Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1 | #include "Python.h" |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2 | |
| 3 | #include <ffi.h> |
| 4 | #ifdef MS_WIN32 |
| 5 | #include <windows.h> |
| 6 | #endif |
| 7 | #include "ctypes.h" |
| 8 | |
Benjamin Peterson | b173f78 | 2009-05-05 22:31:58 +0000 | [diff] [blame] | 9 | |
| 10 | #define CTYPES_CFIELD_CAPSULE_NAME_PYMEM "_ctypes/cfield.c pymem" |
| 11 | |
Georg Brandl | 2a53139 | 2010-10-16 20:33:11 +0000 | [diff] [blame] | 12 | #if Py_UNICODE_SIZE != SIZEOF_WCHAR_T |
Benjamin Peterson | b173f78 | 2009-05-05 22:31:58 +0000 | [diff] [blame] | 13 | static void pymem_destructor(PyObject *ptr) |
| 14 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 15 | void *p = PyCapsule_GetPointer(ptr, CTYPES_CFIELD_CAPSULE_NAME_PYMEM); |
| 16 | if (p) { |
| 17 | PyMem_Free(p); |
| 18 | } |
Benjamin Peterson | b173f78 | 2009-05-05 22:31:58 +0000 | [diff] [blame] | 19 | } |
Georg Brandl | 2a53139 | 2010-10-16 20:33:11 +0000 | [diff] [blame] | 20 | #endif |
Benjamin Peterson | b173f78 | 2009-05-05 22:31:58 +0000 | [diff] [blame] | 21 | |
| 22 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 23 | /******************************************************************/ |
| 24 | /* |
Thomas Heller | 34596a9 | 2009-04-24 20:50:00 +0000 | [diff] [blame] | 25 | PyCField_Type |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 26 | */ |
| 27 | static PyObject * |
Thomas Heller | 34596a9 | 2009-04-24 20:50:00 +0000 | [diff] [blame] | 28 | PyCField_new(PyTypeObject *type, PyObject *args, PyObject *kwds) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 29 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 30 | CFieldObject *obj; |
| 31 | obj = (CFieldObject *)type->tp_alloc(type, 0); |
| 32 | return (PyObject *)obj; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 33 | } |
| 34 | |
| 35 | /* |
| 36 | * Expects the size, index and offset for the current field in *psize and |
| 37 | * *poffset, stores the total size so far in *psize, the offset for the next |
| 38 | * field in *poffset, the alignment requirements for the current field in |
| 39 | * *palign, and returns a field desriptor for this field. |
| 40 | */ |
| 41 | /* |
| 42 | * bitfields extension: |
| 43 | * bitsize != 0: this is a bit field. |
| 44 | * pbitofs points to the current bit offset, this will be updated. |
| 45 | * prev_desc points to the type of the previous bitfield, if any. |
| 46 | */ |
| 47 | PyObject * |
Thomas Heller | 34596a9 | 2009-04-24 20:50:00 +0000 | [diff] [blame] | 48 | PyCField_FromDesc(PyObject *desc, Py_ssize_t index, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 49 | Py_ssize_t *pfield_size, int bitsize, int *pbitofs, |
| 50 | Py_ssize_t *psize, Py_ssize_t *poffset, Py_ssize_t *palign, |
| 51 | int pack, int big_endian) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 52 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 53 | CFieldObject *self; |
| 54 | PyObject *proto; |
Brett Cannon | b94767f | 2011-02-22 20:15:44 +0000 | [diff] [blame^] | 55 | Py_ssize_t size, align; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 56 | SETFUNC setfunc = NULL; |
| 57 | GETFUNC getfunc = NULL; |
| 58 | StgDictObject *dict; |
| 59 | int fieldtype; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 60 | #define NO_BITFIELD 0 |
| 61 | #define NEW_BITFIELD 1 |
| 62 | #define CONT_BITFIELD 2 |
| 63 | #define EXPAND_BITFIELD 3 |
| 64 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 65 | self = (CFieldObject *)PyObject_CallObject((PyObject *)&PyCField_Type, |
| 66 | NULL); |
| 67 | if (self == NULL) |
| 68 | return NULL; |
| 69 | dict = PyType_stgdict(desc); |
| 70 | if (!dict) { |
| 71 | PyErr_SetString(PyExc_TypeError, |
| 72 | "has no _stginfo_"); |
| 73 | Py_DECREF(self); |
| 74 | return NULL; |
| 75 | } |
| 76 | if (bitsize /* this is a bitfield request */ |
| 77 | && *pfield_size /* we have a bitfield open */ |
Thomas Heller | 28acc6c | 2008-09-29 20:03:53 +0000 | [diff] [blame] | 78 | #ifdef MS_WIN32 |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 79 | /* MSVC, GCC with -mms-bitfields */ |
| 80 | && dict->size * 8 == *pfield_size |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 81 | #else |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 82 | /* GCC */ |
| 83 | && dict->size * 8 <= *pfield_size |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 84 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 85 | && (*pbitofs + bitsize) <= *pfield_size) { |
| 86 | /* continue bit field */ |
| 87 | fieldtype = CONT_BITFIELD; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 88 | #ifndef MS_WIN32 |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 89 | } else if (bitsize /* this is a bitfield request */ |
| 90 | && *pfield_size /* we have a bitfield open */ |
| 91 | && dict->size * 8 >= *pfield_size |
| 92 | && (*pbitofs + bitsize) <= dict->size * 8) { |
| 93 | /* expand bit field */ |
| 94 | fieldtype = EXPAND_BITFIELD; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 95 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 96 | } else if (bitsize) { |
| 97 | /* start new bitfield */ |
| 98 | fieldtype = NEW_BITFIELD; |
| 99 | *pbitofs = 0; |
| 100 | *pfield_size = dict->size * 8; |
| 101 | } else { |
| 102 | /* not a bit field */ |
| 103 | fieldtype = NO_BITFIELD; |
| 104 | *pbitofs = 0; |
| 105 | *pfield_size = 0; |
| 106 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 107 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 108 | size = dict->size; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 109 | proto = desc; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 110 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 111 | /* Field descriptors for 'c_char * n' are be scpecial cased to |
| 112 | return a Python string instead of an Array object instance... |
| 113 | */ |
| 114 | if (PyCArrayTypeObject_Check(proto)) { |
| 115 | StgDictObject *adict = PyType_stgdict(proto); |
| 116 | StgDictObject *idict; |
| 117 | if (adict && adict->proto) { |
| 118 | idict = PyType_stgdict(adict->proto); |
| 119 | if (!idict) { |
| 120 | PyErr_SetString(PyExc_TypeError, |
| 121 | "has no _stginfo_"); |
| 122 | Py_DECREF(self); |
| 123 | return NULL; |
| 124 | } |
| 125 | if (idict->getfunc == _ctypes_get_fielddesc("c")->getfunc) { |
| 126 | struct fielddesc *fd = _ctypes_get_fielddesc("s"); |
| 127 | getfunc = fd->getfunc; |
| 128 | setfunc = fd->setfunc; |
| 129 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 130 | #ifdef CTYPES_UNICODE |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 131 | if (idict->getfunc == _ctypes_get_fielddesc("u")->getfunc) { |
| 132 | struct fielddesc *fd = _ctypes_get_fielddesc("U"); |
| 133 | getfunc = fd->getfunc; |
| 134 | setfunc = fd->setfunc; |
| 135 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 136 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 137 | } |
| 138 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 139 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 140 | self->setfunc = setfunc; |
| 141 | self->getfunc = getfunc; |
| 142 | self->index = index; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 143 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 144 | Py_INCREF(proto); |
| 145 | self->proto = proto; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 146 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 147 | switch (fieldtype) { |
| 148 | case NEW_BITFIELD: |
| 149 | if (big_endian) |
| 150 | self->size = (bitsize << 16) + *pfield_size - *pbitofs - bitsize; |
| 151 | else |
| 152 | self->size = (bitsize << 16) + *pbitofs; |
| 153 | *pbitofs = bitsize; |
| 154 | /* fall through */ |
| 155 | case NO_BITFIELD: |
| 156 | if (pack) |
| 157 | align = min(pack, dict->align); |
| 158 | else |
| 159 | align = dict->align; |
| 160 | if (align && *poffset % align) { |
| 161 | Py_ssize_t delta = align - (*poffset % align); |
| 162 | *psize += delta; |
| 163 | *poffset += delta; |
| 164 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 165 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 166 | if (bitsize == 0) |
| 167 | self->size = size; |
| 168 | *psize += size; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 169 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 170 | self->offset = *poffset; |
| 171 | *poffset += size; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 172 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 173 | *palign = align; |
| 174 | break; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 175 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 176 | case EXPAND_BITFIELD: |
| 177 | *poffset += dict->size - *pfield_size/8; |
| 178 | *psize += dict->size - *pfield_size/8; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 179 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 180 | *pfield_size = dict->size * 8; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 181 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 182 | if (big_endian) |
| 183 | self->size = (bitsize << 16) + *pfield_size - *pbitofs - bitsize; |
| 184 | else |
| 185 | self->size = (bitsize << 16) + *pbitofs; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 186 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 187 | self->offset = *poffset - size; /* poffset is already updated for the NEXT field */ |
| 188 | *pbitofs += bitsize; |
| 189 | break; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 190 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 191 | case CONT_BITFIELD: |
| 192 | if (big_endian) |
| 193 | self->size = (bitsize << 16) + *pfield_size - *pbitofs - bitsize; |
| 194 | else |
| 195 | self->size = (bitsize << 16) + *pbitofs; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 196 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 197 | self->offset = *poffset - size; /* poffset is already updated for the NEXT field */ |
| 198 | *pbitofs += bitsize; |
| 199 | break; |
| 200 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 201 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 202 | return (PyObject *)self; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 203 | } |
| 204 | |
| 205 | static int |
