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rustdoc: Link directly to associated types

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Rather than just linking to the trait.

Also simplifies the logic used to decide whether to render the full
QPath.
This commit is contained in:
Oliver Middleton 2017-06-11 18:20:48 +01:00
parent 19193d6390
commit 429dc51bfe
2 changed files with 26 additions and 23 deletions
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42
src/librustdoc/html/format.rs
View File

@ -459,22 +459,10 @@ pub fn href(did: DefId) -> Option<(String, ItemType, Vec<String>)> {
/// rendering function with the necessary arguments for linking to a local path.
fn resolved_path(w: &mut fmt::Formatter, did: DefId, path: &clean::Path,
print_all: bool, use_absolute: bool) -> fmt::Result {
let empty = clean::PathSegment {
name: String::new(),
params: clean::PathParameters::Parenthesized {
inputs: Vec::new(),
output: None,
}
};
let last = path.segments.last()
.unwrap_or(&empty);
let rel_root = if path.segments.is_empty() {
None
} else {
match &*path.segments[0].name {
"self" => Some("./".to_string()),
_ => None,
}
let last = path.segments.last().unwrap();
let rel_root = match &*path.segments[0].name {
"self" => Some("./".to_string()),
_ => None,
};
if print_all {
@ -508,7 +496,7 @@ fn resolved_path(w: &mut fmt::Formatter, did: DefId, path: &clean::Path,
Some((_, _, fqp)) => {
format!("{}::{}",
fqp[..fqp.len() - 1].join("::"),
HRef::new(did, fqp.last().unwrap_or(&String::new())))
HRef::new(did, fqp.last().unwrap()))
}
None => format!("{}", HRef::new(did, &last.name)),
}
@ -740,10 +728,8 @@ fn fmt_type(t: &clean::Type, f: &mut fmt::Formatter, use_absolute: bool) -> fmt:
}
clean::QPath { ref name, ref self_type, ref trait_ } => {
let should_show_cast = match *trait_ {
box clean::ResolvedPath { .. } => {
let path = clean::Path::singleton(name.clone());
!path.segments.is_empty() && &format!("{:#}", trait_) != "()" &&
&format!("{:#}", self_type) != "Self"
box clean::ResolvedPath { ref path, .. } => {
!path.segments.is_empty() && !self_type.is_self_type()
}
_ => true,
};
@ -772,8 +758,18 @@ fn fmt_type(t: &clean::Type, f: &mut fmt::Formatter, use_absolute: bool) -> fmt:
// everything comes in as a fully resolved QPath (hard to
// look at).
box clean::ResolvedPath { did, ref typarams, .. } => {
let path = clean::Path::singleton(name.clone());
resolved_path(f, did, &path, true, use_absolute)?;
match href(did) {
Some((ref url, _, ref path)) if !f.alternate() => {
write!(f,
"<a class=\"type\" href=\"{url}#{shortty}.{name}\" \
title=\"type {path}::{name}\">{name}</a>",
url = url,
shortty = ItemType::AssociatedType,
name = name,
path = path.join("::"))?;
}
_ => write!(f, "{}", name)?,
}
// FIXME: `typarams` are not rendered, and this seems bad?
drop(typarams);

7
src/test/rustdoc/assoc-types.rs
View File

@ -8,6 +8,8 @@
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// ignore-tidy-linelength
#![crate_type="lib"]
// @has assoc_types/trait.Index.html
@ -18,11 +20,14 @@ pub trait Index<I: ?Sized> {
// @has - '//*[@id="index.v"]//code' 'fn index'
// @has - '//*[@id="tymethod.index"]//code' \
// "fn index<'a>(&'a self, index: I) -> &'a Self::Output"
// @has - '//*[@id="tymethod.index"]//code//a[@href="../assoc_types/trait.Index.html#associatedtype.Output"]' \
// "Output"
fn index<'a>(&'a self, index: I) -> &'a Self::Output;
}
// @has assoc_types/fn.use_output.html
// @has - '//*[@class="rust fn"]' '-> &T::Output'
// @has - '//*[@class="rust fn"]//a[@href="../assoc_types/trait.Index.html#associatedtype.Output"]' 'Output'
pub fn use_output<T: Index<usize>>(obj: &T, index: usize) -> &T::Output {
obj.index(index)
}
@ -33,10 +38,12 @@ pub trait Feed {
// @has assoc_types/fn.use_input.html
// @has - '//*[@class="rust fn"]' 'T::Input'
// @has - '//*[@class="rust fn"]//a[@href="../assoc_types/trait.Feed.html#associatedtype.Input"]' 'Input'
pub fn use_input<T: Feed>(_feed: &T, _element: T::Input) { }
// @has assoc_types/fn.cmp_input.html
// @has - '//*[@class="rust fn"]' 'where T::Input: PartialEq<U::Input>'
// @has - '//*[@class="rust fn"]//a[@href="../assoc_types/trait.Feed.html#associatedtype.Input"]' 'Input'
pub fn cmp_input<T: Feed, U: Feed>(a: &T::Input, b: &U::Input) -> bool
where T::Input: PartialEq<U::Input>
{