Module codegen 

Generate a compile-time object dictionary from an EDS/DCF file (for build.rs).

Cross-platform. Generate a compile-time object dictionary from an EDS/DCF file.

generate_object_dictionary emits Rust source for a function that builds a canopen_rs::ObjectDictionary populated from a parsed Eds. Run it from a build.rs so a device’s .eds becomes a typed, zero-runtime-parse OD:

// build.rs
use canopen_host::{codegen::generate_object_dictionary, eds::Eds};
use std::{env, fs, path::Path};

fn main() {
    let eds = Eds::from_file("device.eds").unwrap();
    let src = generate_object_dictionary(&eds, "device_od");
    let out = Path::new(&env::var("OUT_DIR").unwrap()).join("device_od.rs");
    fs::write(out, src).unwrap();
    println!("cargo:rerun-if-changed=device.eds");
}

// in your crate:
include!(concat!(env!("OUT_DIR"), "/device_od.rs"));
let od = device_od();   // ObjectDictionary<N>, ready to serve

Functions

generate_object_dictionary

Emit Rust source for a pub fn <fn_name>() -> canopen_rs::ObjectDictionary<N> that inserts every object in eds, with N sized to fit exactly.