------------------------------------------------------------------------------
|
------------------------------------------------------------------------------
|
-- --
|
-- --
|
-- GNAT LIBRARY COMPONENTS --
|
-- GNAT LIBRARY COMPONENTS --
|
-- --
|
-- --
|
-- A D A . C O N T A I N E R S . O R D E R E D _ M U L T I S E T S --
|
-- A D A . C O N T A I N E R S . O R D E R E D _ M U L T I S E T S --
|
-- --
|
-- --
|
-- B o d y --
|
-- B o d y --
|
-- --
|
-- --
|
-- Copyright (C) 2004-2009, Free Software Foundation, Inc. --
|
-- Copyright (C) 2004-2009, Free Software Foundation, Inc. --
|
-- --
|
-- --
|
-- GNAT is free software; you can redistribute it and/or modify it under --
|
-- 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- --
|
-- terms of the GNU General Public License as published by the Free Soft- --
|
-- ware Foundation; either version 3, or (at your option) any later ver- --
|
-- ware Foundation; either version 3, or (at your option) any later ver- --
|
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
|
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
|
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
|
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
|
-- or FITNESS FOR A PARTICULAR PURPOSE. --
|
-- or FITNESS FOR A PARTICULAR PURPOSE. --
|
-- --
|
-- --
|
-- As a special exception under Section 7 of GPL version 3, you are granted --
|
-- As a special exception under Section 7 of GPL version 3, you are granted --
|
-- additional permissions described in the GCC Runtime Library Exception, --
|
-- additional permissions described in the GCC Runtime Library Exception, --
|
-- version 3.1, as published by the Free Software Foundation. --
|
-- version 3.1, as published by the Free Software Foundation. --
|
-- --
|
-- --
|
-- You should have received a copy of the GNU General Public License and --
|
-- You should have received a copy of the GNU General Public License and --
|
-- a copy of the GCC Runtime Library Exception along with this program; --
|
-- a copy of the GCC Runtime Library Exception along with this program; --
|
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
|
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
|
-- <http://www.gnu.org/licenses/>. --
|
-- <http://www.gnu.org/licenses/>. --
|
-- --
|
-- --
|
-- This unit was originally developed by Matthew J Heaney. --
|
-- This unit was originally developed by Matthew J Heaney. --
|
------------------------------------------------------------------------------
|
------------------------------------------------------------------------------
|
|
|
with Ada.Unchecked_Deallocation;
|
with Ada.Unchecked_Deallocation;
|
|
|
with Ada.Containers.Red_Black_Trees.Generic_Operations;
|
with Ada.Containers.Red_Black_Trees.Generic_Operations;
|
pragma Elaborate_All (Ada.Containers.Red_Black_Trees.Generic_Operations);
|
pragma Elaborate_All (Ada.Containers.Red_Black_Trees.Generic_Operations);
|
|
|
with Ada.Containers.Red_Black_Trees.Generic_Keys;
|
with Ada.Containers.Red_Black_Trees.Generic_Keys;
|
pragma Elaborate_All (Ada.Containers.Red_Black_Trees.Generic_Keys);
|
pragma Elaborate_All (Ada.Containers.Red_Black_Trees.Generic_Keys);
|
|
|
with Ada.Containers.Red_Black_Trees.Generic_Set_Operations;
|
with Ada.Containers.Red_Black_Trees.Generic_Set_Operations;
|
pragma Elaborate_All (Ada.Containers.Red_Black_Trees.Generic_Set_Operations);
|
pragma Elaborate_All (Ada.Containers.Red_Black_Trees.Generic_Set_Operations);
|
|
|
package body Ada.Containers.Ordered_Multisets is
|
package body Ada.Containers.Ordered_Multisets is
|
|
|
-----------------------------
|
-----------------------------
|
-- Node Access Subprograms --
|
-- Node Access Subprograms --
|
-----------------------------
|
-----------------------------
|
|
|
-- These subprograms provide a functional interface to access fields
|
-- These subprograms provide a functional interface to access fields
|
-- of a node, and a procedural interface for modifying these values.
|
-- of a node, and a procedural interface for modifying these values.
|
|
|
function Color (Node : Node_Access) return Color_Type;
|
function Color (Node : Node_Access) return Color_Type;
|
pragma Inline (Color);
|
pragma Inline (Color);
|
|
|
function Left (Node : Node_Access) return Node_Access;
|
function Left (Node : Node_Access) return Node_Access;
|
pragma Inline (Left);
|
pragma Inline (Left);
|
|
|
function Parent (Node : Node_Access) return Node_Access;
|
function Parent (Node : Node_Access) return Node_Access;
|
pragma Inline (Parent);
|
pragma Inline (Parent);
|
|
|
function Right (Node : Node_Access) return Node_Access;
|
function Right (Node : Node_Access) return Node_Access;
|
pragma Inline (Right);
|
pragma Inline (Right);
|
|
|
procedure Set_Parent (Node : Node_Access; Parent : Node_Access);
|
procedure Set_Parent (Node : Node_Access; Parent : Node_Access);
|
pragma Inline (Set_Parent);
