[Octave-bug-tracker] [bug #62011] addRequired of inputParser raising "protected access" error

[anonymous]

URL:
  <https://savannah.gnu.org/bugs/?62011>

                 Summary: addRequired of inputParser raising "protected
access" error
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Tue 08 Feb 2022 01:43:06 PM UTC
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: 6.4.0
         Discussion Lock: Any
        Operating System: GNU/Linux

    _______________________________________________________

Details:

The example for the usage of inputParser from the manual is not executable and
gives some strange error. The function code is copypasted (only renamed):


function parsertest (varargin)
  p = inputParser ();                      # create object
  p.FunctionName = "parsertest";                # set function name
  p.addRequired ("pack", @ischar);         # mandatory argument
  p.addOptional ("path", pwd(), @ischar);  # optional argument

  ## create a function handle to anonymous functions for validators
  val_mat = @(x) isvector (x) && all (x <= 1) && all (x >= 0);
  p.addOptional ("mat", [0 0], val_mat);

  ## create two arguments of type "Parameter"
  val_type = @(x) any (strcmp (x, {"linear", "quadratic"}));
  p.addParameter ("type", "linear", val_type);
  val_verb = @(x) any (strcmp (x, {"low", "medium", "high"}));
  p.addParameter ("tolerance", "low", val_verb);

  ## create a switch type of argument
  p.addSwitch ("verbose");

  p.parse (varargin{:});  # Run created parser on inputs

  ## the rest of the function can access inputs by using p.Results.
  ## for example, get the tolerance input with p.Results.tolerance
endfunction


Now calling the function as described in the manual gives an error:


parsertest("mech")
error: subsref: property 'Optional' has protected access and cannot be
obtained in this context
error: called from
    addRequired at line 230 column 7
    parsertest at line 4 column 3


I'm not sure whether this is a bug inside addRequired or a wrong description
in the manual…




    _______________________________________________________

Reply to this item at:

  <https://savannah.gnu.org/bugs/?62011>

_______________________________________________
  Message sent via Savannah
  https://savannah.gnu.org/