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Rollup merge of rust-lang#76571 - lzutao:rustdoc-private-traits, r=jy…
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…n514

Ignore rustc_private items from std docs

By ignoring rustc_private items for non local impl block,
this may fix rust-lang#74672 and fix rust-lang#75588 .

This might suppress rust-lang#76529 if it is simple enough for backport.
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Dylan-DPC authored Sep 12, 2020
2 parents 2beb32c + c3d048a commit fcf82df
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Showing 5 changed files with 66 additions and 9 deletions.
19 changes: 10 additions & 9 deletions src/librustdoc/clean/inline.rs
Original file line number Diff line number Diff line change
Expand Up @@ -337,18 +337,13 @@ pub fn build_impl(
// reachable in rustdoc generated documentation
if !did.is_local() {
if let Some(traitref) = associated_trait {
if !cx.renderinfo.borrow().access_levels.is_public(traitref.def_id) {
let did = traitref.def_id;
if !cx.renderinfo.borrow().access_levels.is_public(did) {
return;
}
}

// Skip foreign unstable traits from lists of trait implementations and
// such. This helps prevent dependencies of the standard library, for
// example, from getting documented as "traits `u32` implements" which
// isn't really too helpful.
if let Some(trait_did) = associated_trait {
if let Some(stab) = cx.tcx.lookup_stability(trait_did.def_id) {
if stab.level.is_unstable() {
if let Some(stab) = tcx.lookup_stability(did) {
if stab.level.is_unstable() && stab.feature == sym::rustc_private {
return;
}
}
Expand All @@ -372,6 +367,12 @@ pub fn build_impl(
if !cx.renderinfo.borrow().access_levels.is_public(did) {
return;
}

if let Some(stab) = tcx.lookup_stability(did) {
if stab.level.is_unstable() && stab.feature == sym::rustc_private {
return;
}
}
}
}

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13 changes: 13 additions & 0 deletions src/test/rustdoc/auxiliary/real_gimli.rs
Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@
// aux-build:realcore.rs

#![crate_name = "real_gimli"]
#![feature(staged_api, extremely_unstable)]
#![unstable(feature = "rustc_private", issue = "none")]

extern crate realcore;

#[unstable(feature = "rustc_private", issue = "none")]
pub struct EndianSlice;

#[unstable(feature = "rustc_private", issue = "none")]
impl realcore::Deref for EndianSlice {}
15 changes: 15 additions & 0 deletions src/test/rustdoc/auxiliary/realcore.rs
Original file line number Diff line number Diff line change
@@ -0,0 +1,15 @@
#![crate_name = "realcore"]
#![feature(staged_api)]
#![unstable(feature = "extremely_unstable", issue = "none")]

#[unstable(feature = "extremely_unstable_foo", issue = "none")]
pub struct Foo {}

#[unstable(feature = "extremely_unstable_foo", issue = "none")]
pub trait Join {}

#[unstable(feature = "extremely_unstable_foo", issue = "none")]
impl Join for Foo {}

#[stable(feature = "faked_deref", since = "1.47.0")]
pub trait Deref {}
18 changes: 18 additions & 0 deletions src/test/rustdoc/issue-75588.rs
Original file line number Diff line number Diff line change
@@ -0,0 +1,18 @@
// ignore-tidy-linelength
// aux-build:realcore.rs
// aux-build:real_gimli.rs

// Ensure unstably exported traits have their Implementors sections.

#![crate_name = "foo"]
#![feature(extremely_unstable_foo)]

extern crate realcore;
extern crate real_gimli;

// issue #74672
// @!has foo/trait.Deref.html '//*[@id="impl-Deref-for-EndianSlice"]//code' 'impl Deref for EndianSlice'
pub use realcore::Deref;

// @has foo/trait.Join.html '//*[@id="impl-Join-for-Foo"]//code' 'impl Join for Foo'
pub use realcore::Join;
10 changes: 10 additions & 0 deletions src/tools/linkchecker/main.rs
Original file line number Diff line number Diff line change
Expand Up @@ -142,6 +142,16 @@ fn is_exception(file: &Path, link: &str) -> bool {
if let Some(entry) = LINKCHECK_EXCEPTIONS.iter().find(|&(f, _)| file.ends_with(f)) {
entry.1.contains(&link)
} else {
// FIXME(#63351): Concat trait in alloc/slice reexported in primitive page
//
// NOTE: This cannot be added to `LINKCHECK_EXCEPTIONS` because the resolved path
// calculated in `check` function is outside `build/<triple>/doc` dir.
// So the `strip_prefix` method just returns the old absolute broken path.
if file.ends_with("std/primitive.slice.html") {
if link.ends_with("std/primitive.slice.html") {
return true;
}
}
false
}
}
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