Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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83 lines
2.6 KiB
83 lines
2.6 KiB
// 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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// upb_Encode: parsing from a upb_Message using a upb_MiniTable. |
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#ifndef UPB_WIRE_ENCODE_H_ |
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#define UPB_WIRE_ENCODE_H_ |
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#include <stddef.h> |
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#include <stdint.h> |
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#include "upb/mem/arena.h" |
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#include "upb/message/message.h" |
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#include "upb/mini_table/message.h" |
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// Must be last. |
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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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enum { |
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/* If set, the results of serializing will be deterministic across all |
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* instances of this binary. There are no guarantees across different |
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* binary builds. |
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* |
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* If your proto contains maps, the encoder will need to malloc()/free() |
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* memory during encode. */ |
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kUpb_EncodeOption_Deterministic = 1, |
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// When set, unknown fields are not printed. |
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kUpb_EncodeOption_SkipUnknown = 2, |
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// When set, the encode will fail if any required fields are missing. |
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kUpb_EncodeOption_CheckRequired = 4, |
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}; |
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typedef enum { |
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kUpb_EncodeStatus_Ok = 0, |
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kUpb_EncodeStatus_OutOfMemory = 1, // Arena alloc failed |
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kUpb_EncodeStatus_MaxDepthExceeded = 2, |
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// kUpb_EncodeOption_CheckRequired failed but the parse otherwise succeeded. |
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kUpb_EncodeStatus_MissingRequired = 3, |
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} upb_EncodeStatus; |
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UPB_INLINE uint32_t upb_EncodeOptions_MaxDepth(uint16_t depth) { |
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return (uint32_t)depth << 16; |
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} |
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UPB_INLINE uint16_t upb_EncodeOptions_GetMaxDepth(uint32_t options) { |
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return options >> 16; |
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} |
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// Enforce an upper bound on recursion depth. |
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UPB_INLINE int upb_Encode_LimitDepth(uint32_t encode_options, uint32_t limit) { |
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uint32_t max_depth = upb_EncodeOptions_GetMaxDepth(encode_options); |
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if (max_depth > limit) max_depth = limit; |
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return upb_EncodeOptions_MaxDepth(max_depth) | (encode_options & 0xffff); |
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} |
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UPB_API upb_EncodeStatus upb_Encode(const upb_Message* msg, |
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const upb_MiniTable* l, int options, |
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upb_Arena* arena, char** buf, size_t* size); |
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// Encodes the message prepended by a varint of the serialized length. |
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UPB_API upb_EncodeStatus upb_EncodeLengthPrefixed(const upb_Message* msg, |
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const upb_MiniTable* l, |
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int options, upb_Arena* arena, |
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char** buf, size_t* size); |
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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_WIRE_ENCODE_H_ */
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