|
pragma Inline (Set_Parent);
|
|
|
procedure Set_Left (Node : Node_Access; Left : Node_Access);
|
procedure Set_Left (Node : Node_Access; Left : Node_Access);
|
pragma Inline (Set_Left);
|
pragma Inline (Set_Left);
|
|
|
procedure Set_Right (Node : Node_Access; Right : Node_Access);
|
procedure Set_Right (Node : Node_Access; Right : Node_Access);
|
pragma Inline (Set_Right);
|
pragma Inline (Set_Right);
|
|
|
procedure Set_Color (Node : Node_Access; Color : Color_Type);
|
procedure Set_Color (Node : Node_Access; Color : Color_Type);
|
pragma Inline (Set_Color);
|
pragma Inline (Set_Color);
|
|
|
-----------------------
|
-----------------------
|
-- Local Subprograms --
|
-- Local Subprograms --
|
-----------------------
|
-----------------------
|
|
|
function Copy_Node (Source : Node_Access) return Node_Access;
|
function Copy_Node (Source : Node_Access) return Node_Access;
|
pragma Inline (Copy_Node);
|
pragma Inline (Copy_Node);
|
|
|
procedure Free (X : in out Node_Access);
|
procedure Free (X : in out Node_Access);
|
|
|
procedure Insert_Sans_Hint
|
procedure Insert_Sans_Hint
|
(Tree : in out Tree_Type;
|
(Tree : in out Tree_Type;
|
New_Item : Element_Type;
|
New_Item : Element_Type;
|
Node : out Node_Access);
|
Node : out Node_Access);
|
|
|
procedure Insert_With_Hint
|
procedure Insert_With_Hint
|
(Dst_Tree : in out Tree_Type;
|
(Dst_Tree : in out Tree_Type;
|
Dst_Hint : Node_Access;
|
Dst_Hint : Node_Access;
|
Src_Node : Node_Access;
|
Src_Node : Node_Access;
|
Dst_Node : out Node_Access);
|
Dst_Node : out Node_Access);
|
|
|
function Is_Equal_Node_Node (L, R : Node_Access) return Boolean;
|
function Is_Equal_Node_Node (L, R : Node_Access) return Boolean;
|
pragma Inline (Is_Equal_Node_Node);
|
pragma Inline (Is_Equal_Node_Node);
|
|
|
function Is_Greater_Element_Node
|
function Is_Greater_Element_Node
|
(Left : Element_Type;
|
(Left : Element_Type;
|
Right : Node_Access) return Boolean;
|
Right : Node_Access) return Boolean;
|
pragma Inline (Is_Greater_Element_Node);
|
pragma Inline (Is_Greater_Element_Node);
|
|
|
function Is_Less_Element_Node
|
function Is_Less_Element_Node
|
(Left : Element_Type;
|
(Left : Element_Type;
|
Right : Node_Access) return Boolean;
|
Right : Node_Access) return Boolean;
|
pragma Inline (Is_Less_Element_Node);
|
pragma Inline (Is_Less_Element_Node);
|
|
|
function Is_Less_Node_Node (L, R : Node_Access) return Boolean;
|
function Is_Less_Node_Node (L, R : Node_Access) return Boolean;
|
pragma Inline (Is_Less_Node_Node);
|
pragma Inline (Is_Less_Node_Node);
|
|
|
procedure Replace_Element
|
procedure Replace_Element
|
(Tree : in out Tree_Type;
|
(Tree : in out Tree_Type;
|
Node : Node_Access;
|
Node : Node_Access;
|
Item : Element_Type);
|
Item : Element_Type);
|
|
|
--------------------------
|
--------------------------
|
-- Local Instantiations --
|
-- Local Instantiations --
|
--------------------------
|
--------------------------
|
|
|
package Tree_Operations is
|
package Tree_Operations is
|
new Red_Black_Trees.Generic_Operations (Tree_Types);
|
new Red_Black_Trees.Generic_Operations (Tree_Types);
|
|
|
procedure Delete_Tree is
|
procedure Delete_Tree is
|
new Tree_Operations.Generic_Delete_Tree (Free);
|
new Tree_Operations.Generic_Delete_Tree (Free);
|
|
|
function Copy_Tree is
|
function Copy_Tree is
|
new Tree_Operations.Generic_Copy_Tree (Copy_Node, Delete_Tree);
|
new Tree_Operations.Generic_Copy_Tree (Copy_Node, Delete_Tree);
|
|
|
use Tree_Operations;
|
use Tree_Operations;
|
|
|
function Is_Equal is
|
function Is_Equal is
|
new Tree_Operations.Generic_Equal (Is_Equal_Node_Node);
|
new Tree_Operations.Generic_Equal (Is_Equal_Node_Node);
|
|
|
package Element_Keys is
|
package Element_Keys is
|
new Red_Black_Trees.Generic_Keys
|
new Red_Black_Trees.Generic_Keys
|
(Tree_Operations => Tree_Operations,
|
(Tree_Operations => Tree_Operations,
|
Key_Type => Element_Type,
|
Key_Type => Element_Type,
|
Is_Less_Key_Node => Is_Less_Element_Node,
|
Is_Less_Key_Node => Is_Less_Element_Node,
|
Is_Greater_Key_Node => Is_Greater_Element_Node);
|
Is_Greater_Key_Node => Is_Greater_Element_Node);
|
|
|
package Set_Ops is
|
package Set_Ops is
|
new Generic_Set_Operations
|
new Generic_Set_Operations
|
(Tree_Operations => Tree_Operations,
|
(Tree_Operations => Tree_Operations,
|
Insert_With_Hint => Insert_With_Hint,
|
Insert_With_Hint => Insert_With_Hint,
|
Copy_Tree => Copy_Tree,
|
Copy_Tree => Copy_Tree,
|
Delete_Tree => Delete_Tree,
|
Delete_Tree => Delete_Tree,
|
Is_Less => Is_Less_Node_Node,
|
Is_Less => Is_Less_Node_Node,
|
Free => Free);
|
Free => Free);
|
|
|
---------
|
---------
|
-- "<" --
|
-- "<" --
|
---------
|
---------
|
|
|
function "<" (Left, Right : Cursor) return Boolean is
|
function "<" (Left, Right : Cursor) return Boolean is
|
begin
|
begin
|
if Left.Node = null then
|
if Left.Node = null then
|
raise Constraint_Error with "Left cursor equals No_Element";
