rkyv (archive) is a zero-copy deserialization framework for Rust.
- rkyv, the core library
- rkyv_dyn, which adds trait object support to rkyv
- rkyv_typename, a type naming library
- The rkyv book covers the motivation and architecture of rkyv
use rkyv::{
archived_value,
de::deserializers::AllocDeserializer,
ser::{
serializers::WriteSerializer,
Serializer,
},
Archive,
Serialize,
Deserialize,
};
#[derive(Archive, Deserialize, Serialize, Debug, PartialEq)]
struct Test {
int: u8,
string: String,
option: Option<Vec<i32>>,
}
fn main() {
let value = Test {
int: 42,
string: "hello world".to_string(),
option: Some(vec![1, 2, 3, 4]),
};
let mut serializer = WriteSerializer::new(Vec::new());
let pos = serializer.serialize_value(&value).expect("failed to serialize value");
let buf = serializer.into_inner();
let archived = unsafe { archived_value::<Test>(buf.as_ref(), pos) };
assert_eq!(archived.int, value.int);
assert_eq!(archived.string, value.string);
assert_eq!(archived.option, value.option);
let mut deserializer = AllocDeserializer;
let deserialized = archived.deserialize(&mut deserializer).expect("failed to deserialize value");
assert_eq!(deserialized, value);
}