2217: Implement FromStr for enum Edition r=matklad a=clemarescx
Just did this as I came across the comment in the code asking for implementing `std::str::FromStr` for `input::Edition`.
Not sure what was meant by "proper error handling" though, `panic!` with a descriptive message might not be it 😅
Co-authored-by: Metabaron <metabaron@tuta.io>
2200: Add variables to HIR r=matklad a=matklad
Introduce a `hir::Variable`, which should cover locals, parameters and `self`. Unlike `PatId`, variable knows it's owner so it is self-contained, and should be more convenient to use from `ra_ide_api`.
The goal here is to hide more details about `Body` from hir, which should make it easier to move `Body` into `hir_def`. I don't think that `ra_ide_api` intrracts with bodies directly at the moment anyway, but the glue layer is based basically on `ast::BindPat`, which seems pretty brittle.
Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>
2205: Implement bulitin line! macro r=matklad a=edwin0cheng
This PR implements bulitin macro `line!` and add basic infra-structure for other bulitin macros:
1. Extend `MacroDefId` to support builtin macros
2. Add a `quote!` macro for simple quasi quoting.
Note that for support others builtin macros, eager macro expansion have to be supported first, this PR not try to handle it. :)
Co-authored-by: Edwin Cheng <edwin0cheng@gmail.com>
This removes the special casing for the "core" prelude.
Whenever a later dependency also exports a prelude, it will replace
the formerly imported prelude. The utilized prelude then depends
purely on import order.
