5075c77957
This builds on #2231 but was actually done before that. You see, the cause for #2231 was that I got this error message: Error: Error { kind: Io(Os { code: 2, kind: NotFound, message: "No such file or directory" }) } Just switching to `anyhow::Result` got me stack traces (when setting `RUST_LIB_BACKTRACE=1`) that at least showed stack backtrace: 0: std::backtrace::Backtrace::create 1: std::backtrace::Backtrace::capture 2: anyhow::error::<impl core::convert::From<E> for anyhow::Error>::from 3: xtask::install_server 4: xtask::install 5: xtask::main 6: std::rt::lang_start::{{closure}} 7: std::panicking::try::do_call 8: __rust_maybe_catch_panic 9: std::rt::lang_start_internal 10: std::rt::lang_start 11: main With the added contexts (not at all exhaustive), the error became Error: install server Caused by: 0: build AutoCfg with target directory 1: No such file or directory (os error 2) Since anyhow is such a small thing (no new transitive dependencies!), and in general gives you `Result<T, Box<dyn Error>>` on steroids, I think this a nice small change. The only slightly annoying thing was to replace all the `Err(format!(…))?` calls (haven't even looked at whether we can make it support wrapping strings though), but the `bail!` macro is shorter anyway :)
Rust Analyzer
Rust Analyzer is an experimental modular compiler frontend for the Rust language. It is a part of a larger rls-2.0 effort to create excellent IDE support for Rust. If you want to get involved, check the rls-2.0 working group in the compiler-team repository:
https://github.com/rust-lang/compiler-team/tree/master/content/working-groups/rls-2.0
Work on the Rust Analyzer is sponsored by
Language Server Quick Start
Rust Analyzer is a work-in-progress, so you'll have to build it from source, and you might encounter critical bugs. That said, it is complete enough to provide a useful IDE experience and some people use it as a daily driver.
To build rust-analyzer, you need:
- latest stable rust for language server itself
- latest stable npm and VS Code for VS Code extension
To quickly install rust-analyzer with VS Code extension with standard setup
(code and cargo in $PATH, etc), use this:
# clone the repo
$ git clone https://github.com/rust-analyzer/rust-analyzer && cd rust-analyzer
# install both the language server and VS Code extension
$ cargo xtask install
# alternatively, install only the server. Binary name is `ra_lsp_server`.
$ cargo xtask install --server
For non-standard setup of VS Code and other editors, see ./docs/user.
Documentation
If you want to contribute to rust-analyzer or just curious about how things work under the hood, check the ./docs/dev folder.
If you want to use rust-analyzer's language server with your editor of choice, check ./docs/user folder. It also contains some tips & tricks to help you be more productive when using rust-analyzer.
Getting in touch
We are on the rust-lang Zulip!
https://rust-lang.zulipchat.com/#narrow/stream/185405-t-compiler.2Frls-2.2E0
Quick Links
- Work List: https://paper.dropbox.com/doc/RLS-2.0-work-list--AZ3BgHKKCtqszbsi3gi6sjchAQ-42vbnxzuKq2lKwW0mkn8Y
- API docs: https://rust-analyzer.github.io/rust-analyzer/ra_ide_api/
- CI: https://travis-ci.org/rust-analyzer/rust-analyzer
License
Rust analyzer is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0).
See LICENSE-APACHE and LICENSE-MIT for details.