2019-03-20 09:17:12 +00:00
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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-lsp`, 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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2019-03-20 09:21:55 +00:00
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See [./features.md](./features.md) document for a list of features that are available.
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2019-03-20 09:17:12 +00:00
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## VS Code
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2019-02-10 21:09:33 +00:00
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2019-03-13 14:23:22 +00:00
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Prerequisites:
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2019-02-10 21:09:33 +00:00
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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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2019-02-12 15:28:39 +00:00
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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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2019-02-10 21:09:33 +00:00
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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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2018-09-16 12:36:09 +00:00
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```
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2019-01-12 17:02:16 +00:00
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$ git clone https://github.com/rust-analyzer/rust-analyzer.git --depth 1
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2018-12-27 14:56:07 +00:00
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$ cd rust-analyzer
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2018-09-16 12:36:09 +00:00
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$ cargo install-code
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```
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2019-01-13 14:13:54 +00:00
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This will run `cargo install --package ra_lsp_server` to install the server
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2019-01-13 12:04:05 +00:00
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binary into `~/.cargo/bin`, and then will build and install plugin from
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`editors/code`. See
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2019-03-20 09:17:12 +00:00
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[this](https://github.com/rust-analyzer/rust-analyzer/blob/69ee5c9c5ef212f7911028c9ddf581559e6565c3/crates/tools/src/main.rs#L37-L56)
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2019-01-13 12:04:05 +00:00
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for details. The installation is expected to *just work*, if it doesn't, report
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bugs!
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2018-09-16 12:36:09 +00:00
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It's better to remove existing Rust plugins to avoid interference.
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2019-03-20 09:17:12 +00:00
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Beyond basic LSP features, there are some extension commands which you can
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2019-03-20 09:21:55 +00:00
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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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2019-03-20 09:17:12 +00:00
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for details.
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2019-01-13 12:04:05 +00:00
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2019-03-20 09:17:12 +00:00
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### Settings
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2019-01-13 12:04:05 +00:00
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2019-03-20 09:17:12 +00:00
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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
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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.trace.server`: enables internal logging
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2019-01-13 12:04:05 +00:00
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2018-10-09 13:00:20 +00:00
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2019-03-20 09:17:12 +00:00
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## Emacs
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2018-09-16 12:36:09 +00:00
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2019-03-20 09:17:12 +00:00
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Prerequisites:
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2019-01-13 14:13:54 +00:00
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2019-03-20 09:17:12 +00:00
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`emacs-lsp`, `dash` and `ht` packages.
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2019-01-13 14:13:54 +00:00
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2019-03-20 09:17:12 +00:00
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Installation:
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2019-01-13 14:13:54 +00:00
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2019-03-20 09:17:12 +00:00
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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 `join-lines` or `extend-selection` to keys
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