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#[doc(hidden)]
#[macro_export]
macro_rules! impl_curr_code {
($(#[$attr:meta])* ($($vis:tt)*)
enum $name:ident {
$($var:ident { num: $num:expr, digit: $digit:expr, name: $currency:expr, },)*
}) => {
$(#[$attr])*
$($vis)* enum $name { $($var = $num),* }
impl $name {
pub fn alpha(&self) -> &'static str {
match self { $($name::$var => stringify!($var),)* }
}
pub fn num(&self) -> u32 {
match self { $($name::$var => $num,)* }
}
pub fn name(&self) -> &'static str {
match self { $($name::$var => $currency,)* }
}
pub fn digit(&self) -> Option<u32> {
match self { $($name::$var => $digit,)* }
}
}
impl ::std::str::FromStr for $name {
type Err = crate::error::ParseCodeError;
fn from_str(v: &str) -> Result<Self, Self::Err> {
::std::convert::TryFrom::try_from(v)
}
}
impl ::std::convert::TryFrom<&str> for $name {
type Error = crate::error::ParseCodeError;
fn try_from(v: &str) -> Result<Self, Self::Error> {
match v {
$(stringify!($var) => Ok($name::$var),)*
v => Err(crate::error::ParseCodeError::Alpha(v.into())),
}
}
}
impl ::std::convert::TryFrom<u32> for $name {
type Error = crate::error::ParseCodeError;
fn try_from(v: u32) -> Result<Self, Self::Error> {
match v {
$($num => Ok($name::$var),)*
v => Err(crate::error::ParseCodeError::Num(v)),
}
}
}
impl ::std::convert::From<$name> for &str {
fn from(v: $name) -> Self {
v.alpha()
}
}
impl ::std::convert::From<$name> for u32 {
fn from(v: $name) -> Self {
v.num()
}
}
}
}