Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
91 lines
2.5 KiB
91 lines
2.5 KiB
/* |
|
** upb::pb::Encoder (upb_pb_encoder) |
|
** |
|
** Implements a set of upb_handlers that write protobuf data to the binary wire |
|
** format. |
|
** |
|
** This encoder implementation does not have any access to any out-of-band or |
|
** precomputed lengths for submessages, so it must buffer submessages internally |
|
** before it can emit the first byte. |
|
*/ |
|
|
|
#ifndef UPB_ENCODER_H_ |
|
#define UPB_ENCODER_H_ |
|
|
|
#include "upb/sink.h" |
|
|
|
#ifdef __cplusplus |
|
namespace upb { |
|
namespace pb { |
|
class Encoder; |
|
} /* namespace pb */ |
|
} /* namespace upb */ |
|
#endif |
|
|
|
UPB_DECLARE_TYPE(upb::pb::Encoder, upb_pb_encoder) |
|
|
|
#define UPB_PBENCODER_MAX_NESTING 100 |
|
|
|
/* upb::pb::Encoder ***********************************************************/ |
|
|
|
/* Preallocation hint: decoder won't allocate more bytes than this when first |
|
* constructed. This hint may be an overestimate for some build configurations. |
|
* But if the decoder library is upgraded without recompiling the application, |
|
* it may be an underestimate. */ |
|
#define UPB_PB_ENCODER_SIZE 768 |
|
|
|
#ifdef __cplusplus |
|
|
|
class upb::pb::Encoder { |
|
public: |
|
/* Creates a new encoder in the given environment. The Handlers must have |
|
* come from NewHandlers() below. */ |
|
static Encoder* Create(Environment* env, const Handlers* handlers, |
|
BytesSink* output); |
|
|
|
/* The input to the encoder. */ |
|
Sink* input(); |
|
|
|
/* Creates a new set of handlers for this MessageDef. */ |
|
static reffed_ptr<const Handlers> NewHandlers(const MessageDef* msg); |
|
|
|
static const size_t kSize = UPB_PB_ENCODER_SIZE; |
|
|
|
private: |
|
UPB_DISALLOW_POD_OPS(Encoder, upb::pb::Encoder) |
|
}; |
|
|
|
#endif |
|
|
|
UPB_BEGIN_EXTERN_C |
|
|
|
const upb_handlers *upb_pb_encoder_newhandlers(const upb_msgdef *m, |
|
const void *owner); |
|
upb_sink *upb_pb_encoder_input(upb_pb_encoder *p); |
|
upb_pb_encoder* upb_pb_encoder_create(upb_env* e, const upb_handlers* h, |
|
upb_bytessink* output); |
|
|
|
UPB_END_EXTERN_C |
|
|
|
#ifdef __cplusplus |
|
|
|
namespace upb { |
|
namespace pb { |
|
inline Encoder* Encoder::Create(Environment* env, const Handlers* handlers, |
|
BytesSink* output) { |
|
return upb_pb_encoder_create(env, handlers, output); |
|
} |
|
inline Sink* Encoder::input() { |
|
return upb_pb_encoder_input(this); |
|
} |
|
inline reffed_ptr<const Handlers> Encoder::NewHandlers( |
|
const upb::MessageDef *md) { |
|
const Handlers* h = upb_pb_encoder_newhandlers(md, &h); |
|
return reffed_ptr<const Handlers>(h, &h); |
|
} |
|
} /* namespace pb */ |
|
} /* namespace upb */ |
|
|
|
#endif |
|
|
|
#endif /* UPB_ENCODER_H_ */
|
|
|