Source

pyobjc / pyobjc-core / Modules / objc / pyobjc-api.h

Full commit
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
#ifndef PyObjC_API_H
#define PyObjC_API_H

/*
 * Use this in helper modules for the objc package, and in wrappers
 * for functions that deal with objective-C objects/classes
 * 
 * This header defines some utility wrappers for importing and using 
 * the core bridge. 
 *
 * This is the *only* header file that should be used to access 
 * functionality in the core bridge.
 *
 * WARNING: this file is not part of the public interface of PyObjC and
 * might change or be removed without warning or regard for backward
 * compatibility.
 */

#include <objc/objc.h>

#import <Foundation/Foundation.h>

#include "pyobjc-compat.h"

#ifndef CGFLOAT_DEFINED

#ifdef __LP64__
# error "Huh? 64-bit but no CFFloat available???"
#endif

typedef float CGFloat;
#define CGFLOAT_MIN FLT_MIN
#define CGFLOAT_MAX FLT_MAX
#define CGFLOAT_IS_DOUBLE 0
#define CGFLOAT_DEFINED

#endif /* CGFLOAT_DEFINED */


#ifndef NSINTEGER_DEFINED

#ifdef __LP64__
# error "Huh? 64-bit but no NSINTEGER available???"
#endif

typedef int NSInteger;
typedef unsigned int NSUInteger;

#define NSIntegerMax    LONG_MAX
#define NSIntegerMin    LONG_MIN
#define NSUIntegerMax   ULONG_MAX

#define NSINTEGER_DEFINED

#endif


#import <Foundation/NSException.h>

struct PyObjC_WeakLink {
	const char* name;
	void (*func)(void);
};


/* threading support */
#ifdef NO_OBJC2_RUNTIME
#define PyObjC_DURING \
		Py_BEGIN_ALLOW_THREADS \
		NS_DURING

#define PyObjC_HANDLER NS_HANDLER

#define PyObjC_ENDHANDLER \
		NS_ENDHANDLER \
		Py_END_ALLOW_THREADS
#else

#define	PyObjC_DURING \
		Py_BEGIN_ALLOW_THREADS \
		@try {

#define PyObjC_HANDLER } @catch(volatile NSObject* _localException) { \
		NSException* localException __attribute__((__unused__))= (NSException*)_localException;

#define PyObjC_ENDHANDLER \
		} \
		Py_END_ALLOW_THREADS

#endif

#define PyObjC_BEGIN_WITH_GIL \
	{ \
		PyGILState_STATE _GILState; \
		_GILState = PyGILState_Ensure(); 

#define PyObjC_GIL_FORWARD_EXC() \
		do { \
            PyObjCErr_ToObjCWithGILState(&_GILState); \
		} while (0)


#define PyObjC_GIL_RETURN(val) \
		do { \
			PyGILState_Release(_GILState); \
			return (val); \
		} while (0)

#define PyObjC_GIL_RETURNVOID \
		do { \
			PyGILState_Release(_GILState); \
			return; \
		} while (0)


#define PyObjC_END_WITH_GIL \
		PyGILState_Release(_GILState); \
	}



#include <objc/objc-runtime.h>

/* On 10.1 there are no defines for the OS version. */
#ifndef MAC_OS_X_VERSION_10_1
#define MAC_OS_X_VERSION_10_1 1010
#define MAC_OS_X_VERSION_MAX_ALLOWED MAC_OS_X_VERSION_10_1

#error "MAC_OS_X_VERSION_10_1 not defined. You aren't running 10.1 are you?"

