rust-cpython: rename PyLeakedRef to PyLeaked
This series will make PyLeaked* behave more like a Python iterator, which
means mutation of the owner object will be allowed and the leaked reference
(i.e. the iterator) will be invalidated instead.
I'll add PyLeakedRef/PyLeakedRefMut structs which will represent a "borrowed"
state, and prevent the underlying value from being mutably borrowed while the
leaked reference is in use:
let shared = self.inner_shared(py);
let leaked = shared.leak_immutable();
{
let leaked_ref: PyLeakedRef<_> = leaked.borrow(py);
shared.borrow_mut(); // panics since the underlying value is borrowed
}
shared.borrow_mut(); // allowed
The relation between PyLeaked* structs is quite similar to RefCell/Ref/RefMut,
but the implementation can't be reused because the borrowing state will have
to be shared across objects having no lifetime relation.
PyLeaked isn't named as PyLeakedCell since it isn't actually a cell in that
leaked.borrow_mut() will require &mut self.
#require serve
$ cat <<EOF >> $HGRCPATH
> [extensions]
> schemes=
>
> [schemes]
> l = http://localhost:$HGPORT/
> parts = http://{1}:$HGPORT/
> z = file:\$PWD/
> EOF
$ hg init test
$ cd test
$ echo a > a
$ hg ci -Am initial
adding a
invalid scheme
$ hg log -R z:z
abort: no '://' in scheme url 'z:z'
[255]
http scheme
$ hg serve -n test -p $HGPORT -d --pid-file=hg.pid -A access.log -E errors.log
$ cat hg.pid >> $DAEMON_PIDS
$ hg incoming l://
comparing with l://
searching for changes
no changes found
[1]
check that {1} syntax works
$ hg incoming --debug parts://localhost
using http://localhost:$HGPORT/
sending capabilities command
comparing with parts://localhost/
query 1; heads
sending batch command
searching for changes
all remote heads known locally
no changes found
(sent 2 HTTP requests and * bytes; received * bytes in responses) (glob)
[1]
check that paths are expanded
$ PWD=`pwd` hg incoming z://
comparing with z://
searching for changes
no changes found
[1]
check that debugexpandscheme outputs the canonical form
$ hg debugexpandscheme bb://user/repo
https://bitbucket.org/user/repo
expanding an unknown scheme emits the input
$ hg debugexpandscheme foobar://this/that
foobar://this/that
expanding a canonical URL emits the input
$ hg debugexpandscheme https://bitbucket.org/user/repo
https://bitbucket.org/user/repo
errors
$ cat errors.log
$ cd ..