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Chromium: Expand speaker notes for Rust Analyzer demo (#1537)

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Lukasz Anforowicz 2023-12-01 08:25:29 +00:00 committed by GitHub
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src/chromium/build-rules/vscode.md
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@ -12,6 +12,27 @@ for C++. Visual Studio code works well for Rust in Chromium. To use it,
<img src="vscode.png" style="border: 1px solid black;" alt="Example screenshot from VSCode"> <img src="vscode.png" style="border: 1px solid black;" alt="Example screenshot from VSCode">
<details> <details>
A demo of some of the code annotation and exploration features of rust-analyzer might be A demo of some of the code annotation and exploration features of rust-analyzer might be
beneficial if the audience are naturally skeptical of IDEs. beneficial if the audience are naturally skeptical of IDEs.
The following steps may help with the demo (but feel free to instead use a piece
of Chromium-related Rust that you are most familiar with):
* Open `components/qr_code_generator/qr_code_generator_ffi_glue.rs`
* Place the cursor over the `QrCode::new` call (around line 26) in
`qr_code_generator_ffi_glue.rs
* Demo **show documentation** (typical bindings: vscode = ctrl k i; vim/CoC = K).
* Demo **go to definition** (typical bindings: vscode = F12; vim/CoC = g d).
(This will take you to `//third_party/rust/.../qr_code-.../src/lib.rs`.)
* Demo **outline** and navigate to the `QrCode::with_bits` method (around line
164; the outline is in the file explorer pane in vscode; typical vim/CoC
bindings = space o)
* Demo **type annotations** (there are quote a few nice examples in the
`QrCode::with_bits` method)
It may be worth pointing out that `gn gen ... --export-rust-project` will need
to be rerun after editing `BUILD.gn` files (which we will do a few times
throughout the exercises in this session).
</details> </details>