--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/m-toolbox/classes/@smodel/plus.m	Wed Nov 23 19:22:13 2011 +0100
@@ -0,0 +1,82 @@
+% PLUS implements addition operator for smodel objects.
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% DESCRIPTION: PLUS implements addition operator for two smodel objects.
+%
+% CALL:        obj = obj1+obj2
+%              obj = plus(obj1,obj2);
+%
+% <a href="matlab:utils.helper.displayMethodInfo('smodel', 'plus')">Parameters Description</a>
+%
+% VERSION:     $Id: plus.m,v 1.10 2011/05/10 20:35:29 mauro Exp $
+%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+function varargout = plus(varargin)
+  
+  callerIsMethod = utils.helper.callerIsMethod;
+  
+  % Check if this is a call for parameters
+  if utils.helper.isinfocall(varargin{:})
+    varargout{1} = getInfo(varargin{3});
+    return
+  end
+  
+  % Settings
+  op     = 'plus';
+  opname = 'addition';
+  opsym  = '+';
+  
+  if callerIsMethod
+    pl = [];
+    infoObj = [];
+  else    
+    pl = getDefaultPlist();
+    infoObj = getInfo('None');
+  end
+  varNames = cell(size(varargin));
+  for ii = 1:nargin,varNames{ii} = inputname(ii);end
+  
+  if nargout == 0
+    error('### A %s operator can not be used as a modifier.', opname);
+  end
+  
+  mdl = smodel.elementOp(callerIsMethod, op, opname, opsym, infoObj, pl, varargin(:), varNames);
+  
+  % Set output
+  varargout = utils.helper.setoutputs(nargout, mdl);
+  
+end
+
+%--------------------------------------------------------------------------
+% Get Info Object
+%--------------------------------------------------------------------------
+function ii = getInfo(varargin)
+  
+  if nargin == 1 && strcmpi(varargin{1}, 'None')
+    sets = {};
+    pl  = [];
+  else
+    sets = {'Default'};
+    pl  = getDefaultPlist();
+  end
+  % Build info object
+  ii = minfo(mfilename, 'smodel', 'ltpda', utils.const.categories.aop, '$Id: plus.m,v 1.10 2011/05/10 20:35:29 mauro Exp $', sets, pl);
+  ii.setArgsmin(2);
+  ii.setModifier(false);
+end
+
+%--------------------------------------------------------------------------
+% Get Default Plist
+%--------------------------------------------------------------------------
+function plout = getDefaultPlist()
+  persistent pl;  
+  if ~exist('pl', 'var') || isempty(pl)
+    pl = buildplist();
+  end
+  plout = pl;  
+end
+
+function pl = buildplist()
+  pl = plist.EMPTY_PLIST;
+end