blob: 1e786a829e975b46f7423bdd3c2a3e3c71cb4ca8 [file] [log] [blame] [edit]
#include "upb/message/merge.h"
#include "stddef.h"
#include "upb/mem/arena.h"
#include "upb/message/message.h"
#include "upb/mini_table/extension_registry.h"
#include "upb/mini_table/message.h"
#include "upb/wire/decode.h"
#include "upb/wire/encode.h"
// Must be last.
#include "upb/port/def.inc"
bool upb_Message_MergeFrom(upb_Message* dst, const upb_Message* src,
const upb_MiniTable* mt,
const upb_ExtensionRegistry* extreg,
upb_Arena* arena) {
char* buf = NULL;
size_t size = 0;
// This tmp arena is used to hold the bytes for `src` serialized. This bends
// the typical "no hidden allocations" design of upb, but under a properly
// optimized implementation this extra allocation would not be necessary and
// so we don't want to unnecessarily have the bad API or bloat the passed-in
// arena with this very-short-term allocation.
upb_Arena* encode_arena = upb_Arena_New();
upb_EncodeStatus e_status = upb_Encode(src, mt, 0, encode_arena, &buf, &size);
if (e_status != kUpb_EncodeStatus_Ok) {
upb_Arena_Free(encode_arena);
return false;
}
upb_DecodeStatus d_status = upb_Decode(buf, size, dst, mt, extreg, 0, arena);
if (d_status != kUpb_DecodeStatus_Ok) {
upb_Arena_Free(encode_arena);
return false;
}
upb_Arena_Free(encode_arena);
return true;
}