698 lines
23 KiB
Rust
698 lines
23 KiB
Rust
//! This module contains implementations of the `Lift`, `TypeFoldable` and
|
|
//! `TypeVisitable` traits for various types in the Rust compiler. Most are
|
|
//! written by hand, though we've recently added some macros and proc-macros
|
|
//! to help with the tedium.
|
|
|
|
use crate::mir::interpret;
|
|
use crate::mir::ProjectionKind;
|
|
use crate::ty::fold::{FallibleTypeFolder, TypeFoldable, TypeSuperFoldable};
|
|
use crate::ty::print::{with_no_trimmed_paths, FmtPrinter, Printer};
|
|
use crate::ty::visit::{TypeSuperVisitable, TypeVisitable, TypeVisitor};
|
|
use crate::ty::{self, AliasTy, InferConst, Lift, Term, TermKind, Ty, TyCtxt};
|
|
use rustc_hir::def::Namespace;
|
|
use rustc_index::{Idx, IndexVec};
|
|
use rustc_target::abi::TyAndLayout;
|
|
|
|
use std::fmt;
|
|
use std::ops::ControlFlow;
|
|
use std::rc::Rc;
|
|
use std::sync::Arc;
|
|
|
|
impl fmt::Debug for ty::TraitDef {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
ty::tls::with(|tcx| {
|
|
with_no_trimmed_paths!({
|
|
f.write_str(
|
|
&FmtPrinter::new(tcx, Namespace::TypeNS)
|
|
.print_def_path(self.def_id, &[])?
|
|
.into_buffer(),
|
|
)
|
|
})
|
|
})
|
|
}
|
|
}
|
|
|
|
impl<'tcx> fmt::Debug for ty::AdtDef<'tcx> {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
ty::tls::with(|tcx| {
|
|
with_no_trimmed_paths!({
|
|
f.write_str(
|
|
&FmtPrinter::new(tcx, Namespace::TypeNS)
|
|
.print_def_path(self.did(), &[])?
|
|
.into_buffer(),
|
|
)
|
|
})
|
|
})
|
|
}
|
|
}
|
|
|
|
impl fmt::Debug for ty::UpvarId {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
let name = ty::tls::with(|tcx| tcx.hir().name(self.var_path.hir_id));
|
|
write!(f, "UpvarId({:?};`{}`;{:?})", self.var_path.hir_id, name, self.closure_expr_id)
|
|
}
|
|
}
|
|
|
|
impl<'tcx> fmt::Debug for ty::ExistentialTraitRef<'tcx> {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
with_no_trimmed_paths!(fmt::Display::fmt(self, f))
|
|
}
|
|
}
|
|
|
|
impl<'tcx> fmt::Debug for ty::adjustment::Adjustment<'tcx> {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
write!(f, "{:?} -> {}", self.kind, self.target)
|
|
}
|
|
}
|
|
|
|
impl fmt::Debug for ty::BoundRegionKind {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
match *self {
|
|
ty::BrAnon(span) => write!(f, "BrAnon({span:?})"),
|
|
ty::BrNamed(did, name) => {
|
|
if did.is_crate_root() {
|
|
write!(f, "BrNamed({})", name)
|
|
} else {
|
|
write!(f, "BrNamed({:?}, {})", did, name)
|
|
}
|
|
}
|
|
ty::BrEnv => write!(f, "BrEnv"),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl fmt::Debug for ty::FreeRegion {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
write!(f, "ReFree({:?}, {:?})", self.scope, self.bound_region)
|
|
}
|
|
}
|
|
|
|
impl<'tcx> fmt::Debug for ty::FnSig<'tcx> {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
write!(f, "({:?}; c_variadic: {})->{:?}", self.inputs(), self.c_variadic, self.output())
|
|
}
|
|
}
|
|
|
|
impl<'tcx> fmt::Debug for ty::ConstVid<'tcx> {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
write!(f, "?{}c", self.index)
|
|
}
|
|
}
|
|
|
|
impl<'tcx> fmt::Debug for ty::TraitRef<'tcx> {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
