yevm-misc 0.1.0

Utilities (keccak256, hex, HTTP client, byte buffer) shared across the YEVM crates.
Documentation 
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use crate::hex::parse_vec;
use std::fmt;

#[derive(Clone, Default, PartialEq, Eq)]
pub struct Buf(pub Vec<u8>);

impl Buf {
    pub fn as_slice(&self) -> &[u8] {
        &self.0
    }

    pub fn into_vec(self) -> Vec<u8> {
        self.0
    }

    pub fn len(&self) -> usize {
        self.0.len()
    }

    pub fn is_empty(&self) -> bool {
        self.len() == 0
    }
}

impl From<Vec<u8>> for Buf {
    fn from(value: Vec<u8>) -> Self {
        Self(value)
    }
}

impl fmt::Debug for Buf {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.write_str("0x")?;
        for b in &self.0 {
            write!(f, "{:02x}", b)?;
        }
        Ok(())
    }
}

impl fmt::Display for Buf {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        fmt::Debug::fmt(self, f)
    }
}

impl serde::Serialize for Buf {
    fn serialize<S: serde::Serializer>(&self, s: S) -> Result<S::Ok, S::Error> {
        s.collect_str(self)
    }
}

impl<'de> serde::Deserialize<'de> for Buf {
    fn deserialize<D: serde::Deserializer<'de>>(d: D) -> Result<Self, D::Error> {
        let s = String::deserialize(d)?;
        let bytes = parse_vec(&s).map_err(serde::de::Error::custom)?;
        Ok(Buf(bytes))
    }
}