NAME

Config::AST::Follow - direct addressing engine

DESCRIPTION

This class implements direct node addressing in Config::AST. Objects of this class are created as

  $obj = Config::AST::Follow->new($node, $lexicon)

where $node is the start node, and $lexicon is the lexicon corresponding to that node. A Config::AST::Follow object transparently delegates its methods to the underlying $node, provided that such method is defined for $node. If it is not, it reproduces itself with the new $node, obtained as a result of the call to $node->subtree with the method name as its argument. If the result of the subtree call is a leaf node, it is returned verbatim. The lexicon hash is consulted to check if the requested node name is allowed or not. If it is not, croak is called. As a result, the following call:

  $obj->A->B->C

is equivalent to

  $node->getnode('X', 'Y', 'Z')

except that it will consult the lexicon to see if each name is allowed within a particular section.

SEE ALSO

Config::AST(3).