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librustdoc: flatten nested ifs

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This commit is contained in:
Yotam Ofek 2025-03-06 07:59:11 +00:00
parent 4559163ccb
commit fde37335aa
14 changed files with 203 additions and 220 deletions
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8
src/librustdoc/clean/inline.rs
View file

@ -563,11 +563,13 @@ pub(crate) fn build_impl(
// Return if the trait itself or any types of the generic parameters are doc(hidden).
let mut stack: Vec<&Type> = vec![&for_];
if let Some(did) = trait_.as_ref().map(|t| t.def_id()) {
if !document_hidden && tcx.is_doc_hidden(did) {
if let Some(did) = trait_.as_ref().map(|t| t.def_id())
&& !document_hidden
&& tcx.is_doc_hidden(did)
{
return;
}
}
if let Some(generics) = trait_.as_ref().and_then(|t| t.generics()) {
stack.extend(generics);
}

66
src/librustdoc/clean/mod.rs
View file

@ -828,30 +828,26 @@ fn clean_ty_generics<'tcx>(
.iter()
.flat_map(|(pred, _)| {
let mut projection = None;
let param_idx = (|| {
let param_idx = {
let bound_p = pred.kind();
match bound_p.skip_binder() {
ty::ClauseKind::Trait(pred) => {
if let ty::Param(param) = pred.self_ty().kind() {
return Some(param.index);
ty::ClauseKind::Trait(pred) if let ty::Param(param) = pred.self_ty().kind() => {
Some(param.index)
}
ty::ClauseKind::TypeOutlives(ty::OutlivesPredicate(ty, _reg))
if let ty::Param(param) = ty.kind() =>
{
Some(param.index)
}
ty::ClauseKind::TypeOutlives(ty::OutlivesPredicate(ty, _reg)) => {
if let ty::Param(param) = ty.kind() {
return Some(param.index);
}
}
ty::ClauseKind::Projection(p) => {
if let ty::Param(param) = p.projection_term.self_ty().kind() {
ty::ClauseKind::Projection(p)
if let ty::Param(param) = p.projection_term.self_ty().kind() =>
{
projection = Some(bound_p.rebind(p));
return Some(param.index);
Some(param.index)
}
_ => None,
}
_ => (),
}
None
})();
};
if let Some(param_idx) = param_idx
&& let Some(bounds) = impl_trait.get_mut(&param_idx)
@ -1378,15 +1374,15 @@ pub(crate) fn clean_middle_assoc_item(assoc_item: &ty::AssocItem, cx: &mut DocCo
tcx.fn_sig(assoc_item.def_id).instantiate_identity().input(0).skip_binder();
if self_arg_ty == self_ty {
item.decl.inputs.values[0].type_ = SelfTy;
} else if let ty::Ref(_, ty, _) = *self_arg_ty.kind() {
if ty == self_ty {
} else if let ty::Ref(_, ty, _) = *self_arg_ty.kind()
&& ty == self_ty
{
match item.decl.inputs.values[0].type_ {
BorrowedRef { ref mut type_, .. } => **type_ = SelfTy,
_ => unreachable!(),
}
}
}
}
let provided = match assoc_item.container {
ty::AssocItemContainer::Impl => true,
@ -2331,9 +2327,10 @@ fn clean_middle_opaque_bounds<'tcx>(
let bindings: ThinVec<_> = bounds
.iter()
.filter_map(|(bound, _)| {
if let ty::ClauseKind::Projection(proj) = bound.kind().skip_binder() {
if proj.projection_term.trait_ref(cx.tcx) == trait_ref.skip_binder() {
Some(AssocItemConstraint {
if let ty::ClauseKind::Projection(proj) = bound.kind().skip_binder()
&& proj.projection_term.trait_ref(cx.tcx) == trait_ref.skip_binder()
{
return Some(AssocItemConstraint {
assoc: projection_to_path_segment(
// FIXME: This needs to be made resilient for `AliasTerm`s that
// are associated consts.
@ -2343,13 +2340,9 @@ fn clean_middle_opaque_bounds<'tcx>(
kind: AssocItemConstraintKind::Equality {
term: clean_middle_term(bound.kind().rebind(proj.term), cx),
},
})
} else {
None
});
}
} else {
None
}
})
.collect();
@ -2743,8 +2736,7 @@ fn add_without_unwanted_attributes<'hir>(
}
let mut attr = attr.clone();
match attr {
hir::Attribute::Unparsed(ref mut normal) => {
if let [ident] = &*normal.path.segments {
hir::Attribute::Unparsed(ref mut normal) if let [ident] = &*normal.path.segments => {
let ident = ident.name;
if ident == sym::doc {
filter_doc_attr(&mut normal.args, is_inline);
@ -2754,12 +2746,10 @@ fn add_without_unwanted_attributes<'hir>(
attrs.push((Cow::Owned(attr), import_parent));
}
}
}
hir::Attribute::Parsed(..) => {
if is_inline {
hir::Attribute::Parsed(..) if is_inline => {
attrs.push((Cow::Owned(attr), import_parent));
}
}
_ => {}
}
}
}
@ -2961,17 +2951,17 @@ fn clean_extern_crate<'tcx>(
&& !cx.is_json_output();
let krate_owner_def_id = krate.owner_id.def_id;
if please_inline {
if let Some(items) = inline::try_inline(
if please_inline
&& let Some(items) = inline::try_inline(
cx,
Res::Def(DefKind::Mod, crate_def_id),
name,
Some((attrs, Some(krate_owner_def_id))),
&mut Default::default(),
) {
)
{
return items;
}
}
vec![Item::from_def_id_and_parts(
krate_owner_def_id.to_def_id(),