#endif

#ifndef MAC_OS_X_VERSION_10_2
#define MAC_OS_X_VERSION_10_2 1020
#endif

#ifndef MAC_OS_X_VERSION_10_3
#define MAC_OS_X_VERSION_10_3 1030
#endif

#ifndef MAC_OS_X_VERSION_10_4
#define MAC_OS_X_VERSION_10_4 1040
#endif

#ifndef MAC_OS_X_VERSION_10_5
#define MAC_OS_X_VERSION_10_5 1050
#endif

/* Current API version, increase whenever:
 * - Semantics of current functions change
 * - Functions are removed
 * Do not increase when adding a new function, the struct_len field
 * can be used for detecting if a function has been added.
 *
 * HISTORY:
 * - Version 2.2 adds PyObjCUnsupportedMethod_IMP 
 *       and PyObjCUnsupportedMethod_Caller 
 * - Version 2.1 adds PyObjCPointerWrapper_Register 
 * - Version 2 adds an argument to PyObjC_InitSuper
 * - Version 3 adds another argument to PyObjC_CallPython
 * - Version 4 adds PyObjCErr_ToObjCGILState
 * - Version 4.1 adds PyObjCRT_AlignOfType and PyObjCRT_SizeOfType
 *         (PyObjC_SizeOfType is now deprecated)
 * - Version 4.2 adds PyObjCRT_SELName
 * - Version 4.3 adds PyObjCRT_SimplifySignature
 * - Version 4.4 adds PyObjC_FreeCArray, PyObjC_PythonToCArray and
 *   		PyObjC_CArrayToPython
 * - Version 5 modifies the signature for PyObjC_RegisterMethodMapping,
 *	PyObjC_RegisterSignatureMapping and PyObjCUnsupportedMethod_IMP,
 *      adds PyObjC_RegisterStructType and removes PyObjC_CallPython
 * - Version 6 adds PyObjCIMP_Type, PyObjCIMP_GetIMP and PyObjCIMP_GetSelector
 * - Version 7 adds PyObjCErr_AsExc, PyGILState_Ensure
 * - Version 8 adds PyObjCObject_IsUninitialized,
        removes PyObjCSelector_IsInitializer
 * - Version 9 (???)
 * - Version 10 changes the signature of PyObjCRT_SimplifySignature
 * - Version 11 adds PyObjCObject_Convert, PyObjCSelector_Convert,
     PyObjCClass_Convert, PyObjC_ConvertBOOL, and PyObjC_ConvertChar
 * - Version 12 adds PyObjCObject_New
 * - Version 13 adds PyObjCCreateOpaquePointerType
 * - Version 14 adds PyObjCObject_NewTransient, PyObjCObject_ReleaseTransient
 * - Version 15 changes the interface of PyObjCObject_New
 * - Version 16 adds PyObjC_PerformWeaklinking
 * - Version 17 introduces Py_ssize_t support
 * - Version 18 introduces several API incompatibilities
 * - Version 19 removes some old junk
 */
#define PYOBJC_API_VERSION 19

#define PYOBJC_API_NAME "__C_API__"

/* 
 * Only add items to the end of this list!
 */
typedef int (RegisterMethodMappingFunctionType)(
			Class, 
			SEL, 
			PyObject *(*)(PyObject*, PyObject*, PyObject*),
			void (*)(void*, void*, void**, void*));

struct pyobjc_api {
	int	      api_version;	/* API version */
	size_t	      struct_len;	/* Length of this struct */
	PyTypeObject* class_type;	/* PyObjCClass_Type    */
	PyTypeObject* object_type;	/* PyObjCObject_Type   */
	PyTypeObject* select_type;	/* PyObjCSelector_Type */

	/* PyObjC_RegisterMethodMapping */
	RegisterMethodMappingFunctionType *register_method_mapping;

	/* PyObjC_RegisterSignatureMapping */
	int (*register_signature_mapping)(
			char*,
			PyObject *(*)(PyObject*, PyObject*, PyObject*),
			void (*)(void*, void*, void**, void*));

	/* PyObjCObject_GetObject */
	id (*obj_get_object)(PyObject*);

	/* PyObjCObject_ClearObject */
	void (*obj_clear_object)(PyObject*);

	/* PyObjCClass_GetClass */
	Class (*cls_get_class)(PyObject*);

	/* PyObjCClass_New */
	PyObject* (*cls_to_python)(Class cls);

	/* PyObjC_PythonToId */
	id (*python_to_id)(PyObject*);

	/* PyObjC_IdToPython */
	PyObject* (*id_to_python)(id);

	/* PyObjCErr_FromObjC */
	void (*err_objc_to_python)(NSException*);

	/* PyObjCErr_ToObjC */
	void (*err_python_to_objc)(void);

	/* PyObjC_PythonToObjC */
	int (*py_to_objc)(const char*, PyObject*, void*);

