Macro mod_use

macro_rules! mod_use {
    ($($name:ident),* $(,)?) => { ... };
}

A macro that simplifies module declarations and re-exports in a single statement.

The mod_use! macro provides a convenient way to declare modules and re-export their contents in a single operation. This greatly reduces boilerplate code when organizing a codebase with many related modules, especially when those modules are intended to be made available through their parent module.

Zcash Concept Relation

In the ZeWIF codebase, many Zcash protocol elements are organized into logical groupings, such as transaction components, key types, and protocol-specific structures (Sapling, Sprout, Orchard). The mod_use! macro helps maintain clean organization while ensuring proper exports.

Examples

use crate::mod_use;

// Using the macro to define and export three modules
mod_use!(
    transaction_components,
    key_types,
    address_formats
);

This expands to:

mod transaction_components;
pub use transaction_components::*;

mod key_types;
pub use key_types::*;

mod address_formats;
pub use address_formats::*;