Macro et

macro_rules! et {
    ($variant:ty, $value:ty, |$variable:ident| $($tt:tt)*) => { ... };
}

A macro to create an EnumTable for a given enumeration and value type.

Arguments

• $variant - The enumeration type that implements the Enumable trait.
• $value - The type of values to be associated with each enumeration variant.
• $count - The number of variants in the enumeration.
• $variable - The variable name to use in the closure for each variant.
• $($tt:tt)* - The closure that maps each variant to a value.

Example

use enum_table::{EnumTable, Enumable, et};

enum Test {
    A,
    B,
    C,
}

impl enum_table::Enumable for Test {
    const VARIANTS: &'static [Self] = &[Test::A, Test::B, Test::C];
}

const TABLE: EnumTable<Test, &'static str, { Test::COUNT }> =
    et!(Test, &'static str, |t| match t {
        Test::A => "A",
        Test::B => "B",
        Test::C => "C",
    });

assert_eq!(TABLE.get(&Test::A), &"A");
assert_eq!(TABLE.get(&Test::B), &"B");
assert_eq!(TABLE.get(&Test::C), &"C");