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#!/usr/bin/perl
# Copyright 2022 Jeffrey Kegler
# This file is part of Marpa::R2. Marpa::R2 is free software: you can
# redistribute it and/or modify it under the terms of the GNU Lesser
# General Public License as published by the Free Software Foundation,
# either version 3 of the License, or (at your option) any later version.
#
# Marpa::R2 is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser
# General Public License along with Marpa::R2. If not, see
# http://www.gnu.org/licenses/.
use 5.010001;
use Pod::Simple::SimpleTree;
use Data::Dumper;
my $filename = shift;
my $tree = Pod::Simple::SimpleTree->new->parse_file($filename)->root;
my %headers = ();
sub find_header {
my ($subtree) = @_;
if (ref $subtree eq 'ARRAY') {
if (substr($subtree->[0], 0, 4) eq 'head') {
$headers{$subtree->[2]} = 1;
# say $subtree->[2];
}
if ($subtree->[0] eq 'L') {
my $hash = $subtree->[1];
return if not $hash->{type} eq 'pod';
return if exists $hash->{to};
return if not exists $hash->{section};
push @section_ref, $hash->{section};
}
find_header($_) for @{$subtree};
}
return;
}
# say Dumper($tree);
find_header($tree);
for my $section_ref (@section_ref) {
if (not exists $headers{$section_ref})
{
say STDERR "Unresolved internal section reference: $section_ref"
}
}
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