[Python-checkins] CVS: python/dist/src/Objects stringobject.c,2.130,2.131
Tim Peters
tim_one@users.sourceforge.net
Tue, 11 Sep 2001 19:18:32 -0700
Update of /cvsroot/python/python/dist/src/Objects
In directory usw-pr-cvs1:/tmp/cvs-serv24631/python/Objects
Modified Files:
stringobject.c
Log Message:
More bug 460020: lots of string optimizations inhibited for string
subclasses, all "the usual" ones (slicing etc), plus replace, translate,
ljust, rjust, center and strip. I don't know how to be sure they've all
been caught.
Question: Should we complain if someone tries to intern an instance of
a string subclass? I hate to slow any code on those paths.
Index: stringobject.c
===================================================================
RCS file: /cvsroot/python/python/dist/src/Objects/stringobject.c,v
retrieving revision 2.130
retrieving revision 2.131
diff -C2 -d -r2.130 -r2.131
*** stringobject.c 2001/09/11 01:41:59 2.130
--- stringobject.c 2001/09/12 02:18:30 2.131
***************
*** 674,682 ****
#define b ((PyStringObject *)bb)
/* Optimize cases with empty left or right operand */
! if (a->ob_size == 0) {
! Py_INCREF(bb);
! return bb;
! }
! if (b->ob_size == 0) {
Py_INCREF(a);
return (PyObject *)a;
--- 674,683 ----
#define b ((PyStringObject *)bb)
/* Optimize cases with empty left or right operand */
! if ((a->ob_size == 0 || b->ob_size == 0) &&
! PyString_CheckExact(a) && PyString_CheckExact(b)) {
! if (a->ob_size == 0) {
! Py_INCREF(bb);
! return bb;
! }
Py_INCREF(a);
return (PyObject *)a;
***************
*** 720,724 ****
return NULL;
}
! if (size == a->ob_size) {
Py_INCREF(a);
return (PyObject *)a;
--- 721,725 ----
return NULL;
}
! if (size == a->ob_size && PyString_CheckExact(a)) {
Py_INCREF(a);
return (PyObject *)a;
***************
*** 760,764 ****
if (j > a->ob_size)
j = a->ob_size;
! if (i == 0 && j == a->ob_size) { /* It's the same as a */
Py_INCREF(a);
return (PyObject *)a;
--- 761,766 ----
if (j > a->ob_size)
j = a->ob_size;
! if (i == 0 && j == a->ob_size && PyString_CheckExact(a)) {
! /* It's the same as a */
Py_INCREF(a);
return (PyObject *)a;
***************
*** 1379,1383 ****
}
! if (i == 0 && j == len) {
Py_INCREF(self);
return (PyObject*)self;
--- 1381,1385 ----
}
! if (i == 0 && j == len && PyString_CheckExact(self)) {
Py_INCREF(self);
return (PyObject*)self;
***************
*** 1736,1740 ****
changed = 1;
}
! if (changed)
return result;
Py_DECREF(result);
--- 1738,1742 ----
changed = 1;
}
! if (changed || !PyString_CheckExact(input_obj))
return result;
Py_DECREF(result);
***************
*** 1756,1760 ****
changed = 1;
}
! if (!changed) {
Py_DECREF(result);
Py_INCREF(input_obj);
--- 1758,1762 ----
changed = 1;
}
! if (!changed && PyString_CheckExact(input_obj)) {
Py_DECREF(result);
Py_INCREF(input_obj);
***************
*** 1918,1922 ****
const char *str = PyString_AS_STRING(self), *sub, *repl;
char *new_s;
! int len = PyString_GET_SIZE(self), sub_len, repl_len, out_len;
int count = -1;
PyObject *new;
--- 1920,1925 ----
const char *str = PyString_AS_STRING(self), *sub, *repl;
char *new_s;
! const int len = PyString_GET_SIZE(self);
! int sub_len, repl_len, out_len;
int count = -1;
PyObject *new;
***************
*** 1961,1967 ****
}
if (out_len == -1) {
! /* we're returning another reference to self */
! new = (PyObject*)self;
! Py_INCREF(new);
}
else {
--- 1964,1977 ----
}
if (out_len == -1) {
! if (PyString_CheckExact(self)) {
! /* we're returning another reference to self */
! new = (PyObject*)self;
! Py_INCREF(new);
! }
! else {
! new = PyString_FromStringAndSize(str, len);
! if (new == NULL)
! return NULL;
! }
}
else {
***************
*** 2183,2191 ****
}
! static
