https://hg.dopieralski.pl/cpython-lru_cache-weakref/ en-us Objects/stringlib/unicode_format.h revision history https://hg.dopieralski.pl/cpython-lru_cache-weakref/log/e27684eed3b6/Objects/stringlib/unicode_format.h Benjamin Peterson <benjamin@python.org> Tue, 26 Nov 2013 19:24:01 -0600 https://hg.dopieralski.pl/cpython-lru_cache-weakref/log/f914130c15bb/Objects/stringlib/unicode_format.h Benjamin Peterson <benjamin@python.org> Fri, 17 May 2013 18:22:31 -0500 https://hg.dopieralski.pl/cpython-lru_cache-weakref/log/9f6684820b5f/Objects/stringlib/unicode_format.h Benjamin Peterson <benjamin@python.org> Fri, 17 May 2013 17:35:28 -0500 https://hg.dopieralski.pl/cpython-lru_cache-weakref/log/edf029fc9591/Objects/stringlib/unicode_format.h
* Add also min_char attribute to _PyUnicodeWriter structure (currently unused)
* _PyUnicodeWriter_Init() has no more argument (except the writer itself):
min_length and overallocate must be set explicitly
* In error handlers, only enable overallocation if the replacement string
is longer than 1 character
* CJK decoders don't use overallocation anymore
* Set min_length, instead of preallocating memory using
_PyUnicodeWriter_Prepare(), in many decoders
* _PyUnicode_DecodeUnicodeInternal() checks for integer overflow]]> Victor Stinner <victor.stinner@gmail.com> Wed, 17 Apr 2013 23:02:17 +0200 https://hg.dopieralski.pl/cpython-lru_cache-weakref/log/b5d5f422299f/Objects/stringlib/unicode_format.h
Write a function to enable more optimizations:

* If the substring is the whole string and overallocation is disabled, just
keep a reference to the string, don't copy characters
* Avoid a call to the expensive _PyUnicode_FindMaxChar() function when
possible]]> Victor Stinner <victor.stinner@gmail.com> Wed, 03 Apr 2013 01:48:39 +0200 https://hg.dopieralski.pl/cpython-lru_cache-weakref/log/bab7dc2ffc16/Objects/stringlib/unicode_format.h Benjamin Peterson <benjamin@python.org> Tue, 26 Nov 2013 19:22:36 -0600 https://hg.dopieralski.pl/cpython-lru_cache-weakref/log/6786e681ed58/Objects/stringlib/unicode_format.h Benjamin Peterson <benjamin@python.org> Fri, 17 May 2013 17:34:30 -0500 https://hg.dopieralski.pl/cpython-lru_cache-weakref/log/629af342b189/Objects/stringlib/unicode_format.h Serhiy Storchaka <storchaka@gmail.com> Sat, 23 Feb 2013 14:48:16 +0200 https://hg.dopieralski.pl/cpython-lru_cache-weakref/log/09736ae1c314/Objects/stringlib/unicode_format.h Victor Stinner <victor.stinner@gmail.com> Mon, 04 Jun 2012 22:52:12 +0200 https://hg.dopieralski.pl/cpython-lru_cache-weakref/log/22b56b0b8619/Objects/stringlib/unicode_format.h
* Formatting string, int, float and complex use the _PyUnicodeWriter API. It
avoids a temporary buffer in most cases.
* Add _PyUnicodeWriter_WriteStr() to restore the PyAccu optimization: just
keep a reference to the string if the output is only composed of one string
* Disable overallocation when formatting the last argument of str%args and
str.format(args)
* Overallocation allocates at least 100 characters: add min_length attribute
to the _PyUnicodeWriter structure
* Add new private functions: _PyUnicode_FastCopyCharacters(),
_PyUnicode_FastFill() and _PyUnicode_FromASCII()

The speed up is around 20% in average.]]> Victor Stinner <victor.stinner@gmail.com> Tue, 29 May 2012 12:57:52 +0200 https://hg.dopieralski.pl/cpython-lru_cache-weakref/log/0d9067cde462/Objects/stringlib/unicode_format.h Victor Stinner <victor.stinner@gmail.com> Wed, 09 May 2012 22:25:00 +0200 https://hg.dopieralski.pl/cpython-lru_cache-weakref/log/6c8a117f8966/Objects/stringlib/unicode_format.h
Optimize also PyUnicode_Format(): call unicode_writer_prepare() only once
per argument.]]> Victor Stinner <victor.stinner@gmail.com> Wed, 09 May 2012 22:24:08 +0200 https://hg.dopieralski.pl/cpython-lru_cache-weakref/log/7be716a47e9d/Objects/stringlib/unicode_format.h PyAccu API. For example, it makes str.format() from 25% to 30% faster on Linux.]]> Victor Stinner <victor.stinner@gmail.com> Mon, 07 May 2012 12:47:02 +0200 https://hg.dopieralski.pl/cpython-lru_cache-weakref/log/5fe7d19ec49a/Objects/stringlib/unicode_format.h Antoine Pitrou <solipsis@pitrou.net> Thu, 22 Mar 2012 14:42:18 +0100 https://hg.dopieralski.pl/cpython-lru_cache-weakref/log/d855329d0f72/Objects/stringlib/unicode_format.h
Create an empty string with the new Unicode API.]]> Victor Stinner <victor.stinner@haypocalc.com> Thu, 01 Dec 2011 03:18:59 +0100 https://hg.dopieralski.pl/cpython-lru_cache-weakref/log/783b4b9dfa5e/Objects/stringlib/unicode_format.h
* _PyUnicode_CheckConsistency() now takes a PyObject* instead of void*
* Remove now useless casts to PyObject*]]> Victor Stinner <victor.stinner@haypocalc.com> Fri, 04 Nov 2011 00:22:48 +0100 https://hg.dopieralski.pl/cpython-lru_cache-weakref/log/d49be9b017a2/Objects/stringlib/unicode_format.h
Example:
./python -m timeit -s "f='{}' + '-' * 1024 + '{}'; s='abcd' * 16384" "f.format(s, s)"

-> before: 547 usec per loop
-> after: 13 usec per loop
-> 3.2: 22.5 usec per loop
-> 2.7: 12.6 usec per loop]]> Antoine Pitrou <solipsis@pitrou.net> Fri, 07 Oct 2011 02:26:47 +0200 https://hg.dopieralski.pl/cpython-lru_cache-weakref/log/1a0715386d27/Objects/stringlib/unicode_format.h Antoine Pitrou <solipsis@pitrou.net> Thu, 06 Oct 2011 15:34:41 +0200 https://hg.dopieralski.pl/cpython-lru_cache-weakref/log/8beaa9a37387/Objects/stringlib/unicode_format.h Martin v. Löwis <martin@v.loewis.de> Wed, 28 Sep 2011 07:41:54 +0200