	/* PyObjC_ObjCToPython */
	PyObject* (*objc_to_py)(const char*, void*);

	/* PyObjC_SizeOfType */
	Py_ssize_t   (*sizeof_type)(const char*);

	/* PyObjCSelector_GetClass */
	Class	   (*sel_get_class)(PyObject* sel);

	/* PyObjCSelector_GetSelector */
	SEL	   (*sel_get_sel)(PyObject* sel);

	/* PyObjC_InitSuper */ 	
	void	(*fill_super)(struct objc_super*, Class, id);

	/* PyObjC_InitSuperCls */
	void	(*fill_super_cls)(struct objc_super*, Class, Class);

	/* PyObjCPointerWrapper_Register */ 
	int  (*register_pointer_wrapper)(
		        const char*, PyObject* (*pythonify)(void*),
			int (*depythonify)(PyObject*, void*)
		);

	void (*unsupported_method_imp)(void*, void*, void**, void*);
	PyObject* (*unsupported_method_caller)(PyObject*, PyObject*, PyObject*);

	/* PyObjCErr_ToObjCWithGILState */
	void (*err_python_to_objc_gil)(PyGILState_STATE* state);

	/* PyObjCRT_AlignOfType */
	Py_ssize_t (*alignof_type)(const char* typestr);

	/* PyObjCRT_SELName */
	const char* (*selname)(SEL sel);

	/* PyObjCRT_SimplifySignature */
	int (*simplify_sig)(const char* signature, char* buf, size_t buflen);

	/* PyObjC_FreeCArray */
	void    (*free_c_array)(int,void*);

	/* PyObjC_PythonToCArray */
	int     (*py_to_c_array)(BOOL, BOOL, const char*, PyObject*, void**, Py_ssize_t*, PyObject**);
	
	/* PyObjC_CArrayToPython */
	PyObject* (*c_array_to_py)(const char*, void*, Py_ssize_t);

	/* PyObjC_RegisterStructType */
	PyObject* (*register_struct)(const char*, const char*, const char*, initproc, Py_ssize_t, const char**, Py_ssize_t);

	/* PyObjCIMP_Type */
	PyTypeObject* imp_type;

	/* PyObjCIMP_GetIMP */
	IMP  (*imp_get_imp)(PyObject*);

	/* PyObjCIMP_GetSelector */
	SEL  (*imp_get_sel)(PyObject*);

	/* PyObjCErr_AsExc */
	NSException* (*err_python_to_nsexception)(void);

	/* PyGILState_Ensure */
	PyGILState_STATE (*gilstate_ensure)(void);

	/* PyObjCObject_IsUninitialized */
	int (*obj_is_uninitialized)(PyObject*);

	/* PyObjCObject_New */
	PyObject* (*pyobjc_object_new)(id, int , int);

	/* PyObjCCreateOpaquePointerType */
	PyObject* (*pointer_type_new)(const char*, const char*, const char*);

	/* PyObject* PyObjCObject_NewTransient(id objc_object, int* cookie); */
	PyObject* (*newtransient)(id objc_object, int* cookie);

	/* void PyObjCObject_ReleaseTransient(PyObject* proxy, int cookie); */
	void (*releasetransient)(PyObject* proxy, int cookie);

	void (*doweaklink)(PyObject*, struct PyObjC_WeakLink*);

	const char* (*removefields)(char*, const char*);

	PyObject** pyobjc_null;

	int (*dep_c_array_count)(const char* type, Py_ssize_t count, BOOL strict, PyObject* value, void* datum);

	PyObject* (*varlistnew)(const char* tp, void* array);

	int (*is_ascii_string)(PyObject* unicode_string, const char* ascii_string);
	int (*is_ascii_prefix)(PyObject* unicode_string, const char* ascii_string, size_t n);

	int (*pyobjcobject_convert)(PyObject*,void*);
};

#ifndef PYOBJC_BUILD

#ifndef PYOBJC_METHOD_STUB_IMPL
static struct pyobjc_api*	PyObjC_API;
#endif /* PYOBJC_METHOD_STUB_IMPL */

