Devel::REPL::Profile.3pm

Langue: en

Autres versions - même langue

Version: 2010-05-23 (fedora - 01/12/10)

Section: 3 (Bibliothèques de fonctions)

NAME

Devel::REPL::Profile

SYNOPSIS

  package Devel::REPL::Profile::MyProject;
  
  use Moose;
  use namespace::clean -except => [ 'meta' ];
  
  with 'Devel::REPL::Profile';
  
  sub apply_profile {
      my ($self, $repl) = @_;
      # do something here
  }
  
  1;
 
 

DESCRIPTION

For particular projects you might well end up running the same commands each time the REPL shell starts up - loading Perl modules, setting configuration, and so on.

A mechanism called profiles exists to let you package and distribute these start-up scripts, as Perl modules.

USAGE

Quite simply, follow the ``SYNOPSIS'' section above to create a boilerplate profile module. Within the "apply_profile" method, the $repl variable can be used to run any commands as the user would, within the context of their running "Devel::REPL" shell instance.

For example, to load a module, you might have something like this:

  sub apply_profile {
      my ($self, $repl) = @_;
      $repl->eval('use Carp');
  }
 
 

As you can see, the "eval" method is used to run any code. The user won't see any output from that, and the code can ``safely'' die without destroying the REPL shell. The return value of "eval" will be the return value of the code you gave, or else if it died then a "Devel::REPL::Error" object is returned.

If you want to load a "Devel::REPL" plugin, then use the following method:

  $repl->load_plugin('Timing');
 
 

The "load_plugin" and "eval" methods should cover most of what you would want to do before the user has access to the shell. Remember that plugin features are immediately available, so you can load for example the "LexEnv" plugin, and then declare "my" variables which the user will have access to.

Selecting a Profile

To run the shell with a particular profile, use the following command:
  system$ re.pl --profile MyProject
 
 

Alternatively, you can set the environment variable "DEVEL_REPL_PROFILE" to MyProject.

When the profile name is unqualified, as in the above example, the profile is assumed to be in the "Devel::REPL::Profile::" namespace. Otherwise if you pass something which contains the "::" character sequence, it will be loaded as-is.

AUTHOR

Matt S Trout - mst (at) shadowcatsystems.co.uk (<http://www.shadowcatsystems.co.uk/>)

LICENSE

This library is free software under the same terms as perl itself