Breno G. de Oliveira > Padre-0.45 > Padre::Task::SyntaxChecker



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Module Version: 0.45   Source   Latest Release: Padre-0.47


Padre::Task::SyntaxChecker - Generic syntax-checking background processing task


  package Padre::Task::SyntaxChecker::MyLanguage;
  use base 'Padre::Task::SyntaxChecker';
  sub run {
          my $self = shift;
          my $doc_text = $self->{text};
          # black magic here
          $self->{syntax_check} = ...;
          return 1;
  # elsewhere:
  # by default, the text of the current document
  # will be fetched as will the document's notebook page.
  my $task = Padre::Task::SyntaxChecker::MyLanguage->new();
  my $task2 = Padre::Task::SyntaxChecker::MyLanguage->new(
    text          => Padre::Current->document->text_get,
    editor => Padre::Current->editor,


This is a base class for all tasks that need to do expensive syntax checking in a background task.

You can either let Padre::Task::SyntaxChecker fetch the Perl code for parsing from the current document or specify it as the "text" parameter to the constructor.

To create a syntax checker for a given document type Foo, you create a subclass Padre::Task::SyntaxChecker::Foo and implement the run method which uses the $self->{text} attribute of the task object for its nefarious syntax checking purposes and then stores the result in the $self->{syntax_check} attribute of the object. The result should be a data structure of the form defined in the documentation of the Padre::Document::check_syntax method. See Padre::Document.

This base class implements all logic necessary to update the GUI with the syntax check results in a finish() hook. If you want to implement your own finish(), make sure to call $self->SUPER::finish for this reason.


This class inherits from Padre::Task and its instances can be scheduled using Padre::TaskManager.

The transfer of the objects to and from the worker threads is implemented with Storable.


Steffen Mueller


Copyright 2008-2009 The Padre development team as listed in

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

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