16
src/librustdoc/clean/types.rs
View file

@ -208,13 +208,13 @@ impl ExternalCrate {
.get_attrs(def_id, sym::doc)
.flat_map(|attr| attr.meta_item_list().unwrap_or_default());
for meta in meta_items {
if meta.has_name(sym::keyword) {
if let Some(v) = meta.value_str() {
if meta.has_name(sym::keyword)
&& let Some(v) = meta.value_str()
{
keyword = Some(v);
break;
}
}
}
return keyword.map(|p| (def_id, p));
}
None
@ -1071,8 +1071,7 @@ pub(crate) fn extract_cfg_from_attrs<'a, I: Iterator<Item = &'a hir::Attribute>
// treat #[target_feature(enable = "feat")] attributes as if they were
// #[doc(cfg(target_feature = "feat"))] attributes as well
for attr in hir_attr_lists(attrs, sym::target_feature) {
if attr.has_name(sym::enable) {
if attr.value_str().is_some() {
if attr.has_name(sym::enable) && attr.value_str().is_some() {
// Clone `enable = "feat"`, change to `target_feature = "feat"`.
// Unwrap is safe because `value_str` succeeded above.
let mut meta = attr.meta_item().unwrap().clone();
@ -1083,7 +1082,6 @@ pub(crate) fn extract_cfg_from_attrs<'a, I: Iterator<Item = &'a hir::Attribute>
}
}
}
}
if cfg == Cfg::True { None } else { Some(Arc::new(cfg)) }
}
@ -1160,12 +1158,12 @@ impl Attributes {
continue;
}
if let Some(items) = attr.meta_item_list() {
if items.iter().filter_map(|i| i.meta_item()).any(|it| it.has_name(flag)) {
if let Some(items) = attr.meta_item_list()
&& items.iter().filter_map(|i| i.meta_item()).any(|it| it.has_name(flag))
{
return true;
}
}
}
false
}

12
src/librustdoc/config.rs
View file

@ -645,11 +645,11 @@ impl Options {
let extension_css = matches.opt_str("e").map(|s| PathBuf::from(&s));
if let Some(ref p) = extension_css {
if !p.is_file() {
if let Some(ref p) = extension_css
&& !p.is_file()
{
dcx.fatal("option --extend-css argument must be a file");
}
}
let mut themes = Vec::new();
if matches.opt_present("theme") {
@ -720,11 +720,11 @@ impl Options {
}
let index_page = matches.opt_str("index-page").map(|s| PathBuf::from(&s));
if let Some(ref index_page) = index_page {
if !index_page.is_file() {
if let Some(ref index_page) = index_page
&& !index_page.is_file()
{
dcx.fatal("option `--index-page` argument must be a file");
}
}
let target = parse_target_triple(early_dcx, matches);
let maybe_sysroot = matches.opt_str("sysroot").map(PathBuf::from);

