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lib/PPIx/QuoteLike.pm  view on Meta::CPAN

	$cached_doc
	    and $doc == $cached_doc
	    and return $cached_encoding;

	my $bom = $doc->first_element()
	    or return;

	Scalar::Util::weaken( $cached_doc = $doc );

	if ( $bom->isa( 'PPI::Token::BOM' ) ) {
	    return ( $cached_encoding = $known_bom{
		uc unpack 'H*', $bom->content() } );
	}

	$cached_encoding = undef;

	foreach my $use (
	    @{ $doc->find( 'PPI::Statement::Include' ) || [] }
	) {
	    'use' eq $use->type()