• 6 Posts
  • 4 Comments
Joined 6 months ago
Cake day: May 9th, 2024
  • VegOwOtenks@lemmy.worldtoRust@programming.dev•[Help] Is there a way to detect all structs in the current crate that implement a certain trait?
    1·
    2 months ago

    You could wrap the entirety of your file in a monster macro but you’d still have to assign the macro result to a variable you need to register, which doesn’t sound viable to me at least.

    Maybe you can use a script that would extract all the trait implementations and create the boilerplate glue code for you, something like this:

    grep --recursive --only-matching "impl PluginFunction for \w*" functions/ | sed --quiet "s/functions\/\(.*\)\.rs:impl PluginFunction for \(\w*\)/crate::functions::\1::\2{}.register(\&mut functions_map)/p"

    I tried to recreate your situation locally but it may not match perfectly, maybe you’ll have to adjust it a little. When I run it on my file tree which looks like this

    functions
├── attr.rs
├── export.rs
└── render.rs

1 directory, 3 files

    where every file has a content like this

    // comment

pub struct MyAttrStructName {}

impl PluginFunction for MyAttrStructName {

}

    Then I receive the following output:

    crate::functions::attr::MyAttrStructName{}.register(&mut functions_map)
crate::functions::export::MyExportStructName{}.register(&mut functions_map)
crate::functions::render::MyRenderStructName{}.register(&mut functions_map)