Mercurial > cpython-lru_cache-weakref

annotate Objects/rangeobject.c @ 51330:ca423008fa4a legacy-trunk

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
#5144: document that PySys_SetArgv prepends the script directory (or the empty string) to sys.path.
author Georg Brandl <georg@python.org>
date Thu, 05 Feb 2009 10:37:07 +0000
parents 3939ff89834c
children c217e0331d4b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1369
89e1e5d9ccbf * compile.[ch]: support for lambda()
Guido van Rossum <guido@python.org>
parents:
diff changeset
1 /* Range object implementation */
89e1e5d9ccbf * compile.[ch]: support for lambda()
Guido van Rossum <guido@python.org>
parents:
diff changeset
2
5396
d1447950fa04 Quickly renamed the last directory.
Guido van Rossum <guido@python.org>
parents: 4588
diff changeset
3 #include "Python.h"
18436
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
4
1369
89e1e5d9ccbf * compile.[ch]: support for lambda()
Guido van Rossum <guido@python.org>
parents:
diff changeset
5 typedef struct {
5396
d1447950fa04 Quickly renamed the last directory.
Guido van Rossum <guido@python.org>
parents: 4588
diff changeset
6 PyObject_HEAD
1369
89e1e5d9ccbf * compile.[ch]: support for lambda()
Guido van Rossum <guido@python.org>
parents:
diff changeset
7 long start;
89e1e5d9ccbf * compile.[ch]: support for lambda()
Guido van Rossum <guido@python.org>
parents:
diff changeset
8 long step;
89e1e5d9ccbf * compile.[ch]: support for lambda()
Guido van Rossum <guido@python.org>
parents:
diff changeset
9 long len;
89e1e5d9ccbf * compile.[ch]: support for lambda()
Guido van Rossum <guido@python.org>
parents:
diff changeset
10 } rangeobject;
89e1e5d9ccbf * compile.[ch]: support for lambda()
Guido van Rossum <guido@python.org>
parents:
diff changeset
11
23695
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
12 /* Return number of items in range/xrange (lo, hi, step). step > 0
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
13 * required. Return a value < 0 if & only if the true value is too
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
14 * large to fit in a signed long.
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
15 */
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
16 static long
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
17 get_len_of_range(long lo, long hi, long step)
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
18 {
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
19 /* -------------------------------------------------------------
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
20 If lo >= hi, the range is empty.
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
21 Else if n values are in the range, the last one is
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
22 lo + (n-1)*step, which must be <= hi-1. Rearranging,
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
23 n <= (hi - lo - 1)/step + 1, so taking the floor of the RHS gives
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
24 the proper value. Since lo < hi in this case, hi-lo-1 >= 0, so
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
25 the RHS is non-negative and so truncation is the same as the
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
26 floor. Letting M be the largest positive long, the worst case
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
27 for the RHS numerator is hi=M, lo=-M-1, and then
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
28 hi-lo-1 = M-(-M-1)-1 = 2*M. Therefore unsigned long has enough
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
29 precision to compute the RHS exactly.
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
30 ---------------------------------------------------------------*/
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
31 long n = 0;
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
32 if (lo < hi) {
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
33 unsigned long uhi = (unsigned long)hi;
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
34 unsigned long ulo = (unsigned long)lo;
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
35 unsigned long diff = uhi - ulo - 1;
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
36 n = (long)(diff / (unsigned long)step + 1);
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
37 }
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
38 return n;
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
39 }
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
40
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
41 static PyObject *
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
42 range_new(PyTypeObject *type, PyObject *args, PyObject *kw)
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
43 {
33047
c81ed079576f Bug 1003935: xrange overflows
Tim Peters <tim.peters@gmail.com>
parents: 33046
diff changeset
44 rangeobject *obj;
23695
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
45 long ilow = 0, ihigh = 0, istep = 1;
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
46 long n;
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
47
35449
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them.
Georg Brandl <georg@python.org>
parents: 34087
diff changeset
48 if (!_PyArg_NoKeywords("xrange()", kw))
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them.
Georg Brandl <georg@python.org>
parents: 34087
diff changeset
49 return NULL;
1fdfd0130e28 Disallow keyword arguments for type constructors that don't use them.
