Track ParamEnv
s properly
This uses the same `with_param_env` pattern that late lints use. Thanks to all the doctree refactors, this was very easy to add.
This commit is contained in:
parent
a192e5d9c2
commit
6278daac54
3 changed files with 186 additions and 155 deletions
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@ -1067,63 +1067,68 @@ impl Clean<TypeKind> for hir::def::DefKind {
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impl Clean<Item> for hir::TraitItem<'_> {
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fn clean(&self, cx: &DocContext<'_>) -> Item {
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let local_did = cx.tcx.hir().local_def_id(self.hir_id).to_def_id();
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let inner = match self.kind {
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hir::TraitItemKind::Const(ref ty, default) => {
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AssocConstItem(ty.clean(cx), default.map(|e| print_const_expr(cx, e)))
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}
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hir::TraitItemKind::Fn(ref sig, hir::TraitFn::Provided(body)) => {
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let mut m = (sig, &self.generics, body).clean(cx);
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if m.header.constness == hir::Constness::Const
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&& is_unstable_const_fn(cx.tcx, local_did).is_some()
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{
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m.header.constness = hir::Constness::NotConst;
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cx.with_param_env(local_did, || {
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let inner = match self.kind {
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hir::TraitItemKind::Const(ref ty, default) => {
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AssocConstItem(ty.clean(cx), default.map(|e| print_const_expr(cx, e)))
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}
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MethodItem(m, None)
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}
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hir::TraitItemKind::Fn(ref sig, hir::TraitFn::Required(ref names)) => {
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let (generics, decl) = enter_impl_trait(cx, || {
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(self.generics.clean(cx), (&*sig.decl, &names[..]).clean(cx))
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});
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let (all_types, ret_types) = get_all_types(&generics, &decl, cx);
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let mut t = Function { header: sig.header, decl, generics, all_types, ret_types };
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if t.header.constness == hir::Constness::Const
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&& is_unstable_const_fn(cx.tcx, local_did).is_some()
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{
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t.header.constness = hir::Constness::NotConst;
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hir::TraitItemKind::Fn(ref sig, hir::TraitFn::Provided(body)) => {
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let mut m = (sig, &self.generics, body).clean(cx);
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if m.header.constness == hir::Constness::Const
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&& is_unstable_const_fn(cx.tcx, local_did).is_some()
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{
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m.header.constness = hir::Constness::NotConst;
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}
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MethodItem(m, None)
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}
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TyMethodItem(t)
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}
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hir::TraitItemKind::Type(ref bounds, ref default) => {
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AssocTypeItem(bounds.clean(cx), default.clean(cx))
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}
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};
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Item::from_def_id_and_parts(local_did, Some(self.ident.name), inner, cx)
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hir::TraitItemKind::Fn(ref sig, hir::TraitFn::Required(ref names)) => {
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let (generics, decl) = enter_impl_trait(cx, || {
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(self.generics.clean(cx), (&*sig.decl, &names[..]).clean(cx))
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});
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let (all_types, ret_types) = get_all_types(&generics, &decl, cx);
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let mut t =
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Function { header: sig.header, decl, generics, all_types, ret_types };
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if t.header.constness == hir::Constness::Const
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&& is_unstable_const_fn(cx.tcx, local_did).is_some()
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{
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t.header.constness = hir::Constness::NotConst;
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}
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TyMethodItem(t)
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}
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hir::TraitItemKind::Type(ref bounds, ref default) => {
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AssocTypeItem(bounds.clean(cx), default.clean(cx))
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}
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};
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Item::from_def_id_and_parts(local_did, Some(self.ident.name), inner, cx)
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})
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}
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}
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impl Clean<Item> for hir::ImplItem<'_> {
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fn clean(&self, cx: &DocContext<'_>) -> Item {
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let local_did = cx.tcx.hir().local_def_id(self.hir_id).to_def_id();
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let inner = match self.kind {
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hir::ImplItemKind::Const(ref ty, expr) => {
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AssocConstItem(ty.clean(cx), Some(print_const_expr(cx, expr)))
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}
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hir::ImplItemKind::Fn(ref sig, body) => {
