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// Protocol Buffers - Google's data interchange format
// Copyright 2023 Google Inc. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd
// -----------------------------------------------------------------------------
// Ruby Message functions. Strictly free of dependencies on
// Ruby interpreter internals.
#include "shared_message.h"
// Support function for Message_Hash. Returns a hash value for the given
// message.
uint64_t shared_Message_Hash(const upb_Message* msg, const upb_MessageDef* m,
uint64_t seed, upb_Status* status) {
upb_Arena* arena = upb_Arena_New();
char* data;
size_t size;
// Hash a deterministically serialized payloads with no unknown fields.
upb_EncodeStatus encode_status = upb_Encode(
msg, upb_MessageDef_MiniTable(m),
kUpb_EncodeOption_SkipUnknown | kUpb_EncodeOption_Deterministic, arena,
&data, &size);
if (encode_status == kUpb_EncodeStatus_Ok) {
uint64_t ret = _upb_Hash(data, size, seed);
upb_Arena_Free(arena);
return ret;
} else {
upb_Arena_Free(arena);
upb_Status_SetErrorMessage(status, "Error calculating hash");
return 0;
}
}
// Support function for Message_Equal
bool shared_Message_Equal(const upb_Message* m1, const upb_Message* m2,
const upb_MessageDef* m, upb_Status* status) {
if (m1 == m2) return true;
size_t size1, size2;
int encode_opts =
kUpb_EncodeOption_SkipUnknown | kUpb_EncodeOption_Deterministic;
upb_Arena* arena_tmp = upb_Arena_New();
const upb_MiniTable* layout = upb_MessageDef_MiniTable(m);
// Compare deterministically serialized payloads with no unknown fields.
char* data1;
char* data2;
upb_EncodeStatus status1 =
upb_Encode(m1, layout, encode_opts, arena_tmp, &data1, &size1);
upb_EncodeStatus status2 =
upb_Encode(m2, layout, encode_opts, arena_tmp, &data2, &size2);
if (status1 == kUpb_EncodeStatus_Ok && status2 == kUpb_EncodeStatus_Ok) {
bool ret = (size1 == size2) && (memcmp(data1, data2, size1) == 0);
upb_Arena_Free(arena_tmp);
return ret;
} else {
upb_Arena_Free(arena_tmp);
upb_Status_SetErrorMessage(status, "Error comparing messages");
}
}
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