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/*
* upb - a minimalist implementation of protocol buffers.
*
* Copyright (c) 2014 Google Inc. See LICENSE for details.
* Author: Josh Haberman <jhaberman@gmail.com>
*
* upb::json::TypedPrinter allows you to create handlers that emit JSON
* according to a specific protobuf schema.
*/
#ifndef UPB_JSON_TYPED_PRINTER_H_
#define UPB_JSON_TYPED_PRINTER_H_
#include "upb/sink.h"
#ifdef __cplusplus
namespace upb {
namespace json {
class TypedPrinter;
} // namespace json
} // namespace upb
#endif
UPB_DECLARE_TYPE(upb::json::TypedPrinter, upb_json_typedprinter);
/* upb::json::TypedPrinter ****************************************************/
// Prints an incoming stream of data to a BytesSink in JSON format.
UPB_DEFINE_CLASS0(upb::json::TypedPrinter,
public:
TypedPrinter(const upb::Handlers* handlers);
~TypedPrinter();
// Resets the state of the printer, so that it will expect to begin a new
// document.
void Reset();
// Resets the output pointer which will serve as our closure. Implies
// Reset().
void ResetOutput(BytesSink* output);
// The input to the printer.
Sink* input();
// Returns handlers for printing according to the specified schema.
static reffed_ptr<const Handlers> NewHandlers(const upb::MessageDef* md);
,
UPB_DEFINE_STRUCT0(upb_json_typedprinter,
upb_sink input_;
// Pointer to yajl_gen; void* here so we don't have to include YAJL headers.
void *yajl_gen_;
void *subc_;
upb_bytessink *output_;
// We track the depth so that we know when to emit startstr/endstr on the
// output.
int depth_;
));
UPB_BEGIN_EXTERN_C // {
// Native C API.
void upb_json_typedprinter_init(upb_json_typedprinter *p,
const upb_handlers *h);
void upb_json_typedprinter_uninit(upb_json_typedprinter *p);
void upb_json_typedprinter_reset(upb_json_typedprinter *p);
void upb_json_typedprinter_resetoutput(upb_json_typedprinter *p,
upb_bytessink *output);
upb_sink *upb_json_typedprinter_input(upb_json_typedprinter *p);
const upb_handlers *upb_json_typedprinter_newhandlers(const upb_msgdef *md,
const void *owner);
UPB_END_EXTERN_C // }
#ifdef __cplusplus
namespace upb {
namespace json {
inline TypedPrinter::TypedPrinter(const upb::Handlers* handlers) {
upb_json_typedprinter_init(this, handlers);
}
inline TypedPrinter::~TypedPrinter() {
upb_json_typedprinter_uninit(this);
}
inline void TypedPrinter::Reset() {
upb_json_typedprinter_reset(this);
}
inline void TypedPrinter::ResetOutput(BytesSink* output) {
upb_json_typedprinter_resetoutput(this, output);
}
inline Sink* TypedPrinter::input() {
return upb_json_typedprinter_input(this);
}
inline reffed_ptr<const Handlers> TypedPrinter::NewHandlers(
const upb::MessageDef *md) {
const Handlers* h = upb_json_typedprinter_newhandlers(md, &h);
return reffed_ptr<const Handlers>(h, &h);
}
} // namespace json
} // namespace upb
#endif
#endif // UPB_JSON_TYPED_PRINTER_H_
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