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// Protocol Buffers - Google's data interchange format
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// Copyright 2023 Google LLC. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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#ifndef UPB_MESSAGE_INTERNAL_COMPARE_UNKNOWN_H_
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#define UPB_MESSAGE_INTERNAL_COMPARE_UNKNOWN_H_
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#include <stddef.h>
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// Must be last.
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#include "upb/message/message.h"
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#include "upb/port/def.inc"
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#ifdef __cplusplus
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extern "C" {
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#endif
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// Returns true if unknown fields from the two messages are equal when sorted
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// and varints are made canonical.
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//
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// This function is discouraged, as the comparison is inherently lossy without
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// schema data:
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//
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// 1. We don't know whether delimited fields are sub-messages. Unknown
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// sub-messages will therefore not have their fields sorted and varints
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// canonicalized.
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// 2. We don't know about oneof/non-repeated fields, which should semantically
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// discard every value except the last.
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typedef enum {
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kUpb_UnknownCompareResult_Equal = 0,
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kUpb_UnknownCompareResult_NotEqual = 1,
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kUpb_UnknownCompareResult_OutOfMemory = 2,
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kUpb_UnknownCompareResult_MaxDepthExceeded = 3,
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} upb_UnknownCompareResult;
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upb_UnknownCompareResult UPB_PRIVATE(_upb_Message_UnknownFieldsAreEqual)(
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const upb_Message* msg1, const upb_Message* msg2, int max_depth);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#include "upb/port/undef.inc"
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#endif /* UPB_MESSAGE_INTERNAL_COMPARE_UNKNOWN_H_ */
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