Thomas Heller | 34596a9 | 2009-04-24 20:50:00 +0000 | [diff] [blame] | 206 | PyCField_set(CFieldObject *self, PyObject *inst, PyObject *value) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 207 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 208 | CDataObject *dst; |
| 209 | char *ptr; |
| 210 | assert(CDataObject_Check(inst)); |
| 211 | dst = (CDataObject *)inst; |
| 212 | ptr = dst->b_ptr + self->offset; |
| 213 | if (value == NULL) { |
| 214 | PyErr_SetString(PyExc_TypeError, |
| 215 | "can't delete attribute"); |
| 216 | return -1; |
| 217 | } |
| 218 | return PyCData_set(inst, self->proto, self->setfunc, value, |
| 219 | self->index, self->size, ptr); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 220 | } |
| 221 | |
| 222 | static PyObject * |
Thomas Heller | 34596a9 | 2009-04-24 20:50:00 +0000 | [diff] [blame] | 223 | PyCField_get(CFieldObject *self, PyObject *inst, PyTypeObject *type) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 224 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 225 | CDataObject *src; |
| 226 | if (inst == NULL) { |
| 227 | Py_INCREF(self); |
| 228 | return (PyObject *)self; |
| 229 | } |
| 230 | assert(CDataObject_Check(inst)); |
| 231 | src = (CDataObject *)inst; |
| 232 | return PyCData_get(self->proto, self->getfunc, inst, |
| 233 | self->index, self->size, src->b_ptr + self->offset); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 234 | } |
| 235 | |
Thomas Wouters | 73e5a5b | 2006-06-08 15:35:45 +0000 | [diff] [blame] | 236 | static PyObject * |
Thomas Heller | 34596a9 | 2009-04-24 20:50:00 +0000 | [diff] [blame] | 237 | PyCField_get_offset(PyObject *self, void *data) |
Thomas Wouters | 73e5a5b | 2006-06-08 15:35:45 +0000 | [diff] [blame] | 238 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 239 | return PyLong_FromSsize_t(((CFieldObject *)self)->offset); |
Thomas Wouters | 73e5a5b | 2006-06-08 15:35:45 +0000 | [diff] [blame] | 240 | } |
| 241 | |
| 242 | static PyObject * |
Thomas Heller | 34596a9 | 2009-04-24 20:50:00 +0000 | [diff] [blame] | 243 | PyCField_get_size(PyObject *self, void *data) |
Thomas Wouters | 73e5a5b | 2006-06-08 15:35:45 +0000 | [diff] [blame] | 244 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 245 | return PyLong_FromSsize_t(((CFieldObject *)self)->size); |
Thomas Wouters | 73e5a5b | 2006-06-08 15:35:45 +0000 | [diff] [blame] | 246 | } |
| 247 | |
Thomas Heller | 34596a9 | 2009-04-24 20:50:00 +0000 | [diff] [blame] | 248 | static PyGetSetDef PyCField_getset[] = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 249 | { "offset", PyCField_get_offset, NULL, "offset in bytes of this field" }, |
| 250 | { "size", PyCField_get_size, NULL, "size in bytes of this field" }, |
| 251 | { NULL, NULL, NULL, NULL }, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 252 | }; |
| 253 | |
| 254 | static int |
Thomas Heller | 34596a9 | 2009-04-24 20:50:00 +0000 | [diff] [blame] | 255 | PyCField_traverse(CFieldObject *self, visitproc visit, void *arg) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 256 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 257 | Py_VISIT(self->proto); |
| 258 | return 0; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 259 | } |
| 260 | |
| 261 | static int |
Thomas Heller | 34596a9 | 2009-04-24 20:50:00 +0000 | [diff] [blame] | 262 | PyCField_clear(CFieldObject *self) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 263 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 264 | Py_CLEAR(self->proto); |
| 265 | return 0; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 266 | } |
| 267 | |
| 268 | static void |
Thomas Heller | 34596a9 | 2009-04-24 20:50:00 +0000 | [diff] [blame] | 269 | PyCField_dealloc(PyObject *self) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 270 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 271 | PyCField_clear((CFieldObject *)self); |
| 272 | self->ob_type->tp_free((PyObject *)self); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 273 | } |
| 274 | |
| 275 | static PyObject * |
Thomas Heller | 34596a9 | 2009-04-24 20:50:00 +0000 | [diff] [blame] | 276 | PyCField_repr(CFieldObject *self) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 277 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 278 | PyObject *result; |
| 279 | Py_ssize_t bits = self->size >> 16; |
| 280 | Py_ssize_t size = self->size & 0xFFFF; |
| 281 | const char *name; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 282 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 283 | name = ((PyTypeObject *)self->proto)->tp_name; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 284 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 285 | if (bits) |
| 286 | result = PyUnicode_FromFormat( |
| 287 | "<Field type=%s, ofs=%zd:%zd, bits=%zd>", |
| 288 | name, self->offset, size, bits); |
| 289 | else |
| 290 | result = PyUnicode_FromFormat( |
| 291 | "<Field type=%s, ofs=%zd, size=%zd>", |
| 292 | name, self->offset, size); |
| 293 | return result; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 294 | } |
| 295 | |
Thomas Heller | 34596a9 | 2009-04-24 20:50:00 +0000 | [diff] [blame] | 296 | PyTypeObject PyCField_Type = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 297 | PyVarObject_HEAD_INIT(NULL, 0) |
| 298 | "_ctypes.CField", /* tp_name */ |
| 299 | sizeof(CFieldObject), /* tp_basicsize */ |
| 300 | 0, /* tp_itemsize */ |
| 301 | PyCField_dealloc, /* tp_dealloc */ |
| 302 | 0, /* tp_print */ |
| 303 | 0, /* tp_getattr */ |
| 304 | 0, /* tp_setattr */ |
| 305 | 0, /* tp_reserved */ |
| 306 | (reprfunc)PyCField_repr, /* tp_repr */ |
| 307 | 0, /* tp_as_number */ |
| 308 | 0, /* tp_as_sequence */ |
| 309 | 0, /* tp_as_mapping */ |
| 310 | 0, /* tp_hash */ |
| 311 | 0, /* tp_call */ |
| 312 | 0, /* tp_str */ |
| 313 | 0, /* tp_getattro */ |
| 314 | 0, /* tp_setattro */ |
| 315 | 0, /* tp_as_buffer */ |
| 316 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags */ |
| 317 | "Structure/Union member", /* tp_doc */ |
| 318 | (traverseproc)PyCField_traverse, /* tp_traverse */ |
| 319 | (inquiry)PyCField_clear, /* tp_clear */ |
| 320 | 0, /* tp_richcompare */ |
| 321 | 0, /* tp_weaklistoffset */ |
| 322 | 0, /* tp_iter */ |
| 323 | 0, /* tp_iternext */ |
| 324 | 0, /* tp_methods */ |
| 325 | 0, /* tp_members */ |
| 326 | PyCField_getset, /* tp_getset */ |
| 327 | 0, /* tp_base */ |
| 328 | 0, /* tp_dict */ |
| 329 | (descrgetfunc)PyCField_get, /* tp_descr_get */ |
| 330 | (descrsetfunc)PyCField_set, /* tp_descr_set */ |
| 331 | 0, /* tp_dictoffset */ |
| 332 | 0, /* tp_init */ |
| 333 | 0, /* tp_alloc */ |
| 334 | PyCField_new, /* tp_new */ |
| 335 | 0, /* tp_free */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 336 | }; |
| 337 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 338 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 339 | /******************************************************************/ |
| 340 | /* |
| 341 | Accessor functions |
| 342 | */ |
| 343 | |
| 344 | /* Derived from Modules/structmodule.c: |
| 345 | Helper routine to get a Python integer and raise the appropriate error |
| 346 | if it isn't one */ |
| 347 | |
| 348 | static int |
| 349 | get_long(PyObject *v, long *p) |
| 350 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 351 | long x; |
Christian Heimes | 969fe57 | 2008-01-25 11:23:10 +0000 | [diff] [blame] | 352 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 353 | if (PyFloat_Check(v)) { |
| 354 | PyErr_SetString(PyExc_TypeError, |
| 355 | "int expected instead of float"); |
| 356 | return -1; |
| 357 | } |
| 358 | x = PyLong_AsUnsignedLongMask(v); |
| 359 | if (x == -1 && PyErr_Occurred()) |
| 360 | return -1; |
| 361 | *p = x; |
| 362 | return 0; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 363 | } |
| 364 | |
| 365 | /* Same, but handling unsigned long */ |
| 366 | |
| 367 | static int |
| 368 | get_ulong(PyObject *v, unsigned long *p) |
| 369 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 370 | unsigned long x; |
Christian Heimes | 969fe57 | 2008-01-25 11:23:10 +0000 | [diff] [blame] | 371 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 372 | if (PyFloat_Check(v)) { |
| 373 | PyErr_SetString(PyExc_TypeError, |
| 374 | "int expected instead of float"); |
| 375 | return -1; |
| 376 | } |
| 377 | x = PyLong_AsUnsignedLongMask(v); |
| 378 | if (x == (unsigned long)-1 && PyErr_Occurred()) |
| 379 | return -1; |
| 380 | *p = x; |
| 381 | return 0; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 382 | } |
| 383 | |
| 384 | #ifdef HAVE_LONG_LONG |
| 385 | |
| 386 | /* Same, but handling native long long. */ |
| 387 | |
| 388 | static int |
| 389 | get_longlong(PyObject *v, PY_LONG_LONG *p) |
| 390 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 391 | PY_LONG_LONG x; |
| 392 | if (PyFloat_Check(v)) { |
| 393 | PyErr_SetString(PyExc_TypeError, |
| 394 | "int expected instead of float"); |
| 395 | return -1; |
| 396 | } |
| 397 | x = PyLong_AsUnsignedLongLongMask(v); |
| 398 | if (x == -1 && PyErr_Occurred()) |
| 399 | return -1; |
| 400 | *p = x; |
| 401 | return 0; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 402 | } |
| 403 | |
| 404 | /* Same, but handling native unsigned long long. */ |
| 405 | |
| 406 | static int |
| 407 | get_ulonglong(PyObject *v, unsigned PY_LONG_LONG *p) |
| 408 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 409 | unsigned PY_LONG_LONG x; |
| 410 | if (PyFloat_Check(v)) { |
| 411 | PyErr_SetString(PyExc_TypeError, |
| 412 | "int expected instead of float"); |
| 413 | return -1; |
| 414 | } |
| 415 | x = PyLong_AsUnsignedLongLongMask(v); |
| 416 | if (x == (unsigned PY_LONG_LONG)-1 && PyErr_Occurred()) |
| 417 | return -1; |
| 418 | *p = x; |
| 419 | return 0; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 420 | } |
| 421 | |
| 422 | #endif |
| 423 | |
| 424 | /***************************************************************** |
| 425 | * Integer fields, with bitfield support |
| 426 | */ |
| 427 | |
| 428 | /* how to decode the size field, for integer get/set functions */ |
| 429 | #define LOW_BIT(x) ((x) & 0xFFFF) |
| 430 | #define NUM_BITS(x) ((x) >> 16) |
| 431 | |
| 432 | /* This seems nore a compiler issue than a Windows/non-Windows one */ |
| 433 | #ifdef MS_WIN32 |
| 434 | # define BIT_MASK(size) ((1 << NUM_BITS(size))-1) |
| 435 | #else |
| 436 | # define BIT_MASK(size) ((1LL << NUM_BITS(size))-1) |
