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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙimport unittest, sys from ctypes import * import _ctypes_test ctype_types = [c_byte, c_ubyte, c_short, c_ushort, c_int, c_uint, c_long, c_ulong, c_longlong, c_ulonglong, c_double, c_float] python_types = [int, int, int, int, int, int, int, int, int, int, float, float] class PointersTestCase(unittest.TestCase): def test_pointer_crash(self): class A(POINTER(c_ulong)): pass POINTER(c_ulong)(c_ulong(22)) # Pointer can't set contents: has no _type_ self.assertRaises(TypeError, A, c_ulong(33)) def test_pass_pointers(self): dll = CDLL(_ctypes_test.__file__) func = dll._testfunc_p_p if sizeof(c_longlong) == sizeof(c_void_p): func.restype = c_longlong else: func.restype = c_long i = c_int(12345678) ## func.argtypes = (POINTER(c_int),) address = func(byref(i)) self.assertEqual(c_int.from_address(address).value, 12345678) func.restype = POINTER(c_int) res = func(pointer(i)) self.assertEqual(res.contents.value, 12345678) self.assertEqual(res[0], 12345678) def test_change_pointers(self): dll = CDLL(_ctypes_test.__file__) func = dll._testfunc_p_p i = c_int(87654) func.restype = POINTER(c_int) func.argtypes = (POINTER(c_int),) res = func(pointer(i)) self.assertEqual(res[0], 87654) self.assertEqual(res.contents.value, 87654) # C code: *res = 54345 res[0] = 54345 self.assertEqual(i.value, 54345) # C code: # int x = 12321; # res = &x x = c_int(12321) res.contents = x self.assertEqual(i.value, 54345) x.value = -99 self.assertEqual(res.contents.value, -99) def test_callbacks_with_pointers(self): # a function type receiving a pointer PROTOTYPE = CFUNCTYPE(c_int, POINTER(c_int)) self.result = [] def func(arg): for i in range(10): ## print arg[i], self.result.append(arg[i]) ## print return 0 callback = PROTOTYPE(func) dll = CDLL(_ctypes_test.__file__) # This function expects a function pointer, # and calls this with an integer pointer as parameter. # The int pointer points to a table containing the numbers 1..10 doit = dll._testfunc_callback_with_pointer ## i = c_int(42) ## callback(byref(i)) ## self.assertEqual(i.value, 84) doit(callback) ## print self.result doit(callback) ## print self.result def test_basics(self): from operator import delitem for ct, pt in zip(ctype_types, python_types): i = ct(42) p = pointer(i) ## print type(p.contents), ct self.assertIs(type(p.contents), ct) # p.contents is the same as p[0] ## print p.contents ## self.assertEqual(p.contents, 42) ## self.assertEqual(p[0], 42) self.assertRaises(TypeError, delitem, p, 0) def test_from_address(self): from array import array a = array('i', [100, 200, 300, 400, 500]) addr = a.buffer_info()[0] p = POINTER(POINTER(c_int)) ## print dir(p) ## print p.from_address ## print p.from_address(addr)[0][0] def test_other(self): class Table(Structure): _fields_ = [("a", c_int), ("b", c_int), ("c", c_int)] pt = pointer(Table(1, 2, 3)) self.assertEqual(pt.contents.a, 1) self.assertEqual(pt.contents.b, 2) self.assertEqual(pt.contents.c, 3) pt.contents.c = 33 from ctypes import _pointer_type_cache del _pointer_type_cache[Table] def test_basic(self): p = pointer(c_int(42)) # Although a pointer can be indexed, it has no length self.assertRaises(TypeError, len, p) self.assertEqual(p[0], 42) self.assertEqual(p[0:1], [42]) self.assertEqual(p.contents.value, 42) def test_charpp(self): """Test that a character pointer-to-pointer is correctly passed""" dll = CDLL(_ctypes_test.__file__) func = dll._testfunc_c_p_p func.restype = c_char_p argv = (c_char_p * 2)() argc = c_int( 2 ) argv[0] = b'hello' argv[1] = b'world' result = func( byref(argc), argv ) self.assertEqual(result, b'world') def test_bug_1467852(self): # http://sourceforge.net/tracker/?func=detail&atid=532154&aid=1467852&group_id=71702 x = c_int(5) dummy = [] for i in range(32000): dummy.append(c_int(i)) y = c_int(6) p = pointer(x) pp = pointer(p) q = pointer(y) pp[0] = q # <== self.assertEqual(p[0], 6) def test_c_void_p(self): # http://sourceforge.net/tracker/?func=detail&aid=1518190&group_id=5470&atid=105470 if sizeof(c_void_p) == 4: self.assertEqual(c_void_p(0xFFFFFFFF).value, c_void_p(-1).value) self.assertEqual(c_void_p(0xFFFFFFFFFFFFFFFF).value, c_void_p(-1).value) elif sizeof(c_void_p) == 8: self.assertEqual(c_void_p(0xFFFFFFFF).value, 0xFFFFFFFF) self.assertEqual(c_void_p(0xFFFFFFFFFFFFFFFF).value, c_void_p(-1).value) self.assertEqual(c_void_p(0xFFFFFFFFFFFFFFFFFFFFFFFF).value, c_void_p(-1).value) self.assertRaises(TypeError, c_void_p, 3.14) # make sure floats are NOT accepted self.assertRaises(TypeError, c_void_p, object()) # nor other objects def test_pointers_bool(self): # NULL pointers have a boolean False value, non-NULL pointers True. self.assertEqual(bool(POINTER(c_int)()), False) self.assertEqual(bool(pointer(c_int())), True) self.assertEqual(bool(CFUNCTYPE(None)(0)), False) self.assertEqual(bool(CFUNCTYPE(None)(42)), True) # COM methods are boolean True: if sys.platform == "win32": mth = WINFUNCTYPE(None)(42, "name", (), None) self.assertEqual(bool(mth), True) def test_pointer_type_name(self): LargeNamedType = type('T' * 2 ** 25, (Structure,), {}) self.assertTrue(POINTER(LargeNamedType)) # to not leak references, we must clean _pointer_type_cache from ctypes import _pointer_type_cache del _pointer_type_cache[LargeNamedType] def test_pointer_type_str_name(self): large_string = 'T' * 2 ** 25 P = POINTER(large_string) self.assertTrue(P) # to not leak references, we must clean _pointer_type_cache from ctypes import _pointer_type_cache del _pointer_type_cache[id(P)] def test_abstract(self): from ctypes import _Pointer self.assertRaises(TypeError, _Pointer.set_type, 42) if __name__ == '__main__': unittest.main()