ac30247811
* Added a new function to each language to select the backend * Use these new functions in all `pcase`.
115 lines
4.9 KiB
Org Mode
115 lines
4.9 KiB
Org Mode
#+TITLE: Rust layer
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#+TAGS: general|layer|multi-paradigm|programming
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[[file:img/rust.png]]
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* Table of Contents :TOC_5_gh:noexport:
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- [[#description][Description]]
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- [[#features][Features:]]
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- [[#install][Install]]
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- [[#layer][Layer]]
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- [[#choosing-a-backend][Choosing a backend]]
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- [[#racer][Racer]]
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- [[#lsp][LSP]]
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- [[#debugger-dap-integration][Debugger (dap integration)]]
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- [[#cargo][Cargo]]
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- [[#rustfmt][Rustfmt]]
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- [[#key-bindings][Key bindings]]
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- [[#debugger][debugger]]
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* Description
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This layer supports [[https://www.rust-lang.org][Rust]] development in Spacemacs.
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** Features:
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- Auto-completion and navigation support through [[https://github.com/emacs-lsp/lsp-rust][lsp]] or [[https://github.com/phildawes/racer][Racer]]
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- Interactive debugger using [[https://github.com/emacs-lsp/dap-mode][dap-mode]]
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- support for the Rust package manager [[http://doc.crates.io/index.html][Cargo]]
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* Install
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** Layer
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To use this configuration layer, add it to your =~/.spacemacs=. You will need to
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add =rust= to the existing =dotspacemacs-configuration-layers= list in this
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file.
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** Choosing a backend
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To choose a default backend set the layer variable =rust-backend=:
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#+BEGIN_SRC elisp
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(rust :variables rust-backend 'racer)
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#+END_SRC
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Alternatively the =lsp= backend will be automatically chosen if the layer =lsp=
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is used and you did not specify any value for =rust-backend=.
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Backend can be chosen on a per project basis using directory local variables
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(files named =.dir-locals.el= at the root of a project), an example to use the
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=lsp= backend:
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#+BEGIN_SRC elisp
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;;; Directory Local Variables
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;;; For more information see (info "(emacs) Directory Variables")
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((rust-mode (rust-backend . lsp)))
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#+END_SRC
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*Note:* you can easily add a directory local variable with ~SPC f v d~.
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*** Racer
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You must install [[https://github.com/phildawes/racer][Racer]] to use this backend. Make sure the =racer= binary is available in
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your =PATH= and to set the environment variable =RUST_SRC_PATH=, as described in
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the [[https://github.com/phildawes/racer#installation][installation instructions]].
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To enable auto-completion, ensure that the =auto-completion= layer is enabled.
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*** LSP
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You must add =lsp= to the existing =dotspacemacs-configuration-layers= in your =~/.spacemacs=.
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Consult the installation command for the desired language server found at [[https://github.com/emacs-lsp/lsp-mode][lsp-mode]] for instructions.
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To enable auto-completion, ensure that the =auto-completion= layer is enabled.
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**** Debugger (dap integration)
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To install the debug adapter you may run =M-x dap-gdb-lldb-setup= when you are on Linux or download it manually from [[https://marketplace.visualstudio.com/items?itemName=webfreak.debug][Native Debug]] and adjust =dap-gdb-lldb-path=.
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** Cargo
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[[http://doc.crates.io/index.html][Cargo]] is a project management command line tool for Rust. Installation
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instructions can be found on the main page of [[http://doc.crates.io/index.html][Cargo]].
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** Rustfmt
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Format Rust code according to style guidelines using [[https://github.com/rust-lang-nursery/rustfmt][rustfmt]].
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#+BEGIN_SRC sh
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cargo install rustfmt
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#+END_SRC
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To enable automatic buffer formatting on save, set the variable =rust-format-on-save= to =t=.
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* Key bindings
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| Key binding | Description |
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|-------------+---------------------------------------------|
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| ~SPC m = =~ | reformat the buffer |
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| ~SPC m c .~ | repeat the last Cargo command |
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| ~SPC m c C~ | remove build artifacts with Cargo |
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| ~SPC m c X~ | execute a project example with Cargo |
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| ~SPC m c c~ | compile project with Cargo |
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| ~SPC m c d~ | generate documentation with Cargo |
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| ~SPC m c e~ | run benchmarks with Cargo |
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| ~SPC m c f~ | format all project files with rustfmt |
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| ~SPC m c i~ | create a new project with Cargo (init) |
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| ~SPC m c l~ | run linter ([[https://github.com/arcnmx/cargo-clippy][cargo-clippy]]) with Cargo |
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| ~SPC m c n~ | create a new project with Cargo (new) |
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| ~SPC m c o~ | run all tests in current file with Cargo |
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| ~SPC m c s~ | search for packages on crates.io with Cargo |
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| ~SPC m c t~ | run the current test with Cargo |
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| ~SPC m c u~ | update dependencies with Cargo |
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| ~SPC m c x~ | execute a project with Cargo |
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| ~SPC m c v~ | check (verify) a project with Cargo |
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| ~SPC m g g~ | jump to definition |
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| ~SPC m h h~ | describe symbol at point |
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| ~SPC m t~ | run tests with Cargo |
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** debugger
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Using the =dap= layer you'll get access to all the DAP key bindings, see the
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complete list of key bindings on the [[https://github.com/syl20bnr/spacemacs/tree/develop/layers/%2Btools/dap#key-bindings][dap layer description]].
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