1 /* pb_common.h: Common support functions for pb_encode.c and pb_decode.c. 2 * These functions are rarely needed by applications directly. 3 */ 4 5 #ifndef PB_COMMON_H_INCLUDED 6 #define PB_COMMON_H_INCLUDED 7 8 #include "pb.h" 9 10 #ifdef __cplusplus 11 extern "C" { 12 #endif 13 14 /* Iterator for pb_field_t list */ 15 struct pb_field_iter_s { 16 const pb_field_t *start; /* Start of the pb_field_t array */ 17 const pb_field_t *pos; /* Current position of the iterator */ 18 unsigned required_field_index; /* Zero-based index that counts only the required fields */ 19 void *dest_struct; /* Pointer to start of the structure */ 20 void *pData; /* Pointer to current field value */ 21 void *pSize; /* Pointer to count/has field */ 22 }; 23 typedef struct pb_field_iter_s pb_field_iter_t; 24 25 /* Initialize the field iterator structure to beginning. 26 * Returns false if the message type is empty. */ 27 bool pb_field_iter_begin(pb_field_iter_t *iter, const pb_field_t *fields, void *dest_struct); 28 29 /* Advance the iterator to the next field. 30 * Returns false when the iterator wraps back to the first field. */ 31 bool pb_field_iter_next(pb_field_iter_t *iter); 32 33 /* Advance the iterator until it points at a field with the given tag. 34 * Returns false if no such field exists. */ 35 bool pb_field_iter_find(pb_field_iter_t *iter, uint32_t tag); 36 37 #ifdef __cplusplus 38 } /* extern "C" */ 39 #endif 40 41 #endif 42 43