with_no_trimmed_paths!(fmt::Display::fmt(self, f))
|
|
}
|
|
}
|
|
|
|
impl<'tcx> fmt::Debug for Ty<'tcx> {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
with_no_trimmed_paths!(fmt::Display::fmt(self, f))
|
|
}
|
|
}
|
|
|
|
impl fmt::Debug for ty::ParamTy {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
write!(f, "{}/#{}", self.name, self.index)
|
|
}
|
|
}
|
|
|
|
impl fmt::Debug for ty::ParamConst {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
write!(f, "{}/#{}", self.name, self.index)
|
|
}
|
|
}
|
|
|
|
impl<'tcx> fmt::Debug for ty::TraitPredicate<'tcx> {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
if let ty::BoundConstness::ConstIfConst = self.constness {
|
|
write!(f, "~const ")?;
|
|
}
|
|
write!(f, "TraitPredicate({:?}, polarity:{:?})", self.trait_ref, self.polarity)
|
|
}
|
|
}
|
|
|
|
impl<'tcx> fmt::Debug for ty::ProjectionPredicate<'tcx> {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
write!(f, "ProjectionPredicate({:?}, {:?})", self.projection_ty, self.term)
|
|
}
|
|
}
|
|
|
|
impl<'tcx> fmt::Debug for ty::Predicate<'tcx> {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
write!(f, "{:?}", self.kind())
|
|
}
|
|
}
|
|
|
|
impl<'tcx> fmt::Debug for ty::Clause<'tcx> {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
match *self {
|
|
ty::Clause::ConstArgHasType(ct, ty) => write!(f, "ConstArgHasType({ct:?}, {ty:?})"),
|
|
ty::Clause::Trait(ref a) => a.fmt(f),
|
|
ty::Clause::RegionOutlives(ref pair) => pair.fmt(f),
|
|
ty::Clause::TypeOutlives(ref pair) => pair.fmt(f),
|
|
ty::Clause::Projection(ref pair) => pair.fmt(f),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<'tcx> fmt::Debug for ty::PredicateKind<'tcx> {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
match *self {
|
|
ty::PredicateKind::Clause(ref a) => a.fmt(f),
|
|
ty::PredicateKind::Subtype(ref pair) => pair.fmt(f),
|
|
ty::PredicateKind::Coerce(ref pair) => pair.fmt(f),
|
|
ty::PredicateKind::WellFormed(data) => write!(f, "WellFormed({:?})", data),
|
|
ty::PredicateKind::ObjectSafe(trait_def_id) => {
|
|
write!(f, "ObjectSafe({:?})", trait_def_id)
|
|
}
|
|
ty::PredicateKind::ClosureKind(closure_def_id, closure_substs, kind) => {
|
|
write!(f, "ClosureKind({:?}, {:?}, {:?})", closure_def_id, closure_substs, kind)
|
|
}
|
|
ty::PredicateKind::ConstEvaluatable(ct) => {
|
|
write!(f, "ConstEvaluatable({ct:?})")
|
|
}
|
|
ty::PredicateKind::ConstEquate(c1, c2) => write!(f, "ConstEquate({:?}, {:?})", c1, c2),
|
|
ty::PredicateKind::TypeWellFormedFromEnv(ty) => {
|
|
write!(f, "TypeWellFormedFromEnv({:?})", ty)
|
|
}
|
|
ty::PredicateKind::Ambiguous => write!(f, "Ambiguous"),
|
|
ty::PredicateKind::AliasRelate(t1, t2, dir) => {
|
|
write!(f, "AliasRelate({t1:?}, {dir:?}, {t2:?})")
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<'tcx> fmt::Debug for AliasTy<'tcx> {
|
|
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
|
f.debug_struct("AliasTy")
|
|
.field("substs", &self.substs)
|
|
.field("def_id", &self.def_id)
|
|
.finish()
|
|
}
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// Atomic structs
|
|
//
|
|
// For things that don't carry any arena-allocated data (and are
|
|
// copy...), just add them to one of these lists as appropriate.
