7f7c964e47
This commit makes no (intentional) functional change. Previously, the picking process maintained two lists of extra information useful for diagnostics: * any unstable candidates which might have been picked * any unsatisfied predicates Previously, these were dealt with quite differently - the former list was passed around as a function parameter; the latter lived in a RefCell in the ProbeCtxt. With this change we increase consistency by keeping them together in a new PickDiagHints structure, passed as a parameter, with no need for interior mutability. The lifecycle of each of these lists remains fairly complex, so it's explained with new comments in pick_core. A further cleanup here would be to package the widely-used tuple (ty::Predicate<'tcx>, Option<ty::Predicate<'tcx>>, Option<ObligationCause<'tcx>>) into a named struct for UnsatisfiedPredicate. This seems worth doing but it turns out that this tuple is used in dozens of places, so if we're going to do this we should do it as a separate PR to avoid constant rebase trouble. |
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| configure | ||
| CONTRIBUTING.md | ||
| COPYRIGHT | ||
| INSTALL.md | ||
| LICENSE-APACHE | ||
| license-metadata.json | ||
| LICENSE-MIT | ||
| README.md | ||
| RELEASES.md | ||
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This is the main source code repository for Rust. It contains the compiler, standard library, and documentation.
Why Rust?
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Performance: Fast and memory-efficient, suitable for critical services, embedded devices, and easily integrated with other languages.
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Reliability: Our rich type system and ownership model ensure memory and thread safety, reducing bugs at compile-time.
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Productivity: Comprehensive documentation, a compiler committed to providing great diagnostics, and advanced tooling including package manager and build tool (Cargo), auto-formatter (rustfmt), linter (Clippy) and editor support (rust-analyzer).
Quick Start
Read "Installation" from The Book.
Installing from Source
If you really want to install from source (though this is not recommended), see INSTALL.md.
Getting Help
See https://www.rust-lang.org/community for a list of chat platforms and forums.
Contributing
See CONTRIBUTING.md.
License
Rust is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0), with portions covered by various BSD-like licenses.
See LICENSE-APACHE, LICENSE-MIT, and COPYRIGHT for details.
Trademark
The Rust Foundation owns and protects the Rust and Cargo trademarks and logos (the "Rust Trademarks").
If you want to use these names or brands, please read the media guide.
Third-party logos may be subject to third-party copyrights and trademarks. See Licenses for details.