1 files changed, 16 insertions, 159 deletions

diff --git a/xtask/src/codegen/gen_unstable_future_descriptor.rs b/xtask/src/codegen/gen_unstable_future_descriptor.rs
index eaf063371..fee68c365 100644
--- a/xtask/src/codegen/gen_unstable_future_descriptor.rs
+++ b/xtask/src/codegen/gen_unstable_future_descriptor.rs
@@ -2,81 +2,27 @@
 
 use crate::codegen::update;
 use crate::codegen::{self, project_root, Mode, Result};
-use chrono::prelude::*;
-use fs::read_to_string;
-use graphql_client::*;
-use proc_macro2::TokenStream;
 use quote::quote;
-use regex::Regex;
-use reqwest;
-use serde::*;
 use std::fs;
-use std::fs::File;
-use std::io::copy;
-use std::io::prelude::*;
-use std::path::PathBuf;
 use std::process::Command;
 use walkdir::WalkDir;
 
-type URI = String;
-type DateTime = String;
-
-#[derive(GraphQLQuery)]
-#[graphql(
-    schema_path = "src/codegen/schema.graphql",
-    query_path = "src/codegen/last_commit_that_affected_path.graphql"
-)]
-struct LastCommitThatAffectedPath;
-
-fn deep_destructuring(
-    response_body: Response<last_commit_that_affected_path::ResponseData>,
-) -> CommitInfo {
-    let t = response_body.data.unwrap().repository.unwrap().object.unwrap().on;
-
-    use last_commit_that_affected_path::LastCommitThatAffectedPathRepositoryObjectOn::Commit;
-    let commit = match t {
-        Commit(data) => data,
-        _ => panic!("type does not match"),
-    };
-    let edges = commit.history.edges.unwrap();
-    let node = edges.first().unwrap().as_ref().unwrap().node.as_ref().unwrap();
-    CommitInfo { commit_url: node.commit_url.clone(), committed_date: node.committed_date.clone() }
-}
-
-struct CommitInfo {
-    commit_url: String,
-    committed_date: String,
-}
-
-fn last_update(
-    owner: &str,
-    name: &str,
-    path: &str,
-    auth_token: Option<&str>,
-) -> Result<CommitInfo> {
-    let query =
-        LastCommitThatAffectedPath::build_query(last_commit_that_affected_path::Variables {
-            owner: owner.to_owned(),
-            name: name.to_owned(),
-            path: path.to_owned(),
-        });
-
-    let client = reqwest::blocking::Client::new();
-    let mut headers = reqwest::header::HeaderMap::new();
-    headers.insert("User-Agent", "https://github.com/rust-analyzer/rust-analyzer".parse()?);
-    let mut request = client.post("https://api.github.com/graphql").headers(headers).json(&query);
-
-    if auth_token.is_some() {
-        request = request.bearer_auth(auth_token.unwrap());
-    }
-
-    let response = request.send()?;
+pub fn generate_unstable_future_descriptor(mode: Mode) -> Result<()> {
+    let path = project_root().join(codegen::STORAGE);
+    fs::create_dir_all(path.clone())?;
 
-    let response_body: Response<last_commit_that_affected_path::ResponseData> = response.json()?;
-    Ok(deep_destructuring(response_body))
-}
+    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()?;
 
-fn generate_descriptor(src_dir: PathBuf) -> Result<TokenStream> {
+    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")))
@@ -107,98 +53,9 @@ fn generate_descriptor(src_dir: PathBuf) -> Result<TokenStream> {
             #(#definitions),*
         ];
     };
-    Ok(ts)
-}
-
-fn add_anchor(text: impl std::fmt::Display, anchor: &str) -> String {
-    let anchor_str = format!(
-        r#"//The anchor is used to check if file is up to date and represent the time 
-    //of the last commit that affected path where located data for generation
-    //ANCHOR: {}"#,
-        anchor
-    );
-    format!("{}\n\n{}\n", anchor_str, text)
-}
-
-fn is_actual(path: &PathBuf, str_datetime: &str) -> bool {
-    let re = Regex::new(r"//ANCHOR: (\S*)").unwrap();
-    let opt_str = fs::read_to_string(path);
-    if opt_str.is_err() {
-        return false;
-    }
-    let text = opt_str.unwrap();
-    let opt_datetime = re.captures(text.as_str());
-    if opt_datetime.is_none() {
-        return false;
-    }
-    let str_file_dt = opt_datetime.unwrap().get(1).unwrap().as_str();
-    let file_dt = str_file_dt.parse::<chrono::DateTime<Utc>>().unwrap();
-    let datetime = str_datetime.parse::<chrono::DateTime<Utc>>().unwrap();
-
-    file_dt == datetime
-}
-
-fn download_tar(
-    owner: &str,
-    name: &str,
-    auth_token: Option<&str>,
-    destination: &PathBuf,
-    fname: &str,
-) -> Result<()> {
-    let mut headers = reqwest::header::HeaderMap::new();
-    headers.insert("User-Agent", "https://github.com/rust-analyzer/rust-analyzer".parse()?);
-    let mut request = reqwest::blocking::Client::new()
-        .get(format!("https://api.github.com/repos/{}/{}/tarball", owner, name).as_str())
-        .headers(headers);
-
-    if auth_token.is_some() {
-        request = request.bearer_auth(auth_token.unwrap());
-    }
-
-    let response = request.send()?;
-    let download_url = response.url();
-    
-    let mut response = reqwest::blocking::Client::new()
-        .get(download_url.as_str())
-        .send()?;
-
-    let mut n = fname.to_string();
-    n.push_str(".tar.gz");
-    let fpath = destination.join(n);
-    let mut file = File::create(fpath)?; 
-    response.copy_to(&mut file)?;
-
-    Ok(())
-}
-
-pub fn generate_unstable_future_descriptor(mode: Mode) -> Result<()> {
-    const auth_token: Option<&str> = None;
-
-    let path = project_root().join(codegen::STORAGE);
-    fs::create_dir_all(path.clone())?;
-
-    let commit_info =
-        last_update(codegen::REPO_OWNER, codegen::REPO_NAME, codegen::REPO_PATH, auth_token)?;
-
-    if is_actual(
-        &project_root().join(codegen::GENERATION_DESTINATION),
-        commit_info.committed_date.as_str(),
-    ) {
-        return Ok(());
-    } 
-
-    download_tar(codegen::REPO_OWNER, codegen::REPO_NAME, auth_token, &path, "repository")?;
-    Command::new("tar")
-        .args(&["-xvf", concat!("repository",".tar.gz"), "--wildcards", "*/src/doc/unstable-book/src", "--strip=1"])
-        .current_dir(codegen::STORAGE)
-        .output()?;
-
-    let src_dir = path.join(codegen::REPO_PATH);
-    let gen_holder = generate_descriptor(src_dir)?.to_string();
-    let gen_holder = add_anchor(gen_holder, commit_info.committed_date.as_str());
 
-    let destination = project_root().join(codegen::GENERATION_DESTINATION);
-    let contents = crate::reformat(gen_holder)?;
+    let destination = project_root().join(codegen::UNSTABLE_FEATURE);
+    let contents = crate::reformat(ts.to_string())?;
     update(destination.as_path(), &contents, mode)?;
 
     Ok(())