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#include "upb/msg.h"
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#include "upb/table.int.h"
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#include "upb/port_def.inc"
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/** upb_msg *******************************************************************/
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static const char _upb_fieldtype_to_sizelg2[12] = {
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0,
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0, /* UPB_TYPE_BOOL */
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2, /* UPB_TYPE_FLOAT */
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2, /* UPB_TYPE_INT32 */
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2, /* UPB_TYPE_UINT32 */
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2, /* UPB_TYPE_ENUM */
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UPB_SIZE(2, 3), /* UPB_TYPE_MESSAGE */
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3, /* UPB_TYPE_DOUBLE */
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3, /* UPB_TYPE_INT64 */
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3, /* UPB_TYPE_UINT64 */
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UPB_SIZE(3, 4), /* UPB_TYPE_STRING */
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UPB_SIZE(3, 4), /* UPB_TYPE_BYTES */
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};
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static const size_t overhead = sizeof(upb_msg_internal);
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static const upb_msg_internal *upb_msg_getinternal_const(const upb_msg *msg) {
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ptrdiff_t size = sizeof(upb_msg_internal);
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return UPB_PTR_AT(msg, -size, upb_msg_internal);
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}
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upb_msg *_upb_msg_new(const upb_msglayout *l, upb_arena *a) {
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return _upb_msg_new_inl(l, a);
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}
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void _upb_msg_clear(upb_msg *msg, const upb_msglayout *l) {
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void *mem = UPB_PTR_AT(msg, -sizeof(upb_msg_internal), char);
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memset(mem, 0, upb_msg_sizeof(l));
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}
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static uintptr_t tag_arrptr(void* ptr, int elem_size_lg2) {
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UPB_ASSERT(elem_size_lg2 <= 4);
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return (uintptr_t)ptr | elem_size_lg2;
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}
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bool _upb_msg_addunknown(upb_msg *msg, const char *data, size_t len,
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upb_arena *arena) {
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upb_msg_internal *in = upb_msg_getinternal(msg);
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if (!in->unknown) {
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size_t size = 128;
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while (size < len) size *= 2;
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in->unknown = upb_arena_malloc(arena, size + overhead);
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if (!in->unknown) return false;
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in->unknown->size = size;
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in->unknown->len = 0;
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} else if (in->unknown->size - in->unknown->len < len) {
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size_t need = in->unknown->len + len;
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size_t size = in->unknown->size;;
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while (size < need) size *= 2;
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in->unknown = upb_arena_realloc(
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arena, in->unknown, in->unknown->size + overhead, size + overhead);
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if (!in->unknown) return false;
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}
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memcpy(UPB_PTR_AT(in->unknown + 1, in->unknown->len, char), data, len);
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in->unknown->len += len;
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return true;
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}
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void _upb_msg_discardunknown_shallow(upb_msg *msg) {
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upb_msg_internal *in = upb_msg_getinternal(msg);
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if (in->unknown) {
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in->unknown->len = 0;
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}
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}
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const char *upb_msg_getunknown(const upb_msg *msg, size_t *len) {
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const upb_msg_internal *in = upb_msg_getinternal_const(msg);
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if (in->unknown) {
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*len = in->unknown->len;
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return (char*)(in->unknown + 1);
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} else {
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*len = 0;
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return NULL;
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}
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}
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/** upb_array *****************************************************************/
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upb_array *_upb_array_new(upb_arena *a, upb_fieldtype_t type) {
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upb_array *arr = upb_arena_malloc(a, sizeof(upb_array));
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if (!arr) {
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return NULL;
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}
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arr->data = tag_arrptr(NULL, _upb_fieldtype_to_sizelg2[type]);
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arr->len = 0;
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arr->size = 0;
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return arr;
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}
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bool _upb_array_realloc(upb_array *arr, size_t min_size, upb_arena *arena) {
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size_t new_size = UPB_MAX(arr->size, 4);
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int elem_size_lg2 = arr->data & 7;
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size_t old_bytes = arr->size << elem_size_lg2;
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size_t new_bytes;
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void* ptr = _upb_array_ptr(arr);
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/* Log2 ceiling of size. */
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while (new_size < min_size) new_size *= 2;
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new_bytes = new_size << elem_size_lg2;
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ptr = upb_arena_realloc(arena, ptr, old_bytes, new_bytes);
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if (!ptr) {
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return false;
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}
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arr->data = tag_arrptr(ptr, elem_size_lg2);
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arr->size = new_size;
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return true;
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}
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static upb_array *getorcreate_array(upb_array **arr_ptr, upb_fieldtype_t type,
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upb_arena *arena) {
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upb_array *arr = *arr_ptr;
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if (!arr) {
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arr = _upb_array_new(arena, type);
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if (!arr) return NULL;
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*arr_ptr = arr;
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}
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return arr;
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}
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void *_upb_array_resize_fallback(upb_array **arr_ptr, size_t size,
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upb_fieldtype_t type, upb_arena *arena) {
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upb_array *arr = getorcreate_array(arr_ptr, type, arena);
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return arr && _upb_array_resize(arr, size, arena) ? _upb_array_ptr(arr) : NULL;
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}
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bool _upb_array_append_fallback(upb_array **arr_ptr, const void *value,
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upb_fieldtype_t type, upb_arena *arena) {
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upb_array *arr = getorcreate_array(arr_ptr, type, arena);
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size_t elem = arr->len;
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int lg2 = _upb_fieldtype_to_sizelg2[type];
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char *data;
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if (!arr || !_upb_array_resize(arr, elem + 1, arena)) return false;
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data = _upb_array_ptr(arr);
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memcpy(data + (elem << lg2), value, 1 << lg2);
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return true;
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}
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/** upb_map *******************************************************************/
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upb_map *_upb_map_new(upb_arena *a, size_t key_size, size_t value_size) {
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upb_map *map = upb_arena_malloc(a, sizeof(upb_map));
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if (!map) {
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return NULL;
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}
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upb_strtable_init2(&map->table, UPB_CTYPE_INT32, upb_arena_alloc(a));
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map->key_size = key_size;
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map->val_size = value_size;
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return map;
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}
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