golden hour

/usr/lib64/python2.7/site-packages/cffi

File/Folder	Size	Actions
__init__.py	483 B
__init__.pyc	541 B
__init__.pyo	541 B
_cffi_include.h	9.78 KB
_embedding.h	16.84 KB
api.py	36.75 KB
api.pyc	35.77 KB
api.pyo	35.56 KB
backend_ctypes.py	39.19 KB
backend_ctypes.pyc	44.31 KB
backend_ctypes.pyo	43.94 KB
cffi_opcode.py	5.35 KB
cffi_opcode.pyc	5.63 KB
cffi_opcode.pyo	5.57 KB
commontypes.py	2.47 KB
commontypes.pyc	2.21 KB
commontypes.pyo	2.14 KB
cparser.py	36.2 KB
cparser.pyc	23.81 KB
cparser.pyo	23.63 KB
ffiplatform.py	3.64 KB
ffiplatform.pyc	4.61 KB
ffiplatform.pyo	4.61 KB
gc_weakref.py	642 B
gc_weakref.pyc	1.21 KB
gc_weakref.pyo	1.17 KB
lock.py	747 B
lock.pyc	441 B
lock.pyo	441 B
model.py	20.62 KB
model.pyc	23.04 KB
model.pyo	22.84 KB
parse_c_type.h	5.7 KB
recompiler.py	59.29 KB
recompiler.pyc	52.37 KB
recompiler.pyo	51.63 KB
setuptools_ext.py	6.01 KB
setuptools_ext.pyc	6.73 KB
setuptools_ext.pyo	6.69 KB
vengine_cpy.py	40.4 KB
vengine_cpy.pyc	36.72 KB
vengine_cpy.pyo	36.39 KB
vengine_gen.py	26.01 KB
vengine_gen.pyc	24.02 KB
vengine_gen.pyo	23.64 KB
verifier.py	11.25 KB
verifier.pyc	11.15 KB
verifier.pyo	11.11 KB

Edit: model.py

import types, sys
import weakref

from .lock import allocate_lock

# type qualifiers
Q_CONST    = 0x01
Q_RESTRICT = 0x02
Q_VOLATILE = 0x04

def qualify(quals, replace_with):
    if quals & Q_CONST:
        replace_with = ' const ' + replace_with.lstrip()
    if quals & Q_VOLATILE:
        replace_with = ' volatile ' + replace_with.lstrip()
    if quals & Q_RESTRICT:
        # It seems that __restrict is supported by gcc and msvc.
        # If you hit some different compiler, add a #define in
        # _cffi_include.h for it (and in its copies, documented there)
        replace_with = ' __restrict ' + replace_with.lstrip()
    return replace_with

class BaseTypeByIdentity(object):
    is_array_type = False
    is_raw_function = False

def get_c_name(self, replace_with='', context='a C file', quals=0):
        result = self.c_name_with_marker
        assert result.count('&') == 1
        # some logic duplication with ffi.getctype()... :-(
        replace_with = replace_with.strip()
        if replace_with:
            if replace_with.startswith('*') and '&[' in result:
                replace_with = '(%s)' % replace_with
            elif not replace_with[0] in '[(':
                replace_with = ' ' + replace_with
        replace_with = qualify(quals, replace_with)
        result = result.replace('&', replace_with)
        if '$' in result:
            from .ffiplatform import VerificationError
            raise VerificationError(
                "cannot generate '%s' in %s: unknown type name"
                % (self._get_c_name(), context))
        return result

def _get_c_name(self):
        return self.c_name_with_marker.replace('&', '')

def has_c_name(self):
        return '$' not in self._get_c_name()

def is_integer_type(self):
        return False

def get_cached_btype(self, ffi, finishlist, can_delay=False):
        try:
            BType = ffi._cached_btypes[self]
        except KeyError:
            BType = self.build_backend_type(ffi, finishlist)
            BType2 = ffi._cached_btypes.setdefault(self, BType)
            assert BType2 is BType
        return BType

def __repr__(self):
        return '<%s>' % (self._get_c_name(),)

def _get_items(self):
        return [(name, getattr(self, name)) for name in self._attrs_]

class BaseType(BaseTypeByIdentity):

def __eq__(self, other):
        return (self.__class__ == other.__class__ and
                self._get_items() == other._get_items())

def __ne__(self, other):
        return not self == other

def __hash__(self):
        return hash((self.__class__, tuple(self._get_items())))

class VoidType(BaseType):
    _attrs_ = ()

def __init__(self):
        self.c_name_with_marker = 'void&'

def build_backend_type(self, ffi, finishlist):
        return global_cache(self, ffi, 'new_void_type')

void_type = VoidType()

class BasePrimitiveType(BaseType):
    pass

class PrimitiveType(BasePrimitiveType):
    _attrs_ = ('name',)

