NAME

Config::Model::Role::ComputeFunction - compute &index or &element functions

VERSION

version 2.155

SYNOPSIS

            

              
              
$value->eval_function('index');
$value->eval_function('element');
$value->eval_function('index','-');
$value->eval_function('index','- -');
$value->eval_function('index','-3');
$value->compute_string('&element(-)')
$value->compute_string('&index(- -)');
            
          

DESCRIPTION

Role used to let a value object get the index or the element name of $self or of a node above.

METHODS

eval_function

Retrieve the index or the element name. Parameters are

            

              
              
( function_name , [ up  ])
            
          

function_name

element or index

up

Optional parameter to indicate how many level to go up before retrieving the index or element name. Each - is equivalent to a call to parent|Config::Model::Node/parent. Can be repeated dashes ("-", "- -", ...) or a dash with a multiplier ("-", "-2", ...). White spaces are ignored.

compute_string

Perform a similar function as eval_function using a string where function names are extracted.

E.g. compute_string('&element(-)') calls eval_function('element','-')

AUTHOR

Dominique Dumont

COPYRIGHT AND LICENSE

This software is Copyright (c) 2005-2022 by Dominique Dumont.

This is free software, licensed under:

            

              
              
The GNU Lesser General Public License, Version 2.1, February 1999