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1536 lines (1135 loc) · 38.5 KB
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Copy pathpython_cext.py
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1536 lines (1135 loc) · 38.5 KB
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# Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
#
# The Universal Permissive License (UPL), Version 1.0
#
# Subject to the condition set forth below, permission is hereby granted to any
# person obtaining a copy of this software, associated documentation and/or
# data (collectively the "Software"), free of charge and under any and all
# copyright rights in the Software, and any and all patent rights owned or
# freely licensable by each licensor hereunder covering either (i) the
# unmodified Software as contributed to or provided by such licensor, or (ii)
# the Larger Works (as defined below), to deal in both
#
# (a) the Software, and
#
# (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
# one is included with the Software each a "Larger Work" to which the Software
# is contributed by such licensors),
#
# without restriction, including without limitation the rights to copy, create
# derivative works of, display, perform, and distribute the Software and make,
# use, sell, offer for sale, import, export, have made, and have sold the
# Software and the Larger Work(s), and to sublicense the foregoing rights on
# either these or other terms.
#
# This license is subject to the following condition:
#
# The above copyright notice and either this complete permission notice or at a
# minimum a reference to the UPL must be included in all copies or substantial
# portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
import _imp
import sys
import _thread
capi = capi_to_java = None
_capi_hooks = []
def register_capi_hook(hook):
assert callable(hook)
if capi:
hook()
else:
_capi_hooks.append(hook)
def may_raise(error_result=native_null):
if isinstance(error_result, type(may_raise)):
# direct annotation
return may_raise(native_null)(error_result)
else:
def decorator(fun):
return make_may_raise_wrapper(fun, error_result)
return decorator
def Py_ErrorHandler():
return to_sulong(error_handler)
def Py_NotImplemented():
return NotImplemented
def Py_True():
return True
def Py_False():
return False
def Py_Ellipsis():
return ...
moduletype = type(sys)
def _PyModule_CreateInitialized_PyModule_New(name):
# see CPython's Objects/moduleobject.c - _PyModule_CreateInitialized for
# comparison how they handle _Py_PackageContext
if _imp._py_package_context:
if _imp._py_package_context.endswith(name):
name = _imp._py_package_context
_imp._py_package_context = None
new_module = moduletype(name)
# TODO: (tfel) I don't think this is the right place to set it, but somehow
# at least in the import of sklearn.neighbors.dist_metrics through
# sklearn.neighbors.ball_tree the __package__ attribute seems to be already
# set in CPython. To not produce a warning, I'm setting it here, although I
# could not find what CPython really does
if "." in name:
new_module.__package__ = name.rpartition('.')[0]
return new_module
def PyModule_SetDocString(module, string):
module.__doc__ = string
def PyModule_NewObject(name):
return moduletype(name)
@may_raise
def PyModule_GetNameObject(module_obj):
return module_obj.__name__
##################### DICT
def PyDict_New():
return {}
@may_raise
def PyDict_Next(dictObj, pos):
if not isinstance(dictObj, dict):
return native_null
curPos = 0
max = len(dictObj)
if pos >= max:
return native_null
for key in dictObj:
if curPos == pos:
return key, dictObj[key], hash(key)
curPos = curPos + 1
return native_null
@may_raise(-1)
def PyDict_Size(dictObj):
if not isinstance(dictObj, dict):
raise TypeError('expected dict, {!s} found'.format(type(dictObj)))
return len(dictObj)
@may_raise(None)
def PyDict_Copy(dictObj):
if not isinstance(dictObj, dict):
__bad_internal_call(None, None, dictObj)
return dictObj.copy()
@may_raise
def PyDict_GetItem(dictObj, key):
if not isinstance(dictObj, dict):
raise TypeError('expected dict, {!s} found'.format(type(dictObj)))
return dictObj.get(key, native_null)
@may_raise(-1)
def PyDict_SetItem(dictObj, key, value):
if not isinstance(dictObj, dict):
raise TypeError('expected dict, {!s} found'.format(type(dictObj)))
dictObj[key] = value
return 0
@may_raise(-1)
def PyDict_SetItem_KnownHash(dictObj, key, value, given_hash):
if not isinstance(dictObj, dict):
raise TypeError('expected dict, {!s} found'.format(type(dictObj)))
assert hash(key) == given_hash, "hash mismatch: known hash is different to computed hash"
dictObj[key] = value
return 0
@may_raise(-1)
def PyDict_DelItem(dictObj, key):
if not isinstance(dictObj, dict):
raise TypeError('expected dict, {!s} found'.format(type(dictObj)))
del dictObj[key]
return 0
@may_raise(-1)
def PyDict_Contains(dictObj, key):
if not isinstance(dictObj, dict):
__bad_internal_call(None, None, dictObj)
return key in dictObj
@may_raise(-1)
def PyDict_Merge(a, b, override):
if override:
a.update(b)
else:
for k in b:
if not k in a:
a[k] = b[k]
return 0
##################### SET, FROZENSET
@may_raise
def PySet_New(iterable):
if iterable:
return set(iterable)
else:
return set()
@may_raise(-1)
def PySet_Contains(anyset, item):
if not (isinstance(anyset, set) or isinstance(anyset, frozenset)):
__bad_internal_call(None, None, anyset)
return item in anyset
@may_raise
def PySet_Pop(anyset):
if not isinstance(anyset, set):
__bad_internal_call(None, None, anyset)
return anyset.pop()
@may_raise
def PyFrozenSet_New(iterable):
if iterable:
return frozenset(iterable)
else:
return frozenset()
@may_raise(-1)
def PySet_Discard(s, key):
if key in s:
s.discard(key)
return 1
return 0
##################### MAPPINGPROXY
def PyDictProxy_New(mapping):
mappingproxy = type(type.__dict__)
return mappingproxy(mapping)
def Py_DECREF(obj):
pass
def Py_INCREF(obj):
pass
def Py_XINCREF(obj):
pass
def PyObject_LEN(obj):
return len(obj)
def PyTruffle_Object_LEN(obj):
return len(to_java(obj))
##################### BYTES
def PyBytes_AsStringCheckEmbeddedNull(obj, encoding):
if not PyBytes_Check(obj):
raise TypeError('expected bytes, {!s} found'.format(type(obj)))
result = obj.decode(encoding)
for ch in obj:
if ch == 0:
raise ValueError('embedded null byte')
return result
def PyBytes_Size(obj):
return PyObject_Size(obj)
def PyBytes_Check(obj):
return isinstance(obj, bytes)
@may_raise
def PyBytes_Concat(original, newpart):
return original + newpart
def PyBytes_FromFormat(fmt, args):
formatted = fmt % args
return formatted.encode()
@may_raise
def PyBytes_Join(sep, iterable):
return sep.join(iterable)
@may_raise
def PyBytes_FromObject(obj):
if type(obj) == bytes:
return obj
if isinstance(obj, (list, tuple, memoryview)) or (not isinstance(obj, str) and hasattr(obj, "__iter__")):
return bytes(obj)
raise TypeError("cannot convert '%s' object to bytes" % type(obj).__name__)
##################### LIST
@may_raise
def PyList_New(size):
if size < 0:
__bad_internal_call(None, None, None)
return [None] * size
@may_raise
def PyList_GetItem(listObj, pos):
if not isinstance(listObj, list):
__bad_internal_call(None, None, listObj)
if pos < 0:
raise IndexError("list index out of range")
return listObj[pos]
@may_raise(-1)
def PyList_SetItem(listObj, pos, newitem):
if not isinstance(listObj, list):
__bad_internal_call(None, None, listObj)
if pos < 0:
raise IndexError("list assignment index out of range")
listObj[pos] = newitem
return 0
@may_raise(-1)
def PyList_Append(listObj, newitem):
if not isinstance(listObj, list):
__bad_internal_call(None, None, listObj)
listObj.append(newitem)
return 0
@may_raise
def PyList_AsTuple(listObj):
if not isinstance(listObj, list):
raise SystemError("expected list type")
return tuple(listObj)
@may_raise
def PyList_GetSlice(listObj, ilow, ihigh):
if not isinstance(listObj, list):
__bad_internal_call(None, None, listObj)
return listObj[ilow:ihigh]
@may_raise(-1)
def PyList_SetSlice(listObj, ilow, ihigh, s):
if not isinstance(listObj, list):
__bad_internal_call(None, None, listObj)
listObj[ilow:ihigh] = s
return 0
@may_raise(-1)
def PyList_Size(listObj):
if not isinstance(listObj, list):
__bad_internal_call(None, None, listObj)
return len(listObj)
@may_raise(-1)
def PyList_Sort(listObj):
if not isinstance(listObj, list):
__bad_internal_call(None, None, listObj)
listObj.sort()
return 0
##################### LONG
@may_raise(-1)
def PyLong_AsPrimitive(n, signed, size):
return TrufflePInt_AsPrimitive(int(n), signed, size)
def _PyLong_Sign(n):
if n==0:
return 0
elif n < 0:
return -1
else:
return 1
@may_raise
def PyLong_FromDouble(d):
return int(d)
@may_raise
def PyLong_FromString(string, base, negative):
result = int(string, base)
if negative:
return -result
else:
return result
##################### FLOAT
@may_raise
def PyFloat_FromDouble(n):
return float(n)
##################### COMPLEX
@may_raise
def PyComplex_AsCComplex(n):
obj = complex(n)
return (obj.real, obj.imag)
@may_raise(-1.0)
def PyComplex_RealAsDouble(n):
if isinstance(n, complex):
return n.real
return n.__float__()
def PyComplex_ImagAsDouble(n):
if isinstance(n, complex):
return n.imag
return 0.0
@may_raise
def PyComplex_FromDoubles(real, imag):
return complex(real, imag)
##################### NUMBER
def _safe_check(v, type_check):
try:
return type_check(v)
except:
return False
def PyNumber_Check(v):
return _safe_check(v, lambda x: isinstance(int(x), int)) or _safe_check(v, lambda x: isinstance(float(x), float))
@may_raise
def PyNumber_BinOp(v, w, binop):
if binop == 0:
return v + w
elif binop == 1:
return v - w
elif binop == 2:
return v * w
elif binop == 3:
return v / w
elif binop == 4:
return v << w
elif binop == 5:
return v >> w
elif binop == 6:
return v | w
elif binop == 7:
return v & w
elif binop == 8:
return v ^ w
elif binop == 9:
return v // w
elif binop == 10:
return v % w
elif binop == 12:
return v @ w
else:
raise SystemError("unknown binary operator (code=%s)" % binop)
def _binop_name(binop):
if binop == 0:
return "+"
elif binop == 1:
return "-"
elif binop == 2:
return "*"
elif binop == 3:
return "/"
elif binop == 4:
return "<<"
elif binop == 5:
return ">>"
elif binop == 6:
return "|"
elif binop == 7:
return "&"
elif binop == 8:
return "^"
elif binop == 9:
return "//"
elif binop == 10:
return "%"
elif binop == 12:
return "@"
@may_raise
def PyNumber_InPlaceBinOp(v, w, binop):
if binop == 0:
v += w
elif binop == 1:
v -= w
elif binop == 2:
v *= w
elif binop == 3:
v /= w
elif binop == 4:
v <<= w
elif binop == 5:
v >>= w
elif binop == 6:
v |= w
elif binop == 7:
v &= w
elif binop == 8:
v ^= w
elif binop == 9:
v //= w
elif binop == 10:
v %= w
elif binop == 12:
v @= w
else:
raise SystemError("unknown in-place binary operator (code=%s)" % binop)
