Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 1 | |
| 2 | #include "Python.h" |
| 3 | #include "structmember.h" |
| 4 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5 | /* _functools module written and maintained |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 6 | by Hye-Shik Chang <perky@FreeBSD.org> |
| 7 | with adaptations by Raymond Hettinger <python@rcn.com> |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 8 | Copyright (c) 2004, 2005, 2006 Python Software Foundation. |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 9 | All rights reserved. |
| 10 | */ |
| 11 | |
| 12 | /* partial object **********************************************************/ |
| 13 | |
| 14 | typedef struct { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 15 | PyObject_HEAD |
| 16 | PyObject *fn; |
| 17 | PyObject *args; |
| 18 | PyObject *kw; |
| 19 | PyObject *dict; |
| 20 | PyObject *weakreflist; /* List of weak references */ |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 21 | } partialobject; |
| 22 | |
| 23 | static PyTypeObject partial_type; |
| 24 | |
| 25 | static PyObject * |
| 26 | partial_new(PyTypeObject *type, PyObject *args, PyObject *kw) |
| 27 | { |
Alexander Belopolsky | e49af34 | 2015-03-01 15:08:17 -0500 | [diff] [blame] | 28 | PyObject *func, *pargs, *nargs, *pkw; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 29 | partialobject *pto; |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 30 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 31 | if (PyTuple_GET_SIZE(args) < 1) { |
| 32 | PyErr_SetString(PyExc_TypeError, |
| 33 | "type 'partial' takes at least one argument"); |
| 34 | return NULL; |
| 35 | } |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 36 | |
Serhiy Storchaka | 3874128 | 2016-02-02 18:45:17 +0200 | [diff] [blame] | 37 | pargs = pkw = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 38 | func = PyTuple_GET_ITEM(args, 0); |
Alexander Belopolsky | e49af34 | 2015-03-01 15:08:17 -0500 | [diff] [blame] | 39 | if (Py_TYPE(func) == &partial_type && type == &partial_type) { |
| 40 | partialobject *part = (partialobject *)func; |
| 41 | if (part->dict == NULL) { |
| 42 | pargs = part->args; |
| 43 | pkw = part->kw; |
| 44 | func = part->fn; |
Serhiy Storchaka | 3874128 | 2016-02-02 18:45:17 +0200 | [diff] [blame] | 45 | assert(PyTuple_Check(pargs)); |
| 46 | assert(PyDict_Check(pkw)); |
Alexander Belopolsky | e49af34 | 2015-03-01 15:08:17 -0500 | [diff] [blame] | 47 | } |
| 48 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 49 | if (!PyCallable_Check(func)) { |
| 50 | PyErr_SetString(PyExc_TypeError, |
| 51 | "the first argument must be callable"); |
| 52 | return NULL; |
| 53 | } |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 54 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 55 | /* create partialobject structure */ |
| 56 | pto = (partialobject *)type->tp_alloc(type, 0); |
| 57 | if (pto == NULL) |
| 58 | return NULL; |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 59 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 60 | pto->fn = func; |
| 61 | Py_INCREF(func); |
Alexander Belopolsky | e49af34 | 2015-03-01 15:08:17 -0500 | [diff] [blame] | 62 | |
| 63 | nargs = PyTuple_GetSlice(args, 1, PY_SSIZE_T_MAX); |
| 64 | if (nargs == NULL) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 65 | Py_DECREF(pto); |
| 66 | return NULL; |
| 67 | } |
Serhiy Storchaka | 3874128 | 2016-02-02 18:45:17 +0200 | [diff] [blame] | 68 | if (pargs == NULL || PyTuple_GET_SIZE(pargs) == 0) { |
Alexander Belopolsky | e49af34 | 2015-03-01 15:08:17 -0500 | [diff] [blame] | 69 | pto->args = nargs; |
| 70 | Py_INCREF(nargs); |
| 71 | } |
| 72 | else if (PyTuple_GET_SIZE(nargs) == 0) { |
| 73 | pto->args = pargs; |
| 74 | Py_INCREF(pargs); |
| 75 | } |
| 76 | else { |
| 77 | pto->args = PySequence_Concat(pargs, nargs); |
| 78 | if (pto->args == NULL) { |
Serhiy Storchaka | 3874128 | 2016-02-02 18:45:17 +0200 | [diff] [blame] | 79 | Py_DECREF(nargs); |
Alexander Belopolsky | e49af34 | 2015-03-01 15:08:17 -0500 | [diff] [blame] | 80 | Py_DECREF(pto); |
| 81 | return NULL; |
| 82 | } |
Serhiy Storchaka | 3874128 | 2016-02-02 18:45:17 +0200 | [diff] [blame] | 83 | assert(PyTuple_Check(pto->args)); |
Alexander Belopolsky | e49af34 | 2015-03-01 15:08:17 -0500 | [diff] [blame] | 84 | } |
| 85 | Py_DECREF(nargs); |
| 86 | |
Serhiy Storchaka | 3874128 | 2016-02-02 18:45:17 +0200 | [diff] [blame] | 87 | if (pkw == NULL || PyDict_Size(pkw) == 0) { |
| 88 | if (kw == NULL) { |
| 89 | pto->kw = PyDict_New(); |
Alexander Belopolsky | e49af34 | 2015-03-01 15:08:17 -0500 | [diff] [blame] | 90 | } |
| 91 | else { |
Serhiy Storchaka | 3874128 | 2016-02-02 18:45:17 +0200 | [diff] [blame] | 92 | Py_INCREF(kw); |
| 93 | pto->kw = kw; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 94 | } |
Alexander Belopolsky | e49af34 | 2015-03-01 15:08:17 -0500 | [diff] [blame] | 95 | } |
| 96 | else { |
Serhiy Storchaka | 3874128 | 2016-02-02 18:45:17 +0200 | [diff] [blame] | 97 | pto->kw = PyDict_Copy(pkw); |
| 98 | if (kw != NULL && pto->kw != NULL) { |
| 99 | if (PyDict_Merge(pto->kw, kw, 1) != 0) { |
Benjamin Peterson | dae2ef1 | 2015-05-09 00:29:08 -0400 | [diff] [blame] | 100 | Py_DECREF(pto); |
| 101 | return NULL; |
| 102 | } |
| 103 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 104 | } |
Serhiy Storchaka | 3874128 | 2016-02-02 18:45:17 +0200 | [diff] [blame] | 105 | if (pto->kw == NULL) { |
| 106 | Py_DECREF(pto); |
| 107 | return NULL; |
| 108 | } |
Raymond Hettinger | c8b6d1b | 2005-03-08 06:14:50 +0000 | [diff] [blame] | 109 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 110 | return (PyObject *)pto; |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 111 | } |
| 112 | |
| 113 | static void |
| 114 | partial_dealloc(partialobject *pto) |
| 115 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 116 | PyObject_GC_UnTrack(pto); |
| 117 | if (pto->weakreflist != NULL) |
| 118 | PyObject_ClearWeakRefs((PyObject *) pto); |
| 119 | Py_XDECREF(pto->fn); |
| 120 | Py_XDECREF(pto->args); |
| 121 | Py_XDECREF(pto->kw); |
| 122 | Py_XDECREF(pto->dict); |
| 123 | Py_TYPE(pto)->tp_free(pto); |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 124 | } |
| 125 | |
| 126 | static PyObject * |
| 127 | partial_call(partialobject *pto, PyObject *args, PyObject *kw) |
| 128 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 129 | PyObject *ret; |
Serhiy Storchaka | 3874128 | 2016-02-02 18:45:17 +0200 | [diff] [blame] | 130 | PyObject *argappl, *kwappl; |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 131 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 132 | assert (PyCallable_Check(pto->fn)); |
| 133 | assert (PyTuple_Check(pto->args)); |