|
raise Constraint_Error with "Left cursor equals No_Element";
|
end if;
|
end if;
|
|
|
if Right.Node = null then
|
if Right.Node = null then
|
raise Constraint_Error with "Right cursor equals No_Element";
|
raise Constraint_Error with "Right cursor equals No_Element";
|
end if;
|
end if;
|
|
|
pragma Assert (Vet (Left.Container.Tree, Left.Node),
|
pragma Assert (Vet (Left.Container.Tree, Left.Node),
|
"bad Left cursor in ""<""");
|
"bad Left cursor in ""<""");
|
|
|
pragma Assert (Vet (Right.Container.Tree, Right.Node),
|
pragma Assert (Vet (Right.Container.Tree, Right.Node),
|
"bad Right cursor in ""<""");
|
"bad Right cursor in ""<""");
|
|
|
return Left.Node.Element < Right.Node.Element;
|
return Left.Node.Element < Right.Node.Element;
|
end "<";
|
end "<";
|
|
|
function "<" (Left : Cursor; Right : Element_Type)
|
function "<" (Left : Cursor; Right : Element_Type)
|
return Boolean is
|
return Boolean is
|
begin
|
begin
|
if Left.Node = null then
|
if Left.Node = null then
|
raise Constraint_Error with "Left cursor equals No_Element";
|
raise Constraint_Error with "Left cursor equals No_Element";
|
end if;
|
end if;
|
|
|
pragma Assert (Vet (Left.Container.Tree, Left.Node),
|
pragma Assert (Vet (Left.Container.Tree, Left.Node),
|
"bad Left cursor in ""<""");
|
"bad Left cursor in ""<""");
|
|
|
return Left.Node.Element < Right;
|
return Left.Node.Element < Right;
|
end "<";
|
end "<";
|
|
|
function "<" (Left : Element_Type; Right : Cursor)
|
function "<" (Left : Element_Type; Right : Cursor)
|
return Boolean is
|
return Boolean is
|
begin
|
begin
|
if Right.Node = null then
|
if Right.Node = null then
|
raise Constraint_Error with "Right cursor equals No_Element";
|
raise Constraint_Error with "Right cursor equals No_Element";
|
end if;
|
end if;
|
|
|
pragma Assert (Vet (Right.Container.Tree, Right.Node),
|
pragma Assert (Vet (Right.Container.Tree, Right.Node),
|
"bad Right cursor in ""<""");
|
"bad Right cursor in ""<""");
|
|
|
return Left < Right.Node.Element;
|
return Left < Right.Node.Element;
|
end "<";
|
end "<";
|
|
|
---------
|
---------
|
-- "=" --
|
-- "=" --
|
---------
|
---------
|
|
|
function "=" (Left, Right : Set) return Boolean is
|
function "=" (Left, Right : Set) return Boolean is
|
begin
|
begin
|
return Is_Equal (Left.Tree, Right.Tree);
|
return Is_Equal (Left.Tree, Right.Tree);
|
end "=";
|
end "=";
|
|
|
---------
|
---------
|
-- ">" --
|
-- ">" --
|
---------
|
---------
|
|
|
function ">" (Left, Right : Cursor) return Boolean is
|
function ">" (Left, Right : Cursor) return Boolean is
|
begin
|
begin
|
if Left.Node = null then
|
if Left.Node = null then
|
raise Constraint_Error with "Left cursor equals No_Element";
|
raise Constraint_Error with "Left cursor equals No_Element";
|
end if;
|
end if;
|
|
|
if Right.Node = null then
|
if Right.Node = null then
|
raise Constraint_Error with "Right cursor equals No_Element";
|
raise Constraint_Error with "Right cursor equals No_Element";
|
end if;
|
end if;
|
|
|
pragma Assert (Vet (Left.Container.Tree, Left.Node),
|
pragma Assert (Vet (Left.Container.Tree, Left.Node),
|
"bad Left cursor in "">""");
|
"bad Left cursor in "">""");
|
|
|
pragma Assert (Vet (Right.Container.Tree, Right.Node),
|
pragma Assert (Vet (Right.Container.Tree, Right.Node),
|
"bad Right cursor in "">""");
|
"bad Right cursor in "">""");
|
|
|
-- L > R same as R < L
|
-- L > R same as R < L
|
|
|
return Right.Node.Element < Left.Node.Element;
|
return Right.Node.Element < Left.Node.Element;
|
end ">";
|
end ">";
|
|
|
function ">" (Left : Cursor; Right : Element_Type)
|
function ">" (Left : Cursor; Right : Element_Type)
|
return Boolean is
|
return Boolean is
|
begin
|
begin
|
if Left.Node = null then
|
if Left.Node = null then
|
raise Constraint_Error with "Left cursor equals No_Element";
|
raise Constraint_Error with "Left cursor equals No_Element";
|
end if;
|
end if;
|
|
|
pragma Assert (Vet (Left.Container.Tree, Left.Node),
|
pragma Assert (Vet (Left.Container.Tree, Left.Node),
|
"bad Left cursor in "">""");
|
"bad Left cursor in "">""");
|
|
|
return Right < Left.Node.Element;
|
return Right < Left.Node.Element;
|
end ">";
|
end ">";
|
|
|
function ">" (Left : Element_Type; Right : Cursor)
|
function ">" (Left : Element_Type; Right : Cursor)
|
return Boolean is
|
return Boolean is
|
begin
|
begin
|
if Right.Node = null then
|
if Right.Node = null then
|
raise Constraint_Error with "Right cursor equals No_Element";
|
raise Constraint_Error with "Right cursor equals No_Element";
|
end if;
|
end if;
|
|
|
pragma Assert (Vet (Right.Container.Tree, Right.Node),
|
pragma Assert (Vet (Right.Container.Tree, Right.Node),
|
"bad Right cursor in "">""");
|
"bad Right cursor in "">""");
|
|
|
return Right.Node.Element < Left;
|
return Right.Node.Element < Left;
|
end ">";
|
end ">";
|
|
|
------------
|
------------
|
-- Adjust --
|
-- Adjust --
|
