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| <h1 id="rust-analyzer"><a class="header" href="#rust-analyzer">Rust Analyzer</a></h1> |
| <ul> |
| <li><a href="#rust_analyzer_aspect">rust_analyzer_aspect</a></li> |
| <li><a href="#rust_analyzer_toolchain">rust_analyzer_toolchain</a></li> |
| </ul> |
| <h2 id="overview"><a class="header" href="#overview">Overview</a></h2> |
| <p>For <a href="https://rust-analyzer.github.io/manual.html#non-cargo-based-projects">non-Cargo projects</a>, |
| <a href="https://rust-analyzer.github.io/">rust-analyzer</a> depends on a <code>rust-project.json</code> file at the |
| root of the project that describes its structure. The <code>rust_analyzer</code> rule facilitates generating |
| such a file.</p> |
| <h3 id="setup"><a class="header" href="#setup">Setup</a></h3> |
| <p>First, ensure <code>rules_rust</code> is setup in your workspace. By default, <code>rust_register_toolchains</code> will |
| ensure a <a href="#rust_analyzer_toolchain">rust_analyzer_toolchain</a> is registered within the WORKSPACE.</p> |
| <p>Next, load the dependencies for the <code>rust-project.json</code> generator tool:</p> |
| <pre><code class="language-python">load("@rules_rust//tools/rust_analyzer:deps.bzl", "rust_analyzer_dependencies") |
| |
| rust_analyzer_dependencies() |
| </code></pre> |
| <p>Finally, run <code>bazel run @rules_rust//tools/rust_analyzer:gen_rust_project</code> |
| whenever dependencies change to regenerate the <code>rust-project.json</code> file. It |
| should be added to <code>.gitignore</code> because it is effectively a build artifact. |
| Once the <code>rust-project.json</code> has been generated in the project root, |
| rust-analyzer can pick it up upon restart.</p> |
| <p>For users who do not use <code>rust_register_toolchains</code> to register toolchains, the following can be added |
| to their WORKSPACE to register a <code>rust_analyzer_toolchain</code>. Please make sure the Rust version used in |
| this toolchain matches the version used by the currently registered toolchain or the sources/documentation |
| will not match what's being compiled with and can lead to confusing results.</p> |
| <pre><code class="language-python">load("@rules_rust//rust:repositories.bzl", "rust_analyzer_toolchain_repository") |
| |
| register_toolchains(rust_analyzer_toolchain_repository( |
| name = "rust_analyzer_toolchain", |
| # This should match the currently registered toolchain. |
| version = "1.63.0", |
| )) |
| </code></pre> |
| <h4 id="vscode"><a class="header" href="#vscode">VSCode</a></h4> |
| <p>To set this up using <a href="https://code.visualstudio.com/">VSCode</a>, users should first install the |
| <a href="https://marketplace.visualstudio.com/items?itemName=matklad.rust-analyzer">rust_analyzer plugin</a>. |
| With that in place, the following task can be added to the <code>.vscode/tasks.json</code> file of the workspace |
| to ensure a <code>rust-project.json</code> file is created and up to date when the editor is opened.</p> |
| <pre><code class="language-json">{ |
| "version": "2.0.0", |
| "tasks": [ |
| { |
| "label": "Generate rust-project.json", |
| "command": "bazel", |
| "args": [ |
| "run", |
| "//tools/rust_analyzer:gen_rust_project" |
| ], |
| "options": { |
| "cwd": "${workspaceFolder}" |
| }, |
| "group": "build", |
| "problemMatcher": [], |
| "presentation": { |
| "reveal": "never", |
| "panel": "dedicated", |
| }, |
| "runOptions": { |
| "runOn": "folderOpen" |
| } |
| }, |
| ] |
| } |
| </code></pre> |
| <h4 id="alternative-vscode-option-prototype"><a class="header" href="#alternative-vscode-option-prototype">Alternative vscode option (prototype)</a></h4> |
| <p>Add the following to your bazelrc:</p> |
| <pre><code>build --@rules_rust//rust/settings:rustc_output_diagnostics=true --output_groups=+rust_lib_rustc_output,+rust_metadata_rustc_output |
| </code></pre> |
| <p>Then you can use a prototype <a href="https://marketplace.visualstudio.com/items?itemName=MattStark.bazel-rust-analyzer">rust-analyzer plugin</a> that automatically collects the outputs whenever you recompile.</p> |
