-# The MIT License (MIT)
-#
-# Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com>
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall 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.
-
-from bt2 import native_bt, object, utils
-import collections.abc
-import functools
-import numbers
-import math
-import abc
-import bt2
-
-
-def _handle_status(status, obj_name):
- if status >= 0:
- return
- else:
- raise RuntimeError('unexpected error')
-
-
-def _create_from_ptr(ptr):
- if ptr is None or ptr == native_bt.value_null:
- return
-
- typeid = native_bt.value_get_type(ptr)
- return _TYPE_TO_OBJ[typeid]._create_from_ptr(ptr)
-
-
-def _create_from_ptr_and_get_ref(ptr):
- if ptr is None or ptr == native_bt.value_null:
- return
-
- typeid = native_bt.value_get_type(ptr)
- return _TYPE_TO_OBJ[typeid]._create_from_ptr_and_get_ref(ptr)
-
-
-def create_value(value):
- if value is None:
- # null value object
- return
-
- if isinstance(value, _Value):
- return value
-
- if isinstance(value, bool):
- return BoolValue(value)
-
- if isinstance(value, int):
- return SignedIntegerValue(value)
-
- if isinstance(value, float):
- return RealValue(value)
-
- if isinstance(value, str):
- return StringValue(value)
-
- try:
- return MapValue(value)
- except:
- pass
-
- try:
- return ArrayValue(value)
- except:
- pass
-
- raise TypeError("cannot create value object from '{}' object".format(value.__class__.__name__))
-
-
-class _Value(object._SharedObject, metaclass=abc.ABCMeta):
- _get_ref = staticmethod(native_bt.value_get_ref)
- _put_ref = staticmethod(native_bt.value_put_ref)
-
- def __eq__(self, other):
- if other is None:
- # self is never the null value object
- return False
-
- # try type-specific comparison first
- spec_eq = self._spec_eq(other)
-
- if spec_eq is not None:
- return spec_eq
-
- if not isinstance(other, _Value):
- # not comparing apples to apples
- return False
-
- # fall back to native comparison function
- return native_bt.value_compare(self._ptr, other._ptr)
-
- def __ne__(self, other):
- return not (self == other)
-
- @abc.abstractmethod
- def _spec_eq(self, other):
- pass
-
- def _handle_status(self, status):
- _handle_status(status, self._NAME)
-
- def _check_create_status(self, ptr):
- if ptr is None:
- raise bt2.CreationError(
- 'cannot create {} value object'.format(self._NAME.lower()))
-
-
-@functools.total_ordering
-class _NumericValue(_Value):
- @staticmethod
- def _extract_value(other):
- if isinstance(other, _NumericValue):
- return other._value
-
- if other is True or other is False:
- return other
-
- if isinstance(other, numbers.Integral):
- return int(other)
-
- if isinstance(other, numbers.Real):
- return float(other)
-
- if isinstance(other, numbers.Complex):
- return complex(other)
-
- raise TypeError("'{}' object is not a number object".format(other.__class__.__name__))
-
- def __int__(self):
- return int(self._value)
-
- def __float__(self):
- return float(self._value)
-
- def __repr__(self):
- return repr(self._value)
-
- def __lt__(self, other):
- if not isinstance(other, numbers.Number):
- raise TypeError('unorderable types: {}() < {}()'.format(self.__class__.__name__,
- other.__class__.__name__))
-
- return self._value < float(other)
-
- def __le__(self, other):
- if not isinstance(other, numbers.Number):
- raise TypeError('unorderable types: {}() <= {}()'.format(self.__class__.__name__,
- other.__class__.__name__))
-
- return self._value <= float(other)
-
- def _spec_eq(self, other):
- pass
-
- def __eq__(self, other):
- if not isinstance(other, numbers.Number):
- return False
-
- return self._value == complex(other)
-
- def __rmod__(self, other):
- return self._extract_value(other) % self._value
-
- def __mod__(self, other):
- return self._value % self._extract_value(other)
-
- def __rfloordiv__(self, other):
- return self._extract_value(other) // self._value
-
- def __floordiv__(self, other):
- return self._value // self._extract_value(other)
