Thomas Heller | c2da994 | 2006-06-12 20:56:48 +0000 | [diff] [blame] | 1 | /***************************************************************** |
| 2 | This file should be kept compatible with Python 2.3, see PEP 291. |
| 3 | *****************************************************************/ |
| 4 | |
| 5 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 6 | /* |
| 7 | ToDo: |
| 8 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 9 | Get rid of the checker (and also the converters) field in PyCFuncPtrObject and |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 10 | StgDictObject, and replace them by slot functions in StgDictObject. |
| 11 | |
| 12 | think about a buffer-like object (memory? bytes?) |
| 13 | |
| 14 | Should POINTER(c_char) and POINTER(c_wchar) have a .value property? |
| 15 | What about c_char and c_wchar arrays then? |
| 16 | |
| 17 | Add from_mmap, from_file, from_string metaclass methods. |
| 18 | |
| 19 | Maybe we can get away with from_file (calls read) and with a from_buffer |
| 20 | method? |
| 21 | |
| 22 | And what about the to_mmap, to_file, to_str(?) methods? They would clobber |
| 23 | the namespace, probably. So, functions instead? And we already have memmove... |
| 24 | */ |
| 25 | |
| 26 | /* |
| 27 | |
| 28 | Name methods, members, getsets |
| 29 | ============================================================================== |
| 30 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 31 | PyCStructType_Type __new__(), from_address(), __mul__(), from_param() |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 32 | UnionType_Type __new__(), from_address(), __mul__(), from_param() |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 33 | PyCPointerType_Type __new__(), from_address(), __mul__(), from_param(), set_type() |
| 34 | PyCArrayType_Type __new__(), from_address(), __mul__(), from_param() |
| 35 | PyCSimpleType_Type __new__(), from_address(), __mul__(), from_param() |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 36 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 37 | PyCData_Type |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 38 | Struct_Type __new__(), __init__() |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 39 | PyCPointer_Type __new__(), __init__(), _as_parameter_, contents |
| 40 | PyCArray_Type __new__(), __init__(), _as_parameter_, __get/setitem__(), __len__() |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 41 | Simple_Type __new__(), __init__(), _as_parameter_ |
| 42 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 43 | PyCField_Type |
| 44 | PyCStgDict_Type |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 45 | |
| 46 | ============================================================================== |
| 47 | |
| 48 | class methods |
| 49 | ------------- |
| 50 | |
| 51 | It has some similarity to the byref() construct compared to pointer() |
| 52 | from_address(addr) |
| 53 | - construct an instance from a given memory block (sharing this memory block) |
| 54 | |
| 55 | from_param(obj) |
| 56 | - typecheck and convert a Python object into a C function call parameter |
| 57 | the result may be an instance of the type, or an integer or tuple |
| 58 | (typecode, value[, obj]) |
| 59 | |
| 60 | instance methods/properties |
| 61 | --------------------------- |
| 62 | |
| 63 | _as_parameter_ |
| 64 | - convert self into a C function call parameter |
| 65 | This is either an integer, or a 3-tuple (typecode, value, obj) |
| 66 | |
| 67 | functions |
| 68 | --------- |
| 69 | |
| 70 | sizeof(cdata) |
| 71 | - return the number of bytes the buffer contains |
| 72 | |
| 73 | sizeof(ctype) |
| 74 | - return the number of bytes the buffer of an instance would contain |
| 75 | |
| 76 | byref(cdata) |
| 77 | |
| 78 | addressof(cdata) |
| 79 | |
| 80 | pointer(cdata) |
| 81 | |
| 82 | POINTER(ctype) |
| 83 | |
| 84 | bytes(cdata) |
| 85 | - return the buffer contents as a sequence of bytes (which is currently a string) |
| 86 | |
| 87 | */ |
| 88 | |
| 89 | /* |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 90 | * PyCStgDict_Type |
| 91 | * PyCStructType_Type |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 92 | * UnionType_Type |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 93 | * PyCPointerType_Type |
| 94 | * PyCArrayType_Type |
| 95 | * PyCSimpleType_Type |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 96 | * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 97 | * PyCData_Type |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 98 | * Struct_Type |
| 99 | * Union_Type |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 100 | * PyCArray_Type |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 101 | * Simple_Type |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 102 | * PyCPointer_Type |
| 103 | * PyCField_Type |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 104 | * |
| 105 | */ |
| 106 | |
Thomas Heller | fffd939 | 2008-03-25 21:18:39 +0000 | [diff] [blame] | 107 | #define PY_SSIZE_T_CLEAN |
| 108 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 109 | #include "Python.h" |
| 110 | #include "structmember.h" |
| 111 | |
| 112 | #include <ffi.h> |
| 113 | #ifdef MS_WIN32 |
| 114 | #include <windows.h> |
Thomas Heller | 59feb6f | 2006-03-22 12:59:53 +0000 | [diff] [blame] | 115 | #include <malloc.h> |
| 116 | #ifndef IS_INTRESOURCE |
| 117 | #define IS_INTRESOURCE(x) (((size_t)(x) >> 16) == 0) |
| 118 | #endif |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 119 | # ifdef _WIN32_WCE |
| 120 | /* Unlike desktop Windows, WinCE has both W and A variants of |
| 121 | GetProcAddress, but the default W version is not what we want */ |
| 122 | # undef GetProcAddress |
| 123 | # define GetProcAddress GetProcAddressA |
| 124 | # endif |
| 125 | #else |
| 126 | #include "ctypes_dlfcn.h" |
| 127 | #endif |
| 128 | #include "ctypes.h" |
| 129 | |
| 130 | PyObject *PyExc_ArgError; |
Thomas Heller | 046e6a4 | 2008-04-14 16:10:07 +0000 | [diff] [blame] | 131 | |
| 132 | /* This dict maps ctypes types to POINTER types */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 133 | PyObject *_ctypes_ptrtype_cache; |
Thomas Heller | 046e6a4 | 2008-04-14 16:10:07 +0000 | [diff] [blame] | 134 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 135 | static PyTypeObject Simple_Type; |
| 136 | |
Thomas Heller | a06a1a8 | 2008-02-13 20:21:53 +0000 | [diff] [blame] | 137 | /* a callable object used for unpickling */ |
| 138 | static PyObject *_unpickle; |
| 139 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 140 | char *_ctypes_conversion_encoding = NULL; |
| 141 | char *_ctypes_conversion_errors = NULL; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 142 | |
| 143 | |
Thomas Heller | e4c03e4 | 2008-01-24 18:36:27 +0000 | [diff] [blame] | 144 | /****************************************************************/ |
| 145 | |
Thomas Heller | 8e8ba15 | 2008-04-04 08:35:44 +0000 | [diff] [blame] | 146 | #if (PY_VERSION_HEX < 0x02040000) |
| 147 | /* Only in Python 2.4 and up */ |
| 148 | static PyObject * |
| 149 | PyTuple_Pack(int n, ...) |
| 150 | { |
| 151 | int i; |
| 152 | PyObject *o; |
| 153 | PyObject *result; |
| 154 | PyObject **items; |
| 155 | va_list vargs; |
| 156 | |
| 157 | va_start(vargs, n); |
| 158 | result = PyTuple_New(n); |
| 159 | if (result == NULL) |
| 160 | return NULL; |
| 161 | items = ((PyTupleObject *)result)->ob_item; |
| 162 | for (i = 0; i < n; i++) { |
| 163 | o = va_arg(vargs, PyObject *); |
| 164 | Py_INCREF(o); |
| 165 | items[i] = o; |
| 166 | } |
| 167 | va_end(vargs); |
| 168 | return result; |
| 169 | } |
| 170 | #endif |
| 171 | |
| 172 | /****************************************************************/ |
| 173 | |
Thomas Heller | e4c03e4 | 2008-01-24 18:36:27 +0000 | [diff] [blame] | 174 | typedef struct { |
| 175 | PyObject_HEAD |
| 176 | PyObject *key; |
| 177 | PyObject *dict; |
| 178 | } DictRemoverObject; |
| 179 | |
| 180 | static void |
| 181 | _DictRemover_dealloc(PyObject *_self) |
| 182 | { |
| 183 | DictRemoverObject *self = (DictRemoverObject *)_self; |
| 184 | Py_XDECREF(self->key); |
| 185 | Py_XDECREF(self->dict); |
| 186 | Py_TYPE(self)->tp_free(_self); |
| 187 | } |
| 188 | |
| 189 | static PyObject * |
| 190 | _DictRemover_call(PyObject *_self, PyObject *args, PyObject *kw) |
| 191 | { |
| 192 | DictRemoverObject *self = (DictRemoverObject *)_self; |
| 193 | if (self->key && self->dict) { |
| 194 | if (-1 == PyDict_DelItem(self->dict, self->key)) |
| 195 | /* XXX Error context */ |
| 196 | PyErr_WriteUnraisable(Py_None); |
| 197 | Py_DECREF(self->key); |
| 198 | self->key = NULL; |
| 199 | Py_DECREF(self->dict); |
| 200 | self->dict = NULL; |
| 201 | } |
| 202 | Py_INCREF(Py_None); |
| 203 | return Py_None; |
| 204 | } |
| 205 | |
| 206 | static PyTypeObject DictRemover_Type = { |
| 207 | PyVarObject_HEAD_INIT(NULL, 0) |
| 208 | "_ctypes.DictRemover", /* tp_name */ |
| 209 | sizeof(DictRemoverObject), /* tp_basicsize */ |
| 210 | 0, /* tp_itemsize */ |
| 211 | _DictRemover_dealloc, /* tp_dealloc */ |
| 212 | 0, /* tp_print */ |
| 213 | 0, /* tp_getattr */ |
| 214 | 0, /* tp_setattr */ |
| 215 | 0, /* tp_compare */ |
| 216 | 0, /* tp_repr */ |
| 217 | 0, /* tp_as_number */ |
| 218 | 0, /* tp_as_sequence */ |
| 219 | 0, /* tp_as_mapping */ |
| 220 | 0, /* tp_hash */ |
| 221 | _DictRemover_call, /* tp_call */ |
| 222 | 0, /* tp_str */ |
| 223 | 0, /* tp_getattro */ |
| 224 | 0, /* tp_setattro */ |
| 225 | 0, /* tp_as_buffer */ |
| 226 | /* XXX should participate in GC? */ |
| 227 | Py_TPFLAGS_DEFAULT, /* tp_flags */ |
| 228 | "deletes a key from a dictionary", /* tp_doc */ |
| 229 | 0, /* tp_traverse */ |
| 230 | 0, /* tp_clear */ |
| 231 | 0, /* tp_richcompare */ |
| 232 | 0, /* tp_weaklistoffset */ |
| 233 | 0, /* tp_iter */ |
| 234 | 0, /* tp_iternext */ |
| 235 | 0, /* tp_methods */ |
| 236 | 0, /* tp_members */ |
| 237 | 0, /* tp_getset */ |
| 238 | 0, /* tp_base */ |
| 239 | 0, /* tp_dict */ |
| 240 | 0, /* tp_descr_get */ |
| 241 | 0, /* tp_descr_set */ |
| 242 | 0, /* tp_dictoffset */ |
| 243 | 0, /* tp_init */ |
| 244 | 0, /* tp_alloc */ |
Thomas Heller | 41e22ff | 2008-03-14 21:06:21 +0000 | [diff] [blame] | 245 | 0, /* tp_new */ |
Thomas Heller | e4c03e4 | 2008-01-24 18:36:27 +0000 | [diff] [blame] | 246 | 0, /* tp_free */ |
| 247 | }; |
| 248 | |
| 249 | int |
| 250 | PyDict_SetItemProxy(PyObject *dict, PyObject *key, PyObject *item) |
| 251 | { |
| 252 | PyObject *obj; |
| 253 | DictRemoverObject *remover; |
| 254 | PyObject *proxy; |
| 255 | int result; |
| 256 | |
| 257 | obj = PyObject_CallObject((PyObject *)&DictRemover_Type, NULL); |
| 258 | if (obj == NULL) |
| 259 | return -1; |
| 260 | |
| 261 | remover = (DictRemoverObject *)obj; |
| 262 | assert(remover->key == NULL); |
| 263 | assert(remover->dict == NULL); |
| 264 | Py_INCREF(key); |
| 265 | remover->key = key; |
| 266 | Py_INCREF(dict); |
| 267 | remover->dict = dict; |
| 268 | |
| 269 | proxy = PyWeakref_NewProxy(item, obj); |
| 270 | Py_DECREF(obj); |
| 271 | if (proxy == NULL) |
| 272 | return -1; |
| 273 | |
| 274 | result = PyDict_SetItem(dict, key, proxy); |
| 275 | Py_DECREF(proxy); |
| 276 | return result; |
| 277 | } |
| 278 | |
| 279 | PyObject * |
| 280 | PyDict_GetItemProxy(PyObject *dict, PyObject *key) |
| 281 | { |
| 282 | PyObject *result; |
| 283 | PyObject *item = PyDict_GetItem(dict, key); |
| 284 | |
| 285 | if (item == NULL) |
| 286 | return NULL; |
| 287 | if (!PyWeakref_CheckProxy(item)) |
| 288 | return item; |
| 289 | result = PyWeakref_GET_OBJECT(item); |
| 290 | if (result == Py_None) |
| 291 | return NULL; |
| 292 | return result; |
| 293 | } |
| 294 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 295 | /******************************************************************/ |
| 296 | /* |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 297 | Allocate a memory block for a pep3118 format string, copy prefix (if |
| 298 | non-null) and suffix into it. Returns NULL on failure, with the error |
| 299 | indicator set. If called with a suffix of NULL the error indicator must |
| 300 | already be set. |
| 301 | */ |
| 302 | char * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 303 | _ctypes_alloc_format_string(const char *prefix, const char *suffix) |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 304 | { |
| 305 | size_t len; |
| 306 | char *result; |
| 307 | |
| 308 | if (suffix == NULL) { |
| 309 | assert(PyErr_Occurred()); |
| 310 | return NULL; |
| 311 | } |
| 312 | len = strlen(suffix); |
| 313 | if (prefix) |
| 314 | len += strlen(prefix); |
| 315 | result = PyMem_Malloc(len + 1); |
| 316 | if (result == NULL) |
| 317 | return NULL; |
| 318 | if (prefix) |
| 319 | strcpy(result, prefix); |
| 320 | else |
| 321 | result[0] = '\0'; |
| 322 | strcat(result, suffix); |
| 323 | return result; |
| 324 | } |
| 325 | |
| 326 | /* |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 327 | PyCStructType_Type - a meta type/class. Creating a new class using this one as |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 328 | __metaclass__ will call the contructor StructUnionType_new. It replaces the |
| 329 | tp_dict member with a new instance of StgDict, and initializes the C |
| 330 | accessible fields somehow. |
| 331 | */ |
| 332 | |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 333 | static PyCArgObject * |
| 334 | StructUnionType_paramfunc(CDataObject *self) |
| 335 | { |
| 336 | PyCArgObject *parg; |
| 337 | StgDictObject *stgdict; |
| 338 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 339 | parg = PyCArgObject_new(); |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 340 | if (parg == NULL) |
| 341 | return NULL; |
| 342 | |
| 343 | parg->tag = 'V'; |
| 344 | stgdict = PyObject_stgdict((PyObject *)self); |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 345 | assert(stgdict); /* Cannot be NULL for structure/union instances */ |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 346 | parg->pffi_type = &stgdict->ffi_type_pointer; |
| 347 | /* For structure parameters (by value), parg->value doesn't contain the structure |
| 348 | data itself, instead parg->value.p *points* to the structure's data |
| 349 | See also _ctypes.c, function _call_function_pointer(). |
| 350 | */ |
| 351 | parg->value.p = self->b_ptr; |
| 352 | parg->size = self->b_size; |
| 353 | Py_INCREF(self); |
| 354 | parg->obj = (PyObject *)self; |
| 355 | return parg; |
| 356 | } |
| 357 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 358 | static PyObject * |
| 359 | StructUnionType_new(PyTypeObject *type, PyObject *args, PyObject *kwds, int isStruct) |
| 360 | { |
| 361 | PyTypeObject *result; |
| 362 | PyObject *fields; |
| 363 | StgDictObject *dict; |
| 364 | |
| 365 | /* create the new instance (which is a class, |
| 366 | since we are a metatype!) */ |
| 367 | result = (PyTypeObject *)PyType_Type.tp_new(type, args, kwds); |
| 368 | if (!result) |
| 369 | return NULL; |
| 370 | |
| 371 | /* keep this for bw compatibility */ |
| 372 | if (PyDict_GetItemString(result->tp_dict, "_abstract_")) |
| 373 | return (PyObject *)result; |
| 374 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 375 | dict = (StgDictObject *)PyObject_CallObject((PyObject *)&PyCStgDict_Type, NULL); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 376 | if (!dict) { |
| 377 | Py_DECREF(result); |
| 378 | return NULL; |
| 379 | } |
| 380 | /* replace the class dict by our updated stgdict, which holds info |
| 381 | about storage requirements of the instances */ |
| 382 | if (-1 == PyDict_Update((PyObject *)dict, result->tp_dict)) { |
| 383 | Py_DECREF(result); |
| 384 | Py_DECREF((PyObject *)dict); |
| 385 | return NULL; |
| 386 | } |
| 387 | Py_DECREF(result->tp_dict); |
| 388 | result->tp_dict = (PyObject *)dict; |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 389 | dict->format = _ctypes_alloc_format_string(NULL, "B"); |
Thomas Heller | c0b2a80 | 2008-07-15 17:03:08 +0000 | [diff] [blame] | 390 | if (dict->format == NULL) { |
| 391 | Py_DECREF(result); |
| 392 | return NULL; |
| 393 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 394 | |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 395 | dict->paramfunc = StructUnionType_paramfunc; |
| 396 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 397 | fields = PyDict_GetItemString((PyObject *)dict, "_fields_"); |
| 398 | if (!fields) { |
| 399 | StgDictObject *basedict = PyType_stgdict((PyObject *)result->tp_base); |
| 400 | |
| 401 | if (basedict == NULL) |
| 402 | return (PyObject *)result; |
| 403 | /* copy base dict */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 404 | if (-1 == PyCStgDict_clone(dict, basedict)) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 405 | Py_DECREF(result); |
| 406 | return NULL; |
| 407 | } |
| 408 | dict->flags &= ~DICTFLAG_FINAL; /* clear the 'final' flag in the subclass dict */ |
| 409 | basedict->flags |= DICTFLAG_FINAL; /* set the 'final' flag in the baseclass dict */ |
| 410 | return (PyObject *)result; |
| 411 | } |
| 412 | |
| 413 | if (-1 == PyObject_SetAttrString((PyObject *)result, "_fields_", fields)) { |
| 414 | Py_DECREF(result); |
| 415 | return NULL; |
| 416 | } |
| 417 | return (PyObject *)result; |
| 418 | } |
| 419 | |
| 420 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 421 | PyCStructType_new(PyTypeObject *type, PyObject *args, PyObject *kwds) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 422 | { |
| 423 | return StructUnionType_new(type, args, kwds, 1); |
| 424 | } |
| 425 | |
| 426 | static PyObject * |
| 427 | UnionType_new(PyTypeObject *type, PyObject *args, PyObject *kwds) |
| 428 | { |
| 429 | return StructUnionType_new(type, args, kwds, 0); |
| 430 | } |
| 431 | |
| 432 | static char from_address_doc[] = |
| 433 | "C.from_address(integer) -> C instance\naccess a C instance at the specified address"; |
| 434 | |
| 435 | static PyObject * |
| 436 | CDataType_from_address(PyObject *type, PyObject *value) |
| 437 | { |
| 438 | void *buf; |
| 439 | if (!PyInt_Check(value) && !PyLong_Check(value)) { |
| 440 | PyErr_SetString(PyExc_TypeError, |
| 441 | "integer expected"); |
| 442 | return NULL; |
| 443 | } |
| 444 | buf = (void *)PyLong_AsVoidPtr(value); |
| 445 | if (PyErr_Occurred()) |
| 446 | return NULL; |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 447 | return PyCData_AtAddress(type, buf); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 448 | } |
| 449 | |
Thomas Heller | 6ad5fbb | 2008-04-25 15:44:16 +0000 | [diff] [blame] | 450 | static char from_buffer_doc[] = |
| 451 | "C.from_buffer(object, offset=0) -> C instance\ncreate a C instance from a writeable buffer"; |
| 452 | |
| 453 | static int |
| 454 | KeepRef(CDataObject *target, Py_ssize_t index, PyObject *keep); |
| 455 | |
| 456 | static PyObject * |
| 457 | CDataType_from_buffer(PyObject *type, PyObject *args) |
| 458 | { |
| 459 | void *buffer; |
| 460 | Py_ssize_t buffer_len; |
| 461 | Py_ssize_t offset = 0; |
| 462 | PyObject *obj, *result; |
| 463 | StgDictObject *dict = PyType_stgdict(type); |
| 464 | assert (dict); |
| 465 | |
| 466 | if (!PyArg_ParseTuple(args, |
| 467 | #if (PY_VERSION_HEX < 0x02050000) |
| 468 | "O|i:from_buffer", |
| 469 | #else |
| 470 | "O|n:from_buffer", |
| 471 | #endif |
| 472 | &obj, &offset)) |
| 473 | return NULL; |
| 474 | |
| 475 | if (-1 == PyObject_AsWriteBuffer(obj, &buffer, &buffer_len)) |
| 476 | return NULL; |
| 477 | |
| 478 | if (offset < 0) { |
| 479 | PyErr_SetString(PyExc_ValueError, |
Mark Dickinson | cf4ad76 | 2009-05-20 17:55:31 +0000 | [diff] [blame] | 480 | "offset cannot be negative"); |
Thomas Heller | 6ad5fbb | 2008-04-25 15:44:16 +0000 | [diff] [blame] | 481 | return NULL; |
| 482 | } |
| 483 | if (dict->size > buffer_len - offset) { |
| 484 | PyErr_Format(PyExc_ValueError, |
| 485 | #if (PY_VERSION_HEX < 0x02050000) |
| 486 | "Buffer size too small (%d instead of at least %d bytes)", |
| 487 | #else |
| 488 | "Buffer size too small (%zd instead of at least %zd bytes)", |
| 489 | #endif |
| 490 | buffer_len, dict->size + offset); |
| 491 | return NULL; |
| 492 | } |
| 493 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 494 | result = PyCData_AtAddress(type, (char *)buffer + offset); |
Thomas Heller | 6ad5fbb | 2008-04-25 15:44:16 +0000 | [diff] [blame] | 495 | if (result == NULL) |
| 496 | return NULL; |
| 497 | |
| 498 | Py_INCREF(obj); |
| 499 | if (-1 == KeepRef((CDataObject *)result, -1, obj)) { |
| 500 | Py_DECREF(result); |
| 501 | return NULL; |
| 502 | } |
| 503 | return result; |
| 504 | } |
| 505 | |
| 506 | static char from_buffer_copy_doc[] = |
| 507 | "C.from_buffer_copy(object, offset=0) -> C instance\ncreate a C instance from a readable buffer"; |
| 508 | |
| 509 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 510 | GenericPyCData_new(PyTypeObject *type, PyObject *args, PyObject *kwds); |
Thomas Heller | 6ad5fbb | 2008-04-25 15:44:16 +0000 | [diff] [blame] | 511 | |
| 512 | static PyObject * |
| 513 | CDataType_from_buffer_copy(PyObject *type, PyObject *args) |
| 514 | { |
Thomas Heller | a52b244 | 2008-05-29 19:18:12 +0000 | [diff] [blame] | 515 | const void *buffer; |
Thomas Heller | 6ad5fbb | 2008-04-25 15:44:16 +0000 | [diff] [blame] | 516 | Py_ssize_t buffer_len; |
| 517 | Py_ssize_t offset = 0; |
| 518 | PyObject *obj, *result; |
| 519 | StgDictObject *dict = PyType_stgdict(type); |
| 520 | assert (dict); |
| 521 | |
| 522 | if (!PyArg_ParseTuple(args, |
| 523 | #if (PY_VERSION_HEX < 0x02050000) |
| 524 | "O|i:from_buffer", |
| 525 | #else |
| 526 | "O|n:from_buffer", |
| 527 | #endif |
| 528 | &obj, &offset)) |
| 529 | return NULL; |
| 530 | |
| 531 | if (-1 == PyObject_AsReadBuffer(obj, &buffer, &buffer_len)) |
| 532 | return NULL; |
| 533 | |
| 534 | if (offset < 0) { |
| 535 | PyErr_SetString(PyExc_ValueError, |
Mark Dickinson | cf4ad76 | 2009-05-20 17:55:31 +0000 | [diff] [blame] | 536 | "offset cannot be negative"); |
Thomas Heller | 6ad5fbb | 2008-04-25 15:44:16 +0000 | [diff] [blame] | 537 | return NULL; |
| 538 | } |
| 539 | |
| 540 | if (dict->size > buffer_len - offset) { |
| 541 | PyErr_Format(PyExc_ValueError, |
| 542 | #if (PY_VERSION_HEX < 0x02050000) |
| 543 | "Buffer size too small (%d instead of at least %d bytes)", |
| 544 | #else |
| 545 | "Buffer size too small (%zd instead of at least %zd bytes)", |
| 546 | #endif |
| 547 | buffer_len, dict->size + offset); |
| 548 | return NULL; |
| 549 | } |
| 550 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 551 | result = GenericPyCData_new((PyTypeObject *)type, NULL, NULL); |
Thomas Heller | 6ad5fbb | 2008-04-25 15:44:16 +0000 | [diff] [blame] | 552 | if (result == NULL) |
| 553 | return NULL; |
| 554 | memcpy(((CDataObject *)result)->b_ptr, |
| 555 | (char *)buffer+offset, dict->size); |
| 556 | return result; |
| 557 | } |
| 558 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 559 | static char in_dll_doc[] = |
| 560 | "C.in_dll(dll, name) -> C instance\naccess a C instance in a dll"; |
| 561 | |
| 562 | static PyObject * |
| 563 | CDataType_in_dll(PyObject *type, PyObject *args) |
| 564 | { |
| 565 | PyObject *dll; |
| 566 | char *name; |
| 567 | PyObject *obj; |
| 568 | void *handle; |
| 569 | void *address; |
| 570 | |
| 571 | if (!PyArg_ParseTuple(args, "Os:in_dll", &dll, &name)) |
| 572 | return NULL; |
| 573 | |
| 574 | obj = PyObject_GetAttrString(dll, "_handle"); |
| 575 | if (!obj) |
| 576 | return NULL; |
| 577 | if (!PyInt_Check(obj) && !PyLong_Check(obj)) { |
| 578 | PyErr_SetString(PyExc_TypeError, |
| 579 | "the _handle attribute of the second argument must be an integer"); |
| 580 | Py_DECREF(obj); |
| 581 | return NULL; |
| 582 | } |
| 583 | handle = (void *)PyLong_AsVoidPtr(obj); |
| 584 | Py_DECREF(obj); |
| 585 | if (PyErr_Occurred()) { |
| 586 | PyErr_SetString(PyExc_ValueError, |
| 587 | "could not convert the _handle attribute to a pointer"); |
| 588 | return NULL; |
| 589 | } |
| 590 | |
| 591 | #ifdef MS_WIN32 |
| 592 | address = (void *)GetProcAddress(handle, name); |
| 593 | if (!address) { |
| 594 | PyErr_Format(PyExc_ValueError, |
| 595 | "symbol '%s' not found", |
| 596 | name); |
| 597 | return NULL; |
| 598 | } |
| 599 | #else |
| 600 | address = (void *)ctypes_dlsym(handle, name); |
| 601 | if (!address) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 602 | #ifdef __CYGWIN__ |
| 603 | /* dlerror() isn't very helpful on cygwin */ |
Georg Brandl | 2c07929 | 2009-02-13 11:10:04 +0000 | [diff] [blame] | 604 | PyErr_Format(PyExc_ValueError, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 605 | "symbol '%s' not found (%s) ", |
Georg Brandl | 2c07929 | 2009-02-13 11:10:04 +0000 | [diff] [blame] | 606 | name); |
| 607 | #else |
| 608 | PyErr_SetString(PyExc_ValueError, ctypes_dlerror()); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 609 | #endif |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 610 | return NULL; |
| 611 | } |
| 612 | #endif |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 613 | return PyCData_AtAddress(type, address); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 614 | } |
| 615 | |
| 616 | static char from_param_doc[] = |
| 617 | "Convert a Python object into a function call parameter."; |
| 618 | |
| 619 | static PyObject * |
| 620 | CDataType_from_param(PyObject *type, PyObject *value) |
| 621 | { |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 622 | PyObject *as_parameter; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 623 | if (1 == PyObject_IsInstance(value, type)) { |
| 624 | Py_INCREF(value); |
| 625 | return value; |
| 626 | } |
| 627 | if (PyCArg_CheckExact(value)) { |
| 628 | PyCArgObject *p = (PyCArgObject *)value; |
| 629 | PyObject *ob = p->obj; |
Thomas Heller | 4c9dfc8 | 2006-03-16 19:26:21 +0000 | [diff] [blame] | 630 | const char *ob_name; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 631 | StgDictObject *dict; |
| 632 | dict = PyType_stgdict(type); |
| 633 | |
| 634 | /* If we got a PyCArgObject, we must check if the object packed in it |
| 635 | is an instance of the type's dict->proto */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 636 | if(dict && ob |
| 637 | && PyObject_IsInstance(ob, dict->proto)) { |
| 638 | Py_INCREF(value); |
| 639 | return value; |
| 640 | } |
Christian Heimes | e93237d | 2007-12-19 02:37:44 +0000 | [diff] [blame] | 641 | ob_name = (ob) ? Py_TYPE(ob)->tp_name : "???"; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 642 | PyErr_Format(PyExc_TypeError, |
| 643 | "expected %s instance instead of pointer to %s", |
Thomas Heller | 4c9dfc8 | 2006-03-16 19:26:21 +0000 | [diff] [blame] | 644 | ((PyTypeObject *)type)->tp_name, ob_name); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 645 | return NULL; |
| 646 | } |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 647 | |
| 648 | as_parameter = PyObject_GetAttrString(value, "_as_parameter_"); |
| 649 | if (as_parameter) { |
| 650 | value = CDataType_from_param(type, as_parameter); |
| 651 | Py_DECREF(as_parameter); |
| 652 | return value; |
| 653 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 654 | PyErr_Format(PyExc_TypeError, |
| 655 | "expected %s instance instead of %s", |
| 656 | ((PyTypeObject *)type)->tp_name, |
Christian Heimes | e93237d | 2007-12-19 02:37:44 +0000 | [diff] [blame] | 657 | Py_TYPE(value)->tp_name); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 658 | return NULL; |
| 659 | } |
| 660 | |
| 661 | static PyMethodDef CDataType_methods[] = { |
| 662 | { "from_param", CDataType_from_param, METH_O, from_param_doc }, |
| 663 | { "from_address", CDataType_from_address, METH_O, from_address_doc }, |
Thomas Heller | 6ad5fbb | 2008-04-25 15:44:16 +0000 | [diff] [blame] | 664 | { "from_buffer", CDataType_from_buffer, METH_VARARGS, from_buffer_doc, }, |
| 665 | { "from_buffer_copy", CDataType_from_buffer_copy, METH_VARARGS, from_buffer_copy_doc, }, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 666 | { "in_dll", CDataType_in_dll, METH_VARARGS, in_dll_doc }, |
| 667 | { NULL, NULL }, |
| 668 | }; |
| 669 | |
| 670 | static PyObject * |
Thomas Heller | fe8f862 | 2006-03-14 19:53:09 +0000 | [diff] [blame] | 671 | CDataType_repeat(PyObject *self, Py_ssize_t length) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 672 | { |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 673 | if (length < 0) |
| 674 | return PyErr_Format(PyExc_ValueError, |
| 675 | #if (PY_VERSION_HEX < 0x02050000) |
| 676 | "Array length must be >= 0, not %d", |
| 677 | #else |
| 678 | "Array length must be >= 0, not %zd", |
| 679 | #endif |
| 680 | length); |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 681 | return PyCArrayType_from_ctype(self, length); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 682 | } |
| 683 | |
| 684 | static PySequenceMethods CDataType_as_sequence = { |
| 685 | 0, /* inquiry sq_length; */ |
| 686 | 0, /* binaryfunc sq_concat; */ |
| 687 | CDataType_repeat, /* intargfunc sq_repeat; */ |
| 688 | 0, /* intargfunc sq_item; */ |
| 689 | 0, /* intintargfunc sq_slice; */ |
| 690 | 0, /* intobjargproc sq_ass_item; */ |
| 691 | 0, /* intintobjargproc sq_ass_slice; */ |
| 692 | 0, /* objobjproc sq_contains; */ |
| 693 | |
| 694 | 0, /* binaryfunc sq_inplace_concat; */ |
| 695 | 0, /* intargfunc sq_inplace_repeat; */ |
| 696 | }; |
| 697 | |
| 698 | static int |
| 699 | CDataType_clear(PyTypeObject *self) |
| 700 | { |
| 701 | StgDictObject *dict = PyType_stgdict((PyObject *)self); |
| 702 | if (dict) |
| 703 | Py_CLEAR(dict->proto); |
| 704 | return PyType_Type.tp_clear((PyObject *)self); |
| 705 | } |
| 706 | |
| 707 | static int |
| 708 | CDataType_traverse(PyTypeObject *self, visitproc visit, void *arg) |
| 709 | { |
| 710 | StgDictObject *dict = PyType_stgdict((PyObject *)self); |
| 711 | if (dict) |
| 712 | Py_VISIT(dict->proto); |
| 713 | return PyType_Type.tp_traverse((PyObject *)self, visit, arg); |
| 714 | } |
| 715 | |
| 716 | static int |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 717 | PyCStructType_setattro(PyObject *self, PyObject *key, PyObject *value) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 718 | { |
| 719 | /* XXX Should we disallow deleting _fields_? */ |
Amaury Forgeot d'Arc | 7cdf5f5 | 2008-01-14 01:07:27 +0000 | [diff] [blame] | 720 | if (-1 == PyType_Type.tp_setattro(self, key, value)) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 721 | return -1; |
| 722 | |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 723 | if (value && PyString_Check(key) && |
| 724 | 0 == strcmp(PyString_AS_STRING(key), "_fields_")) |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 725 | return PyCStructUnionType_update_stgdict(self, value, 1); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 726 | return 0; |
| 727 | } |
| 728 | |
| 729 | |
| 730 | static int |
| 731 | UnionType_setattro(PyObject *self, PyObject *key, PyObject *value) |
| 732 | { |
| 733 | /* XXX Should we disallow deleting _fields_? */ |
| 734 | if (-1 == PyObject_GenericSetAttr(self, key, value)) |
| 735 | return -1; |
| 736 | |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 737 | if (PyString_Check(key) && |
| 738 | 0 == strcmp(PyString_AS_STRING(key), "_fields_")) |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 739 | return PyCStructUnionType_update_stgdict(self, value, 0); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 740 | return 0; |
| 741 | } |
| 742 | |
| 743 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 744 | PyTypeObject PyCStructType_Type = { |
Martin v. Löwis | 6819210 | 2007-07-21 06:55:02 +0000 | [diff] [blame] | 745 | PyVarObject_HEAD_INIT(NULL, 0) |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 746 | "_ctypes.PyCStructType", /* tp_name */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 747 | 0, /* tp_basicsize */ |
| 748 | 0, /* tp_itemsize */ |
| 749 | 0, /* tp_dealloc */ |
| 750 | 0, /* tp_print */ |
| 751 | 0, /* tp_getattr */ |
| 752 | 0, /* tp_setattr */ |
| 753 | 0, /* tp_compare */ |
| 754 | 0, /* tp_repr */ |
| 755 | 0, /* tp_as_number */ |
| 756 | &CDataType_as_sequence, /* tp_as_sequence */ |
| 757 | 0, /* tp_as_mapping */ |
| 758 | 0, /* tp_hash */ |
| 759 | 0, /* tp_call */ |
| 760 | 0, /* tp_str */ |
| 761 | 0, /* tp_getattro */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 762 | PyCStructType_setattro, /* tp_setattro */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 763 | 0, /* tp_as_buffer */ |
| 764 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC, /* tp_flags */ |
| 765 | "metatype for the CData Objects", /* tp_doc */ |
| 766 | (traverseproc)CDataType_traverse, /* tp_traverse */ |
| 767 | (inquiry)CDataType_clear, /* tp_clear */ |
| 768 | 0, /* tp_richcompare */ |
| 769 | 0, /* tp_weaklistoffset */ |
| 770 | 0, /* tp_iter */ |
| 771 | 0, /* tp_iternext */ |
| 772 | CDataType_methods, /* tp_methods */ |
| 773 | 0, /* tp_members */ |
| 774 | 0, /* tp_getset */ |
| 775 | 0, /* tp_base */ |
| 776 | 0, /* tp_dict */ |
| 777 | 0, /* tp_descr_get */ |
| 778 | 0, /* tp_descr_set */ |
| 779 | 0, /* tp_dictoffset */ |
| 780 | 0, /* tp_init */ |
