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/*
* upb - a minimalist implementation of protocol buffers.
*
* vtable declarations for types that are implementing any of the src or sink
* interfaces. Only components that are implementing these interfaces need
* to worry about this file.
*
* Copyright (c) 2010 Joshua Haberman. See LICENSE for details.
*/
#ifndef UPB_SRCSINK_VTBL_H_
#define UPB_SRCSINK_VTBL_H_
#include "upb.h"
#ifdef __cplusplus
extern "C" {
#endif
struct upb_src;
typedef struct upb_src upb_src;
struct upb_sink;
typedef struct upb_sink upb_sink;
struct upb_bytesrc;
typedef struct upb_bytesrc upb_bytesrc;
struct upb_bytesink;
typedef struct upb_bytesink upb_bytesink;
// Typedefs for function pointers to all of the virtual functions.
typedef struct _upb_fielddef (*upb_src_getdef_fptr)(upb_src *src);
typedef bool (*upb_src_getval_fptr)(upb_src *src, upb_valueptr val);
typedef bool (*upb_src_skipval_fptr)(upb_src *src);
typedef bool (*upb_src_startmsg_fptr)(upb_src *src);
typedef bool (*upb_src_endmsg_fptr)(upb_src *src);
typedef bool (*upb_sink_putdef_fptr)(upb_sink *sink, struct _upb_fielddef *def);
typedef bool (*upb_sink_putval_fptr)(upb_sink *sink, upb_value val);
typedef bool (*upb_sink_startmsg_fptr)(upb_sink *sink);
typedef bool (*upb_sink_endmsg_fptr)(upb_sink *sink);
typedef upb_string *(*upb_bytesrc_get_fptr)(upb_bytesrc *src);
typedef void (*upb_bytesrc_recycle_fptr)(upb_bytesrc *src, upb_string *str);
typedef bool (*upb_bytesrc_append_fptr)(
upb_bytesrc *src, upb_string *str, upb_strlen_t len);
typedef int32_t (*upb_bytesink_put_fptr)(upb_bytesink *sink, upb_string *str);
// Vtables for the above interfaces.
typedef struct {
upb_src_getdef_fptr getdef;
upb_src_getval_fptr getval;
upb_src_skipval_fptr skipval;
upb_src_startmsg_fptr startmsg;
upb_src_endmsg_fptr endmsg;
} upb_src_vtable;
typedef struct {
upb_bytesrc_get_fptr get;
upb_bytesrc_append_fptr append;
upb_bytesrc_recycle_fptr recycle;
} upb_bytesrc_vtable;
// "Base Class" definitions; components that implement these interfaces should
// contain one of these structures.
struct upb_src {
upb_src_vtable *vtbl;
upb_status status;
bool eof;
#ifndef NDEBUG
int state; // For debug-mode checking of API usage.
#endif
};
struct upb_bytesrc {
upb_bytesrc_vtable *vtbl;
upb_status status;
bool eof;
};
INLINE void upb_src_init(upb_src *s, upb_src_vtable *vtbl) {
s->vtbl = vtbl;
s->eof = false;
#ifndef DEBUG
// TODO: initialize debug-mode checking.
#endif
}
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif
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