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Template::Namespace::Constants.3pm

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) 1996-2007 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