fn deserialize()

in src/ristretto.rs [362:389]

• 24 lines of code
• 3 McCabe index (conditional complexity)

    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
        where D: Deserializer<'de>
    {
        struct RistrettoPointVisitor;

        impl<'de> Visitor<'de> for RistrettoPointVisitor {
            type Value = RistrettoPoint;

            fn expecting(&self, formatter: &mut ::core::fmt::Formatter) -> ::core::fmt::Result {
                formatter.write_str("a valid point in Ristretto format")
            }

            fn visit_seq<A>(self, mut seq: A) -> Result<RistrettoPoint, A::Error>
                where A: serde::de::SeqAccess<'de>
            {
                let mut bytes = [0u8; 32];
                for i in 0..32 {
                    bytes[i] = seq.next_element()?
                        .ok_or(serde::de::Error::invalid_length(i, &"expected 32 bytes"))?;
                }
                CompressedRistretto(bytes)
                    .decompress()
                    .ok_or(serde::de::Error::custom("decompression failed"))
            }
        }

        deserializer.deserialize_tuple(32, RistrettoPointVisitor)
    }