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let mut m = (sig, &self.generics, body).clean(cx);
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if m.header.constness == hir::Constness::Const
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&& is_unstable_const_fn(cx.tcx, local_did).is_some()
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{
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m.header.constness = hir::Constness::NotConst;
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cx.with_param_env(local_did, || {
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let inner = match self.kind {
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hir::ImplItemKind::Const(ref ty, expr) => {
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AssocConstItem(ty.clean(cx), Some(print_const_expr(cx, expr)))
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}
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MethodItem(m, Some(self.defaultness))
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}
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hir::ImplItemKind::TyAlias(ref ty) => {
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let type_ = ty.clean(cx);
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let item_type = type_.def_id().and_then(|did| inline::build_ty(cx, did));
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TypedefItem(Typedef { type_, generics: Generics::default(), item_type }, true)
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}
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};
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Item::from_def_id_and_parts(local_did, Some(self.ident.name), inner, cx)
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hir::ImplItemKind::Fn(ref sig, body) => {
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let mut m = (sig, &self.generics, body).clean(cx);
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if m.header.constness == hir::Constness::Const
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&& is_unstable_const_fn(cx.tcx, local_did).is_some()
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{
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m.header.constness = hir::Constness::NotConst;
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}
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MethodItem(m, Some(self.defaultness))
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}
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hir::ImplItemKind::TyAlias(ref ty) => {
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let type_ = ty.clean(cx);
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let item_type = type_.def_id().and_then(|did| inline::build_ty(cx, did));
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TypedefItem(Typedef { type_, generics: Generics::default(), item_type }, true)
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}
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};
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Item::from_def_id_and_parts(local_did, Some(self.ident.name), inner, cx)
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})
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}
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}
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@ -1396,7 +1401,7 @@ fn clean_qpath(hir_ty: &hir::Ty<'_>, cx: &DocContext<'_>) -> Type {
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hir::QPath::Resolved(Some(ref qself), ref p) => {
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// Try to normalize `<X as Y>::T` to a type
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let ty = hir_ty_to_ty(cx.tcx, hir_ty);
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if let Some(normalized_value) = normalize(cx.tcx, ty) {
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if let Some(normalized_value) = normalize(cx, ty) {
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return normalized_value.clean(cx);
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}
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@ -1498,21 +1503,16 @@ impl Clean<Type> for hir::Ty<'_> {
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}
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/// Returns `None` if the type could not be normalized
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fn normalize(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>) -> Option<Ty<'tcx>> {
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fn normalize(cx: &DocContext<'tcx>, ty: Ty<'tcx>) -> Option<Ty<'tcx>> {
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use crate::rustc_trait_selection::infer::TyCtxtInferExt;
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use crate::rustc_trait_selection::traits::query::normalize::AtExt;
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use rustc_middle::traits::ObligationCause;
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use rustc_middle::ty::ParamEnv;
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// Try to normalize `<X as Y>::T` to a type
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// FIXME: rustdoc won't be able to perform 'partial' normalization
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// until this param env is actually correct
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// 'partial': `<Vec<T> as IntoIterator>::IntoIter>` -> `vec::IntoIter<T>`
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let param_env = ParamEnv::empty();
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let lifted = ty.lift_to_tcx(tcx).unwrap();
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let normalized = tcx.infer_ctxt().enter(|infcx| {
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let lifted = ty.lift_to_tcx(cx.tcx).unwrap();
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let normalized = cx.tcx.infer_ctxt().enter(|infcx| {
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infcx
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.at(&ObligationCause::dummy(), param_env)
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.at(&ObligationCause::dummy(), cx.param_env.get())
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.normalize(lifted)
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.map(|resolved| infcx.resolve_vars_if_possible(resolved.value))
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});
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@ -1531,7 +1531,7 @@ fn normalize(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>) -> Option<Ty<'tcx>> {
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impl<'tcx> Clean<Type> for Ty<'tcx> {
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fn clean(&self, cx: &DocContext<'_>) -> Type {
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debug!("cleaning type: {:?}", self);
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let ty = normalize(cx.tcx, self.lift_to_tcx(cx.tcx).unwrap()).unwrap_or(self);
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let ty = normalize(cx, self.lift_to_tcx(cx.tcx).unwrap()).unwrap_or(self);
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match *ty.kind() {
