From 73f53b57d18ae3bed924e497244791b953f55c6f Mon Sep 17 00:00:00 2001 From: Victor Stinner Date: Sun, 18 Dec 2011 03:26:31 +0100 Subject: Optimize str * n for len(str)==1 and UCS-2 or UCS-4 --- Objects/unicodeobject.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c index ab0d9fa..c5d361b 100644 --- a/Objects/unicodeobject.c +++ b/Objects/unicodeobject.c @@ -12028,12 +12028,19 @@ unicode_repeat(PyObject *str, Py_ssize_t len) if (PyUnicode_GET_LENGTH(str) == 1) { const int kind = PyUnicode_KIND(str); const Py_UCS4 fill_char = PyUnicode_READ(kind, PyUnicode_DATA(str), 0); - void *to = PyUnicode_DATA(u); - if (kind == PyUnicode_1BYTE_KIND) + if (kind == PyUnicode_1BYTE_KIND) { + void *to = PyUnicode_DATA(u); memset(to, (unsigned char)fill_char, len); - else { + } + else if (kind == PyUnicode_2BYTE_KIND) { + Py_UCS2 *ucs2 = PyUnicode_2BYTE_DATA(u); + for (n = 0; n < len; ++n) + ucs2[n] = fill_char; + } else { + Py_UCS4 *ucs4 = PyUnicode_4BYTE_DATA(u); + assert(kind == PyUnicode_4BYTE_KIND); for (n = 0; n < len; ++n) - PyUnicode_WRITE(kind, to, n, fill_char); + ucs4[n] = fill_char; } } else { -- cgit v0.12