| 437 | #endif |
| 438 | |
| 439 | /* This macro CHANGES the first parameter IN PLACE. For proper sign handling, |
| 440 | we must first shift left, then right. |
| 441 | */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 442 | #define GET_BITFIELD(v, size) \ |
| 443 | if (NUM_BITS(size)) { \ |
| 444 | v <<= (sizeof(v)*8 - LOW_BIT(size) - NUM_BITS(size)); \ |
| 445 | v >>= (sizeof(v)*8 - NUM_BITS(size)); \ |
| 446 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 447 | |
| 448 | /* This macro RETURNS the first parameter with the bit field CHANGED. */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 449 | #define SET(x, v, size) \ |
| 450 | (NUM_BITS(size) ? \ |
| 451 | ( ( x & ~(BIT_MASK(size) << LOW_BIT(size)) ) | ( (v & BIT_MASK(size)) << LOW_BIT(size) ) ) \ |
| 452 | : v) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 453 | |
| 454 | /* byte swapping macros */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 455 | #define SWAP_2(v) \ |
| 456 | ( ( (v >> 8) & 0x00FF) | \ |
| 457 | ( (v << 8) & 0xFF00) ) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 458 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 459 | #define SWAP_4(v) \ |
| 460 | ( ( (v & 0x000000FF) << 24 ) | \ |
| 461 | ( (v & 0x0000FF00) << 8 ) | \ |
| 462 | ( (v & 0x00FF0000) >> 8 ) | \ |
| 463 | ( ((v >> 24) & 0xFF)) ) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 464 | |
| 465 | #ifdef _MSC_VER |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 466 | #define SWAP_8(v) \ |
| 467 | ( ( (v & 0x00000000000000FFL) << 56 ) | \ |
| 468 | ( (v & 0x000000000000FF00L) << 40 ) | \ |
| 469 | ( (v & 0x0000000000FF0000L) << 24 ) | \ |
| 470 | ( (v & 0x00000000FF000000L) << 8 ) | \ |
| 471 | ( (v & 0x000000FF00000000L) >> 8 ) | \ |
| 472 | ( (v & 0x0000FF0000000000L) >> 24 ) | \ |
| 473 | ( (v & 0x00FF000000000000L) >> 40 ) | \ |
| 474 | ( ((v >> 56) & 0xFF)) ) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 475 | #else |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 476 | #define SWAP_8(v) \ |
| 477 | ( ( (v & 0x00000000000000FFLL) << 56 ) | \ |
| 478 | ( (v & 0x000000000000FF00LL) << 40 ) | \ |
| 479 | ( (v & 0x0000000000FF0000LL) << 24 ) | \ |
| 480 | ( (v & 0x00000000FF000000LL) << 8 ) | \ |
| 481 | ( (v & 0x000000FF00000000LL) >> 8 ) | \ |
| 482 | ( (v & 0x0000FF0000000000LL) >> 24 ) | \ |
| 483 | ( (v & 0x00FF000000000000LL) >> 40 ) | \ |
| 484 | ( ((v >> 56) & 0xFF)) ) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 485 | #endif |
| 486 | |
| 487 | #define SWAP_INT SWAP_4 |
| 488 | |
| 489 | #if SIZEOF_LONG == 4 |
| 490 | # define SWAP_LONG SWAP_4 |
| 491 | #elif SIZEOF_LONG == 8 |
| 492 | # define SWAP_LONG SWAP_8 |
| 493 | #endif |
| 494 | /***************************************************************** |
| 495 | * The setter methods return an object which must be kept alive, to keep the |
| 496 | * data valid which has been stored in the memory block. The ctypes object |
| 497 | * instance inserts this object into its 'b_objects' list. |
| 498 | * |
| 499 | * For simple Python types like integers or characters, there is nothing that |
| 500 | * has to been kept alive, so Py_None is returned in these cases. But this |
| 501 | * makes inspecting the 'b_objects' list, which is accessible from Python for |
| 502 | * debugging, less useful. |
| 503 | * |
| 504 | * So, defining the _CTYPES_DEBUG_KEEP symbol returns the original value |
| 505 | * instead of Py_None. |
| 506 | */ |
| 507 | |
| 508 | #ifdef _CTYPES_DEBUG_KEEP |
| 509 | #define _RET(x) Py_INCREF(x); return x |
| 510 | #else |
| 511 | #define _RET(X) Py_INCREF(Py_None); return Py_None |
| 512 | #endif |
| 513 | |
| 514 | /***************************************************************** |
| 515 | * integer accessor methods, supporting bit fields |
| 516 | */ |
| 517 | |
| 518 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 519 | b_set(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 520 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 521 | long val; |
| 522 | if (get_long(value, &val) < 0) |
| 523 | return NULL; |
| 524 | *(signed char *)ptr = (signed char)SET(*(signed char *)ptr, (signed char)val, size); |
| 525 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 526 | } |
| 527 | |
| 528 | |
| 529 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 530 | b_get(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 531 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 532 | signed char val = *(signed char *)ptr; |
| 533 | GET_BITFIELD(val, size); |
| 534 | return PyLong_FromLong(val); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 535 | } |
| 536 | |
| 537 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 538 | B_set(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 539 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 540 | unsigned long val; |
| 541 | if (get_ulong(value, &val) < 0) |
| 542 | return NULL; |
| 543 | *(unsigned char *)ptr = (unsigned char)SET(*(unsigned char*)ptr, |
| 544 | (unsigned short)val, size); |
| 545 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 546 | } |
| 547 | |
| 548 | |
| 549 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 550 | B_get(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 551 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 552 | unsigned char val = *(unsigned char *)ptr; |
| 553 | GET_BITFIELD(val, size); |
| 554 | return PyLong_FromLong(val); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 555 | } |
| 556 | |
| 557 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 558 | h_set(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 559 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 560 | long val; |
| 561 | short x; |
| 562 | if (get_long(value, &val) < 0) |
| 563 | return NULL; |
| 564 | memcpy(&x, ptr, sizeof(x)); |
| 565 | x = SET(x, (short)val, size); |
| 566 | memcpy(ptr, &x, sizeof(x)); |
| 567 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 568 | } |
| 569 | |
| 570 | |
| 571 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 572 | h_set_sw(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 573 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 574 | long val; |
| 575 | short field; |
| 576 | if (get_long(value, &val) < 0) |
| 577 | return NULL; |
| 578 | memcpy(&field, ptr, sizeof(field)); |
| 579 | field = SWAP_2(field); |
| 580 | field = SET(field, (short)val, size); |
| 581 | field = SWAP_2(field); |
| 582 | memcpy(ptr, &field, sizeof(field)); |
| 583 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 584 | } |
| 585 | |
| 586 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 587 | h_get(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 588 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 589 | short val; |
| 590 | memcpy(&val, ptr, sizeof(val)); |
| 591 | GET_BITFIELD(val, size); |
| 592 | return PyLong_FromLong((long)val); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 593 | } |
| 594 | |
| 595 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 596 | h_get_sw(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 597 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 598 | short val; |
| 599 | memcpy(&val, ptr, sizeof(val)); |
| 600 | val = SWAP_2(val); |
| 601 | GET_BITFIELD(val, size); |
| 602 | return PyLong_FromLong(val); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 603 | } |
| 604 | |
| 605 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 606 | H_set(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 607 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 608 | unsigned long val; |
| 609 | unsigned short x; |
| 610 | if (get_ulong(value, &val) < 0) |
| 611 | return NULL; |
| 612 | memcpy(&x, ptr, sizeof(x)); |
| 613 | x = SET(x, (unsigned short)val, size); |
| 614 | memcpy(ptr, &x, sizeof(x)); |
| 615 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 616 | } |
| 617 | |
| 618 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 619 | H_set_sw(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 620 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 621 | unsigned long val; |
| 622 | unsigned short field; |
| 623 | if (get_ulong(value, &val) < 0) |
| 624 | return NULL; |
| 625 | memcpy(&field, ptr, sizeof(field)); |
| 626 | field = SWAP_2(field); |
| 627 | field = SET(field, (unsigned short)val, size); |
| 628 | field = SWAP_2(field); |
| 629 | memcpy(ptr, &field, sizeof(field)); |
| 630 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 631 | } |
| 632 | |
| 633 | |
| 634 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 635 | H_get(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 636 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 637 | unsigned short val; |
| 638 | memcpy(&val, ptr, sizeof(val)); |
| 639 | GET_BITFIELD(val, size); |
| 640 | return PyLong_FromLong(val); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 641 | } |
| 642 | |
| 643 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 644 | H_get_sw(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 645 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 646 | unsigned short val; |
| 647 | memcpy(&val, ptr, sizeof(val)); |
| 648 | val = SWAP_2(val); |
| 649 | GET_BITFIELD(val, size); |
| 650 | return PyLong_FromLong(val); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 651 | } |
| 652 | |
| 653 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 654 | i_set(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 655 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 656 | long val; |
| 657 | int x; |
| 658 | if (get_long(value, &val) < 0) |
| 659 | return NULL; |
| 660 | memcpy(&x, ptr, sizeof(x)); |
| 661 | x = SET(x, (int)val, size); |
| 662 | memcpy(ptr, &x, sizeof(x)); |
| 663 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 664 | } |
| 665 | |
| 666 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 667 | i_set_sw(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 668 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 669 | long val; |
| 670 | int field; |
| 671 | if (get_long(value, &val) < 0) |
| 672 | return NULL; |
| 673 | memcpy(&field, ptr, sizeof(field)); |
| 674 | field = SWAP_INT(field); |
| 675 | field = SET(field, (int)val, size); |
| 676 | field = SWAP_INT(field); |
| 677 | memcpy(ptr, &field, sizeof(field)); |
