libipld_raw_cbor/
lib.rs

1//! CBOR codec.
2#![deny(missing_docs)]
3#![deny(warnings)]
4
5use core::convert::TryFrom;
6use libipld_core::codec::{Codec, Decode, Encode};
7pub use libipld_core::error::{Result, UnsupportedCodec};
8
9pub mod decode;
10pub mod encode;
11pub mod error;
12
13/// Raw CBOR codec.
14#[derive(Clone, Copy, Debug, Default, PartialEq, Eq, PartialOrd, Ord)]
15pub struct RawCborCodec;
16
17impl Codec for RawCborCodec {}
18
19impl From<RawCborCodec> for u64 {
20    fn from(_: RawCborCodec) -> Self {
21        0x51
22    }
23}
24
25impl TryFrom<u64> for RawCborCodec {
26    type Error = UnsupportedCodec;
27
28    fn try_from(_: u64) -> core::result::Result<Self, Self::Error> {
29        Ok(Self)
30    }
31}
32
33/// Marker trait for types supporting the `CborCodec`.
34pub trait Cbor42: Encode<RawCborCodec> + Decode<RawCborCodec> {}
35
36impl<T: Encode<RawCborCodec> + Decode<RawCborCodec>> Cbor42 for T {}
37
38#[cfg(test)]
39mod tests {
40    use super::*;
41    use libipld_core::cid::Cid;
42    use libipld_core::ipld::Ipld;
43    use libipld_macro::ipld;
44    use multihash::{Code, MultihashDigest};
45    use std::collections::HashSet;
46
47    #[test]
48    fn test_encode_decode_cbor() {
49        let cid = Cid::new_v1(0, Code::Blake3_256.digest(&b"cid"[..]));
50        let ipld = ipld!({
51          "number": 1,
52          "list": [true, null, false],
53          "bytes": vec![0, 1, 2, 3],
54          "map": { "float": 0.0, "string": "hello" },
55          "link": cid,
56        });
57        let bytes = RawCborCodec.encode(&ipld).unwrap();
58        let ipld2 = RawCborCodec.decode(&bytes).unwrap();
59        assert_eq!(ipld, ipld2);
60    }
61
62    #[test]
63    fn test_references() {
64        let cid = Cid::new_v1(0, Code::Blake3_256.digest(&b"0"[..]));
65        let ipld = ipld!({
66            "list": [true, cid],
67        });
68        let bytes = RawCborCodec.encode(&ipld).unwrap();
69        let mut set = HashSet::new();
70        RawCborCodec.references::<Ipld, _>(&bytes, &mut set).unwrap();
71        assert!(set.contains(&cid));
72    }
73}
libipld_raw_cbor/lib.rs

libipld_raw_cbor/
lib.rs
