# Source code for MDAnalysis.topology.MinimalParser

    # -*- Mode: python; tab-width: 4; indent-tabs-mode:nil; coding: utf-8 -*-
    # vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4
    #
    # MDAnalysis --- http://www.mdanalysis.org
    # Copyright (c) 2006-2017 The MDAnalysis Development Team and contributors
    # (see the file AUTHORS for the full list of names)
    #
    # Released under the Lesser GNU Public Licence, v2.1 or any higher version
    #
    # Please cite your use of MDAnalysis in published work:
    #
    # R. J. Gowers, M. Linke, J. Barnoud, T. J. E. Reddy, M. N. Melo, S. L. Seyler,
    # D. L. Dotson, J. Domanski, S. Buchoux, I. M. Kenney, and O. Beckstein.
    # MDAnalysis: A Python package for the rapid analysis of molecular dynamics
    # simulations. In S. Benthall and S. Rostrup editors, Proceedings of the 15th
    # Python in Science Conference, pages 102-109, Austin, TX, 2016. SciPy.
    # doi: 10.25080/majora-629e541a-00e
    #
    # N. Michaud-Agrawal, E. J. Denning, T. B. Woolf, and O. Beckstein.
    # MDAnalysis: A Toolkit for the Analysis of Molecular Dynamics Simulations.
    # J. Comput. Chem. 32 (2011), 2319--2327, doi:10.1002/jcc.21787
    #

    """
    Minimal topology parser
    =======================

    Parses only the number of atoms from a coordinate/trajectory file.
    This minimal topology can be used to access coordinate data without the need
    for a full-fledged topology file.

    Classes
    -------

    .. autoclass:: MinimalParser
       :members:
       :inherited-members:

    """

    from ..core._get_readers import get_reader_for
    from ..core.topology import Topology
    from .base import TopologyReaderBase

    class MinimalParser(TopologyReaderBase):
        """Produces a minimal topology from only the number of atoms.

        This requires that the number of atoms be given in one of two ways:
         - The number of atoms can be given as the 'n_atoms' keyword argument.
         - If this is not given, then a Reader object for the filename will be
           created and the `parse_n_atoms` method on this Reader will be called,
           (requiring that the Reader has this capability).

        This requires that the coordinate format has
        """

        format = "MINIMAL"

        def parse(self, **kwargs):
            """Return the minimal *Topology* object"""
            try:
                n_atoms = kwargs["n_atoms"]
            except KeyError:
                reader = get_reader_for(self.filename)
                n_atoms = reader.parse_n_atoms(self.filename, **kwargs)

            return Topology(n_atoms, 1, 1)