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/*
** upb::descriptor::Reader (upb_descreader)
**
** Provides a way of building upb::Defs from data in descriptor.proto format.
*/
#ifndef UPB_DESCRIPTOR_H
#define UPB_DESCRIPTOR_H
#include "upb/sink.h"
#ifdef __cplusplus
namespace upb {
namespace descriptor {
class Reader;
} /* namespace descriptor */
} /* namespace upb */
#endif
UPB_DECLARE_TYPE(upb::descriptor::Reader, upb_descreader)
#ifdef __cplusplus
/* Class that receives descriptor data according to the descriptor.proto schema
* and use it to build upb::Defs corresponding to that schema. */
class upb::descriptor::Reader {
public:
/* These handlers must have come from NewHandlers() and must outlive the
* Reader.
*
* TODO: generate the handlers statically (like we do with the
* descriptor.proto defs) so that there is no need to pass this parameter (or
* to build/memory-manage the handlers at runtime at all). Unfortunately this
* is a bit tricky to implement for Handlers, but necessary to simplify this
* interface. */
static Reader* Create(Environment* env, const Handlers* handlers);
/* The reader's input; this is where descriptor.proto data should be sent. */
Sink* input();
/* Use to get the FileDefs that have been parsed. */
size_t file_count() const;
FileDef* file(size_t i) const;
/* Builds and returns handlers for the reader, owned by "owner." */
static Handlers* NewHandlers(const void* owner);
private:
UPB_DISALLOW_POD_OPS(Reader, upb::descriptor::Reader)
};
#endif
UPB_BEGIN_EXTERN_C
/* C API. */
upb_descreader *upb_descreader_create(upb_env *e, const upb_handlers *h);
upb_sink *upb_descreader_input(upb_descreader *r);
size_t upb_descreader_filecount(const upb_descreader *r);
upb_filedef *upb_descreader_file(const upb_descreader *r, size_t i);
const upb_handlers *upb_descreader_newhandlers(const void *owner);
UPB_END_EXTERN_C
#ifdef __cplusplus
/* C++ implementation details. ************************************************/
namespace upb {
namespace descriptor {
inline Reader* Reader::Create(Environment* e, const Handlers *h) {
return upb_descreader_create(e, h);
}
inline Sink* Reader::input() { return upb_descreader_input(this); }
inline size_t Reader::file_count() const {
return upb_descreader_filecount(this);
}
inline FileDef* Reader::file(size_t i) const {
return upb_descreader_file(this, i);
}
} /* namespace descriptor */
} /* namespace upb */
#endif
#endif /* UPB_DESCRIPTOR_H */
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