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ty::Never => Never,
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ty::Bool => Primitive(PrimitiveType::Bool),
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@ -1984,77 +1984,81 @@ impl Clean<Vec<Item>> for (&hir::Item<'_>, Option<Ident>) {
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Some(ident) => ident.name,
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None => cx.tcx.hir().name(item.hir_id),
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};
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let kind = match item.kind {
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ItemKind::Static(ty, mutability, body_id) => StaticItem(Static {
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type_: ty.clean(cx),
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mutability,
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expr: print_const_expr(cx, body_id),
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}),
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ItemKind::Const(ty, body_id) => ConstantItem(Constant {
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type_: ty.clean(cx),
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expr: print_const_expr(cx, body_id),
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value: print_evaluated_const(cx, def_id),
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is_literal: is_literal_expr(cx, body_id.hir_id),
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}),
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ItemKind::OpaqueTy(ref ty) => OpaqueTyItem(OpaqueTy {
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bounds: ty.bounds.clean(cx),
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generics: ty.generics.clean(cx),
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}),
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ItemKind::TyAlias(ty, ref generics) => {
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let rustdoc_ty = ty.clean(cx);
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let item_type = rustdoc_ty.def_id().and_then(|did| inline::build_ty(cx, did));
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TypedefItem(
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Typedef { type_: rustdoc_ty, generics: generics.clean(cx), item_type },
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false,
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)
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}
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ItemKind::Enum(ref def, ref generics) => EnumItem(Enum {
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variants: def.variants.iter().map(|v| v.clean(cx)).collect(),
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generics: generics.clean(cx),
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variants_stripped: false,
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}),
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ItemKind::TraitAlias(ref generics, bounds) => TraitAliasItem(TraitAlias {
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generics: generics.clean(cx),
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bounds: bounds.clean(cx),
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}),
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ItemKind::Union(ref variant_data, ref generics) => UnionItem(Union {
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struct_type: doctree::struct_type_from_def(&variant_data),
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generics: generics.clean(cx),
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fields: variant_data.fields().clean(cx),
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fields_stripped: false,
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}),
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ItemKind::Struct(ref variant_data, ref generics) => StructItem(Struct {
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struct_type: doctree::struct_type_from_def(&variant_data),
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generics: generics.clean(cx),
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fields: variant_data.fields().clean(cx),
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fields_stripped: false,
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}),
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ItemKind::Impl { .. } => return clean_impl(item, cx),
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// proc macros can have a name set by attributes
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ItemKind::Fn(ref sig, ref generics, body_id) => {
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clean_fn_or_proc_macro(item, sig, generics, body_id, &mut name, cx)
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}
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hir::ItemKind::Trait(is_auto, unsafety, ref generics, ref bounds, ref item_ids) => {
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let items =
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item_ids.iter().map(|ti| cx.tcx.hir().trait_item(ti.id).clean(cx)).collect();
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let attrs = item.attrs.clean(cx);
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let is_spotlight = attrs.has_doc_flag(sym::spotlight);
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TraitItem(Trait {
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unsafety,
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items,
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cx.with_param_env(def_id, || {
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let kind = match item.kind {
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ItemKind::Static(ty, mutability, body_id) => StaticItem(Static {
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type_: ty.clean(cx),
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mutability,
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expr: print_const_expr(cx, body_id),
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}),
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ItemKind::Const(ty, body_id) => ConstantItem(Constant {
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type_: ty.clean(cx),
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expr: print_const_expr(cx, body_id),
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value: print_evaluated_const(cx, def_id),
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is_literal: is_literal_expr(cx, body_id.hir_id),
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}),
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ItemKind::OpaqueTy(ref ty) => OpaqueTyItem(OpaqueTy {
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bounds: ty.bounds.clean(cx),
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generics: ty.generics.clean(cx),
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}),
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ItemKind::TyAlias(ty, ref generics) => {
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let rustdoc_ty = ty.clean(cx);
