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std: Modernize the local_data api

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This commit brings the local_data api up to modern rust standards with a few key
improvements:

* The `pop` and `set` methods have been combined into one method, `replace`

* The `get_mut` method has been removed. All interior mutability should be done
  through `RefCell`.

* All functionality is now exposed as a method on the keys themselves. Instead
  of importing std::local_data, you now use "key.replace()" and "key.get()".

* All closures have been removed in favor of RAII functionality. This means that
  get() and get_mut() no long require closures, but rather return
  Option<SmartPointer> where the smart pointer takes care of relinquishing the
  borrow and also implements the necessary Deref traits

* The modify() function was removed to cut the local_data interface down to its
  bare essentials (similarly to how RefCell removed set/get).

[breaking-change]
This commit is contained in:
Alex Crichton 2014-04-28 20:36:08 -07:00
parent ef6daf9935
commit ab92ea526d
23 changed files with 444 additions and 661 deletions
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127
src/librustdoc/html/format.rs
View file

@ -17,7 +17,6 @@
use std::fmt;
use std::io;
use std::local_data;
use std::strbuf::StrBuf;
use syntax::ast;
@ -206,78 +205,72 @@ fn path(w: &mut io::Writer, path: &clean::Path, print_all: bool,
generics.push_str("&gt;");
}
// Did someone say rightward-drift?
local_data::get(current_location_key, |loc| {
let loc = loc.unwrap();
let loc = current_location_key.get().unwrap();
let cache = cache_key.get().unwrap();
let abs_root = root(&**cache, loc.as_slice());
let rel_root = match path.segments.get(0).name.as_slice() {
"self" => Some("./".to_owned()),
_ => None,
};
local_data::get(cache_key, |cache| {
let cache = cache.unwrap();
let abs_root = root(&**cache, loc.as_slice());
let rel_root = match path.segments.get(0).name.as_slice() {
"self" => Some("./".to_owned()),
_ => None,
};
if print_all {
let amt = path.segments.len() - 1;
match rel_root {
Some(root) => {
let mut root = StrBuf::from_str(root);
for seg in path.segments.slice_to(amt).iter() {
if "super" == seg.name || "self" == seg.name {
try!(write!(w, "{}::", seg.name));
} else {
root.push_str(seg.name);
root.push_str("/");
try!(write!(w, "<a class='mod'
href='{}index.html'>{}</a>::",
root.as_slice(),
seg.name));
}
}
}
None => {
for seg in path.segments.slice_to(amt).iter() {
try!(write!(w, "{}::", seg.name));
}
if print_all {
let amt = path.segments.len() - 1;
match rel_root {
Some(root) => {
let mut root = StrBuf::from_str(root);
for seg in path.segments.slice_to(amt).iter() {
if "super" == seg.name || "self" == seg.name {
try!(write!(w, "{}::", seg.name));
} else {
root.push_str(seg.name);
root.push_str("/");
try!(write!(w, "<a class='mod'
href='{}index.html'>{}</a>::",
root.as_slice(),
seg.name));
}
}
}
match info(&**cache) {
// This is a documented path, link to it!
Some((ref fqp, shortty)) if abs_root.is_some() => {
let mut url = StrBuf::from_str(abs_root.unwrap());
let to_link = fqp.slice_to(fqp.len() - 1);
for component in to_link.iter() {
url.push_str(*component);
url.push_str("/");
}
match shortty {
item_type::Module => {
url.push_str(*fqp.last().unwrap());
url.push_str("/index.html");
}
_ => {
url.push_str(shortty.to_static_str());
url.push_str(".");
url.push_str(*fqp.last().unwrap());
url.push_str(".html");
}
}
try!(write!(w, "<a class='{}' href='{}' title='{}'>{}</a>",
shortty, url, fqp.connect("::"), last.name));
None => {
for seg in path.segments.slice_to(amt).iter() {
try!(write!(w, "{}::", seg.name));
}
}
}
}
match info(&**cache) {
// This is a documented path, link to it!
Some((ref fqp, shortty)) if abs_root.is_some() => {
let mut url = StrBuf::from_str(abs_root.unwrap());
let to_link = fqp.slice_to(fqp.len() - 1);
for component in to_link.iter() {
url.push_str(*component);
url.push_str("/");
}
match shortty {
item_type::Module => {
url.push_str(*fqp.last().unwrap());
url.push_str("/index.html");
}
_ => {
try!(write!(w, "{}", last.name));
url.push_str(shortty.to_static_str());
url.push_str(".");
url.push_str(*fqp.last().unwrap());
url.push_str(".html");
}
}
try!(write!(w, "{}", generics.as_slice()));
Ok(())
})
})
try!(write!(w, "<a class='{}' href='{}' title='{}'>{}</a>",
shortty, url, fqp.connect("::"), last.name));
}
_ => {
try!(write!(w, "{}", last.name));
}
}
try!(write!(w, "{}", generics.as_slice()));
Ok(())
}
/// Helper to render type parameters
@ -302,10 +295,8 @@ impl fmt::Show for clean::Type {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
clean::TyParamBinder(id) | clean::Generic(id) => {
local_data::get(cache_key, |cache| {
let m = cache.unwrap();
f.buf.write(m.typarams.get(&id).as_bytes())
})
let m = cache_key.get().unwrap();
f.buf.write(m.typarams.get(&id).as_bytes())
}
clean::ResolvedPath{id, typarams: ref tp, path: ref path} => {
try!(resolved_path(f.buf, id, path, false));