def test_union(self):
import _rawffi
longsize = _rawffi.sizeof('l')
S = _rawffi.Structure([('x', 'h'), ('y', 'l')], union=True)
s = S(autofree=False)
s.x = 12345
lib = _rawffi.CDLL(self.lib_name)
f = lib.ptr('ret_un_func', [(S, 1)], (S, 1))
ret = f(s)
assert ret.y == 1234500, "ret.y == %d" % (ret.y,)
s.free()
def test_union(self):
import _rawffi
longsize = _rawffi.sizeof('l')
S = _rawffi.Structure([('x', 'h'), ('y', 'l')], union=True)
s = S(autofree=False)
s.x = 12345
lib = _rawffi.CDLL(self.lib_name)
f = lib.ptr('ret_un_func', [(S, 1)], (S, 1))
ret = f(s)
assert ret.y == 1234500, "ret.y == %d" % (ret.y, )
s.free()
def test_unicode_array(self):
import _rawffi
A = _rawffi.Array('u')
a = A(6, u'\u1234')
assert a[0] == u'\u1234'
a[0] = u'\ud800'
assert a[0] == u'\ud800'
if _rawffi.sizeof('u') == 4:
a[0] = u'\U00012345'
assert a[0] == u'\U00012345'
B = _rawffi.Array('i')
b = B.fromaddress(a.itemaddress(0), 1)
b[0] = 0xffffffff
raises(ValueError, "a[0]")
a.free()
def test_wcharp2rawunicode(self):
import _rawffi
A = _rawffi.Array('i')
arg = A(1)
arg[0] = 0x1234
u = _rawffi.wcharp2rawunicode(arg.itemaddress(0))
assert u == u'\u1234'
u = _rawffi.wcharp2rawunicode(arg.itemaddress(0), 1)
assert u == u'\u1234'
arg[0] = -1
if _rawffi.sizeof('u') == 4:
raises(ValueError, _rawffi.wcharp2rawunicode, arg.itemaddress(0))
raises(ValueError, _rawffi.wcharp2rawunicode, arg.itemaddress(0), 1)
arg[0] = 0x110000
raises(ValueError, _rawffi.wcharp2rawunicode, arg.itemaddress(0))
raises(ValueError, _rawffi.wcharp2rawunicode, arg.itemaddress(0), 1)
arg.free()
def test_wide_char(self):
import _rawffi, sys
A = _rawffi.Array('u')
a = A(3)
a[0] = u'x'
a[1] = u'y'
a[2] = u'z'
assert a[0] == u'x'
b = _rawffi.Array('c').fromaddress(a.buffer, 38)
if _rawffi.sizeof('u') == 4:
# UCS4 build
if sys.byteorder == 'big':
assert b[0:8] == b'\x00\x00\x00x\x00\x00\x00y'
else:
assert b[0:5] == b'x\x00\x00\x00y'
else:
# UCS2 build
print(b[0:4])
assert b[0:4] == b'x\x00y\x00'
a.free()
def __new__(self, name, cls, typedict):
d = dict(
size = _rawffi.sizeof('P'),
align = _rawffi.alignment('P'),
length = 1,
_ffiargshape_ = 'P',
_ffishape_ = 'P',
_fficompositesize_ = None,
)
# XXX check if typedict['_type_'] is any sane
# XXX remember about paramfunc
obj = type.__new__(self, name, cls, typedict)
for k, v in d.iteritems():
setattr(obj, k, v)
if '_type_' in typedict:
self.set_type(obj, typedict['_type_'])
else:
def __init__(self, value=None):
raise TypeError("%s has no type" % obj)
obj.__init__ = __init__
return obj
def _sizeofinstances(self):
return _rawffi.sizeof('P')
def test_sizes_and_alignments(self):
import _rawffi
for k, (s, a) in self.sizes_and_alignments.iteritems():
print k, s, a
assert _rawffi.sizeof(k) == s
assert _rawffi.alignment(k) == a
def _sizeofinstances(self):
return _rawffi.sizeof(self._type_)
def __new__(self, name, bases, dct):
try:
tp = dct['_type_']
except KeyError:
for base in bases:
if hasattr(base, '_type_'):
tp = base._type_
break
else:
raise AttributeError("cannot find _type_ attribute")
if tp == 'abstract':
tp = 'i'
if (not isinstance(tp, str) or not len(tp) == 1
or tp not in SIMPLE_TYPE_CHARS):
raise ValueError('%s is not a type character' % (tp))
default = TP_TO_DEFAULT[tp]
ffiarray = _rawffi.Array(tp)
result = type.__new__(self, name, bases, dct)
result._ffiargshape_ = tp
result._ffishape_ = tp
result._fficompositesize_ = None
result._ffiarray = ffiarray
if tp in CTYPES_TO_PEP3118_TABLE:
pep_code = CTYPES_TO_PEP3118_TABLE[tp][_rawffi.sizeof(tp)]
else:
pep_code = tp
result._format = byteorder[sys.byteorder] + pep_code
if tp == 'z':
# c_char_p
def _getvalue(self):
addr = self._buffer[0]
if addr == 0:
return None
else:
return _rawffi.charp2string(addr)
def _setvalue(self, value):
if isinstance(value, basestring):
if isinstance(value, unicode):
value = value.encode(ConvMode.encoding,
ConvMode.errors)
#self._objects = value
array = _rawffi.Array('c')(len(value) + 1, value)
self._objects = CArgObject(value, array)
value = array.buffer
elif value is None:
value = 0
self._buffer[0] = value
result.value = property(_getvalue, _setvalue)
result._ffiargtype = _ffi.types.Pointer(_ffi.types.char)
elif tp == 'Z':
# c_wchar_p
def _getvalue(self):
addr = self._buffer[0]
if addr == 0:
return None
else:
return _rawffi.wcharp2unicode(addr)
