OwnerTree
A lazy datastructure that records how definitions are nested in TASTY data.
The structure is lazy because it needs to be computed only for forward references
to symbols that happen before the referenced symbol is created (see symbolAt).
Such forward references are rare.
- Value Params
- addr
The address of tree representing an owning definition, NoAddr for root tree
- end
The end of the owning definition
- reader
The reader to be used for scanning for children
- tag
The tag at
addr. Used to determine which subtrees to scan for children (i.e. iftagis template, don't scan member defs, as these belong already to enclosing class).