Serhiy Storchaka | 3874128 | 2016-02-02 18:45:17 +0200 | [diff] [blame] | 134 | assert (PyDict_Check(pto->kw)); |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 135 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 136 | if (PyTuple_GET_SIZE(pto->args) == 0) { |
| 137 | argappl = args; |
| 138 | Py_INCREF(args); |
| 139 | } else if (PyTuple_GET_SIZE(args) == 0) { |
| 140 | argappl = pto->args; |
| 141 | Py_INCREF(pto->args); |
| 142 | } else { |
| 143 | argappl = PySequence_Concat(pto->args, args); |
| 144 | if (argappl == NULL) |
| 145 | return NULL; |
Serhiy Storchaka | 3874128 | 2016-02-02 18:45:17 +0200 | [diff] [blame] | 146 | assert(PyTuple_Check(argappl)); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 147 | } |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 148 | |
Serhiy Storchaka | 3874128 | 2016-02-02 18:45:17 +0200 | [diff] [blame] | 149 | if (PyDict_Size(pto->kw) == 0) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 150 | kwappl = kw; |
Serhiy Storchaka | 3874128 | 2016-02-02 18:45:17 +0200 | [diff] [blame] | 151 | Py_XINCREF(kwappl); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 152 | } else { |
| 153 | kwappl = PyDict_Copy(pto->kw); |
| 154 | if (kwappl == NULL) { |
| 155 | Py_DECREF(argappl); |
| 156 | return NULL; |
| 157 | } |
| 158 | if (kw != NULL) { |
| 159 | if (PyDict_Merge(kwappl, kw, 1) != 0) { |
| 160 | Py_DECREF(argappl); |
| 161 | Py_DECREF(kwappl); |
| 162 | return NULL; |
| 163 | } |
| 164 | } |
| 165 | } |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 166 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 167 | ret = PyObject_Call(pto->fn, argappl, kwappl); |
| 168 | Py_DECREF(argappl); |
| 169 | Py_XDECREF(kwappl); |
| 170 | return ret; |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 171 | } |
| 172 | |
| 173 | static int |
| 174 | partial_traverse(partialobject *pto, visitproc visit, void *arg) |
| 175 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 176 | Py_VISIT(pto->fn); |
| 177 | Py_VISIT(pto->args); |
| 178 | Py_VISIT(pto->kw); |
| 179 | Py_VISIT(pto->dict); |
| 180 | return 0; |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 181 | } |
| 182 | |
| 183 | PyDoc_STRVAR(partial_doc, |
| 184 | "partial(func, *args, **keywords) - new function with partial application\n\ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 185 | of the given arguments and keywords.\n"); |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 186 | |
| 187 | #define OFF(x) offsetof(partialobject, x) |
| 188 | static PyMemberDef partial_memberlist[] = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 189 | {"func", T_OBJECT, OFF(fn), READONLY, |
| 190 | "function object to use in future partial calls"}, |
| 191 | {"args", T_OBJECT, OFF(args), READONLY, |
| 192 | "tuple of arguments to future partial calls"}, |
| 193 | {"keywords", T_OBJECT, OFF(kw), READONLY, |
| 194 | "dictionary of keyword arguments to future partial calls"}, |
| 195 | {NULL} /* Sentinel */ |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 196 | }; |
| 197 | |
Georg Brandl | c2fb6c7 | 2006-02-21 17:49:57 +0000 | [diff] [blame] | 198 | static PyGetSetDef partial_getsetlist[] = { |
Benjamin Peterson | 23d7f12 | 2012-02-19 20:02:57 -0500 | [diff] [blame] | 199 | {"__dict__", PyObject_GenericGetDict, PyObject_GenericSetDict}, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 200 | {NULL} /* Sentinel */ |
Raymond Hettinger | c8b6d1b | 2005-03-08 06:14:50 +0000 | [diff] [blame] | 201 | }; |
| 202 | |
Alexander Belopolsky | 41e422a | 2010-12-01 20:05:49 +0000 | [diff] [blame] | 203 | static PyObject * |
| 204 | partial_repr(partialobject *pto) |
| 205 | { |
Serhiy Storchaka | 179f960 | 2016-06-12 11:44:06 +0300 | [diff] [blame] | 206 | PyObject *result = NULL; |
Alexander Belopolsky | 41e422a | 2010-12-01 20:05:49 +0000 | [diff] [blame] | 207 | PyObject *arglist; |
Alexander Belopolsky | 41e422a | 2010-12-01 20:05:49 +0000 | [diff] [blame] | 208 | Py_ssize_t i, n; |
Serhiy Storchaka | 3874128 | 2016-02-02 18:45:17 +0200 | [diff] [blame] | 209 | PyObject *key, *value; |
Serhiy Storchaka | 179f960 | 2016-06-12 11:44:06 +0300 | [diff] [blame] | 210 | int status; |
| 211 | |
| 212 | status = Py_ReprEnter((PyObject *)pto); |
| 213 | if (status != 0) { |
| 214 | if (status < 0) |
| 215 | return NULL; |
| 216 | return PyUnicode_FromFormat("%s(...)", Py_TYPE(pto)->tp_name); |
| 217 | } |
Alexander Belopolsky | 41e422a | 2010-12-01 20:05:49 +0000 | [diff] [blame] | 218 | |
| 219 | arglist = PyUnicode_FromString(""); |
Serhiy Storchaka | 179f960 | 2016-06-12 11:44:06 +0300 | [diff] [blame] | 220 | if (arglist == NULL) |
| 221 | goto done; |
Alexander Belopolsky | 41e422a | 2010-12-01 20:05:49 +0000 | [diff] [blame] | 222 | /* Pack positional arguments */ |
| 223 | assert (PyTuple_Check(pto->args)); |
| 224 | n = PyTuple_GET_SIZE(pto->args); |
| 225 | for (i = 0; i < n; i++) { |
Serhiy Storchaka | 179f960 | 2016-06-12 11:44:06 +0300 | [diff] [blame] | 226 | Py_SETREF(arglist, PyUnicode_FromFormat("%U, %R", arglist, |
| 227 | PyTuple_GET_ITEM(pto->args, i))); |
| 228 | if (arglist == NULL) |
| 229 | goto done; |
Alexander Belopolsky | 41e422a | 2010-12-01 20:05:49 +0000 | [diff] [blame] | 230 | } |
| 231 | /* Pack keyword arguments */ |
Serhiy Storchaka | 3874128 | 2016-02-02 18:45:17 +0200 | [diff] [blame] | 232 | assert (PyDict_Check(pto->kw)); |
| 233 | for (i = 0; PyDict_Next(pto->kw, &i, &key, &value);) { |
Serhiy Storchaka | 179f960 | 2016-06-12 11:44:06 +0300 | [diff] [blame] | 234 | Py_SETREF(arglist, PyUnicode_FromFormat("%U, %U=%R", arglist, |
| 235 | key, value)); |
| 236 | if (arglist == NULL) |
| 237 | goto done; |
Alexander Belopolsky | 41e422a | 2010-12-01 20:05:49 +0000 | [diff] [blame] | 238 | } |
| 239 | result = PyUnicode_FromFormat("%s(%R%U)", Py_TYPE(pto)->tp_name, |
| 240 | pto->fn, arglist); |
| 241 | Py_DECREF(arglist); |
Serhiy Storchaka | 179f960 | 2016-06-12 11:44:06 +0300 | [diff] [blame] | 242 | |
| 243 | done: |
| 244 | Py_ReprLeave((PyObject *)pto); |
Alexander Belopolsky | 41e422a | 2010-12-01 20:05:49 +0000 | [diff] [blame] | 245 | return result; |
| 246 | } |
| 247 | |
Jack Diederich | e0cbd69 | 2009-04-01 04:27:09 +0000 | [diff] [blame] | 248 | /* Pickle strategy: |
| 249 | __reduce__ by itself doesn't support getting kwargs in the unpickle |
| 250 | operation so we define a __setstate__ that replaces all the information |
| 251 | about the partial. If we only replaced part of it someone would use |
Ezio Melotti | 1392500 | 2011-03-16 11:05:33 +0200 | [diff] [blame] | 252 | it as a hook to do strange things. |
Jack Diederich | e0cbd69 | 2009-04-01 04:27:09 +0000 | [diff] [blame] | 253 | */ |
| 254 | |
Antoine Pitrou | 69f7114 | 2009-05-24 21:25:49 +0000 | [diff] [blame] | 255 | static PyObject * |
Jack Diederich | e0cbd69 | 2009-04-01 04:27:09 +0000 | [diff] [blame] | 256 | partial_reduce(partialobject *pto, PyObject *unused) |
