/* Allocates memory */
string* factor_vm::reallot_string(string* str_, cell capacity) {
data_root<string> str(str_, this);
if (reallot_string_in_place_p(str.untagged(), capacity)) {
str->length = tag_fixnum(capacity);
if (to_boolean(str->aux)) {
byte_array* aux = untag<byte_array>(str->aux);
aux->capacity = tag_fixnum(capacity * 2);
}
return str.untagged();
} else {
cell to_copy = string_capacity(str.untagged());
if (capacity < to_copy)
to_copy = capacity;
data_root<string> new_str(allot_string_internal(capacity), this);
memcpy(new_str->data(), str->data(), to_copy);
if (to_boolean(str->aux)) {
byte_array* new_aux = allot_uninitialized_array<byte_array>(capacity * 2);
new_str->aux = tag<byte_array>(new_aux);
write_barrier(&new_str->aux);
byte_array* aux = untag<byte_array>(str->aux);
memcpy(new_aux->data<uint16_t>(), aux->data<uint16_t>(),
to_copy * sizeof(uint16_t));
}
fill_string(new_str.untagged(), to_copy, capacity, '\0');
return new_str.untagged();
}
}
/* Allocates memory */
string *factor_vm::allot_string(cell capacity, cell fill)
{
data_root<string> str(allot_string_internal(capacity),this);
fill_string(str.untagged(),0,capacity,fill);
return str.untagged();
}