| 781 | 0, /* tp_alloc */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 782 | PyCStructType_new, /* tp_new */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 783 | 0, /* tp_free */ |
| 784 | }; |
| 785 | |
| 786 | static PyTypeObject UnionType_Type = { |
Martin v. Löwis | 6819210 | 2007-07-21 06:55:02 +0000 | [diff] [blame] | 787 | PyVarObject_HEAD_INIT(NULL, 0) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 788 | "_ctypes.UnionType", /* tp_name */ |
| 789 | 0, /* tp_basicsize */ |
| 790 | 0, /* tp_itemsize */ |
| 791 | 0, /* tp_dealloc */ |
| 792 | 0, /* tp_print */ |
| 793 | 0, /* tp_getattr */ |
| 794 | 0, /* tp_setattr */ |
| 795 | 0, /* tp_compare */ |
| 796 | 0, /* tp_repr */ |
| 797 | 0, /* tp_as_number */ |
| 798 | &CDataType_as_sequence, /* tp_as_sequence */ |
| 799 | 0, /* tp_as_mapping */ |
| 800 | 0, /* tp_hash */ |
| 801 | 0, /* tp_call */ |
| 802 | 0, /* tp_str */ |
| 803 | 0, /* tp_getattro */ |
| 804 | UnionType_setattro, /* tp_setattro */ |
| 805 | 0, /* tp_as_buffer */ |
| 806 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC, /* tp_flags */ |
| 807 | "metatype for the CData Objects", /* tp_doc */ |
| 808 | (traverseproc)CDataType_traverse, /* tp_traverse */ |
| 809 | (inquiry)CDataType_clear, /* tp_clear */ |
| 810 | 0, /* tp_richcompare */ |
| 811 | 0, /* tp_weaklistoffset */ |
| 812 | 0, /* tp_iter */ |
| 813 | 0, /* tp_iternext */ |
| 814 | CDataType_methods, /* tp_methods */ |
| 815 | 0, /* tp_members */ |
| 816 | 0, /* tp_getset */ |
| 817 | 0, /* tp_base */ |
| 818 | 0, /* tp_dict */ |
| 819 | 0, /* tp_descr_get */ |
| 820 | 0, /* tp_descr_set */ |
| 821 | 0, /* tp_dictoffset */ |
| 822 | 0, /* tp_init */ |
| 823 | 0, /* tp_alloc */ |
| 824 | UnionType_new, /* tp_new */ |
| 825 | 0, /* tp_free */ |
| 826 | }; |
| 827 | |
| 828 | |
| 829 | /******************************************************************/ |
| 830 | |
| 831 | /* |
| 832 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 833 | The PyCPointerType_Type metaclass must ensure that the subclass of Pointer can be |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 834 | created. It must check for a _type_ attribute in the class. Since are no |
| 835 | runtime created properties, a CField is probably *not* needed ? |
| 836 | |
| 837 | class IntPointer(Pointer): |
| 838 | _type_ = "i" |
| 839 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 840 | The PyCPointer_Type provides the functionality: a contents method/property, a |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 841 | size property/method, and the sequence protocol. |
| 842 | |
| 843 | */ |
| 844 | |
| 845 | static int |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 846 | PyCPointerType_SetProto(StgDictObject *stgdict, PyObject *proto) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 847 | { |
Thomas Heller | 4c9dfc8 | 2006-03-16 19:26:21 +0000 | [diff] [blame] | 848 | if (!proto || !PyType_Check(proto)) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 849 | PyErr_SetString(PyExc_TypeError, |
| 850 | "_type_ must be a type"); |
| 851 | return -1; |
| 852 | } |
Thomas Heller | 4c9dfc8 | 2006-03-16 19:26:21 +0000 | [diff] [blame] | 853 | if (!PyType_stgdict(proto)) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 854 | PyErr_SetString(PyExc_TypeError, |
| 855 | "_type_ must have storage info"); |
| 856 | return -1; |
| 857 | } |
| 858 | Py_INCREF(proto); |
| 859 | Py_XDECREF(stgdict->proto); |
| 860 | stgdict->proto = proto; |
| 861 | return 0; |
| 862 | } |
| 863 | |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 864 | static PyCArgObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 865 | PyCPointerType_paramfunc(CDataObject *self) |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 866 | { |
| 867 | PyCArgObject *parg; |
| 868 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 869 | parg = PyCArgObject_new(); |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 870 | if (parg == NULL) |
| 871 | return NULL; |
| 872 | |
| 873 | parg->tag = 'P'; |
| 874 | parg->pffi_type = &ffi_type_pointer; |
| 875 | Py_INCREF(self); |
| 876 | parg->obj = (PyObject *)self; |
| 877 | parg->value.p = *(void **)self->b_ptr; |
| 878 | return parg; |
| 879 | } |
| 880 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 881 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 882 | PyCPointerType_new(PyTypeObject *type, PyObject *args, PyObject *kwds) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 883 | { |
| 884 | PyTypeObject *result; |
| 885 | StgDictObject *stgdict; |
| 886 | PyObject *proto; |
| 887 | PyObject *typedict; |
| 888 | |
| 889 | typedict = PyTuple_GetItem(args, 2); |
| 890 | if (!typedict) |
| 891 | return NULL; |
| 892 | /* |
| 893 | stgdict items size, align, length contain info about pointers itself, |
| 894 | stgdict->proto has info about the pointed to type! |
| 895 | */ |
| 896 | stgdict = (StgDictObject *)PyObject_CallObject( |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 897 | (PyObject *)&PyCStgDict_Type, NULL); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 898 | if (!stgdict) |
| 899 | return NULL; |
| 900 | stgdict->size = sizeof(void *); |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 901 | stgdict->align = _ctypes_get_fielddesc("P")->pffi_type->alignment; |
Thomas Heller | 55d031e | 2006-04-12 19:07:36 +0000 | [diff] [blame] | 902 | stgdict->length = 1; |
Skip Montanaro | 058be9a | 2006-04-18 19:45:17 +0000 | [diff] [blame] | 903 | stgdict->ffi_type_pointer = ffi_type_pointer; |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 904 | stgdict->paramfunc = PyCPointerType_paramfunc; |
Thomas Heller | a06a1a8 | 2008-02-13 20:21:53 +0000 | [diff] [blame] | 905 | stgdict->flags |= TYPEFLAG_ISPOINTER; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 906 | |
| 907 | proto = PyDict_GetItemString(typedict, "_type_"); /* Borrowed ref */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 908 | if (proto && -1 == PyCPointerType_SetProto(stgdict, proto)) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 909 | Py_DECREF((PyObject *)stgdict); |
| 910 | return NULL; |
| 911 | } |
| 912 | |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 913 | if (proto) { |
| 914 | StgDictObject *itemdict = PyType_stgdict(proto); |
| 915 | assert(itemdict); |
Thomas Heller | c0b2a80 | 2008-07-15 17:03:08 +0000 | [diff] [blame] | 916 | /* If itemdict->format is NULL, then this is a pointer to an |
| 917 | incomplete type. We create a generic format string |
| 918 | 'pointer to bytes' in this case. XXX Better would be to |
| 919 | fix the format string later... |
| 920 | */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 921 | stgdict->format = _ctypes_alloc_format_string("&", |
Thomas Heller | c0b2a80 | 2008-07-15 17:03:08 +0000 | [diff] [blame] | 922 | itemdict->format ? itemdict->format : "B"); |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 923 | if (stgdict->format == NULL) { |
| 924 | Py_DECREF((PyObject *)stgdict); |
| 925 | return NULL; |
| 926 | } |
| 927 | } |
| 928 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 929 | /* create the new instance (which is a class, |
| 930 | since we are a metatype!) */ |
| 931 | result = (PyTypeObject *)PyType_Type.tp_new(type, args, kwds); |
| 932 | if (result == NULL) { |
| 933 | Py_DECREF((PyObject *)stgdict); |
| 934 | return NULL; |
| 935 | } |
| 936 | |
| 937 | /* replace the class dict by our updated spam dict */ |
| 938 | if (-1 == PyDict_Update((PyObject *)stgdict, result->tp_dict)) { |
| 939 | Py_DECREF(result); |
| 940 | Py_DECREF((PyObject *)stgdict); |
| 941 | return NULL; |
| 942 | } |
| 943 | Py_DECREF(result->tp_dict); |
| 944 | result->tp_dict = (PyObject *)stgdict; |
| 945 | |
| 946 | return (PyObject *)result; |
| 947 | } |
| 948 | |
| 949 | |
| 950 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 951 | PyCPointerType_set_type(PyTypeObject *self, PyObject *type) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 952 | { |
| 953 | StgDictObject *dict; |
| 954 | |
| 955 | dict = PyType_stgdict((PyObject *)self); |
| 956 | assert(dict); |
| 957 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 958 | if (-1 == PyCPointerType_SetProto(dict, type)) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 959 | return NULL; |
| 960 | |
| 961 | if (-1 == PyDict_SetItemString((PyObject *)dict, "_type_", type)) |
| 962 | return NULL; |
| 963 | |
| 964 | Py_INCREF(Py_None); |
| 965 | return Py_None; |
| 966 | } |
| 967 | |
| 968 | staticforward PyObject *_byref(PyObject *); |
| 969 | |
| 970 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 971 | PyCPointerType_from_param(PyObject *type, PyObject *value) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 972 | { |
| 973 | StgDictObject *typedict; |
| 974 | |
Thomas Heller | 6be522b | 2009-09-18 20:05:44 +0000 | [diff] [blame] | 975 | if (value == Py_None) { |
| 976 | /* ConvParam will convert to a NULL pointer later */ |
| 977 | Py_INCREF(value); |
| 978 | return value; |
| 979 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 980 | |
| 981 | typedict = PyType_stgdict(type); |
Thomas Heller | 0b21b43 | 2006-08-18 14:38:46 +0000 | [diff] [blame] | 982 | assert(typedict); /* Cannot be NULL for pointer types */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 983 | |
| 984 | /* If we expect POINTER(<type>), but receive a <type> instance, accept |
| 985 | it by calling byref(<type>). |
| 986 | */ |
| 987 | switch (PyObject_IsInstance(value, typedict->proto)) { |
| 988 | case 1: |
| 989 | Py_INCREF(value); /* _byref steals a refcount */ |
| 990 | return _byref(value); |
| 991 | case -1: |
| 992 | PyErr_Clear(); |
| 993 | break; |
| 994 | default: |
| 995 | break; |
| 996 | } |
| 997 | |
| 998 | if (PointerObject_Check(value) || ArrayObject_Check(value)) { |
| 999 | /* Array instances are also pointers when |
| 1000 | the item types are the same. |
| 1001 | */ |
| 1002 | StgDictObject *v = PyObject_stgdict(value); |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 1003 | assert(v); /* Cannot be NULL for pointer or array objects */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1004 | if (PyObject_IsSubclass(v->proto, typedict->proto)) { |
| 1005 | Py_INCREF(value); |
| 1006 | return value; |
| 1007 | } |
| 1008 | } |
| 1009 | return CDataType_from_param(type, value); |
| 1010 | } |
| 1011 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1012 | static PyMethodDef PyCPointerType_methods[] = { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1013 | { "from_address", CDataType_from_address, METH_O, from_address_doc }, |
Thomas Heller | 6ad5fbb | 2008-04-25 15:44:16 +0000 | [diff] [blame] | 1014 | { "from_buffer", CDataType_from_buffer, METH_VARARGS, from_buffer_doc, }, |
| 1015 | { "from_buffer_copy", CDataType_from_buffer_copy, METH_VARARGS, from_buffer_copy_doc, }, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1016 | { "in_dll", CDataType_in_dll, METH_VARARGS, in_dll_doc}, |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1017 | { "from_param", (PyCFunction)PyCPointerType_from_param, METH_O, from_param_doc}, |
| 1018 | { "set_type", (PyCFunction)PyCPointerType_set_type, METH_O }, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1019 | { NULL, NULL }, |
| 1020 | }; |
| 1021 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1022 | PyTypeObject PyCPointerType_Type = { |
Martin v. Löwis | 6819210 | 2007-07-21 06:55:02 +0000 | [diff] [blame] | 1023 | PyVarObject_HEAD_INIT(NULL, 0) |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1024 | "_ctypes.PyCPointerType", /* tp_name */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1025 | 0, /* tp_basicsize */ |
| 1026 | 0, /* tp_itemsize */ |
| 1027 | 0, /* tp_dealloc */ |
| 1028 | 0, /* tp_print */ |
| 1029 | 0, /* tp_getattr */ |
| 1030 | 0, /* tp_setattr */ |
| 1031 | 0, /* tp_compare */ |
| 1032 | 0, /* tp_repr */ |
| 1033 | 0, /* tp_as_number */ |
| 1034 | &CDataType_as_sequence, /* tp_as_sequence */ |
| 1035 | 0, /* tp_as_mapping */ |
| 1036 | 0, /* tp_hash */ |
| 1037 | 0, /* tp_call */ |
| 1038 | 0, /* tp_str */ |
| 1039 | 0, /* tp_getattro */ |
| 1040 | 0, /* tp_setattro */ |
| 1041 | 0, /* tp_as_buffer */ |
| 1042 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC, /* tp_flags */ |
| 1043 | "metatype for the Pointer Objects", /* tp_doc */ |
| 1044 | (traverseproc)CDataType_traverse, /* tp_traverse */ |
| 1045 | (inquiry)CDataType_clear, /* tp_clear */ |
| 1046 | 0, /* tp_richcompare */ |
| 1047 | 0, /* tp_weaklistoffset */ |
| 1048 | 0, /* tp_iter */ |
| 1049 | 0, /* tp_iternext */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1050 | PyCPointerType_methods, /* tp_methods */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1051 | 0, /* tp_members */ |
| 1052 | 0, /* tp_getset */ |
| 1053 | 0, /* tp_base */ |
| 1054 | 0, /* tp_dict */ |
| 1055 | 0, /* tp_descr_get */ |
| 1056 | 0, /* tp_descr_set */ |
| 1057 | 0, /* tp_dictoffset */ |
| 1058 | 0, /* tp_init */ |
| 1059 | 0, /* tp_alloc */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1060 | PyCPointerType_new, /* tp_new */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1061 | 0, /* tp_free */ |
| 1062 | }; |
| 1063 | |
| 1064 | |
| 1065 | /******************************************************************/ |
| 1066 | /* |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1067 | PyCArrayType_Type |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1068 | */ |
| 1069 | /* |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1070 | PyCArrayType_new ensures that the new Array subclass created has a _length_ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1071 | attribute, and a _type_ attribute. |
| 1072 | */ |
| 1073 | |
| 1074 | static int |
| 1075 | CharArray_set_raw(CDataObject *self, PyObject *value) |
| 1076 | { |
| 1077 | char *ptr; |
Thomas Heller | fe8f862 | 2006-03-14 19:53:09 +0000 | [diff] [blame] | 1078 | Py_ssize_t size; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1079 | if (PyBuffer_Check(value)) { |
Christian Heimes | e93237d | 2007-12-19 02:37:44 +0000 | [diff] [blame] | 1080 | size = Py_TYPE(value)->tp_as_buffer->bf_getreadbuffer(value, 0, (void *)&ptr); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1081 | if (size < 0) |
| 1082 | return -1; |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1083 | } else if (-1 == PyString_AsStringAndSize(value, &ptr, &size)) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1084 | return -1; |
| 1085 | } |
| 1086 | if (size > self->b_size) { |
| 1087 | PyErr_SetString(PyExc_ValueError, |
| 1088 | "string too long"); |
| 1089 | return -1; |
| 1090 | } |
| 1091 | |
| 1092 | memcpy(self->b_ptr, ptr, size); |
| 1093 | |
| 1094 | return 0; |
| 1095 | } |
| 1096 | |
| 1097 | static PyObject * |
| 1098 | CharArray_get_raw(CDataObject *self) |
| 1099 | { |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1100 | return PyString_FromStringAndSize(self->b_ptr, self->b_size); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1101 | } |
| 1102 | |
| 1103 | static PyObject * |
| 1104 | CharArray_get_value(CDataObject *self) |
| 1105 | { |
| 1106 | int i; |
| 1107 | char *ptr = self->b_ptr; |
| 1108 | for (i = 0; i < self->b_size; ++i) |
| 1109 | if (*ptr++ == '\0') |
| 1110 | break; |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1111 | return PyString_FromStringAndSize(self->b_ptr, i); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1112 | } |
| 1113 | |
| 1114 | static int |
| 1115 | CharArray_set_value(CDataObject *self, PyObject *value) |
| 1116 | { |
| 1117 | char *ptr; |
Thomas Heller | e81c9f6 | 2007-06-08 18:20:09 +0000 | [diff] [blame] | 1118 | Py_ssize_t size; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1119 | |
Thomas Heller | 153038e | 2007-12-18 19:00:34 +0000 | [diff] [blame] | 1120 | if (value == NULL) { |
| 1121 | PyErr_SetString(PyExc_TypeError, |
| 1122 | "can't delete attribute"); |
| 1123 | return -1; |
| 1124 | } |
| 1125 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1126 | if (PyUnicode_Check(value)) { |
| 1127 | value = PyUnicode_AsEncodedString(value, |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1128 | _ctypes_conversion_encoding, |
| 1129 | _ctypes_conversion_errors); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1130 | if (!value) |
| 1131 | return -1; |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1132 | } else if (!PyString_Check(value)) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1133 | PyErr_Format(PyExc_TypeError, |
| 1134 | "string expected instead of %s instance", |
Christian Heimes | e93237d | 2007-12-19 02:37:44 +0000 | [diff] [blame] | 1135 | Py_TYPE(value)->tp_name); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1136 | return -1; |
| 1137 | } else |
| 1138 | Py_INCREF(value); |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1139 | size = PyString_GET_SIZE(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1140 | if (size > self->b_size) { |
| 1141 | PyErr_SetString(PyExc_ValueError, |
| 1142 | "string too long"); |
| 1143 | Py_DECREF(value); |
| 1144 | return -1; |
| 1145 | } |
| 1146 | |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1147 | ptr = PyString_AS_STRING(value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1148 | memcpy(self->b_ptr, ptr, size); |
| 1149 | if (size < self->b_size) |
| 1150 | self->b_ptr[size] = '\0'; |
| 1151 | Py_DECREF(value); |
| 1152 | |
| 1153 | return 0; |
| 1154 | } |
| 1155 | |
| 1156 | static PyGetSetDef CharArray_getsets[] = { |
| 1157 | { "raw", (getter)CharArray_get_raw, (setter)CharArray_set_raw, |
| 1158 | "value", NULL }, |
| 1159 | { "value", (getter)CharArray_get_value, (setter)CharArray_set_value, |
| 1160 | "string value"}, |
| 1161 | { NULL, NULL } |
| 1162 | }; |
| 1163 | |
| 1164 | #ifdef CTYPES_UNICODE |
| 1165 | static PyObject * |
| 1166 | WCharArray_get_value(CDataObject *self) |
| 1167 | { |
| 1168 | unsigned int i; |
| 1169 | wchar_t *ptr = (wchar_t *)self->b_ptr; |
| 1170 | for (i = 0; i < self->b_size/sizeof(wchar_t); ++i) |
| 1171 | if (*ptr++ == (wchar_t)0) |
| 1172 | break; |
| 1173 | return PyUnicode_FromWideChar((wchar_t *)self->b_ptr, i); |
| 1174 | } |
| 1175 | |
| 1176 | static int |
| 1177 | WCharArray_set_value(CDataObject *self, PyObject *value) |
| 1178 | { |
Thomas Heller | e81c9f6 | 2007-06-08 18:20:09 +0000 | [diff] [blame] | 1179 | Py_ssize_t result = 0; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1180 | |
Thomas Heller | 153038e | 2007-12-18 19:00:34 +0000 | [diff] [blame] | 1181 | if (value == NULL) { |
| 1182 | PyErr_SetString(PyExc_TypeError, |
| 1183 | "can't delete attribute"); |
| 1184 | return -1; |
| 1185 | } |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1186 | if (PyString_Check(value)) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1187 | value = PyUnicode_FromEncodedObject(value, |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1188 | _ctypes_conversion_encoding, |
| 1189 | _ctypes_conversion_errors); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1190 | if (!value) |
| 1191 | return -1; |
| 1192 | } else if (!PyUnicode_Check(value)) { |
| 1193 | PyErr_Format(PyExc_TypeError, |
| 1194 | "unicode string expected instead of %s instance", |
Christian Heimes | e93237d | 2007-12-19 02:37:44 +0000 | [diff] [blame] | 1195 | Py_TYPE(value)->tp_name); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1196 | return -1; |
| 1197 | } else |
| 1198 | Py_INCREF(value); |
| 1199 | if ((unsigned)PyUnicode_GET_SIZE(value) > self->b_size/sizeof(wchar_t)) { |
| 1200 | PyErr_SetString(PyExc_ValueError, |
| 1201 | "string too long"); |
| 1202 | result = -1; |
| 1203 | goto done; |
| 1204 | } |
| 1205 | result = PyUnicode_AsWideChar((PyUnicodeObject *)value, |
| 1206 | (wchar_t *)self->b_ptr, |
| 1207 | self->b_size/sizeof(wchar_t)); |
Thomas Heller | e81c9f6 | 2007-06-08 18:20:09 +0000 | [diff] [blame] | 1208 | if (result >= 0 && (size_t)result < self->b_size/sizeof(wchar_t)) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1209 | ((wchar_t *)self->b_ptr)[result] = (wchar_t)0; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1210 | done: |
| 1211 | Py_DECREF(value); |
| 1212 | |
Thomas Heller | e81c9f6 | 2007-06-08 18:20:09 +0000 | [diff] [blame] | 1213 | return result >= 0 ? 0 : -1; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1214 | } |
| 1215 | |
| 1216 | static PyGetSetDef WCharArray_getsets[] = { |
| 1217 | { "value", (getter)WCharArray_get_value, (setter)WCharArray_set_value, |
| 1218 | "string value"}, |
| 1219 | { NULL, NULL } |
| 1220 | }; |
| 1221 | #endif |
| 1222 | |
| 1223 | /* |
| 1224 | The next three functions copied from Python's typeobject.c. |
| 1225 | |
| 1226 | They are used to attach methods, members, or getsets to a type *after* it |
| 1227 | has been created: Arrays of characters have additional getsets to treat them |
| 1228 | as strings. |
| 1229 | */ |
| 1230 | /* |
| 1231 | static int |
| 1232 | add_methods(PyTypeObject *type, PyMethodDef *meth) |
| 1233 | { |
| 1234 | PyObject *dict = type->tp_dict; |
| 1235 | for (; meth->ml_name != NULL; meth++) { |
| 1236 | PyObject *descr; |
| 1237 | descr = PyDescr_NewMethod(type, meth); |
| 1238 | if (descr == NULL) |
| 1239 | return -1; |
| 1240 | if (PyDict_SetItemString(dict,meth->ml_name, descr) < 0) |
| 1241 | return -1; |
| 1242 | Py_DECREF(descr); |
| 1243 | } |
| 1244 | return 0; |
| 1245 | } |
| 1246 | |
| 1247 | static int |
| 1248 | add_members(PyTypeObject *type, PyMemberDef *memb) |
| 1249 | { |
| 1250 | PyObject *dict = type->tp_dict; |
| 1251 | for (; memb->name != NULL; memb++) { |
| 1252 | PyObject *descr; |
| 1253 | descr = PyDescr_NewMember(type, memb); |
| 1254 | if (descr == NULL) |
| 1255 | return -1; |
| 1256 | if (PyDict_SetItemString(dict, memb->name, descr) < 0) |
| 1257 | return -1; |
| 1258 | Py_DECREF(descr); |
| 1259 | } |
| 1260 | return 0; |
| 1261 | } |
| 1262 | */ |
| 1263 | |
| 1264 | static int |
| 1265 | add_getset(PyTypeObject *type, PyGetSetDef *gsp) |
| 1266 | { |
| 1267 | PyObject *dict = type->tp_dict; |
| 1268 | for (; gsp->name != NULL; gsp++) { |
| 1269 | PyObject *descr; |
| 1270 | descr = PyDescr_NewGetSet(type, gsp); |
| 1271 | if (descr == NULL) |
| 1272 | return -1; |
| 1273 | if (PyDict_SetItemString(dict, gsp->name, descr) < 0) |
| 1274 | return -1; |
| 1275 | Py_DECREF(descr); |
| 1276 | } |
| 1277 | return 0; |
| 1278 | } |
| 1279 | |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 1280 | static PyCArgObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1281 | PyCArrayType_paramfunc(CDataObject *self) |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 1282 | { |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1283 | PyCArgObject *p = PyCArgObject_new(); |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 1284 | if (p == NULL) |
| 1285 | return NULL; |
| 1286 | p->tag = 'P'; |
| 1287 | p->pffi_type = &ffi_type_pointer; |
| 1288 | p->value.p = (char *)self->b_ptr; |
| 1289 | Py_INCREF(self); |
| 1290 | p->obj = (PyObject *)self; |
| 1291 | return p; |
| 1292 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1293 | |
| 1294 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1295 | PyCArrayType_new(PyTypeObject *type, PyObject *args, PyObject *kwds) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1296 | { |
| 1297 | PyTypeObject *result; |
| 1298 | StgDictObject *stgdict; |
| 1299 | StgDictObject *itemdict; |
| 1300 | PyObject *proto; |
| 1301 | PyObject *typedict; |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 1302 | long length; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1303 | |
Thomas Heller | e81c9f6 | 2007-06-08 18:20:09 +0000 | [diff] [blame] | 1304 | Py_ssize_t itemsize, itemalign; |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 1305 | char buf[32]; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1306 | |
| 1307 | typedict = PyTuple_GetItem(args, 2); |
| 1308 | if (!typedict) |
| 1309 | return NULL; |
| 1310 | |
| 1311 | proto = PyDict_GetItemString(typedict, "_length_"); /* Borrowed ref */ |
| 1312 | if (!proto || !PyInt_Check(proto)) { |
| 1313 | PyErr_SetString(PyExc_AttributeError, |
| 1314 | "class must define a '_length_' attribute, " |
| 1315 | "which must be a positive integer"); |
| 1316 | return NULL; |
| 1317 | } |
| 1318 | length = PyInt_AS_LONG(proto); |
| 1319 | |
| 1320 | proto = PyDict_GetItemString(typedict, "_type_"); /* Borrowed ref */ |
| 1321 | if (!proto) { |
| 1322 | PyErr_SetString(PyExc_AttributeError, |
| 1323 | "class must define a '_type_' attribute"); |
| 1324 | return NULL; |
| 1325 | } |
| 1326 | |
| 1327 | stgdict = (StgDictObject *)PyObject_CallObject( |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1328 | (PyObject *)&PyCStgDict_Type, NULL); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1329 | if (!stgdict) |
| 1330 | return NULL; |
| 1331 | |
| 1332 | itemdict = PyType_stgdict(proto); |
| 1333 | if (!itemdict) { |
| 1334 | PyErr_SetString(PyExc_TypeError, |
| 1335 | "_type_ must have storage info"); |
| 1336 | Py_DECREF((PyObject *)stgdict); |
| 1337 | return NULL; |
| 1338 | } |
| 1339 | |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 1340 | assert(itemdict->format); |
| 1341 | if (itemdict->format[0] == '(') { |
| 1342 | sprintf(buf, "(%ld,", length); |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1343 | stgdict->format = _ctypes_alloc_format_string(buf, itemdict->format+1); |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 1344 | } else { |
| 1345 | sprintf(buf, "(%ld)", length); |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1346 | stgdict->format = _ctypes_alloc_format_string(buf, itemdict->format); |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 1347 | } |
| 1348 | if (stgdict->format == NULL) { |
| 1349 | Py_DECREF((PyObject *)stgdict); |
| 1350 | return NULL; |
| 1351 | } |
| 1352 | stgdict->ndim = itemdict->ndim + 1; |
| 1353 | stgdict->shape = PyMem_Malloc(sizeof(Py_ssize_t *) * stgdict->ndim); |
| 1354 | if (stgdict->shape == NULL) { |
| 1355 | Py_DECREF((PyObject *)stgdict); |
| 1356 | return NULL; |
| 1357 | } |
| 1358 | stgdict->shape[0] = length; |
| 1359 | memmove(&stgdict->shape[1], itemdict->shape, |
| 1360 | sizeof(Py_ssize_t) * (stgdict->ndim - 1)); |
| 1361 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1362 | itemsize = itemdict->size; |
Thomas Heller | e6a7039 | 2007-03-23 19:55:27 +0000 | [diff] [blame] | 1363 | if (length * itemsize < 0) { |
| 1364 | PyErr_SetString(PyExc_OverflowError, |
| 1365 | "array too large"); |
| 1366 | return NULL; |
| 1367 | } |
| 1368 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1369 | itemalign = itemdict->align; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1370 | |
Thomas Heller | a06a1a8 | 2008-02-13 20:21:53 +0000 | [diff] [blame] | 1371 | if (itemdict->flags & (TYPEFLAG_ISPOINTER | TYPEFLAG_HASPOINTER)) |
| 1372 | stgdict->flags |= TYPEFLAG_HASPOINTER; |
| 1373 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1374 | stgdict->size = itemsize * length; |
| 1375 | stgdict->align = itemalign; |
| 1376 | stgdict->length = length; |
| 1377 | Py_INCREF(proto); |
| 1378 | stgdict->proto = proto; |
| 1379 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1380 | stgdict->paramfunc = &PyCArrayType_paramfunc; |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 1381 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1382 | /* Arrays are passed as pointers to function calls. */ |
Skip Montanaro | 058be9a | 2006-04-18 19:45:17 +0000 | [diff] [blame] | 1383 | stgdict->ffi_type_pointer = ffi_type_pointer; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1384 | |
| 1385 | /* create the new instance (which is a class, |
| 1386 | since we are a metatype!) */ |
| 1387 | result = (PyTypeObject *)PyType_Type.tp_new(type, args, kwds); |
| 1388 | if (result == NULL) |
| 1389 | return NULL; |
| 1390 | |
| 1391 | /* replace the class dict by our updated spam dict */ |
| 1392 | if (-1 == PyDict_Update((PyObject *)stgdict, result->tp_dict)) { |
| 1393 | Py_DECREF(result); |
| 1394 | Py_DECREF((PyObject *)stgdict); |
| 1395 | return NULL; |
| 1396 | } |
| 1397 | Py_DECREF(result->tp_dict); |
| 1398 | result->tp_dict = (PyObject *)stgdict; |
| 1399 | |
| 1400 | /* Special case for character arrays. |
| 1401 | A permanent annoyance: char arrays are also strings! |
| 1402 | */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1403 | if (itemdict->getfunc == _ctypes_get_fielddesc("c")->getfunc) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1404 | if (-1 == add_getset(result, CharArray_getsets)) |
| 1405 | return NULL; |
| 1406 | #ifdef CTYPES_UNICODE |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1407 | } else if (itemdict->getfunc == _ctypes_get_fielddesc("u")->getfunc) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1408 | if (-1 == add_getset(result, WCharArray_getsets)) |
| 1409 | return NULL; |
| 1410 | #endif |
| 1411 | } |
| 1412 | |
| 1413 | return (PyObject *)result; |
| 1414 | } |
| 1415 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1416 | PyTypeObject PyCArrayType_Type = { |
Martin v. Löwis | 6819210 | 2007-07-21 06:55:02 +0000 | [diff] [blame] | 1417 | PyVarObject_HEAD_INIT(NULL, 0) |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1418 | "_ctypes.PyCArrayType", /* tp_name */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1419 | 0, /* tp_basicsize */ |
| 1420 | 0, /* tp_itemsize */ |
| 1421 | 0, /* tp_dealloc */ |
| 1422 | 0, /* tp_print */ |
| 1423 | 0, /* tp_getattr */ |
| 1424 | 0, /* tp_setattr */ |
| 1425 | 0, /* tp_compare */ |
| 1426 | 0, /* tp_repr */ |
| 1427 | 0, /* tp_as_number */ |
| 1428 | &CDataType_as_sequence, /* tp_as_sequence */ |
| 1429 | 0, /* tp_as_mapping */ |
| 1430 | 0, /* tp_hash */ |
| 1431 | 0, /* tp_call */ |
| 1432 | 0, /* tp_str */ |
| 1433 | 0, /* tp_getattro */ |
| 1434 | 0, /* tp_setattro */ |
| 1435 | 0, /* tp_as_buffer */ |
| 1436 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */ |
| 1437 | "metatype for the Array Objects", /* tp_doc */ |
| 1438 | 0, /* tp_traverse */ |
| 1439 | 0, /* tp_clear */ |
| 1440 | 0, /* tp_richcompare */ |
| 1441 | 0, /* tp_weaklistoffset */ |
| 1442 | 0, /* tp_iter */ |
| 1443 | 0, /* tp_iternext */ |
| 1444 | CDataType_methods, /* tp_methods */ |
| 1445 | 0, /* tp_members */ |
| 1446 | 0, /* tp_getset */ |
| 1447 | 0, /* tp_base */ |
| 1448 | 0, /* tp_dict */ |
| 1449 | 0, /* tp_descr_get */ |
| 1450 | 0, /* tp_descr_set */ |
| 1451 | 0, /* tp_dictoffset */ |
| 1452 | 0, /* tp_init */ |
| 1453 | 0, /* tp_alloc */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1454 | PyCArrayType_new, /* tp_new */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1455 | 0, /* tp_free */ |
| 1456 | }; |
| 1457 | |
| 1458 | |
| 1459 | /******************************************************************/ |
| 1460 | /* |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1461 | PyCSimpleType_Type |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1462 | */ |
| 1463 | /* |
| 1464 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1465 | PyCSimpleType_new ensures that the new Simple_Type subclass created has a valid |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1466 | _type_ attribute. |
| 1467 | |
| 1468 | */ |
| 1469 | |
Thomas Heller | f3c0559 | 2008-03-05 15:34:29 +0000 | [diff] [blame] | 1470 | static char *SIMPLE_TYPE_CHARS = "cbBhHiIlLdfuzZqQPXOv?g"; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1471 | |
| 1472 | static PyObject * |
| 1473 | c_wchar_p_from_param(PyObject *type, PyObject *value) |
| 1474 | { |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 1475 | PyObject *as_parameter; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1476 | #if (PYTHON_API_VERSION < 1012) |
| 1477 | # error not supported |
| 1478 | #endif |
| 1479 | if (value == Py_None) { |
| 1480 | Py_INCREF(Py_None); |
| 1481 | return Py_None; |
| 1482 | } |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1483 | if (PyUnicode_Check(value) || PyString_Check(value)) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1484 | PyCArgObject *parg; |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1485 | struct fielddesc *fd = _ctypes_get_fielddesc("Z"); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1486 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1487 | parg = PyCArgObject_new(); |
Thomas Heller | efa2727 | 2006-08-14 07:14:09 +0000 | [diff] [blame] | 1488 | if (parg == NULL) |
| 1489 | return NULL; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1490 | parg->pffi_type = &ffi_type_pointer; |
| 1491 | parg->tag = 'Z'; |
| 1492 | parg->obj = fd->setfunc(&parg->value, value, 0); |
| 1493 | if (parg->obj == NULL) { |
| 1494 | Py_DECREF(parg); |
| 1495 | return NULL; |
| 1496 | } |
| 1497 | return (PyObject *)parg; |
| 1498 | } |
| 1499 | if (PyObject_IsInstance(value, type)) { |
| 1500 | Py_INCREF(value); |
| 1501 | return value; |
| 1502 | } |
| 1503 | if (ArrayObject_Check(value) || PointerObject_Check(value)) { |
| 1504 | /* c_wchar array instance or pointer(c_wchar(...)) */ |
| 1505 | StgDictObject *dt = PyObject_stgdict(value); |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 1506 | StgDictObject *dict; |
