Matt S Trout > Rakudo-Star > TGE::Tree   Annotate this POD
TGE::Tree - The top-level node of every tree.   A TGE::Tree is
the core object at the center of every tree transformation. You
can think of it as something like a PGE::Match object. The first
step of applying every tree grammar is to create a TGE::Tree
object and wrap it around the tree being transformed. The
TGE::Tree object handles result caching for particular transform
rules on particular nodes, maintains connections between
particular nodes and the transforms that can apply to those
nodes, and will eventually handle indexing for faster tree
searches.   Returns a simple initialized TGE::Tree object.
Doesn't accept any constructor parameters.     value =
Tree.get('attrname')  Fetches the value of a particular
attribute from the root node of the grammar.    value =
Tree.get('attrname', node)   value = Tree.get('attrname', node,
'type')  Fetches the value of a particular attribute from the
node passed in. When working with a tree where the nodes d