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//! Generates descriptors structure for unstable feature from Unstable Book
use crate::codegen::update;
use crate::codegen::{self, project_root, Mode, Result};
use quote::quote;
use std::fs;
use std::process::Command;
use walkdir::WalkDir;
pub fn generate_unstable_future_descriptor(mode: Mode) -> Result<()> {
let path = project_root().join(codegen::STORAGE);
fs::create_dir_all(path.clone())?;
Command::new("git").current_dir(path.clone()).arg("init").output()?;
Command::new("git")
.current_dir(path.clone())
.args(&["remote", "add", "-f", "origin", codegen::REPOSITORY_URL])
.output()?;
Command::new("git")
.current_dir(path.clone())
.args(&["sparse-checkout", "set", "/src/doc/unstable-book/src/"])
.output()?;
Command::new("git").current_dir(path.clone()).args(&["pull", "origin", "master"]).output()?;
//TODO: check git, and do pull
let src_dir = path.join("src/doc/unstable-book/src");
let files = WalkDir::new(src_dir.join("language-features"))
.into_iter()
.chain(WalkDir::new(src_dir.join("library-features")))
.filter_map(|e| e.ok())
.filter(|entry| {
// Get all `.md ` files
entry.file_type().is_file()
&& entry.path().extension().map(|ext| ext == "md").unwrap_or(false)
})
.collect::<Vec<_>>();
let definitions = files
.iter()
.map(|entry| {
let path = entry.path();
let feature_ident =
format!("{}", path.file_stem().unwrap().to_str().unwrap().replace("-", "_"));
let doc = format!("{}", std::fs::read_to_string(path).unwrap());
quote! { LintCompletion { label: #feature_ident, description: #doc } }
})
.collect::<Vec<_>>();
let ts = quote! {
use crate::completion::LintCompletion;
#[rustfmt::skip]
pub const UNSTABLE_FEATURE_DESCRIPTOR: &[LintCompletion] = &[
#(#definitions),*
];
};
let destination = project_root().join(codegen::UNSTABLE_FEATURE);
let contents = crate::reformat(ts.to_string())?;
update(destination.as_path(), &contents, mode)?;
Ok(())
}
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