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|
use std::{
env::var,
ffi::OsStr,
fs::{
read,
read_dir,
read_to_string,
write,
},
io::Write,
path::{
Path,
PathBuf,
},
process::{
Command,
Stdio,
},
};
use quote::quote;
fn main() {
println!("cargo::rerun-if-changed=nvim-treesitter/lua/nvim-treesitter/parsers.lua");
println!("cargo::rerun-if-changed=generate_parsers.lua");
let mut child = Command::new("lua")
.arg("generate_parsers.lua")
.stdin(Stdio::piped())
.stdout(Stdio::piped())
.spawn()
.expect("Failed to spawn process");
let mut stdin = child.stdin.take().expect("Failed to open stdin");
std::thread::spawn(move || {
stdin
.write_all(
read(Path::new("nvim-treesitter/lua/nvim-treesitter/parsers.lua"))
.expect("Failed to create parsers path")
.as_ref(),
)
.expect("Failed to write to stdin");
})
.join()
.unwrap();
let output = child.wait_with_output().expect("Failed to read stdout");
write(
PathBuf::from(format!("{}/_parsers.rs", var("OUT_DIR").unwrap())),
output.stdout,
)
.unwrap();
let query_dirs = read_dir(Path::new("nvim-treesitter/queries"))
.expect("Failed to read nvim-treesitter/queries")
.filter_map(|entry| {
let path = entry.unwrap().path();
path.is_dir().then_some(path)
})
.collect::<Vec<PathBuf>>();
let queries = query_dirs
.iter()
.filter_map(|path| {
read_dir(path)
.map(|entries| {
(
path.file_name().unwrap().to_str().unwrap(),
entries.filter_map(|entry| entry.ok()),
)
})
.ok()
})
.map(|(lang, entries)| {
let entries = entries.filter_map(|entry| {
let path = entry.path();
match path.file_stem().map(OsStr::to_str).flatten() {
Some(stem @ ("highlights" | "injections" | "locals")) => {
let content =
read_to_string(&path).expect("Query file should be valid UTF-8");
Some(quote! {
(#stem, #content)
})
}
_ => None,
}
});
quote! {
(#lang, HashMap::from([
#(#entries),*
]))
}
});
let code = quote! {
pub static QUERIES: LazyLock<HashMap<&'static str, HashMap<&'static str, &'static str>>> = LazyLock::new(|| {
HashMap::from([
#(#queries),*
])
});
};
let tree = &syn::parse2(code).unwrap();
let formatted = prettyplease::unparse(tree);
write(
PathBuf::from(format!("{}/_queries.rs", var("OUT_DIR").unwrap())),
formatted,
)
.unwrap();
}
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