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hir: Use InferArg
in ArrayLen::Infer
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@ -2305,7 +2305,10 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
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match c.value.kind {
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ExprKind::Underscore => {
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if self.tcx.features().generic_arg_infer {
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hir::ArrayLen::Infer(self.lower_node_id(c.id), self.lower_span(c.value.span))
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hir::ArrayLen::Infer(hir::InferArg {
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hir_id: self.lower_node_id(c.id),
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span: self.lower_span(c.value.span),
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})
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} else {
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feature_err(
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&self.tcx.sess,
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@ -1531,14 +1531,16 @@ pub type Lit = Spanned<LitKind>;
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#[derive(Copy, Clone, Debug, HashStable_Generic)]
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pub enum ArrayLen {
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Infer(HirId, Span),
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Infer(InferArg),
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Body(AnonConst),
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}
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impl ArrayLen {
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pub fn hir_id(&self) -> HirId {
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match self {
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&ArrayLen::Infer(hir_id, _) | &ArrayLen::Body(AnonConst { hir_id, .. }) => hir_id,
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ArrayLen::Infer(InferArg { hir_id, .. }) | ArrayLen::Body(AnonConst { hir_id, .. }) => {
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*hir_id
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}
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}
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}
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}
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@ -2423,7 +2425,7 @@ impl<'hir> Ty<'hir> {
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TyKind::Infer => true,
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TyKind::Slice(ty) => ty.is_suggestable_infer_ty(),
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TyKind::Array(ty, length) => {
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ty.is_suggestable_infer_ty() || matches!(length, ArrayLen::Infer(_, _))
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ty.is_suggestable_infer_ty() || matches!(length, ArrayLen::Infer(..))
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}
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TyKind::Tup(tys) => tys.iter().any(Self::is_suggestable_infer_ty),
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TyKind::Ptr(mut_ty) | TyKind::Ref(_, mut_ty) => mut_ty.ty.is_suggestable_infer_ty(),
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@ -669,7 +669,7 @@ pub fn walk_pat_field<'v, V: Visitor<'v>>(visitor: &mut V, field: &'v PatField<'
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pub fn walk_array_len<'v, V: Visitor<'v>>(visitor: &mut V, len: &'v ArrayLen) {
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match len {
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&ArrayLen::Infer(hir_id, _span) => visitor.visit_id(hir_id),
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ArrayLen::Infer(InferArg { hir_id, span: _ }) => visitor.visit_id(*hir_id),
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ArrayLen::Body(c) => visitor.visit_anon_const(c),
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}
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}
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@ -2529,7 +2529,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
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}
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hir::TyKind::Array(ty, length) => {
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let length = match length {
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&hir::ArrayLen::Infer(_, span) => self.ct_infer(tcx.types.usize, None, span),
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hir::ArrayLen::Infer(inf) => self.ct_infer(tcx.types.usize, None, inf.span),
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hir::ArrayLen::Body(constant) => {
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ty::Const::from_anon_const(tcx, constant.def_id)
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}
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@ -146,8 +146,8 @@ impl<'v> Visitor<'v> for HirPlaceholderCollector {
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}
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}
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fn visit_array_length(&mut self, length: &'v hir::ArrayLen) {
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if let &hir::ArrayLen::Infer(_, span) = length {
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self.0.push(span);
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if let hir::ArrayLen::Infer(inf) = length {
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self.0.push(inf.span);
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}
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intravisit::walk_array_len(self, length)
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}
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@ -956,7 +956,7 @@ impl<'a> State<'a> {
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fn print_array_length(&mut self, len: &hir::ArrayLen) {
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match len {
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hir::ArrayLen::Infer(_, _) => self.word("_"),
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hir::ArrayLen::Infer(..) => self.word("_"),
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hir::ArrayLen::Body(ct) => self.print_anon_const(ct),
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}
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}
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@ -405,7 +405,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
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pub fn array_length_to_const(&self, length: &hir::ArrayLen) -> ty::Const<'tcx> {
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match length {
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&hir::ArrayLen::Infer(_, span) => self.ct_infer(self.tcx.types.usize, None, span),
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hir::ArrayLen::Infer(inf) => self.ct_infer(self.tcx.types.usize, None, inf.span),
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hir::ArrayLen::Body(anon_const) => {
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let span = self.tcx.def_span(anon_const.def_id);
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let c = ty::Const::from_anon_const(self.tcx, anon_const.def_id);
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@ -1835,7 +1835,7 @@ pub(crate) fn clean_ty<'tcx>(ty: &hir::Ty<'tcx>, cx: &mut DocContext<'tcx>) -> T
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TyKind::Slice(ty) => Slice(Box::new(clean_ty(ty, cx))),
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TyKind::Array(ty, ref length) => {
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let length = match length {
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hir::ArrayLen::Infer(_, _) => "_".to_string(),
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hir::ArrayLen::Infer(..) => "_".to_string(),
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hir::ArrayLen::Body(anon_const) => {
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// NOTE(min_const_generics): We can't use `const_eval_poly` for constants
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// as we currently do not supply the parent generics to anonymous constants
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