------------
|
------------
|
|
|
procedure Adjust is new Tree_Operations.Generic_Adjust (Copy_Tree);
|
procedure Adjust is new Tree_Operations.Generic_Adjust (Copy_Tree);
|
|
|
procedure Adjust (Container : in out Set) is
|
procedure Adjust (Container : in out Set) is
|
begin
|
begin
|
Adjust (Container.Tree);
|
Adjust (Container.Tree);
|
end Adjust;
|
end Adjust;
|
|
|
-------------
|
-------------
|
-- Ceiling --
|
-- Ceiling --
|
-------------
|
-------------
|
|
|
function Ceiling (Container : Set; Item : Element_Type) return Cursor is
|
function Ceiling (Container : Set; Item : Element_Type) return Cursor is
|
Node : constant Node_Access :=
|
Node : constant Node_Access :=
|
Element_Keys.Ceiling (Container.Tree, Item);
|
Element_Keys.Ceiling (Container.Tree, Item);
|
|
|
begin
|
begin
|
if Node = null then
|
if Node = null then
|
return No_Element;
|
return No_Element;
|
end if;
|
end if;
|
|
|
return Cursor'(Container'Unrestricted_Access, Node);
|
return Cursor'(Container'Unrestricted_Access, Node);
|
end Ceiling;
|
end Ceiling;
|
|
|
-----------
|
-----------
|
-- Clear --
|
-- Clear --
|
-----------
|
-----------
|
|
|
procedure Clear is
|
procedure Clear is
|
new Tree_Operations.Generic_Clear (Delete_Tree);
|
new Tree_Operations.Generic_Clear (Delete_Tree);
|
|
|
procedure Clear (Container : in out Set) is
|
procedure Clear (Container : in out Set) is
|
begin
|
begin
|
Clear (Container.Tree);
|
Clear (Container.Tree);
|
end Clear;
|
end Clear;
|
|
|
-----------
|
-----------
|
-- Color --
|
-- Color --
|
-----------
|
-----------
|
|
|
function Color (Node : Node_Access) return Color_Type is
|
function Color (Node : Node_Access) return Color_Type is
|
begin
|
begin
|
return Node.Color;
|
return Node.Color;
|
end Color;
|
end Color;
|
|
|
--------------
|
--------------
|
-- Contains --
|
-- Contains --
|
--------------
|
--------------
|
|
|
function Contains (Container : Set; Item : Element_Type) return Boolean is
|
function Contains (Container : Set; Item : Element_Type) return Boolean is
|
begin
|
begin
|
return Find (Container, Item) /= No_Element;
|
return Find (Container, Item) /= No_Element;
|
end Contains;
|
end Contains;
|
|
|
---------------
|
---------------
|
-- Copy_Node --
|
-- Copy_Node --
|
---------------
|
---------------
|
|
|
function Copy_Node (Source : Node_Access) return Node_Access is
|
function Copy_Node (Source : Node_Access) return Node_Access is
|
Target : constant Node_Access :=
|
Target : constant Node_Access :=
|
new Node_Type'(Parent => null,
|
new Node_Type'(Parent => null,
|
Left => null,
|
Left => null,
|
Right => null,
|
Right => null,
|
Color => Source.Color,
|
Color => Source.Color,
|
Element => Source.Element);
|
Element => Source.Element);
|
begin
|
begin
|
return Target;
|
return Target;
|
end Copy_Node;
|
end Copy_Node;
|
|
|
------------
|
------------
|
-- Delete --
|
-- Delete --
|
------------
|
------------
|
|
|
procedure Delete (Container : in out Set; Item : Element_Type) is
|
procedure Delete (Container : in out Set; Item : Element_Type) is
|
Tree : Tree_Type renames Container.Tree;
|
Tree : Tree_Type renames Container.Tree;
|
Node : Node_Access := Element_Keys.Ceiling (Tree, Item);
|
Node : Node_Access := Element_Keys.Ceiling (Tree, Item);
|
Done : constant Node_Access := Element_Keys.Upper_Bound (Tree, Item);
|
Done : constant Node_Access := Element_Keys.Upper_Bound (Tree, Item);
|
X : Node_Access;
|
X : Node_Access;
|
|
|
begin
|
begin
|
if Node = Done then
|
if Node = Done then
|
raise Constraint_Error with
|
raise Constraint_Error with
|
"attempt to delete element not in set";
|
"attempt to delete element not in set";
|
end if;
|
end if;
|
|
|
loop
|
loop
|
X := Node;
|
X := Node;
|
Node := Tree_Operations.Next (Node);
|
Node := Tree_Operations.Next (Node);
|
Tree_Operations.Delete_Node_Sans_Free (Tree, X);
|
Tree_Operations.Delete_Node_Sans_Free (Tree, X);
|
Free (X);
|
Free (X);
|
|
|
exit when Node = Done;
|
exit when Node = Done;
|
end loop;
|
end loop;
|
end Delete;
|
end Delete;
|
|
|
procedure Delete (Container : in out Set; Position : in out Cursor) is
|
procedure Delete (Container : in out Set; Position : in out Cursor) is
|
begin
|
begin
|
if Position.Node = null then
|
if Position.Node = null then
|
raise Constraint_Error with "Position cursor equals No_Element";
|
raise Constraint_Error with "Position cursor equals No_Element";
|
end if;
|
end if;
|
|
|
if Position.Container /= Container'Unrestricted_Access then
|
if Position.Container /= Container'Unrestricted_Access then
|
raise Program_Error with "Position cursor designates wrong set";
|
raise Program_Error with "Position cursor designates wrong set";
|
end if;
|
end if;
|
|
|
pragma Assert (Vet (Container.Tree, Position.Node),
|
pragma Assert (Vet (Container.Tree, Position.Node),
|
"bad cursor in Delete");
|
"bad cursor in Delete");
|
|
|
Delete_Node_Sans_Free (Container.Tree, Position.Node);
