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Improve display of enum variants #90089

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Nov 20, 2021
Merged

Improve display of enum variants #90089

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24 changes: 11 additions & 13 deletions src/librustdoc/html/render/print_item.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1080,7 +1080,7 @@ fn item_enum(w: &mut Buffer, cx: &Context<'_>, it: &clean::Item, e: &clean::Enum
cx.derive_id(format!("{}.{}", ItemType::Variant, variant.name.as_ref().unwrap()));
write!(
w,
"<div id=\"{id}\" class=\"variant small-section-header\">\
"<h3 id=\"{id}\" class=\"variant small-section-header\">\
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<a href=\"#{id}\" class=\"anchor field\"></a>\
<code>{name}",
id = id,
Expand All @@ -1093,9 +1093,7 @@ fn item_enum(w: &mut Buffer, cx: &Context<'_>, it: &clean::Item, e: &clean::Enum
}
w.write_str("</code>");
render_stability_since(w, variant, it, cx.tcx());
w.write_str("</div>");
document(w, cx, variant, Some(it), HeadingOffset::H3);
document_non_exhaustive(w, variant);
w.write_str("</h3>");

use crate::clean::Variant;
if let Some((extra, fields)) = match *variant.kind {
Expand All @@ -1109,12 +1107,8 @@ fn item_enum(w: &mut Buffer, cx: &Context<'_>, it: &clean::Item, e: &clean::Enum
variant.name.as_ref().unwrap()
));
write!(w, "<div class=\"sub-variant\" id=\"{id}\">", id = variant_id);
write!(
w,
"<h3>{extra}Fields of <b>{name}</b></h3><div>",
extra = extra,
name = variant.name.as_ref().unwrap(),
);
write!(w, "<h4>{extra}Fields</h4>", extra = extra,);
document_non_exhaustive(w, variant);
for field in fields {
match *field.kind {
clean::StrippedItem(box clean::StructFieldItem(_)) => {}
Expand All @@ -1126,21 +1120,25 @@ fn item_enum(w: &mut Buffer, cx: &Context<'_>, it: &clean::Item, e: &clean::Enum
));
write!(
w,
"<span id=\"{id}\" class=\"variant small-section-header\">\
"<div class=\"sub-variant-field\">\
<span id=\"{id}\" class=\"variant small-section-header\">\
<a href=\"#{id}\" class=\"anchor field\"></a>\
<code>{f}:&nbsp;{t}</code>\
</span>",
id = id,
f = field.name.as_ref().unwrap(),
t = ty.print(cx)
);
document(w, cx, field, Some(variant), HeadingOffset::H4);
document(w, cx, field, Some(variant), HeadingOffset::H5);
write!(w, "</div>");
}
_ => unreachable!(),
}
}
w.write_str("</div></div>");
w.write_str("</div>");
}

document(w, cx, variant, Some(it), HeadingOffset::H4);
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Hmm, should this be H3?

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I think (iirc) that it means the biggest heading will be h4 (please someone correct me if I'm wrong).

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@camelid camelid Nov 17, 2021 •
edited
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But I think the heading immediately above (in the HTML, not the Rust source) is h3?

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Yes, this is correct. In the demo: https://rustdoc.crud.net/jsha/enum-headings/foo/enum.Token.html#variant.Declaration

"Declaration" is h3, and then "Variant-First" is h4, as it should be.

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Ok, I guess I'm still confused by HeadingOffset's numbering.

}
}
let def_id = it.def_id.expect_def_id();
Expand Down
29 changes: 16 additions & 13 deletions src/librustdoc/html/static/css/rustdoc.css
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Original file line number Diff line number Diff line change
Expand Up @@ -1101,25 +1101,28 @@ a.test-arrow:hover{
margin-right: 5px;
}

.sub-variant, .sub-variant > h3 {
margin-top: 0px !important;
padding-top: 1px;
h3.variant {
font-weight: 600;
font-size: 1.1em;
margin-bottom: 10px;
border-bottom: none;
}

#main .sub-variant > h3 {
font-size: 15px;
margin-left: 25px;
margin-bottom: 5px;
.sub-variant h4 {
font-size: 1em;
font-weight: 400;
border-bottom: none;
margin-top: 0;
margin-bottom: 0;
}

.sub-variant > div {
margin-left: 20px;
margin-bottom: 10px;
.sub-variant {
margin-left: 24px;
margin-bottom: 40px;
}

.sub-variant > div > span {
display: block;
position: relative;
.sub-variant > .sub-variant-field {
margin-left: 24px;
}