| 257 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 258 | return Py_BuildValue("O(O)(OOOO)", Py_TYPE(pto), pto->fn, pto->fn, |
| 259 | pto->args, pto->kw, |
| 260 | pto->dict ? pto->dict : Py_None); |
Jack Diederich | e0cbd69 | 2009-04-01 04:27:09 +0000 | [diff] [blame] | 261 | } |
| 262 | |
Antoine Pitrou | 69f7114 | 2009-05-24 21:25:49 +0000 | [diff] [blame] | 263 | static PyObject * |
Serhiy Storchaka | 19c4e0d | 2013-02-04 12:47:24 +0200 | [diff] [blame] | 264 | partial_setstate(partialobject *pto, PyObject *state) |
Jack Diederich | e0cbd69 | 2009-04-01 04:27:09 +0000 | [diff] [blame] | 265 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 266 | PyObject *fn, *fnargs, *kw, *dict; |
Serhiy Storchaka | 3874128 | 2016-02-02 18:45:17 +0200 | [diff] [blame] | 267 | |
| 268 | if (!PyTuple_Check(state) || |
| 269 | !PyArg_ParseTuple(state, "OOOO", &fn, &fnargs, &kw, &dict) || |
| 270 | !PyCallable_Check(fn) || |
| 271 | !PyTuple_Check(fnargs) || |
| 272 | (kw != Py_None && !PyDict_Check(kw))) |
| 273 | { |
| 274 | PyErr_SetString(PyExc_TypeError, "invalid partial state"); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 275 | return NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 276 | } |
Serhiy Storchaka | 3874128 | 2016-02-02 18:45:17 +0200 | [diff] [blame] | 277 | |
| 278 | if(!PyTuple_CheckExact(fnargs)) |
| 279 | fnargs = PySequence_Tuple(fnargs); |
| 280 | else |
| 281 | Py_INCREF(fnargs); |
| 282 | if (fnargs == NULL) |
| 283 | return NULL; |
| 284 | |
| 285 | if (kw == Py_None) |
| 286 | kw = PyDict_New(); |
| 287 | else if(!PyDict_CheckExact(kw)) |
| 288 | kw = PyDict_Copy(kw); |
| 289 | else |
| 290 | Py_INCREF(kw); |
| 291 | if (kw == NULL) { |
| 292 | Py_DECREF(fnargs); |
| 293 | return NULL; |
| 294 | } |
| 295 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 296 | Py_INCREF(fn); |
Serhiy Storchaka | 3874128 | 2016-02-02 18:45:17 +0200 | [diff] [blame] | 297 | if (dict == Py_None) |
| 298 | dict = NULL; |
| 299 | else |
| 300 | Py_INCREF(dict); |
| 301 | |
Serhiy Storchaka | 864b63c | 2016-04-11 09:53:37 +0300 | [diff] [blame] | 302 | Py_SETREF(pto->fn, fn); |
| 303 | Py_SETREF(pto->args, fnargs); |
| 304 | Py_SETREF(pto->kw, kw); |
Serhiy Storchaka | 4884271 | 2016-04-06 09:45:48 +0300 | [diff] [blame] | 305 | Py_XSETREF(pto->dict, dict); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 306 | Py_RETURN_NONE; |
Jack Diederich | e0cbd69 | 2009-04-01 04:27:09 +0000 | [diff] [blame] | 307 | } |
| 308 | |
| 309 | static PyMethodDef partial_methods[] = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 310 | {"__reduce__", (PyCFunction)partial_reduce, METH_NOARGS}, |
Serhiy Storchaka | 19c4e0d | 2013-02-04 12:47:24 +0200 | [diff] [blame] | 311 | {"__setstate__", (PyCFunction)partial_setstate, METH_O}, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 312 | {NULL, NULL} /* sentinel */ |
Jack Diederich | e0cbd69 | 2009-04-01 04:27:09 +0000 | [diff] [blame] | 313 | }; |
| 314 | |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 315 | static PyTypeObject partial_type = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 316 | PyVarObject_HEAD_INIT(NULL, 0) |
| 317 | "functools.partial", /* tp_name */ |
| 318 | sizeof(partialobject), /* tp_basicsize */ |
| 319 | 0, /* tp_itemsize */ |
| 320 | /* methods */ |
| 321 | (destructor)partial_dealloc, /* tp_dealloc */ |
| 322 | 0, /* tp_print */ |
| 323 | 0, /* tp_getattr */ |
| 324 | 0, /* tp_setattr */ |
| 325 | 0, /* tp_reserved */ |
Alexander Belopolsky | 41e422a | 2010-12-01 20:05:49 +0000 | [diff] [blame] | 326 | (reprfunc)partial_repr, /* tp_repr */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 327 | 0, /* tp_as_number */ |
| 328 | 0, /* tp_as_sequence */ |
| 329 | 0, /* tp_as_mapping */ |
| 330 | 0, /* tp_hash */ |
| 331 | (ternaryfunc)partial_call, /* tp_call */ |
| 332 | 0, /* tp_str */ |
| 333 | PyObject_GenericGetAttr, /* tp_getattro */ |
| 334 | PyObject_GenericSetAttr, /* tp_setattro */ |
| 335 | 0, /* tp_as_buffer */ |
| 336 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC | |
| 337 | Py_TPFLAGS_BASETYPE, /* tp_flags */ |
| 338 | partial_doc, /* tp_doc */ |
| 339 | (traverseproc)partial_traverse, /* tp_traverse */ |
| 340 | 0, /* tp_clear */ |
| 341 | 0, /* tp_richcompare */ |
| 342 | offsetof(partialobject, weakreflist), /* tp_weaklistoffset */ |
| 343 | 0, /* tp_iter */ |
| 344 | 0, /* tp_iternext */ |
| 345 | partial_methods, /* tp_methods */ |
| 346 | partial_memberlist, /* tp_members */ |
| 347 | partial_getsetlist, /* tp_getset */ |
| 348 | 0, /* tp_base */ |
| 349 | 0, /* tp_dict */ |
| 350 | 0, /* tp_descr_get */ |
| 351 | 0, /* tp_descr_set */ |
| 352 | offsetof(partialobject, dict), /* tp_dictoffset */ |
| 353 | 0, /* tp_init */ |
| 354 | 0, /* tp_alloc */ |
| 355 | partial_new, /* tp_new */ |
| 356 | PyObject_GC_Del, /* tp_free */ |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 357 | }; |
| 358 | |
| 359 | |
Raymond Hettinger | 7ab9e22 | 2011-04-05 02:33:54 -0700 | [diff] [blame] | 360 | /* cmp_to_key ***************************************************************/ |
| 361 | |
| 362 | typedef struct { |
Victor Stinner | 446c8d5 | 2011-04-05 12:21:35 +0200 | [diff] [blame] | 363 | PyObject_HEAD |
Raymond Hettinger | 7ab9e22 | 2011-04-05 02:33:54 -0700 | [diff] [blame] | 364 | PyObject *cmp; |
| 365 | PyObject *object; |
| 366 | } keyobject; |
| 367 | |
| 368 | static void |
| 369 | keyobject_dealloc(keyobject *ko) |
| 370 | { |
| 371 | Py_DECREF(ko->cmp); |
| 372 | Py_XDECREF(ko->object); |
| 373 | PyObject_FREE(ko); |
| 374 | } |
| 375 | |
| 376 | static int |
| 377 | keyobject_traverse(keyobject *ko, visitproc visit, void *arg) |
| 378 | { |
| 379 | Py_VISIT(ko->cmp); |
| 380 | if (ko->object) |
| 381 | Py_VISIT(ko->object); |
| 382 | return 0; |
| 383 | } |
| 384 | |
Benjamin Peterson | 3bd9729 | 2011-04-05 17:25:14 -0500 | [diff] [blame] | 385 | static int |
| 386 | keyobject_clear(keyobject *ko) |
| 387 | { |
| 388 | Py_CLEAR(ko->cmp); |
| 389 | if (ko->object) |
| 390 | Py_CLEAR(ko->object); |
| 391 | return 0; |
| 392 | } |
| 393 | |
Raymond Hettinger | 7ab9e22 | 2011-04-05 02:33:54 -0700 | [diff] [blame] | 394 | static PyMemberDef keyobject_members[] = { |
| 395 | {"obj", T_OBJECT, |
| 396 | offsetof(keyobject, object), 0, |
| 397 | PyDoc_STR("Value wrapped by a key function.")}, |
| 398 | {NULL} |
| 399 | }; |
| 400 | |
| 401 | static PyObject * |
Raymond Hettinger | a563286 | 2011-04-09 12:57:00 -0700 | [diff] [blame] | 402 | keyobject_call(keyobject *ko, PyObject *args, PyObject *kwds); |
Raymond Hettinger | 7ab9e22 | 2011-04-05 02:33:54 -0700 | [diff] [blame] | 403 | |
| 404 | static PyObject * |
| 405 | keyobject_richcompare(PyObject *ko, PyObject *other, int op); |
| 406 | |
| 407 | static PyTypeObject keyobject_type = { |
| 408 | PyVarObject_HEAD_INIT(&PyType_Type, 0) |
| 409 | "functools.KeyWrapper", /* tp_name */ |
