#pragma once #ifdef Plan9#include <u.h>#include <libc.h>typedef vlong int64_t;typedef uvlong uint64_t;typedef int int32_t;typedef uint uint32_t;typedef short int16_t;typedef ushort uint16_t;typedef schar int8_t;typedef uchar uint8_t;#define NULL nil#define stderr 2#define fprintf fprint#define vfprintf vfprint#define PRIu64 "ull"#define PRId64 "ll"#endif #ifdef __GNUC__#define PB_GNUC_ATTR(a) __attribute__((a))#else#define PB_GNUC_ATTR(a)#endif /* callback return codes */enum {	PB_CALLBACK_ERROR = -1, /* parsing should fail */	PB_CALLBACK_THROW_AWAY, /* throw away the value */	PB_CALLBACK_OK,}; enum {	PB_FLAG_MASK_TYPE = 3, /* PB_TYPE_* */	PB_FLAG_POINTER = 1<<2,	PB_FLAG_TRUNCATE = 1<<3,	PB_FLAG_CONST_SIZE = 1<<4,	PB_FLAG_REQUIRED = 1<<5,	PB_FLAG_SIGNED = 1<<6,	PB_FLAG_NO_PRINT = 1<<7,	PB_FLAG_IS_CONST = 1<<8,	PB_FLAG_TYPE_UNSIGNED = 1<<9,}; enum {	PB_TYPE_STRING,	PB_TYPE_BYTES,	PB_TYPE_INTEGER,	PB_TYPE_MSG,}; struct pb_default { /* default value */	uint64_t integer;	void *pointer;	uint16_t size;}; struct pb_field {#ifdef PB_PRINTERS	const char *name;	char *(*seprint)(const void *in, char *s, char *e, int left, int indent, const struct pb_field *field);#endif	uint16_t offset; /* offset in the parent data struct, bytes */	int16_t num_at; /* offset in the parent data struct of the "int num" related to this field, bytes */	uint16_t num; /* number of entries in the array */	uint16_t size; /* sizeof() of the field if not array, sizeof(a[0]) if array */	uint16_t flags;	uint8_t index; /* [1,255], 0 is used for non-protobuf fields */	uint8_t dfltidx; /* points to the array of default values, [1,255] */	uint8_t msgidx; /* points to the array of message types, [1,255] */	uint8_t cbidx; /* points to the array of callbacks, [1,255] */}; struct pb_msg {	const struct pb_field *fields;#ifdef PB_PRINTERS	const char *name;	const int *indices;#endif 	/* buffer to store strings by pointers */	int16_t buffer_at;	uint16_t buffer_size; 	/* stuff that is not used goes into the "rest" buffer */	int16_t rest_at;	uint16_t rest_size; 	uint8_t num_fields;}; struct pb_data {	const struct pb_msg *msgs;	const struct pb_default *dflts;	const void **cbs;}; void pb_reset(void *out, const struct pb_msg *msg, const struct pb_data *pb);const uint8_t *pb_decode(void *out, const uint8_t *s, const uint8_t *e, const struct pb_msg *msg, const struct pb_data *pb);uint8_t *pb_encode(const void *in, uint8_t *s, uint8_t *e, const struct pb_msg *msg, const struct pb_data *pb);char *pb_seprint(const void *in, char *s, char *e, const struct pb_msg *msg, const struct pb_data *pb, int left, int indent); #ifdef PB_PRINTERSchar *seprintf(char *s, char *e, char *fmt, ...) PB_GNUC_ATTR(format(printf, 3, 4));#endif