NAME

Template::Namespace::Constants - Compile time constant folding

SYNOPSIS

            

              
              
# easy way to define constants
use Template;
my $tt = Template->new({
    CONSTANTS => {
        pi => 3.14,
        e  => 2.718,
    },
});
# nitty-gritty, hands-dirty way
use Template::Namespace::Constants;
my $tt = Template->new({
    NAMESPACE => {
        constants => Template::Namespace::Constants->new({
            pi => 3.14,
            e  => 2.718,
        },
    },
});
            
          

DESCRIPTION

The Template::Namespace::Constants module implements a namespace handler which is plugged into the Template::Directive compiler module. This then performs compile time constant folding of variables in a particular namespace.

METHODS

new(\%constants)

The new() constructor method creates and returns a reference to a new Template::Namespace::Constants object. This creates an internal stash to store the constant variable definitions passed as arguments.

            

              
              
my $handler = Template::Namespace::Constants->new({
    pi => 3.14,
    e  => 2.718,
});
            
          

ident(\@ident)

Method called to resolve a variable identifier into a compiled form. In this case, the method fetches the corresponding constant value from its internal stash and returns it.

AUTHOR

Andy Wardley <abw@wardley.org> http://wardley.org/

COPYRIGHT

Copyright (C) 1996-2022 Andy Wardley. All Rights Reserved.

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

SEE ALSO

Template::Directive