|
|
|
|
// For things for which the type library provides traversal implementations
|
|
// for all Interners, we only need to provide a Lift implementation:
|
|
CloneLiftImpls! {
|
|
(),
|
|
bool,
|
|
usize,
|
|
u16,
|
|
u32,
|
|
u64,
|
|
String,
|
|
rustc_type_ir::DebruijnIndex,
|
|
}
|
|
|
|
// For things about which the type library does not know, or does not
|
|
// provide any traversal implementations, we need to provide both a Lift
|
|
// implementation and traversal implementations (the latter only for
|
|
// TyCtxt<'_> interners).
|
|
TrivialTypeTraversalAndLiftImpls! {
|
|
::rustc_target::abi::FieldIdx,
|
|
::rustc_target::abi::VariantIdx,
|
|
crate::middle::region::Scope,
|
|
crate::ty::FloatTy,
|
|
::rustc_ast::InlineAsmOptions,
|
|
::rustc_ast::InlineAsmTemplatePiece,
|
|
::rustc_ast::NodeId,
|
|
::rustc_span::symbol::Symbol,
|
|
::rustc_hir::def::Res,
|
|
::rustc_hir::def_id::DefId,
|
|
::rustc_hir::def_id::LocalDefId,
|
|
::rustc_hir::HirId,
|
|
::rustc_hir::MatchSource,
|
|
::rustc_hir::Mutability,
|
|
::rustc_hir::Unsafety,
|
|
::rustc_target::asm::InlineAsmRegOrRegClass,
|
|
::rustc_target::spec::abi::Abi,
|
|
crate::mir::coverage::ExpressionOperandId,
|
|
crate::mir::coverage::CounterValueReference,
|
|
crate::mir::coverage::InjectedExpressionId,
|
|
crate::mir::coverage::InjectedExpressionIndex,
|
|
crate::mir::coverage::MappedExpressionIndex,
|
|
crate::mir::Local,
|
|
crate::mir::Promoted,
|
|
crate::traits::Reveal,
|
|
crate::ty::adjustment::AutoBorrowMutability,
|
|
crate::ty::AdtKind,
|
|
crate::ty::BoundConstness,
|
|
// Including `BoundRegionKind` is a *bit* dubious, but direct
|
|
// references to bound region appear in `ty::Error`, and aren't
|
|
// really meant to be folded. In general, we can only fold a fully
|
|
// general `Region`.
|
|
crate::ty::BoundRegionKind,
|
|
crate::ty::AssocItem,
|
|
crate::ty::AssocKind,
|
|
crate::ty::AliasKind,
|
|
crate::ty::AliasRelationDirection,
|
|
crate::ty::Placeholder<crate::ty::BoundRegion>,
|
|
crate::ty::Placeholder<crate::ty::BoundTy>,
|
|
crate::ty::ClosureKind,
|
|
crate::ty::FreeRegion,
|
|
crate::ty::InferTy,
|
|
crate::ty::IntVarValue,
|
|
crate::ty::ParamConst,
|
|
crate::ty::ParamTy,
|
|
crate::ty::adjustment::PointerCast,
|
|
crate::ty::RegionVid,
|
|
crate::ty::UniverseIndex,
|
|
crate::ty::Variance,
|
|
::rustc_span::Span,
|
|
::rustc_span::symbol::Ident,
|
|
::rustc_errors::ErrorGuaranteed,
|
|
interpret::Scalar,
|
|
rustc_target::abi::Size,
|
|
ty::BoundVar,
|
|
ty::Placeholder<ty::BoundVar>,
|
|
}
|
|
|
|
TrivialTypeTraversalAndLiftImpls! {
|
|
ty::ValTree<'tcx>,
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// Lift implementations
|
|
|
|
impl<'tcx, A: Lift<'tcx>, B: Lift<'tcx>> Lift<'tcx> for (A, B) {
|
|
type Lifted = (A::Lifted, B::Lifted);
|
|
fn lift_to_tcx(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
|
|
Some((tcx.lift(self.0)?, tcx.lift(self.1)?))
|
|
}
|
|
}
|
|
|
|
impl<'tcx, A: Lift<'tcx>, B: Lift<'tcx>, C: Lift<'tcx>> Lift<'tcx> for (A, B, C) {
|
|
type Lifted = (A::Lifted, B::Lifted, C::Lifted);
|
|
fn lift_to_tcx(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
|
|
Some((tcx.lift(self.0)?, tcx.lift(self.1)?, tcx.lift(self.2)?))
