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bevy/crates/bevy_ecs_compile_fail_tests
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Boxy eabcd27d93 make WorldQuery very flat (#5205) 
# Objective

Simplify the worldquery trait hierarchy as much as possible by putting it all in one trait. If/when gats are stabilised this can be trivially migrated over to use them, although that's not why I made this PR, those reasons are:
- Moves all of the conceptually related unsafe code for a worldquery next to eachother
- Removes now unnecessary traits simplifying the "type system magic" in bevy_ecs

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## Changelog

All methods/functions/types/consts on `FetchState` and `Fetch` traits have been moved to the `WorldQuery` trait and the other traits removed. `WorldQueryGats` now only contains an `Item` and `Fetch` assoc type.

## Migration Guide
Implementors should move items in impls to the `WorldQuery/Gats` traits and remove any `Fetch`/`FetchState` impls
Any use sites of items in the `Fetch`/`FetchState` traits should be updated to use the `WorldQuery` trait items instead


Co-authored-by: Carter Anderson <mcanders1@gmail.com>
2022-08-04 21:51:02 +00:00
..
src Assert compiler errors for compile_fail tests (#3067) 2021-11-13 22:43:19 +00:00
tests make WorldQuery very flat (#5205) 2022-08-04 21:51:02 +00:00
Cargo.toml Fix release workflow (#4903) 2022-06-06 15:47:51 +00:00
README.md Assert compiler errors for compile_fail tests (#3067) 2021-11-13 22:43:19 +00:00

README.md

Compile fail tests for bevy_ecs

This crate is separate from bevy_ecs and not part of the Bevy workspace in order to not fail crater tests for Bevy. The tests assert on the exact compiler errors and can easily fail for new Rust versions due to updated compiler errors (e.g. changes in spans).

The CI workflow executes these tests on the stable rust toolchain (see tools/ci).