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module Pod::To::Text;

sub pod2text($pod) is export {
    my @declarators;
    given $pod {
        when Pod::Heading { heading2text($pod) }
        when Pod::Block::Code { code2text($pod) }
        when Pod::Block::Named { named2text($pod) }
        when Pod::Block::Para { para2text($pod) }
        when Pod::Block::Declarator { declarator2text($pod) }
        when Pod::Item { item2text($pod) }
        when Positional { $pod.map({pod2text($_)}).join("\n\n")}
        default { $pod.Str }
    }
}

sub heading2text($pod) {
    given $pod.level {
        when 1 { pod2text($pod.content) }
        when 2 { ' ' ~ pod2text($pod.content) }
        default { ' ' ~ pod2text($pod.content) }
    }
}

sub code2text($pod) {
    " " ~ $pod.content.subst(/\n/, "\n ", :g)
}

sub item2text($pod) {
    ' * ' ~ pod2text($pod.content).chomp.chomp
}

sub named2text($pod) {
    $pod.name eq 'pod' ?? pod2text($pod.content) !! para2text($pod)
}

sub para2text($pod) {
    $pod.content.join("\n")
}

sub declarator2text($pod) {
    next unless $pod.WHEREFORE.WHY;
    do given $pod.WHEREFORE {
        when Method {
            'method'
        }
        when Sub {
            'sub'
        }
        when nqp::p6bool(nqp::istype($_.HOW, Metamodel::ClassHOW)) {
            'class'
        }
        when nqp::p6bool(nqp::istype($_.HOW, Metamodel::ModuleHOW)) {
            'module'
        }
        when nqp::p6bool(nqp::istype($_.HOW, Metamodel::PackageHOW)) {
            'package'
        }
    } ~ ' ' ~ $pod.WHEREFORE.perl ~ ': ' ~ $pod.WHEREFORE.WHY
}

# vim: ft=perl6
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