3
src/librustdoc/doctest/rust.rs
View file

@ -98,11 +98,10 @@ impl HirCollector<'_> {
let ast_attrs = self.tcx.hir().attrs(self.tcx.local_def_id_to_hir_id(def_id));
if let Some(ref cfg) =
extract_cfg_from_attrs(ast_attrs.iter(), self.tcx, &FxHashSet::default())
&& !cfg.matches(&self.tcx.sess.psess, Some(self.tcx.features()))
{
if !cfg.matches(&self.tcx.sess.psess, Some(self.tcx.features())) {
return;
}
}
let has_name = !name.is_empty();
if has_name {

4
src/librustdoc/formats/cache.rs
View file

@ -419,7 +419,9 @@ impl DocFolder for CacheBuilder<'_, '_> {
}
}
if let Some(generics) = i.trait_.as_ref().and_then(|t| t.generics()) {
if let Some(trait_) = &i.trait_
&& let Some(generics) = trait_.generics()
{
for bound in generics {
dids.extend(bound.def_id(self.cache));
}

9
src/librustdoc/html/highlight.rs
View file

@ -1102,9 +1102,9 @@ fn string_without_closing_tag<T: Display>(
});
}
if let Some(href_context) = href_context {
if let Some(href) =
href_context.context.shared.span_correspondence_map.get(&def_span).and_then(|href| {
if let Some(href_context) = href_context
&& let Some(href) = href_context.context.shared.span_correspondence_map.get(&def_span)
&& let Some(href) = {
let context = href_context.context;
// FIXME: later on, it'd be nice to provide two links (if possible) for all items:
// one to the documentation page and one to the source definition.
@ -1133,7 +1133,7 @@ fn string_without_closing_tag<T: Display>(
.map(|(doc_link, _, _)| doc_link)
}
}
})
}
{
if !open_tag {
// We're already inside an element which has the same klass, no need to give it
@ -1149,7 +1149,6 @@ fn string_without_closing_tag<T: Display>(
}
return Some("</a>");
}
}
if !open_tag {
write!(out, "{}", text_s).unwrap();
return None;

11
src/librustdoc/html/markdown.rs
View file

@ -1308,18 +1308,17 @@ impl LangString {
seen_other_tags = true;
data.unknown.push(x.to_owned());
}
LangStringToken::KeyValueAttribute(key, value) => {
if key == "class" {
LangStringToken::KeyValueAttribute("class", value) => {
data.added_classes.push(value.to_owned());
} else if let Some(extra) = extra {
extra.error_invalid_codeblock_attr(format!(
"unsupported attribute `{key}`"
));
}
LangStringToken::KeyValueAttribute(key, ..) if let Some(extra) = extra => {
extra
.error_invalid_codeblock_attr(format!("unsupported attribute `{key}`"));
}
LangStringToken::ClassAttribute(class) => {
data.added_classes.push(class.to_owned());
}
_ => {}
}
}
};