|
|
}
|
|
}
|
|
|
|
impl<'tcx, T: Lift<'tcx>> Lift<'tcx> for Option<T> {
|
|
type Lifted = Option<T::Lifted>;
|
|
fn lift_to_tcx(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
|
|
Some(match self {
|
|
Some(x) => Some(tcx.lift(x)?),
|
|
None => None,
|
|
})
|
|
}
|
|
}
|
|
|
|
impl<'tcx, T: Lift<'tcx>, E: Lift<'tcx>> Lift<'tcx> for Result<T, E> {
|
|
type Lifted = Result<T::Lifted, E::Lifted>;
|
|
fn lift_to_tcx(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
|
|
match self {
|
|
Ok(x) => tcx.lift(x).map(Ok),
|
|
Err(e) => tcx.lift(e).map(Err),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<'tcx, T: Lift<'tcx>> Lift<'tcx> for Box<T> {
|
|
type Lifted = Box<T::Lifted>;
|
|
fn lift_to_tcx(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
|
|
Some(Box::new(tcx.lift(*self)?))
|
|
}
|
|
}
|
|
|
|
impl<'tcx, T: Lift<'tcx> + Clone> Lift<'tcx> for Rc<T> {
|
|
type Lifted = Rc<T::Lifted>;
|
|
fn lift_to_tcx(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
|
|
Some(Rc::new(tcx.lift(self.as_ref().clone())?))
|
|
}
|
|
}
|
|
|
|
impl<'tcx, T: Lift<'tcx> + Clone> Lift<'tcx> for Arc<T> {
|
|
type Lifted = Arc<T::Lifted>;
|
|
fn lift_to_tcx(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
|
|
Some(Arc::new(tcx.lift(self.as_ref().clone())?))
|
|
}
|
|
}
|
|
impl<'tcx, T: Lift<'tcx>> Lift<'tcx> for Vec<T> {
|
|
type Lifted = Vec<T::Lifted>;
|
|
fn lift_to_tcx(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
|
|
self.into_iter().map(|v| tcx.lift(v)).collect()
|
|
}
|
|
}
|
|
|
|
impl<'tcx, I: Idx, T: Lift<'tcx>> Lift<'tcx> for IndexVec<I, T> {
|
|
type Lifted = IndexVec<I, T::Lifted>;
|
|
fn lift_to_tcx(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
|
|
self.into_iter().map(|e| tcx.lift(e)).collect()
|
|
}
|
|
}
|
|
|
|
impl<'a, 'tcx> Lift<'tcx> for Term<'a> {
|
|
type Lifted = ty::Term<'tcx>;
|
|
fn lift_to_tcx(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
|
|
Some(
|
|
match self.unpack() {
|
|
TermKind::Ty(ty) => TermKind::Ty(tcx.lift(ty)?),
|
|
TermKind::Const(c) => TermKind::Const(tcx.lift(c)?),
|
|
}
|
|
.pack(),
|
|
)
|
|
}
|
|
}
|
|
impl<'a, 'tcx> Lift<'tcx> for ty::ParamEnv<'a> {
|
|
type Lifted = ty::ParamEnv<'tcx>;
|
|
fn lift_to_tcx(self, tcx: TyCtxt<'tcx>) -> Option<Self::Lifted> {
|
|
tcx.lift(self.caller_bounds())
|
|
.map(|caller_bounds| ty::ParamEnv::new(caller_bounds, self.reveal(), self.constness()))
|
|
}
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// Traversal implementations.
|
|
|
|
/// AdtDefs are basically the same as a DefId.