# nothing else required; the operator will automatically fall back if
# no in-place operation is available
return v
@may_raise
def PyNumber_UnaryOp(v, unaryop):
if unaryop == 0:
return +v
elif unaryop == 1:
return -v
elif unaryop == 2:
return ~v
else:
raise SystemError("unknown unary operator (code=%s)" % unaryop)
@may_raise
def PyNumber_Index(v):
if not hasattr(v, "__index__"):
raise TypeError("'%s' object cannot be interpreted as an integer" % type(v))
result = v.__index__()
result_type = type(result)
if not isinstance(result, int):
raise TypeError("__index__ returned non-int (type %s)" % result_type)
if result_type is not int:
from warnings import warn
warn("__index__ returned non-int (type %s). The ability to return an instance of a strict subclass of int "
"is deprecated, and may be removed in a future version of Python." % result_type)
return result
@may_raise
def PyNumber_Long(v):
return int(v)
@may_raise
def PyNumber_Absolute(v):
return abs(v)
@may_raise
def PyNumber_Divmod(a, b):
return divmod(a, b)
@may_raise
def PyIter_Next(itObj):
try:
return next(itObj)
except StopIteration:
PyErr_Restore(None, None, None)
return native_null
@may_raise
def PyCallIter_New(it, sentinel):
return iter(it, sentinel)
##################### SEQUENCE
@may_raise
def PySequence_Tuple(obj):
return tuple(obj)
@may_raise
def PySequence_List(obj):
return list(obj)
@may_raise
def PySequence_GetItem(obj, key):
if not hasattr(obj, '__getitem__'):
raise TypeError("'%s' object does not support indexing)" % repr(obj))
if len(obj) < 0:
return native_null
return obj[key]
@may_raise(-1)
def PySequence_SetItem(obj, key, value):
if not hasattr(obj, '__setitem__'):
raise TypeError("'%s' object does not support item assignment)" % repr(obj))
if len(obj) < 0:
return -1
obj.__setitem__(key, value)
return 0
@may_raise
def PySequence_GetSlice(obj, low, high):
return obj[low:high]
@may_raise(-1)
def PySequence_Contains(haystack, needle):
return needle in haystack
@may_raise
def PySequence_Repeat(obj, n):
if not PyTruffle_IsSequence(obj):
raise TypeError("'%p' object can't be repeated", obj)
return obj * n
@may_raise
def PySequence_InPlaceRepeat(obj, n):
if not PyTruffle_IsSequence(obj):
raise TypeError("'%p' object can't be repeated", obj)
obj *= n
return obj
@may_raise
def PySequence_Concat(s, o):
if not (PyTruffle_IsSequence(s) and PyTruffle_IsSequence(o)):
raise TypeError("'%p' object can't be repeated", s)
return s + o
@may_raise
def PySequence_InPlaceConcat(s, o):
if not (PyTruffle_IsSequence(s) and PyTruffle_IsSequence(o)):
raise TypeError("'%p' object can't be repeated", s)
s += o
return s
##################### UNICODE
@may_raise
def PyUnicode_FromObject(o):
if not isinstance(o, str):
raise TypeError("Can't convert '%s' object to str implicitly" % type(o).__name__)
return str(o)
@may_raise(-1)
def PyUnicode_GetLength(o):
if not isinstance(o, str):
raise TypeError("bad argument type for built-in operation");
return len(o)
@may_raise
def PyUnicode_Concat(left, right):
if not isinstance(left, str):
raise TypeError("must be str, not %s" % type(left));
if not isinstance(right, str):
raise TypeError("must be str, not %s" % type(right));
return left + right
@may_raise
def PyUnicode_FromEncodedObject(obj, encoding, errors):
if isinstance(obj, bytes):
return obj.decode(encoding, errors)
if isinstance(obj, str):
raise TypeError("decoding str is not supported")
def PyUnicode_InternInPlace(s):
return sys.intern(s)
@may_raise
def PyUnicode_Format(format, args):
if not isinstance(format, str):
raise TypeError("Must be str, not %s" % type(format).__name__)
return format % args
@may_raise(-1)
def PyUnicode_FindChar(string, char, start, end, direction):
