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//! Generates descriptors structure for unstable feature from Unstable Book
use std::path::{Path, PathBuf};
use quote::quote;
use walkdir::WalkDir;
use crate::{
codegen::{project_root, reformat, update, Mode, Result},
not_bash::{fs2, run},
};
pub fn generate_features(mode: Mode) -> Result<()> {
if !Path::new("./target/rust").exists() {
run!("git clone https://github.com/rust-lang/rust ./target/rust")?;
}
let contents = generate_descriptor("./target/rust/src/doc/unstable-book/src".into())?;
let destination = project_root().join("crates/ide/src/completion/generated_features.rs");
update(destination.as_path(), &contents, mode)?;
Ok(())
}
fn generate_descriptor(src_dir: PathBuf) -> Result<String> {
let definitions = ["language-features", "library-features"]
.iter()
.flat_map(|it| WalkDir::new(src_dir.join(it)))
.filter_map(|e| e.ok())
.filter(|entry| {
// Get all `.md ` files
entry.file_type().is_file() && entry.path().extension().unwrap_or_default() == "md"
})
.map(|entry| {
let path = entry.path();
let feature_ident = path.file_stem().unwrap().to_str().unwrap().replace("-", "_");
let doc = fs2::read_to_string(path).unwrap();
quote! { LintCompletion { label: #feature_ident, description: #doc } }
});
let ts = quote! {
use crate::completion::complete_attribute::LintCompletion;
pub(super) const FEATURES: &[LintCompletion] = &[
#(#definitions),*
];
};
reformat(&ts.to_string())
}
|