| <p><a id="rust_analyzer_toolchain"></a></p> |
| <h2 id="rust_analyzer_toolchain"><a class="header" href="#rust_analyzer_toolchain">rust_analyzer_toolchain</a></h2> |
| <pre> |
| rust_analyzer_toolchain(<a href="#rust_analyzer_toolchain-name">name</a>, <a href="#rust_analyzer_toolchain-proc_macro_srv">proc_macro_srv</a>, <a href="#rust_analyzer_toolchain-rustc">rustc</a>, <a href="#rust_analyzer_toolchain-rustc_srcs">rustc_srcs</a>) |
| </pre> |
| <p>A toolchain for <a href="https://rust-analyzer.github.io/">rust-analyzer</a>.</p> |
| <p><strong>ATTRIBUTES</strong></p> |
| <div class="table-wrapper"><table><thead><tr><th style="text-align: left">Name</th><th style="text-align: left">Description</th><th style="text-align: left">Type</th><th style="text-align: left">Mandatory</th><th style="text-align: left">Default</th></tr></thead><tbody> |
| <tr><td style="text-align: left"><a id="rust_analyzer_toolchain-name"></a>name</td><td style="text-align: left">A unique name for this target.</td><td style="text-align: left"><a href="https://bazel.build/concepts/labels#target-names">Name</a></td><td style="text-align: left">required</td><td style="text-align: left"></td></tr> |
| <tr><td style="text-align: left"><a id="rust_analyzer_toolchain-proc_macro_srv"></a>proc_macro_srv</td><td style="text-align: left">The path to a <code>rust_analyzer_proc_macro_srv</code> binary.</td><td style="text-align: left"><a href="https://bazel.build/concepts/labels">Label</a></td><td style="text-align: left">optional</td><td style="text-align: left"><code>None</code></td></tr> |
| <tr><td style="text-align: left"><a id="rust_analyzer_toolchain-rustc"></a>rustc</td><td style="text-align: left">The path to a <code>rustc</code> binary.</td><td style="text-align: left"><a href="https://bazel.build/concepts/labels">Label</a></td><td style="text-align: left">required</td><td style="text-align: left"></td></tr> |
| <tr><td style="text-align: left"><a id="rust_analyzer_toolchain-rustc_srcs"></a>rustc_srcs</td><td style="text-align: left">The source code of rustc.</td><td style="text-align: left"><a href="https://bazel.build/concepts/labels">Label</a></td><td style="text-align: left">required</td><td style="text-align: left"></td></tr> |
| </tbody></table> |
| </div> |
| <p><a id="rust_analyzer_aspect"></a></p> |
| <h2 id="rust_analyzer_aspect"><a class="header" href="#rust_analyzer_aspect">rust_analyzer_aspect</a></h2> |
| <pre> |
| rust_analyzer_aspect(<a href="#rust_analyzer_aspect-name">name</a>) |
| </pre> |
| <p>Annotates rust rules with RustAnalyzerInfo later used to build a rust-project.json</p> |
| <p><strong>ASPECT ATTRIBUTES</strong></p> |
| <div class="table-wrapper"><table><thead><tr><th style="text-align: left">Name</th><th style="text-align: left">Type</th></tr></thead><tbody> |
| <tr><td style="text-align: left">deps</td><td style="text-align: left">String</td></tr> |
| <tr><td style="text-align: left">proc_macro_deps</td><td style="text-align: left">String</td></tr> |
| <tr><td style="text-align: left">crate</td><td style="text-align: left">String</td></tr> |
| <tr><td style="text-align: left">actual</td><td style="text-align: left">String</td></tr> |
| <tr><td style="text-align: left">proto</td><td style="text-align: left">String</td></tr> |
| </tbody></table> |
| </div> |
| <p><strong>ATTRIBUTES</strong></p> |
| <div class="table-wrapper"><table><thead><tr><th style="text-align: left">Name</th><th style="text-align: left">Description</th><th style="text-align: left">Type</th><th style="text-align: left">Mandatory</th><th style="text-align: left">Default</th></tr></thead><tbody> |
| <tr><td style="text-align: left"><a id="rust_analyzer_aspect-name"></a>name</td><td style="text-align: left">A unique name for this target.</td><td style="text-align: left"><a href="https://bazel.build/concepts/labels#target-names">Name</a></td><td style="text-align: left">required</td><td style="text-align: left"></td></tr> |
| </tbody></table> |
| </div> |
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