WIP: move to xtasks

1 files changed, 218 insertions, 0 deletions

diff --git a/xtask/src/main.rs b/xtask/src/main.rs
new file mode 100644
index 000000000..623058436
--- /dev/null
+++ b/xtask/src/main.rs
@@ -0,0 +1,218 @@
+//! FIXME: write short doc here
+
+mod help;
+
+use core::fmt::Write;
+use core::str;
+use pico_args::Arguments;
+use std::{env, path::PathBuf};
+use xtask::{
+    gen_tests, generate_boilerplate, install_format_hook, run, run_clippy, run_fuzzer, run_rustfmt,
+    Cmd, Overwrite, Result,
+};
+
+struct InstallOpt {
+    client: Option<ClientOpt>,
+    server: Option<ServerOpt>,
+}
+
+enum ClientOpt {
+    VsCode,
+}
+
+struct ServerOpt {
+    jemalloc: bool,
+}
+
+fn main() -> Result<()> {
+    let subcommand = match std::env::args_os().nth(1) {
+        None => {
+            eprintln!("{}", help::GLOBAL_HELP);
+            return Ok(());
+        }
+        Some(s) => s,
+    };
+    let mut matches = Arguments::from_vec(std::env::args_os().skip(2).collect());
+    let subcommand = &*subcommand.to_string_lossy();
+    match subcommand {
+        "install" => {
+            if matches.contains(["-h", "--help"]) {
+                eprintln!("{}", help::INSTALL_HELP);
+                return Ok(());
+            }
+            let server = matches.contains("--server");
+            let client_code = matches.contains("--client-code");
+            if server && client_code {
+                eprintln!("{}", help::INSTALL_RA_CONFLICT);
+                return Ok(());
+            }
+            let jemalloc = matches.contains("--jemalloc");
+            matches.finish().or_else(handle_extra_flags)?;
+            let opts = InstallOpt {
+                client: if server { None } else { Some(ClientOpt::VsCode) },
+                server: if client_code { None } else { Some(ServerOpt { jemalloc: jemalloc }) },
+            };
+            install(opts)?
+        }
+        "gen-tests" => {
+            if matches.contains(["-h", "--help"]) {
+                help::print_no_param_subcommand_help(&subcommand);
+                return Ok(());
+            }
+            gen_tests(Overwrite)?
+        }
+        "codegen" => {
+            if matches.contains(["-h", "--help"]) {
+                help::print_no_param_subcommand_help(&subcommand);
+                return Ok(());
+            }
+            generate_boilerplate(Overwrite)?
+        }
+        "format" => {
+            if matches.contains(["-h", "--help"]) {
+                help::print_no_param_subcommand_help(&subcommand);
+                return Ok(());
+            }
+            run_rustfmt(Overwrite)?
+        }
+        "format-hook" => {
+            if matches.contains(["-h", "--help"]) {
+                help::print_no_param_subcommand_help(&subcommand);
+                return Ok(());
+            }
+            install_format_hook()?
+        }
+        "lint" => {
+            if matches.contains(["-h", "--help"]) {
+                help::print_no_param_subcommand_help(&subcommand);
+                return Ok(());
+            }
+            run_clippy()?
+        }
+        "fuzz-tests" => {
+            if matches.contains(["-h", "--help"]) {
+                help::print_no_param_subcommand_help(&subcommand);
+                return Ok(());
+            }
+            run_fuzzer()?
+        }
+        _ => eprintln!("{}", help::GLOBAL_HELP),
+    }
+    Ok(())
+}
+
+fn handle_extra_flags(e: pico_args::Error) -> Result<()> {
+    if let pico_args::Error::UnusedArgsLeft(flags) = e {
+        let mut invalid_flags = String::new();
+        for flag in flags {
+            write!(&mut invalid_flags, "{}, ", flag)?;
+        }
+        let (invalid_flags, _) = invalid_flags.split_at(invalid_flags.len() - 2);
+        Err(format!("Invalid flags: {}", invalid_flags).into())
+    } else {
+        Err(e.to_string().into())
+    }
+}
+
+fn install(opts: InstallOpt) -> Result<()> {
+    if cfg!(target_os = "macos") {
+        fix_path_for_mac()?
+    }
+    if let Some(server) = opts.server {
+        install_server(server)?;
+    }
+    if let Some(client) = opts.client {
+        install_client(client)?;
+    }
+    Ok(())
+}
+
+fn fix_path_for_mac() -> Result<()> {
+    let mut vscode_path: Vec<PathBuf> = {
+        const COMMON_APP_PATH: &str =
+            r"/Applications/Visual Studio Code.app/Contents/Resources/app/bin";
+        const ROOT_DIR: &str = "";
+        let home_dir = match env::var("HOME") {
+            Ok(home) => home,
+            Err(e) => Err(format!("Failed getting HOME from environment with error: {}.", e))?,
+        };
+
+        [ROOT_DIR, &home_dir]
+            .iter()
+            .map(|dir| String::from(*dir) + COMMON_APP_PATH)
+            .map(PathBuf::from)
+            .filter(|path| path.exists())
+            .collect()
+    };
+
+    if !vscode_path.is_empty() {
+        let vars = match env::var_os("PATH") {
+            Some(path) => path,
+            None => Err("Could not get PATH variable from env.")?,
+        };
+
+        let mut paths = env::split_paths(&vars).collect::<Vec<_>>();
+        paths.append(&mut vscode_path);
+        let new_paths = env::join_paths(paths)?;
+        env::set_var("PATH", &new_paths);
+    }
+
+    Ok(())
+}
+
+fn install_client(ClientOpt::VsCode: ClientOpt) -> Result<()> {
+    Cmd { unix: r"npm ci", windows: r"cmd.exe /c npm.cmd ci", work_dir: "./editors/code" }.run()?;
+    Cmd {
+        unix: r"npm run package",
+        windows: r"cmd.exe /c npm.cmd run package",
+        work_dir: "./editors/code",
+    }
+    .run()?;
+
+    let code_binary = ["code", "code-insiders", "codium"].iter().find(|bin| {
+        Cmd {
+            unix: &format!("{} --version", bin),
+            windows: &format!("cmd.exe /c {}.cmd --version", bin),
+            work_dir: "./editors/code",
+        }
+        .run()
+        .is_ok()
+    });
+
+    let code_binary = match code_binary {
+        Some(it) => it,
+        None => Err("Can't execute `code --version`. Perhaps it is not in $PATH?")?,
+    };
+
+    Cmd {
+        unix: &format!(r"{} --install-extension ./ra-lsp-0.0.1.vsix --force", code_binary),
+        windows: &format!(
+            r"cmd.exe /c {}.cmd --install-extension ./ra-lsp-0.0.1.vsix --force",
+            code_binary
+        ),
+        work_dir: "./editors/code",
+    }
+    .run()?;
+
+    let output = Cmd {
+        unix: &format!(r"{} --list-extensions", code_binary),
+        windows: &format!(r"cmd.exe /c {}.cmd --list-extensions", code_binary),
+        work_dir: ".",
+    }
+    .run_with_output()?;
+
+    if !str::from_utf8(&output.stdout)?.contains("ra-lsp") {
+        Err("Could not install the Visual Studio Code extension. \
+             Please make sure you have at least NodeJS 10.x installed and try again.")?;
+    }
+
+    Ok(())
+}
+
+fn install_server(opts: ServerOpt) -> Result<()> {
+    if opts.jemalloc {
+        run("cargo install --path crates/ra_lsp_server --locked --force --features jemalloc", ".")
+    } else {
+        run("cargo install --path crates/ra_lsp_server --locked --force", ".")
+    }
+}