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My latest terminfo work introduced a bug in the handling of %i, which was noticed by @huonw after the PR was already merged in.
r? @thestinger
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Moves all the remaining functions that could reasonably be methods to be methods, except for some FFI ones (which I believe @erickt is working on, possibly) and `each_split_within`, since I'm not really sure the details of it (I believe @kimundi wrote the current implementation, so maybe he could convert it to an external iterator method on `StrSlice`, e.g. `word_wrap_iter(&self) -> WordWrapIterator<'self>`, where `WordWrapIterator` impls `Iterator<&'self str>`. It probably won't be too hard, since it's already a state machine.)
This also cleans up the comparison impls for the string types, except I'm not sure how the lang items `eq_str` and `eq_str_uniq` need to be handled, so they (`eq_slice` and `eq`) remain stand-alone functions.
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This moves them all into the traits submodule, and delegates Ord
to the TotalOrd instance. It also deletes the stand-alone lt, gt,
ge and le functions.
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r? @brson
links to issues: #7065 the race that's fixed; #7066 the perf improvement I added. There are also some minor cleanup commits here.
To measure the performance improvement from replacing the exclusive with an atomic uint, I edited the ```msgsend-ring-rw-arcs``` bench test to do a ```write_downgrade``` instead of just a ```write```, so that it stressed the code paths that accessed ```read_count```. (At first I was still using ```write``` and saw no performance difference whatsoever, whoooops.)
The bench test measures how long it takes to send 1,000,000 messages by using rwarcs to emulate pipes. I also measured the performance difference imposed by the fix to the ```access_lock``` race (which involves taking an extra semaphore in the ```cond.wait()``` path). The net result is that fixing the race imposes a 4% to 5% slowdown, but doing the atomic uint optimization gives a 6% to 8% speedup.
Note that this speedup will be most visible in read- or downgrade-heavy workloads. If an RWARC's only users are writers, the optimization doesn't matter. All the same, I think this more than justifies the extra complexity I mentioned in #7066.
The raw numbers are:
```
with xadd read count
before write_cond fix
4.18 to 4.26 us/message
with write_cond fix
4.35 to 4.39 us/message
with exclusive read count
before write_cond fix
4.41 to 4.47 us/message
with write_cond fix
4.65 to 4.76 us/message
```
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Implement conditional support in terminfo, along with a few other related operators.
Fix implementation of non-commutative arithmetic operators.
Remove all known cases of task failure from `terminfo::parm::expand`, and change the method signature.
Fix some other miscellaneous issues.
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replaced with mutable implementations of Iterator
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Implement the %?, %t, %e, and %; operators. Also implement the %<, %=,
%> operators, without which conditionals aren't very useful.
Fix the order of parameters for the arithmetic operators.
Implement the missing %^ operator.
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Replace all potentially-failing operations with Err returns and add
tests.
Remove the Char parameter type; characters are represented as Numbers.
Fix integer constants to work properly when there are multiple constants
in the same capability string.
Tweak loop to use iterators instead of indexing into cap.
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Take a new struct Variables instead of two &mut [] vectors for static
and dynamic variables.
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This fixes the strange random crashes in compile-fail tests.
This reverts commit 96cd61ad034cc9e88ab6a7845c3480dbc1ea62f3.
Conflicts:
src/librustc/driver/driver.rs
src/libstd/str.rs
src/libsyntax/ext/quote.rs
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for performance. Close #7066.
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#7065.
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The confusing mixture of byte index and character count meant that every
use of .substr was incorrect; replaced by slice_chars which only uses
character indices. The old behaviour of `.substr(start, n)` can be emulated
via `.slice_from(start).slice_chars(0, n)`.
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.as_bytes_with_null[_consume]().
The first acts on &str and is not nul-terminated, the last two act on strings
that are always null terminated (&'static str, ~str and @str).
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This was a lot more painful than just changing `x.each` to `x.iter().advance` . I ran into my old friend #5898 and had to add underscores to some method names as a temporary workaround.
The borrow checker also had other ideas because rvalues aren't handled very well yet so temporary variables had to be added. However, storing the temporary in a variable led to dynamic `@mut` failures, so those had to be wrapped in blocks except where the scope ends immediately.
Anyway, the ugliness will be fixed as the compiler issues are fixed and this change will amount to `for x.each |x|` becoming `for x.iter |x|` and making all the iterator adaptors available.
I dropped the run-pass tests for `old_iter` because there's not much point in fixing a module that's on the way out in the next week or so.
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The documentation was still refering to getopts as though it was in the
std module - I've changed this to refer to extra instead.
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r? anybody
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Also, convert complex to use Clone, rather than Copy.
Fixes #5734 and #5735.
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OS X's terminfo uses the hex representation of the first character of
the terminal name as the directory name.
Ubuntu seems to use /lib/terminfo instead of /usr/share/terminfo, at
least on the one machine I have access to.
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