|
Delete_Node_Sans_Free (Container.Tree, Position.Node);
|
Free (Position.Node);
|
Free (Position.Node);
|
|
|
Position.Container := null;
|
Position.Container := null;
|
end Delete;
|
end Delete;
|
|
|
------------------
|
------------------
|
-- Delete_First --
|
-- Delete_First --
|
------------------
|
------------------
|
|
|
procedure Delete_First (Container : in out Set) is
|
procedure Delete_First (Container : in out Set) is
|
Tree : Tree_Type renames Container.Tree;
|
Tree : Tree_Type renames Container.Tree;
|
X : Node_Access := Tree.First;
|
X : Node_Access := Tree.First;
|
|
|
begin
|
begin
|
if X = null then
|
if X = null then
|
return;
|
return;
|
end if;
|
end if;
|
|
|
Tree_Operations.Delete_Node_Sans_Free (Tree, X);
|
Tree_Operations.Delete_Node_Sans_Free (Tree, X);
|
Free (X);
|
Free (X);
|
end Delete_First;
|
end Delete_First;
|
|
|
-----------------
|
-----------------
|
-- Delete_Last --
|
-- Delete_Last --
|
-----------------
|
-----------------
|
|
|
procedure Delete_Last (Container : in out Set) is
|
procedure Delete_Last (Container : in out Set) is
|
Tree : Tree_Type renames Container.Tree;
|
Tree : Tree_Type renames Container.Tree;
|
X : Node_Access := Tree.Last;
|
X : Node_Access := Tree.Last;
|
|
|
begin
|
begin
|
if X = null then
|
if X = null then
|
return;
|
return;
|
end if;
|
end if;
|
|
|
Tree_Operations.Delete_Node_Sans_Free (Tree, X);
|
Tree_Operations.Delete_Node_Sans_Free (Tree, X);
|
Free (X);
|
Free (X);
|
end Delete_Last;
|
end Delete_Last;
|
|
|
----------------
|
----------------
|
-- Difference --
|
-- Difference --
|
----------------
|
----------------
|
|
|
procedure Difference (Target : in out Set; Source : Set) is
|
procedure Difference (Target : in out Set; Source : Set) is
|
begin
|
begin
|
Set_Ops.Difference (Target.Tree, Source.Tree);
|
Set_Ops.Difference (Target.Tree, Source.Tree);
|
end Difference;
|
end Difference;
|
|
|
function Difference (Left, Right : Set) return Set is
|
function Difference (Left, Right : Set) return Set is
|
Tree : constant Tree_Type :=
|
Tree : constant Tree_Type :=
|
Set_Ops.Difference (Left.Tree, Right.Tree);
|
Set_Ops.Difference (Left.Tree, Right.Tree);
|
begin
|
begin
|
return Set'(Controlled with Tree);
|
return Set'(Controlled with Tree);
|
end Difference;
|
end Difference;
|
|
|
-------------
|
-------------
|
-- Element --
|
-- Element --
|
-------------
|
-------------
|
|
|
function Element (Position : Cursor) return Element_Type is
|
function Element (Position : Cursor) return Element_Type is
|
begin
|
begin
|
if Position.Node = null then
|
if Position.Node = null then
|
raise Constraint_Error with "Position cursor equals No_Element";
|
raise Constraint_Error with "Position cursor equals No_Element";
|
end if;
|
end if;
|
|
|
pragma Assert (Vet (Position.Container.Tree, Position.Node),
|
pragma Assert (Vet (Position.Container.Tree, Position.Node),
|
"bad cursor in Element");
|
"bad cursor in Element");
|
|
|
return Position.Node.Element;
|
return Position.Node.Element;
|
end Element;
|
end Element;
|
|
|
-------------------------
|
-------------------------
|
-- Equivalent_Elements --
|
-- Equivalent_Elements --
|
-------------------------
|
-------------------------
|
|
|
function Equivalent_Elements (Left, Right : Element_Type) return Boolean is
|
function Equivalent_Elements (Left, Right : Element_Type) return Boolean is
|
begin
|
begin
|
if Left < Right
|
if Left < Right
|
or else Right < Left
|
or else Right < Left
|
then
|
then
|
return False;
|
return False;
|
else
|
else
|
return True;
|
return True;
|
end if;
|
end if;
|
end Equivalent_Elements;
|
end Equivalent_Elements;
|
|
|
---------------------
|
---------------------
|
-- Equivalent_Sets --
|
-- Equivalent_Sets --
|
---------------------
|
---------------------
|
|
|
function Equivalent_Sets (Left, Right : Set) return Boolean is
|
function Equivalent_Sets (Left, Right : Set) return Boolean is
|
|
|
function Is_Equivalent_Node_Node (L, R : Node_Access) return Boolean;
|
function Is_Equivalent_Node_Node (L, R : Node_Access) return Boolean;
|
pragma Inline (Is_Equivalent_Node_Node);
|
pragma Inline (Is_Equivalent_Node_Node);
|
|
|
function Is_Equivalent is
|
function Is_Equivalent is
|
new Tree_Operations.Generic_Equal (Is_Equivalent_Node_Node);
|
new Tree_Operations.Generic_Equal (Is_Equivalent_Node_Node);
|
|
|
-----------------------------
|
-----------------------------
|
-- Is_Equivalent_Node_Node --
|
-- Is_Equivalent_Node_Node --
|
-----------------------------
|
-----------------------------
|
|
|
function Is_Equivalent_Node_Node (L, R : Node_Access) return Boolean is
|
function Is_Equivalent_Node_Node (L, R : Node_Access) return Boolean is
|
begin
|
begin
|
if L.Element < R.Element then
|
if L.Element < R.Element then
|
return False;
|
return False;
|
elsif R.Element < L.Element then
|
elsif R.Element < L.Element then
|
return False;
|