Georg Brandl <georg@python.org>
parents: 34087
diff changeset
50
23695
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
51 if (PyTuple_Size(args) <= 1) {
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
52 if (!PyArg_ParseTuple(args,
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
53 "l;xrange() requires 1-3 int arguments",
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
54 &ihigh))
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
55 return NULL;
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
56 }
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
57 else {
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
58 if (!PyArg_ParseTuple(args,
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
59 "ll|l;xrange() requires 1-3 int arguments",
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
60 &ilow, &ihigh, &istep))
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
61 return NULL;
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
62 }
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
63 if (istep == 0) {
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
64 PyErr_SetString(PyExc_ValueError, "xrange() arg 3 must not be zero");
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
65 return NULL;
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
66 }
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
67 if (istep > 0)
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
68 n = get_len_of_range(ilow, ihigh, istep);
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
69 else
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
70 n = get_len_of_range(ihigh, ilow, -istep);
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
71 if (n < 0) {
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
72 PyErr_SetString(PyExc_OverflowError,
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
73 "xrange() result has too many items");
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
74 return NULL;
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
75 }
33047
c81ed079576f Bug 1003935: xrange overflows
Tim Peters <tim.peters@gmail.com>
parents: 33046
diff changeset
76
c81ed079576f Bug 1003935: xrange overflows
Tim Peters <tim.peters@gmail.com>
parents: 33046
diff changeset
77 obj = PyObject_New(rangeobject, &PyRange_Type);
c81ed079576f Bug 1003935: xrange overflows
Tim Peters <tim.peters@gmail.com>
parents: 33046
diff changeset
78 if (obj == NULL)
c81ed079576f Bug 1003935: xrange overflows
Tim Peters <tim.peters@gmail.com>
parents: 33046
diff changeset
79 return NULL;
c81ed079576f Bug 1003935: xrange overflows
Tim Peters <tim.peters@gmail.com>
parents: 33046
diff changeset
80 obj->start = ilow;
c81ed079576f Bug 1003935: xrange overflows
Tim Peters <tim.peters@gmail.com>
parents: 33046
diff changeset
81 obj->len = n;
c81ed079576f Bug 1003935: xrange overflows
Tim Peters <tim.peters@gmail.com>
parents: 33046
diff changeset
82 obj->step = istep;
c81ed079576f Bug 1003935: xrange overflows
Tim Peters <tim.peters@gmail.com>
parents: 33046
diff changeset
83 return (PyObject *) obj;
23695
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
84 }
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
85
23832
ed1ba37a46b7 Patch #568124: Add doc string macros.
Martin v. Löwis <martin@v.loewis.de>
parents: 23702
diff changeset
86 PyDoc_STRVAR(range_doc,
23695
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
87 "xrange([start,] stop[, step]) -> xrange object\n\
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
88 \n\
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
89 Like range(), but instead of returning a list, returns an object that\n\
26592
0c646baeec58 Update comments about the performance of xrange().
Raymond Hettinger <python@rcn.com>
parents: 26097
diff changeset
90 generates the numbers in the range on demand. For looping, this is \n\
0c646baeec58 Update comments about the performance of xrange().
Raymond Hettinger <python@rcn.com>
parents: 26097
diff changeset
91 slightly faster than range() and more memory efficient.");
23695
6266f1bd1ab9 Skip Montanaro's patch, SF 559833, exposing xrange type in builtins.
Raymond Hettinger <python@rcn.com>
parents: 23693
diff changeset
92
5396
d1447950fa04 Quickly renamed the last directory.
Guido van Rossum <guido@python.org>
parents: 4588
diff changeset
93 static PyObject *
36501
7fdc639bc5b4 Merge ssize_t branch.
Martin v. Löwis <martin@v.loewis.de>
parents: 36484
diff changeset
94 range_item(rangeobject *r, Py_ssize_t i)
1369
89e1e5d9ccbf * compile.[ch]: support for lambda()
Guido van Rossum <guido@python.org>
parents:
diff changeset
95 {
23361
aee8f16f2774 Remove old deprecated features from the xrange object.
Fred Drake <fdrake@acm.org>
parents: 23348
diff changeset
96 if (i < 0 || i >= r->len) {
aee8f16f2774 Remove old deprecated features from the xrange object.
