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lib/Template/Liquid/Tag/Assign.pm  view on Meta::CPAN

package Template::Liquid::Tag::Assign;
our $VERSION = '1.0.23';
use strict;
use warnings;
require Template::Liquid::Error;
require Template::Liquid::Utility;
BEGIN { use base 'Template::Liquid::Tag'; }
sub import { Template::Liquid::register_tag('assign') }

sub new {
    my ($class, $args) = @_;
    raise Template::Liquid::Error {type     => 'Context',
                                   template => $args->{template},
                                   message  => 'Missing template argument',
                                   fatal    => 1
        }
        if !defined $args->{'template'};
    raise Template::Liquid::Error {type     => 'Context',
                                   template => $args->{template},
                                   message  => 'Missing parent argument',
                                   fatal    => 1
        }
        if !defined $args->{'parent'};
    raise Template::Liquid::Error {
                   type     => 'Syntax',
                   template => $args->{template},
                   message => 'Missing argument list in ' . $args->{'markup'},
                   fatal   => 1
        }
        if !defined $args->{'attrs'};
    ($args->{'variable'}, $args->{'value'}, my $filters)
        = split m[\s*[=\|]\s+?]o, $args->{'attrs'}, 3;
    $args->{'name'}    = 'a-' . $args->{'attrs'};
    $args->{'filters'} = [];
    if ($filters) {
        for my $filter (split $Template::Liquid::Utility::FilterSeparator,
                        $filters) {
            my ($filter, $f_args)
                = split $Template::Liquid::Utility::FilterArgumentSeparator,
                $filter, 2;
            $filter =~ s[\s*$][]o;    # XXX - the splitter should clean...
            $filter =~ s[^\s*][]o;    # XXX -  ...this up for us.
            my @f_args
                = !defined $f_args ? () : grep { defined $_ }
                $f_args
                =~ m[$Template::Liquid::Utility::VariableFilterArgumentParser]g;
            push @{$args->{'filters'}}, [$filter, \@f_args];
        }
    }
    return bless $args, $class;
}

sub render {
    my $s   = shift;
    my $var = $s->{'variable'};
    my $val = $s->{template}{context}->get($s->{'value'});
    {    # XXX - Duplicated in Template::Liquid::Variable::render
        if (scalar @{$s->{filters}}) {
            my %_filters = $s->{template}->filters;
        FILTER: for my $filter (@{$s->{filters}}) {
                my ($name, $args) = @$filter;
                map { $_ = $s->{template}{context}->get($_) || $_ } @$args;
                my $package = $_filters{$name};
                my $call    = $package ? $package->can($name) : ();
                if ($call) {
                    $val = $call->($val, @$args);
                    next FILTER;
                }
                raise Template::Liquid::Error {
                                        template => $s->{template},
                                        type     => 'Filter',
                                        message => "Filter '$name' not found",
                                        fatal   => 1
                };
            }
        }
    }
    $s->{template}{context}->set($var, $val);
    return '';
}
1;

=pod

=encoding UTF-8

=begin stopwords

Lütke jadedPixel

=end stopwords