| 410 | sizeof(keyobject), /* tp_basicsize */ |
| 411 | 0, /* tp_itemsize */ |
| 412 | /* methods */ |
| 413 | (destructor)keyobject_dealloc, /* tp_dealloc */ |
| 414 | 0, /* tp_print */ |
| 415 | 0, /* tp_getattr */ |
| 416 | 0, /* tp_setattr */ |
| 417 | 0, /* tp_reserved */ |
| 418 | 0, /* tp_repr */ |
| 419 | 0, /* tp_as_number */ |
| 420 | 0, /* tp_as_sequence */ |
| 421 | 0, /* tp_as_mapping */ |
| 422 | 0, /* tp_hash */ |
| 423 | (ternaryfunc)keyobject_call, /* tp_call */ |
| 424 | 0, /* tp_str */ |
| 425 | PyObject_GenericGetAttr, /* tp_getattro */ |
| 426 | 0, /* tp_setattro */ |
| 427 | 0, /* tp_as_buffer */ |
| 428 | Py_TPFLAGS_DEFAULT, /* tp_flags */ |
| 429 | 0, /* tp_doc */ |
| 430 | (traverseproc)keyobject_traverse, /* tp_traverse */ |
Benjamin Peterson | 3bd9729 | 2011-04-05 17:25:14 -0500 | [diff] [blame] | 431 | (inquiry)keyobject_clear, /* tp_clear */ |
Raymond Hettinger | 7ab9e22 | 2011-04-05 02:33:54 -0700 | [diff] [blame] | 432 | keyobject_richcompare, /* tp_richcompare */ |
| 433 | 0, /* tp_weaklistoffset */ |
| 434 | 0, /* tp_iter */ |
| 435 | 0, /* tp_iternext */ |
| 436 | 0, /* tp_methods */ |
| 437 | keyobject_members, /* tp_members */ |
| 438 | 0, /* tp_getset */ |
| 439 | }; |
| 440 | |
| 441 | static PyObject * |
| 442 | keyobject_call(keyobject *ko, PyObject *args, PyObject *kwds) |
| 443 | { |
| 444 | PyObject *object; |
| 445 | keyobject *result; |
| 446 | static char *kwargs[] = {"obj", NULL}; |
| 447 | |
| 448 | if (!PyArg_ParseTupleAndKeywords(args, kwds, "O:K", kwargs, &object)) |
| 449 | return NULL; |
| 450 | result = PyObject_New(keyobject, &keyobject_type); |
| 451 | if (!result) |
| 452 | return NULL; |
| 453 | Py_INCREF(ko->cmp); |
| 454 | result->cmp = ko->cmp; |
| 455 | Py_INCREF(object); |
| 456 | result->object = object; |
| 457 | return (PyObject *)result; |
| 458 | } |
| 459 | |
| 460 | static PyObject * |
| 461 | keyobject_richcompare(PyObject *ko, PyObject *other, int op) |
| 462 | { |
| 463 | PyObject *res; |
Raymond Hettinger | 7ab9e22 | 2011-04-05 02:33:54 -0700 | [diff] [blame] | 464 | PyObject *x; |
| 465 | PyObject *y; |
| 466 | PyObject *compare; |
| 467 | PyObject *answer; |
| 468 | static PyObject *zero; |
Victor Stinner | f7a4c48 | 2016-08-19 18:52:35 +0200 | [diff] [blame] | 469 | PyObject* stack[2]; |
Raymond Hettinger | 7ab9e22 | 2011-04-05 02:33:54 -0700 | [diff] [blame] | 470 | |
| 471 | if (zero == NULL) { |
| 472 | zero = PyLong_FromLong(0); |
| 473 | if (!zero) |
| 474 | return NULL; |
| 475 | } |
| 476 | |
| 477 | if (Py_TYPE(other) != &keyobject_type){ |
| 478 | PyErr_Format(PyExc_TypeError, "other argument must be K instance"); |
| 479 | return NULL; |
| 480 | } |
| 481 | compare = ((keyobject *) ko)->cmp; |
| 482 | assert(compare != NULL); |
| 483 | x = ((keyobject *) ko)->object; |
| 484 | y = ((keyobject *) other)->object; |
| 485 | if (!x || !y){ |
| 486 | PyErr_Format(PyExc_AttributeError, "object"); |
| 487 | return NULL; |
| 488 | } |
| 489 | |
| 490 | /* Call the user's comparison function and translate the 3-way |
| 491 | * result into true or false (or error). |
| 492 | */ |
Victor Stinner | f7a4c48 | 2016-08-19 18:52:35 +0200 | [diff] [blame] | 493 | stack[0] = x; |
| 494 | stack[1] = y; |
Victor Stinner | 559bb6a | 2016-08-22 22:48:54 +0200 | [diff] [blame^] | 495 | res = _PyObject_FastCall(compare, stack, 2); |
Victor Stinner | f7a4c48 | 2016-08-19 18:52:35 +0200 | [diff] [blame] | 496 | if (res == NULL) { |
Raymond Hettinger | 7ab9e22 | 2011-04-05 02:33:54 -0700 | [diff] [blame] | 497 | return NULL; |
Victor Stinner | f7a4c48 | 2016-08-19 18:52:35 +0200 | [diff] [blame] | 498 | } |
| 499 | |
Raymond Hettinger | 7ab9e22 | 2011-04-05 02:33:54 -0700 | [diff] [blame] | 500 | answer = PyObject_RichCompare(res, zero, op); |
| 501 | Py_DECREF(res); |
| 502 | return answer; |
| 503 | } |
| 504 | |
| 505 | static PyObject * |
Victor Stinner | 446c8d5 | 2011-04-05 12:21:35 +0200 | [diff] [blame] | 506 | functools_cmp_to_key(PyObject *self, PyObject *args, PyObject *kwds) |
| 507 | { |
| 508 | PyObject *cmp; |
Raymond Hettinger | 7ab9e22 | 2011-04-05 02:33:54 -0700 | [diff] [blame] | 509 | static char *kwargs[] = {"mycmp", NULL}; |
Victor Stinner | 446c8d5 | 2011-04-05 12:21:35 +0200 | [diff] [blame] | 510 | keyobject *object; |
Raymond Hettinger | 7ab9e22 | 2011-04-05 02:33:54 -0700 | [diff] [blame] | 511 | |
| 512 | if (!PyArg_ParseTupleAndKeywords(args, kwds, "O:cmp_to_key", kwargs, &cmp)) |
| 513 | return NULL; |
Victor Stinner | 446c8d5 | 2011-04-05 12:21:35 +0200 | [diff] [blame] | 514 | object = PyObject_New(keyobject, &keyobject_type); |
Raymond Hettinger | 7ab9e22 | 2011-04-05 02:33:54 -0700 | [diff] [blame] | 515 | if (!object) |
| 516 | return NULL; |
| 517 | Py_INCREF(cmp); |
| 518 | object->cmp = cmp; |
| 519 | object->object = NULL; |
| 520 | return (PyObject *)object; |
| 521 | } |
| 522 | |
| 523 | PyDoc_STRVAR(functools_cmp_to_key_doc, |
| 524 | "Convert a cmp= function into a key= function."); |
| 525 | |
Guido van Rossum | 0919a1a | 2006-08-26 20:49:04 +0000 | [diff] [blame] | 526 | /* reduce (used to be a builtin) ********************************************/ |
| 527 | |
| 528 | static PyObject * |
| 529 | functools_reduce(PyObject *self, PyObject *args) |
| 530 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 531 | PyObject *seq, *func, *result = NULL, *it; |
Guido van Rossum | 0919a1a | 2006-08-26 20:49:04 +0000 | [diff] [blame] | 532 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 533 | if (!PyArg_UnpackTuple(args, "reduce", 2, 3, &func, &seq, &result)) |
| 534 | return NULL; |
| 535 | if (result != NULL) |
| 536 | Py_INCREF(result); |
Guido van Rossum | 0919a1a | 2006-08-26 20:49:04 +0000 | [diff] [blame] | 537 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 538 | it = PyObject_GetIter(seq); |
| 539 | if (it == NULL) { |
Alexander Belopolsky | e29e6bf | 2010-08-16 18:55:46 +0000 | [diff] [blame] | 540 | if (PyErr_ExceptionMatches(PyExc_TypeError)) |
| 541 | PyErr_SetString(PyExc_TypeError, |
| 542 | "reduce() arg 2 must support iteration"); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 543 | Py_XDECREF(result); |
| 544 | return NULL; |
| 545 | } |
Guido van Rossum | 0919a1a | 2006-08-26 20:49:04 +0000 | [diff] [blame] | 546 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 547 | if ((args = PyTuple_New(2)) == NULL) |
| 548 | goto Fail; |
Guido van Rossum | 0919a1a | 2006-08-26 20:49:04 +0000 | [diff] [blame] | 549 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 550 | for (;;) { |
| 551 | PyObject *op2; |
Guido van Rossum | 0919a1a | 2006-08-26 20:49:04 +0000 | [diff] [blame] | 552 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 553 | if (args->ob_refcnt > 1) { |
| 554 | Py_DECREF(args); |
| 555 | if ((args = PyTuple_New(2)) == NULL) |
| 556 | goto Fail; |
| 557 | } |