Fred Drake <fdrake@acm.org>
parents: 23348
diff changeset
97 PyErr_SetString(PyExc_IndexError,
9828
80150f9c8c41 Use 'xrange', not 'range', in error messages. Reported by Nathan Sullivan.
Guido van Rossum <guido@python.org>
parents: 5396
diff changeset
98 "xrange object index out of range");
23361
aee8f16f2774 Remove old deprecated features from the xrange object.
Fred Drake <fdrake@acm.org>
parents: 23348
diff changeset
99 return NULL;
aee8f16f2774 Remove old deprecated features from the xrange object.
Fred Drake <fdrake@acm.org>
parents: 23348
diff changeset
100 }
45236
1980d7058627 Remove unnecessary modulo division.
Raymond Hettinger <python@rcn.com>
parents: 37602
diff changeset
101 return PyInt_FromSsize_t(r->start + i * r->step);
1369
89e1e5d9ccbf * compile.[ch]: support for lambda()
Guido van Rossum <guido@python.org>
parents:
diff changeset
102 }
89e1e5d9ccbf * compile.[ch]: support for lambda()
Guido van Rossum <guido@python.org>
parents:
diff changeset
103
36501
7fdc639bc5b4 Merge ssize_t branch.
Martin v. Löwis <martin@v.loewis.de>
parents: 36484
diff changeset
104 static Py_ssize_t
13458
7908ec855665 ANSI-fication of the sources.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
105 range_length(rangeobject *r)
1369
89e1e5d9ccbf * compile.[ch]: support for lambda()
Guido van Rossum <guido@python.org>
parents:
diff changeset
106 {
36501
7fdc639bc5b4 Merge ssize_t branch.
Martin v. Löwis <martin@v.loewis.de>
parents: 36484
diff changeset
107 return (Py_ssize_t)(r->len);
1444
f2d04054c934 * rangeobject.[ch], bltinmodule.c: incorporate new version of range
Guido van Rossum <guido@python.org>
parents: 1387
diff changeset
108 }
f2d04054c934 * rangeobject.[ch], bltinmodule.c: incorporate new version of range
Guido van Rossum <guido@python.org>
parents: 1387
diff changeset
109
5396
d1447950fa04 Quickly renamed the last directory.
Guido van Rossum <guido@python.org>
parents: 4588
diff changeset
110 static PyObject *
13458
7908ec855665 ANSI-fication of the sources.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
111 range_repr(rangeobject *r)
1369
89e1e5d9ccbf * compile.[ch]: support for lambda()
Guido van Rossum <guido@python.org>
parents:
diff changeset
112 {
19476
0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing
Barry Warsaw <barry@python.org>
parents: 19301
diff changeset
113 PyObject *rtn;
33046
67d25217bc7f Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 32897
diff changeset
114
13848
dd042f5a8fa2 Boost buffer sizes in the absence of snprintf on Windows.
Tim Peters <tim.peters@gmail.com>
parents: 13847
diff changeset
115 if (r->start == 0 && r->step == 1)
47527
52294af4b663 This reverts r63675 based on the discussion in this thread:
Gregory P. Smith <greg@mad-scientist.com>
parents: 47294
diff changeset
116 rtn = PyString_FromFormat("xrange(%ld)",
19476
0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing
Barry Warsaw <barry@python.org>
parents: 19301
diff changeset
117 r->start + r->len * r->step);
13848
dd042f5a8fa2 Boost buffer sizes in the absence of snprintf on Windows.
Tim Peters <tim.peters@gmail.com>
parents: 13847
diff changeset
118
dd042f5a8fa2 Boost buffer sizes in the absence of snprintf on Windows.
Tim Peters <tim.peters@gmail.com>
parents: 13847
diff changeset
119 else if (r->step == 1)
47527
52294af4b663 This reverts r63675 based on the discussion in this thread:
Gregory P. Smith <greg@mad-scientist.com>
parents: 47294
diff changeset
120 rtn = PyString_FromFormat("xrange(%ld, %ld)",
19476
0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing
Barry Warsaw <barry@python.org>
parents: 19301
diff changeset
121 r->start,
0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing
Barry Warsaw <barry@python.org>
parents: 19301
diff changeset
122 r->start + r->len * r->step);
13848
dd042f5a8fa2 Boost buffer sizes in the absence of snprintf on Windows.
