Gino Valente 8039f34b0d bevy_ecs: Replace panics in QueryData derive compile errors (#15691) ... # Objective The current `QueryData` derive panics when it encounters an error. Additionally, it doesn't provide the clearest error message: ```rust #[derive(QueryData)] #[query_data(mut)] struct Foo { // ... } ``` ``` error: proc-macro derive panicked --> src/foo.rs:16:10 | 16 | #[derive(QueryData)] | ^^^^^^^^^ | = help: message: Invalid `query_data` attribute format ``` ## Solution Updated the derive logic to not panic and gave a bit more detail in the error message. This is makes the error message just a bit clearer and maintains the correct span: ``` error: invalid attribute, expected `mutable` or `derive` --> src/foo.rs:17:14 | 17 | #[query_data(mut)] | ^^^ ``` ## Testing You can test locally by running the following in `crates/bevy_ecs/compile_fail`: ``` cargo test --target-dir ../../../target ```		2024-10-07 16:30:34 +00:00
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src	bevy_ecs: Replace panics in QueryData derive compile errors (#15691)	2024-10-07 16:30:34 +00:00
Cargo.toml	Generate links to definition in source code pages on docs.rs and dev-docs.bevyengine.org (#12965)	2024-07-29 23:10:16 +00:00