#!/usr/bin/perl --
use strict; use warnings; use Data::Dump;
use Data::Rmap qw/ rmap_array  /;
use Tree::Visualize;
use Tree::Simple;
use Tree::Simple::Visitor::FromNestedArray;

my $root = [
  [
    [
      [
        [[["a", "b"], "c"], ["d", "e"]],
        [[["f", "g"], "h"], [["i", "j"], ["k", ["l", "m"]]]],
      ],
      ["n", [[["o", "p"], "q"], ["r", "s"]]],
    ],
    ["t", ["u", "v"]],
  ],
  [["w", ["x", "y"]], "z"],
];

dd $root;

rmap_array {
    my( $key, @rest ) = @$_;
    my @new;
    for my $one ( $key, @rest ){
        push @new, '' if ref $one;
        push @new, $one ;
    }
    $_ = \@new;
    return;
} $root;

dd $root;


my $visitor = Tree::Simple::Visitor::FromNestedArray->new();
$visitor->setArrayTree( $root );

my $tree = Tree::Simple->new(Tree::Simple->ROOT);
$tree->accept($visitor);

print Tree::Visualize->new(
    $tree,
    'ASCII',
    'TopDown',
#~     'Diagonal',  ## fail to throw exception
#~     'LeftSide',  ## fail to throw exception
#~     'RightSide', ## fail to throw exception
)->draw(), "\n\n";