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Created PyObject_GenericGetIter(). 

Factors out the common case of returning self.
This commit is contained in:
Raymond Hettinger 2003-03-17 08:24:35 +00:00
parent 08801db123
commit 0153826964
10 changed files with 30 additions and 147 deletions
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1
Include/object.h
View File

@ -385,6 +385,7 @@ PyAPI_FUNC(PyObject *) PyObject_GetAttr(PyObject *, PyObject *);
PyAPI_FUNC(int) PyObject_SetAttr(PyObject *, PyObject *, PyObject *);
PyAPI_FUNC(int) PyObject_HasAttr(PyObject *, PyObject *);
PyAPI_FUNC(PyObject **) _PyObject_GetDictPtr(PyObject *);
PyAPI_FUNC(PyObject *) PyObject_GenericGetIter(PyObject *);
PyAPI_FUNC(PyObject *) PyObject_GenericGetAttr(PyObject *, PyObject *);
PyAPI_FUNC(int) PyObject_GenericSetAttr(PyObject *,
PyObject *, PyObject *);

3
Misc/NEWS
View File

@ -86,6 +86,9 @@ Build
C API
-----
- Added PyObject_GenericGetIter() to fill the tp_iter slot for the
typical case where the method returns its self argument.
- The extended type structure used for heap types (new-style
classes defined by Python code using a class statement) is now
exported from object.h as PyHeapTypeObject. (SF patch #696193.)

