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rustdoc: Replace where-bounded Clean impl with simple function #90750

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merged 4 commits into from
Nov 18, 2021
Merged

rustdoc: Replace where-bounded Clean impl with simple function #90750

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169b84f
Replace where-bounded Clean impl with function
camelid Nov 10, 2021
cf6a73c
Remove where bound from `clean_fn_decl_with_args`
camelid Nov 10, 2021
c615b11
Remove unnecessary reborrows
camelid Nov 10, 2021
c20ee3e
Add comments ensuring that generics are cleaned before args
camelid Nov 10, 2021
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46 changes: 28 additions & 18 deletions src/librustdoc/clean/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -109,7 +109,10 @@ impl Clean<GenericBound> for hir::GenericBound<'_> {
};

GenericBound::TraitBound(
PolyTrait { trait_: (trait_ref, &*bindings).clean(cx), generic_params: vec![] },
PolyTrait {
trait_: (trait_ref, &bindings[..]).clean(cx),
generic_params: vec![],
},
hir::TraitBoundModifier::None,
)
}
Expand Down Expand Up @@ -761,8 +764,12 @@ fn clean_fn_or_proc_macro(

impl<'a> Clean<Function> for (&'a hir::FnSig<'a>, &'a hir::Generics<'a>, hir::BodyId) {
fn clean(&self, cx: &mut DocContext<'_>) -> Function {
let (generics, decl) =
enter_impl_trait(cx, |cx| (self.1.clean(cx), (&*self.0.decl, self.2).clean(cx)));
let (generics, decl) = enter_impl_trait(cx, |cx| {
let generics = self.1.clean(cx);
let args = (self.0.decl.inputs, self.2).clean(cx);
let decl = clean_fn_decl_with_args(cx, self.0.decl, args);
(generics, decl)
});
Function { decl, generics, header: self.0.header }
}
}
Expand Down Expand Up @@ -804,17 +811,12 @@ impl<'a> Clean<Arguments> for (&'a [hir::Ty<'a>], hir::BodyId) {
}
}

impl<'a, A: Copy> Clean<FnDecl> for (&'a hir::FnDecl<'a>, A)
where
(&'a [hir::Ty<'a>], A): Clean<Arguments>,
{
fn clean(&self, cx: &mut DocContext<'_>) -> FnDecl {
FnDecl {
inputs: (self.0.inputs, self.1).clean(cx),
output: self.0.output.clean(cx),
c_variadic: self.0.c_variadic,
}
}
fn clean_fn_decl_with_args(
cx: &mut DocContext<'_>,
decl: &hir::FnDecl<'_>,
args: Arguments,
) -> FnDecl {
FnDecl { inputs: args, output: decl.output.clean(cx), c_variadic: decl.c_variadic }
}

impl<'tcx> Clean<FnDecl> for (DefId, ty::PolyFnSig<'tcx>) {
Expand Down Expand Up @@ -894,7 +896,10 @@ impl Clean<Item> for hir::TraitItem<'_> {
}
hir::TraitItemKind::Fn(ref sig, hir::TraitFn::Required(names)) => {
let (generics, decl) = enter_impl_trait(cx, |cx| {
(self.generics.clean(cx), (sig.decl, names).clean(cx))
let generics = self.generics.clean(cx);
let args = (sig.decl.inputs, names).clean(cx);
let decl = clean_fn_decl_with_args(cx, sig.decl, args);
(generics, decl)
});
let mut t = Function { header: sig.header, decl, generics };
if t.header.constness == hir::Constness::Const
Expand Down Expand Up @@ -1728,7 +1733,8 @@ impl Clean<BareFunctionDecl> for hir::BareFnTy<'_> {
fn clean(&self, cx: &mut DocContext<'_>) -> BareFunctionDecl {
let (generic_params, decl) = enter_impl_trait(cx, |cx| {
let generic_params = self.generic_params.iter().map(|x| x.clean(cx)).collect();
let decl = (self.decl, self.param_names).clean(cx);
let args = (self.decl.inputs, self.param_names).clean(cx);
let decl = clean_fn_decl_with_args(cx, self.decl, args);
(generic_params, decl)
});
BareFunctionDecl { unsafety: self.unsafety, abi: self.abi, decl, generic_params }
Expand Down Expand Up @@ -2025,8 +2031,12 @@ impl Clean<Item> for (&hir::ForeignItem<'_>, Option<Symbol>) {
let kind = match item.kind {
hir::ForeignItemKind::Fn(decl, names, ref generics) => {
let abi = cx.tcx.hir().get_foreign_abi(item.hir_id());
let (generics, decl) =
enter_impl_trait(cx, |cx| (generics.clean(cx), (decl, names).clean(cx)));
let (generics, decl) = enter_impl_trait(cx, |cx| {
let generics = generics.clean(cx);
let args = (decl.inputs, names).clean(cx);
let decl = clean_fn_decl_with_args(cx, decl, args);
(generics, decl)
});
ForeignFunctionItem(Function {
decl,
generics,
Expand Down