92 lines
2.6 KiB
Python
92 lines
2.6 KiB
Python
#! /usr/bin/env python
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# -*- coding: utf-8 -*-
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# vim:fenc=utf-8
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#
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# Copyright © 2017 lafrite <lafrite@Poivre>
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#
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# Distributed under terms of the MIT license.
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"""
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Computing with MO
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"""
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from .exceptions import ComputeError
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from .add import add
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from .divide import divide
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from .minus import minus
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from .multiply import multiply
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from .power import power
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from ..MO import MOnumber, MOstr
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from ..MO.fraction import MOFraction
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from ..MO.monomial import MOstrPower, MOMonomial
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from ..MO.polynomial import MOpolynomial
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from itertools import product
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from tabulate import tabulate
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MOS = [MOnumber, MOstr, MOFraction, MOstrPower, MOMonomial, MOpolynomial]
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OPERATIONS = {"+": add, "-": minus, "*": multiply, "/": divide, "^": power}
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def compute(node, left_v, right_v):
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"""
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Computing a node
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:example:
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>>> from ..MO import MOnumber
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>>> compute("+", MOnumber(1), MOnumber(2))
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<MOnumber 3>
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>>> compute("-", None, MOnumber(2))
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<MOnumber -2>
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>>> compute("*", MOnumber(1), MOnumber(2))
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<MOnumber 2>
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>>> compute("~", MOnumber(1), MOnumber(2))
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Traceback (most recent call last):
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...
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mapytex.calculus.core.compute.exceptions.ComputeError: Unknown operation (~) in compute
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"""
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try:
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operation = OPERATIONS[node]
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except KeyError:
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raise ComputeError(f"Unknown operation ({node}) in compute")
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return operation(left_v, right_v)
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def compute_capacities(node):
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""" Test an operation through all MOs
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:param operation: string which represent an (mo, mo) -> mo
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:returns: { (motype, motype): True/False } when it's implemented
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:example:
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>>> compute_capacities("+")
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[['+', 'MOnumber', 'MOstr', 'MOFraction', 'MOstrPower', 'MOMonomial', 'MOpolynomial'], ['MOnumber', True, False, True, False, False, True], ['MOstr', False, True, False, False, True, True], ['MOFraction', True, False, True, False, False, True], ['MOstrPower', False, False, False, True, True, True], ['MOMonomial', False, True, False, True, True, True], ['MOpolynomial', True, True, True, True, True, True]]
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"""
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op = OPERATIONS[node]
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lines = [[node] + [mo.__name__ for mo in MOS]]
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for left_mo in MOS:
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lines.append([left_mo.__name__] +
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[(left_mo, i) in op.funcs for i in MOS])
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return lines
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def describe_compute():
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""" Explain which operation are handle by compue """
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ans = "Implemented compute operations among MOs"
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for op in OPERATIONS:
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ans += "\n"
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ans += tabulate(compute_capacities(op), tablefmt="grid")
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return ans
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# -----------------------------
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# Reglages pour 'vim'
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# vim:set autoindent expandtab tabstop=4 shiftwidth=4:
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# cursor: 16 del
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