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Commit f7640d5

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yotamofekyotamofek
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make doc_impl_item and render_default_items receive impl fmt::Write 
1 parent 642995c commit f7640d5

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1 file changed

+108
-126
lines changed
  • src/librustdoc/html/render

1 file changed

+108
-126
lines changed

‎src/librustdoc/html/render/mod.rs‎

Lines changed: 108 additions & 126 deletions
Original file line numberDiff line numberDiff line change
@@ -47,6 +47,7 @@ use std::path::PathBuf;
4747
use std::{fs, str};
4848

4949
use askama::Template;
50+
use itertools::Either;
5051
use rustc_attr_parsing::{
5152
ConstStability, DeprecatedSince, Deprecation, RustcVersion, StabilityLevel, StableSince,
5253
};
@@ -1644,8 +1645,8 @@ fn render_impl(
16441645
// `containing_item` is used for rendering stability info. If the parent is a trait impl,
16451646
// `containing_item` will the grandparent, since trait impls can't have stability attached.
16461647
fn doc_impl_item(
1647-
boring: &mut String,
1648-
interesting: &mut String,
1648+
boring: impl fmt::Write,
1649+
interesting: impl fmt::Write,
16491650
cx: &Context<'_>,
16501651
item: &clean::Item,
16511652
parent: &clean::Item,
@@ -1654,7 +1655,7 @@ fn render_impl(
16541655
is_default_item: bool,
16551656
trait_: Option<&clean::Trait>,
16561657
rendering_params: ImplRenderingParameters,
1657-
) {
1658+
) -> fmt::Result {
16581659
let item_type = item.type_();
16591660
let name = item.name.as_ref().unwrap();
16601661

@@ -1729,15 +1730,16 @@ fn render_impl(
17291730
);
17301731
}
17311732
}
1732-
let w = if short_documented && trait_.is_some() { interesting } else { boring };
1733+
let mut w = if short_documented && trait_.is_some() {
1734+
Either::Left(interesting)
1735+
} else {
1736+
Either::Right(boring)
1737+
};
17331738

