Rollup merge of rust-lang#107023 - scottmcm:stop-shouting, r=Nilstrieb

Stop using `BREAK` & `CONTINUE` in compiler

Switching them to `Break(())` and `Continue(())` instead.

Entirely search-and-replace, though there's one spot where rustfmt insisted on a reformatting too.

libs-api would like to remove these constants (rust-lang#102697 (comment)), so stop using them in compiler to make the removal PR later smaller.

Author: compiler-errors

compiler/rustc_const_eval/src/const_eval/machine.rs

@@ -225,7 +225,7 @@ impl<'mir, 'tcx: 'mir> CompileTimeEvalContext<'mir, 'tcx> {
     /// `align_offset(ptr, target_align)` needs special handling in const eval, because the pointer
     /// may not have an address.
     ///
-    /// If `ptr` does have a known address, then we return `CONTINUE` and the function call should
+    /// If `ptr` does have a known address, then we return `Continue(())` and the function call should
     /// proceed as normal.
     ///
     /// If `ptr` doesn't have an address, but its underlying allocation's alignment is at most
@@ -273,18 +273,18 @@ impl<'mir, 'tcx: 'mir> CompileTimeEvalContext<'mir, 'tcx> {
                         ret,
                         StackPopUnwind::NotAllowed,
                     )?;
-                    Ok(ControlFlow::BREAK)
+                    Ok(ControlFlow::Break(()))
                 } else {
                     // Not alignable in const, return `usize::MAX`.
                     let usize_max = Scalar::from_machine_usize(self.machine_usize_max(), self);
                     self.write_scalar(usize_max, dest)?;
                     self.return_to_block(ret)?;
-                    Ok(ControlFlow::BREAK)
+                    Ok(ControlFlow::Break(()))
                 }
             }
             Err(_addr) => {
                 // The pointer has an address, continue with function call.
-                Ok(ControlFlow::CONTINUE)
+                Ok(ControlFlow::Continue(()))
             }
         }
     }

compiler/rustc_const_eval/src/interpret/util.rs

@@ -26,7 +26,7 @@ where
 
         fn visit_ty(&mut self, ty: Ty<'tcx>) -> ControlFlow<Self::BreakTy> {
             if !ty.needs_subst() {
-                return ControlFlow::CONTINUE;
+                return ControlFlow::Continue(());
             }
 
             match *ty.kind() {
@@ -48,7 +48,7 @@ where
                             return subst.visit_with(self);
                         }
                     }
-                    ControlFlow::CONTINUE
+                    ControlFlow::Continue(())
                 }
                 _ => ty.super_visit_with(self),
             }

compiler/rustc_const_eval/src/lib.rs

@@ -6,7 +6,6 @@ Rust MIR: a lowered representation of Rust.
 
 #![feature(assert_matches)]
 #![feature(box_patterns)]
-#![feature(control_flow_enum)]
 #![feature(decl_macro)]
 #![feature(exact_size_is_empty)]
 #![feature(let_chains)]

compiler/rustc_data_structures/src/graph/iterate/mod.rs

@@ -317,12 +317,12 @@ where
         _node: G::Node,
         _prior_status: Option<NodeStatus>,
     ) -> ControlFlow<Self::BreakVal> {
-        ControlFlow::CONTINUE
+        ControlFlow::Continue(())
     }
 
     /// Called after all nodes reachable from this one have been examined.
     fn node_settled(&mut self, _node: G::Node) -> ControlFlow<Self::BreakVal> {
-        ControlFlow::CONTINUE
+        ControlFlow::Continue(())
     }
 
     /// Behave as if no edges exist from `source` to `target`.
@@ -346,8 +346,8 @@ where
         prior_status: Option<NodeStatus>,
     ) -> ControlFlow<Self::BreakVal> {
         match prior_status {
-            Some(NodeStatus::Visited) => ControlFlow::BREAK,
-            _ => ControlFlow::CONTINUE,
+            Some(NodeStatus::Visited) => ControlFlow::Break(()),
+            _ => ControlFlow::Continue(()),
         }
     }
 }

compiler/rustc_data_structures/src/lib.rs

@@ -11,7 +11,6 @@
 #![feature(associated_type_bounds)]
 #![feature(auto_traits)]
 #![feature(cell_leak)]
-#![feature(control_flow_enum)]
 #![feature(extend_one)]
 #![feature(hash_raw_entry)]
 #![feature(hasher_prefixfree_extras)]