10
src/librustdoc/html/render/span_map.rs
View file

@ -95,11 +95,9 @@ impl SpanMapVisitor<'_> {
.unwrap_or(path.span);
self.matches.insert(span, link);
}
Res::Local(_) => {
if let Some(span) = self.tcx.hir().res_span(path.res) {
Res::Local(_) if let Some(span) = self.tcx.hir().res_span(path.res) => {
self.matches.insert(path.span, LinkFromSrc::Local(clean::Span::new(span)));
}
}
Res::PrimTy(p) => {
// FIXME: Doesn't handle "path-like" primitives like arrays or tuples.
self.matches.insert(path.span, LinkFromSrc::Primitive(PrimitiveType::from(p)));
@ -111,8 +109,9 @@ impl SpanMapVisitor<'_> {
/// Used to generate links on items' definition to go to their documentation page.
pub(crate) fn extract_info_from_hir_id(&mut self, hir_id: HirId) {
if let Node::Item(item) = self.tcx.hir_node(hir_id) {
if let Some(span) = self.tcx.def_ident_span(item.owner_id) {
if let Node::Item(item) = self.tcx.hir_node(hir_id)
&& let Some(span) = self.tcx.def_ident_span(item.owner_id)
{
let cspan = clean::Span::new(span);
// If the span isn't from the current crate, we ignore it.
if cspan.inner().is_dummy() || cspan.cnum(self.tcx.sess) != LOCAL_CRATE {
@ -121,7 +120,6 @@ impl SpanMapVisitor<'_> {
self.matches.insert(span, LinkFromSrc::Doc(item.owner_id.to_def_id()));
}
}
}
/// Adds the macro call into the span map. Returns `true` if the `span` was inside a macro
/// expansion, whether or not it was added to the span map.

31
src/librustdoc/passes/collect_intra_doc_links.rs
View file

@ -1334,15 +1334,13 @@ impl LinkCollector<'_, '_> {
}
// item can be non-local e.g. when using `#[rustc_doc_primitive = "pointer"]`
if let Some((src_id, dst_id)) = id.as_local().and_then(|dst_id| {
diag_info.item.item_id.expect_def_id().as_local().map(|src_id| (src_id, dst_id))
}) {
if self.cx.tcx.effective_visibilities(()).is_exported(src_id)
if let Some(dst_id) = id.as_local()
&& let Some(src_id) = diag_info.item.item_id.expect_def_id().as_local()
&& self.cx.tcx.effective_visibilities(()).is_exported(src_id)
&& !self.cx.tcx.effective_visibilities(()).is_exported(dst_id)
{
privacy_error(self.cx, diag_info, path_str);
}
}
Some(())
}
@ -1405,11 +1403,11 @@ impl LinkCollector<'_, '_> {
// which we want in some cases but not in others.
cache_errors: bool,
) -> Option<Vec<(Res, Option<UrlFragment>)>> {
if let Some(res) = self.visited_links.get(&key) {
if res.is_some() || cache_errors {
if let Some(res) = self.visited_links.get(&key)
&& (res.is_some() || cache_errors)
{
return res.clone().map(|r| vec![r]);
}
}
let mut candidates = self.resolve_with_disambiguator(&key, diag.clone());
@ -1432,11 +1430,11 @@ impl LinkCollector<'_, '_> {
// and after removing duplicated kinds, only one remains, the `ambiguity_error` function
// won't emit an error. So at this point, we can just take the first candidate as it was
// the first retrieved and use it to generate the link.
if let [candidate, _candidate2, ..] = *candidates {
if !ambiguity_error(self.cx, &diag, &key.path_str, &candidates, false) {
if let [candidate, _candidate2, ..] = *candidates
&& !ambiguity_error(self.cx, &diag, &key.path_str, &candidates, false)
{
candidates = vec![candidate];
}
}
let mut out = Vec::with_capacity(candidates.len());
for (res, def_id) in candidates {
@ -1480,8 +1478,8 @@ impl LinkCollector<'_, '_> {
// See https://github.com/rust-lang/rust/pull/76955#discussion_r493953382 for a good approach.
let mut err = ResolutionFailure::NotResolved(err);
for other_ns in [TypeNS, ValueNS, MacroNS] {
if other_ns != expected_ns {
if let Ok(&[res, ..]) = self
if other_ns != expected_ns
&& let Ok(&[res, ..]) = self
.resolve(path_str, other_ns, None, item_id, module_id)
.as_deref()
{
@ -1492,7 +1490,6 @@ impl LinkCollector<'_, '_> {
break;
}
}
}
resolution_failure(self, diag, path_str, disambiguator, smallvec![err]);
vec![]
}
@ -1674,13 +1671,13 @@ impl Disambiguator {
Ok(Some((d, &rest[1..], &rest[1..])))
} else {
for (suffix, kind) in suffixes {
if let Some(path_str) = link.strip_suffix(suffix) {
// Avoid turning `!` or `()` into an empty string
if !path_str.is_empty() {
if let Some(path_str) = link.strip_suffix(suffix)
&& !path_str.is_empty()
{
return Ok(Some((Kind(kind), path_str, link)));
}
}
}
Ok(None)
}
}