17341739
let toggled = !doc_buffer.is_empty();
17351740
if toggled {
17361741
let method_toggle_class = if item_type.is_method() { " method-toggle" } else { "" };
1737-
write_str(
1738-
w,
1739-
format_args!("<details class=\"toggle{method_toggle_class}\" open><summary>"),
1740-
);
1742+
write!(w, "<details class=\"toggle{method_toggle_class}\" open><summary>")?;
17411743
}
17421744
match &item.kind {
17431745
clean::MethodItem(..) | clean::RequiredMethodItem(_) => {
@@ -1752,172 +1754,151 @@ fn render_impl(
17521754
.find(|item| item.name.map(|n| n == *name).unwrap_or(false))
17531755
})
17541756
.map(|item| format!("{}.{name}", item.type_()));
1755-
write_str(
1757+
write!(
17561758
w,
1757-
format_args!(
1758-
"<section id=\"{id}\" class=\"{item_type}{in_trait_class}\">\
1759+
"<section id=\"{id}\" class=\"{item_type}{in_trait_class}\">\
17591760
{}",
1760-
render_rightside(cx, item, render_mode)
1761-
),
1762-
);
1761+
render_rightside(cx, item, render_mode)
1762+
)?;
17631763
if trait_.is_some() {
17641764
// Anchors are only used on trait impls.
1765-
write_str(w, format_args!("<a href=\"#{id}\" class=\"anchor\">§</a>"));
1765+
write!(w, "<a href=\"#{id}\" class=\"anchor\">§</a>")?;
17661766
}
1767-
write_str(
1767+
write!(
17681768
w,
1769-
format_args!(
1770-
"<h4 class=\"code-header\">{}</h4></section>",
1771-
render_assoc_item(
1772-
item,
1773-
link.anchor(source_id.as_ref().unwrap_or(&id)),
1774-
ItemType::Impl,
1775-
cx,
1776-
render_mode,
1777-
),
1769+
"<h4 class=\"code-header\">{}</h4></section>",
1770+
render_assoc_item(
1771+
item,
1772+
link.anchor(source_id.as_ref().unwrap_or(&id)),
1773+
ItemType::Impl,
1774+
cx,
1775+
render_mode,
17781776
),
1779-
);
1777+
)?;
17801778
}
17811779
}
17821780
clean::RequiredAssocConstItem(generics, ty) => {
17831781
let source_id = format!("{item_type}.{name}");
17841782
let id = cx.derive_id(&source_id);
1785-
write_str(
1783+
write!(
17861784
w,
1787-
format_args!(
1788-
"<section id=\"{id}\" class=\"{item_type}{in_trait_class}\">\
1785+
"<section id=\"{id}\" class=\"{item_type}{in_trait_class}\">\
17891786
{}",
1790-
render_rightside(cx, item, render_mode)
1791-
),
1792-
);
1787+
render_rightside(cx, item, render_mode)
1788+
)?;
17931789
if trait_.is_some() {
17941790
// Anchors are only used on trait impls.
1795-
write_str(w, format_args!("<a href=\"#{id}\" class=\"anchor\">§</a>"));
1791+
write!(w, "<a href=\"#{id}\" class=\"anchor\">§</a>")?;
17961792
}
1797-
write_str(
1793+
write!(
17981794
w,
1799-
format_args!(
1800-
"<h4 class=\"code-header\">{}</h4></section>",
1801-
assoc_const(
1802-
item,
1803-
generics,
1804-
ty,
1805-
AssocConstValue::None,
1806-
link.anchor(if trait_.is_some() { &source_id } else { &id }),
1807-
0,
1808-
cx,
1809-
)
1795+
"<h4 class=\"code-header\">{}</h4></section>",
1796+
assoc_const(
1797+
item,
1798+
generics,
1799+
ty,
1800+
AssocConstValue::None,
1801+
link.anchor(if trait_.is_some() { &source_id } else { &id }),
1802+
0,
1803+
cx,
18101804
),
1811-
);
1805+
)?;
18121806
}
18131807
clean::ProvidedAssocConstItem(ci) | clean::ImplAssocConstItem(ci) => {
18141808
let source_id = format!("{item_type}.{name}");
18151809
let id = cx.derive_id(&source_id);
1816-
write_str(
1810+
write!(
18171811
w,
1818-
format_args!(
1819-
"<section id=\"{id}\" class=\"{item_type}{in_trait_class}\">\
1812+
"<section id=\"{id}\" class=\"{item_type}{in_trait_class}\">\
18201813
{}",
1821-
render_rightside(cx, item, render_mode)
1822-
),
1823-
);
1814+
render_rightside(cx, item, render_mode),
1815+
)?;
18241816
if trait_.is_some() {
18251817
// Anchors are only used on trait impls.
1826-
write_str(w, format_args!("<a href=\"#{id}\" class=\"anchor\">§</a>"));
1818+
write!(w, "<a href=\"#{id}\" class=\"anchor\">§</a>")?;
18271819
}
1828-
write_str(
1820+
write!(
18291821
w,
1830-
format_args!(
1831-
"<h4 class=\"code-header\">{}</h4></section>",
1832-
assoc_const(
1833-
item,
1834-
&ci.generics,
1835-
&ci.type_,
1836-
match item.kind {
1837-
clean::ProvidedAssocConstItem(_) =>
1838-
AssocConstValue::TraitDefault(&ci.kind),
1839-
clean::ImplAssocConstItem(_) => AssocConstValue::Impl(&ci.kind),
1840-
_ => unreachable!(),
1841-
},
1842-
link.anchor(if trait_.is_some() { &source_id } else { &id }),
1843-
0,
1844-
cx,
1845-
)
1822+
"<h4 class=\"code-header\">{}</h4></section>",
1823+
assoc_const(
1824+
item,
1825+
&ci.generics,
1826+
&ci.type_,
1827+
match item.kind {
1828+
clean::ProvidedAssocConstItem(_) =>
1829+
AssocConstValue::TraitDefault(&ci.kind),
1830+
clean::ImplAssocConstItem(_) => AssocConstValue::Impl(&ci.kind),
1831+
_ => unreachable!(),
1832+
},
1833+
link.anchor(if trait_.is_some() { &source_id } else { &id }),
1834+
0,
1835+
cx,
18461836
),
1847-
);
1837+
)?;
18481838
}
18491839
clean::RequiredAssocTypeItem(generics, bounds) => {
18501840
let source_id = format!("{item_type}.{name}");
18511841
let id = cx.derive_id(&source_id);
1852-
write_str(
1842+
write!(
18531843
w,
1854-
format_args!(
1855-
"<section id=\"{id}\" class=\"{item_type}{in_trait_class}\">\
1844+
"<section id=\"{id}\" class=\"{item_type}{in_trait_class}\">\
18561845
{}",
1857-
render_rightside(cx, item, render_mode)
1858-
),
1859-
);
1846+
render_rightside(cx, item, render_mode),
1847+
)?;
18601848
if trait_.is_some() {
18611849
// Anchors are only used on trait impls.
1862-
write_str(w, format_args!("<a href=\"#{id}\" class=\"anchor\">§</a>"));
1850+
write!(w, "<a href=\"#{id}\" class=\"anchor\">§</a>")?;
18631851
}
1864-
write_str(
1852+
write!(
18651853
w,
1866-
format_args!(
1867-
"<h4 class=\"code-header\">{}</h4></section>",
1868-
assoc_type(
1869-
item,
1870-
generics,
1871-
bounds,
1872-
None,
1873-
link.anchor(if trait_.is_some() { &source_id } else { &id }),
1874-
0,
1875-
cx,
1876-
)
1854+
"<h4 class=\"code-header\">{}</h4></section>",
1855+
assoc_type(
1856+
item,
1857+
generics,
1858+
bounds,
1859+
None,
1860+
link.anchor(if trait_.is_some() { &source_id } else { &id }),
1861+
0,
1862+
cx,
18771863
),
1878-
);
1864+
)?;
18791865
}
18801866
clean::AssocTypeItem(tydef, _bounds) => {
18811867
let source_id = format!("{item_type}.{name}");
18821868
let id = cx.derive_id(&source_id);
1883-
write_str(
1869+
write!(
18841870
w,
1885-
format_args!(
1886-
"<section id=\"{id}\" class=\"{item_type}{in_trait_class}\">\
1871+
"<section id=\"{id}\" class=\"{item_type}{in_trait_class}\">\
18871872
{}",
1888-
render_rightside(cx, item, render_mode)
1889-
),
1890-
);
1873+
render_rightside(cx, item, render_mode),
1874+
)?;
18911875
if trait_.is_some() {
18921876
// Anchors are only used on trait impls.
1893-
write_str(w, format_args!("<a href=\"#{id}\" class=\"anchor\">§</a>"));
1877+
write!(w, "<a href=\"#{id}\" class=\"anchor\">§</a>")?;
18941878
}
1895-
write_str(
1879+
write!(
18961880
w,
1897-
format_args!(
1898-
"<h4 class=\"code-header\">{}</h4></section>",
1899-
assoc_type(
1900-
item,
1901-
&tydef.generics,
1902-
&[], // intentionally leaving out bounds
1903-
Some(tydef.item_type.as_ref().unwrap_or(&tydef.type_)),
1904-
link.anchor(if trait_.is_some() { &source_id } else { &id }),
1905-
0,
1906-
cx,
1907-
)
1881+
"<h4 class=\"code-header\">{}</h4></section>",
1882+
assoc_type(
1883+
item,
1884+
&tydef.generics,
1885+
&[], // intentionally leaving out bounds
1886+
Some(tydef.item_type.as_ref().unwrap_or(&tydef.type_)),
1887+
link.anchor(if trait_.is_some() { &source_id } else { &id }),
1888+
0,
1889+
cx,
19081890
),
1909-
);
1891+
)?;
19101892
}
1911-
clean::StrippedItem(..) => return,
1893+
clean::StrippedItem(..) => return Ok(()),
19121894
_ => panic!("can't make docs for trait item with name {:?}", item.name),
19131895
}
19141896