if not isinstance(string, str):
raise TypeError("Must be str, not %s" % type(string).__name__)
if direction > 0:
return string.find(chr(char), start, end)
else:
return string.rfind(chr(char), start, end)
@may_raise
def PyUnicode_Substring(string, start, end):
if not isinstance(string, str):
raise TypeError("Must be str, not %s" % type(string).__name__)
return string[start:end]
@may_raise
def PyUnicode_Join(separator, seq):
if not isinstance(separator, str):
raise TypeError("Must be str, not %s" % type(separator).__name__)
return separator.join(seq)
@may_raise(-1)
def PyUnicode_Compare(left, right):
if left == right:
return 0
elif left < right:
return -1
else:
return 1
_codecs_module = None
@may_raise
def PyUnicode_AsUnicodeEscapeString(string):
global _codecs_module
if not _codecs_module:
import _codecs as _codecs_module
return _codecs_module.unicode_escape_encode(string)[0]
@may_raise(-1)
def PyUnicode_Tailmatch(s, substr, start, end, direction):
if direction > 0:
return 1 if s[start:end].endswith(substr) else 0
return 1 if s[start:end].startswith(substr) else 0
##################### CAPSULE
class PyCapsule:
name = None
pointer = None
context = None
def __init__(self, name, pointer, destructor):
self.name = name
self.pointer = to_sulong(pointer)
def __repr__(self):
name = "NULL" if self.name is None else self.name
quote = "" if self.name is None else '"'
return "<capsule object %s%s%s at %p>" % (quote, name, quote, self.pointer)
@may_raise
def PyCapsule_GetContext(obj):
if not isinstance(obj, PyCapsule) or obj.pointer is None:
raise ValueError("PyCapsule_GetContext called with invalid PyCapsule object")
return obj.context
@may_raise(-1)
def PyCapsule_SetContext(obj, ptr):
if not isinstance(obj, PyCapsule):
raise ValueError("PyCapsule_SetContext called with invalid PyCapsule object")
obj.context = ptr
return 0
@may_raise
def PyCapsule_GetPointer(obj, name):
if not isinstance(obj, PyCapsule) or obj.pointer is None:
raise ValueError("PyCapsule_GetPointer called with invalid PyCapsule object")
if name != None and name != obj.name:
raise ValueError("PyCapsule_GetPointer called with incorrect name")
return obj.pointer
@may_raise
def PyCapsule_Import(name, no_block):
obj = None
mod = name.split(".")[0]
try:
obj = __import__(mod)
except:
raise ImportError('PyCapsule_Import could not import module "%s"' % name)
for attr in name.split(".")[1:]:
obj = getattr(obj, attr)
if PyCapsule_IsValid(obj, name):
return obj.pointer
else:
raise AttributeError('PyCapsule_Import "%s" is not valid' % name)
def PyCapsule_IsValid(obj, name):
return (isinstance(obj, PyCapsule) and
obj.pointer != None and
obj.name == name)
@may_raise
def PyCapsule_GetName(obj):
return obj.name
def PyModule_AddObject(m, k, v):
m.__dict__[k] = v
return None
@may_raise
def PyStructSequence_New(typ):
n = len(typ._fields)
return typ(*([None]*n))
namedtuple_type = None
@may_raise
def PyStructSequence_InitType2(type_name, type_doc, field_names, field_docs):
assert len(field_names) == len(field_docs)
global namedtuple_type
if not namedtuple_type:
from collections import namedtuple as namedtuple_type
new_type = namedtuple_type(type_name, field_names)
new_type.__doc__ = type_doc
for i in range(len(field_names)):
prop = getattr(new_type, field_names[i])
assert isinstance(prop, property)
prop.__doc__ = field_docs[i]
# ensure '_fields' attribute; required in 'PyStructSequence_New'
assert hasattr(new_type, "_fields")
return new_type
def METH_UNSUPPORTED(fun):
raise NotImplementedError("unsupported message type")
def METH_DIRECT(fun):
return fun
class _C:
def _m(self): pass
methodtype = type(_C()._m)
class modulemethod(methodtype):
def __new__(cls, mod, func):
return super().__new__(cls, mod, func)
class cstaticmethod():
def __init__(self, func):
self.__func__ = func
def __get__(self, instance, owner=None):
return methodtype(None, self.__func__)
def __call__(*args, **kwargs):
return self.__func__(None, *args, **kwargs)
def AddFunction(primary, tpDict, name, cfunc, cwrapper, wrapper, doc, isclass=False, isstatic=False):
owner = to_java_type(primary)
if isinstance(owner, moduletype):
# module case, we create the bound function-or-method
func = PyCFunction_NewEx(name, cfunc, cwrapper, wrapper, owner, owner.__name__, doc)
object.__setattr__(owner, name, func)
else:
func = wrapper(CreateFunction(name, cfunc, cwrapper, owner))
if isclass:
func = classmethod(func)
elif isstatic:
func = cstaticmethod(func)
PyTruffle_SetAttr(func, "__name__", name)
PyTruffle_SetAttr(func, "__doc__", doc)
type_dict = to_java(tpDict)
if name == "__init__":
def __init__(self, *args, **kwargs):
if func(self, *args, **kwargs) != 0:
raise TypeError("__init__ failed")
type_dict[name] = __init__
else:
type_dict[name] = func
def PyCFunction_NewEx(name, cfunc, cwrapper, wrapper, self, module, doc):
func = wrapper(CreateFunction(name, cfunc, cwrapper))
PyTruffle_SetAttr(func, "__name__", name)
PyTruffle_SetAttr(func, "__doc__", doc)
method = PyTruffle_BuiltinMethod(self, func)
PyTruffle_SetAttr(method, "__module__", to_java(module))
return method
def PyMethod_New(func, self):
# TODO we should use the method constructor
# e.g. methodtype(func, self)
def bound_function(*args, **kwargs):
return func(self, *args, **kwargs)
return bound_function
def AddMember(primary, tpDict, name, memberType, offset, canSet, doc):
# the ReadMemberFunctions and WriteMemberFunctions don't have a wrapper to
# convert arguments to Sulong, so we can avoid boxing the offsets into PInts
pclass = to_java_type(primary)
member = property()
getter = ReadMemberFunctions[memberType]
def member_getter(self):
return to_java(getter(to_sulong(self), TrufflePInt_AsPrimitive(offset, 1, 8)))
member.getter(member_getter)
if canSet:
setter = WriteMemberFunctions[memberType]
def member_setter(self, value):
setter(to_sulong(self), TrufflePInt_AsPrimitive(offset, 1, 8), to_sulong(value))
member.setter(member_setter)
member.__doc__ = doc
type_dict = to_java(tpDict)
type_dict[name] = member
getset_descriptor = type(type(AddMember).__code__)
def AddGetSet(primary, name, getter, getter_wrapper, setter, setter_wrapper, doc, closure):
pclass = to_java_type(primary)
fset = fget = None
if getter:
getter_w = CreateFunction(name, getter, getter_wrapper, pclass)
def member_getter(self):
# NOTE: The 'to_java' is intended and correct because this call will do a downcall an
# all args will go through 'to_sulong' then. So, if we don't convert the pointer
# 'closure' to a Python value, we will get the wrong wrapper from 'to_sulong'.
return capi_to_java(getter_w(self, to_java(closure)))
fget = member_getter
if setter:
setter_w = CreateFunction(name, setter, setter_wrapper, pclass)
def member_setter(self, value):
result = setter_w(self, value, closure)
if result != 0:
raise
return None
fset = member_setter
else:
fset = lambda self, value: GetSet_SetNotWritable(self, value, name)
getset = PyTruffle_GetSetDescriptor(fget=fget, fset=fset, name=name, owner=pclass)
PyTruffle_SetAttr(getset, "__doc__", doc)
PyTruffle_SetAttr(pclass, name, getset)
def GetSet_SetNotWritable(self, value, attr):
raise AttributeError("attribute '%s' of '%s' objects is not writable" % (attr, type(self).__name__))