9
src/librustdoc/passes/collect_trait_impls.rs
View file

@ -177,12 +177,13 @@ pub(crate) fn collect_trait_impls(mut krate: Crate, cx: &mut DocContext<'_>) ->
} else if let Some(did) = target.def_id(&cx.cache) {
cleaner.items.insert(did.into());
}
if let Some(for_did) = for_.def_id(&cx.cache) {
if type_did_to_deref_target.insert(for_did, target).is_none() {
if let Some(for_did) = for_.def_id(&cx.cache)
&& type_did_to_deref_target.insert(for_did, target).is_none()
// Since only the `DefId` portion of the `Type` instances is known to be same for both the
// `Deref` target type and the impl for type positions, this map of types is keyed by
// `DefId` and for convenience uses a special cleaner that accepts `DefId`s directly.
if cleaner.keep_impl_with_def_id(for_did.into()) {
&& cleaner.keep_impl_with_def_id(for_did.into())
{
let mut targets = DefIdSet::default();
targets.insert(for_did);
add_deref_target(
@ -195,8 +196,6 @@ pub(crate) fn collect_trait_impls(mut krate: Crate, cx: &mut DocContext<'_>) ->
}
}
}
}
}
// Filter out external items that are not needed
new_items_external.retain(|it| {

6
src/librustdoc/passes/lint/html_tags.rs
View file

@ -28,9 +28,9 @@ pub(crate) fn visit_item(cx: &DocContext<'_>, item: &Item, hir_id: HirId, dox: &
// We don't try to detect stuff `<like, this>` because that's not valid HTML,
// and we don't try to detect stuff `<like this>` because that's not valid Rust.
let mut generics_end = range.end;
if let Some(Some(mut generics_start)) = (is_open_tag
&& dox[..generics_end].ends_with('>'))
.then(|| extract_path_backwards(dox, range.start))
if is_open_tag
&& dox[..generics_end].ends_with('>')
&& let Some(mut generics_start) = extract_path_backwards(dox, range.start)
{
while generics_start != 0
&& generics_end < dox.len()

12
src/librustdoc/passes/lint/unportable_markdown.rs
View file

@ -73,18 +73,18 @@ pub(crate) fn visit_item(cx: &DocContext<'_>, item: &Item, hir_id: HirId, dox: &
}
let parser_old = cmarko::Parser::new_ext(dox, main_body_opts_old()).into_offset_iter();
for (event, span) in parser_old {
if let cmarko::Event::Start(cmarko::Tag::BlockQuote) = event {
if !dox[span.clone()].starts_with("> ") {
if let cmarko::Event::Start(cmarko::Tag::BlockQuote) = event
&& !dox[span.clone()].starts_with("> ")
{
spaceless_block_quotes.remove(&span.start);
}
}
if let cmarko::Event::FootnoteReference(_) = event {
if !found_footnote_references.contains(&(span.start + 1)) {
if let cmarko::Event::FootnoteReference(_) = event
&& !found_footnote_references.contains(&(span.start + 1))
{
missing_footnote_references.insert(span.start + 1, span);
}
}
}
}
for start in spaceless_block_quotes {
let (span, precise) =

6
src/librustdoc/visit_lib.rs
View file

@ -57,13 +57,13 @@ impl LibEmbargoVisitor<'_, '_> {
}
for item in self.tcx.module_children(def_id).iter() {
if let Some(def_id) = item.res.opt_def_id() {
if item.vis.is_public() {
if let Some(def_id) = item.res.opt_def_id()
&& item.vis.is_public()
{
self.visit_item(def_id);
}
}
}
}
fn visit_item(&mut self, def_id: DefId) {
if self.document_hidden || !self.tcx.is_doc_hidden(def_id) {