Guido van Rossum | 0919a1a | 2006-08-26 20:49:04 +0000 | [diff] [blame] | 558 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 559 | op2 = PyIter_Next(it); |
| 560 | if (op2 == NULL) { |
| 561 | if (PyErr_Occurred()) |
| 562 | goto Fail; |
| 563 | break; |
| 564 | } |
Guido van Rossum | 0919a1a | 2006-08-26 20:49:04 +0000 | [diff] [blame] | 565 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 566 | if (result == NULL) |
| 567 | result = op2; |
| 568 | else { |
| 569 | PyTuple_SetItem(args, 0, result); |
| 570 | PyTuple_SetItem(args, 1, op2); |
| 571 | if ((result = PyEval_CallObject(func, args)) == NULL) |
| 572 | goto Fail; |
| 573 | } |
| 574 | } |
Guido van Rossum | 0919a1a | 2006-08-26 20:49:04 +0000 | [diff] [blame] | 575 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 576 | Py_DECREF(args); |
Guido van Rossum | 0919a1a | 2006-08-26 20:49:04 +0000 | [diff] [blame] | 577 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 578 | if (result == NULL) |
| 579 | PyErr_SetString(PyExc_TypeError, |
| 580 | "reduce() of empty sequence with no initial value"); |
Guido van Rossum | 0919a1a | 2006-08-26 20:49:04 +0000 | [diff] [blame] | 581 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 582 | Py_DECREF(it); |
| 583 | return result; |
Guido van Rossum | 0919a1a | 2006-08-26 20:49:04 +0000 | [diff] [blame] | 584 | |
| 585 | Fail: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 586 | Py_XDECREF(args); |
| 587 | Py_XDECREF(result); |
| 588 | Py_DECREF(it); |
| 589 | return NULL; |
Guido van Rossum | 0919a1a | 2006-08-26 20:49:04 +0000 | [diff] [blame] | 590 | } |
| 591 | |
| 592 | PyDoc_STRVAR(functools_reduce_doc, |
| 593 | "reduce(function, sequence[, initial]) -> value\n\ |
| 594 | \n\ |
| 595 | Apply a function of two arguments cumulatively to the items of a sequence,\n\ |
| 596 | from left to right, so as to reduce the sequence to a single value.\n\ |
| 597 | For example, reduce(lambda x, y: x+y, [1, 2, 3, 4, 5]) calculates\n\ |
| 598 | ((((1+2)+3)+4)+5). If initial is present, it is placed before the items\n\ |
| 599 | of the sequence in the calculation, and serves as a default when the\n\ |
| 600 | sequence is empty."); |
| 601 | |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 602 | /* lru_cache object **********************************************************/ |
| 603 | |
| 604 | /* this object is used delimit args and keywords in the cache keys */ |
| 605 | static PyObject *kwd_mark = NULL; |
| 606 | |
| 607 | struct lru_list_elem; |
| 608 | struct lru_cache_object; |
| 609 | |
| 610 | typedef struct lru_list_elem { |
| 611 | PyObject_HEAD |
| 612 | struct lru_list_elem *prev, *next; /* borrowed links */ |
Serhiy Storchaka | b9d98d5 | 2015-10-02 12:47:11 +0300 | [diff] [blame] | 613 | Py_hash_t hash; |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 614 | PyObject *key, *result; |
| 615 | } lru_list_elem; |
| 616 | |
| 617 | static void |
| 618 | lru_list_elem_dealloc(lru_list_elem *link) |
| 619 | { |
| 620 | _PyObject_GC_UNTRACK(link); |
| 621 | Py_XDECREF(link->key); |
| 622 | Py_XDECREF(link->result); |
| 623 | PyObject_GC_Del(link); |
| 624 | } |
| 625 | |
| 626 | static int |
| 627 | lru_list_elem_traverse(lru_list_elem *link, visitproc visit, void *arg) |
| 628 | { |
| 629 | Py_VISIT(link->key); |
| 630 | Py_VISIT(link->result); |
| 631 | return 0; |
| 632 | } |
| 633 | |
| 634 | static int |
| 635 | lru_list_elem_clear(lru_list_elem *link) |
| 636 | { |
| 637 | Py_CLEAR(link->key); |
| 638 | Py_CLEAR(link->result); |
| 639 | return 0; |
| 640 | } |
| 641 | |
| 642 | static PyTypeObject lru_list_elem_type = { |
| 643 | PyVarObject_HEAD_INIT(&PyType_Type, 0) |
| 644 | "functools._lru_list_elem", /* tp_name */ |
| 645 | sizeof(lru_list_elem), /* tp_basicsize */ |
| 646 | 0, /* tp_itemsize */ |
| 647 | /* methods */ |
| 648 | (destructor)lru_list_elem_dealloc, /* tp_dealloc */ |
| 649 | 0, /* tp_print */ |
| 650 | 0, /* tp_getattr */ |
| 651 | 0, /* tp_setattr */ |
| 652 | 0, /* tp_reserved */ |
| 653 | 0, /* tp_repr */ |
| 654 | 0, /* tp_as_number */ |
| 655 | 0, /* tp_as_sequence */ |
| 656 | 0, /* tp_as_mapping */ |
| 657 | 0, /* tp_hash */ |
| 658 | 0, /* tp_call */ |
| 659 | 0, /* tp_str */ |
| 660 | 0, /* tp_getattro */ |
| 661 | 0, /* tp_setattro */ |
| 662 | 0, /* tp_as_buffer */ |
| 663 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags */ |
| 664 | 0, /* tp_doc */ |
| 665 | (traverseproc)lru_list_elem_traverse, /* tp_traverse */ |
| 666 | (inquiry)lru_list_elem_clear, /* tp_clear */ |
| 667 | }; |
| 668 | |
| 669 | |
| 670 | typedef PyObject *(*lru_cache_ternaryfunc)(struct lru_cache_object *, PyObject *, PyObject *); |
| 671 | |
| 672 | typedef struct lru_cache_object { |
| 673 | lru_list_elem root; /* includes PyObject_HEAD */ |
| 674 | Py_ssize_t maxsize; |
| 675 | PyObject *maxsize_O; |
| 676 | PyObject *func; |
| 677 | lru_cache_ternaryfunc wrapper; |
| 678 | PyObject *cache; |
| 679 | PyObject *cache_info_type; |
| 680 | Py_ssize_t misses, hits; |
| 681 | int typed; |
| 682 | PyObject *dict; |
| 683 | int full; |
| 684 | } lru_cache_object; |
| 685 | |
| 686 | static PyTypeObject lru_cache_type; |
| 687 | |
| 688 | static PyObject * |
| 689 | lru_cache_make_key(PyObject *args, PyObject *kwds, int typed) |
| 690 | { |
| 691 | PyObject *key, *sorted_items; |
| 692 | Py_ssize_t key_size, pos, key_pos; |
| 693 | |
| 694 | /* short path, key will match args anyway, which is a tuple */ |
| 695 | if (!typed && !kwds) { |
| 696 | Py_INCREF(args); |
| 697 | return args; |
| 698 | } |
| 699 | |
| 700 | if (kwds && PyDict_Size(kwds) > 0) { |
| 701 | sorted_items = PyDict_Items(kwds); |
| 702 | if (!sorted_items) |
| 703 | return NULL; |
| 704 | if (PyList_Sort(sorted_items) < 0) { |
| 705 | Py_DECREF(sorted_items); |
| 706 | return NULL; |
| 707 | } |
| 708 | } else |
| 709 | sorted_items = NULL; |
| 710 | |
| 711 | key_size = PyTuple_GET_SIZE(args); |
| 712 | if (sorted_items) |
| 713 | key_size += PyList_GET_SIZE(sorted_items); |
| 714 | if (typed) |
| 715 | key_size *= 2; |
| 716 | if (sorted_items) |
| 717 | key_size++; |
| 718 | |
| 719 | key = PyTuple_New(key_size); |
| 720 | if (key == NULL) |
| 721 | goto done; |
| 722 | |
| 723 | key_pos = 0; |
| 724 | for (pos = 0; pos < PyTuple_GET_SIZE(args); ++pos) { |
| 725 | PyObject *item = PyTuple_GET_ITEM(args, pos); |
| 726 | Py_INCREF(item); |
| 727 | PyTuple_SET_ITEM(key, key_pos++, item); |
| 728 | } |
| 729 | if (sorted_items) { |
| 730 | Py_INCREF(kwd_mark); |
| 731 | PyTuple_SET_ITEM(key, key_pos++, kwd_mark); |
| 732 | for (pos = 0; pos < PyList_GET_SIZE(sorted_items); ++pos) { |
| 733 | PyObject *item = PyList_GET_ITEM(sorted_items, pos); |
| 734 | Py_INCREF(item); |
| 735 | PyTuple_SET_ITEM(key, key_pos++, item); |
| 736 | } |
| 737 | } |
| 738 | if (typed) { |
| 739 | for (pos = 0; pos < PyTuple_GET_SIZE(args); ++pos) { |
