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128 lines
3.1 KiB
128 lines
3.1 KiB
# -*- coding: utf-8 -*-
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# © 2014-2015 ACSONE SA/NV (<http://acsone.eu>)
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# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
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""" A trivial immutable array that supports basic arithmetic operations.
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>>> a = SimpleArray((1.0, 2.0, 3.0))
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>>> b = SimpleArray((4.0, 5.0, 6.0))
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>>> t = (4.0, 5.0, 6.0)
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>>> +a
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SimpleArray((1.0, 2.0, 3.0))
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>>> -a
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SimpleArray((-1.0, -2.0, -3.0))
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>>> a + b
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SimpleArray((5.0, 7.0, 9.0))
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>>> b + a
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SimpleArray((5.0, 7.0, 9.0))
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>>> a + t
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SimpleArray((5.0, 7.0, 9.0))
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>>> t + a
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SimpleArray((5.0, 7.0, 9.0))
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>>> a - b
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SimpleArray((-3.0, -3.0, -3.0))
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>>> a - t
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SimpleArray((-3.0, -3.0, -3.0))
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>>> t - a
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SimpleArray((3.0, 3.0, 3.0))
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>>> a * b
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SimpleArray((4.0, 10.0, 18.0))
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>>> b * a
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SimpleArray((4.0, 10.0, 18.0))
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>>> a * t
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SimpleArray((4.0, 10.0, 18.0))
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>>> t * a
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SimpleArray((4.0, 10.0, 18.0))
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>>> a / b
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SimpleArray((0.25, 0.4, 0.5))
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>>> b / a
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SimpleArray((4.0, 2.5, 2.0))
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>>> a / t
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SimpleArray((0.25, 0.4, 0.5))
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>>> t / a
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SimpleArray((4.0, 2.5, 2.0))
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>>> b / 2
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SimpleArray((2.0, 2.5, 3.0))
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>>> 2 * b
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SimpleArray((8.0, 10.0, 12.0))
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>>> b += 2 ; b
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SimpleArray((6.0, 7.0, 8.0))
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>>> a / ((1.0, 0.0, 1.0))
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SimpleArray((1.0, DataError(), 3.0))
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>>> a / 0.0
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SimpleArray((DataError(), DataError(), DataError()))
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"""
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import operator
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import traceback
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from .data_error import DataError
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__all__ = ['SimpleArray']
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class SimpleArray(tuple):
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def _op(self, op, other):
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def _o2(x, y):
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try:
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return op(x, y)
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except ZeroDivisionError:
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return DataError('#DIV/0', traceback.format_exc())
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except:
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return DataError('#ERR', traceback.format_exc())
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if isinstance(other, tuple):
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if len(other) != len(self):
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raise TypeError("tuples must have same length for %s" % op)
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return SimpleArray(map(_o2, self, other))
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else:
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return SimpleArray(map(lambda z: _o2(z, other), self))
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def __add__(self, other):
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return self._op(operator.add, other)
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__radd__ = __add__
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def __pos__(self):
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return SimpleArray(map(operator.pos, self))
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def __neg__(self):
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return SimpleArray(map(operator.neg, self))
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def __sub__(self, other):
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return self._op(operator.sub, other)
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def __rsub__(self, other):
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return SimpleArray(other)._op(operator.sub, self)
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def __mul__(self, other):
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return self._op(operator.mul, other)
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__rmul__ = __mul__
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def __div__(self, other):
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return self._op(operator.div, other)
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def __floordiv__(self, other):
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return self._op(operator.floordiv, other)
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def __truediv__(self, other):
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return self._op(operator.truediv, other)
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def __rdiv__(self, other):
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return SimpleArray(other)._op(operator.div, self)
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def __rfloordiv__(self, other):
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return SimpleArray(other)._op(operator.floordiv, self)
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def __rtruediv__(self, other):
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return SimpleArray(other)._op(operator.truediv, self)
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def __repr__(self):
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return "SimpleArray(%s)" % tuple.__repr__(self)
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if __name__ == '__main__':
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import doctest
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doctest.testmod()
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