diff options
Diffstat (limited to 'compiler/rustc_middle/src/ty/print/pretty.rs')
| -rw-r--r-- | compiler/rustc_middle/src/ty/print/pretty.rs | 118 |
1 files changed, 73 insertions, 45 deletions
diff --git a/compiler/rustc_middle/src/ty/print/pretty.rs b/compiler/rustc_middle/src/ty/print/pretty.rs index 7f2e81a71..97bddb93e 100644 --- a/compiler/rustc_middle/src/ty/print/pretty.rs +++ b/compiler/rustc_middle/src/ty/print/pretty.rs @@ -1,7 +1,7 @@ use crate::mir::interpret::{AllocRange, GlobalAlloc, Pointer, Provenance, Scalar}; use crate::ty::subst::{GenericArg, GenericArgKind, Subst}; use crate::ty::{ - self, ConstInt, DefIdTree, ParamConst, ScalarInt, Term, Ty, TyCtxt, TypeFoldable, + self, ConstInt, DefIdTree, ParamConst, ScalarInt, Term, TermKind, Ty, TyCtxt, TypeFoldable, TypeSuperFoldable, TypeSuperVisitable, TypeVisitable, }; use rustc_apfloat::ieee::{Double, Single}; @@ -619,12 +619,16 @@ pub trait PrettyPrinter<'tcx>: ty::Adt(def, substs) => { p!(print_def_path(def.did(), substs)); } - ty::Dynamic(data, r) => { + ty::Dynamic(data, r, repr) => { let print_r = self.should_print_region(r); if print_r { p!("("); } - p!("dyn ", print(data)); + match repr { + ty::Dyn => p!("dyn "), + ty::DynStar => p!("dyn* "), + } + p!(print(data)); if print_r { p!(" + ", print(r), ")"); } @@ -632,7 +636,13 @@ pub trait PrettyPrinter<'tcx>: ty::Foreign(def_id) => { p!(print_def_path(def_id, &[])); } - ty::Projection(ref data) => p!(print(data)), + ty::Projection(ref data) => { + if self.tcx().def_kind(data.item_def_id) == DefKind::ImplTraitPlaceholder { + return self.pretty_print_opaque_impl_type(data.item_def_id, data.substs); + } else { + p!(print(data)) + } + } ty::Placeholder(placeholder) => p!(write("Placeholder({:?})", placeholder)), ty::Opaque(def_id, substs) => { // FIXME(eddyb) print this with `print_def_path`. @@ -855,7 +865,7 @@ pub trait PrettyPrinter<'tcx>: } p!(")"); - if let Term::Ty(ty) = return_ty.skip_binder() { + if let Some(ty) = return_ty.skip_binder().ty() { if !ty.is_unit() { p!(" -> ", print(return_ty)); } @@ -916,12 +926,14 @@ pub trait PrettyPrinter<'tcx>: // Skip printing `<[generator@] as Generator<_>>::Return` from async blocks, // unless we can find out what generator return type it comes from. let term = if let Some(ty) = term.skip_binder().ty() - && let ty::Projection(ty::ProjectionTy { item_def_id, substs }) = ty.kind() - && Some(*item_def_id) == tcx.lang_items().generator_return() + && let ty::Projection(proj) = ty.kind() + && let assoc = tcx.associated_item(proj.item_def_id) + && assoc.trait_container(tcx) == tcx.lang_items().gen_trait() + && assoc.name == rustc_span::sym::Return { if let ty::Generator(_, substs, _) = substs.type_at(0).kind() { let return_ty = substs.as_generator().return_ty(); - if !return_ty.is_ty_infer() { + if !return_ty.is_ty_var() { return_ty.into() } else { continue; @@ -942,13 +954,9 @@ pub trait PrettyPrinter<'tcx>: p!(write("{} = ", tcx.associated_item(assoc_item_def_id).name)); - match term { - Term::Ty(ty) => { - p!(print(ty)) - } - Term::Const(c) => { - p!(print(c)); - } + match term.unpack() { + TermKind::Ty(ty) => p!(print(ty)), + TermKind::Const(c) => p!(print(c)), }; } @@ -1193,15 +1201,9 @@ pub trait PrettyPrinter<'tcx>: } match ct.kind() { - ty::ConstKind::Unevaluated(ty::Unevaluated { - def, - substs, - promoted: Some(promoted), - }) => { - p!