static bool checkreturn pb_field_find(pb_field_iterator_t *iter, uint32_t tag)
{
int start = iter->field_index;
do {
if (iter->current->tag == tag)
return true;
pb_field_next(iter);
} while (iter->field_index != start);
return false;
}
/* Step through the iterator until an extension field is found or until all
* entries have been checked. There can be only one extension field per
* message. Returns false if no extension field is found. */
static bool checkreturn find_extension_field(pb_field_iterator_t *iter)
{
unsigned start = iter->field_index;
do {
if (PB_LTYPE(iter->pos->type) == PB_LTYPE_EXTENSION)
return true;
pb_field_next(iter);
} while (iter->field_index != start);
return false;
}
static bool checkreturn pb_field_find(pb_field_iterator_t *iter, uint32_t tag)
{
unsigned start = iter->field_index;
do {
if (iter->pos->tag == tag &&
PB_LTYPE(iter->pos->type) != PB_LTYPE_EXTENSION)
{
return true;
}
pb_field_next(iter);
} while (iter->field_index != start);
return false;
}
/* Initialize message fields to default values, recursively */
static void pb_message_set_to_defaults(const pb_field_t fields[], void *dest_struct)
{
pb_field_iterator_t iter;
pb_field_init(&iter, fields, dest_struct);
/* Initialize size/has fields and apply default values */
do
{
pb_type_t type;
type = iter.current->type;
if (iter.current->tag == 0)
continue;
if (PB_ATYPE(type) == PB_ATYPE_STATIC)
{
/* Initialize the size field for optional/repeated fields to 0. */
if (PB_HTYPE(type) == PB_HTYPE_OPTIONAL)
{
*(bool*)iter.pSize = false;
}
else if (PB_HTYPE(type) == PB_HTYPE_REPEATED)
{
*(size_t*)iter.pSize = 0;
continue; /* Array is empty, no need to initialize contents */
}
/* Initialize field contents to default value */
if (PB_LTYPE(iter.current->type) == PB_LTYPE_SUBMESSAGE)
{
pb_message_set_to_defaults((const pb_field_t *) iter.current->ptr, iter.pData);
}
else if (iter.current->ptr != NULL)
{
memcpy(iter.pData, iter.current->ptr, iter.current->data_size);
}
else
{
memset(iter.pData, 0, iter.current->data_size);
}
}
else if (PB_ATYPE(type) == PB_ATYPE_CALLBACK)
{
continue; /* Don't overwrite callback */
}
} while (pb_field_next(&iter));
}
