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# Creates a tag to be used in the system, much like a function call. Should probably disallow recursion in order to preserve the non-looping nature of liquid. |
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use strict; |
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use warnings; |
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package WWW::Shopify::Liquid::Filter::CustomFilter; |
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7096
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use parent 'WWW::Shopify::Liquid::Filter'; |
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sub new { |
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my ($package, $parser, $line, $core, $operand, @arguments) = @_; |
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if (!ref($package)) { |
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my $self = bless { |
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name => $core, |
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contents => $arguments[0] |
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}, $package; |
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die new WWW::Shopify::Liquid::Exception("Cannot register custom filter " . $core . ", would conflict with buildin filter.") if |
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$parser->filters->{$core} && !$parser->filters->{$core}->isa('WWW::Shopify::Liquid::Filter::CustomFilter'); |
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die new WWW::Shopify::Liquid::Exception("Recursion is disallowed in liquid.") unless int(grep { $_->isa('WWW::Shopify::Liquid::Filter::CustomFilter') && $_->name && $core eq $_->name } $arguments[0]->tokens) == 0; |
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$parser->custom_filters->{$self->name} = $self; |
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push(@{$parser->{transient_elements}}, $self) if $parser->transient_custom_operations; |
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return $self; |
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} else { |
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my $self = ref(shift)->SUPER::new(@_); |
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$self->{contents} = $parser->custom_filters->{$self->{core}}->{contents}; |
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return $self; |
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} |
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} |
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0
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sub abstract { return !ref($_[0]); } |
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sub tags { return $_[0]->{name}; } |
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sub name { return $_[0]->{name}; } |
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sub min_arguments { return $_[0]->{min_arguments} || 0; } |
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sub max_arguments { return $_[0]->{max_arguments}; } |
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# No optimization permitted for now. |
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sub optimize { |
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0
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0
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return $_[0]; |
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} |
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sub render { |
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my ($self, $renderer, $hash) = @_; |
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my $operand = !$self->is_processed($self->{operand}) ? $self->{operand}->render($renderer, $hash) : $self->{operand}; |
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my @arguments = map { !$self->is_processed($_) ? $_->render($renderer, $hash) : $_ } @{$self->{arguments}}; |
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3
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my $contents = $self->{contents}; |
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$hash->{arguments} = \@arguments; |
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$hash->{operand} = $operand; |
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1
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$contents->render($renderer, $hash); |
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1
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if ($renderer->{return_value}) { |
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1
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my $value = delete $renderer->{return_value}; |
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1
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return $value; |
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} |
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0
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0
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return undef; |
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} |
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57
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package WWW::Shopify::Liquid::Tag::CreateFilter; |
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37
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37
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19737
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use parent 'WWW::Shopify::Liquid::Tag::Enclosing'; |
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37
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105
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37
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214
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59
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60
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0
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0
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0
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0
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sub min_arguments { 2 } |
61
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0
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0
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0
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0
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sub max_arguments { 4 } |
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63
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sub new { |
64
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1
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1
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0
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3
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my ($package, $line, $tag, $arguments, $contents, $parser) = @_; |
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1
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6
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my $self = $package->SUPER::new($line, $tag, $arguments, $contents, $parser); |
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1
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$parser->parent->register_filter(WWW::Shopify::Liquid::Filter::CustomFilter->new($parser, [], $arguments->[0]->{core}, $arguments, @{$contents->[0]})); |
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1
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15
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67
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1
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3
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return $self; |
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} |
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70
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1
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1
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0
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4
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sub render { '' } |
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72
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1; |