NAME

Blatte::Syntax - parse tree structure for Blatte documents

SYNOPSIS

  package MySyntax;

  use Blatte::Syntax;

  @ISA = qw(Blatte::Syntax);

  sub transform {
    my($self, $column) = @_;

    ...return a string containing a Perl expression...
  }

...

  use Blatte::Parser;
  use MySyntax;

  $parser = new Blatte::Parser();
  $parser->add_special_form(\&my_special_form);

  sub my_special_form {
    my($self, $input_arg) = @_;
    my $input = $input_arg;
    if (ref($input)) {
      $input = $$input_arg;
    }

    ...examine $input...
    ...return undef if no match...
    ...else consume matching text from beginning of $input...

    if (ref($input_arg)) {
      $$input_arg = $input;
    }

    return new MySyntax(...);
  }

DESCRIPTION

Blatte::Syntax is the base class of a family of objects used to represent a Blatte parse tree. A tree of Blatte::Syntax objects is returned by expr() and other parsing methods of Blatte::Parser. All Blatte::Syntax objects have a transform() method that converts them to strings of Perl code.

AUTHOR

Bob Glickstein <bobg@zanshin.com>.

Visit the Blatte website, <http://www.blatte.org/>.

LICENSE

Blatte is distributed under the terms of the GNU General Public License, version 2. See the file LICENSE that accompanies the Blatte distribution.

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