| 1507 | assert(dt); /* Cannot be NULL for pointer or array objects */ |
| 1508 | dict = dt && dt->proto ? PyType_stgdict(dt->proto) : NULL; |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1509 | if (dict && (dict->setfunc == _ctypes_get_fielddesc("u")->setfunc)) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1510 | Py_INCREF(value); |
| 1511 | return value; |
| 1512 | } |
| 1513 | } |
| 1514 | if (PyCArg_CheckExact(value)) { |
| 1515 | /* byref(c_char(...)) */ |
| 1516 | PyCArgObject *a = (PyCArgObject *)value; |
| 1517 | StgDictObject *dict = PyObject_stgdict(a->obj); |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1518 | if (dict && (dict->setfunc == _ctypes_get_fielddesc("u")->setfunc)) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1519 | Py_INCREF(value); |
| 1520 | return value; |
| 1521 | } |
| 1522 | } |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 1523 | |
| 1524 | as_parameter = PyObject_GetAttrString(value, "_as_parameter_"); |
| 1525 | if (as_parameter) { |
| 1526 | value = c_wchar_p_from_param(type, as_parameter); |
| 1527 | Py_DECREF(as_parameter); |
| 1528 | return value; |
| 1529 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1530 | /* XXX better message */ |
| 1531 | PyErr_SetString(PyExc_TypeError, |
| 1532 | "wrong type"); |
| 1533 | return NULL; |
| 1534 | } |
| 1535 | |
| 1536 | static PyObject * |
| 1537 | c_char_p_from_param(PyObject *type, PyObject *value) |
| 1538 | { |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 1539 | PyObject *as_parameter; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1540 | #if (PYTHON_API_VERSION < 1012) |
| 1541 | # error not supported |
| 1542 | #endif |
| 1543 | if (value == Py_None) { |
| 1544 | Py_INCREF(Py_None); |
| 1545 | return Py_None; |
| 1546 | } |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1547 | if (PyString_Check(value) || PyUnicode_Check(value)) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1548 | PyCArgObject *parg; |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1549 | struct fielddesc *fd = _ctypes_get_fielddesc("z"); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1550 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1551 | parg = PyCArgObject_new(); |
Thomas Heller | efa2727 | 2006-08-14 07:14:09 +0000 | [diff] [blame] | 1552 | if (parg == NULL) |
| 1553 | return NULL; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1554 | parg->pffi_type = &ffi_type_pointer; |
| 1555 | parg->tag = 'z'; |
| 1556 | parg->obj = fd->setfunc(&parg->value, value, 0); |
| 1557 | if (parg->obj == NULL) { |
| 1558 | Py_DECREF(parg); |
| 1559 | return NULL; |
| 1560 | } |
| 1561 | return (PyObject *)parg; |
| 1562 | } |
| 1563 | if (PyObject_IsInstance(value, type)) { |
| 1564 | Py_INCREF(value); |
| 1565 | return value; |
| 1566 | } |
| 1567 | if (ArrayObject_Check(value) || PointerObject_Check(value)) { |
| 1568 | /* c_char array instance or pointer(c_char(...)) */ |
| 1569 | StgDictObject *dt = PyObject_stgdict(value); |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 1570 | StgDictObject *dict; |
| 1571 | assert(dt); /* Cannot be NULL for pointer or array objects */ |
| 1572 | dict = dt && dt->proto ? PyType_stgdict(dt->proto) : NULL; |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1573 | if (dict && (dict->setfunc == _ctypes_get_fielddesc("c")->setfunc)) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1574 | Py_INCREF(value); |
| 1575 | return value; |
| 1576 | } |
| 1577 | } |
| 1578 | if (PyCArg_CheckExact(value)) { |
| 1579 | /* byref(c_char(...)) */ |
| 1580 | PyCArgObject *a = (PyCArgObject *)value; |
| 1581 | StgDictObject *dict = PyObject_stgdict(a->obj); |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1582 | if (dict && (dict->setfunc == _ctypes_get_fielddesc("c")->setfunc)) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1583 | Py_INCREF(value); |
| 1584 | return value; |
| 1585 | } |
| 1586 | } |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 1587 | |
| 1588 | as_parameter = PyObject_GetAttrString(value, "_as_parameter_"); |
| 1589 | if (as_parameter) { |
| 1590 | value = c_char_p_from_param(type, as_parameter); |
| 1591 | Py_DECREF(as_parameter); |
| 1592 | return value; |
| 1593 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1594 | /* XXX better message */ |
| 1595 | PyErr_SetString(PyExc_TypeError, |
| 1596 | "wrong type"); |
| 1597 | return NULL; |
| 1598 | } |
| 1599 | |
| 1600 | static PyObject * |
| 1601 | c_void_p_from_param(PyObject *type, PyObject *value) |
| 1602 | { |
| 1603 | StgDictObject *stgd; |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 1604 | PyObject *as_parameter; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1605 | #if (PYTHON_API_VERSION < 1012) |
| 1606 | # error not supported |
| 1607 | #endif |
| 1608 | |
| 1609 | /* None */ |
| 1610 | if (value == Py_None) { |
| 1611 | Py_INCREF(Py_None); |
| 1612 | return Py_None; |
| 1613 | } |
| 1614 | /* Should probably allow buffer interface as well */ |
| 1615 | /* int, long */ |
| 1616 | if (PyInt_Check(value) || PyLong_Check(value)) { |
| 1617 | PyCArgObject *parg; |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1618 | struct fielddesc *fd = _ctypes_get_fielddesc("P"); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1619 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1620 | parg = PyCArgObject_new(); |
Thomas Heller | efa2727 | 2006-08-14 07:14:09 +0000 | [diff] [blame] | 1621 | if (parg == NULL) |
| 1622 | return NULL; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1623 | parg->pffi_type = &ffi_type_pointer; |
| 1624 | parg->tag = 'P'; |
| 1625 | parg->obj = fd->setfunc(&parg->value, value, 0); |
| 1626 | if (parg->obj == NULL) { |
| 1627 | Py_DECREF(parg); |
| 1628 | return NULL; |
| 1629 | } |
| 1630 | return (PyObject *)parg; |
| 1631 | } |
| 1632 | /* string */ |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1633 | if (PyString_Check(value)) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1634 | PyCArgObject *parg; |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1635 | struct fielddesc *fd = _ctypes_get_fielddesc("z"); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1636 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1637 | parg = PyCArgObject_new(); |
Thomas Heller | 4dc5dd1 | 2006-08-15 13:07:21 +0000 | [diff] [blame] | 1638 | if (parg == NULL) |
| 1639 | return NULL; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1640 | parg->pffi_type = &ffi_type_pointer; |
| 1641 | parg->tag = 'z'; |
| 1642 | parg->obj = fd->setfunc(&parg->value, value, 0); |
| 1643 | if (parg->obj == NULL) { |
| 1644 | Py_DECREF(parg); |
| 1645 | return NULL; |
| 1646 | } |
| 1647 | return (PyObject *)parg; |
| 1648 | } |
| 1649 | /* unicode */ |
| 1650 | if (PyUnicode_Check(value)) { |
| 1651 | PyCArgObject *parg; |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1652 | struct fielddesc *fd = _ctypes_get_fielddesc("Z"); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1653 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1654 | parg = PyCArgObject_new(); |
Thomas Heller | 4dc5dd1 | 2006-08-15 13:07:21 +0000 | [diff] [blame] | 1655 | if (parg == NULL) |
| 1656 | return NULL; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1657 | parg->pffi_type = &ffi_type_pointer; |
| 1658 | parg->tag = 'Z'; |
| 1659 | parg->obj = fd->setfunc(&parg->value, value, 0); |
| 1660 | if (parg->obj == NULL) { |
| 1661 | Py_DECREF(parg); |
| 1662 | return NULL; |
| 1663 | } |
| 1664 | return (PyObject *)parg; |
| 1665 | } |
| 1666 | /* c_void_p instance (or subclass) */ |
| 1667 | if (PyObject_IsInstance(value, type)) { |
| 1668 | /* c_void_p instances */ |
| 1669 | Py_INCREF(value); |
| 1670 | return value; |
| 1671 | } |
| 1672 | /* ctypes array or pointer instance */ |
| 1673 | if (ArrayObject_Check(value) || PointerObject_Check(value)) { |
| 1674 | /* Any array or pointer is accepted */ |
| 1675 | Py_INCREF(value); |
| 1676 | return value; |
| 1677 | } |
| 1678 | /* byref(...) */ |
| 1679 | if (PyCArg_CheckExact(value)) { |
| 1680 | /* byref(c_xxx()) */ |
| 1681 | PyCArgObject *a = (PyCArgObject *)value; |
| 1682 | if (a->tag == 'P') { |
| 1683 | Py_INCREF(value); |
| 1684 | return value; |
| 1685 | } |
| 1686 | } |
Thomas Heller | 4b75a7c | 2006-04-21 16:48:56 +0000 | [diff] [blame] | 1687 | /* function pointer */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1688 | if (PyCFuncPtrObject_Check(value)) { |
Thomas Heller | 4b75a7c | 2006-04-21 16:48:56 +0000 | [diff] [blame] | 1689 | PyCArgObject *parg; |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1690 | PyCFuncPtrObject *func; |
| 1691 | func = (PyCFuncPtrObject *)value; |
| 1692 | parg = PyCArgObject_new(); |
Thomas Heller | 4dc5dd1 | 2006-08-15 13:07:21 +0000 | [diff] [blame] | 1693 | if (parg == NULL) |
| 1694 | return NULL; |
Thomas Heller | 4b75a7c | 2006-04-21 16:48:56 +0000 | [diff] [blame] | 1695 | parg->pffi_type = &ffi_type_pointer; |
| 1696 | parg->tag = 'P'; |
| 1697 | Py_INCREF(value); |
| 1698 | parg->value.p = *(void **)func->b_ptr; |
| 1699 | parg->obj = value; |
| 1700 | return (PyObject *)parg; |
| 1701 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1702 | /* c_char_p, c_wchar_p */ |
| 1703 | stgd = PyObject_stgdict(value); |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1704 | if (stgd && CDataObject_Check(value) && stgd->proto && PyString_Check(stgd->proto)) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1705 | PyCArgObject *parg; |
| 1706 | |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1707 | switch (PyString_AS_STRING(stgd->proto)[0]) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1708 | case 'z': /* c_char_p */ |
| 1709 | case 'Z': /* c_wchar_p */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1710 | parg = PyCArgObject_new(); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1711 | if (parg == NULL) |
| 1712 | return NULL; |
| 1713 | parg->pffi_type = &ffi_type_pointer; |
| 1714 | parg->tag = 'Z'; |
| 1715 | Py_INCREF(value); |
| 1716 | parg->obj = value; |
| 1717 | /* Remember: b_ptr points to where the pointer is stored! */ |
| 1718 | parg->value.p = *(void **)(((CDataObject *)value)->b_ptr); |
| 1719 | return (PyObject *)parg; |
| 1720 | } |
| 1721 | } |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 1722 | |
| 1723 | as_parameter = PyObject_GetAttrString(value, "_as_parameter_"); |
| 1724 | if (as_parameter) { |
| 1725 | value = c_void_p_from_param(type, as_parameter); |
| 1726 | Py_DECREF(as_parameter); |
| 1727 | return value; |
| 1728 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1729 | /* XXX better message */ |
| 1730 | PyErr_SetString(PyExc_TypeError, |
| 1731 | "wrong type"); |
| 1732 | return NULL; |
| 1733 | } |
| 1734 | #if (PYTHON_API_VERSION >= 1012) |
| 1735 | |
| 1736 | static PyMethodDef c_void_p_method = { "from_param", c_void_p_from_param, METH_O }; |
| 1737 | static PyMethodDef c_char_p_method = { "from_param", c_char_p_from_param, METH_O }; |
| 1738 | static PyMethodDef c_wchar_p_method = { "from_param", c_wchar_p_from_param, METH_O }; |
| 1739 | |
| 1740 | #else |
| 1741 | #error |
| 1742 | static PyMethodDef c_void_p_method = { "from_param", c_void_p_from_param, METH_VARARGS }; |
| 1743 | static PyMethodDef c_char_p_method = { "from_param", c_char_p_from_param, METH_VARARGS }; |
| 1744 | static PyMethodDef c_wchar_p_method = { "from_param", c_wchar_p_from_param, METH_VARARGS }; |
| 1745 | |
| 1746 | #endif |
| 1747 | |
| 1748 | static PyObject *CreateSwappedType(PyTypeObject *type, PyObject *args, PyObject *kwds, |
| 1749 | PyObject *proto, struct fielddesc *fmt) |
| 1750 | { |
| 1751 | PyTypeObject *result; |
| 1752 | StgDictObject *stgdict; |
| 1753 | PyObject *name = PyTuple_GET_ITEM(args, 0); |
Thomas Heller | 4c9dfc8 | 2006-03-16 19:26:21 +0000 | [diff] [blame] | 1754 | PyObject *swapped_args; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1755 | static PyObject *suffix; |
Neal Norwitz | b038333 | 2006-04-06 08:05:53 +0000 | [diff] [blame] | 1756 | Py_ssize_t i; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1757 | |
Thomas Heller | 4c9dfc8 | 2006-03-16 19:26:21 +0000 | [diff] [blame] | 1758 | swapped_args = PyTuple_New(PyTuple_GET_SIZE(args)); |
| 1759 | if (!swapped_args) |
| 1760 | return NULL; |
| 1761 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1762 | if (suffix == NULL) |
| 1763 | #ifdef WORDS_BIGENDIAN |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1764 | suffix = PyString_InternFromString("_le"); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1765 | #else |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1766 | suffix = PyString_InternFromString("_be"); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1767 | #endif |
| 1768 | |
Thomas Heller | 9d89299 | 2006-04-18 14:57:39 +0000 | [diff] [blame] | 1769 | Py_INCREF(name); |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1770 | PyString_Concat(&name, suffix); |
Neal Norwitz | b038333 | 2006-04-06 08:05:53 +0000 | [diff] [blame] | 1771 | if (name == NULL) |
| 1772 | return NULL; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1773 | |
| 1774 | PyTuple_SET_ITEM(swapped_args, 0, name); |
| 1775 | for (i=1; i<PyTuple_GET_SIZE(args); ++i) { |
| 1776 | PyObject *v = PyTuple_GET_ITEM(args, i); |
| 1777 | Py_INCREF(v); |
| 1778 | PyTuple_SET_ITEM(swapped_args, i, v); |
| 1779 | } |
| 1780 | |
| 1781 | /* create the new instance (which is a class, |
| 1782 | since we are a metatype!) */ |
| 1783 | result = (PyTypeObject *)PyType_Type.tp_new(type, swapped_args, kwds); |
| 1784 | Py_DECREF(swapped_args); |
| 1785 | if (result == NULL) |
| 1786 | return NULL; |
| 1787 | |
| 1788 | stgdict = (StgDictObject *)PyObject_CallObject( |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1789 | (PyObject *)&PyCStgDict_Type, NULL); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1790 | if (!stgdict) /* XXX leaks result! */ |
| 1791 | return NULL; |
| 1792 | |
Skip Montanaro | 058be9a | 2006-04-18 19:45:17 +0000 | [diff] [blame] | 1793 | stgdict->ffi_type_pointer = *fmt->pffi_type; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1794 | stgdict->align = fmt->pffi_type->alignment; |
| 1795 | stgdict->length = 0; |
| 1796 | stgdict->size = fmt->pffi_type->size; |
| 1797 | stgdict->setfunc = fmt->setfunc_swapped; |
| 1798 | stgdict->getfunc = fmt->getfunc_swapped; |
| 1799 | |
| 1800 | Py_INCREF(proto); |
| 1801 | stgdict->proto = proto; |
| 1802 | |
| 1803 | /* replace the class dict by our updated spam dict */ |
| 1804 | if (-1 == PyDict_Update((PyObject *)stgdict, result->tp_dict)) { |
| 1805 | Py_DECREF(result); |
| 1806 | Py_DECREF((PyObject *)stgdict); |
| 1807 | return NULL; |
| 1808 | } |
| 1809 | Py_DECREF(result->tp_dict); |
| 1810 | result->tp_dict = (PyObject *)stgdict; |
| 1811 | |
| 1812 | return (PyObject *)result; |
| 1813 | } |
| 1814 | |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 1815 | static PyCArgObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1816 | PyCSimpleType_paramfunc(CDataObject *self) |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 1817 | { |
| 1818 | StgDictObject *dict; |
| 1819 | char *fmt; |
| 1820 | PyCArgObject *parg; |
| 1821 | struct fielddesc *fd; |
| 1822 | |
| 1823 | dict = PyObject_stgdict((PyObject *)self); |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 1824 | assert(dict); /* Cannot be NULL for CDataObject instances */ |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1825 | fmt = PyString_AsString(dict->proto); |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 1826 | assert(fmt); |
| 1827 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1828 | fd = _ctypes_get_fielddesc(fmt); |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 1829 | assert(fd); |
| 1830 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1831 | parg = PyCArgObject_new(); |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 1832 | if (parg == NULL) |
| 1833 | return NULL; |
| 1834 | |
| 1835 | parg->tag = fmt[0]; |
| 1836 | parg->pffi_type = fd->pffi_type; |
| 1837 | Py_INCREF(self); |
| 1838 | parg->obj = (PyObject *)self; |
| 1839 | memcpy(&parg->value, self->b_ptr, self->b_size); |
| 1840 | return parg; |
| 1841 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1842 | |
| 1843 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1844 | PyCSimpleType_new(PyTypeObject *type, PyObject *args, PyObject *kwds) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1845 | { |
| 1846 | PyTypeObject *result; |
| 1847 | StgDictObject *stgdict; |
| 1848 | PyObject *proto; |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 1849 | const char *proto_str; |
| 1850 | Py_ssize_t proto_len; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1851 | PyMethodDef *ml; |
| 1852 | struct fielddesc *fmt; |
| 1853 | |
| 1854 | /* create the new instance (which is a class, |
| 1855 | since we are a metatype!) */ |
| 1856 | result = (PyTypeObject *)PyType_Type.tp_new(type, args, kwds); |
| 1857 | if (result == NULL) |
| 1858 | return NULL; |
| 1859 | |
| 1860 | proto = PyObject_GetAttrString((PyObject *)result, "_type_"); /* new ref */ |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 1861 | if (!proto) { |
| 1862 | PyErr_SetString(PyExc_AttributeError, |
| 1863 | "class must define a '_type_' attribute"); |
| 1864 | error: |
| 1865 | Py_XDECREF(proto); |
| 1866 | Py_XDECREF(result); |
| 1867 | return NULL; |
| 1868 | } |
| 1869 | if (PyString_Check(proto)) { |
Thomas Heller | ba55936 | 2008-07-24 11:16:45 +0000 | [diff] [blame] | 1870 | proto_str = PyString_AS_STRING(proto); |
| 1871 | proto_len = PyString_GET_SIZE(proto); |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 1872 | } else { |
| 1873 | PyErr_SetString(PyExc_TypeError, |
| 1874 | "class must define a '_type_' string attribute"); |
| 1875 | goto error; |
| 1876 | } |
| 1877 | if (proto_len != 1) { |
| 1878 | PyErr_SetString(PyExc_ValueError, |
| 1879 | "class must define a '_type_' attribute " |
| 1880 | "which must be a string of length 1"); |
| 1881 | goto error; |
| 1882 | } |
| 1883 | if (!strchr(SIMPLE_TYPE_CHARS, *proto_str)) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1884 | PyErr_Format(PyExc_AttributeError, |
| 1885 | "class must define a '_type_' attribute which must be\n" |
| 1886 | "a single character string containing one of '%s'.", |
| 1887 | SIMPLE_TYPE_CHARS); |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 1888 | goto error; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1889 | } |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1890 | fmt = _ctypes_get_fielddesc(PyString_AS_STRING(proto)); |
Thomas Heller | 7b1da51 | 2006-07-10 09:31:06 +0000 | [diff] [blame] | 1891 | if (fmt == NULL) { |
| 1892 | Py_DECREF(result); |
| 1893 | PyErr_Format(PyExc_ValueError, |
| 1894 | "_type_ '%s' not supported", |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1895 | PyString_AS_STRING(proto)); |
Thomas Heller | 7b1da51 | 2006-07-10 09:31:06 +0000 | [diff] [blame] | 1896 | return NULL; |
| 1897 | } |
| 1898 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1899 | stgdict = (StgDictObject *)PyObject_CallObject( |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1900 | (PyObject *)&PyCStgDict_Type, NULL); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1901 | if (!stgdict) |
| 1902 | return NULL; |
| 1903 | |
Skip Montanaro | 058be9a | 2006-04-18 19:45:17 +0000 | [diff] [blame] | 1904 | stgdict->ffi_type_pointer = *fmt->pffi_type; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1905 | stgdict->align = fmt->pffi_type->alignment; |
| 1906 | stgdict->length = 0; |
| 1907 | stgdict->size = fmt->pffi_type->size; |
| 1908 | stgdict->setfunc = fmt->setfunc; |
| 1909 | stgdict->getfunc = fmt->getfunc; |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 1910 | #ifdef WORDS_BIGENDIAN |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1911 | stgdict->format = _ctypes_alloc_format_string(">", proto_str); |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 1912 | #else |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1913 | stgdict->format = _ctypes_alloc_format_string("<", proto_str); |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 1914 | #endif |
| 1915 | if (stgdict->format == NULL) { |
| 1916 | Py_DECREF(result); |
| 1917 | Py_DECREF((PyObject *)stgdict); |
| 1918 | return NULL; |
| 1919 | } |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 1920 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1921 | stgdict->paramfunc = PyCSimpleType_paramfunc; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1922 | /* |
| 1923 | if (result->tp_base != &Simple_Type) { |
| 1924 | stgdict->setfunc = NULL; |
| 1925 | stgdict->getfunc = NULL; |
| 1926 | } |
| 1927 | */ |
| 1928 | |
| 1929 | /* This consumes the refcount on proto which we have */ |
| 1930 | stgdict->proto = proto; |
| 1931 | |
| 1932 | /* replace the class dict by our updated spam dict */ |
| 1933 | if (-1 == PyDict_Update((PyObject *)stgdict, result->tp_dict)) { |
| 1934 | Py_DECREF(result); |
| 1935 | Py_DECREF((PyObject *)stgdict); |
| 1936 | return NULL; |
| 1937 | } |
| 1938 | Py_DECREF(result->tp_dict); |
| 1939 | result->tp_dict = (PyObject *)stgdict; |
| 1940 | |
| 1941 | /* Install from_param class methods in ctypes base classes. |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 1942 | Overrides the PyCSimpleType_from_param generic method. |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1943 | */ |
| 1944 | if (result->tp_base == &Simple_Type) { |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 1945 | switch (PyString_AS_STRING(proto)[0]) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1946 | case 'z': /* c_char_p */ |
| 1947 | ml = &c_char_p_method; |
Thomas Heller | a06a1a8 | 2008-02-13 20:21:53 +0000 | [diff] [blame] | 1948 | stgdict->flags |= TYPEFLAG_ISPOINTER; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1949 | break; |
| 1950 | case 'Z': /* c_wchar_p */ |
| 1951 | ml = &c_wchar_p_method; |
Thomas Heller | a06a1a8 | 2008-02-13 20:21:53 +0000 | [diff] [blame] | 1952 | stgdict->flags |= TYPEFLAG_ISPOINTER; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1953 | break; |
| 1954 | case 'P': /* c_void_p */ |
| 1955 | ml = &c_void_p_method; |
Thomas Heller | a06a1a8 | 2008-02-13 20:21:53 +0000 | [diff] [blame] | 1956 | stgdict->flags |= TYPEFLAG_ISPOINTER; |
| 1957 | break; |
Thomas Heller | ec21ccd | 2009-04-24 20:00:41 +0000 | [diff] [blame] | 1958 | case 's': |
Thomas Heller | a06a1a8 | 2008-02-13 20:21:53 +0000 | [diff] [blame] | 1959 | case 'X': |
| 1960 | case 'O': |
| 1961 | ml = NULL; |
| 1962 | stgdict->flags |= TYPEFLAG_ISPOINTER; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 1963 | break; |
| 1964 | default: |
| 1965 | ml = NULL; |
| 1966 | break; |
| 1967 | } |
| 1968 | |
| 1969 | if (ml) { |
| 1970 | #if (PYTHON_API_VERSION >= 1012) |
| 1971 | PyObject *meth; |
| 1972 | int x; |
| 1973 | meth = PyDescr_NewClassMethod(result, ml); |
| 1974 | if (!meth) |
| 1975 | return NULL; |
| 1976 | #else |
| 1977 | #error |
| 1978 | PyObject *meth, *func; |
| 1979 | int x; |
| 1980 | func = PyCFunction_New(ml, NULL); |
| 1981 | if (!func) |
| 1982 | return NULL; |
| 1983 | meth = PyObject_CallFunctionObjArgs( |
| 1984 | (PyObject *)&PyClassMethod_Type, |
| 1985 | func, NULL); |
| 1986 | Py_DECREF(func); |
| 1987 | if (!meth) { |
| 1988 | return NULL; |
| 1989 | } |
| 1990 | #endif |
| 1991 | x = PyDict_SetItemString(result->tp_dict, |
| 1992 | ml->ml_name, |
| 1993 | meth); |
| 1994 | Py_DECREF(meth); |
| 1995 | if (x == -1) { |
| 1996 | Py_DECREF(result); |
| 1997 | return NULL; |
| 1998 | } |
| 1999 | } |
| 2000 | } |
| 2001 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2002 | if (type == &PyCSimpleType_Type && fmt->setfunc_swapped && fmt->getfunc_swapped) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2003 | PyObject *swapped = CreateSwappedType(type, args, kwds, |
| 2004 | proto, fmt); |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 2005 | StgDictObject *sw_dict; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2006 | if (swapped == NULL) { |
| 2007 | Py_DECREF(result); |
| 2008 | return NULL; |
| 2009 | } |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 2010 | sw_dict = PyType_stgdict(swapped); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2011 | #ifdef WORDS_BIGENDIAN |
| 2012 | PyObject_SetAttrString((PyObject *)result, "__ctype_le__", swapped); |
| 2013 | PyObject_SetAttrString((PyObject *)result, "__ctype_be__", (PyObject *)result); |
| 2014 | PyObject_SetAttrString(swapped, "__ctype_be__", (PyObject *)result); |
| 2015 | PyObject_SetAttrString(swapped, "__ctype_le__", swapped); |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 2016 | /* We are creating the type for the OTHER endian */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2017 | sw_dict->format = _ctypes_alloc_format_string("<", stgdict->format+1); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2018 | #else |
| 2019 | PyObject_SetAttrString((PyObject *)result, "__ctype_be__", swapped); |
| 2020 | PyObject_SetAttrString((PyObject *)result, "__ctype_le__", (PyObject *)result); |
| 2021 | PyObject_SetAttrString(swapped, "__ctype_le__", (PyObject *)result); |
| 2022 | PyObject_SetAttrString(swapped, "__ctype_be__", swapped); |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 2023 | /* We are creating the type for the OTHER endian */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2024 | sw_dict->format = _ctypes_alloc_format_string(">", stgdict->format+1); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2025 | #endif |
Thomas Heller | 9d89299 | 2006-04-18 14:57:39 +0000 | [diff] [blame] | 2026 | Py_DECREF(swapped); |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 2027 | if (PyErr_Occurred()) { |
| 2028 | Py_DECREF(result); |
| 2029 | return NULL; |
| 2030 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2031 | }; |
| 2032 | |
| 2033 | return (PyObject *)result; |
| 2034 | } |
| 2035 | |
| 2036 | /* |
| 2037 | * This is a *class method*. |
| 2038 | * Convert a parameter into something that ConvParam can handle. |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2039 | */ |
| 2040 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2041 | PyCSimpleType_from_param(PyObject *type, PyObject *value) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2042 | { |
| 2043 | StgDictObject *dict; |
| 2044 | char *fmt; |
| 2045 | PyCArgObject *parg; |
| 2046 | struct fielddesc *fd; |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 2047 | PyObject *as_parameter; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2048 | |
| 2049 | /* If the value is already an instance of the requested type, |
| 2050 | we can use it as is */ |
| 2051 | if (1 == PyObject_IsInstance(value, type)) { |
| 2052 | Py_INCREF(value); |
| 2053 | return value; |
| 2054 | } |
| 2055 | |
| 2056 | dict = PyType_stgdict(type); |
| 2057 | assert(dict); |
| 2058 | |
| 2059 | /* I think we can rely on this being a one-character string */ |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2060 | fmt = PyString_AsString(dict->proto); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2061 | assert(fmt); |
| 2062 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2063 | fd = _ctypes_get_fielddesc(fmt); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2064 | assert(fd); |
| 2065 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2066 | parg = PyCArgObject_new(); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2067 | if (parg == NULL) |
| 2068 | return NULL; |
| 2069 | |
| 2070 | parg->tag = fmt[0]; |
| 2071 | parg->pffi_type = fd->pffi_type; |
| 2072 | parg->obj = fd->setfunc(&parg->value, value, 0); |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 2073 | if (parg->obj) |
| 2074 | return (PyObject *)parg; |
| 2075 | PyErr_Clear(); |
| 2076 | Py_DECREF(parg); |
| 2077 | |
| 2078 | as_parameter = PyObject_GetAttrString(value, "_as_parameter_"); |
| 2079 | if (as_parameter) { |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2080 | value = PyCSimpleType_from_param(type, as_parameter); |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 2081 | Py_DECREF(as_parameter); |
| 2082 | return value; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2083 | } |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 2084 | PyErr_SetString(PyExc_TypeError, |
| 2085 | "wrong type"); |
| 2086 | return NULL; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2087 | } |
| 2088 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2089 | static PyMethodDef PyCSimpleType_methods[] = { |
| 2090 | { "from_param", PyCSimpleType_from_param, METH_O, from_param_doc }, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2091 | { "from_address", CDataType_from_address, METH_O, from_address_doc }, |
Thomas Heller | 6ad5fbb | 2008-04-25 15:44:16 +0000 | [diff] [blame] | 2092 | { "from_buffer", CDataType_from_buffer, METH_VARARGS, from_buffer_doc, }, |
| 2093 | { "from_buffer_copy", CDataType_from_buffer_copy, METH_VARARGS, from_buffer_copy_doc, }, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2094 | { "in_dll", CDataType_in_dll, METH_VARARGS, in_dll_doc}, |
| 2095 | { NULL, NULL }, |
| 2096 | }; |
| 2097 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2098 | PyTypeObject PyCSimpleType_Type = { |
Martin v. Löwis | 6819210 | 2007-07-21 06:55:02 +0000 | [diff] [blame] | 2099 | PyVarObject_HEAD_INIT(NULL, 0) |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2100 | "_ctypes.PyCSimpleType", /* tp_name */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2101 | 0, /* tp_basicsize */ |
| 2102 | 0, /* tp_itemsize */ |
| 2103 | 0, /* tp_dealloc */ |
| 2104 | 0, /* tp_print */ |
| 2105 | 0, /* tp_getattr */ |
| 2106 | 0, /* tp_setattr */ |
| 2107 | 0, /* tp_compare */ |
| 2108 | 0, /* tp_repr */ |
| 2109 | 0, /* tp_as_number */ |
| 2110 | &CDataType_as_sequence, /* tp_as_sequence */ |
| 2111 | 0, /* tp_as_mapping */ |
| 2112 | 0, /* tp_hash */ |
| 2113 | 0, /* tp_call */ |
| 2114 | 0, /* tp_str */ |
| 2115 | 0, /* tp_getattro */ |
| 2116 | 0, /* tp_setattro */ |
| 2117 | 0, /* tp_as_buffer */ |
| 2118 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2119 | "metatype for the PyCSimpleType Objects", /* tp_doc */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2120 | 0, /* tp_traverse */ |
| 2121 | 0, /* tp_clear */ |
| 2122 | 0, /* tp_richcompare */ |
| 2123 | 0, /* tp_weaklistoffset */ |
| 2124 | 0, /* tp_iter */ |
| 2125 | 0, /* tp_iternext */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2126 | PyCSimpleType_methods, /* tp_methods */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2127 | 0, /* tp_members */ |
| 2128 | 0, /* tp_getset */ |
| 2129 | 0, /* tp_base */ |
| 2130 | 0, /* tp_dict */ |
| 2131 | 0, /* tp_descr_get */ |
| 2132 | 0, /* tp_descr_set */ |
| 2133 | 0, /* tp_dictoffset */ |
| 2134 | 0, /* tp_init */ |
| 2135 | 0, /* tp_alloc */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2136 | PyCSimpleType_new, /* tp_new */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2137 | 0, /* tp_free */ |
| 2138 | }; |
| 2139 | |
| 2140 | /******************************************************************/ |
| 2141 | /* |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2142 | PyCFuncPtrType_Type |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2143 | */ |
| 2144 | |
| 2145 | static PyObject * |
| 2146 | converters_from_argtypes(PyObject *ob) |
| 2147 | { |
| 2148 | PyObject *converters; |
Thomas Heller | e81c9f6 | 2007-06-08 18:20:09 +0000 | [diff] [blame] | 2149 | Py_ssize_t i; |
| 2150 | Py_ssize_t nArgs; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2151 | |
| 2152 | ob = PySequence_Tuple(ob); /* new reference */ |
| 2153 | if (!ob) { |
| 2154 | PyErr_SetString(PyExc_TypeError, |
| 2155 | "_argtypes_ must be a sequence of types"); |
| 2156 | return NULL; |
| 2157 | } |
| 2158 | |
| 2159 | nArgs = PyTuple_GET_SIZE(ob); |
| 2160 | converters = PyTuple_New(nArgs); |
| 2161 | if (!converters) |
| 2162 | return NULL; |
| 2163 | |
| 2164 | /* I have to check if this is correct. Using c_char, which has a size |
| 2165 | of 1, will be assumed to be pushed as only one byte! |
| 2166 | Aren't these promoted to integers by the C compiler and pushed as 4 bytes? |
| 2167 | */ |
| 2168 | |
| 2169 | for (i = 0; i < nArgs; ++i) { |
| 2170 | PyObject *tp = PyTuple_GET_ITEM(ob, i); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2171 | PyObject *cnv = PyObject_GetAttrString(tp, "from_param"); |
Thomas Heller | 5becdbe | 2006-07-06 08:48:35 +0000 | [diff] [blame] | 2172 | if (!cnv) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2173 | goto argtypes_error_1; |
| 2174 | PyTuple_SET_ITEM(converters, i, cnv); |
| 2175 | } |
| 2176 | Py_DECREF(ob); |
| 2177 | return converters; |
| 2178 | |
| 2179 | argtypes_error_1: |
| 2180 | Py_XDECREF(converters); |
| 2181 | Py_DECREF(ob); |
| 2182 | PyErr_Format(PyExc_TypeError, |
Thomas Heller | 6088f24 | 2007-06-08 19:01:06 +0000 | [diff] [blame] | 2183 | #if (PY_VERSION_HEX < 0x02050000) |