return False;
|
else
|
else
|
return True;
|
return True;
|
end if;
|
end if;
|
end Is_Equivalent_Node_Node;
|
end Is_Equivalent_Node_Node;
|
|
|
-- Start of processing for Equivalent_Sets
|
-- Start of processing for Equivalent_Sets
|
|
|
begin
|
begin
|
return Is_Equivalent (Left.Tree, Right.Tree);
|
return Is_Equivalent (Left.Tree, Right.Tree);
|
end Equivalent_Sets;
|
end Equivalent_Sets;
|
|
|
-------------
|
-------------
|
-- Exclude --
|
-- Exclude --
|
-------------
|
-------------
|
|
|
procedure Exclude (Container : in out Set; Item : Element_Type) is
|
procedure Exclude (Container : in out Set; Item : Element_Type) is
|
Tree : Tree_Type renames Container.Tree;
|
Tree : Tree_Type renames Container.Tree;
|
Node : Node_Access := Element_Keys.Ceiling (Tree, Item);
|
Node : Node_Access := Element_Keys.Ceiling (Tree, Item);
|
Done : constant Node_Access := Element_Keys.Upper_Bound (Tree, Item);
|
Done : constant Node_Access := Element_Keys.Upper_Bound (Tree, Item);
|
X : Node_Access;
|
X : Node_Access;
|
begin
|
begin
|
while Node /= Done loop
|
while Node /= Done loop
|
X := Node;
|
X := Node;
|
Node := Tree_Operations.Next (Node);
|
Node := Tree_Operations.Next (Node);
|
Tree_Operations.Delete_Node_Sans_Free (Tree, X);
|
Tree_Operations.Delete_Node_Sans_Free (Tree, X);
|
Free (X);
|
Free (X);
|
end loop;
|
end loop;
|
end Exclude;
|
end Exclude;
|
|
|
----------
|
----------
|
-- Find --
|
-- Find --
|
----------
|
----------
|
|
|
function Find (Container : Set; Item : Element_Type) return Cursor is
|
function Find (Container : Set; Item : Element_Type) return Cursor is
|
Node : constant Node_Access :=
|
Node : constant Node_Access :=
|
Element_Keys.Find (Container.Tree, Item);
|
Element_Keys.Find (Container.Tree, Item);
|
|
|
begin
|
begin
|
if Node = null then
|
if Node = null then
|
return No_Element;
|
return No_Element;
|
end if;
|
end if;
|
|
|
return Cursor'(Container'Unrestricted_Access, Node);
|
return Cursor'(Container'Unrestricted_Access, Node);
|
end Find;
|
end Find;
|
|
|
-----------
|
-----------
|
-- First --
|
-- First --
|
-----------
|
-----------
|
|
|
function First (Container : Set) return Cursor is
|
function First (Container : Set) return Cursor is
|
begin
|
begin
|
if Container.Tree.First = null then
|
if Container.Tree.First = null then
|
return No_Element;
|
return No_Element;
|
end if;
|
end if;
|
|
|
return Cursor'(Container'Unrestricted_Access, Container.Tree.First);
|
return Cursor'(Container'Unrestricted_Access, Container.Tree.First);
|
end First;
|
end First;
|
|
|
-------------------
|
-------------------
|
-- First_Element --
|
-- First_Element --
|
-------------------
|
-------------------
|
|
|
function First_Element (Container : Set) return Element_Type is
|
function First_Element (Container : Set) return Element_Type is
|
begin
|
begin
|
if Container.Tree.First = null then
|
if Container.Tree.First = null then
|
raise Constraint_Error with "set is empty";
|
raise Constraint_Error with "set is empty";
|
end if;
|
end if;
|
|
|
return Container.Tree.First.Element;
|
return Container.Tree.First.Element;
|
end First_Element;
|
end First_Element;
|
|
|
-----------
|
-----------
|
-- Floor --
|
-- Floor --
|
-----------
|
-----------
|
|
|
function Floor (Container : Set; Item : Element_Type) return Cursor is
|
function Floor (Container : Set; Item : Element_Type) return Cursor is
|
Node : constant Node_Access :=
|
Node : constant Node_Access :=
|
Element_Keys.Floor (Container.Tree, Item);
|
Element_Keys.Floor (Container.Tree, Item);
|
|
|
begin
|
begin
|
if Node = null then
|
if Node = null then
|
return No_Element;
|
return No_Element;
|
end if;
|
end if;
|
|
|
return Cursor'(Container'Unrestricted_Access, Node);
|
return Cursor'(Container'Unrestricted_Access, Node);
|
end Floor;
|
end Floor;
|
|
|
----------
|
----------
|
-- Free --
|
-- Free --
|
----------
|
----------
|
|
|
procedure Free (X : in out Node_Access) is
|
procedure Free (X : in out Node_Access) is
|
procedure Deallocate is
|
procedure Deallocate is
|
new Ada.Unchecked_Deallocation (Node_Type, Node_Access);
|
new Ada.Unchecked_Deallocation (Node_Type, Node_Access);
|
|
|
begin
|
begin
|
if X /= null then
|
if X /= null then
|
X.Parent := X;
|
X.Parent := X;
|
X.Left := X;
|
X.Left := X;
|
X.Right := X;
|
X.Right := X;
|
|
|
Deallocate (X);
|
Deallocate (X);
|
end if;
|
end if;
|
end Free;
|
end Free;
|
|
|
------------------
|
------------------
|
-- Generic_Keys --
|
-- Generic_Keys --
|
------------------
|
------------------
|
|
|
package body Generic_Keys is
|
package body Generic_Keys is
|
|
|
-----------------------
|
-----------------------
|
-- Local Subprograms --
|
-- Local Subprograms --
|
-----------------------
|
-----------------------
|
|
|
function Is_Greater_Key_Node
|
function Is_Greater_Key_Node
|
(Left : Key_Type;
|
(Left : Key_Type;
|
Right : Node_Access) return Boolean;
|
