NAME

Text::Xslate::AST::Walker - Filter Nodes in the AST made by Text::Xslate

SYNOPSIS

  use Text::Xslate::Parser;
  use Text::Xslate::AST::Walker;

  my $template = EOF;
  : my $first_name = 'Hanae';
  Hello, <: $last_name :>, <: $first_name :>.
  EOF
  my $parser = Text::Xslate::Parser->new;
  my $nodes = $parser->parse($template);
  my $tw = Text::Xslate::AST::Walker->new(nodes => $nodes);
  my $undeclared_vars = $tw->search_descendants(sub {
    my ($node) = @_;
    ($node->arity eq 'variable') && !$node->is_defined && !$node->is_reserved;
  });

DESCRIPTION

Filter nodes in the AST which made by Text::Xslate.

LICENSE

Copyright (C) aereal.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

AUTHOR

aereal <aereal@aereal.org>