108
Modules/itertoolsmodule.c
View File

@ -105,13 +105,6 @@ cycle_next(cycleobject *lz)
}
}
static PyObject *
cycle_getiter(PyObject *lz)
{
Py_INCREF(lz);
return lz;
}
PyDoc_STRVAR(cycle_doc,
"cycle(iterable) --> cycle object\n\
\n\
@ -147,7 +140,7 @@ PyTypeObject cycle_type = {
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)cycle_getiter, /* tp_iter */
PyObject_GenericGetIter, /* tp_iter */
(iternextfunc)cycle_next, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */
@ -261,13 +254,6 @@ dropwhile_next(dropwhileobject *lz)
}
}
static PyObject *
dropwhile_getiter(PyObject *lz)
{
Py_INCREF(lz);
return lz;
}
PyDoc_STRVAR(dropwhile_doc,
"dropwhile(predicate, iterable) --> dropwhile object\n\
\n\
@ -303,7 +289,7 @@ PyTypeObject dropwhile_type = {
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)dropwhile_getiter, /* tp_iter */
PyObject_GenericGetIter, /* tp_iter */
(iternextfunc)dropwhile_next, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */
@ -416,13 +402,6 @@ takewhile_next(takewhileobject *lz)
return NULL;
}
static PyObject *
takewhile_getiter(PyObject *lz)
{
Py_INCREF(lz);
return lz;
}
PyDoc_STRVAR(takewhile_doc,
"takewhile(predicate, iterable) --> takewhile object\n\
\n\
@ -458,7 +437,7 @@ PyTypeObject takewhile_type = {
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)takewhile_getiter, /* tp_iter */
PyObject_GenericGetIter, /* tp_iter */
(iternextfunc)takewhile_next, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */
@ -589,13 +568,6 @@ islice_next(isliceobject *lz)
return item;
}
static PyObject *
islice_getiter(PyObject *lz)
{
Py_INCREF(lz);
return lz;
}
PyDoc_STRVAR(islice_doc,
"islice(iterable, [start,] stop [, step]) --> islice object\n\
\n\
@ -635,7 +607,7 @@ PyTypeObject islice_type = {
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)islice_getiter, /* tp_iter */
PyObject_GenericGetIter, /* tp_iter */
(iternextfunc)islice_next, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */
@ -739,13 +711,6 @@ starmap_next(starmapobject *lz)
return result;
}
static PyObject *
starmap_getiter(PyObject *lz)
{
Py_INCREF(lz);
return lz;
}
PyDoc_STRVAR(starmap_doc,
"starmap(function, sequence) --> starmap object\n\
\n\
@ -781,7 +746,7 @@ PyTypeObject starmap_type = {
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)starmap_getiter, /* tp_iter */
PyObject_GenericGetIter, /* tp_iter */
(iternextfunc)starmap_next, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */
@ -930,13 +895,6 @@ imap_next(imapobject *lz)
return result;
}
static PyObject *
imap_getiter(PyObject *lz)
{
Py_INCREF(lz);
return lz;
}
PyDoc_STRVAR(imap_doc,
"imap(func, *iterables) --> imap object\n\
\n\
@ -975,7 +933,7 @@ PyTypeObject imap_type = {
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)imap_getiter, /* tp_iter */
PyObject_GenericGetIter, /* tp_iter */
(iternextfunc)imap_next, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */
@ -1074,13 +1032,6 @@ chain_next(chainobject *lz)
return NULL;
}
static PyObject *
chain_getiter(PyObject *lz)
{
Py_INCREF(lz);
return lz;
}
PyDoc_STRVAR(chain_doc,
"chain(*iterables) --> chain object\n\
\n\
@ -1117,7 +1068,7 @@ PyTypeObject chain_type = {
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)chain_getiter, /* tp_iter */
PyObject_GenericGetIter, /* tp_iter */
(iternextfunc)chain_next, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */
@ -1231,13 +1182,6 @@ ifilter_next(ifilterobject *lz)
}
}
static PyObject *
ifilter_getiter(PyObject *lz)
{
Py_INCREF(lz);
return lz;
}
PyDoc_STRVAR(ifilter_doc,
"ifilter(function or None, sequence) --> ifilter object\n\
\n\
@ -1273,7 +1217,7 @@ PyTypeObject ifilter_type = {
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)ifilter_getiter, /* tp_iter */
PyObject_GenericGetIter, /* tp_iter */
(iternextfunc)ifilter_next, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */
@ -1387,13 +1331,6 @@ ifilterfalse_next(ifilterfalseobject *lz)
}
}
static PyObject *
ifilterfalse_getiter(PyObject *lz)
{
Py_INCREF(lz);
return lz;
}
PyDoc_STRVAR(ifilterfalse_doc,
"ifilterfalse(function or None, sequence) --> ifilterfalse object\n\
\n\
@ -1429,7 +1366,7 @@ PyTypeObject ifilterfalse_type = {
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)ifilterfalse_getiter, /* tp_iter */
PyObject_GenericGetIter, /* tp_iter */
(iternextfunc)ifilterfalse_next, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */
@ -1479,13 +1416,6 @@ count_next(countobject *lz)
return PyInt_FromLong(lz->cnt++);
}
static PyObject *
count_getiter(PyObject *lz)
{
Py_INCREF(lz);
return lz;
}
PyDoc_STRVAR(count_doc,
"count([firstval]) --> count object\n\
\n\
@ -1520,7 +1450,7 @@ PyTypeObject count_type = {
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)count_getiter, /* tp_iter */
PyObject_GenericGetIter, /* tp_iter */
(iternextfunc)count_next, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */
@ -1665,13 +1595,6 @@ izip_next(izipobject *lz)
return result;
}
static PyObject *
izip_getiter(PyObject *lz)
{
Py_INCREF(lz);
return lz;
}
PyDoc_STRVAR(izip_doc,
"izip(iter1 [,iter2 [...]]) --> izip object\n\
\n\
@ -1711,7 +1634,7 @@ PyTypeObject izip_type = {
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)izip_getiter, /* tp_iter */
PyObject_GenericGetIter, /* tp_iter */
(iternextfunc)izip_next, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */
@ -1784,13 +1707,6 @@ repeat_next(repeatobject *ro)
return ro->element;
}
static PyObject *
repeat_getiter(PyObject *ro)
{
Py_INCREF(ro);
return ro;
}
PyDoc_STRVAR(repeat_doc,
"repeat(element [,times]) -> create an iterator which returns the element\n\
for the specified number of times. If not specified, returns the element\n\
@ -1825,7 +1741,7 @@ PyTypeObject repeat_type = {
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)repeat_getiter, /* tp_iter */
PyObject_GenericGetIter, /* tp_iter */
(iternextfunc)repeat_next, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */

