void layout_deep_copy(MessageLayout* layout, void* to, void* from) {
upb_msg_field_iter it;
for (upb_msg_field_begin(&it, layout->msgdef);
!upb_msg_field_done(&it);
upb_msg_field_next(&it)) {
const upb_fielddef* field = upb_msg_iter_field(&it);
void* to_memory = slot_memory(layout, to, field);
uint32_t* to_oneof_case = slot_oneof_case(layout, to, field);
void* from_memory = slot_memory(layout, from, field);
uint32_t* from_oneof_case = slot_oneof_case(layout, from, field);
if (upb_fielddef_containingoneof(field)) {
if (*from_oneof_case == upb_fielddef_number(field)) {
*to_oneof_case = *from_oneof_case;
native_slot_deep_copy(upb_fielddef_type(field), to_memory, from_memory);
}
} else if (is_map_field(field)) {
DEREF(to_memory, VALUE) =
Map_deep_copy(DEREF(from_memory, VALUE));
} else if (upb_fielddef_label(field) == UPB_LABEL_REPEATED) {
DEREF(to_memory, VALUE) =
RepeatedField_deep_copy(DEREF(from_memory, VALUE));
} else {
if (field_contains_hasbit(layout, field)) {
if (!slot_is_hasbit_set(layout, from, field)) continue;
slot_set_hasbit(layout, to, field);
}
native_slot_deep_copy(upb_fielddef_type(field), to_memory, from_memory);
}
}
}
// Used by Google::Protobuf.deep_copy but not exposed directly.
VALUE Map_deep_copy(VALUE _self) {
Map* self = ruby_to_Map(_self);
VALUE new_map = Map_new_this_type(_self);
Map* new_self = ruby_to_Map(new_map);
upb_strtable_iter it;
for (upb_strtable_begin(&it, &self->table);
!upb_strtable_done(&it);
upb_strtable_next(&it)) {
upb_value v = upb_strtable_iter_value(&it);
void* mem = value_memory(&v);
upb_value dup;
void* dup_mem = value_memory(&dup);
native_slot_deep_copy(self->value_type, dup_mem, mem);
if (!upb_strtable_insert2(&new_self->table,
upb_strtable_iter_key(&it),
upb_strtable_iter_keylength(&it),
dup)) {
rb_raise(rb_eRuntimeError, "Error inserting value into new table");
}
}
return new_map;
}
// Internal only: used by Google::Protobuf.deep_copy.
VALUE RepeatedField_deep_copy(VALUE _self) {
RepeatedField* self = ruby_to_RepeatedField(_self);
VALUE new_rptfield = RepeatedField_new_this_type(_self);
RepeatedField* new_rptfield_self = ruby_to_RepeatedField(new_rptfield);
RepeatedField_reserve(new_rptfield_self, self->size);
upb_fieldtype_t field_type = self->field_type;
size_t elem_size = native_slot_size(field_type);
size_t off = 0;
for (int i = 0; i < self->size; i++, off += elem_size) {
void* to_mem = (uint8_t *)new_rptfield_self->elements + off;
void* from_mem = (uint8_t *)self->elements + off;
native_slot_deep_copy(field_type, to_mem, from_mem);
new_rptfield_self->size++;
}
return new_rptfield;
}
