---
name: "Perl::PrereqScanner::NotQuiteLite::Context"
section: "3pm"
platform: "linux"
package: "libperl-prereqscanner-notquitelite-perl"
version: "0.9917-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Perl::PrereqScanner::NotQuiteLite::Context"
---

# Perl::PrereqScanner::NotQuiteLite::Context(3pm)

## NAME

Perl::PrereqScanner::NotQuiteLite::Context

## DESCRIPTION

This is typically used to keep callbacks, an eval state, and found prerequisites for a processing file.

## METHODS

### add

```
  $c->add($module);
  $c->add($module => $minimum_version);
```

adds a module with/without a minimum version as a requirement or a suggestion, depending on the eval state. You can add a module with different versions as many times as you wish. The actual minimum version for the module is calculated inside (by CPAN::Meta::Requirements).

### register\_keyword\_parser, remove\_keyword\_parser, register\_method\_parser, register\_sub\_parser

```
  $c->register_keyword_parser(
    'func_name',
    [$parser_class, 'parser_for_the_func', $used_module],
  );
  $c->remove_keyword_parser('func_name');
  $c->register_method_parser(
    'method_name',
    [$parser_class, 'parser_for_the_method', $used_module],
  );
```

If you find a module that can export a loader function is actually `"use"`d (such as Moose that can export an `"extends"` function that will load a module internally), you might also register the loader function as a custom keyword dynamically so that the scanner can also run a callback for the function to parse its argument tokens.

You can also remove the keyword when you find the module is `"no"`ed (and when the module supports `"unimport"`).

You can also register a method callback on the fly (but you can't remove it).

If you always want to check some functions/methods when you load a plugin, just register them using a `"register"` method in the plugin.

### requires

returns a CPAN::Meta::Requirements object for requirements.

### suggests

returns a CPAN::Meta::Requirements object for suggestions (requirements in `"eval"`s), or undef when it is not expected to parse tokens in `"eval"`.

## METHODS MOSTLY FOR INTERNAL USE

### new

creates an instance. You usually don't need to call this because it's automatically created in the scanner.

### has\_callbacks, has\_callback\_for, run\_callback\_for

```
  next unless $c->has_callbacks('use');
  next unless $c->has_callbacks_for('use', 'base');
  $c->run_callbacks_for('use', 'base', $tokens);
```

`"has_callbacks"` returns true if a callback for `"use"`, `"no"`, `"keyword"`, or `"method"` is registered. `"has_callbacks_for"` returns true if a callback for the module/keyword/method is registered. `"run_callbacks_for"` is to run the callback.

### has\_added

returns true if a module has already been added as a requirement or a suggestion. Only useful for the ::UniversalVersion plugin.

## AUTHOR

Kenichi Ishigaki, \<ishigaki@cpan.org\>

## COPYRIGHT AND LICENSE

This software is copyright (c) 2015 by Kenichi Ishigaki.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.