| 2184 | "item %d in _argtypes_ has no from_param method", |
| 2185 | #else |
| 2186 | "item %zd in _argtypes_ has no from_param method", |
| 2187 | #endif |
| 2188 | i+1); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2189 | return NULL; |
| 2190 | } |
| 2191 | |
| 2192 | static int |
| 2193 | make_funcptrtype_dict(StgDictObject *stgdict) |
| 2194 | { |
| 2195 | PyObject *ob; |
| 2196 | PyObject *converters = NULL; |
| 2197 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2198 | stgdict->align = _ctypes_get_fielddesc("P")->pffi_type->alignment; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2199 | stgdict->length = 1; |
| 2200 | stgdict->size = sizeof(void *); |
| 2201 | stgdict->setfunc = NULL; |
| 2202 | stgdict->getfunc = NULL; |
Skip Montanaro | 058be9a | 2006-04-18 19:45:17 +0000 | [diff] [blame] | 2203 | stgdict->ffi_type_pointer = ffi_type_pointer; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2204 | |
| 2205 | ob = PyDict_GetItemString((PyObject *)stgdict, "_flags_"); |
| 2206 | if (!ob || !PyInt_Check(ob)) { |
| 2207 | PyErr_SetString(PyExc_TypeError, |
| 2208 | "class must define _flags_ which must be an integer"); |
| 2209 | return -1; |
| 2210 | } |
Thomas Heller | a06a1a8 | 2008-02-13 20:21:53 +0000 | [diff] [blame] | 2211 | stgdict->flags = PyInt_AS_LONG(ob) | TYPEFLAG_ISPOINTER; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2212 | |
| 2213 | /* _argtypes_ is optional... */ |
| 2214 | ob = PyDict_GetItemString((PyObject *)stgdict, "_argtypes_"); |
| 2215 | if (ob) { |
| 2216 | converters = converters_from_argtypes(ob); |
| 2217 | if (!converters) |
| 2218 | goto error; |
| 2219 | Py_INCREF(ob); |
| 2220 | stgdict->argtypes = ob; |
| 2221 | stgdict->converters = converters; |
| 2222 | } |
| 2223 | |
| 2224 | ob = PyDict_GetItemString((PyObject *)stgdict, "_restype_"); |
| 2225 | if (ob) { |
| 2226 | if (ob != Py_None && !PyType_stgdict(ob) && !PyCallable_Check(ob)) { |
| 2227 | PyErr_SetString(PyExc_TypeError, |
| 2228 | "_restype_ must be a type, a callable, or None"); |
| 2229 | return -1; |
| 2230 | } |
| 2231 | Py_INCREF(ob); |
| 2232 | stgdict->restype = ob; |
| 2233 | stgdict->checker = PyObject_GetAttrString(ob, "_check_retval_"); |
| 2234 | if (stgdict->checker == NULL) |
| 2235 | PyErr_Clear(); |
| 2236 | } |
| 2237 | /* XXX later, maybe. |
| 2238 | ob = PyDict_GetItemString((PyObject *)stgdict, "_errcheck_"); |
| 2239 | if (ob) { |
| 2240 | if (!PyCallable_Check(ob)) { |
| 2241 | PyErr_SetString(PyExc_TypeError, |
| 2242 | "_errcheck_ must be callable"); |
| 2243 | return -1; |
| 2244 | } |
| 2245 | Py_INCREF(ob); |
| 2246 | stgdict->errcheck = ob; |
| 2247 | } |
| 2248 | */ |
| 2249 | return 0; |
| 2250 | |
| 2251 | error: |
| 2252 | Py_XDECREF(converters); |
| 2253 | return -1; |
| 2254 | |
| 2255 | } |
| 2256 | |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 2257 | static PyCArgObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2258 | PyCFuncPtrType_paramfunc(CDataObject *self) |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 2259 | { |
| 2260 | PyCArgObject *parg; |
| 2261 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2262 | parg = PyCArgObject_new(); |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 2263 | if (parg == NULL) |
| 2264 | return NULL; |
| 2265 | |
| 2266 | parg->tag = 'P'; |
| 2267 | parg->pffi_type = &ffi_type_pointer; |
| 2268 | Py_INCREF(self); |
| 2269 | parg->obj = (PyObject *)self; |
| 2270 | parg->value.p = *(void **)self->b_ptr; |
| 2271 | return parg; |
| 2272 | } |
| 2273 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2274 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2275 | PyCFuncPtrType_new(PyTypeObject *type, PyObject *args, PyObject *kwds) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2276 | { |
| 2277 | PyTypeObject *result; |
| 2278 | StgDictObject *stgdict; |
| 2279 | |
| 2280 | stgdict = (StgDictObject *)PyObject_CallObject( |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2281 | (PyObject *)&PyCStgDict_Type, NULL); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2282 | if (!stgdict) |
| 2283 | return NULL; |
| 2284 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2285 | stgdict->paramfunc = PyCFuncPtrType_paramfunc; |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 2286 | /* We do NOT expose the function signature in the format string. It |
| 2287 | is impossible, generally, because the only requirement for the |
| 2288 | argtypes items is that they have a .from_param method - we do not |
| 2289 | know the types of the arguments (although, in practice, most |
| 2290 | argtypes would be a ctypes type). |
| 2291 | */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2292 | stgdict->format = _ctypes_alloc_format_string(NULL, "X{}"); |
Thomas Heller | a06a1a8 | 2008-02-13 20:21:53 +0000 | [diff] [blame] | 2293 | stgdict->flags |= TYPEFLAG_ISPOINTER; |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 2294 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2295 | /* create the new instance (which is a class, |
| 2296 | since we are a metatype!) */ |
| 2297 | result = (PyTypeObject *)PyType_Type.tp_new(type, args, kwds); |
| 2298 | if (result == NULL) { |
| 2299 | Py_DECREF((PyObject *)stgdict); |
| 2300 | return NULL; |
| 2301 | } |
| 2302 | |
| 2303 | /* replace the class dict by our updated storage dict */ |
| 2304 | if (-1 == PyDict_Update((PyObject *)stgdict, result->tp_dict)) { |
| 2305 | Py_DECREF(result); |
| 2306 | Py_DECREF((PyObject *)stgdict); |
| 2307 | return NULL; |
| 2308 | } |
| 2309 | Py_DECREF(result->tp_dict); |
| 2310 | result->tp_dict = (PyObject *)stgdict; |
| 2311 | |
| 2312 | if (-1 == make_funcptrtype_dict(stgdict)) { |
| 2313 | Py_DECREF(result); |
| 2314 | return NULL; |
| 2315 | } |
| 2316 | |
| 2317 | return (PyObject *)result; |
| 2318 | } |
| 2319 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2320 | PyTypeObject PyCFuncPtrType_Type = { |
Martin v. Löwis | 6819210 | 2007-07-21 06:55:02 +0000 | [diff] [blame] | 2321 | PyVarObject_HEAD_INIT(NULL, 0) |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2322 | "_ctypes.PyCFuncPtrType", /* tp_name */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2323 | 0, /* tp_basicsize */ |
| 2324 | 0, /* tp_itemsize */ |
| 2325 | 0, /* tp_dealloc */ |
| 2326 | 0, /* tp_print */ |
| 2327 | 0, /* tp_getattr */ |
| 2328 | 0, /* tp_setattr */ |
| 2329 | 0, /* tp_compare */ |
| 2330 | 0, /* tp_repr */ |
| 2331 | 0, /* tp_as_number */ |
| 2332 | &CDataType_as_sequence, /* tp_as_sequence */ |
| 2333 | 0, /* tp_as_mapping */ |
| 2334 | 0, /* tp_hash */ |
| 2335 | 0, /* tp_call */ |
| 2336 | 0, /* tp_str */ |
| 2337 | 0, /* tp_getattro */ |
| 2338 | 0, /* tp_setattro */ |
| 2339 | 0, /* tp_as_buffer */ |
| 2340 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC, /* tp_flags */ |
| 2341 | "metatype for C function pointers", /* tp_doc */ |
| 2342 | (traverseproc)CDataType_traverse, /* tp_traverse */ |
| 2343 | (inquiry)CDataType_clear, /* tp_clear */ |
| 2344 | 0, /* tp_richcompare */ |
| 2345 | 0, /* tp_weaklistoffset */ |
| 2346 | 0, /* tp_iter */ |
| 2347 | 0, /* tp_iternext */ |
| 2348 | CDataType_methods, /* tp_methods */ |
| 2349 | 0, /* tp_members */ |
| 2350 | 0, /* tp_getset */ |
| 2351 | 0, /* tp_base */ |
| 2352 | 0, /* tp_dict */ |
| 2353 | 0, /* tp_descr_get */ |
| 2354 | 0, /* tp_descr_set */ |
| 2355 | 0, /* tp_dictoffset */ |
| 2356 | 0, /* tp_init */ |
| 2357 | 0, /* tp_alloc */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2358 | PyCFuncPtrType_new, /* tp_new */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2359 | 0, /* tp_free */ |
| 2360 | }; |
| 2361 | |
| 2362 | |
| 2363 | /***************************************************************** |
| 2364 | * Code to keep needed objects alive |
| 2365 | */ |
| 2366 | |
| 2367 | static CDataObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2368 | PyCData_GetContainer(CDataObject *self) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2369 | { |
| 2370 | while (self->b_base) |
| 2371 | self = self->b_base; |
| 2372 | if (self->b_objects == NULL) { |
| 2373 | if (self->b_length) { |
| 2374 | self->b_objects = PyDict_New(); |
| 2375 | } else { |
| 2376 | Py_INCREF(Py_None); |
| 2377 | self->b_objects = Py_None; |
| 2378 | } |
| 2379 | } |
| 2380 | return self; |
| 2381 | } |
| 2382 | |
| 2383 | static PyObject * |
| 2384 | GetKeepedObjects(CDataObject *target) |
| 2385 | { |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2386 | return PyCData_GetContainer(target)->b_objects; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2387 | } |
| 2388 | |
| 2389 | static PyObject * |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 2390 | unique_key(CDataObject *target, Py_ssize_t index) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2391 | { |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 2392 | char string[256]; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2393 | char *cp = string; |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 2394 | size_t bytes_left; |
| 2395 | |
| 2396 | assert(sizeof(string) - 1 > sizeof(Py_ssize_t) * 2); |
| 2397 | #if (PY_VERSION_HEX < 0x02050000) |
| 2398 | cp += sprintf(cp, "%x", index); |
| 2399 | #else |
Thomas Heller | 5218ab2 | 2006-06-10 21:07:19 +0000 | [diff] [blame] | 2400 | cp += sprintf(cp, "%x", Py_SAFE_DOWNCAST(index, Py_ssize_t, int)); |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 2401 | #endif |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2402 | while (target->b_base) { |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 2403 | bytes_left = sizeof(string) - (cp - string) - 1; |
| 2404 | /* Hex format needs 2 characters per byte */ |
| 2405 | if (bytes_left < sizeof(Py_ssize_t) * 2) { |
| 2406 | PyErr_SetString(PyExc_ValueError, |
| 2407 | "ctypes object structure too deep"); |
| 2408 | return NULL; |
| 2409 | } |
| 2410 | #if (PY_VERSION_HEX < 0x02050000) |
| 2411 | cp += sprintf(cp, ":%x", (int)target->b_index); |
| 2412 | #else |
Thomas Heller | eb6dcf6 | 2006-06-10 21:17:58 +0000 | [diff] [blame] | 2413 | cp += sprintf(cp, ":%x", Py_SAFE_DOWNCAST(target->b_index, Py_ssize_t, int)); |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 2414 | #endif |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2415 | target = target->b_base; |
| 2416 | } |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2417 | return PyString_FromStringAndSize(string, cp-string); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2418 | } |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 2419 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2420 | /* |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 2421 | * Keep a reference to 'keep' in the 'target', at index 'index'. |
| 2422 | * |
| 2423 | * If 'keep' is None, do nothing. |
| 2424 | * |
| 2425 | * Otherwise create a dictionary (if it does not yet exist) id the root |
| 2426 | * objects 'b_objects' item, which will store the 'keep' object under a unique |
| 2427 | * key. |
| 2428 | * |
| 2429 | * The unique_key helper travels the target's b_base pointer down to the root, |
| 2430 | * building a string containing hex-formatted indexes found during traversal, |
| 2431 | * separated by colons. |
| 2432 | * |
| 2433 | * The index tuple is used as a key into the root object's b_objects dict. |
| 2434 | * |
| 2435 | * Note: This function steals a refcount of the third argument, even if it |
| 2436 | * fails! |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2437 | */ |
| 2438 | static int |
Thomas Heller | fe8f862 | 2006-03-14 19:53:09 +0000 | [diff] [blame] | 2439 | KeepRef(CDataObject *target, Py_ssize_t index, PyObject *keep) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2440 | { |
| 2441 | int result; |
| 2442 | CDataObject *ob; |
| 2443 | PyObject *key; |
| 2444 | |
| 2445 | /* Optimization: no need to store None */ |
| 2446 | if (keep == Py_None) { |
| 2447 | Py_DECREF(Py_None); |
| 2448 | return 0; |
| 2449 | } |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2450 | ob = PyCData_GetContainer(target); |
Thomas Heller | d3ed492 | 2008-04-11 14:20:26 +0000 | [diff] [blame] | 2451 | if (ob->b_objects == NULL || !PyDict_CheckExact(ob->b_objects)) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2452 | Py_XDECREF(ob->b_objects); |
| 2453 | ob->b_objects = keep; /* refcount consumed */ |
| 2454 | return 0; |
| 2455 | } |
| 2456 | key = unique_key(target, index); |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 2457 | if (key == NULL) { |
| 2458 | Py_DECREF(keep); |
| 2459 | return -1; |
| 2460 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2461 | result = PyDict_SetItem(ob->b_objects, key, keep); |
| 2462 | Py_DECREF(key); |
| 2463 | Py_DECREF(keep); |
| 2464 | return result; |
| 2465 | } |
| 2466 | |
| 2467 | /******************************************************************/ |
| 2468 | /* |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2469 | PyCData_Type |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2470 | */ |
| 2471 | static int |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2472 | PyCData_traverse(CDataObject *self, visitproc visit, void *arg) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2473 | { |
| 2474 | Py_VISIT(self->b_objects); |
| 2475 | Py_VISIT((PyObject *)self->b_base); |
| 2476 | return 0; |
| 2477 | } |
| 2478 | |
| 2479 | static int |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2480 | PyCData_clear(CDataObject *self) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2481 | { |
| 2482 | StgDictObject *dict = PyObject_stgdict((PyObject *)self); |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 2483 | assert(dict); /* Cannot be NULL for CDataObject instances */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2484 | Py_CLEAR(self->b_objects); |
| 2485 | if ((self->b_needsfree) |
Skip Montanaro | 058be9a | 2006-04-18 19:45:17 +0000 | [diff] [blame] | 2486 | && ((size_t)dict->size > sizeof(self->b_value))) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2487 | PyMem_Free(self->b_ptr); |
| 2488 | self->b_ptr = NULL; |
| 2489 | Py_CLEAR(self->b_base); |
| 2490 | return 0; |
| 2491 | } |
| 2492 | |
| 2493 | static void |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2494 | PyCData_dealloc(PyObject *self) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2495 | { |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2496 | PyCData_clear((CDataObject *)self); |
Christian Heimes | e93237d | 2007-12-19 02:37:44 +0000 | [diff] [blame] | 2497 | Py_TYPE(self)->tp_free(self); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2498 | } |
| 2499 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2500 | static PyMemberDef PyCData_members[] = { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2501 | { "_b_base_", T_OBJECT, |
| 2502 | offsetof(CDataObject, b_base), READONLY, |
| 2503 | "the base object" }, |
| 2504 | { "_b_needsfree_", T_INT, |
| 2505 | offsetof(CDataObject, b_needsfree), READONLY, |
| 2506 | "whether the object owns the memory or not" }, |
| 2507 | { "_objects", T_OBJECT, |
| 2508 | offsetof(CDataObject, b_objects), READONLY, |
| 2509 | "internal objects tree (NEVER CHANGE THIS OBJECT!)"}, |
| 2510 | { NULL }, |
| 2511 | }; |
| 2512 | |
Thomas Heller | ba55936 | 2008-07-24 11:16:45 +0000 | [diff] [blame] | 2513 | #if (PY_VERSION_HEX >= 0x02060000) |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2514 | static int PyCData_NewGetBuffer(PyObject *_self, Py_buffer *view, int flags) |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 2515 | { |
| 2516 | CDataObject *self = (CDataObject *)_self; |
| 2517 | StgDictObject *dict = PyObject_stgdict(_self); |
| 2518 | Py_ssize_t i; |
| 2519 | |
| 2520 | if (view == NULL) return 0; |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 2521 | |
| 2522 | view->buf = self->b_ptr; |
Martin v. Löwis | 8401eec | 2008-08-14 15:56:07 +0000 | [diff] [blame] | 2523 | view->obj = _self; |
| 2524 | Py_INCREF(_self); |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 2525 | view->len = self->b_size; |
| 2526 | view->readonly = 0; |
| 2527 | /* use default format character if not set */ |
| 2528 | view->format = dict->format ? dict->format : "B"; |
| 2529 | view->ndim = dict->ndim; |
| 2530 | view->shape = dict->shape; |
| 2531 | view->itemsize = self->b_size; |
| 2532 | for (i = 0; i < view->ndim; ++i) { |
| 2533 | view->itemsize /= dict->shape[i]; |
| 2534 | } |
| 2535 | view->strides = NULL; |
| 2536 | view->suboffsets = NULL; |
| 2537 | view->internal = NULL; |
| 2538 | return 0; |
| 2539 | } |
Thomas Heller | ba55936 | 2008-07-24 11:16:45 +0000 | [diff] [blame] | 2540 | #endif |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 2541 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2542 | static Py_ssize_t PyCData_GetSegcount(PyObject *_self, Py_ssize_t *lenp) |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 2543 | { |
| 2544 | if (lenp) |
| 2545 | *lenp = 1; |
| 2546 | return 1; |
| 2547 | } |
| 2548 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2549 | static Py_ssize_t PyCData_GetBuffer(PyObject *_self, Py_ssize_t seg, void **pptr) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2550 | { |
Thomas Heller | ba29e4c | 2006-03-20 10:22:42 +0000 | [diff] [blame] | 2551 | CDataObject *self = (CDataObject *)_self; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2552 | if (seg != 0) { |
| 2553 | /* Hm. Must this set an exception? */ |
| 2554 | return -1; |
| 2555 | } |
| 2556 | *pptr = self->b_ptr; |
| 2557 | return self->b_size; |
| 2558 | } |
| 2559 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2560 | static PyBufferProcs PyCData_as_buffer = { |
| 2561 | (readbufferproc)PyCData_GetBuffer, |
| 2562 | (writebufferproc)PyCData_GetBuffer, |
| 2563 | (segcountproc)PyCData_GetSegcount, |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 2564 | (charbufferproc)NULL, |
Thomas Heller | ba55936 | 2008-07-24 11:16:45 +0000 | [diff] [blame] | 2565 | #if (PY_VERSION_HEX >= 0x02060000) |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2566 | (getbufferproc)PyCData_NewGetBuffer, |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 2567 | (releasebufferproc)NULL, |
Thomas Heller | ba55936 | 2008-07-24 11:16:45 +0000 | [diff] [blame] | 2568 | #endif |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2569 | }; |
| 2570 | |
| 2571 | /* |
| 2572 | * CData objects are mutable, so they cannot be hashable! |
| 2573 | */ |
| 2574 | static long |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2575 | PyCData_nohash(PyObject *self) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2576 | { |
| 2577 | PyErr_SetString(PyExc_TypeError, "unhashable type"); |
| 2578 | return -1; |
| 2579 | } |
| 2580 | |
Thomas Heller | a06a1a8 | 2008-02-13 20:21:53 +0000 | [diff] [blame] | 2581 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2582 | PyCData_reduce(PyObject *_self, PyObject *args) |
Thomas Heller | a06a1a8 | 2008-02-13 20:21:53 +0000 | [diff] [blame] | 2583 | { |
| 2584 | CDataObject *self = (CDataObject *)_self; |
| 2585 | |
| 2586 | if (PyObject_stgdict(_self)->flags & (TYPEFLAG_ISPOINTER|TYPEFLAG_HASPOINTER)) { |
| 2587 | PyErr_SetString(PyExc_ValueError, |
| 2588 | "ctypes objects containing pointers cannot be pickled"); |
| 2589 | return NULL; |
| 2590 | } |
| 2591 | return Py_BuildValue("O(O(NN))", |
| 2592 | _unpickle, |
| 2593 | Py_TYPE(_self), |
| 2594 | PyObject_GetAttrString(_self, "__dict__"), |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 2595 | PyString_FromStringAndSize(self->b_ptr, self->b_size)); |
Thomas Heller | a06a1a8 | 2008-02-13 20:21:53 +0000 | [diff] [blame] | 2596 | } |
| 2597 | |
| 2598 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2599 | PyCData_setstate(PyObject *_self, PyObject *args) |
Thomas Heller | a06a1a8 | 2008-02-13 20:21:53 +0000 | [diff] [blame] | 2600 | { |
| 2601 | void *data; |
Thomas Heller | fffd939 | 2008-03-25 21:18:39 +0000 | [diff] [blame] | 2602 | Py_ssize_t len; |
Thomas Heller | a06a1a8 | 2008-02-13 20:21:53 +0000 | [diff] [blame] | 2603 | int res; |
| 2604 | PyObject *dict, *mydict; |
| 2605 | CDataObject *self = (CDataObject *)_self; |
| 2606 | if (!PyArg_ParseTuple(args, "Os#", &dict, &data, &len)) |
| 2607 | return NULL; |
| 2608 | if (len > self->b_size) |
| 2609 | len = self->b_size; |
| 2610 | memmove(self->b_ptr, data, len); |
| 2611 | mydict = PyObject_GetAttrString(_self, "__dict__"); |
| 2612 | res = PyDict_Update(mydict, dict); |
| 2613 | Py_DECREF(mydict); |
| 2614 | if (res == -1) |
| 2615 | return NULL; |
| 2616 | Py_INCREF(Py_None); |
| 2617 | return Py_None; |
| 2618 | } |
| 2619 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2620 | /* |
| 2621 | * default __ctypes_from_outparam__ method returns self. |
| 2622 | */ |
| 2623 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2624 | PyCData_from_outparam(PyObject *self, PyObject *args) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2625 | { |
| 2626 | Py_INCREF(self); |
| 2627 | return self; |
| 2628 | } |
| 2629 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2630 | static PyMethodDef PyCData_methods[] = { |
| 2631 | { "__ctypes_from_outparam__", PyCData_from_outparam, METH_NOARGS, }, |
| 2632 | { "__reduce__", PyCData_reduce, METH_NOARGS, }, |
| 2633 | { "__setstate__", PyCData_setstate, METH_VARARGS, }, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2634 | { NULL, NULL }, |
| 2635 | }; |
| 2636 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2637 | PyTypeObject PyCData_Type = { |
Martin v. Löwis | 6819210 | 2007-07-21 06:55:02 +0000 | [diff] [blame] | 2638 | PyVarObject_HEAD_INIT(NULL, 0) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2639 | "_ctypes._CData", |
| 2640 | sizeof(CDataObject), /* tp_basicsize */ |
| 2641 | 0, /* tp_itemsize */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2642 | PyCData_dealloc, /* tp_dealloc */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2643 | 0, /* tp_print */ |
| 2644 | 0, /* tp_getattr */ |
| 2645 | 0, /* tp_setattr */ |
| 2646 | 0, /* tp_compare */ |
| 2647 | 0, /* tp_repr */ |
| 2648 | 0, /* tp_as_number */ |
| 2649 | 0, /* tp_as_sequence */ |
| 2650 | 0, /* tp_as_mapping */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2651 | PyCData_nohash, /* tp_hash */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2652 | 0, /* tp_call */ |
| 2653 | 0, /* tp_str */ |
| 2654 | 0, /* tp_getattro */ |
| 2655 | 0, /* tp_setattro */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2656 | &PyCData_as_buffer, /* tp_as_buffer */ |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 2657 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_NEWBUFFER | Py_TPFLAGS_BASETYPE, /* tp_flags */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2658 | "XXX to be provided", /* tp_doc */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2659 | (traverseproc)PyCData_traverse, /* tp_traverse */ |
| 2660 | (inquiry)PyCData_clear, /* tp_clear */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2661 | 0, /* tp_richcompare */ |
| 2662 | 0, /* tp_weaklistoffset */ |
| 2663 | 0, /* tp_iter */ |
| 2664 | 0, /* tp_iternext */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2665 | PyCData_methods, /* tp_methods */ |
| 2666 | PyCData_members, /* tp_members */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2667 | 0, /* tp_getset */ |
| 2668 | 0, /* tp_base */ |
| 2669 | 0, /* tp_dict */ |
| 2670 | 0, /* tp_descr_get */ |
| 2671 | 0, /* tp_descr_set */ |
| 2672 | 0, /* tp_dictoffset */ |
| 2673 | 0, /* tp_init */ |
| 2674 | 0, /* tp_alloc */ |
| 2675 | 0, /* tp_new */ |
| 2676 | 0, /* tp_free */ |
| 2677 | }; |
| 2678 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2679 | static int PyCData_MallocBuffer(CDataObject *obj, StgDictObject *dict) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2680 | { |
Skip Montanaro | 058be9a | 2006-04-18 19:45:17 +0000 | [diff] [blame] | 2681 | if ((size_t)dict->size <= sizeof(obj->b_value)) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2682 | /* No need to call malloc, can use the default buffer */ |
| 2683 | obj->b_ptr = (char *)&obj->b_value; |
Thomas Heller | 82730f8 | 2007-03-22 20:34:37 +0000 | [diff] [blame] | 2684 | /* The b_needsfree flag does not mean that we actually did |
| 2685 | call PyMem_Malloc to allocate the memory block; instead it |
| 2686 | means we are the *owner* of the memory and are responsible |
| 2687 | for freeing resources associated with the memory. This is |
| 2688 | also the reason that b_needsfree is exposed to Python. |
| 2689 | */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2690 | obj->b_needsfree = 1; |
| 2691 | } else { |
| 2692 | /* In python 2.4, and ctypes 0.9.6, the malloc call took about |
| 2693 | 33% of the creation time for c_int(). |
| 2694 | */ |
Skip Montanaro | 058be9a | 2006-04-18 19:45:17 +0000 | [diff] [blame] | 2695 | obj->b_ptr = (char *)PyMem_Malloc(dict->size); |
Thomas Heller | e6a7039 | 2007-03-23 19:55:27 +0000 | [diff] [blame] | 2696 | if (obj->b_ptr == NULL) { |
| 2697 | PyErr_NoMemory(); |
| 2698 | return -1; |
| 2699 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2700 | obj->b_needsfree = 1; |
| 2701 | memset(obj->b_ptr, 0, dict->size); |
| 2702 | } |
| 2703 | obj->b_size = dict->size; |
Thomas Heller | e6a7039 | 2007-03-23 19:55:27 +0000 | [diff] [blame] | 2704 | return 0; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2705 | } |
| 2706 | |
| 2707 | PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2708 | PyCData_FromBaseObj(PyObject *type, PyObject *base, Py_ssize_t index, char *adr) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2709 | { |
| 2710 | CDataObject *cmem; |
| 2711 | StgDictObject *dict; |
| 2712 | |
| 2713 | assert(PyType_Check(type)); |
| 2714 | dict = PyType_stgdict(type); |
| 2715 | if (!dict) { |
| 2716 | PyErr_SetString(PyExc_TypeError, |
| 2717 | "abstract class"); |
| 2718 | return NULL; |
| 2719 | } |
| 2720 | dict->flags |= DICTFLAG_FINAL; |
| 2721 | cmem = (CDataObject *)((PyTypeObject *)type)->tp_alloc((PyTypeObject *)type, 0); |
| 2722 | if (cmem == NULL) |
| 2723 | return NULL; |
| 2724 | assert(CDataObject_Check(cmem)); |
| 2725 | |
| 2726 | cmem->b_length = dict->length; |
| 2727 | cmem->b_size = dict->size; |
| 2728 | if (base) { /* use base's buffer */ |
| 2729 | assert(CDataObject_Check(base)); |
| 2730 | cmem->b_ptr = adr; |
| 2731 | cmem->b_needsfree = 0; |
| 2732 | Py_INCREF(base); |
| 2733 | cmem->b_base = (CDataObject *)base; |
| 2734 | cmem->b_index = index; |
| 2735 | } else { /* copy contents of adr */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2736 | if (-1 == PyCData_MallocBuffer(cmem, dict)) { |
Thomas Heller | e6a7039 | 2007-03-23 19:55:27 +0000 | [diff] [blame] | 2737 | return NULL; |
| 2738 | Py_DECREF(cmem); |
| 2739 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2740 | memcpy(cmem->b_ptr, adr, dict->size); |
| 2741 | cmem->b_index = index; |
| 2742 | } |
| 2743 | return (PyObject *)cmem; |
| 2744 | } |
| 2745 | |
| 2746 | /* |
| 2747 | Box a memory block into a CData instance. |
| 2748 | */ |
| 2749 | PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2750 | PyCData_AtAddress(PyObject *type, void *buf) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2751 | { |
| 2752 | CDataObject *pd; |
| 2753 | StgDictObject *dict; |
| 2754 | |
| 2755 | assert(PyType_Check(type)); |
| 2756 | dict = PyType_stgdict(type); |
| 2757 | if (!dict) { |
| 2758 | PyErr_SetString(PyExc_TypeError, |
| 2759 | "abstract class"); |
| 2760 | return NULL; |
| 2761 | } |
| 2762 | dict->flags |= DICTFLAG_FINAL; |
| 2763 | |
| 2764 | pd = (CDataObject *)((PyTypeObject *)type)->tp_alloc((PyTypeObject *)type, 0); |
| 2765 | if (!pd) |
| 2766 | return NULL; |
| 2767 | assert(CDataObject_Check(pd)); |
Skip Montanaro | 058be9a | 2006-04-18 19:45:17 +0000 | [diff] [blame] | 2768 | pd->b_ptr = (char *)buf; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2769 | pd->b_length = dict->length; |
| 2770 | pd->b_size = dict->size; |
| 2771 | return (PyObject *)pd; |
| 2772 | } |
| 2773 | |
| 2774 | /* |
| 2775 | This function returns TRUE for c_int, c_void_p, and these kind of |
| 2776 | classes. FALSE otherwise FALSE also for subclasses of c_int and |
| 2777 | such. |
| 2778 | */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2779 | int _ctypes_simple_instance(PyObject *obj) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2780 | { |
| 2781 | PyTypeObject *type = (PyTypeObject *)obj; |
| 2782 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2783 | if (PyCSimpleTypeObject_Check(type)) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2784 | return type->tp_base != &Simple_Type; |
| 2785 | return 0; |
| 2786 | } |
| 2787 | |
| 2788 | PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2789 | PyCData_get(PyObject *type, GETFUNC getfunc, PyObject *src, |
Thomas Heller | fe8f862 | 2006-03-14 19:53:09 +0000 | [diff] [blame] | 2790 | Py_ssize_t index, Py_ssize_t size, char *adr) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2791 | { |
| 2792 | StgDictObject *dict; |
| 2793 | if (getfunc) |
| 2794 | return getfunc(adr, size); |
| 2795 | assert(type); |
| 2796 | dict = PyType_stgdict(type); |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2797 | if (dict && dict->getfunc && !_ctypes_simple_instance(type)) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2798 | return dict->getfunc(adr, size); |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2799 | return PyCData_FromBaseObj(type, src, index, adr); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2800 | } |
| 2801 | |
| 2802 | /* |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2803 | Helper function for PyCData_set below. |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2804 | */ |
| 2805 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2806 | _PyCData_set(CDataObject *dst, PyObject *type, SETFUNC setfunc, PyObject *value, |
Thomas Heller | fe8f862 | 2006-03-14 19:53:09 +0000 | [diff] [blame] | 2807 | Py_ssize_t size, char *ptr) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2808 | { |
| 2809 | CDataObject *src; |
| 2810 | |
| 2811 | if (setfunc) |
| 2812 | return setfunc(ptr, value, size); |
| 2813 | |
| 2814 | if (!CDataObject_Check(value)) { |
| 2815 | StgDictObject *dict = PyType_stgdict(type); |
| 2816 | if (dict && dict->setfunc) |
| 2817 | return dict->setfunc(ptr, value, size); |
| 2818 | /* |
| 2819 | If value is a tuple, we try to call the type with the tuple |
| 2820 | and use the result! |
| 2821 | */ |
| 2822 | assert(PyType_Check(type)); |
| 2823 | if (PyTuple_Check(value)) { |
| 2824 | PyObject *ob; |
| 2825 | PyObject *result; |
| 2826 | ob = PyObject_CallObject(type, value); |
| 2827 | if (ob == NULL) { |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2828 | _ctypes_extend_error(PyExc_RuntimeError, "(%s) ", |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2829 | ((PyTypeObject *)type)->tp_name); |
| 2830 | return NULL; |
| 2831 | } |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2832 | result = _PyCData_set(dst, type, setfunc, ob, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2833 | size, ptr); |
| 2834 | Py_DECREF(ob); |
| 2835 | return result; |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2836 | } else if (value == Py_None && PyCPointerTypeObject_Check(type)) { |
Thomas Heller | 7644262 | 2006-07-10 11:11:10 +0000 | [diff] [blame] | 2837 | *(void **)ptr = NULL; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2838 | Py_INCREF(Py_None); |
| 2839 | return Py_None; |
| 2840 | } else { |
| 2841 | PyErr_Format(PyExc_TypeError, |
| 2842 | "expected %s instance, got %s", |
| 2843 | ((PyTypeObject *)type)->tp_name, |
Christian Heimes | e93237d | 2007-12-19 02:37:44 +0000 | [diff] [blame] | 2844 | Py_TYPE(value)->tp_name); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2845 | return NULL; |
| 2846 | } |
| 2847 | } |
| 2848 | src = (CDataObject *)value; |
| 2849 | |
| 2850 | if (PyObject_IsInstance(value, type)) { |
| 2851 | memcpy(ptr, |
| 2852 | src->b_ptr, |
| 2853 | size); |
| 2854 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2855 | if (PyCPointerTypeObject_Check(type)) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2856 | /* XXX */; |
| 2857 | |
| 2858 | value = GetKeepedObjects(src); |
| 2859 | Py_INCREF(value); |
| 2860 | return value; |
| 2861 | } |
| 2862 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2863 | if (PyCPointerTypeObject_Check(type) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2864 | && ArrayObject_Check(value)) { |
| 2865 | StgDictObject *p1, *p2; |
| 2866 | PyObject *keep; |
| 2867 | p1 = PyObject_stgdict(value); |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 2868 | assert(p1); /* Cannot be NULL for array instances */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2869 | p2 = PyType_stgdict(type); |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 2870 | assert(p2); /* Cannot be NULL for pointer types */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2871 | |
| 2872 | if (p1->proto != p2->proto) { |
| 2873 | PyErr_Format(PyExc_TypeError, |
