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Rollup merge of #108141 - spastorino:add_rpitit_queries, r=compiler-errors

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Add rpitit queries

This is part of the changes we are making to lower RPITITs as an associated type. The rest of the stuff will follow under a `-Z` flag.

I still need to add comments to the code, explain stuff and also I'd need to avoid encoding in metadata when rpitit queries return `&[]`

r? `@compiler-errors`
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Dylan DPC 2023-02-21 14:19:59 +05:30 • committed by GitHub
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11 changed files with 158 additions and 13 deletions
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27
compiler/rustc_middle/src/query/mod.rs
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@ -85,11 +85,10 @@ rustc_queries! {
desc { |tcx| "getting HIR owner of `{}`", tcx.def_path_str(key.to_def_id()) }
}
/// Gives access to the HIR ID for the given `LocalDefId` owner `key`.
/// Gives access to the HIR ID for the given `LocalDefId` owner `key` if any.
///
/// This can be conveniently accessed by methods on `tcx.hir()`.
/// Avoid calling this query directly.
query local_def_id_to_hir_id(key: LocalDefId) -> hir::HirId {
/// Definitions that were generated with no HIR, would be feeded to return `None`.
query opt_local_def_id_to_hir_id(key: LocalDefId) -> Option<hir::HirId>{
desc { |tcx| "getting HIR ID of `{}`", tcx.def_path_str(key.to_def_id()) }
}
@ -767,6 +766,26 @@ rustc_queries! {
desc { |tcx| "comparing impl items against trait for `{}`", tcx.def_path_str(impl_id) }
}
/// Given `fn_def_id` of a trait or of an impl that implements a given trait:
/// if `fn_def_id` is the def id of a function defined inside a trait, then it creates and returns
/// the associated items that correspond to each impl trait in return position for that trait.
/// if `fn_def_id` is the def id of a function defined inside an impl that implements a trait, then it
/// creates and returns the associated items that correspond to each impl trait in return position
/// of the implemented trait.
query associated_items_for_impl_trait_in_trait(fn_def_id: DefId) -> &'tcx [DefId] {
desc { |tcx| "creating associated items for impl trait in trait returned by `{}`", tcx.def_path_str(fn_def_id) }
cache_on_disk_if { fn_def_id.is_local() }
separate_provide_extern
}
/// Given an impl trait in trait `opaque_ty_def_id`, create and return the corresponding
/// associated item.
query associated_item_for_impl_trait_in_trait(opaque_ty_def_id: LocalDefId) -> LocalDefId {
desc { |tcx| "creates the associated item corresponding to the opaque type `{}`", tcx.def_path_str(opaque_ty_def_id.to_def_id()) }
cache_on_disk_if { true }
separate_provide_extern
}
/// Given an `impl_id`, return the trait it implements.
/// Return `None` if this is an inherent impl.
query impl_trait_ref(impl_id: DefId) -> Option<ty::EarlyBinder<ty::TraitRef<'tcx>>> {