ALL_PRIMITIVE_TYPES = {
        'char':               'c',
        'short':              'i',
        'int':                'i',
        'long':               'i',
        'long long':          'i',
        'signed char':        'i',
        'unsigned char':      'i',
        'unsigned short':     'i',
        'unsigned int':       'i',
        'unsigned long':      'i',
        'unsigned long long': 'i',
        'float':              'f',
        'double':             'f',
        'long double':        'f',
        '_Bool':              'i',
        # the following types are not primitive in the C sense
        'wchar_t':            'c',
        'int8_t':             'i',
        'uint8_t':            'i',
        'int16_t':            'i',
        'uint16_t':           'i',
        'int32_t':            'i',
        'uint32_t':           'i',
        'int64_t':            'i',
        'uint64_t':           'i',
        'int_least8_t':       'i',
        'uint_least8_t':      'i',
        'int_least16_t':      'i',
        'uint_least16_t':     'i',
        'int_least32_t':      'i',
        'uint_least32_t':     'i',
        'int_least64_t':      'i',
        'uint_least64_t':     'i',
        'int_fast8_t':        'i',
        'uint_fast8_t':       'i',
        'int_fast16_t':       'i',
        'uint_fast16_t':      'i',
        'int_fast32_t':       'i',
        'uint_fast32_t':      'i',
        'int_fast64_t':       'i',
        'uint_fast64_t':      'i',
        'intptr_t':           'i',
        'uintptr_t':          'i',
        'intmax_t':           'i',
        'uintmax_t':          'i',
        'ptrdiff_t':          'i',
        'size_t':             'i',
        'ssize_t':            'i',
        }

def __init__(self, name):
        assert name in self.ALL_PRIMITIVE_TYPES
        self.name = name
        self.c_name_with_marker = name + '&'

def is_char_type(self):
        return self.ALL_PRIMITIVE_TYPES[self.name] == 'c'
    def is_integer_type(self):
        return self.ALL_PRIMITIVE_TYPES[self.name] == 'i'
    def is_float_type(self):
        return self.ALL_PRIMITIVE_TYPES[self.name] == 'f'

def build_backend_type(self, ffi, finishlist):
        return global_cache(self, ffi, 'new_primitive_type', self.name)

class UnknownIntegerType(BasePrimitiveType):
    _attrs_ = ('name',)

def __init__(self, name):
        self.name = name
        self.c_name_with_marker = name + '&'

def is_integer_type(self):
        return True

def build_backend_type(self, ffi, finishlist):
        raise NotImplementedError("integer type '%s' can only be used after "
                                  "compilation" % self.name)

class UnknownFloatType(BasePrimitiveType):
    _attrs_ = ('name', )

def __init__(self, name):
        self.name = name
        self.c_name_with_marker = name + '&'

def build_backend_type(self, ffi, finishlist):
        raise NotImplementedError("float type '%s' can only be used after "
                                  "compilation" % self.name)

class BaseFunctionType(BaseType):
    _attrs_ = ('args', 'result', 'ellipsis', 'abi')

def __init__(self, args, result, ellipsis, abi=None):
        self.args = args
        self.result = result
        self.ellipsis = ellipsis
        self.abi = abi
        #
        reprargs = [arg._get_c_name() for arg in self.args]
        if self.ellipsis:
            reprargs.append('...')
        reprargs = reprargs or ['void']
        replace_with = self._base_pattern % (', '.join(reprargs),)
        if abi is not None:
            replace_with = replace_with[:1] + abi + ' ' + replace_with[1:]
        self.c_name_with_marker = (
            self.result.c_name_with_marker.replace('&', replace_with))

class RawFunctionType(BaseFunctionType):
    # Corresponds to a C type like 'int(int)', which is the C type of
    # a function, but not a pointer-to-function.  The backend has no
    # notion of such a type; it's used temporarily by parsing.
    _base_pattern = '(&)(%s)'
    is_raw_function = True

