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* Improve `debug_handler` to use the correct span for specific bounds This results in better localised error messages, as they now point directly to the corresponding argument instead of to the macro itself. * Improve some error messages behind a `nightly-error-messages` feature flag This uses the nightly only `rustc_on_unimplemented` attribute to improve some error messages when users try to use invalid handler functions. This should be seen as prove of concept, not as full solution for all potential error cases. The underlying feature is currently marked as permanently unstable, but I'm working on getting this specific attribute (or an attribute with different name, similar functionality) ready to work on a stable compiler. * Apply suggestions from code review Co-authored-by: Jonas Platte <jplatte+git@posteo.de> * Enable the `nightly-error-messages` feature unconditionally for nightly compilers * Use a nightly compiler to run the axum-marcos compile fail tests * update to newer nightly * Run axum-macros tests on nightly * tweak compile error hints a bit * more tweaks * update test Co-authored-by: Jonas Platte <jplatte+git@posteo.de> Co-authored-by: David Pedersen <david.pdrsn@gmail.com>
24 lines
1.3 KiB
Text
24 lines
1.3 KiB
Text
error[E0277]: the trait bound `bool: FromRequestParts<()>` is not satisfied
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--> tests/debug_handler/fail/argument_not_extractor.rs:4:23
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4 | async fn handler(foo: bool) {}
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| ^^^^ the trait `FromRequestParts<()>` is not implemented for `bool`
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= note: Function argument is not a valid axum extractor.
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See `https://docs.rs/axum/latest/axum/extract/index.html` for details
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= help: the following other types implement trait `FromRequestParts<S>`:
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<() as FromRequestParts<S>>
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<(T1, T2) as FromRequestParts<S>>
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<(T1, T2, T3) as FromRequestParts<S>>
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<(T1, T2, T3, T4) as FromRequestParts<S>>
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<(T1, T2, T3, T4, T5) as FromRequestParts<S>>
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<(T1, T2, T3, T4, T5, T6) as FromRequestParts<S>>
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<(T1, T2, T3, T4, T5, T6, T7) as FromRequestParts<S>>
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<(T1, T2, T3, T4, T5, T6, T7, T8) as FromRequestParts<S>>
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and 25 others
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= note: required for `bool` to implement `FromRequest<(), Body, axum_core::extract::private::ViaParts>`
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note: required by a bound in `__axum_macros_check_handler_0_from_request_check`
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--> tests/debug_handler/fail/argument_not_extractor.rs:4:23
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4 | async fn handler(foo: bool) {}
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| ^^^^ required by this bound in `__axum_macros_check_handler_0_from_request_check`
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