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Diffstat (limited to 'src/upb_stream_vtbl.h')
-rw-r--r-- | src/upb_stream_vtbl.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/src/upb_stream_vtbl.h b/src/upb_stream_vtbl.h new file mode 100644 index 0000000..0ec45d2 --- /dev/null +++ b/src/upb_stream_vtbl.h @@ -0,0 +1,93 @@ +/* + * 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 |