Right : Node_Access) return Boolean;
|
pragma Inline (Is_Greater_Key_Node);
|
pragma Inline (Is_Greater_Key_Node);
|
|
|
function Is_Less_Key_Node
|
function Is_Less_Key_Node
|
(Left : Key_Type;
|
(Left : Key_Type;
|
Right : Node_Access) return Boolean;
|
Right : Node_Access) return Boolean;
|
pragma Inline (Is_Less_Key_Node);
|
pragma Inline (Is_Less_Key_Node);
|
|
|
--------------------------
|
--------------------------
|
-- Local_Instantiations --
|
-- Local_Instantiations --
|
--------------------------
|
--------------------------
|
|
|
package Key_Keys is
|
package Key_Keys is
|
new Red_Black_Trees.Generic_Keys
|
new Red_Black_Trees.Generic_Keys
|
(Tree_Operations => Tree_Operations,
|
(Tree_Operations => Tree_Operations,
|
Key_Type => Key_Type,
|
Key_Type => Key_Type,
|
Is_Less_Key_Node => Is_Less_Key_Node,
|
Is_Less_Key_Node => Is_Less_Key_Node,
|
Is_Greater_Key_Node => Is_Greater_Key_Node);
|
Is_Greater_Key_Node => Is_Greater_Key_Node);
|
|
|
-------------
|
-------------
|
-- Ceiling --
|
-- Ceiling --
|
-------------
|
-------------
|
|
|
function Ceiling (Container : Set; Key : Key_Type) return Cursor is
|
function Ceiling (Container : Set; Key : Key_Type) return Cursor is
|
Node : constant Node_Access :=
|
Node : constant Node_Access :=
|
Key_Keys.Ceiling (Container.Tree, Key);
|
Key_Keys.Ceiling (Container.Tree, Key);
|
|
|
begin
|
begin
|
if Node = null then
|
if Node = null then
|
return No_Element;
|
return No_Element;
|
end if;
|
end if;
|
|
|
return Cursor'(Container'Unrestricted_Access, Node);
|
return Cursor'(Container'Unrestricted_Access, Node);
|
end Ceiling;
|
end Ceiling;
|
|
|
--------------
|
--------------
|
-- Contains --
|
-- Contains --
|
--------------
|
--------------
|
|
|
function Contains (Container : Set; Key : Key_Type) return Boolean is
|
function Contains (Container : Set; Key : Key_Type) return Boolean is
|
begin
|
begin
|
return Find (Container, Key) /= No_Element;
|
return Find (Container, Key) /= No_Element;
|
end Contains;
|
end Contains;
|
|
|
------------
|
------------
|
-- Delete --
|
-- Delete --
|
------------
|
------------
|
|
|
procedure Delete (Container : in out Set; Key : Key_Type) is
|
procedure Delete (Container : in out Set; Key : Key_Type) is
|
Tree : Tree_Type renames Container.Tree;
|
Tree : Tree_Type renames Container.Tree;
|
Node : Node_Access := Key_Keys.Ceiling (Tree, Key);
|
Node : Node_Access := Key_Keys.Ceiling (Tree, Key);
|
Done : constant Node_Access := Key_Keys.Upper_Bound (Tree, Key);
|
Done : constant Node_Access := Key_Keys.Upper_Bound (Tree, Key);
|
X : Node_Access;
|
X : Node_Access;
|
|
|
begin
|
begin
|
if Node = Done then
|
if Node = Done then
|
raise Constraint_Error with "attempt to delete key not in set";
|
raise Constraint_Error with "attempt to delete key not in set";
|
end if;
|
end if;
|
|
|
loop
|
loop
|
X := Node;
|
X := Node;
|
Node := Tree_Operations.Next (Node);
|
Node := Tree_Operations.Next (Node);
|
Tree_Operations.Delete_Node_Sans_Free (Tree, X);
|
Tree_Operations.Delete_Node_Sans_Free (Tree, X);
|
Free (X);
|
Free (X);
|
|
|
exit when Node = Done;
|
exit when Node = Done;
|
end loop;
|
end loop;
|
end Delete;
|
end Delete;
|
|
|
-------------
|
-------------
|
-- Element --
|
-- Element --
|
-------------
|
-------------
|
|
|
function Element (Container : Set; Key : Key_Type) return Element_Type is
|
function Element (Container : Set; Key : Key_Type) return Element_Type is
|
Node : constant Node_Access :=
|
Node : constant Node_Access :=
|
Key_Keys.Find (Container.Tree, Key);
|
Key_Keys.Find (Container.Tree, Key);
|
begin
|
begin
|
if Node = null then
|
if Node = null then
|
raise Constraint_Error with "key not in set";
|
raise Constraint_Error with "key not in set";
|
end if;
|
end if;
|
|
|
return Node.Element;
|
return Node.Element;
|
end Element;
|
end Element;
|
|
|
---------------------
|
---------------------
|
-- Equivalent_Keys --
|
-- Equivalent_Keys --
|
---------------------
|
---------------------
|
|
|
function Equivalent_Keys (Left, Right : Key_Type) return Boolean is
|
function Equivalent_Keys (Left, Right : Key_Type) return Boolean is
|
begin
|
begin
|
if Left < Right
|
if Left < Right
|
or else Right < Left
|
or else Right < Left
|
then
|
then
|
return False;
|
return False;
|
else
|
else
|
return True;
|
return True;
|
end if;
|
end if;
|
end Equivalent_Keys;
|
end Equivalent_Keys;
|
|
|
-------------
|
-------------
|
-- Exclude --
|
-- Exclude --
|
-------------
|
-------------
|
|
|
procedure Exclude (Container : in out Set; Key : Key_Type) is
|
procedure Exclude (Container : in out Set; Key : Key_Type) is
|
Tree : Tree_Type renames Container.Tree;
|
Tree : Tree_Type renames Container.Tree;
|
Node : Node_Access := Key_Keys.Ceiling (Tree, Key);
|
Node : Node_Access := Key_Keys.Ceiling (Tree, Key);
|
Done : constant Node_Access := Key_Keys.Upper_Bound (Tree, Key);
|
