FazBrowse GitHub Viewer
|
Trending
|
URL:
|
Home
Tools:
[Download Repo ZIP]
[View Raw Code]
[Original HTTPS Page]
cpython/Objects/iterobject.c at 2.7 · python-emscripten/cpython · GitHub
python-emscripten
cpython
Repository navigation
Code
Pull requests
Actions
Projects
Security and quality
Insights
Expand file tree
Breadcrumbs
cpython
/
Objects
/
iterobject.c
Copy path
More file actions
More file actions
Latest commit
History
History
History
235 lines (215 loc) · 7.67 KB
Breadcrumbs
cpython
/
Objects
/
iterobject.c
Copy path
File metadata and controls
235 lines (215 loc) · 7.67 KB
Raw
Copy raw file
Download raw file
Open symbols panel
Edit and raw actions
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
/* Iterator objects */
#include
"Python.h"
typedef
struct
{
PyObject_HEAD
long
it_index
;
PyObject
*
it_seq
;
/* Set to NULL when iterator is exhausted */
}
seqiterobject
;
PyObject
*
PySeqIter_New
(
PyObject
*
seq
)
{
seqiterobject
*
it
;
if
(!
PySequence_Check
(
seq
)) {
PyErr_BadInternalCall
();
return
NULL
;
}
it
=
PyObject_GC_New
(
seqiterobject
,
&
PySeqIter_Type
);
if
(
it
==
NULL
)
return
NULL
;
it
->
it_index
=
0
;
Py_INCREF
(
seq
);
it
->
it_seq
=
seq
;
_PyObject_GC_TRACK
(
it
);
return
(
PyObject
*
)
it
;
}
static
void
iter_dealloc
(
seqiterobject
*
it
)
{
_PyObject_GC_UNTRACK
(
it
);
Py_XDECREF
(
it
->
it_seq
);
PyObject_GC_Del
(
it
);
}
static
int
iter_traverse
(
seqiterobject
*
it
,
visitproc
visit
,
void
*
arg
)
{
Py_VISIT
(
it
->
it_seq
);
return
0
;
}
static
PyObject
*
iter_iternext
(
PyObject
*
iterator
)
{
seqiterobject
*
it
;
PyObject
*
seq
;
PyObject
*
result
;
assert
(
PySeqIter_Check
(
iterator
));
it
=
(
seqiterobject
*
)
iterator
;
seq
=
it
->
it_seq
;
if
(
seq
==
NULL
)
return
NULL
;
if
(
it
->
it_index
==
LONG_MAX
) {
PyErr_SetString
(
PyExc_OverflowError
,
"iter index too large"
);
return
NULL
;
}
result
=
PySequence_GetItem
(
seq
,
it
->
it_index
);
if
(
result
!=
NULL
) {
it
->
it_index
++
;
return
result
;
}
if
(
PyErr_ExceptionMatches
(
PyExc_IndexError
)
||
PyErr_ExceptionMatches
(
PyExc_StopIteration
))
{
PyErr_Clear
();
it
->
it_seq
=
NULL
;
Py_DECREF
(
seq
);
}
return
NULL
;
}
static
PyObject
*
iter_len
(
seqiterobject
*
it
)
{
Py_ssize_t
seqsize
,
len
;
if
(
it
->
it_seq
) {
seqsize
=
PySequence_Size
(
it
->
it_seq
);
if
(
seqsize
==
-1
)
return
NULL
;
len
=
seqsize
-
it
->
it_index
;
if
(
len
>=
0
)
return
PyInt_FromSsize_t
(
len
);
}
return
PyInt_FromLong
(
0
);
}
PyDoc_STRVAR
(
length_hint_doc
,
"Private method returning an estimate of len(list(it))."