| 740 | PyObject *item = (PyObject *)Py_TYPE(PyTuple_GET_ITEM(args, pos)); |
| 741 | Py_INCREF(item); |
| 742 | PyTuple_SET_ITEM(key, key_pos++, item); |
| 743 | } |
| 744 | if (sorted_items) { |
| 745 | for (pos = 0; pos < PyList_GET_SIZE(sorted_items); ++pos) { |
| 746 | PyObject *tp_items = PyList_GET_ITEM(sorted_items, pos); |
| 747 | PyObject *item = (PyObject *)Py_TYPE(PyTuple_GET_ITEM(tp_items, 1)); |
| 748 | Py_INCREF(item); |
| 749 | PyTuple_SET_ITEM(key, key_pos++, item); |
| 750 | } |
| 751 | } |
| 752 | } |
| 753 | assert(key_pos == key_size); |
| 754 | |
| 755 | done: |
| 756 | if (sorted_items) |
| 757 | Py_DECREF(sorted_items); |
| 758 | return key; |
| 759 | } |
| 760 | |
| 761 | static PyObject * |
| 762 | uncached_lru_cache_wrapper(lru_cache_object *self, PyObject *args, PyObject *kwds) |
| 763 | { |
| 764 | PyObject *result = PyObject_Call(self->func, args, kwds); |
| 765 | if (!result) |
| 766 | return NULL; |
| 767 | self->misses++; |
| 768 | return result; |
| 769 | } |
| 770 | |
| 771 | static PyObject * |
| 772 | infinite_lru_cache_wrapper(lru_cache_object *self, PyObject *args, PyObject *kwds) |
| 773 | { |
| 774 | PyObject *result; |
Serhiy Storchaka | b9d98d5 | 2015-10-02 12:47:11 +0300 | [diff] [blame] | 775 | Py_hash_t hash; |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 776 | PyObject *key = lru_cache_make_key(args, kwds, self->typed); |
| 777 | if (!key) |
| 778 | return NULL; |
Serhiy Storchaka | b9d98d5 | 2015-10-02 12:47:11 +0300 | [diff] [blame] | 779 | hash = PyObject_Hash(key); |
| 780 | if (hash == -1) |
| 781 | return NULL; |
| 782 | result = _PyDict_GetItem_KnownHash(self->cache, key, hash); |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 783 | if (result) { |
| 784 | Py_INCREF(result); |
| 785 | self->hits++; |
| 786 | Py_DECREF(key); |
| 787 | return result; |
| 788 | } |
| 789 | if (PyErr_Occurred()) { |
| 790 | Py_DECREF(key); |
| 791 | return NULL; |
| 792 | } |
| 793 | result = PyObject_Call(self->func, args, kwds); |
| 794 | if (!result) { |
| 795 | Py_DECREF(key); |
| 796 | return NULL; |
| 797 | } |
Serhiy Storchaka | b9d98d5 | 2015-10-02 12:47:11 +0300 | [diff] [blame] | 798 | if (_PyDict_SetItem_KnownHash(self->cache, key, result, hash) < 0) { |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 799 | Py_DECREF(result); |
| 800 | Py_DECREF(key); |
| 801 | return NULL; |
| 802 | } |
| 803 | Py_DECREF(key); |
| 804 | self->misses++; |
| 805 | return result; |
| 806 | } |
| 807 | |
| 808 | static void |
| 809 | lru_cache_extricate_link(lru_list_elem *link) |
| 810 | { |
| 811 | link->prev->next = link->next; |
| 812 | link->next->prev = link->prev; |
| 813 | } |
| 814 | |
| 815 | static void |
| 816 | lru_cache_append_link(lru_cache_object *self, lru_list_elem *link) |
| 817 | { |
| 818 | lru_list_elem *root = &self->root; |
| 819 | lru_list_elem *last = root->prev; |
| 820 | last->next = root->prev = link; |
| 821 | link->prev = last; |
| 822 | link->next = root; |
| 823 | } |
| 824 | |
| 825 | static PyObject * |
| 826 | bounded_lru_cache_wrapper(lru_cache_object *self, PyObject *args, PyObject *kwds) |
| 827 | { |
| 828 | lru_list_elem *link; |
| 829 | PyObject *key, *result; |
Serhiy Storchaka | b9d98d5 | 2015-10-02 12:47:11 +0300 | [diff] [blame] | 830 | Py_hash_t hash; |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 831 | |
| 832 | key = lru_cache_make_key(args, kwds, self->typed); |
| 833 | if (!key) |
| 834 | return NULL; |
Serhiy Storchaka | b9d98d5 | 2015-10-02 12:47:11 +0300 | [diff] [blame] | 835 | hash = PyObject_Hash(key); |
| 836 | if (hash == -1) |
| 837 | return NULL; |
| 838 | link = (lru_list_elem *)_PyDict_GetItem_KnownHash(self->cache, key, hash); |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 839 | if (link) { |
| 840 | lru_cache_extricate_link(link); |
| 841 | lru_cache_append_link(self, link); |
| 842 | self->hits++; |
| 843 | result = link->result; |
| 844 | Py_INCREF(result); |
| 845 | Py_DECREF(key); |
| 846 | return result; |
| 847 | } |
| 848 | if (PyErr_Occurred()) { |
| 849 | Py_DECREF(key); |
| 850 | return NULL; |
| 851 | } |
| 852 | result = PyObject_Call(self->func, args, kwds); |
| 853 | if (!result) { |
| 854 | Py_DECREF(key); |
| 855 | return NULL; |
| 856 | } |
| 857 | if (self->full && self->root.next != &self->root) { |
| 858 | /* Use the oldest item to store the new key and result. */ |
| 859 | PyObject *oldkey, *oldresult; |
| 860 | /* Extricate the oldest item. */ |
| 861 | link = self->root.next; |
| 862 | lru_cache_extricate_link(link); |
| 863 | /* Remove it from the cache. |
| 864 | The cache dict holds one reference to the link, |
| 865 | and the linked list holds yet one reference to it. */ |
Serhiy Storchaka | b9d98d5 | 2015-10-02 12:47:11 +0300 | [diff] [blame] | 866 | if (_PyDict_DelItem_KnownHash(self->cache, link->key, |
| 867 | link->hash) < 0) { |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 868 | lru_cache_append_link(self, link); |
| 869 | Py_DECREF(key); |
| 870 | Py_DECREF(result); |
| 871 | return NULL; |
| 872 | } |
| 873 | /* Keep a reference to the old key and old result to |
| 874 | prevent their ref counts from going to zero during the |
| 875 | update. That will prevent potentially arbitrary object |
| 876 | clean-up code (i.e. __del__) from running while we're |
| 877 | still adjusting the links. */ |
| 878 | oldkey = link->key; |
| 879 | oldresult = link->result; |
| 880 | |
Serhiy Storchaka | b9d98d5 | 2015-10-02 12:47:11 +0300 | [diff] [blame] | 881 | link->hash = hash; |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 882 | link->key = key; |
| 883 | link->result = result; |
Serhiy Storchaka | b9d98d5 | 2015-10-02 12:47:11 +0300 | [diff] [blame] | 884 | if (_PyDict_SetItem_KnownHash(self->cache, key, (PyObject *)link, |
| 885 | hash) < 0) { |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 886 | Py_DECREF(link); |
| 887 | Py_DECREF(oldkey); |
| 888 | Py_DECREF(oldresult); |
| 889 | return NULL; |
| 890 | } |
| 891 | lru_cache_append_link(self, link); |
| 892 | Py_INCREF(result); /* for return */ |
| 893 | Py_DECREF(oldkey); |
| 894 | Py_DECREF(oldresult); |
| 895 | } else { |
| 896 | /* Put result in a new link at the front of the queue. */ |
| 897 | link = (lru_list_elem *)PyObject_GC_New(lru_list_elem, |
| 898 | &lru_list_elem_type); |
| 899 | if (link == NULL) { |
| 900 | Py_DECREF(key); |
| 901 | Py_DECREF(result); |
| 902 | return NULL; |
| 903 | } |
| 904 | |
Serhiy Storchaka | b9d98d5 | 2015-10-02 12:47:11 +0300 | [diff] [blame] | 905 | link->hash = hash; |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 906 | link->key = key; |
| 907 | link->result = result; |
| 908 | _PyObject_GC_TRACK(link); |
Serhiy Storchaka | b9d98d5 | 2015-10-02 12:47:11 +0300 | [diff] [blame] | 909 | if (_PyDict_SetItem_KnownHash(self->cache, key, (PyObject *)link, |
