg_internal. */
14 /* Used when a message is not extendable. */
21 /* Used when a message is extendable. */
23 upb_inttable *extdict;
24 upb_msg_internal base;
25 } upb_msg_internal_withext;
27 static int upb_msg_internalsize(const upb_msglayout *l) {
28 return sizeof(upb_msg_internal) - l->extendable * sizeof(void *);
31 static size_t upb_msg_sizeof(const upb_msglayout *l) {
32 return l->size + upb_msg_internalsize(l);
35 static upb_msg_internal *upb_msg_getinternal(upb_msg *msg) {
36 return VOIDPTR_AT(msg, -sizeof(upb_msg_internal));
39 static const upb_msg_internal *upb_msg_getinternal_const(const upb_msg *msg) {
40 return VOIDPTR_AT(msg, -sizeof(upb_msg_internal));
43 static upb_msg_internal_withext *upb_msg_getinternalwithext(
44 upb_msg *msg, const upb_msglayout *l) {
45 UPB_ASSERT(l->extendable);
46 return VOIDPTR_AT(msg, -sizeof(upb_msg_internal_withext));
49 upb_msg *upb_msg_new(const upb_msglayout *l, upb_arena *a) {
50 upb_alloc *alloc = upb_arena_alloc(a);
51 void *mem = upb_malloc(alloc, upb_msg_sizeof(l));
59 msg = VOIDPTR_AT(mem, upb_msg_internalsize(l));
61 /* Initialize normal members. */
62 memset(msg, 0, l->size);
64 /* Initialize internal members. */
65 in = upb_msg_getinternal(msg);
71 upb_msg_getinternalwithext(msg, l)->extdict = NULL;
77 upb_array *upb_array_new(upb_arena *a) {
78 upb_array *ret = upb_arena_malloc(a, sizeof(upb_array));
91 void upb_msg_addunknown(upb_msg *msg, const char *data, size_t len,
93 upb_msg_internal *in = upb_msg_getinternal(msg);
94 if (len > in->unknown_size - in->unknown_len) {
95 upb_alloc *alloc = upb_arena_alloc(arena);
96 size_t need = in->unknown_size + len;
97 size_t newsize = UPB_MAX(in->unknown_size * 2, need);
98 in->unknown = upb_realloc(alloc, in->unknown, in->unknown_size, newsize);
99 in->unknown_size = newsize;
101 memcpy(in->unknown + in->unknown_len, data, len);
102 in->unknown_len += len;
105 const char *upb_msg_getunknown(const upb_msg *msg, size_t *len) {
106 const upb_msg_internal* in = upb_msg_getinternal_const(msg);
107 *len = in->unknown_len;