compiler/rustc_hir_analysis/src/check/check.rs

@@ -267,7 +267,7 @@ pub(super) fn check_opaque_for_inheriting_lifetimes(
         fn visit_ty(&mut self, t: Ty<'tcx>) -> ControlFlow<Self::BreakTy> {
             debug!(?t, "root_visit_ty");
             if t == self.opaque_identity_ty {
-                ControlFlow::CONTINUE
+                ControlFlow::Continue(())
             } else {
                 t.visit_with(&mut ConstrainOpaqueTypeRegionVisitor {
                     tcx: self.tcx,
@@ -282,7 +282,7 @@ pub(super) fn check_opaque_for_inheriting_lifetimes(
                 if self.references_parent_regions {
                     ControlFlow::Break(t)
                 } else {
-                    ControlFlow::CONTINUE
+                    ControlFlow::Continue(())
                 }
             }
         }
@@ -1439,7 +1439,7 @@ fn opaque_type_cycle_error(tcx: TyCtxt<'_>, def_id: LocalDefId, span: Span) -> E
                         match *t.kind() {
                             ty::Alias(ty::Opaque, ty::AliasTy { def_id: def, .. }) => {
                                 self.0.push(def);
-                                ControlFlow::CONTINUE
+                                ControlFlow::Continue(())
                             }
                             _ => t.super_visit_with(self),
                         }

compiler/rustc_hir_analysis/src/check/wfcheck.rs

@@ -1428,7 +1428,7 @@ fn check_where_clauses<'tcx>(wfcx: &WfCheckingCtxt<'_, 'tcx>, span: Span, def_id
                 }
 
                 fn visit_region(&mut self, _: ty::Region<'tcx>) -> ControlFlow<Self::BreakTy> {
-                    ControlFlow::BREAK
+                    ControlFlow::Break(())
                 }
 
                 fn visit_const(&mut self, c: ty::Const<'tcx>) -> ControlFlow<Self::BreakTy> {

compiler/rustc_hir_analysis/src/coherence/orphan.rs

@@ -416,13 +416,13 @@ fn fast_reject_auto_impl<'tcx>(tcx: TyCtxt<'tcx>, trait_def_id: DefId, self_ty:
             if t != self.self_ty_root {
                 for impl_def_id in tcx.non_blanket_impls_for_ty(self.trait_def_id, t) {
                     match tcx.impl_polarity(impl_def_id) {
-                        ImplPolarity::Negative => return ControlFlow::BREAK,
+                        ImplPolarity::Negative => return ControlFlow::Break(()),
                         ImplPolarity::Reservation => {}
                         // FIXME(@lcnr): That's probably not good enough, idk
                         //
                         // We might just want to take the rustdoc code and somehow avoid
                         // explicit impls for `Self`.
-                        ImplPolarity::Positive => return ControlFlow::CONTINUE,
+                        ImplPolarity::Positive => return ControlFlow::Continue(()),
                     }
                 }
             }
@@ -440,7 +440,7 @@ fn fast_reject_auto_impl<'tcx>(tcx: TyCtxt<'tcx>, trait_def_id: DefId, self_ty:
                         }
                     }
 
-                    ControlFlow::CONTINUE
+                    ControlFlow::Continue(())
                 }
                 _ => t.super_visit_with(self),
             }

compiler/rustc_hir_analysis/src/constrained_generic_params.rs

@@ -61,7 +61,7 @@ impl<'tcx> TypeVisitor<'tcx> for ParameterCollector {
         match *t.kind() {
             ty::Alias(ty::Projection, ..) if !self.include_nonconstraining => {
                 // projections are not injective
-                return ControlFlow::CONTINUE;
+                return ControlFlow::Continue(());
             }
             ty::Param(data) => {
                 self.parameters.push(Parameter::from(data));
@@ -76,7 +76,7 @@ impl<'tcx> TypeVisitor<'tcx> for ParameterCollector {
         if let ty::ReEarlyBound(data) = *r {
             self.parameters.push(Parameter::from(data));
         }
-        ControlFlow::CONTINUE
+        ControlFlow::Continue(())
     }
 
     fn visit_const(&mut self, c: ty::Const<'tcx>) -> ControlFlow<Self::BreakTy> {

compiler/rustc_hir_analysis/src/variance/mod.rs

@@ -92,7 +92,7 @@ fn variance_of_opaque(tcx: TyCtxt<'_>, item_def_id: LocalDefId) -> &[ty::Varianc
                         a.visit_with(self)?;
                     }
                 }
-                ControlFlow::CONTINUE
+                ControlFlow::Continue(())
             } else {
                 substs.visit_with(self)
             }