1 files changed, 0 insertions, 183 deletions
diff --git a/compiler/rustc_typeck/src/check/inherited.rs b/compiler/rustc_typeck/src/check/inherited.rs
deleted file mode 100644
index cd152eb97..000000000
--- a/compiler/rustc_typeck/src/check/inherited.rs
+++ /dev/null
@@ -1,183 +0,0 @@
-use super::callee::DeferredCallResolution;
-
-use rustc_data_structures::fx::FxHashSet;
-use rustc_hir as hir;
-use rustc_hir::def_id::LocalDefId;
-use rustc_hir::HirIdMap;
-use rustc_infer::infer;
-use rustc_infer::infer::{InferCtxt, InferOk, TyCtxtInferExt};
-use rustc_middle::ty::fold::TypeFoldable;
-use rustc_middle::ty::visit::TypeVisitable;
-use rustc_middle::ty::{self, Ty, TyCtxt};
-use rustc_span::def_id::LocalDefIdMap;
-use rustc_span::{self, Span};
-use rustc_trait_selection::infer::InferCtxtExt as _;
-use rustc_trait_selection::traits::{self, ObligationCause, TraitEngine, TraitEngineExt};
-
-use std::cell::RefCell;
-use std::ops::Deref;
-
-/// Closures defined within the function. For example:
-/// ```ignore (illustrative)
-/// fn foo() {
-///     bar(move|| { ... })
-/// }
-/// ```
-/// Here, the function `foo()` and the closure passed to
-/// `bar()` will each have their own `FnCtxt`, but they will
-/// share the inherited fields.
-pub struct Inherited<'a, 'tcx> {
-    pub(super) infcx: InferCtxt<'a, 'tcx>,
-
-    pub(super) typeck_results: &'a RefCell<ty::TypeckResults<'tcx>>,
-
-    pub(super) locals: RefCell<HirIdMap<super::LocalTy<'tcx>>>,
-
-    pub(super) fulfillment_cx: RefCell<Box<dyn TraitEngine<'tcx>>>,
-
-    // Some additional `Sized` obligations badly affect type inference.
-    // These obligations are added in a later stage of typeck.
-    pub(super) deferred_sized_obligations:
-        RefCell<Vec<(Ty<'tcx>, Span, traits::ObligationCauseCode<'tcx>)>>,
-
-    // When we process a call like `c()` where `c` is a closure type,
-    // we may not have decided yet whether `c` is a `Fn`, `FnMut`, or
-    // `FnOnce` closure. In that case, we defer full resolution of the
-    // call until upvar inference can kick in and make the
-    // decision. We keep these deferred resolutions grouped by the
-    // def-id of the closure, so that once we decide, we can easily go
-    // back and process them.
-    pub(super) deferred_call_resolutions: RefCell<LocalDefIdMap<Vec<DeferredCallResolution<'tcx>>>>,
-
-    pub(super) deferred_cast_checks: RefCell<Vec<super::cast::CastCheck<'tcx>>>,
-
-    pub(super) deferred_transmute_checks: RefCell<Vec<(Ty<'tcx>, Ty<'tcx>, Span)>>,
-
-    pub(super) deferred_asm_checks: RefCell<Vec<(&'tcx hir::InlineAsm<'tcx>, hir::HirId)>>,
-
-    pub(super) deferred_generator_interiors:
-        RefCell<Vec<(hir::BodyId, Ty<'tcx>, hir::GeneratorKind)>>,
-
-    pub(super) body_id: Option<hir::BodyId>,
-
-    /// Whenever we introduce an adjustment from `!` into a type variable,
-    /// we record that type variable here. This is later used to inform
-    /// fallback. See the `fallback` module for details.
-    pub(super) diverging_type_vars: RefCell<FxHashSet<Ty<'tcx>>>,
-}
-
-impl<'a, 'tcx> Deref for Inherited<'a, 'tcx> {
-    type Target = InferCtxt<'a, 'tcx>;
-    fn deref(&self) -> &Self::Target {
-        &self.infcx
-    }
-}
-
-/// A temporary returned by `Inherited::build(...)`. This is necessary
-/// for multiple `InferCtxt` to share the same `in_progress_typeck_results`
-/// without using `Rc` or something similar.
