|##########|
|#MAGIC   #|CKOLFLGB
|#PROJECT #|""
|#PATHS   #|"StdProject"
|#FLAGS   #|xx---x--x---xxx-----------------
|#USERSW  #|--------------------------------
|#USERMASK#|--------------------------------
|#SWITCHES#|x----xxxxx-xx---
|##########|
DEFINITION MODULE OTrees;

  DEFINITION MODULE StdTrees(Tree : POINTER TO TreeObj);

    IMPORT OLists;

    DEFINITION MODULE TreeList = OLists.BiLists(Tree);

    FROM TreeList IMPORT Condition,ApplyProc;

  TYPE
    TreeObj    = OBJECT OF TreeList.Node,
                           TreeList.List;
                   parent : Tree;

                   CONSTRUCTOR Create;
                   DESTRUCTOR Delete;

                   METHOD InsertFirst(n : Tree);
                   METHOD InsertLast(n : Tree);
                   METHOD InsertAfter(n,after : Tree);
                   METHOD InsertBefore(n,before : Tree);

                   METHOD ApplyDepthFirst(before,between,after : ApplyProc := NIL);
                   METHOD ApplyBreadthFirst(app : ApplyProc);

                   |METHOD FindDepthFirst(if : Condition;from : Tree := NIL):Tree;
                   |METHOD FindBreadthFirst(if : Condition;from : Tree := NIL):Tree;

                   METHOD Clone():Tree;
                 END;

  END StdTrees;

END OTrees.