Macro derive_deftly_template_ConstantString 

macro_rules! derive_deftly_template_ConstantString {
    ({ $($driver:tt)* } [$($aoptions:tt)*] ($($future:tt)*) $($tpassthrough:tt)*) => { ... };
    ($($wrong:tt)*) => { ... };
}

Derive all parsing and encoding for a fixed, constant, string

Usually, use the more-cooked [define_constant_string!] macro instead.

Input

Typically, a unit struct. (Can be applied to any ZST struct that implements Default.)

Required attribute

• #[deftly(constant_string = EXPR))] where EXPR is a &str expression.

Generated items

Implementations of [FromStr, Display, and NormalItemArgument]. Therefore also ItemArgument and ItemArgumentParseable.

Example

use derive_deftly::Deftly;
use tor_netdoc::derive_deftly_template_ConstantString;

#[derive(Default, Debug, Clone, Copy, Eq, PartialEq, Ord, PartialOrd, Hash, Deftly)]
#[derive_deftly(ConstantString)]
#[deftly(constant_string = "sha3-256")]
#[allow(clippy::exhaustive_structs)]
pub struct SharedRandV1AlgName;

This is a derive_deftly template. Do not invoke it directly. To use it, write: #[derive(Deftly)] #[derive_deftly(ConstantString)].