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macro_rules! impl_pretty_debug {
($thing:ident) => {
impl ::core::fmt::Debug for $thing {
fn fmt(&self, f: &mut ::core::fmt::Formatter) -> ::core::fmt::Result {
write!(f, "{}(", stringify!($thing))?;
for i in self[..].iter().cloned() {
write!(f, "{:02x}", i)?;
}
write!(f, ")")
}
}
}
}
macro_rules! impl_from_array_len {
($thing:ident, $capacity:tt, ($($N:tt)+)) => {
$(
impl From<[u8; $N]> for $thing {
fn from(arr: [u8; $N]) -> Self {
let mut data = [0u8; $capacity];
data[..$N].copy_from_slice(&arr);
$thing {
data,
len: $N,
}
}
}
)+
}
}
#[cfg(feature="serde")]
macro_rules! serde_impl(
($t:ident, $len:expr) => (
impl ::serde::Serialize for $t {
fn serialize<S: ::serde::Serializer>(&self, s: S) -> Result<S::Ok, S::Error> {
if s.is_human_readable() {
s.collect_str(self)
} else {
s.serialize_bytes(&self[..])
}
}
}
impl<'de> ::serde::Deserialize<'de> for $t {
fn deserialize<D: ::serde::Deserializer<'de>>(d: D) -> Result<$t, D::Error> {
use ::serde::de::Error;
use core::str::FromStr;
if d.is_human_readable() {
let sl: &str = ::serde::Deserialize::deserialize(d)?;
$t::from_str(sl).map_err(D::Error::custom)
} else {
let sl: &[u8] = ::serde::Deserialize::deserialize(d)?;
if sl.len() != $len {
Err(D::Error::invalid_length(sl.len(), &stringify!($len)))
} else {
let mut ret = [0; $len];
ret.copy_from_slice(sl);
Ok($t(ret))
}
}
}
}
)
);
#[cfg(not(feature="serde"))]
macro_rules! serde_impl(
($t:ident, $len:expr) => ()
);
#[cfg(feature = "serde")]
macro_rules! serde_impl_from_slice {
($t: ident) => {
impl ::serde::Serialize for $t {
fn serialize<S: ::serde::Serializer>(&self, s: S) -> Result<S::Ok, S::Error> {
if s.is_human_readable() {
s.collect_str(self)
} else {
s.serialize_bytes(&self.serialize())
}
}
}
impl<'de> ::serde::Deserialize<'de> for $t {
fn deserialize<D: ::serde::Deserializer<'de>>(d: D) -> Result<$t, D::Error> {
if d.is_human_readable() {
struct HexVisitor;
impl<'de> ::serde::de::Visitor<'de> for HexVisitor {
type Value = $t;
fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
formatter.write_str("an ASCII hex string")
}
fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E>
where
E: ::serde::de::Error,
{
if let Ok(hex) = str::from_utf8(v) {
str::FromStr::from_str(hex).map_err(E::custom)
} else {
Err(E::invalid_value(::serde::de::Unexpected::Bytes(v), &self))
}
}
fn visit_str<E>(self, v: &str) -> Result<Self::Value, E>
where
E: ::serde::de::Error,
{
str::FromStr::from_str(v).map_err(E::custom)
}
}
d.deserialize_str(HexVisitor)
} else {
struct BytesVisitor;
impl<'de> ::serde::de::Visitor<'de> for BytesVisitor {
type Value = $t;
fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
formatter.write_str("a bytestring")
}
fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E>
where
E: ::serde::de::Error,
{
$t::from_slice(v).map_err(E::custom)
}
}
d.deserialize_bytes(BytesVisitor)
}
}
}
};
}
#[cfg(not(feature = "serde"))]
macro_rules! serde_impl_from_slice(
($t:ident) => ()
);