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Add documentation for TyCtxt::visibility #101765

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Sep 13, 2022
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Add documentation for TyCtxt::visibility #101765

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10 changes: 10 additions & 0 deletions compiler/rustc_middle/src/query/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1611,6 +1611,16 @@ rustc_queries! {
desc { "looking up late bound vars" }
}

/// Computes the visibility of the provided `def_id`.
///
/// If the item from the `def_id` doesn't have a visibility, it will panic. For example
/// a generic type parameter will panic if you call this method on it:
///
/// ```
/// pub trait Foo<T: Debug> {}
/// ```
///
/// In here, if you call `visibility` on `T`, it'll panic.
query visibility(def_id: DefId) -> ty::Visibility<DefId> {
desc { |tcx| "computing visibility of `{}`", tcx.def_path_str(def_id) }
separate_provide_extern
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