Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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111 lines
4.8 KiB
111 lines
4.8 KiB
/* |
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* Copyright (c) 2009-2022, Google LLC |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* * Neither the name of Google LLC nor the |
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* names of its contributors may be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL Google LLC BE LIABLE FOR ANY DIRECT, |
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#ifndef UPB_MINI_TABLE_ENCODE_INTERNAL_H_ |
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#define UPB_MINI_TABLE_ENCODE_INTERNAL_H_ |
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#include "upb/base/descriptor_constants.h" |
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#include "upb/mini_table/common.h" |
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// Must be last. |
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#include "upb/port/def.inc" |
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// If the input buffer has at least this many bytes available, the encoder call |
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// is guaranteed to succeed (as long as field number order is maintained). |
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#define kUpb_MtDataEncoder_MinSize 16 |
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typedef struct { |
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char* end; // Limit of the buffer passed as a parameter. |
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// Aliased to internal-only members in .cc. |
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char internal[32]; |
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} upb_MtDataEncoder; |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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// Encodes field/oneof information for a given message. The sequence of calls |
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// should look like: |
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// |
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// upb_MtDataEncoder e; |
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// char buf[256]; |
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// char* ptr = buf; |
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// e.end = ptr + sizeof(buf); |
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// unit64_t msg_mod = ...; // bitwise & of kUpb_MessageModifiers or zero |
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// ptr = upb_MtDataEncoder_StartMessage(&e, ptr, msg_mod); |
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// // Fields *must* be in field number order. |
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// ptr = upb_MtDataEncoder_PutField(&e, ptr, ...); |
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// ptr = upb_MtDataEncoder_PutField(&e, ptr, ...); |
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// ptr = upb_MtDataEncoder_PutField(&e, ptr, ...); |
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// |
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// // If oneofs are present. Oneofs must be encoded after regular fields. |
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// ptr = upb_MiniTable_StartOneof(&e, ptr) |
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// ptr = upb_MiniTable_PutOneofField(&e, ptr, ...); |
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// ptr = upb_MiniTable_PutOneofField(&e, ptr, ...); |
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// |
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// ptr = upb_MiniTable_StartOneof(&e, ptr); |
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// ptr = upb_MiniTable_PutOneofField(&e, ptr, ...); |
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// ptr = upb_MiniTable_PutOneofField(&e, ptr, ...); |
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// |
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// Oneofs must be encoded after all regular fields. |
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char* upb_MtDataEncoder_StartMessage(upb_MtDataEncoder* e, char* ptr, |
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uint64_t msg_mod); |
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char* upb_MtDataEncoder_PutField(upb_MtDataEncoder* e, char* ptr, |
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upb_FieldType type, uint32_t field_num, |
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uint64_t field_mod); |
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char* upb_MtDataEncoder_StartOneof(upb_MtDataEncoder* e, char* ptr); |
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char* upb_MtDataEncoder_PutOneofField(upb_MtDataEncoder* e, char* ptr, |
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uint32_t field_num); |
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// Encodes the set of values for a given enum. The values must be given in |
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// order (after casting to uint32_t), and repeats are not allowed. |
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char* upb_MtDataEncoder_StartEnum(upb_MtDataEncoder* e, char* ptr); |
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char* upb_MtDataEncoder_PutEnumValue(upb_MtDataEncoder* e, char* ptr, |
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uint32_t val); |
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char* upb_MtDataEncoder_EndEnum(upb_MtDataEncoder* e, char* ptr); |
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// Encodes an entire mini descriptor for an extension. |
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char* upb_MtDataEncoder_EncodeExtension(upb_MtDataEncoder* e, char* ptr, |
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upb_FieldType type, uint32_t field_num, |
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uint64_t field_mod); |
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// Encodes an entire mini descriptor for a map. |
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char* upb_MtDataEncoder_EncodeMap(upb_MtDataEncoder* e, char* ptr, |
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upb_FieldType key_type, |
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upb_FieldType value_type, uint64_t key_mod, |
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uint64_t value_mod); |
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// Encodes an entire mini descriptor for a message set. |
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char* upb_MtDataEncoder_EncodeMessageSet(upb_MtDataEncoder* e, char* ptr); |
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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_MINI_TABLE_ENCODE_INTERNAL_H_ */
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