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let item_type = rustdoc_ty.def_id().and_then(|did| inline::build_ty(cx, did));
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TypedefItem(
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Typedef { type_: rustdoc_ty, generics: generics.clean(cx), item_type },
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false,
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)
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}
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ItemKind::Enum(ref def, ref generics) => EnumItem(Enum {
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variants: def.variants.iter().map(|v| v.clean(cx)).collect(),
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generics: generics.clean(cx),
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variants_stripped: false,
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}),
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ItemKind::TraitAlias(ref generics, bounds) => TraitAliasItem(TraitAlias {
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generics: generics.clean(cx),
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bounds: bounds.clean(cx),
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is_spotlight,
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is_auto: is_auto.clean(cx),
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})
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}
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ItemKind::ExternCrate(orig_name) => {
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return clean_extern_crate(item, name, orig_name, cx);
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}
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_ => unreachable!("not yet converted"),
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};
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}),
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ItemKind::Union(ref variant_data, ref generics) => UnionItem(Union {
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struct_type: doctree::struct_type_from_def(&variant_data),
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generics: generics.clean(cx),
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fields: variant_data.fields().clean(cx),
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fields_stripped: false,
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}),
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ItemKind::Struct(ref variant_data, ref generics) => StructItem(Struct {
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struct_type: doctree::struct_type_from_def(&variant_data),
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generics: generics.clean(cx),
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fields: variant_data.fields().clean(cx),
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fields_stripped: false,
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}),
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ItemKind::Impl { .. } => return clean_impl(item, cx),
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// proc macros can have a name set by attributes
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ItemKind::Fn(ref sig, ref generics, body_id) => {
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clean_fn_or_proc_macro(item, sig, generics, body_id, &mut name, cx)
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}
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hir::ItemKind::Trait(is_auto, unsafety, ref generics, ref bounds, ref item_ids) => {
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let items = item_ids
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.iter()
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.map(|ti| cx.tcx.hir().trait_item(ti.id).clean(cx))
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.collect();
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let attrs = item.attrs.clean(cx);
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let is_spotlight = attrs.has_doc_flag(sym::spotlight);
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TraitItem(Trait {
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unsafety,
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items,
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generics: generics.clean(cx),
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bounds: bounds.clean(cx),
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is_spotlight,
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is_auto: is_auto.clean(cx),
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})
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}
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ItemKind::ExternCrate(orig_name) => {
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return clean_extern_crate(item, name, orig_name, cx);
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}
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_ => unreachable!("not yet converted"),
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};
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vec![Item::from_def_id_and_parts(def_id, Some(name), kind, cx)]
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vec![Item::from_def_id_and_parts(def_id, Some(name), kind, cx)]
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})
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}
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}
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@ -2272,32 +2276,42 @@ impl Clean<Vec<Item>> for doctree::Import<'_> {
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impl Clean<Item> for (&hir::ForeignItem<'_>, Option<Ident>) {
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fn clean(&self, cx: &DocContext<'_>) -> Item {
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let (item, renamed) = self;
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let kind = match item.kind {
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hir::ForeignItemKind::Fn(ref decl, ref names, ref generics) => {
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let abi = cx.tcx.hir().get_foreign_abi(item.hir_id);
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let (generics, decl) =
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enter_impl_trait(cx, || (generics.clean(cx), (&**decl, &names[..]).clean(cx)));
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let (all_types, ret_types) = get_all_types(&generics, &decl, cx);
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ForeignFunctionItem(Function {
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decl,
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generics,
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header: hir::FnHeader {
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unsafety: hir::Unsafety::Unsafe,
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abi,
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constness: hir::Constness::NotConst,
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asyncness: hir::IsAsync::NotAsync,