! PyObject *pad(PyStringObject *self,
! int left,
! int right,
! char fill)
{
PyObject *u;
--- 2193,2198 ----
}
! static PyObject *
! pad(PyStringObject *self, int left, int right, char fill)
{
PyObject *u;
***************
*** 2196,2200 ****
right = 0;
! if (left == 0 && right == 0) {
Py_INCREF(self);
return (PyObject *)self;
--- 2203,2207 ----
right = 0;
! if (left == 0 && right == 0 && PyString_CheckExact(self)) {
Py_INCREF(self);
return (PyObject *)self;
***************
*** 2218,2225 ****
static char ljust__doc__[] =
! "S.ljust(width) -> string\n\
! \n\
! Return S left justified in a string of length width. Padding is\n\
! done using spaces.";
static PyObject *
--- 2225,2232 ----
static char ljust__doc__[] =
! "S.ljust(width) -> string\n"
! "\n"
! "Return S left justified in a string of length width. Padding is\n"
! "done using spaces.";
static PyObject *
***************
*** 2230,2234 ****
return NULL;
! if (PyString_GET_SIZE(self) >= width) {
Py_INCREF(self);
return (PyObject*) self;
--- 2237,2241 ----
return NULL;
! if (PyString_GET_SIZE(self) >= width && PyString_CheckExact(self)) {
Py_INCREF(self);
return (PyObject*) self;
***************
*** 2240,2247 ****
static char rjust__doc__[] =
! "S.rjust(width) -> string\n\
! \n\
! Return S right justified in a string of length width. Padding is\n\
! done using spaces.";
static PyObject *
--- 2247,2254 ----
static char rjust__doc__[] =
! "S.rjust(width) -> string\n"
! "\n"
! "Return S right justified in a string of length width. Padding is\n"
! "done using spaces.";
static PyObject *
***************
*** 2252,2256 ****
return NULL;
! if (PyString_GET_SIZE(self) >= width) {
Py_INCREF(self);
return (PyObject*) self;
--- 2259,2263 ----
return NULL;
! if (PyString_GET_SIZE(self) >= width && PyString_CheckExact(self)) {
Py_INCREF(self);
return (PyObject*) self;
***************
*** 2262,2269 ****
static char center__doc__[] =
! "S.center(width) -> string\n\
! \n\
! Return S centered in a string of length width. Padding is done\n\
! using spaces.";
static PyObject *
--- 2269,2276 ----
static char center__doc__[] =
! "S.center(width) -> string\n"
! "\n"
! "Return S centered in a string of length width. Padding is done\n"
! "using spaces.";
static PyObject *
***************
*** 2276,2280 ****
return NULL;
! if (PyString_GET_SIZE(self) >= width) {
Py_INCREF(self);
return (PyObject*) self;
--- 2283,2287 ----
return NULL;
! if (PyString_GET_SIZE(self) >= width && PyString_CheckExact(self)) {
Py_INCREF(self);
return (PyObject*) self;
***************
*** 2287,2335 ****
}
- #if 0
- static char zfill__doc__[] =
- "S.zfill(width) -> string\n\
- \n\
- Pad a numeric string x with zeros on the left, to fill a field\n\
- of the specified width. The string x is never truncated.";
-
- static PyObject *
- string_zfill(PyStringObject *self, PyObject *args)
- {
- int fill;
- PyObject *u;
- char *str;
-
- int width;
- if (!PyArg_ParseTuple(args, "i:zfill", &width))
- return NULL;
-
- if (PyString_GET_SIZE(self) >= width) {
- Py_INCREF(self);
- return (PyObject*) self;
- }
-
- fill = width - PyString_GET_SIZE(self);
-
- u = pad(self, fill, 0, '0');
- if (u == NULL)
- return NULL;
-
- str = PyString_AS_STRING(u);
- if (str[fill] == '+' || str[fill] == '-') {
- /* move sign to beginning of string */
- str[0] = str[fill];
- str[fill] = '0';
- }
-
- return u;
- }
- #endif
-
static char isspace__doc__[] =
! "S.isspace() -> int\n\
! \n\
! Return 1 if there are only whitespace characters in S,\n\
! 0 otherwise.";
static PyObject*
--- 2294,2302 ----
}
static char isspace__doc__[] =
! "S.isspace() -> int\n"
! "\n"
! "Return 1 if there are only whitespace characters in S,\n"
! "0 otherwise.";
static PyObject*