function A = subsref(A, S)
%function A = subsref(A, S)

% Copyright (C) 2013 Dynare Team
%
% This file is part of Dynare.
%
% Dynare is free software: you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation, either version 3 of the License, or
% (at your option) any later version.
%
% Dynare is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with Dynare.  If not, see <http://www.gnu.org/licenses/>.

switch S(1).type
    case '.'
        switch S(1).subs
            case fieldnames(A)
                A = A.(S(1).subs);
            case methods(A)
                if areParensNext(S)
                    A = feval(S(1).subs, A, S(2).subs{:});
                    S = shiftS(S);
                else
                    A = feval(S(1).subs, A);
                end
            otherwise
                error(['@graph.subsref: unknown field or method: ' S(1).subs]);
        end
    case '()'
        A = A.seriesElements.getSeriesElements(S(1).subs{:});
    case '{}'
        error(['@graph.subsref: ' S(1).type ' indexing not supported.']);
    otherwise
        error('@graph.subsref: impossible case')
end

S = shiftS(S);
if length(S) >= 1
    A = subsref(A, S);
end
end