def build_backend_type(self, ffi, finishlist):
        from . import api
        raise api.CDefError("cannot render the type %r: it is a function "
                            "type, not a pointer-to-function type" % (self,))

def as_function_pointer(self):
        return FunctionPtrType(self.args, self.result, self.ellipsis, self.abi)

class FunctionPtrType(BaseFunctionType):
    _base_pattern = '(*&)(%s)'

def build_backend_type(self, ffi, finishlist):
        result = self.result.get_cached_btype(ffi, finishlist)
        args = []
        for tp in self.args:
            args.append(tp.get_cached_btype(ffi, finishlist))
        abi_args = ()
        if self.abi == "__stdcall":
            if not self.ellipsis:    # __stdcall ignored for variadic funcs
                try:
                    abi_args = (ffi._backend.FFI_STDCALL,)
                except AttributeError:
                    pass
        return global_cache(self, ffi, 'new_function_type',
                            tuple(args), result, self.ellipsis, *abi_args)

def as_raw_function(self):
        return RawFunctionType(self.args, self.result, self.ellipsis, self.abi)

class PointerType(BaseType):
    _attrs_ = ('totype', 'quals')

def __init__(self, totype, quals=0):
        self.totype = totype
        self.quals = quals
        extra = qualify(quals, " *&")
        if totype.is_array_type:
            extra = "(%s)" % (extra.lstrip(),)
        self.c_name_with_marker = totype.c_name_with_marker.replace('&', extra)

def build_backend_type(self, ffi, finishlist):
        BItem = self.totype.get_cached_btype(ffi, finishlist, can_delay=True)
        return global_cache(self, ffi, 'new_pointer_type', BItem)

voidp_type = PointerType(void_type)

def ConstPointerType(totype):
    return PointerType(totype, Q_CONST)

const_voidp_type = ConstPointerType(void_type)

class NamedPointerType(PointerType):
    _attrs_ = ('totype', 'name')

def __init__(self, totype, name, quals=0):
        PointerType.__init__(self, totype, quals)
        self.name = name
        self.c_name_with_marker = name + '&'

class ArrayType(BaseType):
    _attrs_ = ('item', 'length')
    is_array_type = True

def __init__(self, item, length):
        self.item = item
        self.length = length
        #
        if length is None:
            brackets = '&[]'
        elif length == '...':
            brackets = '&[/*...*/]'
        else:
            brackets = '&[%s]' % length
        self.c_name_with_marker = (
            self.item.c_name_with_marker.replace('&', brackets))

def resolve_length(self, newlength):
        return ArrayType(self.item, newlength)

def build_backend_type(self, ffi, finishlist):
        if self.length == '...':
            from . import api
            raise api.CDefError("cannot render the type %r: unknown length" %
                                (self,))
        self.item.get_cached_btype(ffi, finishlist)   # force the item BType
        BPtrItem = PointerType(self.item).get_cached_btype(ffi, finishlist)
        return global_cache(self, ffi, 'new_array_type', BPtrItem, self.length)

char_array_type = ArrayType(PrimitiveType('char'), None)

class StructOrUnionOrEnum(BaseTypeByIdentity):
    _attrs_ = ('name',)
    forcename = None

def build_c_name_with_marker(self):
        name = self.forcename or '%s %s' % (self.kind, self.name)
        self.c_name_with_marker = name + '&'

def force_the_name(self, forcename):
        self.forcename = forcename
        self.build_c_name_with_marker()

def get_official_name(self):
        assert self.c_name_with_marker.endswith('&')
        return self.c_name_with_marker[:-1]

class StructOrUnion(StructOrUnionOrEnum):
    fixedlayout = None
    completed = 0
    partial = False
    packed = False

def __init__(self, name, fldnames, fldtypes, fldbitsize, fldquals=None):
        self.name = name
        self.fldnames = fldnames
        self.fldtypes = fldtypes
        self.fldbitsize = fldbitsize
        self.fldquals = fldquals
        self.build_c_name_with_marker()

def has_anonymous_struct_fields(self):
        if self.fldtypes is None:
            return False
        for name, type in zip(self.fldnames, self.fldtypes):
            if name == '' and isinstance(type, StructOrUnion):
                return True
        return False

