NAME

Gentoo::Dependency::AST::State - Temporal Tree State controller

VERSION

version 0.001001

METHODS

state

Return the current state object.

This is -1 on the stack array.

            

              
              
$state->state;
            
          

add_dep

            

              
              
$state->add_dep($depstring);
            
          

Tell current state controller $state->state that a literal dependency $depstring has been seen.

            

              
              
$state->add_dep("dev-lang/perl");
→ $dep_object = ::Node::Dependency->new( depstring => "dev-lang/perl");
→ $state->state->add_dep( $state , $dep_object );
            
          

enter_notuse_group

            

              
              
$state->enter_notuse_group($useflag)
            
          

Tell current state controller $state->state that a negative useflag($useflag) group opener has been seen.

            

              
              
$state->enter_notuse_group("aqua");
→ $group_object = ::Node::Group::NotUse->new( useflag => "aqua" );
→ $state->state->enter_notuse_group( $state , $group_object );
            
          

enter_use_group

            

              
              
$state->enter_use_group($useflag)
            
          

Tell current state controller $state->state that a useflag($useflag) group opener has been seen.

            

              
              
$state->enter_use_group("qt4");
→ $group_object = ::Node::Group::Use->new( useflag => "qt4" );
→ $state->state->enter_use_group( $state , $group_object );
            
          

enter_or_group

            

              
              
$state->enter_or_group()
            
          

Tell current state controller $state->state that an or group opener has been seen.

            

              
              
$state->enter_or_group();
→ $group_object = ::Node::Group::Or->new();
→ $state->state->enter_or_group( $state , $group_object );
            
          

enter_and_group

            

              
              
$state->enter_and_group()
            
          

Tell current state controller $state->state that an and group opener has been seen.

            

              
              
$state->enter_and_group();
→ $group_object = ::Node::Group::And->new();
→ $state->state->enter_and_group( $state , $group_object );
            
          

exit_group

            

              
              
$state->exit_group()
            
          

Tell current state controller $state->state that a group exit has been seen.

            

              
              
$state->exit_group();
→ $state->state->exit_group();
            
          

ATTRIBUTES

stack

Contains an ARRAYREF of all the states.

Starts off as:

            

              
              
[ Gentoo::Dependency::AST::Node::TopLevel->new() ]
            
          

PRIVATE METHODS

_pushstack

Set $element as the new parse state, by pushing it on to the stack.

            

              
              
$state->_pushstack($element);
            
          

_popstack

Remove the top element from the stack, deferring control to its parent.

            

              
              
$discarded = $state->_popstack();
            
          

AUTHOR

Kent Fredric <kentfredric@gmail.com>

COPYRIGHT AND LICENSE

This software is copyright (c) 2013 by Kent Fredric <kentfredric@gmail.com>.

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