Hi! I'm trying to use xtce-rs to extract arguments from command buffers (and in the future I'd also like to create commands/telemetry containers in Rust from given parameters).

I'm new to XTCE/YAMCS and such but I have found the ACubeSAT yamcs instance which contains XTCE descriptions for many PUS services, which I'd also like to use in my project.

My first naïve attempt was to do something like this:

use std::path::Path;
use xtce_rs::{mdb::MissionDatabase, parser, proc::containers::process};
use env_logger;


fn main() {
    env_logger::init();
    let mut mdb = MissionDatabase::new();
    let paths = [
        "yamcs-instance/src/main/yamcs/mdb/common/dt/base-dt.xml",
        //"yamcs-instance/src/main/yamcs/mdb/common/dt/dt.xml",
        "yamcs-instance/src/main/yamcs/mdb/services/ST[03].xml"
    ];

    for path in paths {
        println!("Parsing {}", path);
        parser::parse(&mut mdb, Path::new(path)).unwrap();
    }
}

I got an UndefinedReference("/base-dt/uint8_t", ParameterType) - meaning that it could not find a reference to the /base-dt/ SpaceSystem. Looking into the parser::parse() function it is obvious why it doesn't work; the NameTree is created reinitalized on every call to parse.

I also tried futzing around with making my own parse function that takes a mutable NameTree but I still wasn't able to parse multiple XTCE files.

So my questions are:

• is it right that splitting the telecommand/telemetry definitons into multiple files / space systems is the recommended approach?
• do you have any pointers on how to parse multiple XTCE files in xtce-rs?

Thanks in advance!