def enumfields(self):
        fldquals = self.fldquals
        if fldquals is None:
            fldquals = (0,) * len(self.fldnames)
        for name, type, bitsize, quals in zip(self.fldnames, self.fldtypes,
                                              self.fldbitsize, fldquals):
            if name == '' and isinstance(type, StructOrUnion):
                # nested anonymous struct/union
                for result in type.enumfields():
                    yield result
            else:
                yield (name, type, bitsize, quals)

def force_flatten(self):
        # force the struct or union to have a declaration that lists
        # directly all fields returned by enumfields(), flattening
        # nested anonymous structs/unions.
        names = []
        types = []
        bitsizes = []
        fldquals = []
        for name, type, bitsize, quals in self.enumfields():
            names.append(name)
            types.append(type)
            bitsizes.append(bitsize)
            fldquals.append(quals)
        self.fldnames = tuple(names)
        self.fldtypes = tuple(types)
        self.fldbitsize = tuple(bitsizes)
        self.fldquals = tuple(fldquals)

def get_cached_btype(self, ffi, finishlist, can_delay=False):
        BType = StructOrUnionOrEnum.get_cached_btype(self, ffi, finishlist,
                                                     can_delay)
        if not can_delay:
            self.finish_backend_type(ffi, finishlist)
        return BType

def finish_backend_type(self, ffi, finishlist):
        if self.completed:
            if self.completed != 2:
                raise NotImplementedError("recursive structure declaration "
                                          "for '%s'" % (self.name,))
            return
        BType = ffi._cached_btypes[self]
        #
        self.completed = 1
        #
        if self.fldtypes is None:
            pass    # not completing it: it's an opaque struct
            #
        elif self.fixedlayout is None:
            fldtypes = [tp.get_cached_btype(ffi, finishlist)
                        for tp in self.fldtypes]
            lst = list(zip(self.fldnames, fldtypes, self.fldbitsize))
            sflags = 0
            if self.packed:
                sflags = 8    # SF_PACKED
            ffi._backend.complete_struct_or_union(BType, lst, self,
                                                  -1, -1, sflags)
            #
        else:
            fldtypes = []
            fieldofs, fieldsize, totalsize, totalalignment = self.fixedlayout
            for i in range(len(self.fldnames)):
                fsize = fieldsize[i]
                ftype = self.fldtypes[i]
                #
                if isinstance(ftype, ArrayType) and ftype.length == '...':
                    # fix the length to match the total size
                    BItemType = ftype.item.get_cached_btype(ffi, finishlist)
                    nlen, nrest = divmod(fsize, ffi.sizeof(BItemType))
                    if nrest != 0:
                        self._verification_error(
                            "field '%s.%s' has a bogus size?" % (
                            self.name, self.fldnames[i] or '{}'))
                    ftype = ftype.resolve_length(nlen)
                    self.fldtypes = (self.fldtypes[:i] + (ftype,) +
                                     self.fldtypes[i+1:])
                #
                BFieldType = ftype.get_cached_btype(ffi, finishlist)
                if isinstance(ftype, ArrayType) and ftype.length is None:
                    assert fsize == 0
                else:
                    bitemsize = ffi.sizeof(BFieldType)
                    if bitemsize != fsize:
                        self._verification_error(
                            "field '%s.%s' is declared as %d bytes, but is "
                            "really %d bytes" % (self.name,
                                                 self.fldnames[i] or '{}',
                                                 bitemsize, fsize))
                fldtypes.append(BFieldType)
            #
            lst = list(zip(self.fldnames, fldtypes, self.fldbitsize, fieldofs))
            ffi._backend.complete_struct_or_union(BType, lst, self,
                                                  totalsize, totalalignment)
        self.completed = 2

def _verification_error(self, msg):
        from .ffiplatform import VerificationError
        raise VerificationError(msg)

def check_not_partial(self):
        if self.partial and self.fixedlayout is None:
            from . import ffiplatform
            raise ffiplatform.VerificationMissing(self._get_c_name())

def build_backend_type(self, ffi, finishlist):
        self.check_not_partial()
        finishlist.append(self)
        #
        return global_cache(self, ffi, 'new_%s_type' % self.kind,
                            self.get_official_name(), key=self)

class StructType(StructOrUnion):
    kind = 'struct'

class UnionType(StructOrUnion):
    kind = 'union'