| 2874 | "incompatible types, %s instance instead of %s instance", |
Christian Heimes | e93237d | 2007-12-19 02:37:44 +0000 | [diff] [blame] | 2875 | Py_TYPE(value)->tp_name, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2876 | ((PyTypeObject *)type)->tp_name); |
| 2877 | return NULL; |
| 2878 | } |
| 2879 | *(void **)ptr = src->b_ptr; |
| 2880 | |
| 2881 | keep = GetKeepedObjects(src); |
| 2882 | /* |
| 2883 | We are assigning an array object to a field which represents |
| 2884 | a pointer. This has the same effect as converting an array |
| 2885 | into a pointer. So, again, we have to keep the whole object |
| 2886 | pointed to (which is the array in this case) alive, and not |
| 2887 | only it's object list. So we create a tuple, containing |
| 2888 | b_objects list PLUS the array itself, and return that! |
| 2889 | */ |
Thomas Heller | 71dba4c | 2008-01-24 18:54:12 +0000 | [diff] [blame] | 2890 | return PyTuple_Pack(2, keep, value); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2891 | } |
| 2892 | PyErr_Format(PyExc_TypeError, |
| 2893 | "incompatible types, %s instance instead of %s instance", |
Christian Heimes | e93237d | 2007-12-19 02:37:44 +0000 | [diff] [blame] | 2894 | Py_TYPE(value)->tp_name, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2895 | ((PyTypeObject *)type)->tp_name); |
| 2896 | return NULL; |
| 2897 | } |
| 2898 | |
| 2899 | /* |
| 2900 | * Set a slice in object 'dst', which has the type 'type', |
| 2901 | * to the value 'value'. |
| 2902 | */ |
| 2903 | int |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2904 | PyCData_set(PyObject *dst, PyObject *type, SETFUNC setfunc, PyObject *value, |
Thomas Heller | fe8f862 | 2006-03-14 19:53:09 +0000 | [diff] [blame] | 2905 | Py_ssize_t index, Py_ssize_t size, char *ptr) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2906 | { |
| 2907 | CDataObject *mem = (CDataObject *)dst; |
| 2908 | PyObject *result; |
| 2909 | |
| 2910 | if (!CDataObject_Check(dst)) { |
| 2911 | PyErr_SetString(PyExc_TypeError, |
| 2912 | "not a ctype instance"); |
| 2913 | return -1; |
| 2914 | } |
| 2915 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2916 | result = _PyCData_set(mem, type, setfunc, value, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2917 | size, ptr); |
| 2918 | if (result == NULL) |
| 2919 | return -1; |
| 2920 | |
| 2921 | /* KeepRef steals a refcount from it's last argument */ |
| 2922 | /* If KeepRef fails, we are stumped. The dst memory block has already |
| 2923 | been changed */ |
| 2924 | return KeepRef(mem, index, result); |
| 2925 | } |
| 2926 | |
| 2927 | |
| 2928 | /******************************************************************/ |
| 2929 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2930 | GenericPyCData_new(PyTypeObject *type, PyObject *args, PyObject *kwds) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2931 | { |
| 2932 | CDataObject *obj; |
| 2933 | StgDictObject *dict; |
| 2934 | |
| 2935 | dict = PyType_stgdict((PyObject *)type); |
| 2936 | if (!dict) { |
| 2937 | PyErr_SetString(PyExc_TypeError, |
| 2938 | "abstract class"); |
| 2939 | return NULL; |
| 2940 | } |
| 2941 | dict->flags |= DICTFLAG_FINAL; |
| 2942 | |
| 2943 | obj = (CDataObject *)type->tp_alloc(type, 0); |
| 2944 | if (!obj) |
| 2945 | return NULL; |
| 2946 | |
| 2947 | obj->b_base = NULL; |
| 2948 | obj->b_index = 0; |
| 2949 | obj->b_objects = NULL; |
| 2950 | obj->b_length = dict->length; |
| 2951 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2952 | if (-1 == PyCData_MallocBuffer(obj, dict)) { |
Thomas Heller | e6a7039 | 2007-03-23 19:55:27 +0000 | [diff] [blame] | 2953 | Py_DECREF(obj); |
| 2954 | return NULL; |
| 2955 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2956 | return (PyObject *)obj; |
| 2957 | } |
| 2958 | /*****************************************************************/ |
| 2959 | /* |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2960 | PyCFuncPtr_Type |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2961 | */ |
| 2962 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2963 | static int |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2964 | PyCFuncPtr_set_errcheck(PyCFuncPtrObject *self, PyObject *ob) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2965 | { |
| 2966 | if (ob && !PyCallable_Check(ob)) { |
| 2967 | PyErr_SetString(PyExc_TypeError, |
| 2968 | "the errcheck attribute must be callable"); |
| 2969 | return -1; |
| 2970 | } |
| 2971 | Py_XDECREF(self->errcheck); |
| 2972 | Py_XINCREF(ob); |
| 2973 | self->errcheck = ob; |
| 2974 | return 0; |
| 2975 | } |
| 2976 | |
| 2977 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2978 | PyCFuncPtr_get_errcheck(PyCFuncPtrObject *self) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2979 | { |
| 2980 | if (self->errcheck) { |
| 2981 | Py_INCREF(self->errcheck); |
| 2982 | return self->errcheck; |
| 2983 | } |
| 2984 | Py_INCREF(Py_None); |
| 2985 | return Py_None; |
| 2986 | } |
| 2987 | |
| 2988 | static int |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 2989 | PyCFuncPtr_set_restype(PyCFuncPtrObject *self, PyObject *ob) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 2990 | { |
| 2991 | if (ob == NULL) { |
| 2992 | Py_XDECREF(self->restype); |
| 2993 | self->restype = NULL; |
| 2994 | Py_XDECREF(self->checker); |
| 2995 | self->checker = NULL; |
| 2996 | return 0; |
| 2997 | } |
| 2998 | if (ob != Py_None && !PyType_stgdict(ob) && !PyCallable_Check(ob)) { |
| 2999 | PyErr_SetString(PyExc_TypeError, |
| 3000 | "restype must be a type, a callable, or None"); |
| 3001 | return -1; |
| 3002 | } |
| 3003 | Py_XDECREF(self->checker); |
| 3004 | Py_XDECREF(self->restype); |
| 3005 | Py_INCREF(ob); |
| 3006 | self->restype = ob; |
| 3007 | self->checker = PyObject_GetAttrString(ob, "_check_retval_"); |
| 3008 | if (self->checker == NULL) |
| 3009 | PyErr_Clear(); |
| 3010 | return 0; |
| 3011 | } |
| 3012 | |
| 3013 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3014 | PyCFuncPtr_get_restype(PyCFuncPtrObject *self) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3015 | { |
| 3016 | StgDictObject *dict; |
| 3017 | if (self->restype) { |
| 3018 | Py_INCREF(self->restype); |
| 3019 | return self->restype; |
| 3020 | } |
| 3021 | dict = PyObject_stgdict((PyObject *)self); |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3022 | assert(dict); /* Cannot be NULL for PyCFuncPtrObject instances */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3023 | if (dict->restype) { |
| 3024 | Py_INCREF(dict->restype); |
| 3025 | return dict->restype; |
| 3026 | } else { |
| 3027 | Py_INCREF(Py_None); |
| 3028 | return Py_None; |
| 3029 | } |
| 3030 | } |
| 3031 | |
| 3032 | static int |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3033 | PyCFuncPtr_set_argtypes(PyCFuncPtrObject *self, PyObject *ob) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3034 | { |
| 3035 | PyObject *converters; |
| 3036 | |
| 3037 | if (ob == NULL || ob == Py_None) { |
| 3038 | Py_XDECREF(self->converters); |
| 3039 | self->converters = NULL; |
| 3040 | Py_XDECREF(self->argtypes); |
| 3041 | self->argtypes = NULL; |
| 3042 | } else { |
| 3043 | converters = converters_from_argtypes(ob); |
| 3044 | if (!converters) |
| 3045 | return -1; |
| 3046 | Py_XDECREF(self->converters); |
| 3047 | self->converters = converters; |
| 3048 | Py_XDECREF(self->argtypes); |
| 3049 | Py_INCREF(ob); |
| 3050 | self->argtypes = ob; |
| 3051 | } |
| 3052 | return 0; |
| 3053 | } |
| 3054 | |
| 3055 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3056 | PyCFuncPtr_get_argtypes(PyCFuncPtrObject *self) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3057 | { |
| 3058 | StgDictObject *dict; |
| 3059 | if (self->argtypes) { |
| 3060 | Py_INCREF(self->argtypes); |
| 3061 | return self->argtypes; |
| 3062 | } |
| 3063 | dict = PyObject_stgdict((PyObject *)self); |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3064 | assert(dict); /* Cannot be NULL for PyCFuncPtrObject instances */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3065 | if (dict->argtypes) { |
| 3066 | Py_INCREF(dict->argtypes); |
| 3067 | return dict->argtypes; |
| 3068 | } else { |
| 3069 | Py_INCREF(Py_None); |
| 3070 | return Py_None; |
| 3071 | } |
| 3072 | } |
| 3073 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3074 | static PyGetSetDef PyCFuncPtr_getsets[] = { |
| 3075 | { "errcheck", (getter)PyCFuncPtr_get_errcheck, (setter)PyCFuncPtr_set_errcheck, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3076 | "a function to check for errors", NULL }, |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3077 | { "restype", (getter)PyCFuncPtr_get_restype, (setter)PyCFuncPtr_set_restype, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3078 | "specify the result type", NULL }, |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3079 | { "argtypes", (getter)PyCFuncPtr_get_argtypes, |
| 3080 | (setter)PyCFuncPtr_set_argtypes, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3081 | "specify the argument types", NULL }, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3082 | { NULL, NULL } |
| 3083 | }; |
| 3084 | |
| 3085 | #ifdef MS_WIN32 |
| 3086 | static PPROC FindAddress(void *handle, char *name, PyObject *type) |
| 3087 | { |
Thomas Heller | e81c9f6 | 2007-06-08 18:20:09 +0000 | [diff] [blame] | 3088 | #ifdef MS_WIN64 |
| 3089 | /* win64 has no stdcall calling conv, so it should |
| 3090 | also not have the name mangling of it. |
| 3091 | */ |
| 3092 | return (PPROC)GetProcAddress(handle, name); |
| 3093 | #else |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3094 | PPROC address; |
| 3095 | char *mangled_name; |
| 3096 | int i; |
Thomas Heller | 98619f2 | 2006-08-25 07:27:33 +0000 | [diff] [blame] | 3097 | StgDictObject *dict; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3098 | |
| 3099 | address = (PPROC)GetProcAddress(handle, name); |
| 3100 | if (address) |
| 3101 | return address; |
Thomas Heller | b03cb60 | 2006-03-17 15:52:58 +0000 | [diff] [blame] | 3102 | if (((size_t)name & ~0xFFFF) == 0) { |
| 3103 | return NULL; |
| 3104 | } |
| 3105 | |
Thomas Heller | 98619f2 | 2006-08-25 07:27:33 +0000 | [diff] [blame] | 3106 | dict = PyType_stgdict((PyObject *)type); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3107 | /* It should not happen that dict is NULL, but better be safe */ |
| 3108 | if (dict==NULL || dict->flags & FUNCFLAG_CDECL) |
| 3109 | return address; |
| 3110 | |
| 3111 | /* for stdcall, try mangled names: |
| 3112 | funcname -> _funcname@<n> |
| 3113 | where n is 0, 4, 8, 12, ..., 128 |
| 3114 | */ |
Thomas Heller | 59feb6f | 2006-03-22 12:59:53 +0000 | [diff] [blame] | 3115 | mangled_name = alloca(strlen(name) + 1 + 1 + 1 + 3); /* \0 _ @ %d */ |
Neal Norwitz | 93bf902 | 2006-08-13 18:40:39 +0000 | [diff] [blame] | 3116 | if (!mangled_name) |
| 3117 | return NULL; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3118 | for (i = 0; i < 32; ++i) { |
| 3119 | sprintf(mangled_name, "_%s@%d", name, i*4); |
| 3120 | address = (PPROC)GetProcAddress(handle, mangled_name); |
| 3121 | if (address) |
| 3122 | return address; |
| 3123 | } |
| 3124 | return NULL; |
Thomas Heller | 98619f2 | 2006-08-25 07:27:33 +0000 | [diff] [blame] | 3125 | #endif |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3126 | } |
| 3127 | #endif |
| 3128 | |
| 3129 | /* Return 1 if usable, 0 else and exception set. */ |
| 3130 | static int |
Thomas Heller | e81c9f6 | 2007-06-08 18:20:09 +0000 | [diff] [blame] | 3131 | _check_outarg_type(PyObject *arg, Py_ssize_t index) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3132 | { |
| 3133 | StgDictObject *dict; |
| 3134 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3135 | if (PyCPointerTypeObject_Check(arg)) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3136 | return 1; |
| 3137 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3138 | if (PyCArrayTypeObject_Check(arg)) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3139 | return 1; |
| 3140 | |
| 3141 | dict = PyType_stgdict(arg); |
| 3142 | if (dict |
| 3143 | /* simple pointer types, c_void_p, c_wchar_p, BSTR, ... */ |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 3144 | && PyString_Check(dict->proto) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3145 | /* We only allow c_void_p, c_char_p and c_wchar_p as a simple output parameter type */ |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 3146 | && (strchr("PzZ", PyString_AS_STRING(dict->proto)[0]))) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3147 | return 1; |
| 3148 | } |
| 3149 | |
| 3150 | PyErr_Format(PyExc_TypeError, |
| 3151 | "'out' parameter %d must be a pointer type, not %s", |
Thomas Heller | e81c9f6 | 2007-06-08 18:20:09 +0000 | [diff] [blame] | 3152 | Py_SAFE_DOWNCAST(index, Py_ssize_t, int), |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3153 | PyType_Check(arg) ? |
| 3154 | ((PyTypeObject *)arg)->tp_name : |
Christian Heimes | e93237d | 2007-12-19 02:37:44 +0000 | [diff] [blame] | 3155 | Py_TYPE(arg)->tp_name); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3156 | return 0; |
| 3157 | } |
| 3158 | |
| 3159 | /* Returns 1 on success, 0 on error */ |
| 3160 | static int |
| 3161 | _validate_paramflags(PyTypeObject *type, PyObject *paramflags) |
| 3162 | { |
Thomas Heller | e81c9f6 | 2007-06-08 18:20:09 +0000 | [diff] [blame] | 3163 | Py_ssize_t i, len; |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 3164 | StgDictObject *dict; |
| 3165 | PyObject *argtypes; |
| 3166 | |
| 3167 | dict = PyType_stgdict((PyObject *)type); |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3168 | assert(dict); /* Cannot be NULL. 'type' is a PyCFuncPtr type. */ |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 3169 | argtypes = dict->argtypes; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3170 | |
| 3171 | if (paramflags == NULL || dict->argtypes == NULL) |
| 3172 | return 1; |
| 3173 | |
| 3174 | if (!PyTuple_Check(paramflags)) { |
| 3175 | PyErr_SetString(PyExc_TypeError, |
| 3176 | "paramflags must be a tuple or None"); |
| 3177 | return 0; |
| 3178 | } |
| 3179 | |
| 3180 | len = PyTuple_GET_SIZE(paramflags); |
| 3181 | if (len != PyTuple_GET_SIZE(dict->argtypes)) { |
| 3182 | PyErr_SetString(PyExc_ValueError, |
| 3183 | "paramflags must have the same length as argtypes"); |
| 3184 | return 0; |
| 3185 | } |
| 3186 | |
| 3187 | for (i = 0; i < len; ++i) { |
| 3188 | PyObject *item = PyTuple_GET_ITEM(paramflags, i); |
| 3189 | int flag; |
| 3190 | char *name; |
| 3191 | PyObject *defval; |
| 3192 | PyObject *typ; |
| 3193 | if (!PyArg_ParseTuple(item, "i|zO", &flag, &name, &defval)) { |
| 3194 | PyErr_SetString(PyExc_TypeError, |
| 3195 | "paramflags must be a sequence of (int [,string [,value]]) tuples"); |
| 3196 | return 0; |
| 3197 | } |
| 3198 | typ = PyTuple_GET_ITEM(argtypes, i); |
| 3199 | switch (flag & (PARAMFLAG_FIN | PARAMFLAG_FOUT | PARAMFLAG_FLCID)) { |
| 3200 | case 0: |
| 3201 | case PARAMFLAG_FIN: |
| 3202 | case PARAMFLAG_FIN | PARAMFLAG_FLCID: |
| 3203 | case PARAMFLAG_FIN | PARAMFLAG_FOUT: |
| 3204 | break; |
| 3205 | case PARAMFLAG_FOUT: |
| 3206 | if (!_check_outarg_type(typ, i+1)) |
| 3207 | return 0; |
| 3208 | break; |
| 3209 | default: |
| 3210 | PyErr_Format(PyExc_TypeError, |
| 3211 | "paramflag value %d not supported", |
| 3212 | flag); |
| 3213 | return 0; |
| 3214 | } |
| 3215 | } |
| 3216 | return 1; |
| 3217 | } |
| 3218 | |
Thomas Heller | b03cb60 | 2006-03-17 15:52:58 +0000 | [diff] [blame] | 3219 | static int |
| 3220 | _get_name(PyObject *obj, char **pname) |
| 3221 | { |
| 3222 | #ifdef MS_WIN32 |
| 3223 | if (PyInt_Check(obj) || PyLong_Check(obj)) { |
| 3224 | /* We have to use MAKEINTRESOURCEA for Windows CE. |
| 3225 | Works on Windows as well, of course. |
| 3226 | */ |
| 3227 | *pname = MAKEINTRESOURCEA(PyInt_AsUnsignedLongMask(obj) & 0xFFFF); |
| 3228 | return 1; |
| 3229 | } |
| 3230 | #endif |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 3231 | if (PyString_Check(obj) || PyUnicode_Check(obj)) { |
| 3232 | *pname = PyString_AsString(obj); |
Thomas Heller | e2061dc | 2006-03-20 08:28:19 +0000 | [diff] [blame] | 3233 | return *pname ? 1 : 0; |
Thomas Heller | b03cb60 | 2006-03-17 15:52:58 +0000 | [diff] [blame] | 3234 | } |
| 3235 | PyErr_SetString(PyExc_TypeError, |
| 3236 | "function name must be string or integer"); |
| 3237 | return 0; |
| 3238 | } |
| 3239 | |
| 3240 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3241 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3242 | PyCFuncPtr_FromDll(PyTypeObject *type, PyObject *args, PyObject *kwds) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3243 | { |
| 3244 | char *name; |
| 3245 | int (* address)(void); |
| 3246 | PyObject *dll; |
| 3247 | PyObject *obj; |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3248 | PyCFuncPtrObject *self; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3249 | void *handle; |
| 3250 | PyObject *paramflags = NULL; |
| 3251 | |
Thomas Heller | b03cb60 | 2006-03-17 15:52:58 +0000 | [diff] [blame] | 3252 | if (!PyArg_ParseTuple(args, "(O&O)|O", _get_name, &name, &dll, ¶mflags)) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3253 | return NULL; |
| 3254 | if (paramflags == Py_None) |
| 3255 | paramflags = NULL; |
| 3256 | |
| 3257 | obj = PyObject_GetAttrString(dll, "_handle"); |
| 3258 | if (!obj) |
| 3259 | return NULL; |
| 3260 | if (!PyInt_Check(obj) && !PyLong_Check(obj)) { |
| 3261 | PyErr_SetString(PyExc_TypeError, |
| 3262 | "the _handle attribute of the second argument must be an integer"); |
| 3263 | Py_DECREF(obj); |
| 3264 | return NULL; |
| 3265 | } |
| 3266 | handle = (void *)PyLong_AsVoidPtr(obj); |
| 3267 | Py_DECREF(obj); |
| 3268 | if (PyErr_Occurred()) { |
| 3269 | PyErr_SetString(PyExc_ValueError, |
| 3270 | "could not convert the _handle attribute to a pointer"); |
| 3271 | return NULL; |
| 3272 | } |
| 3273 | |
| 3274 | #ifdef MS_WIN32 |
| 3275 | address = FindAddress(handle, name, (PyObject *)type); |
| 3276 | if (!address) { |
Thomas Heller | 59feb6f | 2006-03-22 12:59:53 +0000 | [diff] [blame] | 3277 | if (!IS_INTRESOURCE(name)) |
Thomas Heller | b03cb60 | 2006-03-17 15:52:58 +0000 | [diff] [blame] | 3278 | PyErr_Format(PyExc_AttributeError, |
| 3279 | "function '%s' not found", |
| 3280 | name); |
| 3281 | else |
| 3282 | PyErr_Format(PyExc_AttributeError, |
| 3283 | "function ordinal %d not found", |
Thomas Heller | 59feb6f | 2006-03-22 12:59:53 +0000 | [diff] [blame] | 3284 | (WORD)(size_t)name); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3285 | return NULL; |
| 3286 | } |
| 3287 | #else |
| 3288 | address = (PPROC)ctypes_dlsym(handle, name); |
| 3289 | if (!address) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3290 | #ifdef __CYGWIN__ |
| 3291 | /* dlerror() isn't very helpful on cygwin */ |
Georg Brandl | 2c07929 | 2009-02-13 11:10:04 +0000 | [diff] [blame] | 3292 | PyErr_Format(PyExc_AttributeError, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3293 | "function '%s' not found (%s) ", |
Georg Brandl | 2c07929 | 2009-02-13 11:10:04 +0000 | [diff] [blame] | 3294 | name); |
| 3295 | #else |
| 3296 | PyErr_SetString(PyExc_AttributeError, ctypes_dlerror()); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3297 | #endif |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3298 | return NULL; |
| 3299 | } |
| 3300 | #endif |
| 3301 | if (!_validate_paramflags(type, paramflags)) |
| 3302 | return NULL; |
| 3303 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3304 | self = (PyCFuncPtrObject *)GenericPyCData_new(type, args, kwds); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3305 | if (!self) |
| 3306 | return NULL; |
| 3307 | |
| 3308 | Py_XINCREF(paramflags); |
| 3309 | self->paramflags = paramflags; |
| 3310 | |
| 3311 | *(void **)self->b_ptr = address; |
| 3312 | |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 3313 | Py_INCREF((PyObject *)dll); /* for KeepRef */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3314 | if (-1 == KeepRef((CDataObject *)self, 0, dll)) { |
| 3315 | Py_DECREF((PyObject *)self); |
| 3316 | return NULL; |
| 3317 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3318 | |
| 3319 | Py_INCREF(self); |
| 3320 | self->callable = (PyObject *)self; |
| 3321 | return (PyObject *)self; |
| 3322 | } |
| 3323 | |
| 3324 | #ifdef MS_WIN32 |
| 3325 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3326 | PyCFuncPtr_FromVtblIndex(PyTypeObject *type, PyObject *args, PyObject *kwds) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3327 | { |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3328 | PyCFuncPtrObject *self; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3329 | int index; |
| 3330 | char *name = NULL; |
| 3331 | PyObject *paramflags = NULL; |
| 3332 | GUID *iid = NULL; |
Thomas Heller | fffd939 | 2008-03-25 21:18:39 +0000 | [diff] [blame] | 3333 | Py_ssize_t iid_len = 0; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3334 | |
| 3335 | if (!PyArg_ParseTuple(args, "is|Oz#", &index, &name, ¶mflags, &iid, &iid_len)) |
| 3336 | return NULL; |
| 3337 | if (paramflags == Py_None) |
| 3338 | paramflags = NULL; |
| 3339 | |
| 3340 | if (!_validate_paramflags(type, paramflags)) |
| 3341 | return NULL; |
| 3342 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3343 | self = (PyCFuncPtrObject *)GenericPyCData_new(type, args, kwds); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3344 | self->index = index + 0x1000; |
| 3345 | Py_XINCREF(paramflags); |
| 3346 | self->paramflags = paramflags; |
| 3347 | if (iid_len == sizeof(GUID)) |
| 3348 | self->iid = iid; |
| 3349 | return (PyObject *)self; |
| 3350 | } |
| 3351 | #endif |
| 3352 | |
| 3353 | /* |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3354 | PyCFuncPtr_new accepts different argument lists in addition to the standard |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3355 | _basespec_ keyword arg: |
| 3356 | |
| 3357 | one argument form |
| 3358 | "i" - function address |
| 3359 | "O" - must be a callable, creates a C callable function |
| 3360 | |
| 3361 | two or more argument forms (the third argument is a paramflags tuple) |
Thomas Heller | b03cb60 | 2006-03-17 15:52:58 +0000 | [diff] [blame] | 3362 | "(sO)|..." - (function name, dll object (with an integer handle)), paramflags |
| 3363 | "(iO)|..." - (function ordinal, dll object (with an integer handle)), paramflags |
| 3364 | "is|..." - vtable index, method name, creates callable calling COM vtbl |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3365 | */ |
| 3366 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3367 | PyCFuncPtr_new(PyTypeObject *type, PyObject *args, PyObject *kwds) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3368 | { |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3369 | PyCFuncPtrObject *self; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3370 | PyObject *callable; |
| 3371 | StgDictObject *dict; |
Thomas Heller | bf027c4 | 2008-04-24 18:14:19 +0000 | [diff] [blame] | 3372 | CThunkObject *thunk; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3373 | |
| 3374 | if (PyTuple_GET_SIZE(args) == 0) |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3375 | return GenericPyCData_new(type, args, kwds); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3376 | |
Thomas Heller | b03cb60 | 2006-03-17 15:52:58 +0000 | [diff] [blame] | 3377 | if (1 <= PyTuple_GET_SIZE(args) && PyTuple_Check(PyTuple_GET_ITEM(args, 0))) |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3378 | return PyCFuncPtr_FromDll(type, args, kwds); |
Thomas Heller | b03cb60 | 2006-03-17 15:52:58 +0000 | [diff] [blame] | 3379 | |
| 3380 | #ifdef MS_WIN32 |
| 3381 | if (2 <= PyTuple_GET_SIZE(args) && PyInt_Check(PyTuple_GET_ITEM(args, 0))) |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3382 | return PyCFuncPtr_FromVtblIndex(type, args, kwds); |
Thomas Heller | b03cb60 | 2006-03-17 15:52:58 +0000 | [diff] [blame] | 3383 | #endif |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3384 | |
| 3385 | if (1 == PyTuple_GET_SIZE(args) |
| 3386 | && (PyInt_Check(PyTuple_GET_ITEM(args, 0)) |
| 3387 | || PyLong_Check(PyTuple_GET_ITEM(args, 0)))) { |
| 3388 | CDataObject *ob; |
| 3389 | void *ptr = PyLong_AsVoidPtr(PyTuple_GET_ITEM(args, 0)); |
Thomas Heller | 43617bc | 2008-01-11 20:29:19 +0000 | [diff] [blame] | 3390 | if (ptr == NULL && PyErr_Occurred()) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3391 | return NULL; |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3392 | ob = (CDataObject *)GenericPyCData_new(type, args, kwds); |
Thomas Heller | dca703f | 2006-08-14 07:50:14 +0000 | [diff] [blame] | 3393 | if (ob == NULL) |
| 3394 | return NULL; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3395 | *(void **)ob->b_ptr = ptr; |
| 3396 | return (PyObject *)ob; |
| 3397 | } |
| 3398 | |
| 3399 | if (!PyArg_ParseTuple(args, "O", &callable)) |
| 3400 | return NULL; |
| 3401 | if (!PyCallable_Check(callable)) { |
| 3402 | PyErr_SetString(PyExc_TypeError, |
| 3403 | "argument must be callable or integer function address"); |
| 3404 | return NULL; |
| 3405 | } |
| 3406 | |
| 3407 | /* XXX XXX This would allow to pass additional options. For COM |
| 3408 | method *implementations*, we would probably want different |
| 3409 | behaviour than in 'normal' callback functions: return a HRESULT if |
| 3410 | an exception occurrs in the callback, and print the traceback not |
| 3411 | only on the console, but also to OutputDebugString() or something |
| 3412 | like that. |
| 3413 | */ |
| 3414 | /* |
| 3415 | if (kwds && PyDict_GetItemString(kwds, "options")) { |
| 3416 | ... |
| 3417 | } |
| 3418 | */ |
| 3419 | |
| 3420 | dict = PyType_stgdict((PyObject *)type); |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3421 | /* XXXX Fails if we do: 'PyCFuncPtr(lambda x: x)' */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3422 | if (!dict || !dict->argtypes) { |
| 3423 | PyErr_SetString(PyExc_TypeError, |
| 3424 | "cannot construct instance of this class:" |
| 3425 | " no argtypes"); |
| 3426 | return NULL; |
| 3427 | } |
| 3428 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3429 | thunk = _ctypes_alloc_callback(callable, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3430 | dict->argtypes, |
| 3431 | dict->restype, |
Thomas Heller | fbb9c0b | 2008-06-06 08:33:46 +0000 | [diff] [blame] | 3432 | dict->flags); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3433 | if (!thunk) |
| 3434 | return NULL; |
| 3435 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3436 | self = (PyCFuncPtrObject *)GenericPyCData_new(type, args, kwds); |
Thomas Heller | bf027c4 | 2008-04-24 18:14:19 +0000 | [diff] [blame] | 3437 | if (self == NULL) { |
| 3438 | Py_DECREF(thunk); |
Thomas Heller | dca703f | 2006-08-14 07:50:14 +0000 | [diff] [blame] | 3439 | return NULL; |
Thomas Heller | bf027c4 | 2008-04-24 18:14:19 +0000 | [diff] [blame] | 3440 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3441 | |
| 3442 | Py_INCREF(callable); |
| 3443 | self->callable = callable; |
| 3444 | |
| 3445 | self->thunk = thunk; |
Thomas Heller | bf027c4 | 2008-04-24 18:14:19 +0000 | [diff] [blame] | 3446 | *(void **)self->b_ptr = (void *)thunk->pcl; |
| 3447 | |
| 3448 | Py_INCREF((PyObject *)thunk); /* for KeepRef */ |
| 3449 | if (-1 == KeepRef((CDataObject *)self, 0, (PyObject *)thunk)) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3450 | Py_DECREF((PyObject *)self); |
| 3451 | return NULL; |
| 3452 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3453 | return (PyObject *)self; |
| 3454 | } |
| 3455 | |
| 3456 | |
| 3457 | /* |
| 3458 | _byref consumes a refcount to its argument |
| 3459 | */ |
| 3460 | static PyObject * |
| 3461 | _byref(PyObject *obj) |
| 3462 | { |
| 3463 | PyCArgObject *parg; |
| 3464 | if (!CDataObject_Check(obj)) { |
| 3465 | PyErr_SetString(PyExc_TypeError, |
| 3466 | "expected CData instance"); |
| 3467 | return NULL; |
| 3468 | } |
| 3469 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3470 | parg = PyCArgObject_new(); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3471 | if (parg == NULL) { |
| 3472 | Py_DECREF(obj); |
| 3473 | return NULL; |
| 3474 | } |
| 3475 | |
| 3476 | parg->tag = 'P'; |
| 3477 | parg->pffi_type = &ffi_type_pointer; |
| 3478 | parg->obj = obj; |
| 3479 | parg->value.p = ((CDataObject *)obj)->b_ptr; |
| 3480 | return (PyObject *)parg; |
| 3481 | } |
| 3482 | |
| 3483 | static PyObject * |
| 3484 | _get_arg(int *pindex, char *name, PyObject *defval, PyObject *inargs, PyObject *kwds) |
| 3485 | { |
| 3486 | PyObject *v; |
| 3487 | |
| 3488 | if (*pindex < PyTuple_GET_SIZE(inargs)) { |
| 3489 | v = PyTuple_GET_ITEM(inargs, *pindex); |
| 3490 | ++*pindex; |
| 3491 | Py_INCREF(v); |
| 3492 | return v; |
| 3493 | } |
| 3494 | if (kwds && (v = PyDict_GetItemString(kwds, name))) { |
| 3495 | ++*pindex; |
| 3496 | Py_INCREF(v); |
| 3497 | return v; |
| 3498 | } |
| 3499 | if (defval) { |
| 3500 | Py_INCREF(defval); |
| 3501 | return defval; |
| 3502 | } |
| 3503 | /* we can't currently emit a better error message */ |
| 3504 | if (name) |
| 3505 | PyErr_Format(PyExc_TypeError, |
| 3506 | "required argument '%s' missing", name); |
| 3507 | else |
| 3508 | PyErr_Format(PyExc_TypeError, |
| 3509 | "not enough arguments"); |
| 3510 | return NULL; |
| 3511 | } |
| 3512 | |
| 3513 | /* |
| 3514 | This function implements higher level functionality plus the ability to call |
| 3515 | functions with keyword arguments by looking at parameter flags. parameter |
| 3516 | flags is a tuple of 1, 2 or 3-tuples. The first entry in each is an integer |
| 3517 | specifying the direction of the data transfer for this parameter - 'in', |
| 3518 | 'out' or 'inout' (zero means the same as 'in'). The second entry is the |
| 3519 | parameter name, and the third is the default value if the parameter is |
| 3520 | missing in the function call. |
| 3521 | |
| 3522 | This function builds and returns a new tuple 'callargs' which contains the |
| 3523 | parameters to use in the call. Items on this tuple are copied from the |
| 3524 | 'inargs' tuple for 'in' and 'in, out' parameters, and constructed from the |
| 3525 | 'argtypes' tuple for 'out' parameters. It also calculates numretvals which |
| 3526 | is the number of return values for the function, outmask/inoutmask are |
| 3527 | bitmasks containing indexes into the callargs tuple specifying which |
| 3528 | parameters have to be returned. _build_result builds the return value of the |
| 3529 | function. |
| 3530 | */ |
| 3531 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3532 | _build_callargs(PyCFuncPtrObject *self, PyObject *argtypes, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3533 | PyObject *inargs, PyObject *kwds, |
Thomas Heller | 4c9dfc8 | 2006-03-16 19:26:21 +0000 | [diff] [blame] | 3534 | int *poutmask, int *pinoutmask, unsigned int *pnumretvals) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3535 | { |
| 3536 | PyObject *paramflags = self->paramflags; |
| 3537 | PyObject *callargs; |
| 3538 | StgDictObject *dict; |
Thomas Heller | e81c9f6 | 2007-06-08 18:20:09 +0000 | [diff] [blame] | 3539 | Py_ssize_t i, len; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3540 | int inargs_index = 0; |
| 3541 | /* It's a little bit difficult to determine how many arguments the |
| 3542 | function call requires/accepts. For simplicity, we count the consumed |
| 3543 | args and compare this to the number of supplied args. */ |
Thomas Heller | e81c9f6 | 2007-06-08 18:20:09 +0000 | [diff] [blame] | 3544 | Py_ssize_t actual_args; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3545 | |
| 3546 | *poutmask = 0; |
| 3547 | *pinoutmask = 0; |
| 3548 | *pnumretvals = 0; |
| 3549 | |
| 3550 | /* Trivial cases, where we either return inargs itself, or a slice of it. */ |
| 3551 | if (argtypes == NULL || paramflags == NULL || PyTuple_GET_SIZE(argtypes) == 0) { |
| 3552 | #ifdef MS_WIN32 |
| 3553 | if (self->index) |
| 3554 | return PyTuple_GetSlice(inargs, 1, PyTuple_GET_SIZE(inargs)); |
| 3555 | #endif |
| 3556 | Py_INCREF(inargs); |
| 3557 | return inargs; |
| 3558 | } |
| 3559 | |
| 3560 | len = PyTuple_GET_SIZE(argtypes); |
| 3561 | callargs = PyTuple_New(len); /* the argument tuple we build */ |
| 3562 | if (callargs == NULL) |
| 3563 | return NULL; |
| 3564 | |
| 3565 | #ifdef MS_WIN32 |
| 3566 | /* For a COM method, skip the first arg */ |
| 3567 | if (self->index) { |
| 3568 | inargs_index = 1; |
| 3569 | } |
| 3570 | #endif |
| 3571 | for (i = 0; i < len; ++i) { |
| 3572 | PyObject *item = PyTuple_GET_ITEM(paramflags, i); |
| 3573 | PyObject *ob; |
| 3574 | int flag; |
| 3575 | char *name = NULL; |
| 3576 | PyObject *defval = NULL; |
| 3577 | |
| 3578 | /* This way seems to be ~2 us faster than the PyArg_ParseTuple |
| 3579 | calls below. */ |
| 3580 | /* We HAVE already checked that the tuple can be parsed with "i|zO", so... */ |
