macro_rules! if_signed {
(Signed; $($rem:tt)+) => {
$($rem)+
};
(Unsigned; $($rem:tt)+) => {};
}
macro_rules! if_unsigned {
(Signed; $($rem:tt)+) => {};
(Unsigned; $($rem:tt)+) => {
$($rem)+
};
}
macro_rules! if_signed_unsigned {
(Signed, $signed:expr, $unsigned:expr) => {
$signed
};
(Unsigned, $signed:expr, $unsigned:expr) => {
$unsigned
};
($Signedness:tt, $signed:expr, $unsigned:expr,) => {
if_signed_unsigned! { $Signedness, $signed, $unsigned }
};
}
macro_rules! if_signed_else_empty_str {
(Signed, $($signed:tt)*) => {
concat!($($signed)*)
};
(Unsigned, $($signed:tt)*) => {
""
};
}
macro_rules! if_unsigned_else_empty_str {
(Signed, $($unsigned:tt)*) => {
""
};
(Unsigned, $($unsigned:tt)*) => {
concat!($($unsigned)*)
};
}
macro_rules! doc_comment {
($comment:expr; $($tt:tt)*) => {
#[doc = $comment]
$($tt)*
};
}
macro_rules! comment {
($($comment:expr),*; $($tt:tt)*) => {
doc_comment! {
concat!($($comment),*);
$($tt)*
}
};
}