class EnumType(StructOrUnionOrEnum):
    kind = 'enum'
    partial = False
    partial_resolved = False

def __init__(self, name, enumerators, enumvalues, baseinttype=None):
        self.name = name
        self.enumerators = enumerators
        self.enumvalues = enumvalues
        self.baseinttype = baseinttype
        self.build_c_name_with_marker()

def force_the_name(self, forcename):
        StructOrUnionOrEnum.force_the_name(self, forcename)
        if self.forcename is None:
            name = self.get_official_name()
            self.forcename = '$' + name.replace(' ', '_')

def check_not_partial(self):
        if self.partial and not self.partial_resolved:
            from . import ffiplatform
            raise ffiplatform.VerificationMissing(self._get_c_name())

def build_backend_type(self, ffi, finishlist):
        self.check_not_partial()
        base_btype = self.build_baseinttype(ffi, finishlist)
        return global_cache(self, ffi, 'new_enum_type',
                            self.get_official_name(),
                            self.enumerators, self.enumvalues,
                            base_btype, key=self)

def build_baseinttype(self, ffi, finishlist):
        if self.baseinttype is not None:
            return self.baseinttype.get_cached_btype(ffi, finishlist)
        #
        from . import api
        if self.enumvalues:
            smallest_value = min(self.enumvalues)
            largest_value = max(self.enumvalues)
        else:
            import warnings
            warnings.warn("%r has no values explicitly defined; next version "
                          "will refuse to guess which integer type it is "
                          "meant to be (unsigned/signed, int/long)"
                          % self._get_c_name())
            smallest_value = largest_value = 0
        if smallest_value < 0:   # needs a signed type
            sign = 1
            candidate1 = PrimitiveType("int")
            candidate2 = PrimitiveType("long")
        else:
            sign = 0
            candidate1 = PrimitiveType("unsigned int")
            candidate2 = PrimitiveType("unsigned long")
        btype1 = candidate1.get_cached_btype(ffi, finishlist)
        btype2 = candidate2.get_cached_btype(ffi, finishlist)
        size1 = ffi.sizeof(btype1)
        size2 = ffi.sizeof(btype2)
        if (smallest_value >= ((-1) << (8*size1-1)) and
            largest_value < (1 << (8*size1-sign))):
            return btype1
        if (smallest_value >= ((-1) << (8*size2-1)) and
            largest_value < (1 << (8*size2-sign))):
            return btype2
        raise api.CDefError("%s values don't all fit into either 'long' "
                            "or 'unsigned long'" % self._get_c_name())

def unknown_type(name, structname=None):
    if structname is None:
        structname = '$%s' % name
    tp = StructType(structname, None, None, None)
    tp.force_the_name(name)
    tp.origin = "unknown_type"
    return tp

def unknown_ptr_type(name, structname=None):
    if structname is None:
        structname = '$$%s' % name
    tp = StructType(structname, None, None, None)
    return NamedPointerType(tp, name)

global_lock = allocate_lock()

def global_cache(srctype, ffi, funcname, *args, **kwds):
    key = kwds.pop('key', (funcname, args))
    assert not kwds
    try:
        return ffi._backend.__typecache[key]
    except KeyError:
        pass
    except AttributeError:
        # initialize the __typecache attribute, either at the module level
        # if ffi._backend is a module, or at the class level if ffi._backend
        # is some instance.
        if isinstance(ffi._backend, types.ModuleType):
            ffi._backend.__typecache = weakref.WeakValueDictionary()
        else:
            type(ffi._backend).__typecache = weakref.WeakValueDictionary()
    try:
        res = getattr(ffi._backend, funcname)(*args)
    except NotImplementedError as e:
        raise NotImplementedError("%s: %r: %s" % (funcname, srctype, e))
    # note that setdefault() on WeakValueDictionary is not atomic
    # and contains a rare bug (http://bugs.python.org/issue19542);
    # we have to use a lock and do it ourselves
    cache = ffi._backend.__typecache
    with global_lock:
        res1 = cache.get(key)
        if res1 is None:
            cache[key] = res
            return res
        else:
            return res1

def pointer_cache(ffi, BType):
    return global_cache('?', ffi, 'new_pointer_type', BType)

def attach_exception_info(e, name):
    if e.args and type(e.args[0]) is str:
        e.args = ('%s: %s' % (name, e.args[0]),) + e.args[1:]