| 910 | hash) < 0) { |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 911 | Py_DECREF(link); |
| 912 | return NULL; |
| 913 | } |
| 914 | lru_cache_append_link(self, link); |
| 915 | Py_INCREF(result); /* for return */ |
| 916 | self->full = (PyDict_Size(self->cache) >= self->maxsize); |
| 917 | } |
| 918 | self->misses++; |
| 919 | return result; |
| 920 | } |
| 921 | |
| 922 | static PyObject * |
| 923 | lru_cache_new(PyTypeObject *type, PyObject *args, PyObject *kw) |
| 924 | { |
Serhiy Storchaka | 374164c | 2015-07-25 12:10:21 +0300 | [diff] [blame] | 925 | PyObject *func, *maxsize_O, *cache_info_type, *cachedict; |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 926 | int typed; |
| 927 | lru_cache_object *obj; |
| 928 | Py_ssize_t maxsize; |
| 929 | PyObject *(*wrapper)(lru_cache_object *, PyObject *, PyObject *); |
| 930 | static char *keywords[] = {"user_function", "maxsize", "typed", |
| 931 | "cache_info_type", NULL}; |
| 932 | |
| 933 | if (!PyArg_ParseTupleAndKeywords(args, kw, "OOpO:lru_cache", keywords, |
| 934 | &func, &maxsize_O, &typed, |
| 935 | &cache_info_type)) { |
| 936 | return NULL; |
| 937 | } |
| 938 | |
| 939 | if (!PyCallable_Check(func)) { |
| 940 | PyErr_SetString(PyExc_TypeError, |
| 941 | "the first argument must be callable"); |
| 942 | return NULL; |
| 943 | } |
| 944 | |
| 945 | /* select the caching function, and make/inc maxsize_O */ |
| 946 | if (maxsize_O == Py_None) { |
| 947 | wrapper = infinite_lru_cache_wrapper; |
| 948 | /* use this only to initialize lru_cache_object attribute maxsize */ |
| 949 | maxsize = -1; |
| 950 | } else if (PyIndex_Check(maxsize_O)) { |
| 951 | maxsize = PyNumber_AsSsize_t(maxsize_O, PyExc_OverflowError); |
| 952 | if (maxsize == -1 && PyErr_Occurred()) |
| 953 | return NULL; |
| 954 | if (maxsize == 0) |
| 955 | wrapper = uncached_lru_cache_wrapper; |
| 956 | else |
| 957 | wrapper = bounded_lru_cache_wrapper; |
| 958 | } else { |
| 959 | PyErr_SetString(PyExc_TypeError, "maxsize should be integer or None"); |
| 960 | return NULL; |
| 961 | } |
| 962 | |
Serhiy Storchaka | 374164c | 2015-07-25 12:10:21 +0300 | [diff] [blame] | 963 | if (!(cachedict = PyDict_New())) |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 964 | return NULL; |
| 965 | |
Serhiy Storchaka | 374164c | 2015-07-25 12:10:21 +0300 | [diff] [blame] | 966 | obj = (lru_cache_object *)type->tp_alloc(type, 0); |
| 967 | if (obj == NULL) { |
| 968 | Py_DECREF(cachedict); |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 969 | return NULL; |
| 970 | } |
| 971 | |
Serhiy Storchaka | 374164c | 2015-07-25 12:10:21 +0300 | [diff] [blame] | 972 | obj->cache = cachedict; |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 973 | obj->root.prev = &obj->root; |
| 974 | obj->root.next = &obj->root; |
| 975 | obj->maxsize = maxsize; |
| 976 | Py_INCREF(maxsize_O); |
| 977 | obj->maxsize_O = maxsize_O; |
| 978 | Py_INCREF(func); |
| 979 | obj->func = func; |
| 980 | obj->wrapper = wrapper; |
| 981 | obj->misses = obj->hits = 0; |
| 982 | obj->typed = typed; |
| 983 | Py_INCREF(cache_info_type); |
| 984 | obj->cache_info_type = cache_info_type; |
| 985 | |
| 986 | return (PyObject *)obj; |
| 987 | } |
| 988 | |
| 989 | static lru_list_elem * |
| 990 | lru_cache_unlink_list(lru_cache_object *self) |
| 991 | { |
| 992 | lru_list_elem *root = &self->root; |
| 993 | lru_list_elem *link = root->next; |
| 994 | if (link == root) |
| 995 | return NULL; |
| 996 | root->prev->next = NULL; |
| 997 | root->next = root->prev = root; |
| 998 | return link; |
| 999 | } |
| 1000 | |
| 1001 | static void |
| 1002 | lru_cache_clear_list(lru_list_elem *link) |
| 1003 | { |
| 1004 | while (link != NULL) { |
| 1005 | lru_list_elem *next = link->next; |
| 1006 | Py_DECREF(link); |
| 1007 | link = next; |
| 1008 | } |
| 1009 | } |
| 1010 | |
| 1011 | static void |
| 1012 | lru_cache_dealloc(lru_cache_object *obj) |
| 1013 | { |
| 1014 | lru_list_elem *list = lru_cache_unlink_list(obj); |
| 1015 | Py_XDECREF(obj->maxsize_O); |
| 1016 | Py_XDECREF(obj->func); |
| 1017 | Py_XDECREF(obj->cache); |
| 1018 | Py_XDECREF(obj->dict); |
| 1019 | Py_XDECREF(obj->cache_info_type); |
| 1020 | lru_cache_clear_list(list); |
| 1021 | Py_TYPE(obj)->tp_free(obj); |
| 1022 | } |
| 1023 | |
| 1024 | static PyObject * |
| 1025 | lru_cache_call(lru_cache_object *self, PyObject *args, PyObject *kwds) |
| 1026 | { |
| 1027 | return self->wrapper(self, args, kwds); |
| 1028 | } |
| 1029 | |
| 1030 | static PyObject * |
Serhiy Storchaka | e7070f0 | 2015-06-08 11:19:24 +0300 | [diff] [blame] | 1031 | lru_cache_descr_get(PyObject *self, PyObject *obj, PyObject *type) |
| 1032 | { |
| 1033 | if (obj == Py_None || obj == NULL) { |
| 1034 | Py_INCREF(self); |
| 1035 | return self; |
| 1036 | } |
| 1037 | return PyMethod_New(self, obj); |
| 1038 | } |
| 1039 | |
| 1040 | static PyObject * |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 1041 | lru_cache_cache_info(lru_cache_object *self, PyObject *unused) |
| 1042 | { |
| 1043 | return PyObject_CallFunction(self->cache_info_type, "nnOn", |
| 1044 | self->hits, self->misses, self->maxsize_O, |
| 1045 | PyDict_Size(self->cache)); |
| 1046 | } |
| 1047 | |
| 1048 | static PyObject * |
| 1049 | lru_cache_cache_clear(lru_cache_object *self, PyObject *unused) |
| 1050 | { |
| 1051 | lru_list_elem *list = lru_cache_unlink_list(self); |
| 1052 | self->hits = self->misses = 0; |
| 1053 | self->full = 0; |
| 1054 | PyDict_Clear(self->cache); |
| 1055 | lru_cache_clear_list(list); |
| 1056 | Py_RETURN_NONE; |
| 1057 | } |
| 1058 | |
Serhiy Storchaka | 45120f2 | 2015-10-24 09:49:56 +0300 | [diff] [blame] | 1059 | static PyObject * |
| 1060 | lru_cache_reduce(PyObject *self, PyObject *unused) |
| 1061 | { |
| 1062 | return PyObject_GetAttrString(self, "__qualname__"); |
| 1063 | } |
| 1064 | |
Serhiy Storchaka | e4d65e3 | 2015-12-28 23:58:07 +0200 | [diff] [blame] | 1065 | static PyObject * |
| 1066 | lru_cache_copy(PyObject *self, PyObject *unused) |
| 1067 | { |
| 1068 | Py_INCREF(self); |
| 1069 | return self; |
| 1070 | } |
| 1071 | |
| 1072 | static PyObject * |
| 1073 | lru_cache_deepcopy(PyObject *self, PyObject *unused) |
| 1074 | { |
| 1075 | Py_INCREF(self); |
| 1076 | return self; |
| 1077 | } |
| 1078 | |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 1079 | static int |
| 1080 | lru_cache_tp_traverse(lru_cache_object *self, visitproc visit, void *arg) |
| 1081 | { |
| 1082 | lru_list_elem *link = self->root.next; |
| 1083 | while (link != &self->root) { |
| 1084 | lru_list_elem *next = link->next; |
| 1085 | Py_VISIT(link); |
| 1086 | link = next; |
| 1087 | } |
| 1088 | Py_VISIT(self->maxsize_O); |
| 1089 | Py_VISIT(self->func); |
| 1090 | Py_VISIT(self->cache); |
| 1091 | Py_VISIT(self->cache_info_type); |
| 1092 | Py_VISIT(self->dict); |
| 1093 | return 0; |
| 1094 | } |
