def build_ctype(self, name, decl):
which = decl.getitem(String(u"type"))
if isinstance(which, String) and which.string == u"cfunc":
restype = decl.getitem(String(u'restype'))
argtypes_list = decl.getitem(String(u'argtypes'))
if not isinstance(argtypes_list, List):
raise Error(u"incorrect function record")
restype = self.lookup_type(restype)
argtypes = []
for argtype in argtypes_list.contents:
argtypes.append(self.lookup_type(argtype))
return ffi.CFunc(restype, argtypes)
if isinstance(which, String) and which.string == u"union":
if decl in self.cycle_catch:
return self.cycle_catch[decl]
fields = decl.getitem(String(u"fields"))
self.cycle_catch[decl] = ctype = ffi.Union(None, name)
ctype.declare(self.parse_fields(name, fields))
return ctype
if isinstance(which, String) and which.string == u"struct":
if decl in self.cycle_catch:
return self.cycle_catch[decl]
fields = decl.getitem(String(u"fields"))
self.cycle_catch[decl] = ctype = ffi.Struct(None, name)
ctype.declare(self.parse_fields(name, fields))
return ctype
if isinstance(which, String) and which.string == u"opaque":
return ffi.Struct(None, name)
if isinstance(which, String) and which.string == u"array":
ctype = self.lookup_type(decl.getitem(String(u'ctype')))
length = decl.getitem(String(u"length"))
if length is null:
return ffi.Array(ctype)
elif isinstance(length, Integer):
return ffi.Array(ctype, length.value)
else:
raise Error(name +
u": incorrect length value: %s" % length.repr())
if isinstance(which, String) and which.string == u"pointer":
to = self.lookup_type(decl.getitem(String(u'to')))
return ffi.Pointer(to)
raise Error(name + u": no ctype builder for " + which.repr())
def lookup_type(self, name):
if isinstance(name, String):
if name.string in self.typecache:
return self.typecache[name.string]
if name.string.endswith(u'*'):
ctype = ffi.Pointer(self.lookup_type(String(name.string[:-1])))
self.typecache[name.string] = ctype
return ctype
if self.types.contains(name):
decl = self.types.getitem(name)
ctype = self.build_ctype(name.string, decl)
self.typecache[name.string] = ctype
return ctype
if name.string in ffi.systemv.types:
return ffi.systemv.types[name.string]
if name.string == u'void':
return null
raise Error(name.repr() + u" not in API")
else:
return self.build_ctype(u"<unnamed>", name)
def lookup_type(self, name):
if isinstance(name, String):
if name.string in self.typecache:
return self.typecache[name.string]
if name.string.endswith(u'*'):
ctype = ffi.Pointer(self.lookup_type(String(name.string[:-1])))
self.typecache[name.string] = ctype
return ctype
if self.types.contains(name):
decl = self.types.getitem(name)
ctype = self.build_ctype(name.string, decl)
self.typecache[name.string] = ctype
return ctype
if name.string in ffi.systemv.types:
return ffi.systemv.types[name.string]
if name.string == u'void':
return null
if u"." in name.string and self.dependencies is not None:
namespace, name = name.string.split(u".", 1)
return self.dependencies.getitem(String(namespace)).getattr(name)
raise unwind(LKeyError(self, name))
else:
return self.build_ctype(u"<unnamed>", name)
def build_ctype_raw(self, name, decl):
which = decl.getitem(String(u"type"))
if isinstance(which, String) and which.string == u"cfunc":
restype = decl.getitem(String(u'restype'))
argtypes_list = decl.getitem(String(u'argtypes'))
if not isinstance(argtypes_list, List):
raise OldError(u"incorrect function record")
restype = self.lookup_type(restype)
argtypes = []
for argtype in argtypes_list.contents:
argtypes.append(self.lookup_type(argtype))
return ffi.CFunc(restype, argtypes)
if isinstance(which, String) and which.string == u"union":
if decl in self.cycle_catch:
return self.cycle_catch[decl]
fields = decl.getitem(String(u"fields"))
self.cycle_catch[decl] = ctype = ffi.Union(None, name)
ctype.declare(self.parse_fields(name, fields))
return ctype
if isinstance(which, String) and which.string == u"struct":
if decl in self.cycle_catch:
return self.cycle_catch[decl]
fields = decl.getitem(String(u"fields"))
self.cycle_catch[decl] = ctype = ffi.Struct(None, name)
ctype.declare(self.parse_fields(name, fields))
return ctype
if isinstance(which, String) and which.string == u"opaque":
return ffi.Struct(None, name)
if isinstance(which, String) and which.string == u"array":
ctype = self.lookup_type(decl.getitem(String(u'ctype')))
length = decl.getitem(String(u"length"))
if length is null:
return ffi.Array(ctype)
elif isinstance(length, Integer):
return ffi.Array(ctype, length.value)
else:
raise OldError(name +
u": incorrect length value: %s" % length.repr())
if isinstance(which, String) and which.string == u"pointer":
to_obj = decl.getitem(String(u'to'))
# A little hack to name common opaque pointers.
if isinstance(to_obj, Dict):
to = self.build_ctype(name, to_obj)
else:
to = self.lookup_type(to_obj)
return ffi.Pointer(to)
if isinstance(which, String) and which.string == u"enum":
ctype = self.lookup_type(decl.getitem(String(u'ctype')))
constants = decl.getitem(String(u"constants"))
if not isinstance(constants, Dict):
raise unwind(
LTypeError(name +
u": expected constant table to be dictionary"))
table = {}
for name_, const in constants.data.iteritems():
if not isinstance(name_, String):
raise unwind(
LTypeError(
name +
u": expected constants table key to be string"))
if not isinstance(const, Integer):
raise unwind(
LTypeError(
name +
u": expected constants table value to be integer"))
table[name_.string] = const.value
return ffi.Bitmask(ffi.to_type(ctype), table, multichoice=False)
if isinstance(which, String) and which.string == u"bitmask":
ctype = self.lookup_type(decl.getitem(String(u'ctype')))
constants = decl.getitem(String(u"constants"))
if not isinstance(constants, Dict):
raise unwind(
LTypeError(name +
u": expected constant table to be dictionary"))
table = {}
for name_, const in constants.data.iteritems():
if not isinstance(name_, String):
raise unwind(
LTypeError(
name +
u": expected constants table key to be string"))
if not isinstance(const, Integer):
raise unwind(
LTypeError(
name +
u": expected constants table value to be integer"))
table[name_.string] = const.value
return ffi.Bitmask(ffi.to_type(ctype), table, multichoice=True)
raise OldError(name + u": no ctype builder for " + which.repr())