Added append method in dynDates class (with unitary tests).

matlab/@dynDate/isempty.m

+function b = isempty(a)
+
+%@info:
+%! @deftypefn {Function File} {@var{b} =} isempty (@var{a})
+%! @anchor{@dynDate/isempty}
+%! @sp 1
+%! Overloads the isempty function for the @ref{dynDate} class.
+%! @sp 2
+%! @strong{Inputs}
+%! @sp 1
+%! @table @ @var
+%! @item a
+%! Dynare date object instantiated by @ref{dynDate}.
+%! @end table
+%! @sp 1
+%! @strong{Outputs}
+%! @sp 1
+%! @table @ @var
+%! @item b
+%! Integer scalar (equal to zero if @var{a} is not empty).
+%! @end table
+%! @sp 2
+%! @strong{This function is called by:}
+%! @sp 2
+%! @strong{This function calls:}
+%! @sp 2
+%! @end deftypefn
+%@eod:
+
+% Copyright (C) 2012 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/>.
+
+% Original author: stephane DOT adjemian AT univ DASH lemans DOT fr
+
+if ~isa(a,'dynDate')
+    error(['dynDate::isempty: Input argument ' inputname(1) ' have to be a dynDate object!'])
+end
+
+b = all(isnan(a.time));
\ No newline at end of file

matlab/@dynDates/append.m

+function dd = append(dd,a)
+% sort method for dynDates class.
+
+%@info:
+%! @deftypefn {Function File} {@var{dd} =} sort (@var{dd}, @var{a})
+%! @anchor{dynDates/append}
+%! @sp 1
+%! Append method for the Dynare dates class.
+%! @sp 2
+%! @strong{Inputs}
+%! @sp 1
+%! @table @ @var
+%! @item dd
+%! Object instantiated by @ref{dynDates}.
+%! @item a
+%! Object instantiated by @ref{dynDate}.
+%! @end table
+%! @sp 2
+%! @strong{Outputs}
+%! @sp 1
+%! @table @ @var
+%! @item dd
+%! Object instantiated by @ref{dynDates}, with an additional date (@var{a}).
+%! @end table
+%! @sp 2
+%! @strong{This function is called by:}
+%! @sp 2
+%! @strong{This function calls:}
+%!
+%! @end deftypefn
+%@eod:
+
+% Copyright (C) 2012 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/>.
+
+% AUTHOR(S) stephane DOT adjemian AT univ DASH lemans DOT fr
+
+if ~isa(dd,'dynDates')
+    error(['dynDates::append: Input argument ' inputname(dd) ' has to be a dynDates object.'])
+end
+
+if ~isa(a,'dynDate') || ischar(a)
+    error(['dynDates::append: Input argument ' inputname(a) ' has to be a dynDate object or a string (formatted date).'])
+end
+
+if isempty(a)
+    return
+end
+
+if isa(a,'dynDate')
+    dd.time = [dd.time; a.time];
+    dd.ndat = dd.ndat+1;
+else
+    tmp = dynDate();
+    dd.time = [dd.time; tmp(a).time];
+    dd.ndat = dd.ndat+1;
+end
+
+%@test:1
+%$ % Define some dates
+%$ B1 = '1953Q4';
+%$ B2 = '1950Q2';
+%$ B3 = '1950Q1';
+%$ B4 = '1945Q3';
+%$ B5 = '2009Q2';
+%$
+%$ % Define expected results.
+%$ e.time = [1945 3; 1950 1; 1950 2; 1953 4; 2009 2];
+%$ e.freq = 4;
+%$ e.ndat = 5;
+%$
+%$ % Call the tested routine.
+%$ d = dynDates(B4,B3,B2,B1);
+%$ d = d.append(dynDate(B5));
+%$
+%$ % Check the results.
+%$ t(1) = dyn_assert(d.time,e.time);
+%$ t(2) = dyn_assert(d.freq,e.freq);
+%$ t(3) = dyn_assert(d.ndat,e.ndat);
+%$ T = all(t);
+%@eof:1
\ No newline at end of file

matlab/@dynDates/subsref.m

@@ -55,7 +55,7 @@ if isequal(S(1).type,'.')
     switch S(1).subs
       case {'time','freq','ndat'}                                   % Public members.
         B = builtin('subsref', A, S(1));
-      case {'sort'}                                                 % Give "dot access" to public methods.
+      case {'sort','append'}                                        % Give "dot access" to public methods.
         if length(S)==1
             B = feval(S(1).subs,A);
         else