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Template::Alloy::Compile(3pm) User Contributed Perl Documentation Template::Alloy::Compile(3pm)


Template::Alloy::Compile - Compile role - allows for compiling the AST to perl code


The Template::Alloy::Compile role allows for taking the AST returned by the Parse role, and translating it into a perl code document. This is in contrast Template::Alloy::Play which executes the AST directly.


Translate compile_RAWPERL to actually output rather than calling play_RAWPERL.


Takes an AST returned by parse_tree and translates it into perl code using functions stored in the $DIRECTIVES hashref.

A template that looked like the following:

    [% GET foo %]
    [% GET bar %]

would parse to the following perl code:

    # Generated by Template::Alloy::Compile v1.001 on Thu Jun  7 12:58:33 2007
    # From file /home/paul/

    my $blocks = {};
    my $meta   = {};
    my $code   = sub {
        my ($self, $out_ref, $var) = @_;

        $$out_ref .= 'Foo';

        # "GET" Line 2 char 2 (chars 6 to 15)
        $var = $self->play_expr(['foo', 0]);
        $$out_ref .= defined($var) ? $var : $self->undefined_get(['foo', 0]);

        # "GET" Line 3 char 2 (chars 22 to 31)
        $var = $self->play_expr(['bar', 0]);
        $$out_ref .= defined($var) ? $var : $self->undefined_get(['bar', 0]);

        $$out_ref .= 'Bar';

        return 1;

        blocks => $blocks,
        meta   => $meta,
        code   => $code,

As you can see the output is quite a bit more complex than the AST, but under mod_perl conditions, the perl will run faster than playing the AST each time.

Takes an AST variable or expression and returns perl code that can lookup the variable.


Paul Seamons <>


This module may be distributed under the same terms as Perl itself.
2013-09-20 perl v5.18.1