| 678 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 679 | } |
| 680 | |
| 681 | |
| 682 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 683 | i_get(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 684 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 685 | int val; |
| 686 | memcpy(&val, ptr, sizeof(val)); |
| 687 | GET_BITFIELD(val, size); |
| 688 | return PyLong_FromLong(val); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 689 | } |
| 690 | |
| 691 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 692 | i_get_sw(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 693 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 694 | int val; |
| 695 | memcpy(&val, ptr, sizeof(val)); |
| 696 | val = SWAP_INT(val); |
| 697 | GET_BITFIELD(val, size); |
| 698 | return PyLong_FromLong(val); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 699 | } |
| 700 | |
| 701 | #ifdef MS_WIN32 |
| 702 | /* short BOOL - VARIANT_BOOL */ |
| 703 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 704 | vBOOL_set(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 705 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 706 | switch (PyObject_IsTrue(value)) { |
| 707 | case -1: |
| 708 | return NULL; |
| 709 | case 0: |
| 710 | *(short int *)ptr = VARIANT_FALSE; |
| 711 | _RET(value); |
| 712 | default: |
| 713 | *(short int *)ptr = VARIANT_TRUE; |
| 714 | _RET(value); |
| 715 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 716 | } |
| 717 | |
| 718 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 719 | vBOOL_get(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 720 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 721 | return PyBool_FromLong((long)*(short int *)ptr); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 722 | } |
| 723 | #endif |
| 724 | |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 725 | #ifdef HAVE_C99_BOOL |
| 726 | #define BOOL_TYPE _Bool |
| 727 | #else |
| 728 | #define BOOL_TYPE char |
| 729 | #undef SIZEOF__BOOL |
| 730 | #define SIZEOF__BOOL 1 |
| 731 | #endif |
| 732 | |
| 733 | static PyObject * |
Christian Heimes | dd15f6c | 2008-03-16 00:07:10 +0000 | [diff] [blame] | 734 | bool_set(void *ptr, PyObject *value, Py_ssize_t size) |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 735 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 736 | switch (PyObject_IsTrue(value)) { |
| 737 | case -1: |
| 738 | return NULL; |
| 739 | case 0: |
| 740 | *(BOOL_TYPE *)ptr = 0; |
| 741 | _RET(value); |
| 742 | default: |
| 743 | *(BOOL_TYPE *)ptr = 1; |
| 744 | _RET(value); |
| 745 | } |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 746 | } |
| 747 | |
| 748 | static PyObject * |
Christian Heimes | dd15f6c | 2008-03-16 00:07:10 +0000 | [diff] [blame] | 749 | bool_get(void *ptr, Py_ssize_t size) |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 750 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 751 | return PyBool_FromLong((long)*(BOOL_TYPE *)ptr); |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 752 | } |
| 753 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 754 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 755 | I_set(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 756 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 757 | unsigned long val; |
| 758 | unsigned int x; |
| 759 | if (get_ulong(value, &val) < 0) |
| 760 | return NULL; |
| 761 | memcpy(&x, ptr, sizeof(x)); |
| 762 | x = SET(x, (unsigned int)val, size); |
| 763 | memcpy(ptr, &x, sizeof(x)); |
| 764 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 765 | } |
| 766 | |
| 767 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 768 | I_set_sw(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 769 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 770 | unsigned long val; |
| 771 | unsigned int field; |
| 772 | if (get_ulong(value, &val) < 0) |
| 773 | return NULL; |
| 774 | memcpy(&field, ptr, sizeof(field)); |
| 775 | field = (unsigned int)SET(field, (unsigned int)val, size); |
| 776 | field = SWAP_INT(field); |
| 777 | memcpy(ptr, &field, sizeof(field)); |
| 778 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 779 | } |
| 780 | |
| 781 | |
| 782 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 783 | I_get(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 784 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 785 | unsigned int val; |
| 786 | memcpy(&val, ptr, sizeof(val)); |
| 787 | GET_BITFIELD(val, size); |
| 788 | return PyLong_FromUnsignedLong(val); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 789 | } |
| 790 | |
| 791 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 792 | I_get_sw(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 793 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 794 | unsigned int val; |
| 795 | memcpy(&val, ptr, sizeof(val)); |
| 796 | val = SWAP_INT(val); |
| 797 | GET_BITFIELD(val, size); |
| 798 | return PyLong_FromUnsignedLong(val); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 799 | } |
| 800 | |
| 801 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 802 | l_set(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 803 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 804 | long val; |
| 805 | long x; |
| 806 | if (get_long(value, &val) < 0) |
| 807 | return NULL; |
| 808 | memcpy(&x, ptr, sizeof(x)); |
| 809 | x = SET(x, val, size); |
| 810 | memcpy(ptr, &x, sizeof(x)); |
| 811 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 812 | } |
| 813 | |
| 814 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 815 | l_set_sw(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 816 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 817 | long val; |
| 818 | long field; |
| 819 | if (get_long(value, &val) < 0) |
| 820 | return NULL; |
| 821 | memcpy(&field, ptr, sizeof(field)); |
| 822 | field = SWAP_LONG(field); |
| 823 | field = (long)SET(field, val, size); |
| 824 | field = SWAP_LONG(field); |
| 825 | memcpy(ptr, &field, sizeof(field)); |
| 826 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 827 | } |
| 828 | |
| 829 | |
| 830 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 831 | l_get(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 832 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 833 | long val; |
| 834 | memcpy(&val, ptr, sizeof(val)); |
| 835 | GET_BITFIELD(val, size); |
| 836 | return PyLong_FromLong(val); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 837 | } |
| 838 | |
| 839 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 840 | l_get_sw(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 841 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 842 | long val; |
| 843 | memcpy(&val, ptr, sizeof(val)); |
| 844 | val = SWAP_LONG(val); |
| 845 | GET_BITFIELD(val, size); |
| 846 | return PyLong_FromLong(val); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 847 | } |
| 848 | |
| 849 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 850 | L_set(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 851 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 852 | unsigned long val; |
| 853 | unsigned long x; |
| 854 | if (get_ulong(value, &val) < 0) |
| 855 | return NULL; |
| 856 | memcpy(&x, ptr, sizeof(x)); |
| 857 | x = SET(x, val, size); |
| 858 | memcpy(ptr, &x, sizeof(x)); |
| 859 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 860 | } |
| 861 | |
| 862 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 863 | L_set_sw(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 864 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 865 | unsigned long val; |
| 866 | unsigned long field; |
| 867 | if (get_ulong(value, &val) < 0) |
| 868 | return NULL; |
| 869 | memcpy(&field, ptr, sizeof(field)); |
| 870 | field = SWAP_LONG(field); |
| 871 | field = (unsigned long)SET(field, val, size); |
| 872 | field = SWAP_LONG(field); |
| 873 | memcpy(ptr, &field, sizeof(field)); |
| 874 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 875 | } |
| 876 | |
| 877 | |
| 878 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 879 | L_get(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 880 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 881 | unsigned long val; |
| 882 | memcpy(&val, ptr, sizeof(val)); |
| 883 | GET_BITFIELD(val, size); |
| 884 | return PyLong_FromUnsignedLong(val); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 885 | } |
| 886 | |
| 887 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 888 | L_get_sw(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 889 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 890 | unsigned long val; |
| 891 | memcpy(&val, ptr, sizeof(val)); |
| 892 | val = SWAP_LONG(val); |
| 893 | GET_BITFIELD(val, size); |
| 894 | return PyLong_FromUnsignedLong(val); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 895 | } |
| 896 | |
| 897 | #ifdef HAVE_LONG_LONG |
| 898 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 899 | q_set(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 900 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 901 | PY_LONG_LONG val; |
| 902 | PY_LONG_LONG x; |
| 903 | if (get_longlong(value, &val) < 0) |
| 904 | return NULL; |
| 905 | memcpy(&x, ptr, sizeof(x)); |
| 906 | x = SET(x, val, size); |
| 907 | memcpy(ptr, &x, sizeof(x)); |
| 908 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 909 | } |
| 910 | |
| 911 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 912 | q_set_sw(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 913 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 914 | PY_LONG_LONG val; |
| 915 | PY_LONG_LONG field; |
| 916 | if (get_longlong(value, &val) < 0) |
| 917 | return NULL; |
| 918 | memcpy(&field, ptr, sizeof(field)); |
| 919 | field = SWAP_8(field); |
| 920 | field = (PY_LONG_LONG)SET(field, val, size); |
| 921 | field = SWAP_8(field); |
| 922 | memcpy(ptr, &field, sizeof(field)); |
| 923 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 924 | } |
| 925 | |
| 926 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 927 | q_get(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 928 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 929 | PY_LONG_LONG val; |
| 930 | memcpy(&val, ptr, sizeof(val)); |
| 931 | GET_BITFIELD(val, size); |
