| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT LIBRARY COMPONENTS -- |
| -- -- |
| -- A D A . C O N T A I N E R S . R E D _ B L A C K _ T R E E S . -- |
| -- G E N E R I C _ S E T _ O P E R A T I O N S -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 2004-2006, Free Software Foundation, Inc. -- |
| -- -- |
| -- GNAT is free software; you can redistribute it and/or modify it under -- |
| -- terms of the GNU General Public License as published by the Free Soft- -- |
| -- ware Foundation; either version 2, or (at your option) any later ver- -- |
| -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- |
| -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- |
| -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- |
| -- for more details. You should have received a copy of the GNU General -- |
| -- Public License distributed with GNAT; see file COPYING. If not, write -- |
| -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, -- |
| -- Boston, MA 02110-1301, USA. -- |
| -- -- |
| -- As a special exception, if other files instantiate generics from this -- |
| -- unit, or you link this unit with other files to produce an executable, -- |
| -- this unit does not by itself cause the resulting executable to be -- |
| -- covered by the GNU General Public License. This exception does not -- |
| -- however invalidate any other reasons why the executable file might be -- |
| -- covered by the GNU Public License. -- |
| -- -- |
| -- This unit was originally developed by Matthew J Heaney. -- |
| ------------------------------------------------------------------------------ |
| |
| -- Tree_Type is used to implement ordered containers. This package declares |
| -- set-based tree operations. |
| |
| with Ada.Containers.Red_Black_Trees.Generic_Operations; |
| |
| generic |
| with package Tree_Operations is new Generic_Operations (<>); |
| |
| use Tree_Operations.Tree_Types; |
| |
| with procedure Insert_With_Hint |
| (Dst_Tree : in out Tree_Type; |
| Dst_Hint : Node_Access; |
| Src_Node : Node_Access; |
| Dst_Node : out Node_Access); |
| |
| with function Copy_Tree (Source_Root : Node_Access) |
| return Node_Access; |
| |
| with procedure Delete_Tree (X : in out Node_Access); |
| |
| with function Is_Less (Left, Right : Node_Access) return Boolean; |
| |
| with procedure Free (X : in out Node_Access); |
| |
| package Ada.Containers.Red_Black_Trees.Generic_Set_Operations is |
| pragma Pure; |
| |
| procedure Union (Target : in out Tree_Type; Source : Tree_Type); |
| -- Attempts to insert each element of Source in Target. If Target is |
| -- busy then Program_Error is raised. We say "attempts" here because |
| -- if these are unique-element sets, then the insertion should fail |
| -- (not insert a new item) when the insertion item from Source is |
| -- equivalent to an item already in Target. If these are multisets |
| -- then of course the attempt should always succeed. |
| |
| function Union (Left, Right : Tree_Type) return Tree_Type; |
| -- Makes a copy of Left, and attempts to insert each element of |
| -- Right into the copy, then returns the copy. |
| |
| procedure Intersection (Target : in out Tree_Type; Source : Tree_Type); |
| -- Removes elements from Target that are not equivalent to items in |
| -- Source. If Target is busy then Program_Error is raised. |
| |
| function Intersection (Left, Right : Tree_Type) return Tree_Type; |
| -- Returns a set comprising all the items in Left equivalent to items in |
| -- Right. |
| |
| procedure Difference (Target : in out Tree_Type; Source : Tree_Type); |
| -- Removes elements from Target that are equivalent to items in Source. If |
| -- Target is busy then Program_Error is raised. |
| |
| function Difference (Left, Right : Tree_Type) return Tree_Type; |
| -- Returns a set comprising all the items in Left not equivalent to items |
| -- in Right. |
| |
| procedure Symmetric_Difference |
| (Target : in out Tree_Type; |
| Source : Tree_Type); |
| -- Removes from Target elements that are equivalent to items in Source, and |
| -- inserts into Target items from Source not equivalent elements in |
| -- Target. If Target is busy then Program_Error is raised. |
| |
| function Symmetric_Difference (Left, Right : Tree_Type) return Tree_Type; |
| -- Returns a set comprising the union of the elements in Left not |
| -- equivalent to items in Right, and the elements in Right not equivalent |
| -- to items in Left. |
| |
| function Is_Subset (Subset : Tree_Type; Of_Set : Tree_Type) return Boolean; |
| -- Returns False if Subset contains at least one element not equivalent to |
| -- any item in Of_Set; returns True otherwise. |
| |
| function Overlap (Left, Right : Tree_Type) return Boolean; |
| -- Returns True if at least one element of Left is equivalent to an item in |
| -- Right; returns False otherwise. |
| |
| end Ada.Containers.Red_Black_Trees.Generic_Set_Operations; |
