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make reg public and add visit, fold
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5dc2214884
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@ -4,7 +4,7 @@ use crate::Opaque;
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use super::ty::{
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Allocation, Binder, Const, ConstDef, ConstantKind, ExistentialPredicate, FnSig, GenericArgKind,
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GenericArgs, Promoted, RigidTy, TermKind, Ty, TyKind, UnevaluatedConst,
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GenericArgs, Promoted, Region, RigidTy, TermKind, Ty, TyKind, UnevaluatedConst,
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};
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pub trait Folder: Sized {
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@ -106,6 +106,12 @@ impl Foldable for GenericArgs {
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}
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}
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impl Foldable for Region {
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fn super_fold<V: Folder>(&self, _folder: &mut V) -> ControlFlow<V::Break, Self> {
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ControlFlow::Continue(self.clone())
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}
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}
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impl Foldable for GenericArgKind {
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fn super_fold<V: Folder>(&self, folder: &mut V) -> ControlFlow<V::Break, Self> {
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let mut this = self.clone();
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@ -34,10 +34,13 @@ pub struct Const {
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}
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type Ident = Opaque;
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pub(crate) struct Region {
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#[derive(Debug, Clone)]
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pub struct Region {
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pub kind: RegionKind,
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}
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#[derive(Debug, Clone)]
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pub enum RegionKind {
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ReEarlyBound(EarlyBoundRegion),
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ReLateBound(DebruijnIndex, BoundRegion),
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@ -51,6 +54,7 @@ pub enum RegionKind {
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pub(crate) type DebruijnIndex = u32;
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#[derive(Debug, Clone)]
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pub struct EarlyBoundRegion {
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pub def_id: RegionDef,
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pub index: u32,
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@ -59,11 +63,13 @@ pub struct EarlyBoundRegion {
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pub(crate) type BoundVar = u32;
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#[derive(Debug, Clone)]
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pub struct BoundRegion {
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pub var: BoundVar,
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pub kind: BoundRegionKind,
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}
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#[derive(Debug, Clone)]
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pub struct FreeRegion {
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pub scope: RegionDef,
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pub bound_region: BoundRegionKind,
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@ -73,6 +79,7 @@ pub(crate) type RegionVid = u32;
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pub(crate) type UniverseIndex = u32;
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#[derive(Debug, Clone)]
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pub struct Placeholder<T> {
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pub universe: UniverseIndex,
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pub bound: T,
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@ -4,7 +4,7 @@ use crate::Opaque;
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use super::ty::{
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Allocation, Binder, Const, ConstDef, ExistentialPredicate, FnSig, GenericArgKind, GenericArgs,
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Promoted, RigidTy, TermKind, Ty, UnevaluatedConst,
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Promoted, Region, RigidTy, TermKind, Ty, UnevaluatedConst,
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};
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pub trait Visitor: Sized {
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@ -101,6 +101,12 @@ impl Visitable for GenericArgs {
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}
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}
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impl Visitable for Region {
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fn super_visit<V: Visitor>(&self, _visitor: &mut V) -> ControlFlow<V::Break> {
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ControlFlow::Continue(())
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}
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}
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impl Visitable for GenericArgKind {
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fn super_visit<V: Visitor>(&self, visitor: &mut V) -> ControlFlow<V::Break> {
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match self {
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