Macro enso_shapely::define_singletons

macro_rules! define_singletons {
    ( $( $(#$meta:tt)* $name:ident ),* $(,)? ) => { ... };
}

Defines singleton types. For the following input:

define_singletons!{
    /// A Foo!
    Foo,
    /// A Bar!
    Bar,
}

It expands to:

#[allow(missing_docs)]
#[derive(Copy, Clone, Debug)]
#[doc = r###"A Foo!"###]
pub struct Foo;
impl Default for Foo {
    fn default() -> Self {
        Self
    }
}
#[allow(missing_docs)]
#[derive(Copy, Clone, Debug)]
#[doc = r###"A Bar!"###]
pub struct Bar;
impl Default for Bar {
    fn default() -> Self {
        Self
    }
}