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rINSTCONTROL/@MyClassParser/MyClassParser.m
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MyClassParser.m
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% Input parser, which functionality was extended to automatically add
% class properties to the scheme and assign the results after parsing is
% done.
classdef MyClassParser < inputParser
methods (Access = public)
function this = MyClassParser(varargin)
this@inputParser();
if nargin() == 1
% If an object is supplied via varargin, add its properties
% to the parser scheme
addClassProperties(this, varargin{1});
end
end
% Add all the properties the class which are not already present
% in the scheme of the parser and which have set access
% permitted for MyClassParser
function addClassProperties(this, Obj)
ObjMetaclass = metaclass(Obj);
for i=1:length(ObjMetaclass.PropertyList)
Tmp = ObjMetaclass.PropertyList(i);
% If parameter is already present in the parser scheme,
% skip
if ismember(Tmp.Name, this.Parameters)
continue
end
% Constant, Dependent and Abstract propeties cannot be set,
% so skip in this case also.
if Tmp.Constant || Tmp.Abstract|| ...
(Tmp.Dependent && isempty(Tmp.SetMethod))
continue
end
% Check if the parser has access to the property. This
% can be true in two cases: 1) SetAccess is public
% 2) MyClassParser class was explicitly given access
sa = Tmp.SetAccess;
if ischar(sa)
has_access = strcmpi(sa,'public');
elseif iscell(sa)
% Case when SetAcces is specified as cell array of
% metaclasses
has_access = any(...
cellfun(@(x) strcmpi(x.Name, class(this)),sa));
else
has_access=false;
end
% If the property has set access and default value,
% add it as parameter to the parser scheme
if has_access
if Tmp.HasDefault
def = Tmp.DefaultValue;
% Create validation function based on the class of
% default value
validationFcn = @(x)assert(isa(x, class(def)),...
['The value must be of the class ' ...
class(def) ' while the present one is ' ...
'of the class ' class(x) '.']);
opt_vars = {def, validationFcn};
else
def = [];
opt_vars = {def};
end
addParameter(this, Tmp.Name, opt_vars{:});
end
end
end
% parse varargin and assign results to class properties
% with the same names as parameters
function processInputs(this, Obj, varargin)
parse(this, varargin{:});
% assign results that have associated class properties with
% public set access
for i=1:length(this.Parameters)
par = this.Parameters{i};
if ~ismember(par, this.UsingDefaults) && isprop(Obj, par)
try
Obj.(par) = this.Results.(par);
catch ME
warning(['Value of the input parameter ''' par ...
''' could not be assigned to property. ' ...
ME.message])
end
end
end
end
end
end
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