#[macro_export]
macro_rules! hardfork {
($(#[$enum_meta:meta])* $enum:ident { $( $(#[$meta:meta])* $variant:ident ),* $(,)? }) => {
$(#[$enum_meta])*
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
#[derive(Debug, Copy, Clone, Eq, PartialEq, PartialOrd, Ord, Hash)]
pub enum $enum {
$( $(#[$meta])* $variant ),*
}
impl $enum {
pub const fn name(&self) -> &'static str {
match self {
$( $enum::$variant => stringify!($variant), )*
}
}
pub fn boxed(self) -> Box<dyn Hardfork> {
Box::new(self)
}
}
impl FromStr for $enum {
type Err = String;
fn from_str(s: &str) -> Result<Self, Self::Err> {
match s.to_lowercase().as_str() {
$(
s if s == stringify!($variant).to_lowercase() => Ok($enum::$variant),
)*
_ => return Err(format!("Unknown hardfork: {s}")),
}
}
}
impl Hardfork for $enum {
fn name(&self) -> &'static str {
self.name()
}
}
impl Display for $enum {
fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
write!(f, "{self:?}")
}
}
}
}