(print_value_path(def.did, substs)); - p!(write("::{:?}", promoted)); - } - ty::ConstKind::Unevaluated(ty::Unevaluated { def, substs, promoted: None }) => { + ty::ConstKind::Unevaluated(ty::Unevaluated { def, substs, promoted }) => { + assert_eq!(promoted, ()); + match self.tcx().def_kind(def.did) { DefKind::Static(..) | DefKind::Const | DefKind::AssocConst => { p!(print_value_path(def.did, substs)) @@ -1275,7 +1277,7 @@ pub trait PrettyPrinter<'tcx>: let range = AllocRange { start: offset, size: Size::from_bytes(len) }; if let Ok(byte_str) = - alloc.inner().get_bytes(&self.tcx(), range) + alloc.inner().get_bytes_strip_provenance(&self.tcx(), range) { p!(pretty_print_byte_str(byte_str)) } else { @@ -1401,14 +1403,7 @@ pub trait PrettyPrinter<'tcx>: } fn pretty_print_byte_str(mut self, byte_str: &'tcx [u8]) -> Result<Self::Const, Self::Error> { - define_scoped_cx!(self); - p!("b\""); - for &c in byte_str { - for e in std::ascii::escape_default(c) { - self.write_char(e as char)?; - } - } - p!("\""); + write!(self, "b\"{}\"", byte_str.escape_ascii())?; Ok(self) } @@ -1513,6 +1508,10 @@ pub trait PrettyPrinter<'tcx>: } return Ok(self); } + (ty::ValTree::Leaf(leaf), ty::Ref(_, inner_ty, _)) => { + p!(write("&")); + return self.pretty_print_const_scalar_int(leaf, *inner_ty, print_ty); + } (ty::ValTree::Leaf(leaf), _) => { return self.pretty_print_const_scalar_int(leaf, ty, print_ty); } @@ -1532,6 +1531,34 @@ pub trait PrettyPrinter<'tcx>: } Ok(self) } + + fn pretty_closure_as_impl( + mut self, + closure: ty::ClosureSubsts<'tcx>, + ) -> Result<Self::Const, Self::Error> { + let sig = closure.sig(); + let kind = closure.kind_ty().to_opt_closure_kind().unwrap_or(ty::ClosureKind::Fn); + + write!(self, "impl ")?; + self.wrap_binder(&sig, |sig, mut cx| { + define_scoped_cx!(cx); + + p!(print(kind), "("); + for (i, arg) in sig.inputs()[0].tuple_fields().iter().enumerate() { + if i > 0 { + p!(", "); + } + p!(print(arg)); + } + p!(")"); + + if !sig.output().is_unit() { + p!(" -> ", print(sig.output())); + } + + Ok(cx) + }) + } } // HACK(eddyb) boxed to avoid moving around a large struct by-value. @@ -1950,7 +1977,7 @@ impl<'tcx> PrettyPrinter<'tcx> for FmtPrinter<'_, 'tcx> { ty::ReVar(_) | ty::ReErased => false, - ty::ReStatic | ty::ReEmpty(_) => true, + ty::ReStatic => true, } } @@ -2034,14 +2061,6 @@ impl<'tcx> FmtPrinter<'_, 'tcx> { p!("'static"); return Ok(self); } - ty::ReEmpty(ty::UniverseIndex::ROOT) => { - p!("'<empty>"); - return Ok(self); - } - ty::ReEmpty(ui) => { - p!(write("'<empty:{:?}>", ui)); - return Ok(self); - } } p!("'_"); @@ -2446,6 +2465,11 @@ impl<'tcx> ty::PolyTraitPredicate<'tcx> { } } +#[derive(Debug, Copy, Clone, TypeFoldable, TypeVisitable, Lift)] +pub struct PrintClosureAsImpl<'tcx> { + pub closure: ty::ClosureSubsts<'tcx>, +} + forward_display_to_print! { ty::Region<'tcx>, Ty<'tcx>, @@ -2538,6 +2562,10 @@ define_print_and_forward_display! { p!(print(self.0.trait_ref.print_only_trait_path())); } + PrintClosureAsImpl<'tcx> { + p!(pretty_closure_as_impl(self.closure)) + } + ty::ParamTy { p!(write("{}", self.name)) } @@ -2567,9 +2595,9 @@ define_print_and_forward_display! { } ty::Term<'tcx> { - match self { - ty::Term::Ty(ty) => p!(print(ty)), - ty::Term::Const(c) => p!(print(c)), + match self.unpack() { + ty::TermKind::Ty(ty) => p!(print(ty)), + ty::TermKind::Const(c) => p!(print(c)), } } |