smallish 0.1.0

Lightweight, no-std syntax for configuration and scripting.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46

// a macro to define Enum alongside EnumKind
// use: define_enum! { <normal enum definition> }
macro_rules! define_enum_with_kind {
    ($(#[$attr:meta])* $vis:vis enum $($tok:tt)+) => {
        define_enum_with_kind!{@only_define, $(#[$attr])* $vis enum $($tok)+}
        define_enum_with_kind!{@only_kind, $(#[$attr])* $vis enum $($tok)+}
    };

    (@only_define, $($tok:tt)+) => {
        $($tok)+
    };

    (@only_kind,
        $(#[$attr:meta])*
        $vis:vis enum $name:ident $(<$life:lifetime>)? {
            $(
                $(#[$variant_attr:meta])*
                $variant:ident $(($inner:ty))?
            ),*$(,)?
        }
    ) => {
        paste::paste! {
            /// Same as
            #[doc = concat!("[", stringify!($name), "]")]
            /// but without the attached data.
            #[derive(Clone, Copy, Debug, PartialEq, Eq)]
            #[cfg_attr(feature = "defmt", derive(defmt::Format))]
            $vis enum [<$name Kind>] {
                $(
                    $(#[$variant_attr])*
                    $variant,
                )*
            }

            impl $(<$life>)? $name $(<$life>)? {
                pub fn kind(&self) -> [<$name Kind>] {
                    match self {
                        $(Self::$variant $((define_enum_with_kind!(@pattern_ignore, $inner)))? => [<$name Kind>]::$variant,)*
                    }
                }
            }
        }
    };

    (@pattern_ignore, $tok:tt) => {_};
}