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143 Commits

Author SHA1 Message Date
Victor Stinner
d3f0882dfb Issue #14744: Use the new _PyUnicodeWriter internal API to speed up str%args and str.format(args) 
* 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.
 2012-05-29 12:57:52 +02:00
Antoine Pitrou
63065d761e Issue #14624: UTF-16 decoding is now 3x to 4x faster on various inputs. 
Patch by Serhiy Storchaka.
 2012-05-15 23:48:04 +02:00
Antoine Pitrou
ca5f91b888 Issue #14738: Speed-up UTF-8 decoding on non-ASCII data. Patch by Serhiy Storchaka. 2012-05-10 16:36:02 +02:00
Victor Stinner
3b1a74a9c3 Rename unicode_write_t structure and its methods to "_PyUnicodeWriter" 2012-05-09 22:25:00 +02:00
Victor Stinner
ee4544c920 Issue #14744: Inline unicode_writer_write_char() and unicode_write_str() 
Optimize also PyUnicode_Format(): call unicode_writer_prepare() only once
per argument.
 2012-05-09 22:24:08 +02:00
Victor Stinner
202fdca133 Close #14716: str.format() now uses the new "unicode writer" API instead of the 
PyAccu API. For example, it makes str.format() from 25% to 30% faster on Linux.
 2012-05-07 12:47:02 +02:00
Antoine Pitrou
d0acb411ef Issue #14387: Do not include accu.h from Python.h. 2012-03-22 14:42:18 +01:00
Victor Stinner
41a863cb81 Issue #13706: Fix format(int, "n") for locale with non-ASCII thousands separator 
* Decode thousands separator and decimal point using PyUnicode_DecodeLocale()
   (from the locale encoding), instead of decoding them implicitly from latin1
 * Remove _PyUnicode_InsertThousandsGroupingLocale(), it was not used
 * Change _PyUnicode_InsertThousandsGrouping() API to return the maximum
   character if unicode is NULL
 * Replace MIN/MAX macros by Py_MIN/Py_MAX
 * stringlib/undef.h undefines STRINGLIB_IS_UNICODE
 * stringlib/localeutil.h only supports Unicode
 2012-02-24 00:37:51 +01:00
Benjamin Peterson
21e0da228d remove some usage of Py_UNICODE_TOUPPER/LOWER 2012-01-11 21:00:42 -05:00
Victor Stinner
6099a03202 Issue #13624: Write a specialized UTF-8 encoder to allow more optimization 
The main bottleneck was the PyUnicode_READ() macro.
 2011-12-18 14:22:26 +01:00
Victor Stinner
f8eac00779 Issue #13623: Fix a performance regression introduced by issue #12170 in 
bytes.find() and handle correctly OverflowError (raise the same ValueError than
the error for -1).
 2011-12-18 01:17:41 +01:00
Victor Stinner
b37b17423b Replace PyUnicode_FromUnicode(NULL, 0) by PyUnicode_New(0, 0) 
Create an empty string with the new Unicode API.
 2011-12-01 03:18:59 +01:00
Antoine Pitrou
0a3229de6b Issue #13417: speed up utf-8 decoding by around 2x for the non-fully-ASCII case. 
This almost catches up with pre-PEP 393 performance, when decoding needed
only one pass.
 2011-11-21 20:39:13 +01:00
Victor Stinner
0fc35196bb stringlib: remove unused STRINGLIB_FILL 2011-11-20 19:30:15 +01:00
Victor Stinner
7931d9a951 Replace PyUnicodeObject type by PyObject 
* _PyUnicode_CheckConsistency() now takes a PyObject* instead of void*
 * Remove now useless casts to PyObject*
 2011-11-04 00:22:48 +01:00
Victor Stinner
9db1a8b69f Replace PyUnicodeObject* by PyObject* where it was irrevelant 
A Unicode string can now be a PyASCIIObject, PyCompactUnicodeObject or
PyUnicodeObject. Aliasing a PyASCIIObject* or PyCompactUnicodeObject* to
PyUnicodeObject* is wrong
 2011-10-23 20:04:37 +02:00
Antoine Pitrou
ac65d96777 Issue #12170: The count(), find(), rfind(), index() and rindex() methods 
of bytes and bytearray objects now accept an integer between 0 and 255
as their first argument.  Patch by Petri Lehtinen.
 2011-10-20 23:54:17 +02:00
Antoine Pitrou
5b9f4c1539 Fix typo 2011-10-17 19:21:04 +02:00
Antoine Pitrou
c198d0599b Add a comment explaining this heuristic. 2011-10-13 18:07:37 +02:00
Antoine Pitrou
dda339e6d2 Simplify heuristic for when to use memchr 2011-10-13 17:58:11 +02:00
Antoine Pitrou
dd4e2f0153 Issue #13155: Optimize finding the optimal character width of an unicode string 2011-10-13 00:02:27 +02:00
Victor Stinner
d218bf14cc stringlib: Fix STRINGLIB_STR for UCS2/UCS4 2011-10-12 00:14:32 +02:00
Victor Stinner
8cc70dcf70 Fix fastsearch for UCS2 and UCS4 
* If needle is 0, try (p[0] >> 16) & 0xff for UCS4
 * Disable fastsearch_memchr_1char() if needle is zero for UCS2 and UCS4
 2011-10-11 23:22:22 +02:00
Antoine Pitrou
2c3b2302ad Issue #13134: optimize finding single-character strings using memchr 2011-10-11 20:29:21 +02:00
Martin v. Löwis
c47adb04b3 Change PyUnicode_KIND to 1,2,4. Drop _KIND_SIZE and _CHARACTER_SIZE. 2011-10-07 20:55:35 +02:00