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