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Do not render unstable items for rustc doc #74351

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Jul 17, 2020
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45 changes: 17 additions & 28 deletions src/librustdoc/html/render.rs
Original file line number Diff line number Diff line change
Expand Up @@ -2229,12 +2229,15 @@ fn stability_tags(item: &clean::Item) -> String {
tags += &tag_html("deprecated", message);
}

if let Some(stab) = item.stability.as_ref().filter(|s| s.level == stability::Unstable) {
if stab.feature.as_deref() == Some("rustc_private") {
tags += &tag_html("internal", "Internal");
} else {
tags += &tag_html("unstable", "Experimental");
}
// The "rustc_private" crates are permanently unstable so it makes no sense
// to render "unstable" everywhere.
if item
.stability
.as_ref()
.map(|s| s.level == stability::Unstable && s.feature.as_deref() != Some("rustc_private"))
== Some(true)
{
tags += &tag_html("unstable", "Experimental");
}

if let Some(ref cfg) = item.attrs.cfg {
Expand Down Expand Up @@ -2285,15 +2288,13 @@ fn short_stability(item: &clean::Item, cx: &Context) -> Vec<String> {
));
}

if let Some(stab) = item.stability.as_ref().filter(|stab| stab.level == stability::Unstable) {
let is_rustc_private = stab.feature.as_deref() == Some("rustc_private");

let mut message = if is_rustc_private {
"<span class='emoji'>⚙️</span> This is an internal compiler API."
} else {
"<span class='emoji'>🔬</span> This is a nightly-only experimental API."
}
.to_owned();
// Render unstable items. But don't render "rustc_private" crates (internal compiler crates).
// Those crates are permanently unstable so it makes no sense to render "unstable" everywhere.
if let Some(stab) = item.stability.as_ref().filter(|stab| {
stab.level == stability::Unstable && stab.feature.as_deref() != Some("rustc_private")
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nit: we should be comparing against rustc_span::sym::rustc_private to avoid hitting the string interner lock here.

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@tesuji tesuji Jul 16, 2020

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I would love to. But stab.feature is Option<String>. I have a discussion for merging Stability and more between rustdoc and rustc APIs https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/Merge.20Stability.20in.20rustc_attr.20and.20rustdoc .

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Oh right this is rustdoc-cleaned stability. Fine as is then.

}) {
let mut message =
"<span class='emoji'>🔬</span> This is a nightly-only experimental API.".to_owned();

if let Some(feature) = stab.feature.as_deref() {
let mut feature = format!("<code>{}</code>", Escape(&feature));
Expand All @@ -2309,17 +2310,6 @@ fn short_stability(item: &clean::Item, cx: &Context) -> Vec<String> {
}

if let Some(unstable_reason) = &stab.unstable_reason {
// Provide a more informative message than the compiler help.
let unstable_reason = if is_rustc_private {
"This crate is being loaded from the sysroot, a permanently unstable location \
for private compiler dependencies. It is not intended for general use. Prefer \
using a public version of this crate from \
[crates.io](https://crates.io) via [`Cargo.toml`]\
(https://doc.rust-lang.org/cargo/reference/specifying-dependencies.html)."
} else {
unstable_reason
};

let mut ids = cx.id_map.borrow_mut();
message = format!(
"<details><summary>{}</summary>{}</details>",
Expand All @@ -2335,8 +2325,7 @@ fn short_stability(item: &clean::Item, cx: &Context) -> Vec<String> {
);
}

let class = if is_rustc_private { "internal" } else { "unstable" };
stability.push(format!("<div class='stab {}'>{}</div>", class, message));
stability.push(format!("<div class='stab unstable'>{}</div>", message));
}

if let Some(ref cfg) = item.attrs.cfg {
Expand Down
6 changes: 0 additions & 6 deletions src/librustdoc/html/static/themes/ayu.css
Original file line number Diff line number Diff line change
Expand Up @@ -216,10 +216,6 @@ a {
color: #39AFD7;
}

.stab.internal a {
color: #304FFE;
}

.collapse-toggle {
color: #999;
}
Expand Down Expand Up @@ -254,7 +250,6 @@ a {
}

.stab.unstable,
.stab.internal,
.stab.deprecated,
.stab.portability {
color: #c5c5c5;
Expand Down Expand Up @@ -457,7 +452,6 @@ pre.rust .doccomment {}
.content .highlighted.type {}
pre.rust .kw-2,pre.rust .prelude-ty {}
.content span.trait,.content a.trait,.block a.current.trait {}
.stab.internal {}

@media (max-width: 700px) {
.sidebar-menu {
Expand Down
5 changes: 0 additions & 5 deletions src/librustdoc/html/static/themes/dark.css
Original file line number Diff line number Diff line change
Expand Up @@ -172,10 +172,6 @@ a {
color: #D2991D;
}

.stab.internal a {
color: #304FFE;
}

a.test-arrow {
color: #dedede;
}
Expand Down Expand Up @@ -214,7 +210,6 @@ a.test-arrow {
}

.stab.unstable { background: #FFF5D6; border-color: #FFC600; color: #2f2f2f; }
.stab.internal { background: #FFB9B3; border-color: #B71C1C; color: #2f2f2f; }
.stab.deprecated { background: #F3DFFF; border-color: #7F0087; color: #2f2f2f; }
.stab.portability { background: #C4ECFF; border-color: #7BA5DB; color: #2f2f2f; }

Expand Down
5 changes: 0 additions & 5 deletions src/librustdoc/html/static/themes/light.css
Original file line number Diff line number Diff line change
Expand Up @@ -173,10 +173,6 @@ a {
color: #3873AD;
}

.stab.internal a {
color: #304FFE;
}

a.test-arrow {
color: #f5f5f5;
}
Expand Down Expand Up @@ -215,7 +211,6 @@ a.test-arrow {
}

.stab.unstable { background: #FFF5D6; border-color: #FFC600; }
.stab.internal { background: #FFB9B3; border-color: #B71C1C; }
.stab.deprecated { background: #F3DFFF; border-color: #7F0087; }
.stab.portability { background: #C4ECFF; border-color: #7BA5DB; }

Expand Down
10 changes: 6 additions & 4 deletions src/test/rustdoc/internal.rs
Original file line number Diff line number Diff line change
@@ -1,11 +1,13 @@
// compile-flags: -Z force-unstable-if-unmarked

// @matches internal/index.html '//*[@class="docblock-short"]/span[@class="stab internal"]' \
// 'Internal'
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This test should be modified to check that the unstable marker is not added for rustc_private.

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Done

// Check that the unstable marker is not added for "rustc_private".

// @!matches internal/index.html '//*[@class="docblock-short"]/span[@class="stab unstable"]'
// @!matches internal/index.html '//*[@class="docblock-short"]/span[@class="stab internal"]'
// @matches - '//*[@class="docblock-short"]' 'Docs'

// @has internal/struct.S.html '//*[@class="stab internal"]' \
// 'This is an internal compiler API. (rustc_private)'
// @!has internal/struct.S.html '//*[@class="stab unstable"]'
// @!has internal/struct.S.html '//*[@class="stab internal"]'
/// Docs
pub struct S;

Expand Down