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#[macro_export]
macro_rules! enum_from_u32 {
($(#[$attr:meta])* pub enum $name:ident {
$($(#[$var_attr:meta])* $variant:ident = $e:expr,)*
}) => {
$(#[$attr])*
pub enum $name {
$($(#[$var_attr])* $variant = $e),*
}
impl $name {
pub fn from_u32(u: u32) -> Option<$name> {
$(if u == $name::$variant as u32 {
return Some($name::$variant)
})*
None
}
}
};
($(#[$attr:meta])* pub enum $name:ident {
$($(#[$var_attr:meta])* $variant:ident,)*
}) => {
$(#[$attr])*
pub enum $name {
$($(#[$var_attr])* $variant,)*
}
impl $name {
pub fn from_u32(u: u32) -> Option<$name> {
$(if u == $name::$variant as u32 {
return Some($name::$variant)
})*
None
}
}
}
}
