Text::MicroMason::PLP(3) Alternate Syntax like PLP Templates

SYNOPSIS

Instead of using this class directly, pass its name to be mixed in:


use Text::MicroMason;
my $mason = Text::MicroMason::Base->new( -PLP );

Use the standard compile and execute methods to parse and evaluate templates: 

  print $mason->compile( text=>$template )->( @%args );
  print $mason->execute( text=>$template, @args );

The PLP syntax provides another way to mix Perl into a text template: 

    <: my $name = $ARGS{name};
      if ( $name eq 'Dave' ) {  :>
      I'm sorry <:= $name :>, I'm afraid I can't do that right now.
    <: } else { 
        my $hour = (localtime)[2];
        my $daypart = ( $hour > 11 ) ? 'afternoon' : 'morning'; 
      :>
      Good <:= $daypart :>, <:= $name :>!
    <: } :>

DESCRIPTION

This subclass replaces MicroMason's normal lexer with one that supports a syntax similar to that provided by the PLP module.

Compatibility with PLP

PLP is a web-oriented system with many fatures, of which only the templating functionality is emulated.

This is not a drop-in replacement for PLP, as the implementation is quite different, but it should be able to process some existing templates without major changes.

The following features of EmbPerl syntax are supported:

  • Basic markup tags

The following syntax features of are not supported:

  • Emulation of functions defined in PLP::Functions is incomplete.
  • Web server interface with tied

Template Syntax

The following elements are recognized by the PLP lexer:
  • <: perl statements :>

    Arbitrary Perl code to be executed at this point in the template.

  • <:= perl expression :>

    A Perl expression to be evaluated and included in the output.

  • <( file, arguments )>

    Includes an external template file.

Private Methods

lex_token
  ( $type, $value ) = $mason->lex_token();

Lexer for <: ... :> and <( ... )> tags.

Attempts to parse a token from the template text stored in the global $_ and returns a token type and value. Returns an empty list if unable to parse further due to an error.

assemble
Performs compile-time file includes for any include tokens found by lex_token.

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