-
- def __round__(self, ndigits=None):
- if ndigits is None:
- return round(self._value)
- else:
- return round(self._value, ndigits)
-
- def __ceil__(self):
- return math.ceil(self._value)
-
- def __floor__(self):
- return math.floor(self._value)
-
- def __trunc__(self):
- return int(self._value)
-
- def __abs__(self):
- return abs(self._value)
-
- def __add__(self, other):
- return self._value + self._extract_value(other)
-
- def __radd__(self, other):
- return self.__add__(other)
-
- def __neg__(self):
- return -self._value
-
- def __pos__(self):
- return +self._value
-
- def __mul__(self, other):
- return self._value * self._extract_value(other)
-
- def __rmul__(self, other):
- return self.__mul__(other)
-
- def __truediv__(self, other):
- return self._value / self._extract_value(other)
-
- def __rtruediv__(self, other):
- return self._extract_value(other) / self._value
-
- def __pow__(self, exponent):
- return self._value ** self._extract_value(exponent)
-
- def __rpow__(self, base):
- return self._extract_value(base) ** self._value
-
- def __iadd__(self, other):
- self.value = self + other
- return self
-
- def __isub__(self, other):
- self.value = self - other
- return self
-
- def __imul__(self, other):
- self.value = self * other
- return self
-
- def __itruediv__(self, other):
- self.value = self / other
- return self
-
- def __ifloordiv__(self, other):
- self.value = self // other
- return self
-
- def __imod__(self, other):
- self.value = self % other
- return self
-
- def __ipow__(self, other):
- self.value = self ** other
- return self
-
-
-class _IntegralValue(_NumericValue, numbers.Integral):
- def __lshift__(self, other):
- return self._value << self._extract_value(other)
-
- def __rlshift__(self, other):
- return self._extract_value(other) << self._value
-
- def __rshift__(self, other):
- return self._value >> self._extract_value(other)
-
- def __rrshift__(self, other):
- return self._extract_value(other) >> self._value
-
- def __and__(self, other):
- return self._value & self._extract_value(other)
-
- def __rand__(self, other):
- return self._extract_value(other) & self._value
-
- def __xor__(self, other):
- return self._value ^ self._extract_value(other)
-
- def __rxor__(self, other):
- return self._extract_value(other) ^ self._value
-
- def __or__(self, other):
- return self._value | self._extract_value(other)
-
- def __ror__(self, other):
- return self._extract_value(other) | self._value
-
- def __invert__(self):
- return ~self._value
-
- def __ilshift__(self, other):
- self.value = self << other
- return self
-
- def __irshift__(self, other):
- self.value = self >> other
- return self
-
- def __iand__(self, other):
- self.value = self & other
- return self
-
- def __ixor__(self, other):
- self.value = self ^ other
- return self
-
- def __ior__(self, other):
- self.value = self | other
- return self
-
-
-class _RealValue(_NumericValue, numbers.Real):
- pass
-
-
-class BoolValue(_Value):
- _NAME = 'Boolean'
-
- def __init__(self, value=None):
- if value is None:
- ptr = native_bt.value_bool_create()
- else:
- ptr = native_bt.value_bool_create_init(self._value_to_bool(value))
-
- self._check_create_status(ptr)
- super().__init__(ptr)
-
- def _spec_eq(self, other):
- if isinstance(other, numbers.Number):
- return self._value == bool(other)
-
- def __bool__(self):
- return self._value
-
- def __repr__(self):
- return repr(self._value)
-
- def _value_to_bool(self, value):
- if isinstance(value, BoolValue):
- value = value._value
-
- if not isinstance(value, bool):
- raise TypeError("'{}' object is not a 'bool' or 'BoolValue' object".format(value.__class__))
-
- return int(value)
-
- @property
- def _value(self):
- value = native_bt.value_bool_get(self._ptr)
- return value != 0
-
- def _set_value(self, value):
- native_bt.value_bool_set(self._ptr, self._value_to_bool(value))
-
- value = property(fset=_set_value)
-
-