);
static
PyMethodDef
seqiter_methods
[]
=
{
{
"__length_hint__"
, (
PyCFunction
)
iter_len
,
METH_NOARGS
,
length_hint_doc
},
{
NULL
,
NULL
}
/* sentinel */
};
PyTypeObject
PySeqIter_Type
=
{
PyVarObject_HEAD_INIT
(
&
PyType_Type
,
0
)
"iterator"
,
/* tp_name */
sizeof
(
seqiterobject
),
/* tp_basicsize */
0
,
/* tp_itemsize */
/* methods */
(
destructor
)
iter_dealloc
,
/* tp_dealloc */
0
,
/* tp_print */
0
,
/* tp_getattr */
0
,
/* tp_setattr */
0
,
/* tp_compare */
0
,
/* tp_repr */
0
,
/* tp_as_number */
0
,
/* tp_as_sequence */
0
,
/* tp_as_mapping */
0
,
/* tp_hash */
0
,
/* tp_call */
0
,
/* tp_str */
PyObject_GenericGetAttr
,
/* tp_getattro */
0
,
/* tp_setattro */
0
,
/* tp_as_buffer */
Py_TPFLAGS_DEFAULT
|
Py_TPFLAGS_HAVE_GC
,
/* tp_flags */
0
,
/* tp_doc */
(
traverseproc
)
iter_traverse
,
/* tp_traverse */
0
,
/* tp_clear */
0
,
/* tp_richcompare */
0
,
/* tp_weaklistoffset */
PyObject_SelfIter
,
/* tp_iter */
iter_iternext
,
/* tp_iternext */
seqiter_methods
,
/* tp_methods */
0
,
/* tp_members */
};
/* -------------------------------------- */
typedef
struct
{
PyObject_HEAD
PyObject
*
it_callable
;
/* Set to NULL when iterator is exhausted */
PyObject
*
it_sentinel
;
/* Set to NULL when iterator is exhausted */
}
calliterobject
;
PyObject
*
PyCallIter_New
(
PyObject
*
callable
,
PyObject
*
sentinel
)
{
calliterobject
*
it
;
it
=
PyObject_GC_New
(
calliterobject
,
&
PyCallIter_Type
);
if
(
it
==
NULL
)
return
NULL
;
Py_INCREF
(
callable
);
it
->
it_callable
=
callable
;
Py_INCREF
(
sentinel
);
it
->
it_sentinel
=
sentinel
;
_PyObject_GC_TRACK
(
it
);
return
(
PyObject
*
)
it
;
}
static
void
calliter_dealloc
(
calliterobject
*
it
)
{
_PyObject_GC_UNTRACK
(
it
);
Py_XDECREF
(
it
->
it_callable
);
Py_XDECREF
(
it
->
it_sentinel
);
PyObject_GC_Del
(
it
);
}
static
int
calliter_traverse
(
calliterobject
*
it
,
visitproc
visit
,
void
*
arg
)
{
Py_VISIT
(
it
->
it_callable
);
Py_VISIT
(
it
->
it_sentinel
);
return
0
;
}
static
PyObject
*
calliter_iternext
(
calliterobject
*
it
)
{
if
(
it
->
it_callable
!=
NULL
) {
PyObject
*
args
=
PyTuple_New
(
0
);
PyObject
*
result
;
if
(
args
==
NULL
)
return
NULL
;
result
=
PyObject_Call
(
it
->
it_callable
,
args
,
NULL
);
Py_DECREF
(
args
);
if
(
result
!=
NULL
) {
int
ok
;
ok
=
PyObject_RichCompareBool
(
result
,
it
->
it_sentinel
,
Py_EQ
);
if
(
ok
==
0
)
return
result
;
/* Common case, fast path */
Py_DECREF
(
result
);
if
(
ok
>
0
) {
Py_CLEAR
(
it
->
it_callable
);
Py_CLEAR
(
it
->
it_sentinel
);
}
}
else
if
(
PyErr_ExceptionMatches
(
PyExc_StopIteration
)) {
PyErr_Clear
();
Py_CLEAR
(
it
->
it_callable
);
Py_CLEAR
(
it
->
it_sentinel
);
}
}
return
NULL
;
}
PyTypeObject
PyCallIter_Type
=
{
PyVarObject_HEAD_INIT
(
&
PyType_Type
,
0
)
"callable-iterator"
,
/* tp_name */
sizeof
(
calliterobject
),
/* tp_basicsize */
0
,
/* tp_itemsize */
/* methods */
(
destructor
)
calliter_dealloc
,
/* tp_dealloc */
0
,
/* tp_print */
0
,
/* tp_getattr */
0
,
/* tp_setattr */
0
,
/* tp_compare */
0
,
/* tp_repr */
0
,
/* tp_as_number */
0
,
/* tp_as_sequence */
0
,
/* tp_as_mapping */
0
,
/* tp_hash */
0
,
/* tp_call */
0
,
/* tp_str */
PyObject_GenericGetAttr
,
/* tp_getattro */
0
,
/* tp_setattro */
0
,
/* tp_as_buffer */
Py_TPFLAGS_DEFAULT
|
Py_TPFLAGS_HAVE_GC
,
/* tp_flags */
0
,
/* tp_doc */
(
traverseproc
)
calliter_traverse
,
/* tp_traverse */
0
,
/* tp_clear */
0
,
/* tp_richcompare */
0
,
/* tp_weaklistoffset */
PyObject_SelfIter
,
/* tp_iter */
(
iternextfunc
)
calliter_iternext
,
/* tp_iternext */
0
,
/* tp_methods */
};
Back
|
FazBrowse Home
|
New Git URL