Tim Peters <tim.peters@gmail.com>
parents: 13847
diff changeset
123
dd042f5a8fa2 Boost buffer sizes in the absence of snprintf on Windows.
Tim Peters <tim.peters@gmail.com>
parents: 13847
diff changeset
124 else
47527
52294af4b663 This reverts r63675 based on the discussion in this thread:
Gregory P. Smith <greg@mad-scientist.com>
parents: 47294
diff changeset
125 rtn = PyString_FromFormat("xrange(%ld, %ld, %ld)",
19476
0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing
Barry Warsaw <barry@python.org>
parents: 19301
diff changeset
126 r->start,
0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing
Barry Warsaw <barry@python.org>
parents: 19301
diff changeset
127 r->start + r->len * r->step,
0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing
Barry Warsaw <barry@python.org>
parents: 19301
diff changeset
128 r->step);
0e70df98424e repr's converted to using PyString_FromFormat() instead of sprintf'ing
Barry Warsaw <barry@python.org>
parents: 19301
diff changeset
129 return rtn;
18436
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
130 }
9653272f036f Re-add 'advanced' xrange features, adding DeprecationWarnings as discussed
Thomas Wouters <thomas@python.org>
parents: 18391
diff changeset
131
47534
df9b337ba311 Issue 2582: Fix pickling of xrange objects.
Alexandre Vassalotti <alexandre@peadrop.com>
parents: 47527
diff changeset
132 /* Pickling support */
df9b337ba311 Issue 2582: Fix pickling of xrange objects.
Alexandre Vassalotti <alexandre@peadrop.com>
parents: 47527
diff changeset
133 static PyObject *
47535
3939ff89834c Added better pickling support to xrange objects.
Alexandre Vassalotti <alexandre@peadrop.com>
parents: 47534
diff changeset
134 range_reduce(rangeobject *r, PyObject *args)
47534
df9b337ba311 Issue 2582: Fix pickling of xrange objects.
Alexandre Vassalotti <alexandre@peadrop.com>
parents: 47527
diff changeset
135 {
47535
3939ff89834c Added better pickling support to xrange objects.
Alexandre Vassalotti <alexandre@peadrop.com>
parents: 47534
diff changeset
136 return Py_BuildValue("(O(iii))", Py_TYPE(r),
47534
df9b337ba311 Issue 2582: Fix pickling of xrange objects.
Alexandre Vassalotti <alexandre@peadrop.com>
parents: 47527
diff changeset
137 r->start,
df9b337ba311 Issue 2582: Fix pickling of xrange objects.
Alexandre Vassalotti <alexandre@peadrop.com>
parents: 47527
diff changeset
138 r->start + r->len * r->step,
df9b337ba311 Issue 2582: Fix pickling of xrange objects.
Alexandre Vassalotti <alexandre@peadrop.com>
parents: 47527
diff changeset
139 r->step);
df9b337ba311 Issue 2582: Fix pickling of xrange objects.
Alexandre Vassalotti <alexandre@peadrop.com>
parents: 47527
diff changeset
140 }
df9b337ba311 Issue 2582: Fix pickling of xrange objects.
Alexandre Vassalotti <alexandre@peadrop.com>
parents: 47527
diff changeset
141
5396
d1447950fa04 Quickly renamed the last directory.
Guido van Rossum <guido@python.org>
parents: 4588
diff changeset
142 static PySequenceMethods range_as_sequence = {
36501
7fdc639bc5b4 Merge ssize_t branch.
Martin v. Löwis <martin@v.loewis.de>
parents: 36484
diff changeset
143 (lenfunc)range_length, /* sq_length */
23361
aee8f16f2774 Remove old deprecated features from the xrange object.
Fred Drake <fdrake@acm.org>
parents: 23348
diff changeset
144 0, /* sq_concat */
aee8f16f2774 Remove old deprecated features from the xrange object.
Fred Drake <fdrake@acm.org>
parents: 23348
diff changeset
145 0, /* sq_repeat */
36501
7fdc639bc5b4 Merge ssize_t branch.
Martin v. Löwis <martin@v.loewis.de>
parents: 36484
diff changeset
146 (ssizeargfunc)range_item, /* sq_item */
23361
aee8f16f2774 Remove old deprecated features from the xrange object.