Thomas Heller | e81c9f6 | 2007-06-08 18:20:09 +0000 | [diff] [blame] | 3581 | Py_ssize_t tsize = PyTuple_GET_SIZE(item); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3582 | flag = PyInt_AS_LONG(PyTuple_GET_ITEM(item, 0)); |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 3583 | name = tsize > 1 ? PyString_AS_STRING(PyTuple_GET_ITEM(item, 1)) : NULL; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3584 | defval = tsize > 2 ? PyTuple_GET_ITEM(item, 2) : NULL; |
| 3585 | |
| 3586 | switch (flag & (PARAMFLAG_FIN | PARAMFLAG_FOUT | PARAMFLAG_FLCID)) { |
| 3587 | case PARAMFLAG_FIN | PARAMFLAG_FLCID: |
Thomas Heller | aa47570 | 2006-03-16 19:56:24 +0000 | [diff] [blame] | 3588 | /* ['in', 'lcid'] parameter. Always taken from defval, |
| 3589 | if given, else the integer 0. */ |
| 3590 | if (defval == NULL) { |
| 3591 | defval = PyInt_FromLong(0); |
| 3592 | if (defval == NULL) |
| 3593 | goto error; |
| 3594 | } else |
| 3595 | Py_INCREF(defval); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3596 | PyTuple_SET_ITEM(callargs, i, defval); |
| 3597 | break; |
| 3598 | case (PARAMFLAG_FIN | PARAMFLAG_FOUT): |
| 3599 | *pinoutmask |= (1 << i); /* mark as inout arg */ |
| 3600 | (*pnumretvals)++; |
| 3601 | /* fall through to PARAMFLAG_FIN... */ |
| 3602 | case 0: |
| 3603 | case PARAMFLAG_FIN: |
| 3604 | /* 'in' parameter. Copy it from inargs. */ |
| 3605 | ob =_get_arg(&inargs_index, name, defval, inargs, kwds); |
| 3606 | if (ob == NULL) |
| 3607 | goto error; |
| 3608 | PyTuple_SET_ITEM(callargs, i, ob); |
| 3609 | break; |
| 3610 | case PARAMFLAG_FOUT: |
| 3611 | /* XXX Refactor this code into a separate function. */ |
| 3612 | /* 'out' parameter. |
| 3613 | argtypes[i] must be a POINTER to a c type. |
| 3614 | |
| 3615 | Cannot by supplied in inargs, but a defval will be used |
| 3616 | if available. XXX Should we support getting it from kwds? |
| 3617 | */ |
| 3618 | if (defval) { |
| 3619 | /* XXX Using mutable objects as defval will |
| 3620 | make the function non-threadsafe, unless we |
| 3621 | copy the object in each invocation */ |
| 3622 | Py_INCREF(defval); |
| 3623 | PyTuple_SET_ITEM(callargs, i, defval); |
| 3624 | *poutmask |= (1 << i); /* mark as out arg */ |
| 3625 | (*pnumretvals)++; |
| 3626 | break; |
| 3627 | } |
| 3628 | ob = PyTuple_GET_ITEM(argtypes, i); |
| 3629 | dict = PyType_stgdict(ob); |
Thomas Heller | 0b21b43 | 2006-08-18 14:38:46 +0000 | [diff] [blame] | 3630 | if (dict == NULL) { |
| 3631 | /* Cannot happen: _validate_paramflags() |
| 3632 | would not accept such an object */ |
| 3633 | PyErr_Format(PyExc_RuntimeError, |
| 3634 | "NULL stgdict unexpected"); |
| 3635 | goto error; |
| 3636 | } |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 3637 | if (PyString_Check(dict->proto)) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3638 | PyErr_Format( |
| 3639 | PyExc_TypeError, |
| 3640 | "%s 'out' parameter must be passed as default value", |
| 3641 | ((PyTypeObject *)ob)->tp_name); |
| 3642 | goto error; |
| 3643 | } |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3644 | if (PyCArrayTypeObject_Check(ob)) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3645 | ob = PyObject_CallObject(ob, NULL); |
| 3646 | else |
| 3647 | /* Create an instance of the pointed-to type */ |
| 3648 | ob = PyObject_CallObject(dict->proto, NULL); |
| 3649 | /* |
| 3650 | XXX Is the following correct any longer? |
| 3651 | We must not pass a byref() to the array then but |
| 3652 | the array instance itself. Then, we cannot retrive |
| 3653 | the result from the PyCArgObject. |
| 3654 | */ |
| 3655 | if (ob == NULL) |
| 3656 | goto error; |
| 3657 | /* The .from_param call that will ocurr later will pass this |
| 3658 | as a byref parameter. */ |
| 3659 | PyTuple_SET_ITEM(callargs, i, ob); |
| 3660 | *poutmask |= (1 << i); /* mark as out arg */ |
| 3661 | (*pnumretvals)++; |
| 3662 | break; |
| 3663 | default: |
| 3664 | PyErr_Format(PyExc_ValueError, |
| 3665 | "paramflag %d not yet implemented", flag); |
| 3666 | goto error; |
| 3667 | break; |
| 3668 | } |
| 3669 | } |
| 3670 | |
| 3671 | /* We have counted the arguments we have consumed in 'inargs_index'. This |
| 3672 | must be the same as len(inargs) + len(kwds), otherwise we have |
| 3673 | either too much or not enough arguments. */ |
| 3674 | |
| 3675 | actual_args = PyTuple_GET_SIZE(inargs) + (kwds ? PyDict_Size(kwds) : 0); |
| 3676 | if (actual_args != inargs_index) { |
| 3677 | /* When we have default values or named parameters, this error |
| 3678 | message is misleading. See unittests/test_paramflags.py |
| 3679 | */ |
| 3680 | PyErr_Format(PyExc_TypeError, |
Thomas Heller | 6088f24 | 2007-06-08 19:01:06 +0000 | [diff] [blame] | 3681 | #if (PY_VERSION_HEX < 0x02050000) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3682 | "call takes exactly %d arguments (%d given)", |
Thomas Heller | 6088f24 | 2007-06-08 19:01:06 +0000 | [diff] [blame] | 3683 | #else |
| 3684 | "call takes exactly %d arguments (%zd given)", |
| 3685 | #endif |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3686 | inargs_index, actual_args); |
| 3687 | goto error; |
| 3688 | } |
| 3689 | |
| 3690 | /* outmask is a bitmask containing indexes into callargs. Items at |
| 3691 | these indexes contain values to return. |
| 3692 | */ |
| 3693 | return callargs; |
| 3694 | error: |
| 3695 | Py_DECREF(callargs); |
| 3696 | return NULL; |
| 3697 | } |
| 3698 | |
| 3699 | /* See also: |
| 3700 | http://msdn.microsoft.com/library/en-us/com/html/769127a1-1a14-4ed4-9d38-7cf3e571b661.asp |
| 3701 | */ |
| 3702 | /* |
| 3703 | Build return value of a function. |
| 3704 | |
| 3705 | Consumes the refcount on result and callargs. |
| 3706 | */ |
| 3707 | static PyObject * |
| 3708 | _build_result(PyObject *result, PyObject *callargs, |
Thomas Heller | 4c9dfc8 | 2006-03-16 19:26:21 +0000 | [diff] [blame] | 3709 | int outmask, int inoutmask, unsigned int numretvals) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3710 | { |
Thomas Heller | 4c9dfc8 | 2006-03-16 19:26:21 +0000 | [diff] [blame] | 3711 | unsigned int i, index; |
| 3712 | int bit; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3713 | PyObject *tup = NULL; |
| 3714 | |
| 3715 | if (callargs == NULL) |
| 3716 | return result; |
| 3717 | if (result == NULL || numretvals == 0) { |
| 3718 | Py_DECREF(callargs); |
| 3719 | return result; |
| 3720 | } |
| 3721 | Py_DECREF(result); |
| 3722 | |
Thomas Heller | 4c9dfc8 | 2006-03-16 19:26:21 +0000 | [diff] [blame] | 3723 | /* tup will not be allocated if numretvals == 1 */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3724 | /* allocate tuple to hold the result */ |
| 3725 | if (numretvals > 1) { |
| 3726 | tup = PyTuple_New(numretvals); |
| 3727 | if (tup == NULL) { |
| 3728 | Py_DECREF(callargs); |
| 3729 | return NULL; |
| 3730 | } |
| 3731 | } |
| 3732 | |
| 3733 | index = 0; |
| 3734 | for (bit = 1, i = 0; i < 32; ++i, bit <<= 1) { |
| 3735 | PyObject *v; |
| 3736 | if (bit & inoutmask) { |
| 3737 | v = PyTuple_GET_ITEM(callargs, i); |
| 3738 | Py_INCREF(v); |
| 3739 | if (numretvals == 1) { |
| 3740 | Py_DECREF(callargs); |
| 3741 | return v; |
| 3742 | } |
| 3743 | PyTuple_SET_ITEM(tup, index, v); |
| 3744 | index++; |
| 3745 | } else if (bit & outmask) { |
| 3746 | v = PyTuple_GET_ITEM(callargs, i); |
| 3747 | v = PyObject_CallMethod(v, "__ctypes_from_outparam__", NULL); |
| 3748 | if (v == NULL || numretvals == 1) { |
| 3749 | Py_DECREF(callargs); |
| 3750 | return v; |
| 3751 | } |
| 3752 | PyTuple_SET_ITEM(tup, index, v); |
| 3753 | index++; |
| 3754 | } |
| 3755 | if (index == numretvals) |
| 3756 | break; |
| 3757 | } |
| 3758 | |
| 3759 | Py_DECREF(callargs); |
| 3760 | return tup; |
| 3761 | } |
| 3762 | |
| 3763 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3764 | PyCFuncPtr_call(PyCFuncPtrObject *self, PyObject *inargs, PyObject *kwds) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3765 | { |
| 3766 | PyObject *restype; |
| 3767 | PyObject *converters; |
| 3768 | PyObject *checker; |
| 3769 | PyObject *argtypes; |
| 3770 | StgDictObject *dict = PyObject_stgdict((PyObject *)self); |
| 3771 | PyObject *result; |
| 3772 | PyObject *callargs; |
| 3773 | PyObject *errcheck; |
| 3774 | #ifdef MS_WIN32 |
| 3775 | IUnknown *piunk = NULL; |
| 3776 | #endif |
| 3777 | void *pProc = NULL; |
| 3778 | |
| 3779 | int inoutmask; |
| 3780 | int outmask; |
Thomas Heller | b216761 | 2006-03-16 19:34:56 +0000 | [diff] [blame] | 3781 | unsigned int numretvals; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3782 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3783 | assert(dict); /* Cannot be NULL for PyCFuncPtrObject instances */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3784 | restype = self->restype ? self->restype : dict->restype; |
| 3785 | converters = self->converters ? self->converters : dict->converters; |
| 3786 | checker = self->checker ? self->checker : dict->checker; |
| 3787 | argtypes = self->argtypes ? self->argtypes : dict->argtypes; |
| 3788 | /* later, we probably want to have an errcheck field in stgdict */ |
| 3789 | errcheck = self->errcheck /* ? self->errcheck : dict->errcheck */; |
| 3790 | |
| 3791 | |
| 3792 | pProc = *(void **)self->b_ptr; |
| 3793 | #ifdef MS_WIN32 |
| 3794 | if (self->index) { |
| 3795 | /* It's a COM method */ |
| 3796 | CDataObject *this; |
| 3797 | this = (CDataObject *)PyTuple_GetItem(inargs, 0); /* borrowed ref! */ |
| 3798 | if (!this) { |
| 3799 | PyErr_SetString(PyExc_ValueError, |
| 3800 | "native com method call without 'this' parameter"); |
| 3801 | return NULL; |
| 3802 | } |
| 3803 | if (!CDataObject_Check(this)) { |
| 3804 | PyErr_SetString(PyExc_TypeError, |
| 3805 | "Expected a COM this pointer as first argument"); |
| 3806 | return NULL; |
| 3807 | } |
| 3808 | /* there should be more checks? No, in Python */ |
| 3809 | /* First arg is an pointer to an interface instance */ |
| 3810 | if (!this->b_ptr || *(void **)this->b_ptr == NULL) { |
| 3811 | PyErr_SetString(PyExc_ValueError, |
| 3812 | "NULL COM pointer access"); |
| 3813 | return NULL; |
| 3814 | } |
| 3815 | piunk = *(IUnknown **)this->b_ptr; |
| 3816 | if (NULL == piunk->lpVtbl) { |
| 3817 | PyErr_SetString(PyExc_ValueError, |
| 3818 | "COM method call without VTable"); |
| 3819 | return NULL; |
| 3820 | } |
| 3821 | pProc = ((void **)piunk->lpVtbl)[self->index - 0x1000]; |
| 3822 | } |
| 3823 | #endif |
| 3824 | callargs = _build_callargs(self, argtypes, |
| 3825 | inargs, kwds, |
| 3826 | &outmask, &inoutmask, &numretvals); |
| 3827 | if (callargs == NULL) |
| 3828 | return NULL; |
| 3829 | |
| 3830 | if (converters) { |
Thomas Heller | e81c9f6 | 2007-06-08 18:20:09 +0000 | [diff] [blame] | 3831 | int required = Py_SAFE_DOWNCAST(PyTuple_GET_SIZE(converters), |
| 3832 | Py_ssize_t, int); |
| 3833 | int actual = Py_SAFE_DOWNCAST(PyTuple_GET_SIZE(callargs), |
| 3834 | Py_ssize_t, int); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3835 | |
| 3836 | if ((dict->flags & FUNCFLAG_CDECL) == FUNCFLAG_CDECL) { |
| 3837 | /* For cdecl functions, we allow more actual arguments |
| 3838 | than the length of the argtypes tuple. |
| 3839 | */ |
| 3840 | if (required > actual) { |
| 3841 | Py_DECREF(callargs); |
| 3842 | PyErr_Format(PyExc_TypeError, |
| 3843 | "this function takes at least %d argument%s (%d given)", |
| 3844 | required, |
| 3845 | required == 1 ? "" : "s", |
| 3846 | actual); |
| 3847 | return NULL; |
| 3848 | } |
| 3849 | } else if (required != actual) { |
| 3850 | Py_DECREF(callargs); |
| 3851 | PyErr_Format(PyExc_TypeError, |
| 3852 | "this function takes %d argument%s (%d given)", |
| 3853 | required, |
| 3854 | required == 1 ? "" : "s", |
| 3855 | actual); |
| 3856 | return NULL; |
| 3857 | } |
| 3858 | } |
| 3859 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3860 | result = _ctypes_callproc(pProc, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3861 | callargs, |
| 3862 | #ifdef MS_WIN32 |
| 3863 | piunk, |
| 3864 | self->iid, |
| 3865 | #endif |
| 3866 | dict->flags, |
| 3867 | converters, |
| 3868 | restype, |
| 3869 | checker); |
| 3870 | /* The 'errcheck' protocol */ |
| 3871 | if (result != NULL && errcheck) { |
| 3872 | PyObject *v = PyObject_CallFunctionObjArgs(errcheck, |
| 3873 | result, |
| 3874 | self, |
| 3875 | callargs, |
| 3876 | NULL); |
| 3877 | /* If the errcheck funtion failed, return NULL. |
| 3878 | If the errcheck function returned callargs unchanged, |
| 3879 | continue normal processing. |
| 3880 | If the errcheck function returned something else, |
| 3881 | use that as result. |
| 3882 | */ |
| 3883 | if (v == NULL || v != callargs) { |
| 3884 | Py_DECREF(result); |
| 3885 | Py_DECREF(callargs); |
| 3886 | return v; |
| 3887 | } |
| 3888 | Py_DECREF(v); |
| 3889 | } |
| 3890 | |
| 3891 | return _build_result(result, callargs, |
| 3892 | outmask, inoutmask, numretvals); |
| 3893 | } |
| 3894 | |
| 3895 | static int |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3896 | PyCFuncPtr_traverse(PyCFuncPtrObject *self, visitproc visit, void *arg) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3897 | { |
| 3898 | Py_VISIT(self->callable); |
| 3899 | Py_VISIT(self->restype); |
| 3900 | Py_VISIT(self->checker); |
| 3901 | Py_VISIT(self->errcheck); |
| 3902 | Py_VISIT(self->argtypes); |
| 3903 | Py_VISIT(self->converters); |
| 3904 | Py_VISIT(self->paramflags); |
Thomas Heller | bf027c4 | 2008-04-24 18:14:19 +0000 | [diff] [blame] | 3905 | Py_VISIT(self->thunk); |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3906 | return PyCData_traverse((CDataObject *)self, visit, arg); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3907 | } |
| 3908 | |
| 3909 | static int |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3910 | PyCFuncPtr_clear(PyCFuncPtrObject *self) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3911 | { |
| 3912 | Py_CLEAR(self->callable); |
| 3913 | Py_CLEAR(self->restype); |
| 3914 | Py_CLEAR(self->checker); |
| 3915 | Py_CLEAR(self->errcheck); |
| 3916 | Py_CLEAR(self->argtypes); |
| 3917 | Py_CLEAR(self->converters); |
| 3918 | Py_CLEAR(self->paramflags); |
Thomas Heller | bf027c4 | 2008-04-24 18:14:19 +0000 | [diff] [blame] | 3919 | Py_CLEAR(self->thunk); |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3920 | return PyCData_clear((CDataObject *)self); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3921 | } |
| 3922 | |
| 3923 | static void |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3924 | PyCFuncPtr_dealloc(PyCFuncPtrObject *self) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3925 | { |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3926 | PyCFuncPtr_clear(self); |
Christian Heimes | e93237d | 2007-12-19 02:37:44 +0000 | [diff] [blame] | 3927 | Py_TYPE(self)->tp_free((PyObject *)self); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3928 | } |
| 3929 | |
| 3930 | static PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3931 | PyCFuncPtr_repr(PyCFuncPtrObject *self) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3932 | { |
| 3933 | #ifdef MS_WIN32 |
| 3934 | if (self->index) |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 3935 | return PyString_FromFormat("<COM method offset %d: %s at %p>", |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3936 | self->index - 0x1000, |
Christian Heimes | e93237d | 2007-12-19 02:37:44 +0000 | [diff] [blame] | 3937 | Py_TYPE(self)->tp_name, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3938 | self); |
| 3939 | #endif |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 3940 | return PyString_FromFormat("<%s object at %p>", |
Christian Heimes | e93237d | 2007-12-19 02:37:44 +0000 | [diff] [blame] | 3941 | Py_TYPE(self)->tp_name, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3942 | self); |
| 3943 | } |
| 3944 | |
Thomas Heller | 9287acf | 2008-05-29 19:42:34 +0000 | [diff] [blame] | 3945 | static int |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3946 | PyCFuncPtr_nonzero(PyCFuncPtrObject *self) |
Thomas Heller | 9287acf | 2008-05-29 19:42:34 +0000 | [diff] [blame] | 3947 | { |
Thomas Heller | 0ad5ae0 | 2008-08-19 19:25:04 +0000 | [diff] [blame] | 3948 | return ((*(void **)self->b_ptr != NULL) |
Thomas Heller | d9ccf8c | 2008-08-19 19:40:23 +0000 | [diff] [blame] | 3949 | #ifdef MS_WIN32 |
| 3950 | || (self->index != 0) |
| 3951 | #endif |
| 3952 | ); |
Thomas Heller | 9287acf | 2008-05-29 19:42:34 +0000 | [diff] [blame] | 3953 | } |
| 3954 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3955 | static PyNumberMethods PyCFuncPtr_as_number = { |
Thomas Heller | 9287acf | 2008-05-29 19:42:34 +0000 | [diff] [blame] | 3956 | 0, /* nb_add */ |
| 3957 | 0, /* nb_subtract */ |
| 3958 | 0, /* nb_multiply */ |
| 3959 | 0, /* nb_divide */ |
| 3960 | 0, /* nb_remainder */ |
| 3961 | 0, /* nb_divmod */ |
| 3962 | 0, /* nb_power */ |
| 3963 | 0, /* nb_negative */ |
| 3964 | 0, /* nb_positive */ |
| 3965 | 0, /* nb_absolute */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3966 | (inquiry)PyCFuncPtr_nonzero, /* nb_nonzero */ |
Thomas Heller | 9287acf | 2008-05-29 19:42:34 +0000 | [diff] [blame] | 3967 | }; |
| 3968 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3969 | PyTypeObject PyCFuncPtr_Type = { |
Martin v. Löwis | 6819210 | 2007-07-21 06:55:02 +0000 | [diff] [blame] | 3970 | PyVarObject_HEAD_INIT(NULL, 0) |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3971 | "_ctypes.PyCFuncPtr", |
| 3972 | sizeof(PyCFuncPtrObject), /* tp_basicsize */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3973 | 0, /* tp_itemsize */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3974 | (destructor)PyCFuncPtr_dealloc, /* tp_dealloc */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3975 | 0, /* tp_print */ |
| 3976 | 0, /* tp_getattr */ |
| 3977 | 0, /* tp_setattr */ |
| 3978 | 0, /* tp_compare */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3979 | (reprfunc)PyCFuncPtr_repr, /* tp_repr */ |
| 3980 | &PyCFuncPtr_as_number, /* tp_as_number */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3981 | 0, /* tp_as_sequence */ |
| 3982 | 0, /* tp_as_mapping */ |
| 3983 | 0, /* tp_hash */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3984 | (ternaryfunc)PyCFuncPtr_call, /* tp_call */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3985 | 0, /* tp_str */ |
| 3986 | 0, /* tp_getattro */ |
| 3987 | 0, /* tp_setattro */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3988 | &PyCData_as_buffer, /* tp_as_buffer */ |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 3989 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_NEWBUFFER | Py_TPFLAGS_BASETYPE, /* tp_flags */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3990 | "Function Pointer", /* tp_doc */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3991 | (traverseproc)PyCFuncPtr_traverse, /* tp_traverse */ |
| 3992 | (inquiry)PyCFuncPtr_clear, /* tp_clear */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 3993 | 0, /* tp_richcompare */ |
| 3994 | 0, /* tp_weaklistoffset */ |
| 3995 | 0, /* tp_iter */ |
| 3996 | 0, /* tp_iternext */ |
| 3997 | 0, /* tp_methods */ |
| 3998 | 0, /* tp_members */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 3999 | PyCFuncPtr_getsets, /* tp_getset */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4000 | 0, /* tp_base */ |
| 4001 | 0, /* tp_dict */ |
| 4002 | 0, /* tp_descr_get */ |
| 4003 | 0, /* tp_descr_set */ |
| 4004 | 0, /* tp_dictoffset */ |
| 4005 | 0, /* tp_init */ |
| 4006 | 0, /* tp_alloc */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4007 | PyCFuncPtr_new, /* tp_new */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4008 | 0, /* tp_free */ |
| 4009 | }; |
| 4010 | |
| 4011 | /*****************************************************************/ |
| 4012 | /* |
| 4013 | Struct_Type |
| 4014 | */ |
Thomas Heller | 7a352c0 | 2009-09-18 18:55:17 +0000 | [diff] [blame] | 4015 | /* |
| 4016 | This function is called to initialize a Structure or Union with positional |
| 4017 | arguments. It calls itself recursively for all Structure or Union base |
| 4018 | classes, then retrieves the _fields_ member to associate the argument |
| 4019 | position with the correct field name. |
| 4020 | |
| 4021 | Returns -1 on error, or the index of next argument on success. |
| 4022 | */ |
| 4023 | static int |
| 4024 | _init_pos_args(PyObject *self, PyTypeObject *type, |
| 4025 | PyObject *args, PyObject *kwds, |
| 4026 | int index) |
| 4027 | { |
| 4028 | StgDictObject *dict; |
| 4029 | PyObject *fields; |
| 4030 | int i; |
| 4031 | |
| 4032 | if (PyType_stgdict((PyObject *)type->tp_base)) { |
| 4033 | index = _init_pos_args(self, type->tp_base, |
| 4034 | args, kwds, |
| 4035 | index); |
| 4036 | if (index == -1) |
| 4037 | return -1; |
| 4038 | } |
| 4039 | |
| 4040 | dict = PyType_stgdict((PyObject *)type); |
| 4041 | fields = PyDict_GetItemString((PyObject *)dict, "_fields_"); |
| 4042 | if (fields == NULL) |
| 4043 | return index; |
| 4044 | |
| 4045 | for (i = 0; |
| 4046 | i < dict->length && (i+index) < PyTuple_GET_SIZE(args); |
| 4047 | ++i) { |
| 4048 | PyObject *pair = PySequence_GetItem(fields, i); |
| 4049 | PyObject *name, *val; |
| 4050 | int res; |
| 4051 | if (!pair) |
| 4052 | return -1; |
| 4053 | name = PySequence_GetItem(pair, 0); |
| 4054 | if (!name) { |
| 4055 | Py_DECREF(pair); |
| 4056 | return -1; |
| 4057 | } |
| 4058 | val = PyTuple_GET_ITEM(args, i + index); |
| 4059 | if (kwds && PyDict_GetItem(kwds, name)) { |
| 4060 | char *field = PyString_AsString(name); |
| 4061 | if (field == NULL) { |
| 4062 | PyErr_Clear(); |
| 4063 | field = "???"; |
| 4064 | } |
| 4065 | PyErr_Format(PyExc_TypeError, |
| 4066 | "duplicate values for field '%s'", |
| 4067 | field); |
| 4068 | Py_DECREF(pair); |
| 4069 | Py_DECREF(name); |
| 4070 | return -1; |
| 4071 | } |
| 4072 | |
| 4073 | res = PyObject_SetAttr(self, name, val); |
| 4074 | Py_DECREF(pair); |
| 4075 | Py_DECREF(name); |
| 4076 | if (res == -1) |
| 4077 | return -1; |
| 4078 | } |
| 4079 | return index + dict->length; |
| 4080 | } |
| 4081 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4082 | static int |
| 4083 | Struct_init(PyObject *self, PyObject *args, PyObject *kwds) |
| 4084 | { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4085 | /* Optimization possible: Store the attribute names _fields_[x][0] |
| 4086 | * in C accessible fields somewhere ? |
| 4087 | */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4088 | if (!PyTuple_Check(args)) { |
| 4089 | PyErr_SetString(PyExc_TypeError, |
| 4090 | "args not a tuple?"); |
| 4091 | return -1; |
| 4092 | } |
| 4093 | if (PyTuple_GET_SIZE(args)) { |
Thomas Heller | 7a352c0 | 2009-09-18 18:55:17 +0000 | [diff] [blame] | 4094 | int res = _init_pos_args(self, Py_TYPE(self), |
| 4095 | args, kwds, 0); |
| 4096 | if (res == -1) |
| 4097 | return -1; |
| 4098 | if (res < PyTuple_GET_SIZE(args)) { |
Thomas Heller | 415c1e3 | 2008-01-16 19:45:51 +0000 | [diff] [blame] | 4099 | PyErr_SetString(PyExc_TypeError, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4100 | "too many initializers"); |
| 4101 | return -1; |
| 4102 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4103 | } |
| 4104 | |
| 4105 | if (kwds) { |
| 4106 | PyObject *key, *value; |
Thomas Heller | fe8f862 | 2006-03-14 19:53:09 +0000 | [diff] [blame] | 4107 | Py_ssize_t pos = 0; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4108 | while(PyDict_Next(kwds, &pos, &key, &value)) { |
| 4109 | if (-1 == PyObject_SetAttr(self, key, value)) |
| 4110 | return -1; |
| 4111 | } |
| 4112 | } |
| 4113 | return 0; |
| 4114 | } |
| 4115 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4116 | static PyTypeObject Struct_Type = { |
Martin v. Löwis | 6819210 | 2007-07-21 06:55:02 +0000 | [diff] [blame] | 4117 | PyVarObject_HEAD_INIT(NULL, 0) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4118 | "_ctypes.Structure", |
| 4119 | sizeof(CDataObject), /* tp_basicsize */ |
| 4120 | 0, /* tp_itemsize */ |
| 4121 | 0, /* tp_dealloc */ |
| 4122 | 0, /* tp_print */ |
| 4123 | 0, /* tp_getattr */ |
| 4124 | 0, /* tp_setattr */ |
| 4125 | 0, /* tp_compare */ |
| 4126 | 0, /* tp_repr */ |
| 4127 | 0, /* tp_as_number */ |
| 4128 | 0, /* tp_as_sequence */ |
| 4129 | 0, /* tp_as_mapping */ |
| 4130 | 0, /* tp_hash */ |
| 4131 | 0, /* tp_call */ |
| 4132 | 0, /* tp_str */ |
| 4133 | 0, /* tp_getattro */ |
| 4134 | 0, /* tp_setattro */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4135 | &PyCData_as_buffer, /* tp_as_buffer */ |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 4136 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_NEWBUFFER | Py_TPFLAGS_BASETYPE, /* tp_flags */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4137 | "Structure base class", /* tp_doc */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4138 | (traverseproc)PyCData_traverse, /* tp_traverse */ |
| 4139 | (inquiry)PyCData_clear, /* tp_clear */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4140 | 0, /* tp_richcompare */ |
| 4141 | 0, /* tp_weaklistoffset */ |
| 4142 | 0, /* tp_iter */ |
| 4143 | 0, /* tp_iternext */ |
| 4144 | 0, /* tp_methods */ |
| 4145 | 0, /* tp_members */ |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 4146 | 0, /* tp_getset */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4147 | 0, /* tp_base */ |
| 4148 | 0, /* tp_dict */ |
| 4149 | 0, /* tp_descr_get */ |
| 4150 | 0, /* tp_descr_set */ |
| 4151 | 0, /* tp_dictoffset */ |
| 4152 | Struct_init, /* tp_init */ |
| 4153 | 0, /* tp_alloc */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4154 | GenericPyCData_new, /* tp_new */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4155 | 0, /* tp_free */ |
| 4156 | }; |
| 4157 | |
| 4158 | static PyTypeObject Union_Type = { |
Martin v. Löwis | 6819210 | 2007-07-21 06:55:02 +0000 | [diff] [blame] | 4159 | PyVarObject_HEAD_INIT(NULL, 0) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4160 | "_ctypes.Union", |
| 4161 | sizeof(CDataObject), /* tp_basicsize */ |
| 4162 | 0, /* tp_itemsize */ |
| 4163 | 0, /* tp_dealloc */ |
| 4164 | 0, /* tp_print */ |
| 4165 | 0, /* tp_getattr */ |
| 4166 | 0, /* tp_setattr */ |
| 4167 | 0, /* tp_compare */ |
| 4168 | 0, /* tp_repr */ |
| 4169 | 0, /* tp_as_number */ |
| 4170 | 0, /* tp_as_sequence */ |
| 4171 | 0, /* tp_as_mapping */ |
| 4172 | 0, /* tp_hash */ |
| 4173 | 0, /* tp_call */ |
| 4174 | 0, /* tp_str */ |
| 4175 | 0, /* tp_getattro */ |
| 4176 | 0, /* tp_setattro */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4177 | &PyCData_as_buffer, /* tp_as_buffer */ |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 4178 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_NEWBUFFER | Py_TPFLAGS_BASETYPE, /* tp_flags */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4179 | "Union base class", /* tp_doc */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4180 | (traverseproc)PyCData_traverse, /* tp_traverse */ |
| 4181 | (inquiry)PyCData_clear, /* tp_clear */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4182 | 0, /* tp_richcompare */ |
| 4183 | 0, /* tp_weaklistoffset */ |
| 4184 | 0, /* tp_iter */ |
| 4185 | 0, /* tp_iternext */ |
| 4186 | 0, /* tp_methods */ |
| 4187 | 0, /* tp_members */ |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 4188 | 0, /* tp_getset */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4189 | 0, /* tp_base */ |
| 4190 | 0, /* tp_dict */ |
| 4191 | 0, /* tp_descr_get */ |
| 4192 | 0, /* tp_descr_set */ |
| 4193 | 0, /* tp_dictoffset */ |
| 4194 | Struct_init, /* tp_init */ |
| 4195 | 0, /* tp_alloc */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4196 | GenericPyCData_new, /* tp_new */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4197 | 0, /* tp_free */ |
| 4198 | }; |
| 4199 | |
| 4200 | |
| 4201 | /******************************************************************/ |
| 4202 | /* |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4203 | PyCArray_Type |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4204 | */ |
| 4205 | static int |
| 4206 | Array_init(CDataObject *self, PyObject *args, PyObject *kw) |
| 4207 | { |
Thomas Heller | e81c9f6 | 2007-06-08 18:20:09 +0000 | [diff] [blame] | 4208 | Py_ssize_t i; |
| 4209 | Py_ssize_t n; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4210 | |
| 4211 | if (!PyTuple_Check(args)) { |
| 4212 | PyErr_SetString(PyExc_TypeError, |
| 4213 | "args not a tuple?"); |
| 4214 | return -1; |
| 4215 | } |
| 4216 | n = PyTuple_GET_SIZE(args); |
| 4217 | for (i = 0; i < n; ++i) { |
| 4218 | PyObject *v; |
| 4219 | v = PyTuple_GET_ITEM(args, i); |
| 4220 | if (-1 == PySequence_SetItem((PyObject *)self, i, v)) |
| 4221 | return -1; |
| 4222 | } |
| 4223 | return 0; |
| 4224 | } |
| 4225 | |
| 4226 | static PyObject * |
Thomas Heller | bcfccca | 2006-03-22 13:21:16 +0000 | [diff] [blame] | 4227 | Array_item(PyObject *_self, Py_ssize_t index) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4228 | { |
Thomas Heller | ba29e4c | 2006-03-20 10:22:42 +0000 | [diff] [blame] | 4229 | CDataObject *self = (CDataObject *)_self; |
Thomas Heller | e81c9f6 | 2007-06-08 18:20:09 +0000 | [diff] [blame] | 4230 | Py_ssize_t offset, size; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4231 | StgDictObject *stgdict; |
| 4232 | |
Thomas Heller | ce049a0 | 2006-07-14 17:51:14 +0000 | [diff] [blame] | 4233 | |
| 4234 | if (index < 0 || index >= self->b_length) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4235 | PyErr_SetString(PyExc_IndexError, |
| 4236 | "invalid index"); |
| 4237 | return NULL; |
| 4238 | } |
| 4239 | |
| 4240 | stgdict = PyObject_stgdict((PyObject *)self); |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 4241 | assert(stgdict); /* Cannot be NULL for array instances */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4242 | /* Would it be clearer if we got the item size from |
| 4243 | stgdict->proto's stgdict? |
| 4244 | */ |
| 4245 | size = stgdict->size / stgdict->length; |
| 4246 | offset = index * size; |
| 4247 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4248 | return PyCData_get(stgdict->proto, stgdict->getfunc, (PyObject *)self, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4249 | index, size, self->b_ptr + offset); |
| 4250 | } |
| 4251 | |
| 4252 | static PyObject * |
Thomas Heller | ba29e4c | 2006-03-20 10:22:42 +0000 | [diff] [blame] | 4253 | Array_slice(PyObject *_self, Py_ssize_t ilow, Py_ssize_t ihigh) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4254 | { |
Thomas Heller | ba29e4c | 2006-03-20 10:22:42 +0000 | [diff] [blame] | 4255 | CDataObject *self = (CDataObject *)_self; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4256 | StgDictObject *stgdict, *itemdict; |
| 4257 | PyObject *proto; |
| 4258 | PyListObject *np; |
Thomas Heller | fe8f862 | 2006-03-14 19:53:09 +0000 | [diff] [blame] | 4259 | Py_ssize_t i, len; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4260 | |
| 4261 | if (ilow < 0) |
| 4262 | ilow = 0; |
Thomas Heller | ce049a0 | 2006-07-14 17:51:14 +0000 | [diff] [blame] | 4263 | else if (ilow > self->b_length) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4264 | ilow = self->b_length; |
| 4265 | if (ihigh < ilow) |
| 4266 | ihigh = ilow; |
Thomas Heller | ce049a0 | 2006-07-14 17:51:14 +0000 | [diff] [blame] | 4267 | else if (ihigh > self->b_length) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4268 | ihigh = self->b_length; |
| 4269 | len = ihigh - ilow; |
| 4270 | |
| 4271 | stgdict = PyObject_stgdict((PyObject *)self); |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 4272 | assert(stgdict); /* Cannot be NULL for array object instances */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4273 | proto = stgdict->proto; |
| 4274 | itemdict = PyType_stgdict(proto); |
Thomas Heller | 0b21b43 | 2006-08-18 14:38:46 +0000 | [diff] [blame] | 4275 | assert(itemdict); /* proto is the item type of the array, a ctypes |
| 4276 | type, so this cannot be NULL */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4277 | if (itemdict->getfunc == _ctypes_get_fielddesc("c")->getfunc) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4278 | char *ptr = (char *)self->b_ptr; |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 4279 | return PyString_FromStringAndSize(ptr + ilow, len); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4280 | #ifdef CTYPES_UNICODE |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4281 | } else if (itemdict->getfunc == _ctypes_get_fielddesc("u")->getfunc) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4282 | wchar_t *ptr = (wchar_t *)self->b_ptr; |
| 4283 | return PyUnicode_FromWideChar(ptr + ilow, len); |
| 4284 | #endif |
| 4285 | } |
| 4286 | |
| 4287 | np = (PyListObject *) PyList_New(len); |
| 4288 | if (np == NULL) |
| 4289 | return NULL; |
| 4290 | |
| 4291 | for (i = 0; i < len; i++) { |
Thomas Heller | ba29e4c | 2006-03-20 10:22:42 +0000 | [diff] [blame] | 4292 | PyObject *v = Array_item(_self, i+ilow); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4293 | PyList_SET_ITEM(np, i, v); |
| 4294 | } |
| 4295 | return (PyObject *)np; |
| 4296 | } |
| 4297 | |
Thomas Wouters | dcb3c38 | 2007-08-30 21:01:17 +0000 | [diff] [blame] | 4298 | static PyObject * |
| 4299 | Array_subscript(PyObject *_self, PyObject *item) |