#define PyObjC_is_ascii_string (PyObjC_API->is_ascii_string)
#define PyObjC_is_ascii_prefix (PyObjC_API->is_ascii_prefix)

#define PyObjCObject_Check(obj) PyObject_TypeCheck(obj, PyObjC_API->object_type)
#define PyObjCClass_Check(obj)  PyObject_TypeCheck(obj, PyObjC_API->class_type)
#define PyObjCSelector_Check(obj)  PyObject_TypeCheck(obj, PyObjC_API->select_type)
#define PyObjCIMP_Check(obj)  PyObject_TypeCheck(obj, PyObjC_API->imp_type)
#define PyObjCObject_GetObject (PyObjC_API->obj_get_object)
#define PyObjCObject_ClearObject (PyObjC_API->obj_clear_object)
#define PyObjCClass_GetClass   (PyObjC_API->cls_get_class)
#define PyObjCClass_New 	     (PyObjC_API->cls_to_python)
#define PyObjCSelector_GetClass (PyObjC_API->sel_get_class)
#define PyObjCSelector_GetSelector (PyObjC_API->sel_get_sel)
#define PyObjC_PythonToId      (PyObjC_API->python_to_id)
#define PyObjC_IdToPython      (PyObjC_API->id_to_python)
#define PyObjCErr_FromObjC     (PyObjC_API->err_objc_to_python)
#define PyObjCErr_ToObjC       (PyObjC_API->err_python_to_objc)
#define PyObjCErr_ToObjCWithGILState       (PyObjC_API->err_python_to_objc_gil)
#define PyObjCErr_AsExc        (PyObjC_API->err_python_to_nsexception)
#define PyObjC_PythonToObjC    (PyObjC_API->py_to_objc)
#define PyObjC_ObjCToPython    (PyObjC_API->objc_to_py)
#define PyObjC_RegisterMethodMapping (PyObjC_API->register_method_mapping)
#define PyObjC_RegisterSignatureMapping (PyObjC_API->register_signature_mapping)
#define PyObjC_SizeOfType      (PyObjC_API->sizeof_type)
#define PyObjC_PythonToObjC   (PyObjC_API->py_to_objc)
#define PyObjC_ObjCToPython   (PyObjC_API->objc_to_py)
#define PyObjC_InitSuper	(PyObjC_API->fill_super)
#define PyObjC_InitSuperCls	(PyObjC_API->fill_super_cls)
#define PyObjCPointerWrapper_Register (PyObjC_API->register_pointer_wrapper)
#define PyObjCUnsupportedMethod_IMP (PyObjC_API->unsupported_method_imp)
#define PyObjCUnsupportedMethod_Caller (PyObjC_API->unsupported_method_caller)
#define PyObjCRT_SizeOfType      (PyObjC_API->sizeof_type)
#define PyObjCRT_AlignOfType	(PyObjC_API->alignof_type)
#define PyObjCRT_SELName	(PyObjC_API->selname)
#define PyObjCRT_SimplifySignature	(PyObjC_API->simplify_sig)
#define PyObjC_FreeCArray	(PyObjC_API->free_c_array)
#define PyObjC_PythonToCArray	(PyObjC_API->py_to_c_array)
#define PyObjC_CArrayToPython	(PyObjC_API->c_array_to_py)
#define PyObjC_RegisterStructType   (PyObjC_API->register_struct)
#define PyObjCIMP_GetIMP   (PyObjC_API->imp_get_imp)
#define PyObjCIMP_GetSelector   (PyObjC_API->imp_get_sel)
#define PyObjCObject_IsUninitialized (PyObjC_API->obj_is_uninitialized)
#define PyObjCObject_New (PyObjC_API->pyobjc_object_new)
#define PyObjCCreateOpaquePointerType (PyObjC_API->pointer_type_new)
#define PyObjCObject_NewTransient (PyObjC_API->newtransient)
#define PyObjCObject_ReleaseTransient (PyObjC_API->releasetransient)
#define PyObjC_PerformWeaklinking (PyObjC_API->doweaklink)
#define PyObjCRT_RemoveFieldNames (PyObjC_API->removefields)
#define PyObjC_NULL		  (*(PyObjC_API->pyobjc_null))
#define PyObjC_DepythonifyCArray  (PyObjC_API->dep_c_array_count)
#define PyObjC_VarList_New  (PyObjC_API->varlistnew)
#define PyObjCObject_Convert (PyObjC_API->pyobjcobject_convert)

typedef void (*PyObjC_Function_Pointer)(void);

typedef struct PyObjC_function_map {
    const char* 		name;
    PyObjC_Function_Pointer     function;
} PyObjC_function_map;