1915-
w.push_str(&info_buffer);
1897+
w.write_str(&info_buffer)?;
19161898
if toggled {
1917-
w.push_str("</summary>");
1918-
w.push_str(&doc_buffer);
1919-
w.push_str("</details>");
1899+
write!(w, "</summary>{doc_buffer}</details>")?;
19201900
}
1901+
Ok(())
19211902
}
19221903

19231904
let mut impl_items = String::new();
@@ -1960,7 +1941,7 @@ fn render_impl(
19601941
false,
19611942
trait_,
19621943
rendering_params,
1963-
);
1944+
)?;
19641945
}
19651946
_ => {}
19661947
}
@@ -1978,7 +1959,7 @@ fn render_impl(
19781959
false,
19791960
trait_,
19801961
rendering_params,
1981-
);
1962+
)?;
19821963
}
19831964
for method in methods {
19841965
doc_impl_item(
@@ -1992,20 +1973,20 @@ fn render_impl(
19921973
false,
19931974
trait_,
19941975
rendering_params,
1995-
);
1976+
)?;
19961977
}
19971978
}
19981979

19991980
fn render_default_items(
2000-
boring: &mut String,
2001-
interesting: &mut String,
1981+
mut boring: impl fmt::Write,
1982+
mut interesting: impl fmt::Write,
20021983
cx: &Context<'_>,
20031984
t: &clean::Trait,
20041985
i: &clean::Impl,
20051986
parent: &clean::Item,
20061987
render_mode: RenderMode,
20071988
rendering_params: ImplRenderingParameters,
2008-
) {
1989+
) -> fmt::Result {
20091990
for trait_item in &t.items {
20101991
// Skip over any default trait items that are impossible to reference
20111992
// (e.g. if it has a `Self: Sized` bound on an unsized type).
@@ -2025,8 +2006,8 @@ fn render_impl(
20252006
let assoc_link = AssocItemLink::GotoSource(did.into(), &provided_methods);
20262007

20272008
doc_impl_item(
2028-
boring,
2029-
interesting,
2009+
&mut boring,
2010+
&mut interesting,
20302011
cx,
20312012
trait_item,
20322013
parent,
@@ -2035,8 +2016,9 @@ fn render_impl(
20352016
true,
20362017
Some(t),
20372018
rendering_params,
2038-
);
2019+
)?;
20392020
}
2021+
Ok(())
20402022
}
20412023

20422024
// If we've implemented a trait, then also emit documentation for all
@@ -2056,7 +2038,7 @@ fn render_impl(
20562038
&i.impl_item,
20572039
render_mode,
20582040
rendering_params,
2059-
);
2041+
)?;
20602042
}
20612043
}
20622044
if render_mode == RenderMode::Normal {

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