|
|
impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for ty::AdtDef<'tcx> {
|
|
fn try_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>(
|
|
self,
|
|
_folder: &mut F,
|
|
) -> Result<Self, F::Error> {
|
|
Ok(self)
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for ty::AdtDef<'tcx> {
|
|
fn visit_with<V: TypeVisitor<TyCtxt<'tcx>>>(
|
|
&self,
|
|
_visitor: &mut V,
|
|
) -> ControlFlow<V::BreakTy> {
|
|
ControlFlow::Continue(())
|
|
}
|
|
}
|
|
|
|
impl<'tcx, T: TypeFoldable<TyCtxt<'tcx>>> TypeFoldable<TyCtxt<'tcx>> for ty::Binder<'tcx, T> {
|
|
fn try_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>(
|
|
self,
|
|
folder: &mut F,
|
|
) -> Result<Self, F::Error> {
|
|
folder.try_fold_binder(self)
|
|
}
|
|
}
|
|
|
|
impl<'tcx, T: TypeVisitable<TyCtxt<'tcx>>> TypeVisitable<TyCtxt<'tcx>> for ty::Binder<'tcx, T> {
|
|
fn visit_with<V: TypeVisitor<TyCtxt<'tcx>>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
|
|
visitor.visit_binder(self)
|
|
}
|
|
}
|
|
|
|
impl<'tcx, T: TypeFoldable<TyCtxt<'tcx>>> TypeSuperFoldable<TyCtxt<'tcx>> for ty::Binder<'tcx, T> {
|
|
fn try_super_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>(
|
|
self,
|
|
folder: &mut F,
|
|
) -> Result<Self, F::Error> {
|
|
self.try_map_bound(|ty| ty.try_fold_with(folder))
|
|
}
|
|
}
|
|
|
|
impl<'tcx, T: TypeVisitable<TyCtxt<'tcx>>> TypeSuperVisitable<TyCtxt<'tcx>>
|
|
for ty::Binder<'tcx, T>
|
|
{
|
|
fn super_visit_with<V: TypeVisitor<TyCtxt<'tcx>>>(
|
|
&self,
|
|
visitor: &mut V,
|
|
) -> ControlFlow<V::BreakTy> {
|
|
self.as_ref().skip_binder().visit_with(visitor)
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for &'tcx ty::List<ty::PolyExistentialPredicate<'tcx>> {
|
|
fn try_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>(
|
|
self,
|
|
folder: &mut F,
|
|
) -> Result<Self, F::Error> {
|
|
ty::util::fold_list(self, folder, |tcx, v| tcx.mk_poly_existential_predicates(v))
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for &'tcx ty::List<ty::Const<'tcx>> {
|
|
fn try_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>(
|
|
self,
|
|
folder: &mut F,
|
|
) -> Result<Self, F::Error> {
|
|
ty::util::fold_list(self, folder, |tcx, v| tcx.mk_const_list(v))
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for &'tcx ty::List<ProjectionKind> {
|
|
fn try_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>(
|
|
self,
|
|
folder: &mut F,
|
|
) -> Result<Self, F::Error> {
|
|
ty::util::fold_list(self, folder, |tcx, v| tcx.mk_projs(v))
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for Ty<'tcx> {
|
|
fn try_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>(
|
|
self,
|
|
folder: &mut F,
|
|
) -> Result<Self, F::Error> {
|
|
folder.try_fold_ty(self)
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for Ty<'tcx> {
|
|
fn visit_with<V: TypeVisitor<TyCtxt<'tcx>>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
|
|
visitor.visit_ty(*self)
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeSuperFoldable<TyCtxt<'tcx>> for Ty<'tcx> {
|
|
fn try_super_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>(
|
|
self,
|
|
folder: &mut F,
|
|
) -> Result<Self, F::Error> {
|
|
let kind = match *self.kind() {
|
|
ty::RawPtr(tm) => ty::RawPtr(tm.try_fold_with(folder)?),
|
|
ty::Array(typ, sz) => ty::Array(typ.try_fold_with(folder)?, sz.try_fold_with(folder)?),
|
|
ty::Slice(typ) => ty::Slice(typ.try_fold_with(folder)?),
|
|
ty::Adt(tid, substs) => ty::Adt(tid, substs.try_fold_with(folder)?),
|
|
ty::Dynamic(trait_ty, region, representation) => ty::Dynamic(
|
|
trait_ty.try_fold_with(folder)?,
|
|
region.try_fold_with(folder)?,
|
|
representation,
|
|
),
|
|
ty::Tuple(ts) => ty::Tuple(ts.try_fold_with(folder)?),
|
|
ty::FnDef(def_id, substs) => ty::FnDef(def_id, substs.try_fold_with(folder)?),
|
|
ty::FnPtr(f) => ty::FnPtr(f.try_fold_with(folder)?),
|
|
ty::Ref(r, ty, mutbl) => {
|
|
ty::Ref(r.try_fold_with(folder)?, ty.try_fold_with(folder)?, mutbl)
|
|
}
|
|
ty::Generator(did, substs, movability) => {
|
|
ty::Generator(did, substs.try_fold_with(folder)?, movability)
|
|
}
|
|
ty::GeneratorWitness(types) => ty::GeneratorWitness(types.try_fold_with(folder)?),
|
|
ty::GeneratorWitnessMIR(did, substs) => {
|
|
ty::GeneratorWitnessMIR(did, substs.try_fold_with(folder)?)
