163 lines
6.6 KiB
Markdown
163 lines
6.6 KiB
Markdown
The main interface to rust-analyzer is the
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[LSP](https://microsoft.github.io/language-server-protocol/) implementation. To
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install lsp server, use `cargo install-ra --server`, which is a shorthand for `cargo
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install --package ra_lsp_server`. The binary is named `ra_lsp_server`, you
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should be able to use it with any LSP-compatible editor. We use custom
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extensions to LSP, so special client-side support is required to take full
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advantage of rust-analyzer. This repository contains support code for VS Code
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and Emacs.
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Rust Analyzer needs sources of rust standard library to work, so you might need
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to execute
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```
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$ rustup component add rust-src
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```
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See [./features.md](./features.md) document for a list of features that are available.
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## VS Code
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Prerequisites:
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In order to build the VS Code plugin, you need to have node.js and npm with
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a minimum version of 10 installed. Please refer to
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[node.js and npm documentation](https://nodejs.org) for installation instructions.
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You will also need the most recent version of VS Code: we don't try to
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maintain compatibility with older versions yet.
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The experimental VS Code plugin can then be built and installed by executing the
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following commands:
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```
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$ git clone https://github.com/rust-analyzer/rust-analyzer.git --depth 1
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$ cd rust-analyzer
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$ cargo install-ra
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```
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The automatic installation is expected to *just work* for common cases, if it
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doesn't, report bugs!
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If you have an unusual setup (for example, `code` is not in the `PATH`), you
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should adapt these manual installation instructions:
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```
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$ git clone https://github.com/rust-analyzer/rust-analyzer.git --depth 1
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$ cd rust-analyzer
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$ cargo install --path ./crates/ra_lsp_server/ --force
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$ cd ./editors/code
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$ npm install
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$ ./node_modules/vsce/out/vsce package
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$ code --install-extension ./ra-lsp-0.0.1.vsix
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```
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It's better to remove existing Rust plugins to avoid interference.
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Beyond basic LSP features, there are some extension commands which you can
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invoke via <kbd>Ctrl+Shift+P</kbd> or bind to a shortcut. See [./features.md](./features.md)
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for details.
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For updates, pull the latest changes from the master branch, run `cargo install-ra` again, and **restart** VS Code instance.
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See [microsoft/vscode#72308](https://github.com/microsoft/vscode/issues/72308) for why a full restart is needed.
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### Settings
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* `rust-analyzer.highlightingOn`: enables experimental syntax highlighting
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* `rust-analyzer.showWorkspaceLoadedNotification`: to ease troubleshooting, a
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notification is shown by default when a workspace is loaded
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* `rust-analyzer.enableEnhancedTyping`: by default, rust-analyzer intercepts
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`Enter` key to make it easier to continue comments. Note that it may conflict with VIM emulation plugin.
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* `rust-analyzer.raLspServerPath`: path to `ra_lsp_server` executable
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* `rust-analyzer.enableCargoWatchOnStartup`: prompt to install & enable `cargo
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watch` for live error highlighting (note, this **does not** use rust-analyzer)
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* `rust-analyzer.excludeGlobs`: a list of glob-patterns for exclusion (see globset [docs](https://docs.rs/globset) for syntax).
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Note: glob patterns are applied to all Cargo packages and a rooted at a package root.
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This is not very intuitive and a limitation of a current implementation.
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* `rust-analyzer.useClientWatching`: use client provided file watching instead
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of notify watching.
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* `rust-analyzer.cargo-watch.command`: `cargo-watch` command. (e.g: `clippy` will run as `cargo watch -x clippy` )
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* `rust-analyzer.cargo-watch.arguments`: cargo-watch check arguments.
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(e.g: `--features="shumway,pdf"` will run as `cargo watch -x "check --features="shumway,pdf""` )
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* `rust-analyzer.trace.server`: enables internal logging
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* `rust-analyzer.trace.cargo-watch`: enables cargo-watch logging
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* `RUST_SRC_PATH`: environment variable that overwrites the sysroot
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## Emacs
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Prerequisites:
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`emacs-lsp`, `dash` and `ht` packages.
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Installation:
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* add
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[ra-emacs-lsp.el](https://github.com/rust-analyzer/rust-analyzer/blob/69ee5c9c5ef212f7911028c9ddf581559e6565c3/editors/emacs/ra-emacs-lsp.el)
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to load path and require it in `init.el`
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* run `lsp` in a rust buffer
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* (Optionally) bind commands like `rust-analyzer-join-lines` or `rust-analyzer-extend-selection` to keys, and enable `rust-analyzer-inlay-hints-mode` to get inline type hints
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## Vim and NeoVim
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* Install coc.nvim by following the instructions at [coc.nvim]
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- You will need nodejs installed.
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- You may want to include some of the sample vim configurations [from here][coc-vim-conf]
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- Note that if you use a plugin manager other than `vim-plug`, you may need to manually
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checkout the `release` branch wherever your plugin manager cloned it. Otherwise you will
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get errors about a missing javascript file.
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* Run `:CocInstall coc-rust-analyzer` to install [coc-rust-analyzer], this extension implemented _most_ of the features supported in the VSCode extension:
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- same configurations as VSCode extension, `rust-analyzer.raLspServerPath`, `rust-analyzer.enableCargoWatchOnStartup` etc.
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- same commands too, `rust-analyzer.analyzerStatus`, `rust-analyzer.startCargoWatch` etc.
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- highlighting and inlay_hints are not implemented yet
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[coc.nvim]: https://github.com/neoclide/coc.nvim
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[coc-vim-conf]: https://github.com/neoclide/coc.nvim/#example-vim-configuration
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[coc-rust-analyzer]: https://github.com/fannheyward/coc-rust-analyzer
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## Vim and NeoVim Alternative
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* Install LanguageClient-neovim by following the instructions [here][lang-client-neovim]
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- No extra run-time is required as this server is written in Rust
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- The github project wiki has extra tips on configuration
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* Configure by adding this to your vim/neovim config file (replacing the existing rust specific line if it exists):
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```
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let g:LanguageClient_serverCommands = {
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\ 'rust': ['ra_lsp_server'],
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\ }
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```
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[lang-client-neovim]: https://github.com/autozimu/LanguageClient-neovim
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## Sublime Text 3
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Prequisites:
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`LSP` package.
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Installation:
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* Invoke the command palette with <kbd>Ctrl+Shift+P</kbd>
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* Type `LSP Settings` to open the LSP preferences editor
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* Add the following LSP client definition to your settings:
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```json
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"rust-analyzer": {
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"command": ["ra_lsp_server"],
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"languageId": "rust",
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"scopes": ["source.rust"],
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"syntaxes": [
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"Packages/Rust/Rust.sublime-syntax",
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"Packages/Rust Enhanced/RustEnhanced.sublime-syntax"
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]
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}
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```
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* You can now invoke the command palette and type LSP enable to locally/globally enable the rust-analyzer LSP (type LSP enable, then choose either locally or globally, then select rust-analyzer)
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* Note that `ra_lsp_server` binary must be in `$PATH` for this to work. If it's not the case, you can specify full path to the binary, which is typically `.cargo/bin/ra_lsp_server`.
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