| /* |
| * Copyright (c) 2009-2021, Google LLC |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * * Neither the name of Google LLC nor the |
| * names of its contributors may be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL Google LLC BE LIABLE FOR ANY DIRECT, |
| * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef UPB_UTIL_COMPARE_H_ |
| #define UPB_UTIL_COMPARE_H_ |
| |
| #include <stddef.h> |
| |
| #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_Message_UnknownFieldsAreEqual(const char* buf1, |
| size_t size1, |
| const char* buf2, |
| size_t size2, |
| int max_depth); |
| |
| #ifdef __cplusplus |
| } /* extern "C" */ |
| #endif |
| |
| #endif /* UPB_UTIL_COMPARE_H_ */ |