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// Protocol Buffers - Google's data interchange format
// Copyright 2023 Google LLC. 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
#ifndef UPB_MESSAGE_INTERNAL_COMPARE_UNKNOWN_H_
#define UPB_MESSAGE_INTERNAL_COMPARE_UNKNOWN_H_
#include <stddef.h>
// Must be last.
#include "upb/port/def.inc"
#ifdef __cplusplus
extern "C" {
#endif
// Returns true if unknown fields from the two messages are equal when sorted
// and varints are made canonical.
//
// This function is discouraged, as the comparison is inherently lossy without
// schema data:
//
// 1. We don't know whether delimited fields are sub-messages. Unknown
// sub-messages will therefore not have their fields sorted and varints
// canonicalized.
// 2. We don't know about oneof/non-repeated fields, which should semantically
// discard every value except the last.
typedef enum {
kUpb_UnknownCompareResult_Equal = 0,
kUpb_UnknownCompareResult_NotEqual = 1,
kUpb_UnknownCompareResult_OutOfMemory = 2,
kUpb_UnknownCompareResult_MaxDepthExceeded = 3,
} upb_UnknownCompareResult;
upb_UnknownCompareResult UPB_PRIVATE(_upb_Message_UnknownFieldsAreEqual)(
const char* buf1, size_t size1, const char* buf2, size_t size2,
int max_depth);
#ifdef __cplusplus
} /* extern "C" */
#endif
#include "upb/port/undef.inc"
#endif /* UPB_MESSAGE_INTERNAL_COMPARE_UNKNOWN_H_ */