-pub struct InheritedBuilder<'tcx> {
-    infcx: infer::InferCtxtBuilder<'tcx>,
-    def_id: LocalDefId,
-}
-
-impl<'tcx> Inherited<'_, 'tcx> {
-    pub fn build(tcx: TyCtxt<'tcx>, def_id: LocalDefId) -> InheritedBuilder<'tcx> {
-        let hir_owner = tcx.hir().local_def_id_to_hir_id(def_id).owner;
-
-        InheritedBuilder {
-            infcx: tcx
-                .infer_ctxt()
-                .ignoring_regions()
-                .with_fresh_in_progress_typeck_results(hir_owner),
-            def_id,
-        }
-    }
-}
-
-impl<'tcx> InheritedBuilder<'tcx> {
-    pub fn enter<F, R>(&mut self, f: F) -> R
-    where
-        F: for<'a> FnOnce(Inherited<'a, 'tcx>) -> R,
-    {
-        let def_id = self.def_id;
-        self.infcx.enter(|infcx| f(Inherited::new(infcx, def_id)))
-    }
-}
-
-impl<'a, 'tcx> Inherited<'a, 'tcx> {
-    fn new(infcx: InferCtxt<'a, 'tcx>, def_id: LocalDefId) -> Self {
-        let tcx = infcx.tcx;
-        let body_id = tcx.hir().maybe_body_owned_by(def_id);
-        let typeck_results =
-            infcx.in_progress_typeck_results.expect("building `FnCtxt` without typeck results");
-
-        Inherited {
-            typeck_results,
-            infcx,
-            fulfillment_cx: RefCell::new(<dyn TraitEngine<'_>>::new(tcx)),
-            locals: RefCell::new(Default::default()),
-            deferred_sized_obligations: RefCell::new(Vec::new()),
-            deferred_call_resolutions: RefCell::new(Default::default()),
-            deferred_cast_checks: RefCell::new(Vec::new()),
-            deferred_transmute_checks: RefCell::new(Vec::new()),
-            deferred_asm_checks: RefCell::new(Vec::new()),
-            deferred_generator_interiors: RefCell::new(Vec::new()),
-            diverging_type_vars: RefCell::new(Default::default()),
-            body_id,
-        }
-    }
-
-    #[instrument(level = "debug", skip(self))]
-    pub(super) fn register_predicate(&self, obligation: traits::PredicateObligation<'tcx>) {
-        if obligation.has_escaping_bound_vars() {
-            span_bug!(obligation.cause.span, "escaping bound vars in predicate {:?}", obligation);
-        }
-        self.fulfillment_cx.borrow_mut().register_predicate_obligation(self, obligation);
-    }
-
-    pub(super) fn register_predicates<I>(&self, obligations: I)
-    where
-        I: IntoIterator<Item = traits::PredicateObligation<'tcx>>,
-    {
-        for obligation in obligations {
-            self.register_predicate(obligation);
-        }
-    }
-
-    pub(super) fn register_infer_ok_obligations<T>(&self, infer_ok: InferOk<'tcx, T>) -> T {
-        self.register_predicates(infer_ok.obligations);
-        infer_ok.value
-    }
-
-    pub(super) fn normalize_associated_types_in<T>(
-        &self,
-        span: Span,
-        body_id: hir::HirId,
-        param_env: ty::ParamEnv<'tcx>,
-        value: T,
-    ) -> T
-    where
-        T: TypeFoldable<'tcx>,
-    {
-        self.normalize_associated_types_in_with_cause(
-            ObligationCause::misc(span, body_id),
-            param_env,
-            value,
-        )
-    }
-
-    pub(super) fn normalize_associated_types_in_with_cause<T>(
-        &self,
-        cause: ObligationCause<'tcx>,
-        param_env: ty::ParamEnv<'tcx>,
-        value: T,
-    ) -> T
-    where
-        T: TypeFoldable<'tcx>,
-    {
-        let ok = self.partially_normalize_associated_types_in(cause, param_env, value);
-        debug!(?ok);
-        self.register_infer_ok_obligations(ok)
-    }
-}