.toggle-label {
Expand Down
40 changes: 20 additions & 20 deletions src/test/rustdoc-gui/headings.goml
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
// This test check that headers (a) have the correct heading level, (b) are the right size,
// This test checks that headers (a) have the correct heading level, (b) are the right size,
// and (c) have the correct underlining (or absence of underlining).
// The sizes may change as design changes, but try to make sure a lower header is never bigger than
// its parent headers. Also make sure lower headers don't have underlines when their parents lack
Expand Down Expand Up @@ -67,25 +67,25 @@ assert-css: ("h4#top-doc-prose-sub-sub-heading", {"border-bottom-width": "1px"})
assert-css: ("h2#variants", {"font-size": "22.4px"})
assert-css: ("h2#variants", {"border-bottom-width": "1px"})

assert-css: ("h3#none-prose-title", {"font-size": "20.8px"})
assert-css: ("h3#none-prose-title", {"border-bottom-width": "0px"})
assert-css: ("h4#none-prose-sub-heading", {"font-size": "16px"})
assert-css: ("h4#none-prose-sub-heading", {"border-bottom-width": "0px"})

assert-css: ("h3#wrapped-prose-title", {"font-size": "20.8px"})
assert-css: ("h3#wrapped-prose-title", {"border-bottom-width": "0px"})
assert-css: ("h4#wrapped-prose-sub-heading", {"font-size": "16px"})
assert-css: ("h4#wrapped-prose-sub-heading", {"border-bottom-width": "0px"})

assert-css: ("h4#wrapped0-prose-title", {"font-size": "16px"})
assert-css: ("h4#wrapped0-prose-title", {"border-bottom-width": "0px"})
assert-css: ("h5#wrapped0-prose-sub-heading", {"font-size": "16px"})
assert-css: ("h5#wrapped0-prose-sub-heading", {"border-bottom-width": "0px"})

assert-css: ("h4#structy-prose-title", {"font-size": "16px"})
assert-css: ("h4#structy-prose-title", {"border-bottom-width": "0px"})
assert-css: ("h5#structy-prose-sub-heading", {"font-size": "16px"})
assert-css: ("h5#structy-prose-sub-heading", {"border-bottom-width": "0px"})
assert-css: ("h4#none-prose-title", {"font-size": "16px"})
assert-css: ("h4#none-prose-title", {"border-bottom-width": "0px"})
assert-css: ("h5#none-prose-sub-heading", {"font-size": "16px"})
assert-css: ("h5#none-prose-sub-heading", {"border-bottom-width": "0px"})

assert-css: ("h4#wrapped-prose-title", {"font-size": "16px"})
assert-css: ("h4#wrapped-prose-title", {"border-bottom-width": "0px"})
assert-css: ("h5#wrapped-prose-sub-heading", {"font-size": "16px"})
assert-css: ("h5#wrapped-prose-sub-heading", {"border-bottom-width": "0px"})

assert-css: ("h5#wrapped0-prose-title", {"font-size": "16px"})
assert-css: ("h5#wrapped0-prose-title", {"border-bottom-width": "0px"})
assert-css: ("h6#wrapped0-prose-sub-heading", {"font-size": "15.2px"})
assert-css: ("h6#wrapped0-prose-sub-heading", {"border-bottom-width": "0px"})

assert-css: ("h5#structy-prose-title", {"font-size": "16px"})
assert-css: ("h5#structy-prose-title", {"border-bottom-width": "0px"})
assert-css: ("h6#structy-prose-sub-heading", {"font-size": "15.2px"})
assert-css: ("h6#structy-prose-sub-heading", {"border-bottom-width": "0px"})

assert-css: ("h2#implementations", {"font-size": "22.4px"})
assert-css: ("h2#implementations", {"border-bottom-width": "1px"})
Expand Down
40 changes: 40 additions & 0 deletions src/test/rustdoc/enum-headings.rs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,40 @@
#![crate_name = "foo"]
// @has foo/enum.Token.html
/// A token!
/// # First
/// Some following text...
// @has - '//h2[@id="first"]' "First"
pub enum Token {
/// A declaration!
/// # Variant-First
/// Some following text...
// @has - '//h4[@id="variant-first"]' "Variant-First"
Declaration {
/// A version!
/// # Variant-Field-First
/// Some following text...
// @has - '//h5[@id="variant-field-first"]' "Variant-Field-First"
version: String,
},
/// A Zoople!
/// # Variant-First
Zoople(
// @has - '//h5[@id="variant-tuple-field-first"]' "Variant-Tuple-Field-First"
/// Zoople's first variant!
/// # Variant-Tuple-Field-First
/// Some following text...
usize,
),
/// Unfinished business!
/// # Non-Exhaustive-First
/// Some following text...
// @has - '//h4[@id="non-exhaustive-first"]' "Non-Exhaustive-First"
#[non_exhaustive]
Unfinished {
/// This is x.
/// # X-First
/// Some following text...
// @has - '//h5[@id="x-first"]' "X-First"
x: usize,
},
}
4 changes: 2 additions & 2 deletions src/test/rustdoc/tuple-struct-fields-doc.rs
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Expand Up @@ -20,10 +20,10 @@ pub struct Foo(

// @has foo/enum.Bar.html
// @has - '//pre[@class="rust enum"]' 'BarVariant(String),'
// @matches - '//*[@id="variant.BarVariant.fields"]/h3' '^Tuple Fields of BarVariant$'
// @matches - '//*[@id="variant.BarVariant.fields"]/h4' '^Tuple Fields$'
// @has - '//*[@id="variant.BarVariant.field.0"]' '0: String'
// @has - '//*[@id="variant.BarVariant.fields"]//*[@class="docblock"]' 'Hello docs'
// @matches - '//*[@id="variant.FooVariant.fields"]/h3' '^Fields of FooVariant$'
// @matches - '//*[@id="variant.FooVariant.fields"]/h4' '^Fields$'
pub enum Bar {
BarVariant(
/// Hello docs
Expand Down