How to access a macro from a mod.rs within the same directory in Rust 2018?

Asked Sep 17 '19 at 03:04

Active May 14 '20 at 16:19

Viewed 88 times

Is it possible to use a macro that lives in the mod.rs file in the same directory without the use directive?

My project structure is as follows:

src
 |-- ui
      |-- mod.rs
      |-- alarm.rs

Now in mod.rs I have

#[macro_export]
macro_rules! pack {
    ($container:expr, $widget:expr, $expand:expr) => {
        $container.pack_start($widget, $expand, true, crate::consts::DIALOG_BOX_SPACING_U32)
    };
}

But in alarm.rs I cannot access this macro using super::pack!(). How can I access a macro defined in mod.rs? For reference, I can access functions using super::a_pub_fn(arg) way with no issues.

edited May 14 '20 at 16:19

pretzelhammer

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asked Sep 17 '19 at 03:04

noconst

In short, `crate::pack!();` works because macros always live at the top-level of a crate. But this is a duplicate nonetheless. – edwardw Sep 17 '19 at 05:05
You need to add `#[macro_use]` in your mod declaration. – Akiner Alkan Sep 17 '19 at 06:16

How to access a macro from a mod.rs within the same directory in Rust 2018?

0 Answers0