|
|
}
|
|
ty::Closure(did, substs) => ty::Closure(did, substs.try_fold_with(folder)?),
|
|
ty::Alias(kind, data) => ty::Alias(kind, data.try_fold_with(folder)?),
|
|
|
|
ty::Bool
|
|
| ty::Char
|
|
| ty::Str
|
|
| ty::Int(_)
|
|
| ty::Uint(_)
|
|
| ty::Float(_)
|
|
| ty::Error(_)
|
|
| ty::Infer(_)
|
|
| ty::Param(..)
|
|
| ty::Bound(..)
|
|
| ty::Placeholder(..)
|
|
| ty::Never
|
|
| ty::Foreign(..) => return Ok(self),
|
|
};
|
|
|
|
Ok(if *self.kind() == kind { self } else { folder.interner().mk_ty_from_kind(kind) })
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeSuperVisitable<TyCtxt<'tcx>> for Ty<'tcx> {
|
|
fn super_visit_with<V: TypeVisitor<TyCtxt<'tcx>>>(
|
|
&self,
|
|
visitor: &mut V,
|
|
) -> ControlFlow<V::BreakTy> {
|
|
match self.kind() {
|
|
ty::RawPtr(ref tm) => tm.visit_with(visitor),
|
|
ty::Array(typ, sz) => {
|
|
typ.visit_with(visitor)?;
|
|
sz.visit_with(visitor)
|
|
}
|
|
ty::Slice(typ) => typ.visit_with(visitor),
|
|
ty::Adt(_, substs) => substs.visit_with(visitor),
|
|
ty::Dynamic(ref trait_ty, ref reg, _) => {
|
|
trait_ty.visit_with(visitor)?;
|
|
reg.visit_with(visitor)
|
|
}
|
|
ty::Tuple(ts) => ts.visit_with(visitor),
|
|
ty::FnDef(_, substs) => substs.visit_with(visitor),
|
|
ty::FnPtr(ref f) => f.visit_with(visitor),
|
|
ty::Ref(r, ty, _) => {
|
|
r.visit_with(visitor)?;
|
|
ty.visit_with(visitor)
|
|
}
|
|
ty::Generator(_did, ref substs, _) => substs.visit_with(visitor),
|
|
ty::GeneratorWitness(ref types) => types.visit_with(visitor),
|
|
ty::GeneratorWitnessMIR(_did, ref substs) => substs.visit_with(visitor),
|
|
ty::Closure(_did, ref substs) => substs.visit_with(visitor),
|
|
ty::Alias(_, ref data) => data.visit_with(visitor),
|
|
|
|
ty::Bool
|
|
| ty::Char
|
|
| ty::Str
|
|
| ty::Int(_)
|
|
| ty::Uint(_)
|
|
| ty::Float(_)
|
|
| ty::Error(_)
|
|
| ty::Infer(_)
|
|
| ty::Bound(..)
|
|
| ty::Placeholder(..)
|
|
| ty::Param(..)
