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#[cfg(feature = "std")]
#[macro_export]
macro_rules! unit_struct {
(
$( #[$meta:meta] )*
$pub:vis struct $name:ident;
) => {
$( #[$meta] )*
#[derive(Debug)]
$pub struct $name;
impl ::core::fmt::Display for $name {
fn fmt(&self, f: &mut ::core::fmt::Formatter<'_>) -> ::core::fmt::Result {
::core::write!(f, "{:?}", self)
}
}
impl ::std::error::Error for $name {}
}
}
#[cfg(not(feature = "std"))]
#[macro_export]
macro_rules! unit_struct {
(
$( #[$meta:meta] )*
$pub:vis struct $name:ident;
) => {
$( #[$meta] )*
#[derive(Debug)]
$pub struct $name;
impl ::core::fmt::Display for $name {
fn fmt(&self, f: &mut ::core::fmt::Formatter<'_>) -> ::core::fmt::Result {
::core::write!(f, "{:?}", self)
}
}
}
}