Add const generics support for pattern types #123689
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HIR ty lowering was modified cc @fmease |
oli-obk
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Apr 9, 2024
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| res: Res::Def(DefKind::ConstParam, def_id), .. | ||
| }, | ||
| )) => { | ||
| let ty = tcx.type_of(def_id).instantiate_identity(); |
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| let ty = tcx.type_of(def_id).instantiate_identity(); | |
| let ty = tcx.type_of(def_id).no_bound_vars().expect("const parameter types cannot be generic"); |
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Ideally we would factor out the logic common between this code path here and lower_const_param 🤔, not blocking though
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Slowly wondering if we should just use entirely new hir nodes so we can just use AnonConst like other type system consts
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@bors r+ rollup |
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…llaumeGomez Rollup of 7 pull requests Successful merges: - rust-lang#118391 (Add `REDUNDANT_LIFETIMES` lint to detect lifetimes which are semantically redundant) - rust-lang#123534 (Windows: set main thread name without re-encoding) - rust-lang#123659 (Add support to intrinsics fallback body) - rust-lang#123689 (Add const generics support for pattern types) - rust-lang#123701 (Only assert for child/parent projection compatibility AFTER checking that theyre coming from the same place) - rust-lang#123702 (Further cleanup cfgs in the UI test suite) - rust-lang#123706 (rustdoc: reduce per-page HTML overhead) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of rust-lang#123689 - spastorino:pattern_types_const_generics, r=oli-obk Add const generics support for pattern types r? `@oli-obk`
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…, r=compiler-errors Call lower_const_param instead of duplicating the code Follow up of rust-lang#123689 r? `@oli-obk` I had this commit in my old branch that I had forgotten about, `@fmease` pointed about this in rust-lang#123689 I've left the branches that are not `Range` as do nothing as that's what we are currently doing but maybe we want to err or something.
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Rollup merge of rust-lang#123738 - spastorino:reuse-lower-const-param, r=compiler-errors Call lower_const_param instead of duplicating the code Follow up of rust-lang#123689 r? `@oli-obk` I had this commit in my old branch that I had forgotten about, `@fmease` pointed about this in rust-lang#123689 I've left the branches that are not `Range` as do nothing as that's what we are currently doing but maybe we want to err or something.
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| &hir::Path { | ||
| res: Res::Def(DefKind::ConstParam, def_id), .. | ||
| }, | ||
| )) => { |
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Note that we're missing a call to prohibit_generic_args here. Right now, we permit:
pattern_type!(u32 is START::<(), i32, 2>..=END::<_>)where START and END are u32s like in the UI test.
While we could add this check, this just reinforces oli's point: #123689 (comment), Zulip discussion.
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Just noticed this while reviewing an unrelated PR.
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r? @oli-obk