def _setvalue(self, value):
if isinstance(value, basestring):
if isinstance(value, str):
value = value.decode(ConvMode.encoding,
ConvMode.errors)
#self._objects = value
array = _rawffi.Array('u')(len(value) + 1, value)
self._objects = CArgObject(value, array)
value = array.buffer
elif value is None:
value = 0
self._buffer[0] = value
result.value = property(_getvalue, _setvalue)
result._ffiargtype = _ffi.types.Pointer(_ffi.types.unichar)
elif tp == 'P':
# c_void_p
def _getvalue(self):
addr = self._buffer[0]
if addr == 0:
return None
return addr
def _setvalue(self, value):
if isinstance(value, str):
array = _rawffi.Array('c')(len(value) + 1, value)
self._objects = CArgObject(value, array)
value = array.buffer
elif value is None:
value = 0
self._buffer[0] = value
result.value = property(_getvalue, _setvalue)
elif tp == 'u':
def _setvalue(self, val):
if isinstance(val, str):
val = val.decode(ConvMode.encoding, ConvMode.errors)
# possible if we use 'ignore'
if val:
self._buffer[0] = val
def _getvalue(self):
return self._buffer[0]
result.value = property(_getvalue, _setvalue)
elif tp == 'c':
def _setvalue(self, val):
if isinstance(val, unicode):
val = val.encode(ConvMode.encoding, ConvMode.errors)
if val:
self._buffer[0] = val
def _getvalue(self):
return self._buffer[0]
result.value = property(_getvalue, _setvalue)
elif tp == 'O':
def _setvalue(self, val):
num = pyobj_container.add(val)
self._buffer[0] = num
def _getvalue(self):
return pyobj_container.get(self._buffer[0])
result.value = property(_getvalue, _setvalue)
elif tp == 'X':
from ctypes import WinDLL
# Use WinDLL("oleaut32") instead of windll.oleaut32
# because the latter is a shared (cached) object; and
# other code may set their own restypes. We need out own
# restype here.
oleaut32 = WinDLL("oleaut32")
SysAllocStringLen = oleaut32.SysAllocStringLen
SysStringLen = oleaut32.SysStringLen
SysFreeString = oleaut32.SysFreeString
def _getvalue(self):
addr = self._buffer[0]
if addr == 0:
return None
else:
size = SysStringLen(addr)
return _rawffi.wcharp2rawunicode(addr, size)
def _setvalue(self, value):
if isinstance(value, basestring):
if isinstance(value, str):
value = value.decode(ConvMode.encoding,
ConvMode.errors)
array = _rawffi.Array('u')(len(value) + 1, value)
value = SysAllocStringLen(array.buffer, len(value))
elif value is None:
value = 0
if self._buffer[0]:
SysFreeString(self._buffer[0])
self._buffer[0] = value
result.value = property(_getvalue, _setvalue)
elif tp == '?': # regular bool
def _getvalue(self):
return bool(self._buffer[0])
def _setvalue(self, value):
self._buffer[0] = bool(value)
result.value = property(_getvalue, _setvalue)
elif tp == 'v': # VARIANT_BOOL type
def _getvalue(self):
return bool(self._buffer[0])
def _setvalue(self, value):
if value:
self._buffer[0] = -1 # VARIANT_TRUE
else:
self._buffer[0] = 0 # VARIANT_FALSE
result.value = property(_getvalue, _setvalue)
# make pointer-types compatible with the _ffi fast path
if result._is_pointer_like():
def _as_ffi_pointer_(self, ffitype):
return as_ffi_pointer(self, ffitype)
result._as_ffi_pointer_ = _as_ffi_pointer_
if name[-2:] != '_p' and name[-3:] not in ('_le', '_be') \
and name not in ('c_wchar', '_SimpleCData', 'c_longdouble', 'c_bool', 'py_object'):
if sys.byteorder == 'big':
name += '_le'
swapped = self.__new__(self, name, bases, dct)
result.__ctype_le__ = swapped
result.__ctype_be__ = result
swapped.__ctype_be__ = result
swapped.__ctype_le__ = swapped
swapped._format = '<' + pep_code
else:
name += '_be'
swapped = self.__new__(self, name, bases, dct)
result.__ctype_be__ = swapped
result.__ctype_le__ = result
swapped.__ctype_le__ = result
swapped.__ctype_be__ = swapped
swapped._format = '>' + pep_code
from _ctypes import sizeof
def _getval(self):
return swap_bytes(self._buffer[0], sizeof(self), name, 'get')
def _setval(self, value):
d = result()
d.value = value
self._buffer[0] = swap_bytes(d.value, sizeof(self), name,
'set')
swapped.value = property(_getval, _setval)
return result
def _sizeofinstances(self):
return _rawffi.sizeof('P')
def test_sizes_and_alignments(self):
import _rawffi
for k, (s, a) in self.sizes_and_alignments.iteritems():
print k,s,a
assert _rawffi.sizeof(k) == s
assert _rawffi.alignment(k) == a
def _sizeofinstances(self):
return _rawffi.sizeof(self._type_)