Fred Drake <fdrake@acm.org>
parents: 23348
diff changeset
147 0, /* sq_slice */
1369
89e1e5d9ccbf * compile.[ch]: support for lambda()
Guido van Rossum <guido@python.org>
parents:
diff changeset
148 };
89e1e5d9ccbf * compile.[ch]: support for lambda()
Guido van Rossum <guido@python.org>
parents:
diff changeset
149
24280
1598a1e473e2 staticforward bites the dust.
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 24260
diff changeset
150 static PyObject * range_iter(PyObject *seq);
30865
41c4e143e6e6 Implement and apply PEP 322, reverse iteration
Raymond Hettinger <python@rcn.com>
parents: 28320
diff changeset
151 static PyObject * range_reverse(PyObject *seq);
41c4e143e6e6 Implement and apply PEP 322, reverse iteration
Raymond Hettinger <python@rcn.com>
parents: 28320
diff changeset
152
41c4e143e6e6 Implement and apply PEP 322, reverse iteration
Raymond Hettinger <python@rcn.com>
parents: 28320
diff changeset
153 PyDoc_STRVAR(reverse_doc,
41c4e143e6e6 Implement and apply PEP 322, reverse iteration
Raymond Hettinger <python@rcn.com>
parents: 28320
diff changeset
154 "Returns a reverse iterator.");
41c4e143e6e6 Implement and apply PEP 322, reverse iteration
Raymond Hettinger <python@rcn.com>
parents: 28320
diff changeset
155
41c4e143e6e6 Implement and apply PEP 322, reverse iteration
Raymond Hettinger <python@rcn.com>
parents: 28320
diff changeset
156 static PyMethodDef range_methods[] = {
41c4e143e6e6 Implement and apply PEP 322, reverse iteration
Raymond Hettinger <python@rcn.com>
parents: 28320
diff changeset
157 {"__reversed__", (PyCFunction)range_reverse, METH_NOARGS, reverse_doc},
47535
3939ff89834c Added better pickling support to xrange objects.
Alexandre Vassalotti <alexandre@peadrop.com>
parents: 47534
diff changeset
158 {"__reduce__", (PyCFunction)range_reduce, METH_VARARGS},
30865
41c4e143e6e6 Implement and apply PEP 322, reverse iteration
Raymond Hettinger <python@rcn.com>
parents: 28320
diff changeset
159 {NULL, NULL} /* sentinel */
41c4e143e6e6 Implement and apply PEP 322, reverse iteration
Raymond Hettinger <python@rcn.com>
parents: 28320
diff changeset
160 };
23693
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
161
5396
d1447950fa04 Quickly renamed the last directory.
Guido van Rossum <guido@python.org>
parents: 4588
diff changeset
162 PyTypeObject PyRange_Type = {
d1447950fa04 Quickly renamed the last directory.
Guido van Rossum <guido@python.org>
parents: 4588
diff changeset
163 PyObject_HEAD_INIT(&PyType_Type)
37304
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
164 0, /* Number of items for varobject */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
165 "xrange", /* Name of this type */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
166 sizeof(rangeobject), /* Basic object size */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
167 0, /* Item size for varobject */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
168 (destructor)PyObject_Del, /* tp_dealloc */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
169 0, /* tp_print */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
170 0, /* tp_getattr */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
171 0, /* tp_setattr */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
172 0, /* tp_compare */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
173 (reprfunc)range_repr, /* tp_repr */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
174 0, /* tp_as_number */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
175 &range_as_sequence, /* tp_as_sequence */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
176 0, /* tp_as_mapping */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
177 0, /* tp_hash */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
178 0, /* tp_call */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
179 0, /* tp_str */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
180 PyObject_GenericGetAttr, /* tp_getattro */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
181 0, /* tp_setattro */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
182 0, /* tp_as_buffer */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
183 Py_TPFLAGS_DEFAULT, /* tp_flags */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
184 range_doc, /* tp_doc */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
185 0, /* tp_traverse */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
186 0, /* tp_clear */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
187 0, /* tp_richcompare */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
188 0, /* tp_weaklistoffset */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
189 range_iter, /* tp_iter */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
190 0, /* tp_iternext */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
191 range_methods, /* tp_methods */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
192 0, /* tp_members */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
193 0, /* tp_getset */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
194 0, /* tp_base */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
195 0, /* tp_dict */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
196 0, /* tp_descr_get */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
197 0, /* tp_descr_set */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
198 0, /* tp_dictoffset */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
199 0, /* tp_init */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
200 0, /* tp_alloc */
79a0f080f898 Remove unnecessary casts in type object initializers.