| 4300 | { |
| 4301 | CDataObject *self = (CDataObject *)_self; |
| 4302 | |
| 4303 | if (PyIndex_Check(item)) { |
| 4304 | Py_ssize_t i = PyNumber_AsSsize_t(item, PyExc_IndexError); |
| 4305 | |
| 4306 | if (i == -1 && PyErr_Occurred()) |
| 4307 | return NULL; |
| 4308 | if (i < 0) |
| 4309 | i += self->b_length; |
| 4310 | return Array_item(_self, i); |
| 4311 | } |
| 4312 | else if PySlice_Check(item) { |
| 4313 | StgDictObject *stgdict, *itemdict; |
| 4314 | PyObject *proto; |
| 4315 | PyObject *np; |
| 4316 | Py_ssize_t start, stop, step, slicelen, cur, i; |
| 4317 | |
| 4318 | if (PySlice_GetIndicesEx((PySliceObject *)item, |
| 4319 | self->b_length, &start, &stop, |
| 4320 | &step, &slicelen) < 0) { |
| 4321 | return NULL; |
| 4322 | } |
| 4323 | |
| 4324 | stgdict = PyObject_stgdict((PyObject *)self); |
| 4325 | assert(stgdict); /* Cannot be NULL for array object instances */ |
| 4326 | proto = stgdict->proto; |
| 4327 | itemdict = PyType_stgdict(proto); |
| 4328 | assert(itemdict); /* proto is the item type of the array, a |
| 4329 | ctypes type, so this cannot be NULL */ |
| 4330 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4331 | if (itemdict->getfunc == _ctypes_get_fielddesc("c")->getfunc) { |
Thomas Wouters | dcb3c38 | 2007-08-30 21:01:17 +0000 | [diff] [blame] | 4332 | char *ptr = (char *)self->b_ptr; |
| 4333 | char *dest; |
| 4334 | |
| 4335 | if (slicelen <= 0) |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 4336 | return PyString_FromString(""); |
Thomas Wouters | dcb3c38 | 2007-08-30 21:01:17 +0000 | [diff] [blame] | 4337 | if (step == 1) { |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 4338 | return PyString_FromStringAndSize(ptr + start, |
Thomas Wouters | dcb3c38 | 2007-08-30 21:01:17 +0000 | [diff] [blame] | 4339 | slicelen); |
| 4340 | } |
| 4341 | dest = (char *)PyMem_Malloc(slicelen); |
| 4342 | |
| 4343 | if (dest == NULL) |
| 4344 | return PyErr_NoMemory(); |
| 4345 | |
| 4346 | for (cur = start, i = 0; i < slicelen; |
| 4347 | cur += step, i++) { |
| 4348 | dest[i] = ptr[cur]; |
| 4349 | } |
| 4350 | |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 4351 | np = PyString_FromStringAndSize(dest, slicelen); |
Thomas Wouters | dcb3c38 | 2007-08-30 21:01:17 +0000 | [diff] [blame] | 4352 | PyMem_Free(dest); |
| 4353 | return np; |
| 4354 | } |
| 4355 | #ifdef CTYPES_UNICODE |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4356 | if (itemdict->getfunc == _ctypes_get_fielddesc("u")->getfunc) { |
Thomas Wouters | dcb3c38 | 2007-08-30 21:01:17 +0000 | [diff] [blame] | 4357 | wchar_t *ptr = (wchar_t *)self->b_ptr; |
| 4358 | wchar_t *dest; |
| 4359 | |
| 4360 | if (slicelen <= 0) |
| 4361 | return PyUnicode_FromUnicode(NULL, 0); |
| 4362 | if (step == 1) { |
| 4363 | return PyUnicode_FromWideChar(ptr + start, |
| 4364 | slicelen); |
| 4365 | } |
| 4366 | |
| 4367 | dest = (wchar_t *)PyMem_Malloc( |
| 4368 | slicelen * sizeof(wchar_t)); |
| 4369 | |
| 4370 | for (cur = start, i = 0; i < slicelen; |
| 4371 | cur += step, i++) { |
| 4372 | dest[i] = ptr[cur]; |
| 4373 | } |
| 4374 | |
| 4375 | np = PyUnicode_FromWideChar(dest, slicelen); |
| 4376 | PyMem_Free(dest); |
| 4377 | return np; |
| 4378 | } |
| 4379 | #endif |
| 4380 | |
| 4381 | np = PyList_New(slicelen); |
| 4382 | if (np == NULL) |
| 4383 | return NULL; |
| 4384 | |
| 4385 | for (cur = start, i = 0; i < slicelen; |
| 4386 | cur += step, i++) { |
| 4387 | PyObject *v = Array_item(_self, cur); |
| 4388 | PyList_SET_ITEM(np, i, v); |
| 4389 | } |
| 4390 | return np; |
| 4391 | } |
| 4392 | else { |
| 4393 | PyErr_SetString(PyExc_TypeError, |
| 4394 | "indices must be integers"); |
| 4395 | return NULL; |
| 4396 | } |
| 4397 | |
| 4398 | } |
| 4399 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4400 | static int |
Thomas Heller | bcfccca | 2006-03-22 13:21:16 +0000 | [diff] [blame] | 4401 | Array_ass_item(PyObject *_self, Py_ssize_t index, PyObject *value) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4402 | { |
Thomas Heller | ba29e4c | 2006-03-20 10:22:42 +0000 | [diff] [blame] | 4403 | CDataObject *self = (CDataObject *)_self; |
Thomas Heller | e81c9f6 | 2007-06-08 18:20:09 +0000 | [diff] [blame] | 4404 | Py_ssize_t size, offset; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4405 | StgDictObject *stgdict; |
| 4406 | char *ptr; |
| 4407 | |
| 4408 | if (value == NULL) { |
| 4409 | PyErr_SetString(PyExc_TypeError, |
| 4410 | "Array does not support item deletion"); |
| 4411 | return -1; |
| 4412 | } |
| 4413 | |
| 4414 | stgdict = PyObject_stgdict((PyObject *)self); |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 4415 | assert(stgdict); /* Cannot be NULL for array object instances */ |
Thomas Heller | ce049a0 | 2006-07-14 17:51:14 +0000 | [diff] [blame] | 4416 | if (index < 0 || index >= stgdict->length) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4417 | PyErr_SetString(PyExc_IndexError, |
| 4418 | "invalid index"); |
| 4419 | return -1; |
| 4420 | } |
| 4421 | size = stgdict->size / stgdict->length; |
| 4422 | offset = index * size; |
| 4423 | ptr = self->b_ptr + offset; |
| 4424 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4425 | return PyCData_set((PyObject *)self, stgdict->proto, stgdict->setfunc, value, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4426 | index, size, ptr); |
| 4427 | } |
| 4428 | |
| 4429 | static int |
Thomas Heller | bcfccca | 2006-03-22 13:21:16 +0000 | [diff] [blame] | 4430 | Array_ass_slice(PyObject *_self, Py_ssize_t ilow, Py_ssize_t ihigh, PyObject *value) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4431 | { |
Thomas Heller | ba29e4c | 2006-03-20 10:22:42 +0000 | [diff] [blame] | 4432 | CDataObject *self = (CDataObject *)_self; |
Thomas Heller | e81c9f6 | 2007-06-08 18:20:09 +0000 | [diff] [blame] | 4433 | Py_ssize_t i, len; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4434 | |
| 4435 | if (value == NULL) { |
| 4436 | PyErr_SetString(PyExc_TypeError, |
| 4437 | "Array does not support item deletion"); |
| 4438 | return -1; |
| 4439 | } |
| 4440 | |
| 4441 | if (ilow < 0) |
| 4442 | ilow = 0; |
Thomas Heller | ce049a0 | 2006-07-14 17:51:14 +0000 | [diff] [blame] | 4443 | else if (ilow > self->b_length) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4444 | ilow = self->b_length; |
| 4445 | if (ihigh < 0) |
| 4446 | ihigh = 0; |
| 4447 | if (ihigh < ilow) |
| 4448 | ihigh = ilow; |
Thomas Heller | ce049a0 | 2006-07-14 17:51:14 +0000 | [diff] [blame] | 4449 | else if (ihigh > self->b_length) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4450 | ihigh = self->b_length; |
| 4451 | |
| 4452 | len = PySequence_Length(value); |
Thomas Heller | ce049a0 | 2006-07-14 17:51:14 +0000 | [diff] [blame] | 4453 | if (len != ihigh - ilow) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4454 | PyErr_SetString(PyExc_ValueError, |
| 4455 | "Can only assign sequence of same size"); |
| 4456 | return -1; |
| 4457 | } |
| 4458 | for (i = 0; i < len; i++) { |
| 4459 | PyObject *item = PySequence_GetItem(value, i); |
| 4460 | int result; |
| 4461 | if (item == NULL) |
| 4462 | return -1; |
Thomas Heller | ba29e4c | 2006-03-20 10:22:42 +0000 | [diff] [blame] | 4463 | result = Array_ass_item(_self, i+ilow, item); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4464 | Py_DECREF(item); |
| 4465 | if (result == -1) |
| 4466 | return -1; |
| 4467 | } |
| 4468 | return 0; |
| 4469 | } |
| 4470 | |
Thomas Wouters | dcb3c38 | 2007-08-30 21:01:17 +0000 | [diff] [blame] | 4471 | static int |
| 4472 | Array_ass_subscript(PyObject *_self, PyObject *item, PyObject *value) |
| 4473 | { |
| 4474 | CDataObject *self = (CDataObject *)_self; |
| 4475 | |
| 4476 | if (value == NULL) { |
| 4477 | PyErr_SetString(PyExc_TypeError, |
| 4478 | "Array does not support item deletion"); |
| 4479 | return -1; |
| 4480 | } |
| 4481 | |
| 4482 | if (PyIndex_Check(item)) { |
| 4483 | Py_ssize_t i = PyNumber_AsSsize_t(item, PyExc_IndexError); |
| 4484 | |
| 4485 | if (i == -1 && PyErr_Occurred()) |
| 4486 | return -1; |
| 4487 | if (i < 0) |
| 4488 | i += self->b_length; |
| 4489 | return Array_ass_item(_self, i, value); |
| 4490 | } |
| 4491 | else if (PySlice_Check(item)) { |
| 4492 | Py_ssize_t start, stop, step, slicelen, otherlen, i, cur; |
| 4493 | |
| 4494 | if (PySlice_GetIndicesEx((PySliceObject *)item, |
| 4495 | self->b_length, &start, &stop, |
| 4496 | &step, &slicelen) < 0) { |
| 4497 | return -1; |
| 4498 | } |
| 4499 | if ((step < 0 && start < stop) || |
| 4500 | (step > 0 && start > stop)) |
| 4501 | stop = start; |
| 4502 | |
| 4503 | otherlen = PySequence_Length(value); |
| 4504 | if (otherlen != slicelen) { |
| 4505 | PyErr_SetString(PyExc_ValueError, |
| 4506 | "Can only assign sequence of same size"); |
| 4507 | return -1; |
| 4508 | } |
| 4509 | for (cur = start, i = 0; i < otherlen; cur += step, i++) { |
| 4510 | PyObject *item = PySequence_GetItem(value, i); |
| 4511 | int result; |
| 4512 | if (item == NULL) |
| 4513 | return -1; |
| 4514 | result = Array_ass_item(_self, cur, item); |
| 4515 | Py_DECREF(item); |
| 4516 | if (result == -1) |
| 4517 | return -1; |
| 4518 | } |
| 4519 | return 0; |
| 4520 | } |
| 4521 | else { |
| 4522 | PyErr_SetString(PyExc_TypeError, |
| 4523 | "indices must be integer"); |
| 4524 | return -1; |
| 4525 | } |
| 4526 | } |
| 4527 | |
Thomas Heller | bcfccca | 2006-03-22 13:21:16 +0000 | [diff] [blame] | 4528 | static Py_ssize_t |
Thomas Heller | ba29e4c | 2006-03-20 10:22:42 +0000 | [diff] [blame] | 4529 | Array_length(PyObject *_self) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4530 | { |
Thomas Heller | ba29e4c | 2006-03-20 10:22:42 +0000 | [diff] [blame] | 4531 | CDataObject *self = (CDataObject *)_self; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4532 | return self->b_length; |
| 4533 | } |
| 4534 | |
| 4535 | static PySequenceMethods Array_as_sequence = { |
Thomas Heller | ba29e4c | 2006-03-20 10:22:42 +0000 | [diff] [blame] | 4536 | Array_length, /* sq_length; */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4537 | 0, /* sq_concat; */ |
| 4538 | 0, /* sq_repeat; */ |
Thomas Heller | ba29e4c | 2006-03-20 10:22:42 +0000 | [diff] [blame] | 4539 | Array_item, /* sq_item; */ |
| 4540 | Array_slice, /* sq_slice; */ |
| 4541 | Array_ass_item, /* sq_ass_item; */ |
| 4542 | Array_ass_slice, /* sq_ass_slice; */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4543 | 0, /* sq_contains; */ |
| 4544 | |
| 4545 | 0, /* sq_inplace_concat; */ |
| 4546 | 0, /* sq_inplace_repeat; */ |
| 4547 | }; |
| 4548 | |
Thomas Wouters | dcb3c38 | 2007-08-30 21:01:17 +0000 | [diff] [blame] | 4549 | static PyMappingMethods Array_as_mapping = { |
| 4550 | Array_length, |
| 4551 | Array_subscript, |
| 4552 | Array_ass_subscript, |
| 4553 | }; |
| 4554 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4555 | PyTypeObject PyCArray_Type = { |
Martin v. Löwis | 6819210 | 2007-07-21 06:55:02 +0000 | [diff] [blame] | 4556 | PyVarObject_HEAD_INIT(NULL, 0) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4557 | "_ctypes.Array", |
| 4558 | sizeof(CDataObject), /* tp_basicsize */ |
| 4559 | 0, /* tp_itemsize */ |
| 4560 | 0, /* tp_dealloc */ |
| 4561 | 0, /* tp_print */ |
| 4562 | 0, /* tp_getattr */ |
| 4563 | 0, /* tp_setattr */ |
| 4564 | 0, /* tp_compare */ |
| 4565 | 0, /* tp_repr */ |
| 4566 | 0, /* tp_as_number */ |
| 4567 | &Array_as_sequence, /* tp_as_sequence */ |
Thomas Wouters | dcb3c38 | 2007-08-30 21:01:17 +0000 | [diff] [blame] | 4568 | &Array_as_mapping, /* tp_as_mapping */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4569 | 0, /* tp_hash */ |
| 4570 | 0, /* tp_call */ |
| 4571 | 0, /* tp_str */ |
| 4572 | 0, /* tp_getattro */ |
| 4573 | 0, /* tp_setattro */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4574 | &PyCData_as_buffer, /* tp_as_buffer */ |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 4575 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_NEWBUFFER | Py_TPFLAGS_BASETYPE, /* tp_flags */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4576 | "XXX to be provided", /* tp_doc */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4577 | (traverseproc)PyCData_traverse, /* tp_traverse */ |
| 4578 | (inquiry)PyCData_clear, /* tp_clear */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4579 | 0, /* tp_richcompare */ |
| 4580 | 0, /* tp_weaklistoffset */ |
| 4581 | 0, /* tp_iter */ |
| 4582 | 0, /* tp_iternext */ |
| 4583 | 0, /* tp_methods */ |
| 4584 | 0, /* tp_members */ |
Thomas Heller | 8672004 | 2006-08-14 11:17:48 +0000 | [diff] [blame] | 4585 | 0, /* tp_getset */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4586 | 0, /* tp_base */ |
| 4587 | 0, /* tp_dict */ |
| 4588 | 0, /* tp_descr_get */ |
| 4589 | 0, /* tp_descr_set */ |
| 4590 | 0, /* tp_dictoffset */ |
| 4591 | (initproc)Array_init, /* tp_init */ |
| 4592 | 0, /* tp_alloc */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4593 | GenericPyCData_new, /* tp_new */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4594 | 0, /* tp_free */ |
| 4595 | }; |
| 4596 | |
| 4597 | PyObject * |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4598 | PyCArrayType_from_ctype(PyObject *itemtype, Py_ssize_t length) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4599 | { |
Thomas Heller | e4c03e4 | 2008-01-24 18:36:27 +0000 | [diff] [blame] | 4600 | static PyObject *cache; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4601 | PyObject *key; |
| 4602 | PyObject *result; |
| 4603 | char name[256]; |
Thomas Heller | 71dba4c | 2008-01-24 18:54:12 +0000 | [diff] [blame] | 4604 | PyObject *len; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4605 | |
Thomas Heller | e4c03e4 | 2008-01-24 18:36:27 +0000 | [diff] [blame] | 4606 | if (cache == NULL) { |
| 4607 | cache = PyDict_New(); |
| 4608 | if (cache == NULL) |
| 4609 | return NULL; |
| 4610 | } |
Thomas Heller | 71dba4c | 2008-01-24 18:54:12 +0000 | [diff] [blame] | 4611 | len = PyInt_FromSsize_t(length); |
| 4612 | if (len == NULL) |
| 4613 | return NULL; |
| 4614 | key = PyTuple_Pack(2, itemtype, len); |
| 4615 | Py_DECREF(len); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4616 | if (!key) |
| 4617 | return NULL; |
Thomas Heller | e4c03e4 | 2008-01-24 18:36:27 +0000 | [diff] [blame] | 4618 | result = PyDict_GetItemProxy(cache, key); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4619 | if (result) { |
Thomas Heller | e4c03e4 | 2008-01-24 18:36:27 +0000 | [diff] [blame] | 4620 | Py_INCREF(result); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4621 | Py_DECREF(key); |
| 4622 | return result; |
Thomas Heller | e4c03e4 | 2008-01-24 18:36:27 +0000 | [diff] [blame] | 4623 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4624 | |
| 4625 | if (!PyType_Check(itemtype)) { |
| 4626 | PyErr_SetString(PyExc_TypeError, |
| 4627 | "Expected a type object"); |
| 4628 | return NULL; |
| 4629 | } |
Thomas Heller | fe8f862 | 2006-03-14 19:53:09 +0000 | [diff] [blame] | 4630 | #ifdef MS_WIN64 |
| 4631 | sprintf(name, "%.200s_Array_%Id", |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4632 | ((PyTypeObject *)itemtype)->tp_name, length); |
Thomas Heller | fe8f862 | 2006-03-14 19:53:09 +0000 | [diff] [blame] | 4633 | #else |
| 4634 | sprintf(name, "%.200s_Array_%ld", |
| 4635 | ((PyTypeObject *)itemtype)->tp_name, (long)length); |
| 4636 | #endif |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4637 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4638 | result = PyObject_CallFunction((PyObject *)&PyCArrayType_Type, |
Thomas Heller | 9998f78 | 2006-03-15 21:49:52 +0000 | [diff] [blame] | 4639 | #if (PY_VERSION_HEX < 0x02050000) |
| 4640 | "s(O){s:i,s:O}", |
| 4641 | #else |
Thomas Heller | fe8f862 | 2006-03-14 19:53:09 +0000 | [diff] [blame] | 4642 | "s(O){s:n,s:O}", |
Thomas Heller | 9998f78 | 2006-03-15 21:49:52 +0000 | [diff] [blame] | 4643 | #endif |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4644 | name, |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4645 | &PyCArray_Type, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4646 | "_length_", |
| 4647 | length, |
| 4648 | "_type_", |
| 4649 | itemtype |
| 4650 | ); |
Thomas Heller | 71dba4c | 2008-01-24 18:54:12 +0000 | [diff] [blame] | 4651 | if (result == NULL) { |
| 4652 | Py_DECREF(key); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4653 | return NULL; |
Thomas Heller | 71dba4c | 2008-01-24 18:54:12 +0000 | [diff] [blame] | 4654 | } |
Thomas Heller | e4c03e4 | 2008-01-24 18:36:27 +0000 | [diff] [blame] | 4655 | if (-1 == PyDict_SetItemProxy(cache, key, result)) { |
Thomas Heller | 902d307 | 2008-01-16 19:16:27 +0000 | [diff] [blame] | 4656 | Py_DECREF(key); |
| 4657 | Py_DECREF(result); |
| 4658 | return NULL; |
| 4659 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4660 | Py_DECREF(key); |
| 4661 | return result; |
| 4662 | } |
| 4663 | |
| 4664 | |
| 4665 | /******************************************************************/ |
| 4666 | /* |
| 4667 | Simple_Type |
| 4668 | */ |
| 4669 | |
| 4670 | static int |
| 4671 | Simple_set_value(CDataObject *self, PyObject *value) |
| 4672 | { |
| 4673 | PyObject *result; |
| 4674 | StgDictObject *dict = PyObject_stgdict((PyObject *)self); |
| 4675 | |
Thomas Heller | 153038e | 2007-12-18 19:00:34 +0000 | [diff] [blame] | 4676 | if (value == NULL) { |
| 4677 | PyErr_SetString(PyExc_TypeError, |
| 4678 | "can't delete attribute"); |
| 4679 | return -1; |
| 4680 | } |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 4681 | assert(dict); /* Cannot be NULL for CDataObject instances */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4682 | assert(dict->setfunc); |
| 4683 | result = dict->setfunc(self->b_ptr, value, dict->size); |
| 4684 | if (!result) |
| 4685 | return -1; |
| 4686 | |
| 4687 | /* consumes the refcount the setfunc returns */ |
| 4688 | return KeepRef(self, 0, result); |
| 4689 | } |
| 4690 | |
| 4691 | static int |
| 4692 | Simple_init(CDataObject *self, PyObject *args, PyObject *kw) |
| 4693 | { |
| 4694 | PyObject *value = NULL; |
| 4695 | if (!PyArg_UnpackTuple(args, "__init__", 0, 1, &value)) |
| 4696 | return -1; |
| 4697 | if (value) |
| 4698 | return Simple_set_value(self, value); |
| 4699 | return 0; |
| 4700 | } |
| 4701 | |
| 4702 | static PyObject * |
| 4703 | Simple_get_value(CDataObject *self) |
| 4704 | { |
| 4705 | StgDictObject *dict; |
| 4706 | dict = PyObject_stgdict((PyObject *)self); |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 4707 | assert(dict); /* Cannot be NULL for CDataObject instances */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4708 | assert(dict->getfunc); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4709 | return dict->getfunc(self->b_ptr, self->b_size); |
| 4710 | } |
| 4711 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4712 | static PyGetSetDef Simple_getsets[] = { |
| 4713 | { "value", (getter)Simple_get_value, (setter)Simple_set_value, |
| 4714 | "current value", NULL }, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4715 | { NULL, NULL } |
| 4716 | }; |
| 4717 | |
| 4718 | static PyObject * |
| 4719 | Simple_from_outparm(PyObject *self, PyObject *args) |
| 4720 | { |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4721 | if (_ctypes_simple_instance((PyObject *)Py_TYPE(self))) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4722 | Py_INCREF(self); |
| 4723 | return self; |
| 4724 | } |
| 4725 | /* call stgdict->getfunc */ |
| 4726 | return Simple_get_value((CDataObject *)self); |
| 4727 | } |
| 4728 | |
| 4729 | static PyMethodDef Simple_methods[] = { |
| 4730 | { "__ctypes_from_outparam__", Simple_from_outparm, METH_NOARGS, }, |
| 4731 | { NULL, NULL }, |
| 4732 | }; |
| 4733 | |
| 4734 | static int Simple_nonzero(CDataObject *self) |
| 4735 | { |
| 4736 | return memcmp(self->b_ptr, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", self->b_size); |
| 4737 | } |
| 4738 | |
| 4739 | static PyNumberMethods Simple_as_number = { |
| 4740 | 0, /* nb_add */ |
| 4741 | 0, /* nb_subtract */ |
| 4742 | 0, /* nb_multiply */ |
| 4743 | 0, /* nb_divide */ |
| 4744 | 0, /* nb_remainder */ |
| 4745 | 0, /* nb_divmod */ |
| 4746 | 0, /* nb_power */ |
| 4747 | 0, /* nb_negative */ |
| 4748 | 0, /* nb_positive */ |
| 4749 | 0, /* nb_absolute */ |
| 4750 | (inquiry)Simple_nonzero, /* nb_nonzero */ |
| 4751 | }; |
| 4752 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4753 | /* "%s(%s)" % (self.__class__.__name__, self.value) */ |
| 4754 | static PyObject * |
| 4755 | Simple_repr(CDataObject *self) |
| 4756 | { |
| 4757 | PyObject *val, *name, *args, *result; |
| 4758 | static PyObject *format; |
| 4759 | |
Christian Heimes | e93237d | 2007-12-19 02:37:44 +0000 | [diff] [blame] | 4760 | if (Py_TYPE(self)->tp_base != &Simple_Type) { |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 4761 | return PyString_FromFormat("<%s object at %p>", |
Christian Heimes | e93237d | 2007-12-19 02:37:44 +0000 | [diff] [blame] | 4762 | Py_TYPE(self)->tp_name, self); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4763 | } |
| 4764 | |
| 4765 | if (format == NULL) { |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 4766 | format = PyString_InternFromString("%s(%r)"); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4767 | if (format == NULL) |
| 4768 | return NULL; |
| 4769 | } |
| 4770 | |
| 4771 | val = Simple_get_value(self); |
| 4772 | if (val == NULL) |
| 4773 | return NULL; |
| 4774 | |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 4775 | name = PyString_FromString(Py_TYPE(self)->tp_name); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4776 | if (name == NULL) { |
Thomas Heller | fe8f862 | 2006-03-14 19:53:09 +0000 | [diff] [blame] | 4777 | Py_DECREF(val); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4778 | return NULL; |
| 4779 | } |
| 4780 | |
| 4781 | args = PyTuple_Pack(2, name, val); |
| 4782 | Py_DECREF(name); |
| 4783 | Py_DECREF(val); |
| 4784 | if (args == NULL) |
| 4785 | return NULL; |
| 4786 | |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 4787 | result = PyString_Format(format, args); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4788 | Py_DECREF(args); |
| 4789 | return result; |
| 4790 | } |
| 4791 | |
| 4792 | static PyTypeObject Simple_Type = { |
Martin v. Löwis | 6819210 | 2007-07-21 06:55:02 +0000 | [diff] [blame] | 4793 | PyVarObject_HEAD_INIT(NULL, 0) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4794 | "_ctypes._SimpleCData", |
| 4795 | sizeof(CDataObject), /* tp_basicsize */ |
| 4796 | 0, /* tp_itemsize */ |
| 4797 | 0, /* tp_dealloc */ |
| 4798 | 0, /* tp_print */ |
| 4799 | 0, /* tp_getattr */ |
| 4800 | 0, /* tp_setattr */ |
| 4801 | 0, /* tp_compare */ |
| 4802 | (reprfunc)&Simple_repr, /* tp_repr */ |
| 4803 | &Simple_as_number, /* tp_as_number */ |
| 4804 | 0, /* tp_as_sequence */ |
| 4805 | 0, /* tp_as_mapping */ |
| 4806 | 0, /* tp_hash */ |
| 4807 | 0, /* tp_call */ |
| 4808 | 0, /* tp_str */ |
| 4809 | 0, /* tp_getattro */ |
| 4810 | 0, /* tp_setattro */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4811 | &PyCData_as_buffer, /* tp_as_buffer */ |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 4812 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_NEWBUFFER | Py_TPFLAGS_BASETYPE, /* tp_flags */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4813 | "XXX to be provided", /* tp_doc */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4814 | (traverseproc)PyCData_traverse, /* tp_traverse */ |
| 4815 | (inquiry)PyCData_clear, /* tp_clear */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4816 | 0, /* tp_richcompare */ |
| 4817 | 0, /* tp_weaklistoffset */ |
| 4818 | 0, /* tp_iter */ |
| 4819 | 0, /* tp_iternext */ |
| 4820 | Simple_methods, /* tp_methods */ |
| 4821 | 0, /* tp_members */ |
| 4822 | Simple_getsets, /* tp_getset */ |
| 4823 | 0, /* tp_base */ |
| 4824 | 0, /* tp_dict */ |
| 4825 | 0, /* tp_descr_get */ |
| 4826 | 0, /* tp_descr_set */ |
| 4827 | 0, /* tp_dictoffset */ |
| 4828 | (initproc)Simple_init, /* tp_init */ |
| 4829 | 0, /* tp_alloc */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4830 | GenericPyCData_new, /* tp_new */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4831 | 0, /* tp_free */ |
| 4832 | }; |
| 4833 | |
| 4834 | /******************************************************************/ |
| 4835 | /* |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4836 | PyCPointer_Type |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4837 | */ |
| 4838 | static PyObject * |
Thomas Heller | bcfccca | 2006-03-22 13:21:16 +0000 | [diff] [blame] | 4839 | Pointer_item(PyObject *_self, Py_ssize_t index) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4840 | { |
Thomas Heller | ba29e4c | 2006-03-20 10:22:42 +0000 | [diff] [blame] | 4841 | CDataObject *self = (CDataObject *)_self; |
Thomas Heller | e81c9f6 | 2007-06-08 18:20:09 +0000 | [diff] [blame] | 4842 | Py_ssize_t size; |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 4843 | Py_ssize_t offset; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4844 | StgDictObject *stgdict, *itemdict; |
| 4845 | PyObject *proto; |
| 4846 | |
| 4847 | if (*(void **)self->b_ptr == NULL) { |
| 4848 | PyErr_SetString(PyExc_ValueError, |
| 4849 | "NULL pointer access"); |
| 4850 | return NULL; |
| 4851 | } |
| 4852 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4853 | stgdict = PyObject_stgdict((PyObject *)self); |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 4854 | assert(stgdict); /* Cannot be NULL for pointer object instances */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4855 | |
| 4856 | proto = stgdict->proto; |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 4857 | assert(proto); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4858 | itemdict = PyType_stgdict(proto); |
Thomas Heller | 0b21b43 | 2006-08-18 14:38:46 +0000 | [diff] [blame] | 4859 | assert(itemdict); /* proto is the item type of the pointer, a ctypes |
| 4860 | type, so this cannot be NULL */ |
| 4861 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4862 | size = itemdict->size; |
| 4863 | offset = index * itemdict->size; |
| 4864 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4865 | return PyCData_get(proto, stgdict->getfunc, (PyObject *)self, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4866 | index, size, (*(char **)self->b_ptr) + offset); |
| 4867 | } |
| 4868 | |
| 4869 | static int |
Thomas Heller | bcfccca | 2006-03-22 13:21:16 +0000 | [diff] [blame] | 4870 | Pointer_ass_item(PyObject *_self, Py_ssize_t index, PyObject *value) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4871 | { |
Thomas Heller | ba29e4c | 2006-03-20 10:22:42 +0000 | [diff] [blame] | 4872 | CDataObject *self = (CDataObject *)_self; |
Thomas Heller | e81c9f6 | 2007-06-08 18:20:09 +0000 | [diff] [blame] | 4873 | Py_ssize_t size; |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 4874 | Py_ssize_t offset; |
| 4875 | StgDictObject *stgdict, *itemdict; |
| 4876 | PyObject *proto; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4877 | |
| 4878 | if (value == NULL) { |
| 4879 | PyErr_SetString(PyExc_TypeError, |
| 4880 | "Pointer does not support item deletion"); |
| 4881 | return -1; |
| 4882 | } |
| 4883 | |
| 4884 | if (*(void **)self->b_ptr == NULL) { |
| 4885 | PyErr_SetString(PyExc_ValueError, |
| 4886 | "NULL pointer access"); |
| 4887 | return -1; |
| 4888 | } |
| 4889 | |
| 4890 | stgdict = PyObject_stgdict((PyObject *)self); |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 4891 | assert(stgdict); /* Cannot be NULL fr pointer instances */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4892 | |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 4893 | proto = stgdict->proto; |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 4894 | assert(proto); |
| 4895 | |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 4896 | itemdict = PyType_stgdict(proto); |
Thomas Heller | 0b21b43 | 2006-08-18 14:38:46 +0000 | [diff] [blame] | 4897 | assert(itemdict); /* Cannot be NULL because the itemtype of a pointer |
| 4898 | is always a ctypes type */ |
| 4899 | |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 4900 | size = itemdict->size; |
| 4901 | offset = index * itemdict->size; |
| 4902 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4903 | return PyCData_set((PyObject *)self, proto, stgdict->setfunc, value, |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 4904 | index, size, (*(char **)self->b_ptr) + offset); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4905 | } |
| 4906 | |
| 4907 | static PyObject * |
| 4908 | Pointer_get_contents(CDataObject *self, void *closure) |
| 4909 | { |
| 4910 | StgDictObject *stgdict; |
| 4911 | |
| 4912 | if (*(void **)self->b_ptr == NULL) { |
| 4913 | PyErr_SetString(PyExc_ValueError, |
| 4914 | "NULL pointer access"); |
| 4915 | return NULL; |
| 4916 | } |
| 4917 | |
| 4918 | stgdict = PyObject_stgdict((PyObject *)self); |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 4919 | assert(stgdict); /* Cannot be NULL fr pointer instances */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4920 | return PyCData_FromBaseObj(stgdict->proto, |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 4921 | (PyObject *)self, 0, |
| 4922 | *(void **)self->b_ptr); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4923 | } |
| 4924 | |
| 4925 | static int |
| 4926 | Pointer_set_contents(CDataObject *self, PyObject *value, void *closure) |
| 4927 | { |
| 4928 | StgDictObject *stgdict; |
| 4929 | CDataObject *dst; |
| 4930 | PyObject *keep; |
| 4931 | |
| 4932 | if (value == NULL) { |
| 4933 | PyErr_SetString(PyExc_TypeError, |
| 4934 | "Pointer does not support item deletion"); |
| 4935 | return -1; |
| 4936 | } |
| 4937 | stgdict = PyObject_stgdict((PyObject *)self); |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 4938 | assert(stgdict); /* Cannot be NULL fr pointer instances */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4939 | assert(stgdict->proto); |
| 4940 | if (!CDataObject_Check(value) |
| 4941 | || 0 == PyObject_IsInstance(value, stgdict->proto)) { |
| 4942 | /* XXX PyObject_IsInstance could return -1! */ |
| 4943 | PyErr_Format(PyExc_TypeError, |
| 4944 | "expected %s instead of %s", |
| 4945 | ((PyTypeObject *)(stgdict->proto))->tp_name, |
Christian Heimes | e93237d | 2007-12-19 02:37:44 +0000 | [diff] [blame] | 4946 | Py_TYPE(value)->tp_name); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4947 | return -1; |
| 4948 | } |
| 4949 | |
| 4950 | dst = (CDataObject *)value; |
| 4951 | *(void **)self->b_ptr = dst->b_ptr; |
| 4952 | |
| 4953 | /* |
| 4954 | A Pointer instance must keep a the value it points to alive. So, a |
| 4955 | pointer instance has b_length set to 2 instead of 1, and we set |
| 4956 | 'value' itself as the second item of the b_objects list, additionally. |
| 4957 | */ |
| 4958 | Py_INCREF(value); |
| 4959 | if (-1 == KeepRef(self, 1, value)) |
| 4960 | return -1; |
| 4961 | |
| 4962 | keep = GetKeepedObjects(dst); |
| 4963 | Py_INCREF(keep); |
| 4964 | return KeepRef(self, 0, keep); |
| 4965 | } |
| 4966 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4967 | static PyGetSetDef Pointer_getsets[] = { |
| 4968 | { "contents", (getter)Pointer_get_contents, |
| 4969 | (setter)Pointer_set_contents, |
| 4970 | "the object this pointer points to (read-write)", NULL }, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4971 | { NULL, NULL } |
| 4972 | }; |
| 4973 | |
| 4974 | static int |
| 4975 | Pointer_init(CDataObject *self, PyObject *args, PyObject *kw) |
| 4976 | { |
| 4977 | PyObject *value = NULL; |
| 4978 | |
Thomas Heller | d3ed492 | 2008-04-11 14:20:26 +0000 | [diff] [blame] | 4979 | if (!PyArg_UnpackTuple(args, "POINTER", 0, 1, &value)) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4980 | return -1; |
| 4981 | if (value == NULL) |
| 4982 | return 0; |
| 4983 | return Pointer_set_contents(self, value, NULL); |
| 4984 | } |
| 4985 | |
| 4986 | static PyObject * |
| 4987 | Pointer_new(PyTypeObject *type, PyObject *args, PyObject *kw) |
| 4988 | { |
| 4989 | StgDictObject *dict = PyType_stgdict((PyObject *)type); |
| 4990 | if (!dict || !dict->proto) { |
| 4991 | PyErr_SetString(PyExc_TypeError, |
| 4992 | "Cannot create instance: has no _type_"); |
| 4993 | return NULL; |
| 4994 | } |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 4995 | return GenericPyCData_new(type, args, kw); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 4996 | } |
| 4997 | |
| 4998 | static PyObject * |
Thomas Heller | ba29e4c | 2006-03-20 10:22:42 +0000 | [diff] [blame] | 4999 | Pointer_slice(PyObject *_self, Py_ssize_t ilow, Py_ssize_t ihigh) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5000 | { |
Thomas Heller | ba29e4c | 2006-03-20 10:22:42 +0000 | [diff] [blame] | 5001 | CDataObject *self = (CDataObject *)_self; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5002 | PyListObject *np; |
| 5003 | StgDictObject *stgdict, *itemdict; |
| 5004 | PyObject *proto; |
Thomas Heller | fe8f862 | 2006-03-14 19:53:09 +0000 | [diff] [blame] | 5005 | Py_ssize_t i, len; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5006 | |