| 932 | return PyLong_FromLongLong(val); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 933 | } |
| 934 | |
| 935 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 936 | q_get_sw(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 937 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 938 | PY_LONG_LONG val; |
| 939 | memcpy(&val, ptr, sizeof(val)); |
| 940 | val = SWAP_8(val); |
| 941 | GET_BITFIELD(val, size); |
| 942 | return PyLong_FromLongLong(val); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 943 | } |
| 944 | |
| 945 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 946 | Q_set(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 947 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 948 | unsigned PY_LONG_LONG val; |
| 949 | unsigned PY_LONG_LONG x; |
| 950 | if (get_ulonglong(value, &val) < 0) |
| 951 | return NULL; |
| 952 | memcpy(&x, ptr, sizeof(x)); |
| 953 | x = SET(x, val, size); |
| 954 | memcpy(ptr, &x, sizeof(x)); |
| 955 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 956 | } |
| 957 | |
| 958 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 959 | Q_set_sw(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 960 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 961 | unsigned PY_LONG_LONG val; |
| 962 | unsigned PY_LONG_LONG field; |
| 963 | if (get_ulonglong(value, &val) < 0) |
| 964 | return NULL; |
| 965 | memcpy(&field, ptr, sizeof(field)); |
| 966 | field = SWAP_8(field); |
| 967 | field = (unsigned PY_LONG_LONG)SET(field, val, size); |
| 968 | field = SWAP_8(field); |
| 969 | memcpy(ptr, &field, sizeof(field)); |
| 970 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 971 | } |
| 972 | |
| 973 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 974 | Q_get(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 975 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 976 | unsigned PY_LONG_LONG val; |
| 977 | memcpy(&val, ptr, sizeof(val)); |
| 978 | GET_BITFIELD(val, size); |
| 979 | return PyLong_FromUnsignedLongLong(val); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 980 | } |
| 981 | |
| 982 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 983 | Q_get_sw(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 984 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 985 | unsigned PY_LONG_LONG val; |
| 986 | memcpy(&val, ptr, sizeof(val)); |
| 987 | val = SWAP_8(val); |
| 988 | GET_BITFIELD(val, size); |
| 989 | return PyLong_FromUnsignedLongLong(val); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 990 | } |
| 991 | #endif |
| 992 | |
| 993 | /***************************************************************** |
| 994 | * non-integer accessor methods, not supporting bit fields |
| 995 | */ |
| 996 | |
| 997 | |
Thomas Wouters | 89d996e | 2007-09-08 17:39:28 +0000 | [diff] [blame] | 998 | static PyObject * |
Thomas Heller | ff72122 | 2008-01-17 18:46:55 +0000 | [diff] [blame] | 999 | g_set(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Wouters | 89d996e | 2007-09-08 17:39:28 +0000 | [diff] [blame] | 1000 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1001 | long double x; |
Thomas Wouters | 89d996e | 2007-09-08 17:39:28 +0000 | [diff] [blame] | 1002 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1003 | x = PyFloat_AsDouble(value); |
| 1004 | if (x == -1 && PyErr_Occurred()) { |
| 1005 | PyErr_Format(PyExc_TypeError, |
| 1006 | " float expected instead of %s instance", |
| 1007 | value->ob_type->tp_name); |
| 1008 | return NULL; |
| 1009 | } |
| 1010 | memcpy(ptr, &x, sizeof(long double)); |
| 1011 | _RET(value); |
Thomas Wouters | 89d996e | 2007-09-08 17:39:28 +0000 | [diff] [blame] | 1012 | } |
| 1013 | |
| 1014 | static PyObject * |
Thomas Heller | ff72122 | 2008-01-17 18:46:55 +0000 | [diff] [blame] | 1015 | g_get(void *ptr, Py_ssize_t size) |
Thomas Wouters | 89d996e | 2007-09-08 17:39:28 +0000 | [diff] [blame] | 1016 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1017 | long double val; |
| 1018 | memcpy(&val, ptr, sizeof(long double)); |
| 1019 | return PyFloat_FromDouble(val); |
Thomas Wouters | 89d996e | 2007-09-08 17:39:28 +0000 | [diff] [blame] | 1020 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1021 | |
| 1022 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1023 | d_set(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1024 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1025 | double x; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1026 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1027 | x = PyFloat_AsDouble(value); |
| 1028 | if (x == -1 && PyErr_Occurred()) { |
| 1029 | PyErr_Format(PyExc_TypeError, |
| 1030 | " float expected instead of %s instance", |
| 1031 | value->ob_type->tp_name); |
| 1032 | return NULL; |
| 1033 | } |
| 1034 | memcpy(ptr, &x, sizeof(double)); |
| 1035 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1036 | } |
| 1037 | |
| 1038 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1039 | d_get(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1040 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1041 | double val; |
| 1042 | memcpy(&val, ptr, sizeof(val)); |
| 1043 | return PyFloat_FromDouble(val); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1044 | } |
| 1045 | |
| 1046 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1047 | d_set_sw(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1048 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1049 | double x; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1050 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1051 | x = PyFloat_AsDouble(value); |
| 1052 | if (x == -1 && PyErr_Occurred()) { |
| 1053 | PyErr_Format(PyExc_TypeError, |
| 1054 | " float expected instead of %s instance", |
| 1055 | value->ob_type->tp_name); |
| 1056 | return NULL; |
| 1057 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1058 | #ifdef WORDS_BIGENDIAN |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1059 | if (_PyFloat_Pack8(x, (unsigned char *)ptr, 1)) |
| 1060 | return NULL; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1061 | #else |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1062 | if (_PyFloat_Pack8(x, (unsigned char *)ptr, 0)) |
| 1063 | return NULL; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1064 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1065 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1066 | } |
| 1067 | |
| 1068 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1069 | d_get_sw(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1070 | { |
| 1071 | #ifdef WORDS_BIGENDIAN |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1072 | return PyFloat_FromDouble(_PyFloat_Unpack8(ptr, 1)); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1073 | #else |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1074 | return PyFloat_FromDouble(_PyFloat_Unpack8(ptr, 0)); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1075 | #endif |
| 1076 | } |
| 1077 | |
| 1078 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1079 | f_set(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1080 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1081 | float x; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1082 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1083 | x = (float)PyFloat_AsDouble(value); |
| 1084 | if (x == -1 && PyErr_Occurred()) { |
| 1085 | PyErr_Format(PyExc_TypeError, |
| 1086 | " float expected instead of %s instance", |
| 1087 | value->ob_type->tp_name); |
| 1088 | return NULL; |
| 1089 | } |
| 1090 | memcpy(ptr, &x, sizeof(x)); |
| 1091 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1092 | } |
| 1093 | |
| 1094 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1095 | f_get(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1096 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1097 | float val; |
| 1098 | memcpy(&val, ptr, sizeof(val)); |
| 1099 | return PyFloat_FromDouble(val); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1100 | } |
| 1101 | |
| 1102 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1103 | f_set_sw(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1104 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1105 | float x; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1106 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1107 | x = (float)PyFloat_AsDouble(value); |
| 1108 | if (x == -1 && PyErr_Occurred()) { |
| 1109 | PyErr_Format(PyExc_TypeError, |
| 1110 | " float expected instead of %s instance", |
| 1111 | value->ob_type->tp_name); |
| 1112 | return NULL; |
| 1113 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1114 | #ifdef WORDS_BIGENDIAN |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1115 | if (_PyFloat_Pack4(x, (unsigned char *)ptr, 1)) |
| 1116 | return NULL; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1117 | #else |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1118 | if (_PyFloat_Pack4(x, (unsigned char *)ptr, 0)) |
| 1119 | return NULL; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1120 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1121 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1122 | } |
| 1123 | |
| 1124 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1125 | f_get_sw(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1126 | { |
| 1127 | #ifdef WORDS_BIGENDIAN |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1128 | return PyFloat_FromDouble(_PyFloat_Unpack4(ptr, 1)); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1129 | #else |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1130 | return PyFloat_FromDouble(_PyFloat_Unpack4(ptr, 0)); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1131 | #endif |
| 1132 | } |
| 1133 | |
| 1134 | /* |
| 1135 | py_object refcounts: |
| 1136 | |
| 1137 | 1. If we have a py_object instance, O_get must Py_INCREF the returned |
| 1138 | object, of course. If O_get is called from a function result, no py_object |
| 1139 | instance is created - so callproc.c::GetResult has to call Py_DECREF. |
| 1140 | |
| 1141 | 2. The memory block in py_object owns a refcount. So, py_object must call |
| 1142 | Py_DECREF on destruction. Maybe only when b_needsfree is non-zero. |
| 1143 | */ |
