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Diffstat (limited to 'book/en/src/by-example/tips_view_code.md')
| -rw-r--r-- | book/en/src/by-example/tips_view_code.md | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/book/en/src/by-example/tips_view_code.md b/book/en/src/by-example/tips_view_code.md index 736b7ac..b4a9066 100644 --- a/book/en/src/by-example/tips_view_code.md +++ b/book/en/src/by-example/tips_view_code.md @@ -1,21 +1,19 @@ # Inspecting generated code -`#[rtic::app]` is a procedural macro that produces support code. If for some -reason you need to inspect the code generated by this macro you have two -options: +`#[rtic::app]` is a procedural macro that produces support code. If for some reason you need to inspect the code generated by this macro you have two options: -You can inspect the file `rtic-expansion.rs` inside the `target` directory. This -file contains the expansion of the `#[rtic::app]` item (not your whole program!) -of the *last built* (via `cargo build` or `cargo check`) RTIC application. The -expanded code is not pretty printed by default, so you'll want to run `rustfmt` -on it before you read it. +You can inspect the file `rtic-expansion.rs` inside the `target` directory. This file contains the expansion of the `#[rtic::app]` item (not your whole program!) of the *last built* (via `cargo build` or `cargo check`) RTIC application. The expanded code is not pretty printed by default, so you'll want to run `rustfmt` on it before you read it. ``` console -$ cargo build --example foo +$ cargo build --example smallest --target thumbv7m-none-eabi +``` +``` console $ rustfmt target/rtic-expansion.rs +``` -tail target/rtic-expansion.rs +``` console +$ tail target/rtic-expansion.rs ``` ``` rust @@ -36,13 +34,14 @@ mod app { } ``` -Or, you can use the [`cargo-expand`] sub-command. This sub-command will expand -*all* the macros, including the `#[rtic::app]` attribute, and modules in your -crate and print the output to the console. +Or, you can use the [`cargo-expand`] sub-command. This sub-command will expand *all* the macros, including the `#[rtic::app]` attribute, and modules in your crate and print the output to the console. [`cargo-expand`]: https://crates.io/crates/cargo-expand ``` console # produces the same output as before +``` + +``` console cargo expand --example smallest | tail ``` |