Integral enum

Rust derive-macro that simplifies integral enum creation

Example

```rust use integral_enum::IntegralEnum;

/// Simple meaningful enum /// (!) repr attribute is required /// and can contain only integral values /// like u8, u16, u32, u64, u128 and its signed equivalent

[derive(IntegralEnum)]

[repr(u8)]

pub enum Emotion { // Explicit discriminant is required Pain = 0, Hatred = 1, }

// Test it asserteq!(Emotion::tryfrom(0), Ok(Emotion::Pain)); asserteq!(Emotion::tryfrom(1), Ok(Emotion::Hatred)); asserteq!(Emotion::tryfrom(123), Err(())); ```

Macro will automatically generate the following trait implementations: TryFrom, Clone, Copy, PartialEq, Eq, Display, Debug

if you want to remove certain trait implementation, then pass one of the following attributes to the macro: #[no_debug], #[no_display], #[no_copy], #[no_total_eq], #[no_clone]

• Some of these attributes are dependant, for example Copy depends on Clone, so if you disable Clone generation, Copy generation will be disabled also.
• no_total_eq disables Eq trait implementation

Example:

```rust use integral_enum::IntegralEnum;

[derive(IntegralEnum)]

[repr(u8)]

[no_display]

pub enum Emotion { // Explicit discriminant is required Pain = 0, Hatred = 1, }

println!("{}", Emotion::Pain); // Compile error ```

TODO

• Do we really need to implement PartialOrd + Ord also?