| 1144 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1145 | O_get(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1146 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1147 | PyObject *ob = *(PyObject **)ptr; |
| 1148 | if (ob == NULL) { |
| 1149 | if (!PyErr_Occurred()) |
| 1150 | /* Set an error if not yet set */ |
| 1151 | PyErr_SetString(PyExc_ValueError, |
| 1152 | "PyObject is NULL"); |
| 1153 | return NULL; |
| 1154 | } |
| 1155 | Py_INCREF(ob); |
| 1156 | return ob; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1157 | } |
| 1158 | |
| 1159 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1160 | O_set(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1161 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1162 | /* Hm, does the memory block need it's own refcount or not? */ |
| 1163 | *(PyObject **)ptr = value; |
| 1164 | Py_INCREF(value); |
| 1165 | return value; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1166 | } |
| 1167 | |
| 1168 | |
| 1169 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1170 | c_set(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1171 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1172 | if (PyBytes_Check(value) && PyBytes_GET_SIZE(value) == 1) { |
| 1173 | *(char *)ptr = PyBytes_AS_STRING(value)[0]; |
| 1174 | _RET(value); |
| 1175 | } |
| 1176 | if (PyByteArray_Check(value) && PyByteArray_GET_SIZE(value) == 1) { |
| 1177 | *(char *)ptr = PyByteArray_AS_STRING(value)[0]; |
| 1178 | _RET(value); |
| 1179 | } |
| 1180 | if (PyLong_Check(value)) |
| 1181 | { |
| 1182 | long longval = PyLong_AS_LONG(value); |
| 1183 | if (longval < 0 || longval >= 256) |
| 1184 | goto error; |
| 1185 | *(char *)ptr = (char)longval; |
| 1186 | _RET(value); |
| 1187 | } |
Thomas Heller | 19b5254 | 2007-07-13 12:52:51 +0000 | [diff] [blame] | 1188 | error: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1189 | PyErr_Format(PyExc_TypeError, |
| 1190 | "one character string expected"); |
| 1191 | return NULL; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1192 | } |
| 1193 | |
| 1194 | |
| 1195 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1196 | c_get(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1197 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1198 | return PyBytes_FromStringAndSize((char *)ptr, 1); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1199 | } |
| 1200 | |
| 1201 | #ifdef CTYPES_UNICODE |
| 1202 | /* u - a single wchar_t character */ |
| 1203 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1204 | u_set(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1205 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1206 | Py_ssize_t len; |
Victor Stinner | 749261e | 2010-10-02 11:25:35 +0000 | [diff] [blame] | 1207 | wchar_t chars[2]; |
Victor Stinner | cf44883 | 2010-07-28 00:15:03 +0000 | [diff] [blame] | 1208 | if (!PyUnicode_Check(value)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1209 | PyErr_Format(PyExc_TypeError, |
| 1210 | "unicode string expected instead of %s instance", |
| 1211 | value->ob_type->tp_name); |
| 1212 | return NULL; |
| 1213 | } else |
| 1214 | Py_INCREF(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1215 | |
Martin v. Löwis | 4d0d471 | 2010-12-03 20:14:31 +0000 | [diff] [blame] | 1216 | len = PyUnicode_AsWideChar(value, chars, 2); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1217 | if (len != 1) { |
| 1218 | Py_DECREF(value); |
| 1219 | PyErr_SetString(PyExc_TypeError, |
| 1220 | "one character unicode string expected"); |
| 1221 | return NULL; |
| 1222 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1223 | |
Victor Stinner | 749261e | 2010-10-02 11:25:35 +0000 | [diff] [blame] | 1224 | *(wchar_t *)ptr = chars[0]; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1225 | Py_DECREF(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1226 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1227 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1228 | } |
| 1229 | |
| 1230 | |
| 1231 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1232 | u_get(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1233 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1234 | return PyUnicode_FromWideChar((wchar_t *)ptr, 1); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1235 | } |
| 1236 | |
| 1237 | /* U - a unicode string */ |
| 1238 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1239 | U_get(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1240 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1241 | PyObject *result; |
| 1242 | Py_ssize_t len; |
| 1243 | Py_UNICODE *p; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1244 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1245 | size /= sizeof(wchar_t); /* we count character units here, not bytes */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1246 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1247 | result = PyUnicode_FromWideChar((wchar_t *)ptr, size); |
| 1248 | if (!result) |
| 1249 | return NULL; |
| 1250 | /* We need 'result' to be able to count the characters with wcslen, |
| 1251 | since ptr may not be NUL terminated. If the length is smaller (if |
| 1252 | it was actually NUL terminated, we construct a new one and throw |
| 1253 | away the result. |
| 1254 | */ |
| 1255 | /* chop off at the first NUL character, if any. */ |
| 1256 | p = PyUnicode_AS_UNICODE(result); |
| 1257 | for (len = 0; len < size; ++len) |
| 1258 | if (!p[len]) |
| 1259 | break; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1260 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1261 | if (len < size) { |
| 1262 | PyObject *ob = PyUnicode_FromWideChar((wchar_t *)ptr, len); |
| 1263 | Py_DECREF(result); |
| 1264 | return ob; |
| 1265 | } |
| 1266 | return result; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1267 | } |
| 1268 | |
| 1269 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1270 | U_set(void *ptr, PyObject *value, Py_ssize_t length) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1271 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1272 | Py_ssize_t size; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1273 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1274 | /* It's easier to calculate in characters than in bytes */ |
| 1275 | length /= sizeof(wchar_t); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1276 | |
Victor Stinner | cf44883 | 2010-07-28 00:15:03 +0000 | [diff] [blame] | 1277 | if (!PyUnicode_Check(value)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1278 | PyErr_Format(PyExc_TypeError, |
| 1279 | "unicode string expected instead of %s instance", |
| 1280 | value->ob_type->tp_name); |
| 1281 | return NULL; |
| 1282 | } else |
| 1283 | Py_INCREF(value); |
| 1284 | size = PyUnicode_GET_SIZE(value); |
| 1285 | if (size > length) { |
| 1286 | PyErr_Format(PyExc_ValueError, |
| 1287 | "string too long (%zd, maximum length %zd)", |
| 1288 | size, length); |
| 1289 | Py_DECREF(value); |
| 1290 | return NULL; |
| 1291 | } else if (size < length-1) |
| 1292 | /* copy terminating NUL character if there is space */ |
| 1293 | size += 1; |
Martin v. Löwis | 4d0d471 | 2010-12-03 20:14:31 +0000 | [diff] [blame] | 1294 | PyUnicode_AsWideChar(value, (wchar_t *)ptr, size); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1295 | return value; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1296 | } |
| 1297 | |
| 1298 | #endif |
| 1299 | |
| 1300 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1301 | s_get(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1302 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1303 | Py_ssize_t i; |
| 1304 | char *p; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1305 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1306 | p = (char *)ptr; |
| 1307 | for (i = 0; i < size; ++i) { |
| 1308 | if (*p++ == '\0') |
| 1309 | break; |
| 1310 | } |
Thomas Heller | 19b5254 | 2007-07-13 12:52:51 +0000 | [diff] [blame] | 1311 | |
Victor Stinner | da0eca4 | 2010-06-11 21:50:30 +0000 | [diff] [blame] | 1312 | return PyBytes_FromStringAndSize((char *)ptr, (Py_ssize_t)i); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1313 | } |
| 1314 | |
| 1315 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1316 | s_set(void *ptr, PyObject *value, Py_ssize_t length) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1317 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1318 | char *data; |
| 1319 | Py_ssize_t size; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1320 | |
Victor Stinner | cf44883 | 2010-07-28 00:15:03 +0000 | [diff] [blame] | 1321 | if(PyBytes_Check(value)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1322 | Py_INCREF(value); |
| 1323 | } else { |
| 1324 | PyErr_Format(PyExc_TypeError, |
| 1325 | "expected string, %s found", |
| 1326 | value->ob_type->tp_name); |
| 1327 | return NULL; |
| 1328 | } |
Thomas Heller | e5095e1 | 2007-07-13 11:19:35 +0000 | [diff] [blame] | 1329 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1330 | data = PyBytes_AS_STRING(value); |
| 1331 | if (!data) |
| 1332 | return NULL; |
| 1333 | size = strlen(data); /* XXX Why not Py_SIZE(value)? */ |
| 1334 | if (size < length) { |
| 1335 | /* This will copy the leading NUL character |
| 1336 | * if there is space for it. |
| 1337 | */ |
| 1338 | ++size; |
| 1339 | } else if (size > length) { |
| 1340 | PyErr_Format(PyExc_ValueError, |
| 1341 | "string too long (%zd, maximum length %zd)", |
| 1342 | size, length); |
| 1343 | Py_DECREF(value); |
| 1344 | return NULL; |
| 1345 | } |
| 1346 | /* Also copy the terminating NUL character if there is space */ |
| 1347 | memcpy((char *)ptr, data, size); |
Thomas Heller | e5095e1 | 2007-07-13 11:19:35 +0000 | [diff] [blame] | 1348 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1349 | Py_DECREF(value); |
| 1350 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1351 | } |
| 1352 | |
| 1353 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1354 | z_set(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1355 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1356 | if (value == Py_None) { |
| 1357 | *(char **)ptr = NULL; |
| 1358 | Py_INCREF(value); |
| 1359 | return value; |
| 1360 | } |
| 1361 | if (PyBytes_Check(value)) { |
| 1362 | *(char **)ptr = PyBytes_AsString(value); |
| 1363 | Py_INCREF(value); |
