Macro write_fn

macro_rules! write_fn {
    ($id:ident, $t:ty, $data:expr) => { ... };
}

Write a getter function for a heap-allocated variable.

Makes the getter function available for import into the main crate via use_symbols.

Parameters

• $id: the name of the getter function. This must be used when importing with use_symbols.
• $t: the return type of the getter function.
• $data: the data to return from the geter function.

Example

build.rs

use rustifact::ToTokenStream;

fn main() {
   let vecs = vec![vec![1, 2], vec![1, 2, 3], vec![1, 2, 3, 4]];
   rustifact::write_fn!(get_vecs, Vec<Vec<u32>>, vecs);
}

src/main.rs

rustifact::use_symbols!(get_vecs);
// The above line is equivalent to the declaration:
// fn get_vecs() -> Vec<Vec<u32>> {
//     vec![vec![1, 2], vec![1, 2, 3], vec![1, 2, 3, 4]]
// }

fn main() {
    println!("{:?}", get_vecs());
}