Georg Brandl <georg@python.org>
parents: 36501
diff changeset
201 range_new, /* tp_new */
1369
89e1e5d9ccbf * compile.[ch]: support for lambda()
Guido van Rossum <guido@python.org>
parents:
diff changeset
202 };
23693
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
203
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
204 /*********************** Xrange Iterator **************************/
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
205
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
206 typedef struct {
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
207 PyObject_HEAD
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
208 long index;
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
209 long start;
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
210 long step;
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
211 long len;
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
212 } rangeiterobject;
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
213
30865
41c4e143e6e6 Implement and apply PEP 322, reverse iteration
Raymond Hettinger <python@rcn.com>
parents: 28320
diff changeset
214 static PyObject *
23693
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
215 rangeiter_next(rangeiterobject *r)
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
216 {
33046
67d25217bc7f Trimmed trailing whitespace.
Tim Peters <tim.peters@gmail.com>
parents: 32897
diff changeset
217 if (r->index < r->len)
23693
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
218 return PyInt_FromLong(r->start + (r->index++) * r->step);
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
219 return NULL;
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
220 }
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
221
35636
e22334b1da67 Convert iterator __len__() methods to a private API.
Raymond Hettinger <python@rcn.com>
parents: 35449
diff changeset
222 static PyObject *
31635
04eb2ebb46e2 Tidied up the implementations of reversed (including the custom ones
Raymond Hettinger <python@rcn.com>
parents: 30865
diff changeset
223 rangeiter_len(rangeiterobject *r)
04eb2ebb46e2 Tidied up the implementations of reversed (including the custom ones
Raymond Hettinger <python@rcn.com>
parents: 30865
diff changeset
224 {
35636
e22334b1da67 Convert iterator __len__() methods to a private API.
Raymond Hettinger <python@rcn.com>
parents: 35449
diff changeset
225 return PyInt_FromLong(r->len - r->index);
31635
04eb2ebb46e2 Tidied up the implementations of reversed (including the custom ones
Raymond Hettinger <python@rcn.com>
parents: 30865
diff changeset
226 }
04eb2ebb46e2 Tidied up the implementations of reversed (including the custom ones
Raymond Hettinger <python@rcn.com>
parents: 30865
diff changeset
227
36484
20f75d5e79e9 Renamed _length_cue() to __length_hint__(). See:
Armin Rigo <arigo@tunes.org>
parents: 35636
diff changeset
228 PyDoc_STRVAR(length_hint_doc, "Private method returning an estimate of len(list(it)).");
35636
e22334b1da67 Convert iterator __len__() methods to a private API.
Raymond Hettinger <python@rcn.com>
parents: 35449
diff changeset
229
e22334b1da67 Convert iterator __len__() methods to a private API.
Raymond Hettinger <python@rcn.com>
parents: 35449
diff changeset
230 static PyMethodDef rangeiter_methods[] = {
36484
20f75d5e79e9 Renamed _length_cue() to __length_hint__(). See:
Armin Rigo <arigo@tunes.org>
parents: 35636
diff changeset
231 {"__length_hint__", (PyCFunction)rangeiter_len, METH_NOARGS, length_hint_doc},
35636
e22334b1da67 Convert iterator __len__() methods to a private API.