| 1364 | return value; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1365 | } else if (PyLong_Check(value)) { |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 1366 | #if SIZEOF_VOID_P == SIZEOF_LONG_LONG |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1367 | *(char **)ptr = (char *)PyLong_AsUnsignedLongLongMask(value); |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 1368 | #else |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1369 | *(char **)ptr = (char *)PyLong_AsUnsignedLongMask(value); |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 1370 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1371 | _RET(value); |
| 1372 | } |
| 1373 | PyErr_Format(PyExc_TypeError, |
| 1374 | "string or integer address expected instead of %s instance", |
| 1375 | value->ob_type->tp_name); |
| 1376 | return NULL; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1377 | } |
| 1378 | |
| 1379 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1380 | z_get(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1381 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1382 | /* XXX What about invalid pointers ??? */ |
| 1383 | if (*(void **)ptr) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1384 | #if defined(MS_WIN32) && !defined(_WIN32_WCE) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1385 | if (IsBadStringPtrA(*(char **)ptr, -1)) { |
| 1386 | PyErr_Format(PyExc_ValueError, |
| 1387 | "invalid string pointer %p", |
| 1388 | *(char **)ptr); |
| 1389 | return NULL; |
| 1390 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1391 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1392 | return PyBytes_FromStringAndSize(*(char **)ptr, |
| 1393 | strlen(*(char **)ptr)); |
| 1394 | } else { |
| 1395 | Py_INCREF(Py_None); |
| 1396 | return Py_None; |
| 1397 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1398 | } |
| 1399 | |
| 1400 | #ifdef CTYPES_UNICODE |
| 1401 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1402 | Z_set(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1403 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1404 | if (value == Py_None) { |
| 1405 | *(wchar_t **)ptr = NULL; |
| 1406 | Py_INCREF(value); |
| 1407 | return value; |
| 1408 | } |
| 1409 | if (PyLong_Check(value) || PyLong_Check(value)) { |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 1410 | #if SIZEOF_VOID_P == SIZEOF_LONG_LONG |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1411 | *(wchar_t **)ptr = (wchar_t *)PyLong_AsUnsignedLongLongMask(value); |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 1412 | #else |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1413 | *(wchar_t **)ptr = (wchar_t *)PyLong_AsUnsignedLongMask(value); |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 1414 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1415 | Py_INCREF(Py_None); |
| 1416 | return Py_None; |
| 1417 | } |
Victor Stinner | cf44883 | 2010-07-28 00:15:03 +0000 | [diff] [blame] | 1418 | if (!PyUnicode_Check(value)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1419 | PyErr_Format(PyExc_TypeError, |
| 1420 | "unicode string or integer address expected instead of %s instance", |
| 1421 | value->ob_type->tp_name); |
| 1422 | return NULL; |
| 1423 | } else |
| 1424 | Py_INCREF(value); |
Daniel Stutzbach | 8515eae | 2010-08-24 21:57:33 +0000 | [diff] [blame] | 1425 | #if Py_UNICODE_SIZE == SIZEOF_WCHAR_T |
| 1426 | /* We can copy directly. Hm, are unicode objects always NUL |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1427 | terminated in Python, internally? |
| 1428 | */ |
Daniel Stutzbach | 8515eae | 2010-08-24 21:57:33 +0000 | [diff] [blame] | 1429 | *(wchar_t **)ptr = (wchar_t *) PyUnicode_AS_UNICODE(value); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1430 | return value; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1431 | #else |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1432 | { |
| 1433 | /* We must create a wchar_t* buffer from the unicode object, |
| 1434 | and keep it alive */ |
| 1435 | PyObject *keep; |
| 1436 | wchar_t *buffer; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1437 | |
Victor Stinner | beb4135b | 2010-10-07 01:02:42 +0000 | [diff] [blame] | 1438 | buffer = PyUnicode_AsWideCharString(value, NULL); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1439 | if (!buffer) { |
| 1440 | Py_DECREF(value); |
Victor Stinner | 4c2e4fa | 2010-09-29 10:37:16 +0000 | [diff] [blame] | 1441 | return NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1442 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1443 | keep = PyCapsule_New(buffer, CTYPES_CFIELD_CAPSULE_NAME_PYMEM, pymem_destructor); |
| 1444 | if (!keep) { |
| 1445 | Py_DECREF(value); |
| 1446 | PyMem_Free(buffer); |
| 1447 | return NULL; |
| 1448 | } |
| 1449 | *(wchar_t **)ptr = (wchar_t *)buffer; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1450 | Py_DECREF(value); |
| 1451 | return keep; |
| 1452 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1453 | #endif |
| 1454 | } |
| 1455 | |
| 1456 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1457 | Z_get(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1458 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1459 | wchar_t *p; |
| 1460 | p = *(wchar_t **)ptr; |
| 1461 | if (p) { |
Guido van Rossum | 360e4b8 | 2007-05-14 22:51:27 +0000 | [diff] [blame] | 1462 | #if defined(MS_WIN32) && !defined(_WIN32_WCE) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1463 | if (IsBadStringPtrW(*(wchar_t **)ptr, -1)) { |
| 1464 | PyErr_Format(PyExc_ValueError, |
| 1465 | "invalid string pointer %p", |
| 1466 | *(wchar_t **)ptr); |
| 1467 | return NULL; |
| 1468 | } |
Guido van Rossum | 360e4b8 | 2007-05-14 22:51:27 +0000 | [diff] [blame] | 1469 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1470 | return PyUnicode_FromWideChar(p, wcslen(p)); |
| 1471 | } else { |
| 1472 | Py_INCREF(Py_None); |
| 1473 | return Py_None; |
| 1474 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1475 | } |
| 1476 | #endif |
| 1477 | |
| 1478 | #ifdef MS_WIN32 |
| 1479 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1480 | BSTR_set(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1481 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1482 | BSTR bstr; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1483 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1484 | /* convert value into a PyUnicodeObject or NULL */ |
| 1485 | if (Py_None == value) { |
| 1486 | value = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1487 | } else if (PyUnicode_Check(value)) { |
| 1488 | Py_INCREF(value); /* for the descref below */ |
| 1489 | } else { |
| 1490 | PyErr_Format(PyExc_TypeError, |
| 1491 | "unicode string expected instead of %s instance", |
| 1492 | value->ob_type->tp_name); |
| 1493 | return NULL; |
| 1494 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1495 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1496 | /* create a BSTR from value */ |
| 1497 | if (value) { |
| 1498 | Py_ssize_t size = PyUnicode_GET_SIZE(value); |
| 1499 | if ((unsigned) size != size) { |
| 1500 | PyErr_SetString(PyExc_ValueError, "String too long for BSTR"); |
| 1501 | return NULL; |
| 1502 | } |
| 1503 | bstr = SysAllocStringLen(PyUnicode_AS_UNICODE(value), |
| 1504 | (unsigned)size); |
| 1505 | Py_DECREF(value); |
| 1506 | } else |
| 1507 | bstr = NULL; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1508 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1509 | /* free the previous contents, if any */ |
| 1510 | if (*(BSTR *)ptr) |
| 1511 | SysFreeString(*(BSTR *)ptr); |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 1512 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1513 | /* and store it */ |
| 1514 | *(BSTR *)ptr = bstr; |
| 1515 | |
| 1516 | /* We don't need to keep any other object */ |
| 1517 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1518 | } |
| 1519 | |
| 1520 | |
| 1521 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1522 | BSTR_get(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1523 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1524 | BSTR p; |
| 1525 | p = *(BSTR *)ptr; |
| 1526 | if (p) |
| 1527 | return PyUnicode_FromWideChar(p, SysStringLen(p)); |
| 1528 | else { |
| 1529 | /* Hm, it seems NULL pointer and zero length string are the |
| 1530 | same in BSTR, see Don Box, p 81 |
| 1531 | */ |
| 1532 | Py_INCREF(Py_None); |
| 1533 | return Py_None; |
| 1534 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1535 | } |
| 1536 | #endif |
| 1537 | |
| 1538 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1539 | P_set(void *ptr, PyObject *value, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1540 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1541 | void *v; |
| 1542 | if (value == Py_None) { |
| 1543 | *(void **)ptr = NULL; |
| 1544 | _RET(value); |
| 1545 | } |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 1546 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1547 | if (!PyLong_Check(value) && !PyLong_Check(value)) { |
| 1548 | PyErr_SetString(PyExc_TypeError, |
| 1549 | "cannot be converted to pointer"); |
| 1550 | return NULL; |
| 1551 | } |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 1552 | |
| 1553 | #if SIZEOF_VOID_P <= SIZEOF_LONG |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1554 | v = (void *)PyLong_AsUnsignedLongMask(value); |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 1555 | #else |
| 1556 | #ifndef HAVE_LONG_LONG |
| 1557 | # error "PyLong_AsVoidPtr: sizeof(void*) > sizeof(long), but no long long" |
| 1558 | #elif SIZEOF_LONG_LONG < SIZEOF_VOID_P |
| 1559 | # error "PyLong_AsVoidPtr: sizeof(PY_LONG_LONG) < sizeof(void*)" |
| 1560 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1561 | v = (void *)PyLong_AsUnsignedLongLongMask(value); |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 1562 | #endif |
| 1563 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1564 | if (PyErr_Occurred()) |
| 1565 | return NULL; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 1566 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1567 | *(void **)ptr = v; |
| 1568 | _RET(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1569 | } |
| 1570 | |
| 1571 | static PyObject * |