| 1095 | |
| 1096 | static int |
| 1097 | lru_cache_tp_clear(lru_cache_object *self) |
| 1098 | { |
| 1099 | lru_list_elem *list = lru_cache_unlink_list(self); |
| 1100 | Py_CLEAR(self->maxsize_O); |
| 1101 | Py_CLEAR(self->func); |
| 1102 | Py_CLEAR(self->cache); |
| 1103 | Py_CLEAR(self->cache_info_type); |
| 1104 | Py_CLEAR(self->dict); |
| 1105 | lru_cache_clear_list(list); |
| 1106 | return 0; |
| 1107 | } |
| 1108 | |
| 1109 | |
| 1110 | PyDoc_STRVAR(lru_cache_doc, |
| 1111 | "Create a cached callable that wraps another function.\n\ |
| 1112 | \n\ |
| 1113 | user_function: the function being cached\n\ |
| 1114 | \n\ |
| 1115 | maxsize: 0 for no caching\n\ |
| 1116 | None for unlimited cache size\n\ |
| 1117 | n for a bounded cache\n\ |
| 1118 | \n\ |
| 1119 | typed: False cache f(3) and f(3.0) as identical calls\n\ |
| 1120 | True cache f(3) and f(3.0) as distinct calls\n\ |
| 1121 | \n\ |
| 1122 | cache_info_type: namedtuple class with the fields:\n\ |
| 1123 | hits misses currsize maxsize\n" |
| 1124 | ); |
| 1125 | |
| 1126 | static PyMethodDef lru_cache_methods[] = { |
| 1127 | {"cache_info", (PyCFunction)lru_cache_cache_info, METH_NOARGS}, |
| 1128 | {"cache_clear", (PyCFunction)lru_cache_cache_clear, METH_NOARGS}, |
Serhiy Storchaka | 45120f2 | 2015-10-24 09:49:56 +0300 | [diff] [blame] | 1129 | {"__reduce__", (PyCFunction)lru_cache_reduce, METH_NOARGS}, |
Serhiy Storchaka | e4d65e3 | 2015-12-28 23:58:07 +0200 | [diff] [blame] | 1130 | {"__copy__", (PyCFunction)lru_cache_copy, METH_VARARGS}, |
| 1131 | {"__deepcopy__", (PyCFunction)lru_cache_deepcopy, METH_VARARGS}, |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 1132 | {NULL} |
| 1133 | }; |
| 1134 | |
| 1135 | static PyGetSetDef lru_cache_getsetlist[] = { |
| 1136 | {"__dict__", PyObject_GenericGetDict, PyObject_GenericSetDict}, |
| 1137 | {NULL} |
| 1138 | }; |
| 1139 | |
| 1140 | static PyTypeObject lru_cache_type = { |
| 1141 | PyVarObject_HEAD_INIT(NULL, 0) |
| 1142 | "functools._lru_cache_wrapper", /* tp_name */ |
| 1143 | sizeof(lru_cache_object), /* tp_basicsize */ |
| 1144 | 0, /* tp_itemsize */ |
| 1145 | /* methods */ |
| 1146 | (destructor)lru_cache_dealloc, /* tp_dealloc */ |
| 1147 | 0, /* tp_print */ |
| 1148 | 0, /* tp_getattr */ |
| 1149 | 0, /* tp_setattr */ |
| 1150 | 0, /* tp_reserved */ |
| 1151 | 0, /* tp_repr */ |
| 1152 | 0, /* tp_as_number */ |
| 1153 | 0, /* tp_as_sequence */ |
| 1154 | 0, /* tp_as_mapping */ |
| 1155 | 0, /* tp_hash */ |
| 1156 | (ternaryfunc)lru_cache_call, /* tp_call */ |
| 1157 | 0, /* tp_str */ |
| 1158 | 0, /* tp_getattro */ |
| 1159 | 0, /* tp_setattro */ |
| 1160 | 0, /* tp_as_buffer */ |
| 1161 | Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE|Py_TPFLAGS_HAVE_GC, |
| 1162 | /* tp_flags */ |
| 1163 | lru_cache_doc, /* tp_doc */ |
| 1164 | (traverseproc)lru_cache_tp_traverse,/* tp_traverse */ |
| 1165 | (inquiry)lru_cache_tp_clear, /* tp_clear */ |
| 1166 | 0, /* tp_richcompare */ |
| 1167 | 0, /* tp_weaklistoffset */ |
| 1168 | 0, /* tp_iter */ |
| 1169 | 0, /* tp_iternext */ |
| 1170 | lru_cache_methods, /* tp_methods */ |
| 1171 | 0, /* tp_members */ |
| 1172 | lru_cache_getsetlist, /* tp_getset */ |
| 1173 | 0, /* tp_base */ |
| 1174 | 0, /* tp_dict */ |
Serhiy Storchaka | e7070f0 | 2015-06-08 11:19:24 +0300 | [diff] [blame] | 1175 | lru_cache_descr_get, /* tp_descr_get */ |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 1176 | 0, /* tp_descr_set */ |
| 1177 | offsetof(lru_cache_object, dict), /* tp_dictoffset */ |
| 1178 | 0, /* tp_init */ |
| 1179 | 0, /* tp_alloc */ |
| 1180 | lru_cache_new, /* tp_new */ |
| 1181 | }; |
| 1182 | |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 1183 | /* module level code ********************************************************/ |
| 1184 | |
| 1185 | PyDoc_STRVAR(module_doc, |
Thomas Wouters | 4d70c3d | 2006-06-08 14:42:34 +0000 | [diff] [blame] | 1186 | "Tools that operate on functions."); |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 1187 | |
| 1188 | static PyMethodDef module_methods[] = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1189 | {"reduce", functools_reduce, METH_VARARGS, functools_reduce_doc}, |
Victor Stinner | 446c8d5 | 2011-04-05 12:21:35 +0200 | [diff] [blame] | 1190 | {"cmp_to_key", (PyCFunction)functools_cmp_to_key, |
| 1191 | METH_VARARGS | METH_KEYWORDS, functools_cmp_to_key_doc}, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1192 | {NULL, NULL} /* sentinel */ |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 1193 | }; |
| 1194 | |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 1195 | static void |
| 1196 | module_free(void *m) |
| 1197 | { |
| 1198 | Py_CLEAR(kwd_mark); |
| 1199 | } |
Martin v. Löwis | 1a21451 | 2008-06-11 05:26:20 +0000 | [diff] [blame] | 1200 | |
| 1201 | static struct PyModuleDef _functoolsmodule = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1202 | PyModuleDef_HEAD_INIT, |
| 1203 | "_functools", |
| 1204 | module_doc, |
| 1205 | -1, |
| 1206 | module_methods, |
| 1207 | NULL, |
| 1208 | NULL, |
| 1209 | NULL, |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 1210 | module_free, |
Martin v. Löwis | 1a21451 | 2008-06-11 05:26:20 +0000 | [diff] [blame] | 1211 | }; |
| 1212 | |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 1213 | PyMODINIT_FUNC |
Martin v. Löwis | 1a21451 | 2008-06-11 05:26:20 +0000 | [diff] [blame] | 1214 | PyInit__functools(void) |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 1215 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1216 | int i; |
| 1217 | PyObject *m; |
| 1218 | char *name; |
| 1219 | PyTypeObject *typelist[] = { |
| 1220 | &partial_type, |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 1221 | &lru_cache_type, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1222 | NULL |
| 1223 | }; |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 1224 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1225 | m = PyModule_Create(&_functoolsmodule); |
| 1226 | if (m == NULL) |
| 1227 | return NULL; |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 1228 | |
Serhiy Storchaka | 46c5611 | 2015-05-24 21:53:49 +0300 | [diff] [blame] | 1229 | kwd_mark = PyObject_CallObject((PyObject *)&PyBaseObject_Type, NULL); |
| 1230 | if (!kwd_mark) { |
| 1231 | Py_DECREF(m); |
| 1232 | return NULL; |
| 1233 | } |
| 1234 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1235 | for (i=0 ; typelist[i] != NULL ; i++) { |
| 1236 | if (PyType_Ready(typelist[i]) < 0) { |
| 1237 | Py_DECREF(m); |
| 1238 | return NULL; |
| 1239 | } |
| 1240 | name = strchr(typelist[i]->tp_name, '.'); |
| 1241 | assert (name != NULL); |
| 1242 | Py_INCREF(typelist[i]); |
| 1243 | PyModule_AddObject(m, name+1, (PyObject *)typelist[i]); |
| 1244 | } |
| 1245 | return m; |
Raymond Hettinger | 9c323f8 | 2005-02-28 19:39:44 +0000 | [diff] [blame] | 1246 | } |