Raymond Hettinger <python@rcn.com>
parents: 35449
diff changeset
232 {NULL, NULL} /* sentinel */
31635
04eb2ebb46e2 Tidied up the implementations of reversed (including the custom ones
Raymond Hettinger <python@rcn.com>
parents: 30865
diff changeset
233 };
04eb2ebb46e2 Tidied up the implementations of reversed (including the custom ones
Raymond Hettinger <python@rcn.com>
parents: 30865
diff changeset
234
23702
d4f6e2adde48 Pyrangeiter_Type && range_iter should be static
Neal Norwitz <nnorwitz@gmail.com>
parents: 23695
diff changeset
235 static PyTypeObject Pyrangeiter_Type = {
23693
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
236 PyObject_HEAD_INIT(&PyType_Type)
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
237 0, /* ob_size */
23702
d4f6e2adde48 Pyrangeiter_Type && range_iter should be static
Neal Norwitz <nnorwitz@gmail.com>
parents: 23695
diff changeset
238 "rangeiterator", /* tp_name */
d4f6e2adde48 Pyrangeiter_Type && range_iter should be static
Neal Norwitz <nnorwitz@gmail.com>
parents: 23695
diff changeset
239 sizeof(rangeiterobject), /* tp_basicsize */
23693
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
240 0, /* tp_itemsize */
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
241 /* methods */
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
242 (destructor)PyObject_Del, /* tp_dealloc */
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
243 0, /* tp_print */
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
244 0, /* tp_getattr */
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
245 0, /* tp_setattr */
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
246 0, /* tp_compare */
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
247 0, /* tp_repr */
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
248 0, /* tp_as_number */
35636
e22334b1da67 Convert iterator __len__() methods to a private API.
Raymond Hettinger <python@rcn.com>
parents: 35449
diff changeset
249 0, /* tp_as_sequence */
23693
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
250 0, /* tp_as_mapping */
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
251 0, /* tp_hash */
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
252 0, /* tp_call */
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
253 0, /* tp_str */
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
254 PyObject_GenericGetAttr, /* tp_getattro */
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
255 0, /* tp_setattro */
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
256 0, /* tp_as_buffer */
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
257 Py_TPFLAGS_DEFAULT, /* tp_flags */
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
258 0, /* tp_doc */
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
259 0, /* tp_traverse */
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
260 0, /* tp_clear */
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
261 0, /* tp_richcompare */
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
262 0, /* tp_weaklistoffset */
28320
fd5ef7003469 Renamed PyObject_GenericGetIter to PyObject_SelfIter
Raymond Hettinger <python@rcn.com>
parents: 28308
diff changeset
263 PyObject_SelfIter, /* tp_iter */
23693
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
264 (iternextfunc)rangeiter_next, /* tp_iternext */
35636
e22334b1da67 Convert iterator __len__() methods to a private API.
Raymond Hettinger <python@rcn.com>
parents: 35449
diff changeset
265 rangeiter_methods, /* tp_methods */
e22334b1da67 Convert iterator __len__() methods to a private API.
Raymond Hettinger <python@rcn.com>
parents: 35449
diff changeset
266 0,
23693
8983158e9f11 SF 564601 adding rangeiterobject to make xrange() iterate like range().
Raymond Hettinger <python@rcn.com>
parents: 23664
diff changeset
267 };
37602
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
268
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
269 static PyObject *
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
270 range_iter(PyObject *seq)
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
271 {
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
272 rangeiterobject *it;
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
273
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
274 if (!PyRange_Check(seq)) {
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
275 PyErr_BadInternalCall();
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
276 return NULL;
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
277 }
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
278 it = PyObject_New(rangeiterobject, &Pyrangeiter_Type);
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
279 if (it == NULL)
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
280 return NULL;
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
281 it->index = 0;
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
282 it->start = ((rangeobject *)seq)->start;
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
283 it->step = ((rangeobject *)seq)->step;
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
284 it->len = ((rangeobject *)seq)->len;
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
285 return (PyObject *)it;
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
286 }
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
287
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
288 static PyObject *
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
289 range_reverse(PyObject *seq)
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
290 {
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
291 rangeiterobject *it;
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
292 long start, step, len;
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
293
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
294 if (!PyRange_Check(seq)) {
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
295 PyErr_BadInternalCall();
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
296 return NULL;
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
297 }
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
298 it = PyObject_New(rangeiterobject, &Pyrangeiter_Type);
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
299 if (it == NULL)
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
300 return NULL;
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
301
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
302 start = ((rangeobject *)seq)->start;
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
303 step = ((rangeobject *)seq)->step;
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
304 len = ((rangeobject *)seq)->len;
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
305
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
306 it->index = 0;
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
307 it->start = start + (len-1) * step;
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
308 it->step = -step;
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
309 it->len = len;
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
310
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
311 return (PyObject *)it;
ca95ad5b0fbc Remove "static forward" declaration. Move constructors
Martin v. Löwis <martin@v.loewis.de>
parents: 37476
diff changeset
312 }