def sizeof(tp):
"""Similar to llmemory.sizeof() but tries hard to return a integer
instead of a symbolic value.
"""
if isinstance(tp, lltype.Typedef):
tp = tp.OF
if isinstance(tp, lltype.FixedSizeArray):
return sizeof(tp.OF) * tp.length
if isinstance(tp, lltype.Struct):
# the hint is present in structures probed by rffi_platform.
size = tp._hints.get('size')
if size is None:
size = llmemory.sizeof(tp) # a symbolic result in this case
return size
if isinstance(tp, lltype.Ptr) or tp is llmemory.Address:
return globals()['r_void*'].BITS/8
if tp is lltype.Char or tp is lltype.Bool:
return 1
if tp is lltype.UniChar:
return r_wchar_t.BITS/8
if tp is lltype.Float:
return 8
if tp is lltype.SingleFloat:
return 4
if tp is lltype.LongFloat:
# :-/
return sizeof_c_type("long double")
assert isinstance(tp, lltype.Number)
if tp is lltype.Signed:
return LONG_BIT/8
return tp._type.BITS/8
def sizeof(tp):
"""Similar to llmemory.sizeof() but tries hard to return a integer
instead of a symbolic value.
"""
if isinstance(tp, lltype.Typedef):
tp = tp.OF
if isinstance(tp, lltype.FixedSizeArray):
return sizeof(tp.OF) * tp.length
if isinstance(tp, lltype.Struct):
# the hint is present in structures probed by rffi_platform.
size = tp._hints.get('size')
if size is None:
size = llmemory.sizeof(tp) # a symbolic result in this case
return size
if isinstance(tp, lltype.Ptr) or tp is llmemory.Address:
return globals()['r_void*'].BITS/8
if tp is lltype.Char or tp is lltype.Bool:
return 1
if tp is lltype.UniChar:
return r_wchar_t.BITS/8
if tp is lltype.Float:
return 8
if tp is lltype.SingleFloat:
return 4
if tp is lltype.LongFloat:
# :-/
return sizeof_c_type("long double")
assert isinstance(tp, lltype.Number)
if tp is lltype.Signed:
return LONG_BIT/8
return tp._type.BITS/8
# ____________________________________________________________
TYPES = []
for _name in 'short int long'.split():
for name in (_name, 'unsigned ' + _name):
TYPES.append(name)
TYPES += ['signed char', 'unsigned char',
'long long', 'unsigned long long',
'size_t', 'time_t', 'wchar_t',
'uintptr_t', 'intptr_t',
'void*'] # generic pointer type
# This is a bit of a hack since we can't use rffi_platform here.
try:
sizeof_c_type('__int128_t', ignore_errors=True)
TYPES += ['__int128_t']
except CompilationError:
pass
_TYPES_ARE_UNSIGNED = set(['size_t', 'uintptr_t']) # plus "unsigned *"
if os.name != 'nt':
TYPES.append('mode_t')
TYPES.append('pid_t')
TYPES.append('ssize_t')
else:
MODE_T = lltype.Signed
PID_T = lltype.Signed
SSIZE_T = lltype.Signed
def populate_inttypes():
# ____________________________________________________________
TYPES = []
for _name in 'short int long'.split():
for name in (_name, 'unsigned ' + _name):
TYPES.append(name)
TYPES += ['signed char', 'unsigned char',
'long long', 'unsigned long long',
'size_t', 'time_t', 'wchar_t',
'uintptr_t', 'intptr_t',
'void*'] # generic pointer type
# This is a bit of a hack since we can't use rffi_platform here.
try:
sizeof_c_type('__int128_t', ignore_errors=True)
TYPES += ['__int128_t']
except CompilationError:
pass
if os.name != 'nt':
TYPES.append('mode_t')
TYPES.append('pid_t')
TYPES.append('ssize_t')
# the types below are rare enough and not available on Windows
TYPES.extend(['ptrdiff_t',
'int_least8_t', 'uint_least8_t',
'int_least16_t', 'uint_least16_t',
'int_least32_t', 'uint_least32_t',
'int_least64_t', 'uint_least64_t',
'int_fast8_t', 'uint_fast8_t',
'n': {
'size': 2,
'pack': pack_int,
'unpack': unpack_int,
'bigendian': True,
'many_args': True,
},
'v': {
'size': 2,
'pack': pack_int,
'unpack': unpack_int,
'bigendian': False,
'many_args': True,
},
'i': {
'size': sizeof_c_type('unsigned int'),
'pack': pack_int,
'unpack': unpack_int,
'signed': True,
'many_args': True,
},
'I': {
'size': 4,
'pack': pack_int,
'unpack': unpack_int,
'many_args': True,
},
'l': {
'size': 4,
'pack': pack_int,
'unpack': unpack_int,