-class _IntegerValue(_IntegralValue):
- def __init__(self, value=None):
- if value is None:
- ptr = self._create_default_value()
- else:
- ptr = self._create_value(self._value_to_int(value))
-
- self._check_create_status(ptr)
- super().__init__(ptr)
-
- def _value_to_int(self, value):
- if not isinstance(value, numbers.Real):
- raise TypeError('expecting a number object')
-
- value = int(value)
- self._check_int_range(value)
- return value
-
- @property
- def _value(self):
- return self._get_value(self._ptr)
-
- def _prop_set_value(self, value):
- self._set_value(self._ptr, self._value_to_int(value))
-
- value = property(fset=_prop_set_value)
-
-
-class UnsignedIntegerValue(_IntegerValue):
- _check_int_range = staticmethod(utils._check_uint64)
- _create_default_value = staticmethod(native_bt.value_unsigned_integer_create)
- _create_value = staticmethod(native_bt.value_unsigned_integer_create_init)
- _set_value = staticmethod(native_bt.value_unsigned_integer_set)
- _get_value = staticmethod(native_bt.value_unsigned_integer_get)
-
-
-class SignedIntegerValue(_IntegerValue):
- _check_int_range = staticmethod(utils._check_int64)
- _create_default_value = staticmethod(native_bt.value_signed_integer_create)
- _create_value = staticmethod(native_bt.value_signed_integer_create_init)
- _set_value = staticmethod(native_bt.value_signed_integer_set)
- _get_value = staticmethod(native_bt.value_signed_integer_get)
-
-
-class RealValue(_RealValue):
- _NAME = 'Real number'
-
- def __init__(self, value=None):
- if value is None:
- ptr = native_bt.value_real_create()
- else:
- value = self._value_to_float(value)
- ptr = native_bt.value_real_create_init(value)
-
- self._check_create_status(ptr)
- super().__init__(ptr)
-
- def _value_to_float(self, value):
- if not isinstance(value, numbers.Real):
- raise TypeError("expecting a real number object")
-
- return float(value)
-
- @property
- def _value(self):
- return native_bt.value_real_get(self._ptr)
-
- def _set_value(self, value):
- native_bt.value_real_set(self._ptr, self._value_to_float(value))
-
- value = property(fset=_set_value)
-
-
-@functools.total_ordering
-class StringValue(collections.abc.Sequence, _Value):
- _NAME = 'String'
-
- def __init__(self, value=None):
- if value is None:
- ptr = native_bt.value_string_create()
- else:
- ptr = native_bt.value_string_create_init(self._value_to_str(value))
-
- self._check_create_status(ptr)
- super().__init__(ptr)
-
- def _value_to_str(self, value):
- if isinstance(value, self.__class__):
- value = value._value
-
- utils._check_str(value)
- return value
-
- @property
- def _value(self):
- return native_bt.value_string_get(self._ptr)
-
- def _set_value(self, value):
- status = native_bt.value_string_set(self._ptr, self._value_to_str(value))
- self._handle_status(status)
-
- value = property(fset=_set_value)
-
- def _spec_eq(self, other):
- try:
- return self._value == self._value_to_str(other)
- except:
- return
-
- def __le__(self, other):
- return self._value <= self._value_to_str(other)
-
- def __lt__(self, other):
- return self._value < self._value_to_str(other)
-
- def __bool__(self):
- return bool(self._value)
-
- def __repr__(self):
- return repr(self._value)
-
- def __str__(self):
- return self._value
-
- def __getitem__(self, index):
- return self._value[index]
-
- def __len__(self):
- return len(self._value)
-
- def __iadd__(self, value):
- curvalue = self._value
- curvalue += self._value_to_str(value)
- self.value = curvalue
- return self
-
-
-class _Container:
- def __bool__(self):
- return len(self) != 0
-
- def __delitem__(self, index):
- raise NotImplementedError
-
-
-class ArrayValue(_Container, collections.abc.MutableSequence, _Value):
- _NAME = 'Array'
-
- def __init__(self, value=None):
- ptr = native_bt.value_array_create()
- self._check_create_status(ptr)
- super().__init__(ptr)
-
- # Python will raise a TypeError if there's anything wrong with
- # the iterable protocol.
