1 //! Build file to generate packets
2 //!
3 //! Run `cargo install --path .` in `external/rust/crates/pdl-compiler` to ensure `pdlc`
4 //! is in your path.
5 use std::{env, fs::File, io::Write, path::Path};
6 
main()7 fn main() {
8     let out_dir = env::var_os("OUT_DIR").unwrap();
9     let dest_path = Path::new(&out_dir).join("_packets.rs");
10     let mut dest_file = File::create(dest_path).unwrap();
11 
12     let mut sources = pdl_compiler::ast::SourceDatabase::new();
13     let file = pdl_compiler::parser::parse_file(&mut sources, "src/packets.pdl")
14         .expect("failed to parse input pdl file");
15 
16     let generated = pdl_compiler::backends::rust::generate(&sources, &file, &[]);
17     dest_file.write_all(generated.as_bytes()).unwrap();
18 
19     println!("cargo:rerun-if-changed=build.rs");
20     println!("cargo:rerun-if-changed=src/packets.pdl");
21 }
22