381e9ef09e
Update mgca to use `type const` syntax instead of the `#[type_const]` attribute. This PR changes the `#[type_const]` attribute to the `type const` syntax for https://github.com/rust-lang/rust/issues/132980. This will fixes https://github.com/rust-lang/rust/issues/151273 and similar issues, since we need to check `type const` of items before expansion. The move to add a syntax was mentioned here: https://github.com/rust-lang/rust/pull/151289#issuecomment-3765241397 The first part of this PR adds support by allowing `type const <IDENT>: <TYPE> { = <EXPR> };` syntax in `rustc_parse/src/parser/item.rs`. The next part since the AST item does not contain enough information to determine if we have a `type const` was rework `ConstItemRhs` into `ConstItemRhsKind` to store the information since we no longer have the attribute acting as a source of extra data/metadata. The hir node `ConstItemRhsKind` current shape mostly works, except in the case of `TraitItemKind` where it is an option. I initially went about giving `hir::ConstItemRhsKind` a similar form the AST, but it touches a lot more lines of code and files so because of that, the less invasive option was to add a simple boolean flag to `TraitItemKind`. The forth part of this PR includes adding a query I called `is_rhs_type_const` so that we can handle both local and foreign def_ids. The fifth aspect of the PR is adding a `mgca_type_const_syntax` feature gate that is checked before expansion. The standard mgca feature gate is ran after expansion. This feature gate allows for conditional compilation (e.g #[cfg(..)]) of the `type const` syntax in nightly without `min_generic_const_args` being enabled. The last bit is updating all the the tests that used the `#[type_const]` attribute to use the new syntax that failed because of the changes. This is the bulk of touched/edited files in the PR. r? @BoxyUwU @rustbot label +F-associated_const_equality +F-min_generic_const_args |
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| .. | ||
| bootstrap | ||
| build_helper | ||
| ci | ||
| doc | ||
| etc | ||
| gcc@0081ca6631 | ||
| librustdoc | ||
| llvm-project@41256ab128 | ||
| rustc-std-workspace | ||
| rustdoc-json-types | ||
| tools | ||
| README.md | ||
| stage0 | ||
| version | ||
This directory contains some source code for the Rust project, including:
- The bootstrapping build system
- Various submodules for tools, like cargo, tidy, etc.
For more information on how various parts of the compiler work, see the rustc dev guide.