Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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39 lines
1.4 KiB
39 lines
1.4 KiB
5 months ago
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#include "upb/message/merge.h"
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#include "stddef.h"
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#include "upb/mem/arena.h"
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#include "upb/message/message.h"
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#include "upb/mini_table/extension_registry.h"
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#include "upb/mini_table/message.h"
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#include "upb/wire/decode.h"
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#include "upb/wire/encode.h"
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// Must be last.
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#include "upb/port/def.inc"
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bool upb_Message_MergeFrom(upb_Message* dst, const upb_Message* src,
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const upb_MiniTable* mt,
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const upb_ExtensionRegistry* extreg,
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upb_Arena* arena) {
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char* buf = NULL;
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size_t size = 0;
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// This tmp arena is used to hold the bytes for `src` serialized. This bends
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// the typical "no hidden allocations" design of upb, but under a properly
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// optimized implementation this extra allocation would not be necessary and
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// so we don't want to unnecessarily have the bad API or bloat the passed-in
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// arena with this very-short-term allocation.
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upb_Arena* encode_arena = upb_Arena_New();
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upb_EncodeStatus e_status = upb_Encode(src, mt, 0, encode_arena, &buf, &size);
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if (e_status != kUpb_EncodeStatus_Ok) {
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upb_Arena_Free(encode_arena);
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return false;
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}
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upb_DecodeStatus d_status = upb_Decode(buf, size, dst, mt, extreg, 0, arena);
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if (d_status != kUpb_DecodeStatus_Ok) {
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upb_Arena_Free(encode_arena);
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return false;
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}
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upb_Arena_Free(encode_arena);
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return true;
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}
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