9
Objects/dictobject.c
View File

@ -2013,13 +2013,6 @@ dictiter_dealloc(dictiterobject *di)
PyObject_Del(di);
}
static PyObject *
dictiter_getiter(PyObject *it)
{
Py_INCREF(it);
return it;
}
static PyObject *dictiter_iternext(dictiterobject *di)
{
PyObject *key, *value;
@ -2069,7 +2062,7 @@ PyTypeObject PyDictIter_Type = {
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)dictiter_getiter, /* tp_iter */
PyObject_GenericGetIter, /* tp_iter */
(iternextfunc)dictiter_iternext, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */

9
Objects/enumobject.c
View File

@ -78,13 +78,6 @@ enum_next(enumobject *en)
return result;
}
static PyObject *
enum_getiter(PyObject *en)
{
Py_INCREF(en);
return en;
}
PyDoc_STRVAR(enum_doc,
"enumerate(iterable) -> create an enumerating-iterator");
@ -117,7 +110,7 @@ PyTypeObject PyEnum_Type = {
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)enum_getiter, /* tp_iter */
PyObject_GenericGetIter, /* tp_iter */
(iternextfunc)enum_next, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */

11
Objects/iterobject.c
View File

@ -43,13 +43,6 @@ iter_traverse(seqiterobject *it, visitproc visit, void *arg)
return visit(it->it_seq, arg);
}
static PyObject *
iter_getiter(PyObject *it)
{
Py_INCREF(it);
return it;
}
static PyObject *
iter_iternext(PyObject *iterator)
{
@ -106,7 +99,7 @@ PyTypeObject PySeqIter_Type = {
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)iter_getiter, /* tp_iter */
PyObject_GenericGetIter, /* tp_iter */
(iternextfunc)iter_iternext, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */
@ -223,7 +216,7 @@ PyTypeObject PyCallIter_Type = {
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)iter_getiter, /* tp_iter */
PyObject_GenericGetIter, /* tp_iter */
(iternextfunc)calliter_iternext, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */

10
Objects/listobject.c
View File

@ -2398,14 +2398,6 @@ listiter_traverse(listiterobject *it, visitproc visit, void *arg)
return visit((PyObject *)it->it_seq, arg);
}
static PyObject *
listiter_getiter(PyObject *it)
{
Py_INCREF(it);
return it;
}
static PyObject *
listiter_next(listiterobject *it)
{
@ -2458,7 +2450,7 @@ PyTypeObject PyListIter_Type = {
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)listiter_getiter, /* tp_iter */
PyObject_GenericGetIter, /* tp_iter */
(iternextfunc)listiter_next, /* tp_iternext */
0, /* tp_methods */
0, /* tp_members */

7
Objects/object.c
View File

@ -1300,6 +1300,13 @@ _PyObject_GetDictPtr(PyObject *obj)
/* Generic GetAttr functions - put these in your tp_[gs]etattro slot */
PyObject *
PyObject_GenericGetIter(PyObject *obj)
{
Py_INCREF(obj);
return obj;
}
PyObject *
PyObject_GenericGetAttr(PyObject *obj, PyObject *name)
{

9
Objects/rangeobject.c
View File

@ -245,13 +245,6 @@ range_iter(PyObject *seq)
return (PyObject *)it;
}
static PyObject *
rangeiter_getiter(PyObject *it)
{
Py_INCREF(it);
return it;
}
static PyObject *
rangeiter_next(rangeiterobject *r)
{
@ -288,7 +281,7 @@ static PyTypeObject Pyrangeiter_Type = {
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)rangeiter_getiter, /* tp_iter */
PyObject_GenericGetIter, /* tp_iter */
(iternextfunc)rangeiter_next, /* tp_iternext */
0, /* tp_methods */
};

10
Objects/tupleobject.c
View File

@ -779,14 +779,6 @@ tupleiter_traverse(tupleiterobject *it, visitproc visit, void *arg)
return visit((PyObject *)it->it_seq, arg);
}
static PyObject *
tupleiter_getiter(PyObject *it)
{
Py_INCREF(it);
return it;
}
static PyObject *
tupleiter_next(tupleiterobject *it)
{
@ -839,6 +831,6 @@ PyTypeObject PyTupleIter_Type = {
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)tupleiter_getiter, /* tp_iter */
PyObject_GenericGetIter, /* tp_iter */
(iternextfunc)tupleiter_next, /* tp_iternext */
};