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},
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all_types,
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ret_types,
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})
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}
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hir::ForeignItemKind::Static(ref ty, mutability) => {
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ForeignStaticItem(Static { type_: ty.clean(cx), mutability, expr: String::new() })
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}
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hir::ForeignItemKind::Type => ForeignTypeItem,
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};
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cx.with_param_env(cx.tcx.hir().local_def_id(item.hir_id).to_def_id(), || {
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let kind = match item.kind {
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hir::ForeignItemKind::Fn(ref decl, ref names, ref generics) => {
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let abi = cx.tcx.hir().get_foreign_abi(item.hir_id);
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let (generics, decl) = enter_impl_trait(cx, || {
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(generics.clean(cx), (&**decl, &names[..]).clean(cx))
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});
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let (all_types, ret_types) = get_all_types(&generics, &decl, cx);
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ForeignFunctionItem(Function {
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decl,
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generics,
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header: hir::FnHeader {
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unsafety: hir::Unsafety::Unsafe,
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abi,
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constness: hir::Constness::NotConst,
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asyncness: hir::IsAsync::NotAsync,
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},
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all_types,
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ret_types,
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})
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}
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hir::ForeignItemKind::Static(ref ty, mutability) => ForeignStaticItem(Static {
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type_: ty.clean(cx),
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mutability,
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expr: String::new(),
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}),
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hir::ForeignItemKind::Type => ForeignTypeItem,
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};
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Item::from_hir_id_and_parts(item.hir_id, Some(renamed.unwrap_or(item.ident).name), kind, cx)
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Item::from_hir_id_and_parts(
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item.hir_id,
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Some(renamed.unwrap_or(item.ident).name),
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kind,
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cx,
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)
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})
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}
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}
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|
|
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@ -15,7 +15,7 @@ use rustc_interface::interface;
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use rustc_middle::hir::map::Map;
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use rustc_middle::middle::cstore::CrateStore;
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use rustc_middle::middle::privacy::AccessLevels;
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use rustc_middle::ty::{Ty, TyCtxt};
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use rustc_middle::ty::{ParamEnv, Ty, TyCtxt};
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use rustc_resolve as resolve;
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use rustc_session::config::{self, CrateType, ErrorOutputType};
|
||||
use rustc_session::lint;
|
||||
|
@ -25,7 +25,7 @@ use rustc_span::source_map;
|
|||
use rustc_span::symbol::sym;
|
||||
use rustc_span::DUMMY_SP;
|
||||
|
||||
use std::cell::RefCell;
|
||||
use std::cell::{Cell, RefCell};
|
||||
use std::mem;
|
||||
use std::rc::Rc;
|
||||
|
||||
|
@ -42,6 +42,10 @@ crate type ExternalPaths = FxHashMap<DefId, (Vec<String>, clean::TypeKind)>;
|
|||
crate struct DocContext<'tcx> {
|
||||
crate tcx: TyCtxt<'tcx>,
|
||||
crate resolver: Rc<RefCell<interface::BoxedResolver>>,
|
||||
/// Used for normalization.
|
||||
///
|
||||
/// Most of this logic is copied from rustc_lint::late.
|
||||
crate param_env: Cell<ParamEnv<'tcx>>,
|
||||
/// Later on moved into `CACHE_KEY`
|
||||
crate renderinfo: RefCell<RenderInfo>,
|
||||
/// Later on moved through `clean::Crate` into `CACHE_KEY`
|
||||
|
@ -79,6 +83,13 @@ impl<'tcx> DocContext<'tcx> {
|
|||
&self.tcx.sess
|
||||
}
|
||||
|
||||
crate fn with_param_env<T, F: FnOnce() -> T>(&self, def_id: DefId, f: F) -> T {
|
||||
let old_param_env = self.param_env.replace(self.tcx.param_env(def_id));
|
||||
let ret = f();
|
||||
self.param_env.set(old_param_env);
|
||||
ret
|
||||
}
|
||||
|
||||
crate fn enter_resolver<F, R>(&self, f: F) -> R
|
||||
where
|
||||
F: FnOnce(&mut resolve::Resolver<'_>) -> R,
|
||||
|
@ -524,6 +535,7 @@ fn run_global_ctxt(
|
|||
let mut ctxt = DocContext {
|
||||
tcx,
|
||||
resolver,
|
||||
param_env: Cell::new(ParamEnv::empty()),
|
||||
external_traits: Default::default(),
|
||||
active_extern_traits: Default::default(),
|
||||
renderinfo: RefCell::new(renderinfo),
|
||||
|
|
|
@ -16,7 +16,7 @@ pub fn f() -> <usize as Trait>::X {
|
|||
}
|
||||
|
||||
pub struct S {
|
||||
// @has 'normalize_assoc_item/struct.S.html' '//span[@id="structfield.box_me_up"]' 'box_me_up: Box<S>'
|
||||
// @has 'normalize_assoc_item/struct.S.html' '//span[@id="structfield.box_me_up"]' 'box_me_up: Box<S, Global>'
|
||||
pub box_me_up: <S as Trait>::X,
|
||||
// @has 'normalize_assoc_item/struct.S.html' '//span[@id="structfield.generic"]' 'generic: (usize, isize)'
|
||||
pub generic: <Generic<usize> as Trait>::X,
|
||||
|
@ -61,3 +61,8 @@ pub const A: <usize as Lifetimes<'static>>::Y = &0;
|
|||
extern crate inner;
|
||||
// @has 'normalize_assoc_item/fn.foo.html' '//pre[@class="rust fn"]' "pub fn foo() -> i32"
|
||||
pub use inner::foo;
|
||||
|
||||
// @has 'normalize_assoc_item/fn.h.html' '//pre[@class="rust fn"]' "pub fn h<T>() -> IntoIter<T, Global>"
|
||||
pub fn h<T>() -> <Vec<T> as IntoIterator>::IntoIter {
|
||||
vec![].into_iter()
|
||||
}
|
||||
|
|
Loading…
Reference in a new issue