| 5007 | if (ilow < 0) |
| 5008 | ilow = 0; |
| 5009 | if (ihigh < ilow) |
| 5010 | ihigh = ilow; |
| 5011 | len = ihigh - ilow; |
| 5012 | |
| 5013 | stgdict = PyObject_stgdict((PyObject *)self); |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 5014 | assert(stgdict); /* Cannot be NULL fr pointer instances */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5015 | proto = stgdict->proto; |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 5016 | assert(proto); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5017 | itemdict = PyType_stgdict(proto); |
Thomas Heller | d32e616 | 2006-08-16 13:03:11 +0000 | [diff] [blame] | 5018 | assert(itemdict); |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5019 | if (itemdict->getfunc == _ctypes_get_fielddesc("c")->getfunc) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5020 | char *ptr = *(char **)self->b_ptr; |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 5021 | return PyString_FromStringAndSize(ptr + ilow, len); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5022 | #ifdef CTYPES_UNICODE |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5023 | } else if (itemdict->getfunc == _ctypes_get_fielddesc("u")->getfunc) { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5024 | wchar_t *ptr = *(wchar_t **)self->b_ptr; |
| 5025 | return PyUnicode_FromWideChar(ptr + ilow, len); |
| 5026 | #endif |
| 5027 | } |
| 5028 | |
| 5029 | np = (PyListObject *) PyList_New(len); |
| 5030 | if (np == NULL) |
| 5031 | return NULL; |
| 5032 | |
| 5033 | for (i = 0; i < len; i++) { |
Thomas Heller | ba29e4c | 2006-03-20 10:22:42 +0000 | [diff] [blame] | 5034 | PyObject *v = Pointer_item(_self, i+ilow); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5035 | PyList_SET_ITEM(np, i, v); |
| 5036 | } |
| 5037 | return (PyObject *)np; |
| 5038 | } |
| 5039 | |
Thomas Wouters | dcb3c38 | 2007-08-30 21:01:17 +0000 | [diff] [blame] | 5040 | static PyObject * |
| 5041 | Pointer_subscript(PyObject *_self, PyObject *item) |
| 5042 | { |
| 5043 | CDataObject *self = (CDataObject *)_self; |
| 5044 | if (PyIndex_Check(item)) { |
| 5045 | Py_ssize_t i = PyNumber_AsSsize_t(item, PyExc_IndexError); |
| 5046 | if (i == -1 && PyErr_Occurred()) |
| 5047 | return NULL; |
| 5048 | return Pointer_item(_self, i); |
| 5049 | } |
| 5050 | else if (PySlice_Check(item)) { |
| 5051 | PySliceObject *slice = (PySliceObject *)item; |
| 5052 | Py_ssize_t start, stop, step; |
| 5053 | PyObject *np; |
| 5054 | StgDictObject *stgdict, *itemdict; |
| 5055 | PyObject *proto; |
| 5056 | Py_ssize_t i, len, cur; |
| 5057 | |
| 5058 | /* Since pointers have no length, and we want to apply |
| 5059 | different semantics to negative indices than normal |
| 5060 | slicing, we have to dissect the slice object ourselves.*/ |
| 5061 | if (slice->step == Py_None) { |
| 5062 | step = 1; |
| 5063 | } |
| 5064 | else { |
| 5065 | step = PyNumber_AsSsize_t(slice->step, |
| 5066 | PyExc_ValueError); |
| 5067 | if (step == -1 && PyErr_Occurred()) |
| 5068 | return NULL; |
| 5069 | if (step == 0) { |
| 5070 | PyErr_SetString(PyExc_ValueError, |
| 5071 | "slice step cannot be zero"); |
| 5072 | return NULL; |
| 5073 | } |
| 5074 | } |
| 5075 | if (slice->start == Py_None) { |
| 5076 | if (step < 0) { |
| 5077 | PyErr_SetString(PyExc_ValueError, |
| 5078 | "slice start is required " |
| 5079 | "for step < 0"); |
| 5080 | return NULL; |
| 5081 | } |
| 5082 | start = 0; |
| 5083 | } |
| 5084 | else { |
| 5085 | start = PyNumber_AsSsize_t(slice->start, |
| 5086 | PyExc_ValueError); |
| 5087 | if (start == -1 && PyErr_Occurred()) |
| 5088 | return NULL; |
| 5089 | } |
| 5090 | if (slice->stop == Py_None) { |
| 5091 | PyErr_SetString(PyExc_ValueError, |
| 5092 | "slice stop is required"); |
| 5093 | return NULL; |
| 5094 | } |
| 5095 | stop = PyNumber_AsSsize_t(slice->stop, |
| 5096 | PyExc_ValueError); |
| 5097 | if (stop == -1 && PyErr_Occurred()) |
| 5098 | return NULL; |
| 5099 | if ((step > 0 && start > stop) || |
| 5100 | (step < 0 && start < stop)) |
| 5101 | len = 0; |
| 5102 | else if (step > 0) |
| 5103 | len = (stop - start - 1) / step + 1; |
| 5104 | else |
| 5105 | len = (stop - start + 1) / step + 1; |
| 5106 | |
| 5107 | stgdict = PyObject_stgdict((PyObject *)self); |
| 5108 | assert(stgdict); /* Cannot be NULL for pointer instances */ |
| 5109 | proto = stgdict->proto; |
| 5110 | assert(proto); |
| 5111 | itemdict = PyType_stgdict(proto); |
| 5112 | assert(itemdict); |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5113 | if (itemdict->getfunc == _ctypes_get_fielddesc("c")->getfunc) { |
Thomas Wouters | dcb3c38 | 2007-08-30 21:01:17 +0000 | [diff] [blame] | 5114 | char *ptr = *(char **)self->b_ptr; |
| 5115 | char *dest; |
| 5116 | |
| 5117 | if (len <= 0) |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 5118 | return PyString_FromString(""); |
Thomas Wouters | dcb3c38 | 2007-08-30 21:01:17 +0000 | [diff] [blame] | 5119 | if (step == 1) { |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 5120 | return PyString_FromStringAndSize(ptr + start, |
Thomas Wouters | dcb3c38 | 2007-08-30 21:01:17 +0000 | [diff] [blame] | 5121 | len); |
| 5122 | } |
| 5123 | dest = (char *)PyMem_Malloc(len); |
| 5124 | if (dest == NULL) |
| 5125 | return PyErr_NoMemory(); |
| 5126 | for (cur = start, i = 0; i < len; cur += step, i++) { |
| 5127 | dest[i] = ptr[cur]; |
| 5128 | } |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 5129 | np = PyString_FromStringAndSize(dest, len); |
Thomas Wouters | dcb3c38 | 2007-08-30 21:01:17 +0000 | [diff] [blame] | 5130 | PyMem_Free(dest); |
| 5131 | return np; |
| 5132 | } |
| 5133 | #ifdef CTYPES_UNICODE |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5134 | if (itemdict->getfunc == _ctypes_get_fielddesc("u")->getfunc) { |
Thomas Wouters | dcb3c38 | 2007-08-30 21:01:17 +0000 | [diff] [blame] | 5135 | wchar_t *ptr = *(wchar_t **)self->b_ptr; |
| 5136 | wchar_t *dest; |
| 5137 | |
| 5138 | if (len <= 0) |
| 5139 | return PyUnicode_FromUnicode(NULL, 0); |
| 5140 | if (step == 1) { |
| 5141 | return PyUnicode_FromWideChar(ptr + start, |
| 5142 | len); |
| 5143 | } |
| 5144 | dest = (wchar_t *)PyMem_Malloc(len * sizeof(wchar_t)); |
| 5145 | if (dest == NULL) |
| 5146 | return PyErr_NoMemory(); |
| 5147 | for (cur = start, i = 0; i < len; cur += step, i++) { |
| 5148 | dest[i] = ptr[cur]; |
| 5149 | } |
| 5150 | np = PyUnicode_FromWideChar(dest, len); |
| 5151 | PyMem_Free(dest); |
| 5152 | return np; |
| 5153 | } |
| 5154 | #endif |
| 5155 | |
| 5156 | np = PyList_New(len); |
| 5157 | if (np == NULL) |
| 5158 | return NULL; |
| 5159 | |
| 5160 | for (cur = start, i = 0; i < len; cur += step, i++) { |
| 5161 | PyObject *v = Pointer_item(_self, cur); |
| 5162 | PyList_SET_ITEM(np, i, v); |
| 5163 | } |
| 5164 | return np; |
| 5165 | } |
| 5166 | else { |
| 5167 | PyErr_SetString(PyExc_TypeError, |
| 5168 | "Pointer indices must be integer"); |
| 5169 | return NULL; |
| 5170 | } |
| 5171 | } |
| 5172 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5173 | static PySequenceMethods Pointer_as_sequence = { |
| 5174 | 0, /* inquiry sq_length; */ |
| 5175 | 0, /* binaryfunc sq_concat; */ |
| 5176 | 0, /* intargfunc sq_repeat; */ |
Thomas Heller | ba29e4c | 2006-03-20 10:22:42 +0000 | [diff] [blame] | 5177 | Pointer_item, /* intargfunc sq_item; */ |
| 5178 | Pointer_slice, /* intintargfunc sq_slice; */ |
| 5179 | Pointer_ass_item, /* intobjargproc sq_ass_item; */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5180 | 0, /* intintobjargproc sq_ass_slice; */ |
| 5181 | 0, /* objobjproc sq_contains; */ |
| 5182 | /* Added in release 2.0 */ |
| 5183 | 0, /* binaryfunc sq_inplace_concat; */ |
| 5184 | 0, /* intargfunc sq_inplace_repeat; */ |
| 5185 | }; |
| 5186 | |
Thomas Wouters | dcb3c38 | 2007-08-30 21:01:17 +0000 | [diff] [blame] | 5187 | static PyMappingMethods Pointer_as_mapping = { |
| 5188 | 0, |
| 5189 | Pointer_subscript, |
| 5190 | }; |
| 5191 | |
Thomas Heller | 0ad5ae0 | 2008-08-19 19:25:04 +0000 | [diff] [blame] | 5192 | static int |
| 5193 | Pointer_nonzero(CDataObject *self) |
| 5194 | { |
| 5195 | return (*(void **)self->b_ptr != NULL); |
| 5196 | } |
| 5197 | |
| 5198 | static PyNumberMethods Pointer_as_number = { |
| 5199 | 0, /* nb_add */ |
| 5200 | 0, /* nb_subtract */ |
| 5201 | 0, /* nb_multiply */ |
| 5202 | 0, /* nb_divide */ |
| 5203 | 0, /* nb_remainder */ |
| 5204 | 0, /* nb_divmod */ |
| 5205 | 0, /* nb_power */ |
| 5206 | 0, /* nb_negative */ |
| 5207 | 0, /* nb_positive */ |
| 5208 | 0, /* nb_absolute */ |
| 5209 | (inquiry)Pointer_nonzero, /* nb_nonzero */ |
| 5210 | }; |
| 5211 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5212 | PyTypeObject PyCPointer_Type = { |
Martin v. Löwis | 6819210 | 2007-07-21 06:55:02 +0000 | [diff] [blame] | 5213 | PyVarObject_HEAD_INIT(NULL, 0) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5214 | "_ctypes._Pointer", |
| 5215 | sizeof(CDataObject), /* tp_basicsize */ |
| 5216 | 0, /* tp_itemsize */ |
| 5217 | 0, /* tp_dealloc */ |
| 5218 | 0, /* tp_print */ |
| 5219 | 0, /* tp_getattr */ |
| 5220 | 0, /* tp_setattr */ |
| 5221 | 0, /* tp_compare */ |
| 5222 | 0, /* tp_repr */ |
| 5223 | &Pointer_as_number, /* tp_as_number */ |
| 5224 | &Pointer_as_sequence, /* tp_as_sequence */ |
Thomas Wouters | dcb3c38 | 2007-08-30 21:01:17 +0000 | [diff] [blame] | 5225 | &Pointer_as_mapping, /* tp_as_mapping */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5226 | 0, /* tp_hash */ |
| 5227 | 0, /* tp_call */ |
| 5228 | 0, /* tp_str */ |
| 5229 | 0, /* tp_getattro */ |
| 5230 | 0, /* tp_setattro */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5231 | &PyCData_as_buffer, /* tp_as_buffer */ |
Thomas Heller | 2e75c45 | 2008-06-05 17:51:15 +0000 | [diff] [blame] | 5232 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_NEWBUFFER | Py_TPFLAGS_BASETYPE, /* tp_flags */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5233 | "XXX to be provided", /* tp_doc */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5234 | (traverseproc)PyCData_traverse, /* tp_traverse */ |
| 5235 | (inquiry)PyCData_clear, /* tp_clear */ |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5236 | 0, /* tp_richcompare */ |
| 5237 | 0, /* tp_weaklistoffset */ |
| 5238 | 0, /* tp_iter */ |
| 5239 | 0, /* tp_iternext */ |
| 5240 | 0, /* tp_methods */ |
| 5241 | 0, /* tp_members */ |
| 5242 | Pointer_getsets, /* tp_getset */ |
| 5243 | 0, /* tp_base */ |
| 5244 | 0, /* tp_dict */ |
| 5245 | 0, /* tp_descr_get */ |
| 5246 | 0, /* tp_descr_set */ |
| 5247 | 0, /* tp_dictoffset */ |
| 5248 | (initproc)Pointer_init, /* tp_init */ |
| 5249 | 0, /* tp_alloc */ |
| 5250 | Pointer_new, /* tp_new */ |
| 5251 | 0, /* tp_free */ |
| 5252 | }; |
| 5253 | |
| 5254 | |
| 5255 | /******************************************************************/ |
| 5256 | /* |
| 5257 | * Module initialization. |
| 5258 | */ |
| 5259 | |
| 5260 | static char *module_docs = |
| 5261 | "Create and manipulate C compatible data types in Python."; |
| 5262 | |
| 5263 | #ifdef MS_WIN32 |
| 5264 | |
| 5265 | static char comerror_doc[] = "Raised when a COM method call failed."; |
| 5266 | |
| 5267 | static PyObject * |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5268 | comerror_init(PyObject *self, PyObject *args) |
| 5269 | { |
| 5270 | PyObject *hresult, *text, *details; |
| 5271 | PyObject *a; |
| 5272 | int status; |
| 5273 | |
| 5274 | if (!PyArg_ParseTuple(args, "OOOO:COMError", &self, &hresult, &text, &details)) |
| 5275 | return NULL; |
| 5276 | |
| 5277 | a = PySequence_GetSlice(args, 1, PySequence_Size(args)); |
| 5278 | if (!a) |
| 5279 | return NULL; |
| 5280 | status = PyObject_SetAttrString(self, "args", a); |
| 5281 | Py_DECREF(a); |
| 5282 | if (status < 0) |
| 5283 | return NULL; |
| 5284 | |
| 5285 | if (PyObject_SetAttrString(self, "hresult", hresult) < 0) |
| 5286 | return NULL; |
| 5287 | |
| 5288 | if (PyObject_SetAttrString(self, "text", text) < 0) |
| 5289 | return NULL; |
| 5290 | |
| 5291 | if (PyObject_SetAttrString(self, "details", details) < 0) |
| 5292 | return NULL; |
| 5293 | |
| 5294 | Py_INCREF(Py_None); |
| 5295 | return Py_None; |
| 5296 | } |
| 5297 | |
| 5298 | static PyMethodDef comerror_methods[] = { |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5299 | { "__init__", comerror_init, METH_VARARGS }, |
| 5300 | { NULL, NULL }, |
| 5301 | }; |
| 5302 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5303 | static int |
| 5304 | create_comerror(void) |
| 5305 | { |
| 5306 | PyObject *dict = PyDict_New(); |
| 5307 | PyMethodDef *methods = comerror_methods; |
| 5308 | PyObject *s; |
| 5309 | int status; |
| 5310 | |
Thomas Heller | 55b8c3e | 2008-02-06 20:29:17 +0000 | [diff] [blame] | 5311 | if (dict == NULL) |
| 5312 | return -1; |
| 5313 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5314 | while (methods->ml_name) { |
| 5315 | /* get a wrapper for the built-in function */ |
| 5316 | PyObject *func = PyCFunction_New(methods, NULL); |
| 5317 | PyObject *meth; |
| 5318 | if (func == NULL) |
Thomas Heller | 55b8c3e | 2008-02-06 20:29:17 +0000 | [diff] [blame] | 5319 | goto error; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5320 | meth = PyMethod_New(func, NULL, ComError); |
| 5321 | Py_DECREF(func); |
| 5322 | if (meth == NULL) |
Thomas Heller | 55b8c3e | 2008-02-06 20:29:17 +0000 | [diff] [blame] | 5323 | goto error; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5324 | PyDict_SetItemString(dict, methods->ml_name, meth); |
| 5325 | Py_DECREF(meth); |
| 5326 | ++methods; |
| 5327 | } |
Thomas Heller | 1421b00 | 2007-07-13 13:59:39 +0000 | [diff] [blame] | 5328 | |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 5329 | s = PyString_FromString(comerror_doc); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5330 | if (s == NULL) |
Thomas Heller | 55b8c3e | 2008-02-06 20:29:17 +0000 | [diff] [blame] | 5331 | goto error; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5332 | status = PyDict_SetItemString(dict, "__doc__", s); |
| 5333 | Py_DECREF(s); |
Thomas Heller | 55b8c3e | 2008-02-06 20:29:17 +0000 | [diff] [blame] | 5334 | if (status == -1) |
| 5335 | goto error; |
Thomas Heller | 1421b00 | 2007-07-13 13:59:39 +0000 | [diff] [blame] | 5336 | |
| 5337 | ComError = PyErr_NewException("_ctypes.COMError", |
| 5338 | NULL, |
| 5339 | dict); |
| 5340 | if (ComError == NULL) |
Thomas Heller | 55b8c3e | 2008-02-06 20:29:17 +0000 | [diff] [blame] | 5341 | goto error; |
Thomas Heller | 1421b00 | 2007-07-13 13:59:39 +0000 | [diff] [blame] | 5342 | |
| 5343 | return 0; |
Thomas Heller | 55b8c3e | 2008-02-06 20:29:17 +0000 | [diff] [blame] | 5344 | error: |
| 5345 | Py_DECREF(dict); |
| 5346 | return -1; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5347 | } |
| 5348 | |
| 5349 | #endif |
| 5350 | |
| 5351 | static PyObject * |
Thomas Heller | c2f7725 | 2007-03-09 19:21:28 +0000 | [diff] [blame] | 5352 | string_at(const char *ptr, int size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5353 | { |
Thomas Heller | c2f7725 | 2007-03-09 19:21:28 +0000 | [diff] [blame] | 5354 | if (size == -1) |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 5355 | return PyString_FromString(ptr); |
| 5356 | return PyString_FromStringAndSize(ptr, size); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5357 | } |
| 5358 | |
Thomas Heller | b03cb60 | 2006-03-17 15:52:58 +0000 | [diff] [blame] | 5359 | static int |
| 5360 | cast_check_pointertype(PyObject *arg) |
| 5361 | { |
| 5362 | StgDictObject *dict; |
| 5363 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5364 | if (PyCPointerTypeObject_Check(arg)) |
Thomas Heller | b03cb60 | 2006-03-17 15:52:58 +0000 | [diff] [blame] | 5365 | return 1; |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5366 | if (PyCFuncPtrTypeObject_Check(arg)) |
Thomas Heller | 4b75a7c | 2006-04-21 16:48:56 +0000 | [diff] [blame] | 5367 | return 1; |
Thomas Heller | b03cb60 | 2006-03-17 15:52:58 +0000 | [diff] [blame] | 5368 | dict = PyType_stgdict(arg); |
| 5369 | if (dict) { |
Gregory P. Smith | dd96db6 | 2008-06-09 04:58:54 +0000 | [diff] [blame] | 5370 | if (PyString_Check(dict->proto) |
| 5371 | && (strchr("sPzUZXO", PyString_AS_STRING(dict->proto)[0]))) { |
Thomas Heller | b03cb60 | 2006-03-17 15:52:58 +0000 | [diff] [blame] | 5372 | /* simple pointer types, c_void_p, c_wchar_p, BSTR, ... */ |
| 5373 | return 1; |
| 5374 | } |
| 5375 | } |
| 5376 | PyErr_Format(PyExc_TypeError, |
| 5377 | "cast() argument 2 must be a pointer type, not %s", |
| 5378 | PyType_Check(arg) |
| 5379 | ? ((PyTypeObject *)arg)->tp_name |
Christian Heimes | e93237d | 2007-12-19 02:37:44 +0000 | [diff] [blame] | 5380 | : Py_TYPE(arg)->tp_name); |
Thomas Heller | b03cb60 | 2006-03-17 15:52:58 +0000 | [diff] [blame] | 5381 | return 0; |
| 5382 | } |
| 5383 | |
| 5384 | static PyObject * |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 5385 | cast(void *ptr, PyObject *src, PyObject *ctype) |
Thomas Heller | b03cb60 | 2006-03-17 15:52:58 +0000 | [diff] [blame] | 5386 | { |
| 5387 | CDataObject *result; |
| 5388 | if (0 == cast_check_pointertype(ctype)) |
| 5389 | return NULL; |
| 5390 | result = (CDataObject *)PyObject_CallFunctionObjArgs(ctype, NULL); |
| 5391 | if (result == NULL) |
| 5392 | return NULL; |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 5393 | |
| 5394 | /* |
| 5395 | The casted objects '_objects' member: |
| 5396 | |
| 5397 | It must certainly contain the source objects one. |
| 5398 | It must contain the source object itself. |
| 5399 | */ |
| 5400 | if (CDataObject_Check(src)) { |
| 5401 | CDataObject *obj = (CDataObject *)src; |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5402 | /* PyCData_GetContainer will initialize src.b_objects, we need |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 5403 | this so it can be shared */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5404 | PyCData_GetContainer(obj); |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 5405 | /* But we need a dictionary! */ |
| 5406 | if (obj->b_objects == Py_None) { |
| 5407 | Py_DECREF(Py_None); |
| 5408 | obj->b_objects = PyDict_New(); |
Thomas Heller | 3de83e9 | 2006-08-01 16:54:43 +0000 | [diff] [blame] | 5409 | if (obj->b_objects == NULL) |
| 5410 | goto failed; |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 5411 | } |
Thomas Heller | 2244af5 | 2006-09-07 19:09:54 +0000 | [diff] [blame] | 5412 | Py_XINCREF(obj->b_objects); |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 5413 | result->b_objects = obj->b_objects; |
Thomas Heller | d3ed492 | 2008-04-11 14:20:26 +0000 | [diff] [blame] | 5414 | if (result->b_objects && PyDict_CheckExact(result->b_objects)) { |
Thomas Heller | 3de83e9 | 2006-08-01 16:54:43 +0000 | [diff] [blame] | 5415 | PyObject *index; |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 5416 | int rc; |
Thomas Heller | 3de83e9 | 2006-08-01 16:54:43 +0000 | [diff] [blame] | 5417 | index = PyLong_FromVoidPtr((void *)src); |
| 5418 | if (index == NULL) |
| 5419 | goto failed; |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 5420 | rc = PyDict_SetItem(result->b_objects, index, src); |
| 5421 | Py_DECREF(index); |
Thomas Heller | 3de83e9 | 2006-08-01 16:54:43 +0000 | [diff] [blame] | 5422 | if (rc == -1) |
| 5423 | goto failed; |
Thomas Heller | 45f59ab | 2006-06-10 19:51:46 +0000 | [diff] [blame] | 5424 | } |
| 5425 | } |
Thomas Heller | b03cb60 | 2006-03-17 15:52:58 +0000 | [diff] [blame] | 5426 | /* Should we assert that result is a pointer type? */ |
| 5427 | memcpy(result->b_ptr, &ptr, sizeof(void *)); |
| 5428 | return (PyObject *)result; |
Thomas Heller | 3de83e9 | 2006-08-01 16:54:43 +0000 | [diff] [blame] | 5429 | |
| 5430 | failed: |
| 5431 | Py_DECREF(result); |
| 5432 | return NULL; |
Thomas Heller | b03cb60 | 2006-03-17 15:52:58 +0000 | [diff] [blame] | 5433 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5434 | |
| 5435 | #ifdef CTYPES_UNICODE |
| 5436 | static PyObject * |
| 5437 | wstring_at(const wchar_t *ptr, int size) |
| 5438 | { |
Thomas Heller | e81c9f6 | 2007-06-08 18:20:09 +0000 | [diff] [blame] | 5439 | Py_ssize_t ssize = size; |
| 5440 | if (ssize == -1) |
| 5441 | ssize = wcslen(ptr); |
| 5442 | return PyUnicode_FromWideChar(ptr, ssize); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5443 | } |
| 5444 | #endif |
| 5445 | |
Thomas Heller | fe8f862 | 2006-03-14 19:53:09 +0000 | [diff] [blame] | 5446 | PyMODINIT_FUNC |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5447 | init_ctypes(void) |
| 5448 | { |
| 5449 | PyObject *m; |
| 5450 | |
| 5451 | /* Note: |
| 5452 | ob_type is the metatype (the 'type'), defaults to PyType_Type, |
| 5453 | tp_base is the base type, defaults to 'object' aka PyBaseObject_Type. |
| 5454 | */ |
Thomas Heller | b4dc2ef | 2006-07-13 09:53:47 +0000 | [diff] [blame] | 5455 | #ifdef WITH_THREAD |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5456 | PyEval_InitThreads(); |
Thomas Heller | bde0813 | 2006-06-29 18:34:15 +0000 | [diff] [blame] | 5457 | #endif |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5458 | m = Py_InitModule3("_ctypes", _ctypes_module_methods, module_docs); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5459 | if (!m) |
| 5460 | return; |
| 5461 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5462 | _ctypes_ptrtype_cache = PyDict_New(); |
| 5463 | if (_ctypes_ptrtype_cache == NULL) |
Thomas Heller | 046e6a4 | 2008-04-14 16:10:07 +0000 | [diff] [blame] | 5464 | return; |
| 5465 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5466 | PyModule_AddObject(m, "_pointer_type_cache", (PyObject *)_ctypes_ptrtype_cache); |
Thomas Heller | 046e6a4 | 2008-04-14 16:10:07 +0000 | [diff] [blame] | 5467 | |
Thomas Heller | a06a1a8 | 2008-02-13 20:21:53 +0000 | [diff] [blame] | 5468 | _unpickle = PyObject_GetAttrString(m, "_unpickle"); |
| 5469 | if (_unpickle == NULL) |
| 5470 | return; |
| 5471 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5472 | if (PyType_Ready(&PyCArg_Type) < 0) |
| 5473 | return; |
| 5474 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5475 | if (PyType_Ready(&PyCThunk_Type) < 0) |
Thomas Heller | bf027c4 | 2008-04-24 18:14:19 +0000 | [diff] [blame] | 5476 | return; |
| 5477 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5478 | /* StgDict is derived from PyDict_Type */ |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5479 | PyCStgDict_Type.tp_base = &PyDict_Type; |
| 5480 | if (PyType_Ready(&PyCStgDict_Type) < 0) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5481 | return; |
| 5482 | |
| 5483 | /************************************************* |
| 5484 | * |
| 5485 | * Metaclasses |
| 5486 | */ |
| 5487 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5488 | PyCStructType_Type.tp_base = &PyType_Type; |
| 5489 | if (PyType_Ready(&PyCStructType_Type) < 0) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5490 | return; |
| 5491 | |
| 5492 | UnionType_Type.tp_base = &PyType_Type; |
| 5493 | if (PyType_Ready(&UnionType_Type) < 0) |
| 5494 | return; |
| 5495 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5496 | PyCPointerType_Type.tp_base = &PyType_Type; |
| 5497 | if (PyType_Ready(&PyCPointerType_Type) < 0) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5498 | return; |
| 5499 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5500 | PyCArrayType_Type.tp_base = &PyType_Type; |
| 5501 | if (PyType_Ready(&PyCArrayType_Type) < 0) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5502 | return; |
| 5503 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5504 | PyCSimpleType_Type.tp_base = &PyType_Type; |
| 5505 | if (PyType_Ready(&PyCSimpleType_Type) < 0) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5506 | return; |
| 5507 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5508 | PyCFuncPtrType_Type.tp_base = &PyType_Type; |
| 5509 | if (PyType_Ready(&PyCFuncPtrType_Type) < 0) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5510 | return; |
| 5511 | |
| 5512 | /************************************************* |
| 5513 | * |
| 5514 | * Classes using a custom metaclass |
| 5515 | */ |
| 5516 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5517 | if (PyType_Ready(&PyCData_Type) < 0) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5518 | return; |
| 5519 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5520 | Py_TYPE(&Struct_Type) = &PyCStructType_Type; |
| 5521 | Struct_Type.tp_base = &PyCData_Type; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5522 | if (PyType_Ready(&Struct_Type) < 0) |
| 5523 | return; |
| 5524 | PyModule_AddObject(m, "Structure", (PyObject *)&Struct_Type); |
| 5525 | |
Christian Heimes | e93237d | 2007-12-19 02:37:44 +0000 | [diff] [blame] | 5526 | Py_TYPE(&Union_Type) = &UnionType_Type; |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5527 | Union_Type.tp_base = &PyCData_Type; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5528 | if (PyType_Ready(&Union_Type) < 0) |
| 5529 | return; |
| 5530 | PyModule_AddObject(m, "Union", (PyObject *)&Union_Type); |
| 5531 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5532 | Py_TYPE(&PyCPointer_Type) = &PyCPointerType_Type; |
| 5533 | PyCPointer_Type.tp_base = &PyCData_Type; |
| 5534 | if (PyType_Ready(&PyCPointer_Type) < 0) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5535 | return; |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5536 | PyModule_AddObject(m, "_Pointer", (PyObject *)&PyCPointer_Type); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5537 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5538 | Py_TYPE(&PyCArray_Type) = &PyCArrayType_Type; |
| 5539 | PyCArray_Type.tp_base = &PyCData_Type; |
| 5540 | if (PyType_Ready(&PyCArray_Type) < 0) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5541 | return; |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5542 | PyModule_AddObject(m, "Array", (PyObject *)&PyCArray_Type); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5543 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5544 | Py_TYPE(&Simple_Type) = &PyCSimpleType_Type; |
| 5545 | Simple_Type.tp_base = &PyCData_Type; |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5546 | if (PyType_Ready(&Simple_Type) < 0) |
| 5547 | return; |
| 5548 | PyModule_AddObject(m, "_SimpleCData", (PyObject *)&Simple_Type); |
| 5549 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5550 | Py_TYPE(&PyCFuncPtr_Type) = &PyCFuncPtrType_Type; |
| 5551 | PyCFuncPtr_Type.tp_base = &PyCData_Type; |
| 5552 | if (PyType_Ready(&PyCFuncPtr_Type) < 0) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5553 | return; |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5554 | PyModule_AddObject(m, "CFuncPtr", (PyObject *)&PyCFuncPtr_Type); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5555 | |
| 5556 | /************************************************* |
| 5557 | * |
| 5558 | * Simple classes |
| 5559 | */ |
| 5560 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5561 | /* PyCField_Type is derived from PyBaseObject_Type */ |
| 5562 | if (PyType_Ready(&PyCField_Type) < 0) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5563 | return; |
| 5564 | |
| 5565 | /************************************************* |
| 5566 | * |
| 5567 | * Other stuff |
| 5568 | */ |
| 5569 | |
Thomas Heller | e4c03e4 | 2008-01-24 18:36:27 +0000 | [diff] [blame] | 5570 | DictRemover_Type.tp_new = PyType_GenericNew; |
| 5571 | if (PyType_Ready(&DictRemover_Type) < 0) |
| 5572 | return; |
| 5573 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5574 | #ifdef MS_WIN32 |
| 5575 | if (create_comerror() < 0) |
| 5576 | return; |
| 5577 | PyModule_AddObject(m, "COMError", ComError); |
| 5578 | |
| 5579 | PyModule_AddObject(m, "FUNCFLAG_HRESULT", PyInt_FromLong(FUNCFLAG_HRESULT)); |
| 5580 | PyModule_AddObject(m, "FUNCFLAG_STDCALL", PyInt_FromLong(FUNCFLAG_STDCALL)); |
| 5581 | #endif |
| 5582 | PyModule_AddObject(m, "FUNCFLAG_CDECL", PyInt_FromLong(FUNCFLAG_CDECL)); |
Thomas Heller | fbb9c0b | 2008-06-06 08:33:46 +0000 | [diff] [blame] | 5583 | PyModule_AddObject(m, "FUNCFLAG_USE_ERRNO", PyInt_FromLong(FUNCFLAG_USE_ERRNO)); |
| 5584 | PyModule_AddObject(m, "FUNCFLAG_USE_LASTERROR", PyInt_FromLong(FUNCFLAG_USE_LASTERROR)); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5585 | PyModule_AddObject(m, "FUNCFLAG_PYTHONAPI", PyInt_FromLong(FUNCFLAG_PYTHONAPI)); |
Thomas Heller | 9ae562e | 2007-01-10 20:51:19 +0000 | [diff] [blame] | 5586 | PyModule_AddStringConstant(m, "__version__", "1.1.0"); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5587 | |
| 5588 | PyModule_AddObject(m, "_memmove_addr", PyLong_FromVoidPtr(memmove)); |
| 5589 | PyModule_AddObject(m, "_memset_addr", PyLong_FromVoidPtr(memset)); |
| 5590 | PyModule_AddObject(m, "_string_at_addr", PyLong_FromVoidPtr(string_at)); |
Thomas Heller | b03cb60 | 2006-03-17 15:52:58 +0000 | [diff] [blame] | 5591 | PyModule_AddObject(m, "_cast_addr", PyLong_FromVoidPtr(cast)); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5592 | #ifdef CTYPES_UNICODE |
| 5593 | PyModule_AddObject(m, "_wstring_at_addr", PyLong_FromVoidPtr(wstring_at)); |
| 5594 | #endif |
| 5595 | |
Thomas Heller | fff61ea | 2006-04-06 15:23:16 +0000 | [diff] [blame] | 5596 | /* If RTLD_LOCAL is not defined (Windows!), set it to zero. */ |
| 5597 | #ifndef RTLD_LOCAL |
| 5598 | #define RTLD_LOCAL 0 |
| 5599 | #endif |
| 5600 | |
| 5601 | /* If RTLD_GLOBAL is not defined (cygwin), set it to the same value as |
| 5602 | RTLD_LOCAL. |
| 5603 | */ |
| 5604 | #ifndef RTLD_GLOBAL |
| 5605 | #define RTLD_GLOBAL RTLD_LOCAL |
| 5606 | #endif |
| 5607 | |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5608 | PyModule_AddObject(m, "RTLD_LOCAL", PyInt_FromLong(RTLD_LOCAL)); |
| 5609 | PyModule_AddObject(m, "RTLD_GLOBAL", PyInt_FromLong(RTLD_GLOBAL)); |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5610 | |
| 5611 | PyExc_ArgError = PyErr_NewException("ctypes.ArgumentError", NULL, NULL); |
| 5612 | if (PyExc_ArgError) { |
| 5613 | Py_INCREF(PyExc_ArgError); |
| 5614 | PyModule_AddObject(m, "ArgumentError", PyExc_ArgError); |
| 5615 | } |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5616 | } |
| 5617 | |
| 5618 | /***************************************************************** |
Thomas Heller | 9f90247 | 2006-07-14 15:01:05 +0000 | [diff] [blame] | 5619 | * replacements for broken Python api functions (in Python 2.3). |
| 5620 | * See #1047269 Buffer overwrite in PyUnicode_AsWideChar |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5621 | */ |
| 5622 | |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5623 | #if (PY_VERSION_HEX < 0x02040000) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5624 | #ifdef HAVE_WCHAR_H |
| 5625 | |
| 5626 | PyObject *My_PyUnicode_FromWideChar(register const wchar_t *w, |
Thomas Heller | 9f90247 | 2006-07-14 15:01:05 +0000 | [diff] [blame] | 5627 | Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5628 | { |
| 5629 | PyUnicodeObject *unicode; |
| 5630 | |
| 5631 | if (w == NULL) { |
| 5632 | PyErr_BadInternalCall(); |
| 5633 | return NULL; |
| 5634 | } |
| 5635 | |
| 5636 | unicode = (PyUnicodeObject *)PyUnicode_FromUnicode(NULL, size); |
| 5637 | if (!unicode) |
| 5638 | return NULL; |
| 5639 | |
| 5640 | /* Copy the wchar_t data into the new object */ |
| 5641 | #ifdef HAVE_USABLE_WCHAR_T |
| 5642 | memcpy(unicode->str, w, size * sizeof(wchar_t)); |
| 5643 | #else |
| 5644 | { |
| 5645 | register Py_UNICODE *u; |
| 5646 | register int i; |
| 5647 | u = PyUnicode_AS_UNICODE(unicode); |
| 5648 | /* In Python, the following line has a one-off error */ |
| 5649 | for (i = size; i > 0; i--) |
| 5650 | *u++ = *w++; |
| 5651 | } |
| 5652 | #endif |
| 5653 | |
| 5654 | return (PyObject *)unicode; |
| 5655 | } |
| 5656 | |
Thomas Heller | e81c9f6 | 2007-06-08 18:20:09 +0000 | [diff] [blame] | 5657 | Py_ssize_t My_PyUnicode_AsWideChar(PyUnicodeObject *unicode, |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5658 | register wchar_t *w, |
Thomas Heller | 9f90247 | 2006-07-14 15:01:05 +0000 | [diff] [blame] | 5659 | Py_ssize_t size) |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5660 | { |
| 5661 | if (unicode == NULL) { |
| 5662 | PyErr_BadInternalCall(); |
| 5663 | return -1; |
| 5664 | } |
| 5665 | if (size > PyUnicode_GET_SIZE(unicode)) |
| 5666 | size = PyUnicode_GET_SIZE(unicode); |
| 5667 | #ifdef HAVE_USABLE_WCHAR_T |
| 5668 | memcpy(w, unicode->str, size * sizeof(wchar_t)); |
| 5669 | #else |
| 5670 | { |
| 5671 | register Py_UNICODE *u; |
| 5672 | register int i; |
| 5673 | u = PyUnicode_AS_UNICODE(unicode); |
| 5674 | /* In Python, the following line has a one-off error */ |
| 5675 | for (i = size; i > 0; i--) |
| 5676 | *w++ = *u++; |
| 5677 | } |
| 5678 | #endif |
| 5679 | |
| 5680 | return size; |
| 5681 | } |
Thomas Heller | 5c6af80 | 2009-04-24 20:31:47 +0000 | [diff] [blame] | 5682 | #endif |
Thomas Heller | d4c9320 | 2006-03-08 19:35:11 +0000 | [diff] [blame] | 5683 | #endif |
| 5684 | |
| 5685 | /* |
| 5686 | Local Variables: |
| 5687 | compile-command: "cd .. && python setup.py -q build -g && python setup.py -q build install --home ~" |
| 5688 | End: |
| 5689 | */ |