- if value is not None:
- for elem in value:
- self.append(elem)
-
- def _spec_eq(self, other):
- try:
- if len(self) != len(other):
- # early mismatch
- return False
-
- for self_elem, other_elem in zip(self, other):
- if self_elem != other_elem:
- return False
-
- return True
- except:
- return
-
- def __len__(self):
- size = native_bt.value_array_get_size(self._ptr)
- assert(size >= 0)
- return size
-
- def _check_index(self, index):
- # TODO: support slices also
- if not isinstance(index, numbers.Integral):
- raise TypeError("'{}' object is not an integral number object: invalid index".format(index.__class__.__name__))
-
- index = int(index)
-
- if index < 0 or index >= len(self):
- raise IndexError('array value object index is out of range')
-
- def __getitem__(self, index):
- self._check_index(index)
- ptr = native_bt.value_array_borrow_element_by_index(self._ptr, index)
- assert(ptr)
- return _create_from_ptr_and_get_ref(ptr)
-
- def __setitem__(self, index, value):
- self._check_index(index)
- value = create_value(value)
-
- if value is None:
- ptr = native_bt.value_null
- else:
- ptr = value._ptr
-
- status = native_bt.value_array_set_element_by_index(
- self._ptr, index, ptr)
- self._handle_status(status)
-
- def append(self, value):
- value = create_value(value)
-
- if value is None:
- ptr = native_bt.value_null
- else:
- ptr = value._ptr
-
- status = native_bt.value_array_append_element(self._ptr, ptr)
- self._handle_status(status)
-
- def __iadd__(self, iterable):
- # Python will raise a TypeError if there's anything wrong with
- # the iterable protocol.
- for elem in iterable:
- self.append(elem)
-
- return self
-
- def __repr__(self):
- return '[{}]'.format(', '.join([repr(v) for v in self]))
-
- def insert(self, value):
- raise NotImplementedError
-
-
-class _MapValueKeyIterator(collections.abc.Iterator):
- def __init__(self, map_obj):
- self._map_obj = map_obj
- self._at = 0
- keys_ptr = native_bt.value_map_get_keys(map_obj._ptr)
-
- if keys_ptr is None:
- raise RuntimeError('unexpected error: cannot get map value object keys')
-
- self._keys = _create_from_ptr(keys_ptr)
-
- def __next__(self):
- if self._at == len(self._map_obj):
- raise StopIteration
-
- key = self._keys[self._at]
- self._at += 1
- return str(key)
-
-
-class MapValue(_Container, collections.abc.MutableMapping, _Value):
- _NAME = 'Map'
-
- def __init__(self, value=None):
- ptr = native_bt.value_map_create()
- self._check_create_status(ptr)
- super().__init__(ptr)
-
- # Python will raise a TypeError if there's anything wrong with
- # the iterable/mapping protocol.
- if value is not None:
- for key, elem in value.items():
- self[key] = elem
-
- def __eq__(self, other):
- return _Value.__eq__(self, other)
-
- def __ne__(self, other):
- return _Value.__ne__(self, other)
-
- def _spec_eq(self, other):
- try:
- if len(self) != len(other):
- # early mismatch
- return False
-
- for self_key in self:
- if self_key not in other:
- return False
-
- self_value = self[self_key]
- other_value = other[self_key]
-
- if self_value != other_value:
- return False
-
- return True
- except:
- return
-
- def __len__(self):
- size = native_bt.value_map_get_size(self._ptr)
- assert(size >= 0)
- return size
-
- def __contains__(self, key):
- self._check_key_type(key)
- return native_bt.value_map_has_entry(self._ptr, key)
-
- def _check_key_type(self, key):
- utils._check_str(key)
-
- def _check_key(self, key):
- if key not in self:
- raise KeyError(key)
-
- def __getitem__(self, key):
- self._check_key(key)
- ptr = native_bt.value_map_borrow_entry_value(self._ptr, key)
- assert(ptr)
- return _create_from_ptr_and_get_ref(ptr)
-
- def __iter__(self):
- return _MapValueKeyIterator(self)
-
- def __setitem__(self, key, value):
- self._check_key_type(key)
- value = create_value(value)
-
- if value is None:
- ptr = native_bt.value_null
- else:
- ptr = value._ptr
-
- status = native_bt.value_map_insert_entry(self._ptr, key, ptr)
- self._handle_status(status)
-
- def __repr__(self):
- items = ['{}: {}'.format(repr(k), repr(v)) for k, v in self.items()]
- return '{{{}}}'.format(', '.join(items))
-
-
-_TYPE_TO_OBJ = {
- native_bt.VALUE_TYPE_BOOL: BoolValue,
- native_bt.VALUE_TYPE_UNSIGNED_INTEGER: UnsignedIntegerValue,
- native_bt.VALUE_TYPE_SIGNED_INTEGER: SignedIntegerValue,
- native_bt.VALUE_TYPE_REAL: RealValue,
- native_bt.VALUE_TYPE_STRING: StringValue,
- native_bt.VALUE_TYPE_ARRAY: ArrayValue,
- native_bt.VALUE_TYPE_MAP: MapValue,
-}
projects / babeltrace.git / blobdiff