#ifndef PYOBJC_METHOD_STUB_IMPL

static inline PyObject*
PyObjC_CreateInlineTab(PyObjC_function_map* map)
{
#if PY_MAJOR_VERSION == 2 && PY_MINOR_VERSION < 7
	return PyCObject_FromVoidPtr(map, NULL);
#else
	return PyCapsule_New(map, "objc.__inline__", NULL);
#endif
}

static inline int
PyObjC_ImportAPI(PyObject* calling_module)
{
	PyObject* m;
	PyObject* d;
	PyObject* api_obj;
#if PY_MAJOR_VERSION == 2
	PyObject* name = PyString_FromString("objc");
#else
	PyObject* name = PyUnicode_FromString("objc");
#endif
	
	m = PyImport_Import(name);
	Py_DECREF(name);
	if (m == NULL) {
		return -1;
	}

	d = PyModule_GetDict(m);
	if (d == NULL) {
		PyErr_SetString(PyExc_RuntimeError, 
			"No dict in objc module");
		return -1;
	}

	api_obj = PyDict_GetItemString(d, PYOBJC_API_NAME);
	if (api_obj == NULL) {
		PyErr_SetString(PyExc_RuntimeError, 
			"No C_API in objc module");
		return -1;
	}
#if PY_MAJOR_VERSION == 2 && PY_VERSION_MAJOR < 7
	PyObjC_API = PyCObject_AsVoidPtr(api_obj);
#else
	PyObjC_API = PyCapsule_GetPointer(api_obj, "objc." PYOBJC_API_NAME);
#endif
	if (PyObjC_API == NULL) {
		return 0;
	}
	if (PyObjC_API->api_version != PYOBJC_API_VERSION) {
		PyErr_SetString(PyExc_RuntimeError,
			"Wrong version of PyObjC C API");
		return -1;
	}
	
	if (PyObjC_API->struct_len < sizeof(struct pyobjc_api)) {
		PyErr_SetString(PyExc_RuntimeError,
			"Wrong struct-size of PyObjC C API");
		return -1;
	}

	Py_INCREF(api_obj);

	/* Current pyobjc implementation doesn't allow deregistering 
	 * information, avoid unloading of users of the C-API.
	 * (Yes this is ugle, patches to fix this situation are apriciated)
	 */
	Py_INCREF(calling_module);

	return 0;
}
#endif /* PYOBJC_METHOD_STUB_IMPL */

#else /* PyObjC_BUILD */

extern struct pyobjc_api	objc_api;

#endif /* !PYOBJC_BUILD */

/*
 * Helper macros to simplify module init functions.
 */
#define PyObjC__STR(x) #x
#define PyObjC_STR(x) PyObjC__STR(x)

#if PY_MAJOR_VERSION == 3

#define PyObjC_INITERROR() return NULL
#define PyObjC_INITDONE() return m


#define PyObjC_MODULE_INIT(name) \
	static struct PyModuleDef mod_module = { \
		PyModuleDef_HEAD_INIT, \
	 	PyObjC_STR(name), \
		NULL, \
		0, \
		mod_methods, \
		NULL, \
		NULL, \
		NULL, \
		NULL \
	}; \
	\
	PyObject* PyInit_##name(void); \
	PyObject* PyInit_##name(void)

#define PyObjC_MODULE_CREATE(name) \
	PyModule_Create(&mod_module);

#else

#define PyObjC_INITERROR() return
#define PyObjC_INITDONE() return

#define PyObjC_MODULE_INIT(name) \
	void init##name(void); \
	void init##name(void)

#define PyObjC_MODULE_CREATE(name) \
	Py_InitModule4(PyObjC_STR(name), mod_methods, \
			NULL, NULL, PYTHON_API_VERSION);

#endif

#endif /*  PyObjC_API_H */