|
|
| ty::Never
|
|
| ty::Foreign(..) => ControlFlow::Continue(()),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for ty::Region<'tcx> {
|
|
fn try_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>(
|
|
self,
|
|
folder: &mut F,
|
|
) -> Result<Self, F::Error> {
|
|
folder.try_fold_region(self)
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for ty::Region<'tcx> {
|
|
fn visit_with<V: TypeVisitor<TyCtxt<'tcx>>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
|
|
visitor.visit_region(*self)
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for ty::Predicate<'tcx> {
|
|
fn try_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>(
|
|
self,
|
|
folder: &mut F,
|
|
) -> Result<Self, F::Error> {
|
|
folder.try_fold_predicate(self)
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for ty::Predicate<'tcx> {
|
|
fn visit_with<V: TypeVisitor<TyCtxt<'tcx>>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
|
|
visitor.visit_predicate(*self)
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeSuperFoldable<TyCtxt<'tcx>> for ty::Predicate<'tcx> {
|
|
fn try_super_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>(
|
|
self,
|
|
folder: &mut F,
|
|
) -> Result<Self, F::Error> {
|
|
let new = self.kind().try_fold_with(folder)?;
|
|
Ok(folder.interner().reuse_or_mk_predicate(self, new))
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeSuperVisitable<TyCtxt<'tcx>> for ty::Predicate<'tcx> {
|
|
fn super_visit_with<V: TypeVisitor<TyCtxt<'tcx>>>(
|
|
&self,
|
|
visitor: &mut V,
|
|
) -> ControlFlow<V::BreakTy> {
|
|
self.kind().visit_with(visitor)
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for &'tcx ty::List<ty::Predicate<'tcx>> {
|
|
fn try_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>(
|
|
self,
|
|
folder: &mut F,
|
|
) -> Result<Self, F::Error> {
|
|
ty::util::fold_list(self, folder, |tcx, v| tcx.mk_predicates(v))
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for ty::Const<'tcx> {
|
|
fn try_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>(
|
|
self,
|
|
folder: &mut F,
|
|
) -> Result<Self, F::Error> {
|
|
folder.try_fold_const(self)
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for ty::Const<'tcx> {
|
|
fn visit_with<V: TypeVisitor<TyCtxt<'tcx>>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
|
|
visitor.visit_const(*self)
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeSuperFoldable<TyCtxt<'tcx>> for ty::Const<'tcx> {
|
|
fn try_super_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>(
|
|
self,
|
|
folder: &mut F,
|
|
) -> Result<Self, F::Error> {
|
|
let ty = self.ty().try_fold_with(folder)?;
|
|
let kind = self.kind().try_fold_with(folder)?;
|
|
if ty != self.ty() || kind != self.kind() {
|
|
Ok(folder.interner().mk_const(kind, ty))
|
|
} else {
|
|
Ok(self)
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeSuperVisitable<TyCtxt<'tcx>> for ty::Const<'tcx> {
|
|
fn super_visit_with<V: TypeVisitor<TyCtxt<'tcx>>>(
|
|
&self,
|
|
visitor: &mut V,
|
|
) -> ControlFlow<V::BreakTy> {
|
|
self.ty().visit_with(visitor)?;
|
|
self.kind().visit_with(visitor)
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for InferConst<'tcx> {
|
|
fn try_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>(
|
|
self,
|
|
_folder: &mut F,
|
|
) -> Result<Self, F::Error> {
|
|
Ok(self)
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for InferConst<'tcx> {
|
|
fn visit_with<V: TypeVisitor<TyCtxt<'tcx>>>(
|
|
&self,
|
|
_visitor: &mut V,
|
|
) -> ControlFlow<V::BreakTy> {
|
|
ControlFlow::Continue(())
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeSuperVisitable<TyCtxt<'tcx>> for ty::UnevaluatedConst<'tcx> {
|
|
fn super_visit_with<V: TypeVisitor<TyCtxt<'tcx>>>(
|
|
&self,
|
|
visitor: &mut V,
|
|
) -> ControlFlow<V::BreakTy> {
|
|
self.substs.visit_with(visitor)
|
|
}
|
|
}
|
|
|
|
impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for TyAndLayout<'tcx, Ty<'tcx>> {
|
|
fn visit_with<V: TypeVisitor<TyCtxt<'tcx>>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
|
|
visitor.visit_ty(self.ty)
|
|
}
|
|
}
|