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use strict;
sub WalkTree
{
my $tree = shift; # a Pod::Tree object
my $root = $tree->get_root; # the root node of the tree
WalkNode($root);
}
sub WalkNode
{
my $node = shift;
my $type = $node->get_type;
for ($type)
{
/root/ and WalkRoot ($node), last;
/verbatim/ and WalkVerbatim($node), last;
/ordinary/ and WalkOrdinary($node), last;
/command/ and WalkCommand ($node), last;
/sequence/ and WalkSequence($node), last;
/text/ and WalkText ($node), last;
/list/ and WalkList ($node), last;
/item/ and WalkItem ($node), last;
/for/ and WalkFor ($node), last;
}
}
sub WalkRoot
{
my $node = shift;
WalkChildren($node);
}
sub WalkVerbatim
{
my $node = shift;
my $text = $node->get_text;
}
sub WalkOrdinary
{
my $node = shift;
WalkChildren($node);
}
sub WalkCommand
{
my $node = shift;
my $command = node->get_command;
WalkChildren($node);
}
sub WalkSequence
{
my $node = shift;
my $letter = node->get_letter;
is_link $node and do
{
my $target = $node->get_target;
my $page = $target->get_page;
my $section = $target->get_section;
};
WalkChildren($node);
}
sub WalkText
{
my $node = shift;
my $text = $node->get_text;
}
sub WalkList
{
my $node = shift;
my $indent = $node->get_arg;
my $list_type = $node->get_list_type;
for ($list_type)
{
/bullet/ and last;
/number/ and last;
/text/ and last;
}
WalkChildren($node); # text of the =over paragraph
WalkSiblings($node); # items in the list
}
sub WalkItem
{
my $node = shift;
my $item_type = $node->get_list_type;
for ($item_type) # could be different from $list_type
{
/bullet/ and last;
/number/ and last;
/text/ and last;
}
WalkChildren($node); # text of the =item paragraph
}
sub WalkFor
{
my $node = shift;
my $formatter = $node->get_arg;
my $text = $node->get_text;
}
sub WalkChildren
{
my $node = shift;
my $children = $node->get_children;
for my $child (@$children)
{
WalkNode($child);
}
}
sub WalkSiblings
{
my $node = shift;
my $siblings = $node->get_siblings;
for my $sibling (@$siblings)
{
WalkNode($sibling);
}
}
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