Guido van Rossum | cd16bf6 | 2007-06-13 18:07:49 +0000 | [diff] [blame] | 1572 | P_get(void *ptr, Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1573 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1574 | if (*(void **)ptr == NULL) { |
| 1575 | Py_INCREF(Py_None); |
| 1576 | return Py_None; |
| 1577 | } |
| 1578 | return PyLong_FromVoidPtr(*(void **)ptr); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1579 | } |
| 1580 | |
| 1581 | static struct fielddesc formattable[] = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1582 | { 's', s_set, s_get, &ffi_type_pointer}, |
| 1583 | { 'b', b_set, b_get, &ffi_type_schar}, |
| 1584 | { 'B', B_set, B_get, &ffi_type_uchar}, |
| 1585 | { 'c', c_set, c_get, &ffi_type_schar}, |
| 1586 | { 'd', d_set, d_get, &ffi_type_double, d_set_sw, d_get_sw}, |
| 1587 | { 'g', g_set, g_get, &ffi_type_longdouble}, |
| 1588 | { 'f', f_set, f_get, &ffi_type_float, f_set_sw, f_get_sw}, |
| 1589 | { 'h', h_set, h_get, &ffi_type_sshort, h_set_sw, h_get_sw}, |
| 1590 | { 'H', H_set, H_get, &ffi_type_ushort, H_set_sw, H_get_sw}, |
| 1591 | { 'i', i_set, i_get, &ffi_type_sint, i_set_sw, i_get_sw}, |
| 1592 | { 'I', I_set, I_get, &ffi_type_uint, I_set_sw, I_get_sw}, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1593 | /* XXX Hm, sizeof(int) == sizeof(long) doesn't hold on every platform */ |
| 1594 | /* As soon as we can get rid of the type codes, this is no longer a problem */ |
| 1595 | #if SIZEOF_LONG == 4 |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1596 | { 'l', l_set, l_get, &ffi_type_sint32, l_set_sw, l_get_sw}, |
| 1597 | { 'L', L_set, L_get, &ffi_type_uint32, L_set_sw, L_get_sw}, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1598 | #elif SIZEOF_LONG == 8 |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1599 | { 'l', l_set, l_get, &ffi_type_sint64, l_set_sw, l_get_sw}, |
| 1600 | { 'L', L_set, L_get, &ffi_type_uint64, L_set_sw, L_get_sw}, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1601 | #else |
| 1602 | # error |
| 1603 | #endif |
| 1604 | #ifdef HAVE_LONG_LONG |
Guido van Rossum | 8ce8a78 | 2007-11-01 19:42:39 +0000 | [diff] [blame] | 1605 | #if SIZEOF_LONG_LONG == 8 |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1606 | { 'q', q_set, q_get, &ffi_type_sint64, q_set_sw, q_get_sw}, |
| 1607 | { 'Q', Q_set, Q_get, &ffi_type_uint64, Q_set_sw, Q_get_sw}, |
Guido van Rossum | 8ce8a78 | 2007-11-01 19:42:39 +0000 | [diff] [blame] | 1608 | #else |
| 1609 | # error |
| 1610 | #endif |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1611 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1612 | { 'P', P_set, P_get, &ffi_type_pointer}, |
| 1613 | { 'z', z_set, z_get, &ffi_type_pointer}, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1614 | #ifdef CTYPES_UNICODE |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1615 | { 'u', u_set, u_get, NULL}, /* ffi_type set later */ |
| 1616 | { 'U', U_set, U_get, &ffi_type_pointer}, |
| 1617 | { 'Z', Z_set, Z_get, &ffi_type_pointer}, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1618 | #endif |
| 1619 | #ifdef MS_WIN32 |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1620 | { 'X', BSTR_set, BSTR_get, &ffi_type_pointer}, |
| 1621 | { 'v', vBOOL_set, vBOOL_get, &ffi_type_sshort}, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1622 | #endif |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 1623 | #if SIZEOF__BOOL == 1 |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1624 | { '?', bool_set, bool_get, &ffi_type_uchar}, /* Also fallback for no native _Bool support */ |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 1625 | #elif SIZEOF__BOOL == SIZEOF_SHORT |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1626 | { '?', bool_set, bool_get, &ffi_type_ushort}, |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 1627 | #elif SIZEOF__BOOL == SIZEOF_INT |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1628 | { '?', bool_set, bool_get, &ffi_type_uint, I_set_sw, I_get_sw}, |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 1629 | #elif SIZEOF__BOOL == SIZEOF_LONG |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1630 | { '?', bool_set, bool_get, &ffi_type_ulong, L_set_sw, L_get_sw}, |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 1631 | #elif SIZEOF__BOOL == SIZEOF_LONG_LONG |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1632 | { '?', bool_set, bool_get, &ffi_type_ulong, Q_set_sw, Q_get_sw}, |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 1633 | #endif /* SIZEOF__BOOL */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1634 | { 'O', O_set, O_get, &ffi_type_pointer}, |
| 1635 | { 0, NULL, NULL, NULL}, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1636 | }; |
| 1637 | |
| 1638 | /* |
| 1639 | Ideas: Implement VARIANT in this table, using 'V' code. |
| 1640 | Use '?' as code for BOOL. |
| 1641 | */ |
| 1642 | |
| 1643 | struct fielddesc * |
Thomas Heller | 34596a9 | 2009-04-24 20:50:00 +0000 | [diff] [blame] | 1644 | _ctypes_get_fielddesc(const char *fmt) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1645 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1646 | static int initialized = 0; |
| 1647 | struct fielddesc *table = formattable; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1648 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1649 | if (!initialized) { |
| 1650 | initialized = 1; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1651 | #ifdef CTYPES_UNICODE |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1652 | if (sizeof(wchar_t) == sizeof(short)) |
| 1653 | _ctypes_get_fielddesc("u")->pffi_type = &ffi_type_sshort; |
| 1654 | else if (sizeof(wchar_t) == sizeof(int)) |
| 1655 | _ctypes_get_fielddesc("u")->pffi_type = &ffi_type_sint; |
| 1656 | else if (sizeof(wchar_t) == sizeof(long)) |
| 1657 | _ctypes_get_fielddesc("u")->pffi_type = &ffi_type_slong; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1658 | #endif |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1659 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1660 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1661 | for (; table->code; ++table) { |
| 1662 | if (table->code == fmt[0]) |
| 1663 | return table; |
| 1664 | } |
| 1665 | return NULL; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1666 | } |
| 1667 | |
| 1668 | typedef struct { char c; char x; } s_char; |
| 1669 | typedef struct { char c; short x; } s_short; |
| 1670 | typedef struct { char c; int x; } s_int; |
| 1671 | typedef struct { char c; long x; } s_long; |
| 1672 | typedef struct { char c; float x; } s_float; |
| 1673 | typedef struct { char c; double x; } s_double; |
Thomas Wouters | 89d996e | 2007-09-08 17:39:28 +0000 | [diff] [blame] | 1674 | typedef struct { char c; long double x; } s_long_double; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1675 | typedef struct { char c; char *x; } s_char_p; |
| 1676 | typedef struct { char c; void *x; } s_void_p; |
| 1677 | |
| 1678 | /* |
| 1679 | #define CHAR_ALIGN (sizeof(s_char) - sizeof(char)) |
| 1680 | #define SHORT_ALIGN (sizeof(s_short) - sizeof(short)) |
| 1681 | #define INT_ALIGN (sizeof(s_int) - sizeof(int)) |
| 1682 | #define LONG_ALIGN (sizeof(s_long) - sizeof(long)) |
| 1683 | */ |
| 1684 | #define FLOAT_ALIGN (sizeof(s_float) - sizeof(float)) |
| 1685 | #define DOUBLE_ALIGN (sizeof(s_double) - sizeof(double)) |
Thomas Wouters | 89d996e | 2007-09-08 17:39:28 +0000 | [diff] [blame] | 1686 | #define LONGDOUBLE_ALIGN (sizeof(s_long_double) - sizeof(long double)) |
| 1687 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1688 | /* #define CHAR_P_ALIGN (sizeof(s_char_p) - sizeof(char*)) */ |
| 1689 | #define VOID_P_ALIGN (sizeof(s_void_p) - sizeof(void*)) |
| 1690 | |
| 1691 | /* |
| 1692 | #ifdef HAVE_USABLE_WCHAR_T |
| 1693 | typedef struct { char c; wchar_t x; } s_wchar; |
| 1694 | typedef struct { char c; wchar_t *x; } s_wchar_p; |
| 1695 | |
| 1696 | #define WCHAR_ALIGN (sizeof(s_wchar) - sizeof(wchar_t)) |
| 1697 | #define WCHAR_P_ALIGN (sizeof(s_wchar_p) - sizeof(wchar_t*)) |
| 1698 | #endif |
| 1699 | */ |
| 1700 | |
| 1701 | #ifdef HAVE_LONG_LONG |
| 1702 | typedef struct { char c; PY_LONG_LONG x; } s_long_long; |
| 1703 | #define LONG_LONG_ALIGN (sizeof(s_long_long) - sizeof(PY_LONG_LONG)) |
| 1704 | #endif |
| 1705 | |
| 1706 | /* from ffi.h: |
| 1707 | typedef struct _ffi_type |
| 1708 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1709 | size_t size; |
| 1710 | unsigned short alignment; |
| 1711 | unsigned short type; |
| 1712 | struct _ffi_type **elements; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1713 | } ffi_type; |
| 1714 | */ |
| 1715 | |
| 1716 | /* align and size are bogus for void, but they must not be zero */ |
| 1717 | ffi_type ffi_type_void = { 1, 1, FFI_TYPE_VOID }; |
| 1718 | |
| 1719 | ffi_type ffi_type_uint8 = { 1, 1, FFI_TYPE_UINT8 }; |
| 1720 | ffi_type ffi_type_sint8 = { 1, 1, FFI_TYPE_SINT8 }; |
| 1721 | |
| 1722 | ffi_type ffi_type_uint16 = { 2, 2, FFI_TYPE_UINT16 }; |
| 1723 | ffi_type ffi_type_sint16 = { 2, 2, FFI_TYPE_SINT16 }; |
| 1724 | |
| 1725 | ffi_type ffi_type_uint32 = { 4, 4, FFI_TYPE_UINT32 }; |
| 1726 | ffi_type ffi_type_sint32 = { 4, 4, FFI_TYPE_SINT32 }; |
| 1727 | |
| 1728 | ffi_type ffi_type_uint64 = { 8, LONG_LONG_ALIGN, FFI_TYPE_UINT64 }; |
| 1729 | ffi_type ffi_type_sint64 = { 8, LONG_LONG_ALIGN, FFI_TYPE_SINT64 }; |
| 1730 | |
| 1731 | ffi_type ffi_type_float = { sizeof(float), FLOAT_ALIGN, FFI_TYPE_FLOAT }; |
| 1732 | ffi_type ffi_type_double = { sizeof(double), DOUBLE_ALIGN, FFI_TYPE_DOUBLE }; |
Guido van Rossum | 8ce8a78 | 2007-11-01 19:42:39 +0000 | [diff] [blame] | 1733 | |
| 1734 | #ifdef ffi_type_longdouble |
| 1735 | #undef ffi_type_longdouble |
| 1736 | #endif |
Georg Brandl | fcaf910 | 2008-07-16 02:17:56 +0000 | [diff] [blame] | 1737 | /* This is already defined on OSX */ |
Thomas Wouters | 89d996e | 2007-09-08 17:39:28 +0000 | [diff] [blame] | 1738 | ffi_type ffi_type_longdouble = { sizeof(long double), LONGDOUBLE_ALIGN, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1739 | FFI_TYPE_LONGDOUBLE }; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1740 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1741 | ffi_type ffi_type_pointer = { sizeof(void *), VOID_P_ALIGN, FFI_TYPE_POINTER }; |
| 1742 | |
| 1743 | /*---------------- EOF ----------------*/ |