package Tree::Template::Declare;
use strict;
use warnings;
use Sub::Exporter;
use Devel::Caller 'caller_args';
use Carp;
use Data::Dumper;
our $VERSION='0.1';
Sub::Exporter::setup_exporter({
groups => {
default => \&_build_group,
},
collectors => [ INIT => \&_init_args, 'options' ],
});
sub _init_args {
my (undef,$args)=@_;
@{$args->{import_args}}=( [ -default => undef] )
unless @{$args->{import_args}};
return 1;
}
sub _build_group {
my ($class,$name,$args,$coll)=@_;
my $builder=$args->{builder} || $coll->{options}{builder};
if (!ref($builder)) {
my $builder_pkg=$builder;
if ($builder_pkg=~m{\A \+(\w+) \z}smx) {
$builder_pkg="Tree::Template::Declare::$1";
}
eval "require $builder_pkg";
croak "Can't load $builder_pkg: $@" if $@;
if ($builder_pkg->can('new')) {
$builder=$builder_pkg->new();
}
else {
$builder=$builder_pkg;
}
}
my @current_node=(undef);
return {
tree => sub(&) {
local $current_node[0]=undef;
my ($ret)=$_[0]->(caller_args(1));
return $ret;
},
node => sub (&) {
my $node=$builder->new_node();
{
local $current_node[0]=$node;
$_[0]->(caller_args(1));
}
if ($current_node[0]) {
$builder->add_child_node($current_node[0],$node);
}
return $node;
},
name => sub ($) {
$builder->set_node_name($current_node[0],$_[0]);
return;
},
attribs => sub {
my %attrs=@_;
$builder->set_node_attributes($current_node[0],\%attrs);
return;
},
};
}
1;