Done : constant Node_Access := Key_Keys.Upper_Bound (Tree, Key);
|
X : Node_Access;
|
X : Node_Access;
|
|
|
begin
|
begin
|
while Node /= Done loop
|
while Node /= Done loop
|
X := Node;
|
X := Node;
|
Node := Tree_Operations.Next (Node);
|
Node := Tree_Operations.Next (Node);
|
Tree_Operations.Delete_Node_Sans_Free (Tree, X);
|
Tree_Operations.Delete_Node_Sans_Free (Tree, X);
|
Free (X);
|
Free (X);
|
end loop;
|
end loop;
|
end Exclude;
|
end Exclude;
|
|
|
----------
|
----------
|
-- Find --
|
-- Find --
|
----------
|
----------
|
|
|
function Find (Container : Set; Key : Key_Type) return Cursor is
|
function Find (Container : Set; Key : Key_Type) return Cursor is
|
Node : constant Node_Access :=
|
Node : constant Node_Access :=
|
Key_Keys.Find (Container.Tree, Key);
|
Key_Keys.Find (Container.Tree, Key);
|
|
|
begin
|
begin
|
if Node = null then
|
if Node = null then
|
return No_Element;
|
return No_Element;
|
end if;
|
end if;
|
|
|
return Cursor'(Container'Unrestricted_Access, Node);
|
return Cursor'(Container'Unrestricted_Access, Node);
|
end Find;
|
end Find;
|
|
|
-----------
|
-----------
|
-- Floor --
|
-- Floor --
|
-----------
|
-----------
|
|
|
function Floor (Container : Set; Key : Key_Type) return Cursor is
|
function Floor (Container : Set; Key : Key_Type) return Cursor is
|
Node : constant Node_Access :=
|
Node : constant Node_Access :=
|
Key_Keys.Floor (Container.Tree, Key);
|
Key_Keys.Floor (Container.Tree, Key);
|
|
|
begin
|
begin
|
if Node = null then
|
if Node = null then
|
return No_Element;
|
return No_Element;
|
end if;
|
end if;
|
|
|
return Cursor'(Container'Unrestricted_Access, Node);
|
return Cursor'(Container'Unrestricted_Access, Node);
|
end Floor;
|
end Floor;
|
|
|
-------------------------
|
-------------------------
|
-- Is_Greater_Key_Node --
|
-- Is_Greater_Key_Node --
|
-------------------------
|
-------------------------
|
|
|
function Is_Greater_Key_Node
|
function Is_Greater_Key_Node
|
(Left : Key_Type;
|
(Left : Key_Type;
|
Right : Node_Access) return Boolean is
|
Right : Node_Access) return Boolean is
|
begin
|
begin
|
return Key (Right.Element) < Left;
|
return Key (Right.Element) < Left;
|
end Is_Greater_Key_Node;
|
end Is_Greater_Key_Node;
|
|
|
----------------------
|
----------------------
|
-- Is_Less_Key_Node --
|
-- Is_Less_Key_Node --
|
----------------------
|
----------------------
|
|
|
function Is_Less_Key_Node
|
function Is_Less_Key_Node
|
(Left : Key_Type;
|
(Left : Key_Type;
|
Right : Node_Access) return Boolean is
|
Right : Node_Access) return Boolean is
|
begin
|
begin
|
return Left < Key (Right.Element);
|
return Left < Key (Right.Element);
|
end Is_Less_Key_Node;
|
end Is_Less_Key_Node;
|
|
|
-------------
|
-------------
|
-- Iterate --
|
-- Iterate --
|
-------------
|
-------------
|
|
|
procedure Iterate
|
procedure Iterate
|
(Container : Set;
|
(Container : Set;
|
Key : Key_Type;
|
Key : Key_Type;
|
Process : not null access procedure (Position : Cursor))
|
Process : not null access procedure (Position : Cursor))
|
is
|
is
|
procedure Process_Node (Node : Node_Access);
|
procedure Process_Node (Node : Node_Access);
|
pragma Inline (Process_Node);
|
pragma Inline (Process_Node);
|
|
|
procedure Local_Iterate is
|
procedure Local_Iterate is
|
new Key_Keys.Generic_Iteration (Process_Node);
|
new Key_Keys.Generic_Iteration (Process_Node);
|
|
|
------------------
|
------------------
|
-- Process_Node --
|
-- Process_Node --
|
------------------
|
------------------
|
|
|
procedure Process_Node (Node : Node_Access) is
|
procedure Process_Node (Node : Node_Access) is
|
begin
|
begin
|
Process (Cursor'(Container'Unrestricted_Access, Node));
|
Process (Cursor'(Container'Unrestricted_Access, Node));
|
end Process_Node;
|
end Process_Node;
|
|
|
T : Tree_Type renames Container.Tree'Unrestricted_Access.all;
|
T : Tree_Type renames Container.Tree'Unrestricted_Access.all;
|
B : Natural renames T.Busy;
|
B : Natural renames T.Busy;
|
|
|
-- Start of processing for Iterate
|
-- Start of processing for Iterate
|
|
|
begin
|
begin
|
B := B + 1;
|
B := B + 1;
|
|
|
begin
|
begin
|
Local_Iterate (T, Key);
|
Local_Iterate (T, Key);
|
exception
|
exception
|
when others =>
|
when others =>
|
B := B - 1;
|
B := B - 1;
|
raise;
|
raise;
|
end;
|
end;
|
|
|
B := B - 1;
|
B := B - 1;
|
end Iterate;
|
end Iterate;
|
|
|
---------
|
---------
|
-- Key --
|
-- Key --
|
---------
|
---------
|
|
|
function Key (Position : Cursor) return Key_Type is
|
function Key (Position : Cursor) return Key_Type is
|
begin
|
begin
|
if Position.Node = null then
|
if Position.Node = null then
|
raise Constraint_Error with
|
raise Constraint_Error with
|
"Position cursor equals No_Element";
|
"Position cursor equals No_Element";
|
end if;
|
end if;
|
|
|
pragma Assert (Vet (Position.Container.Tree, Position.Node),
|
pragma Assert (Vet (Position.Container.Tree, Position.Node),
|
"bad cursor in Key");
|
"bad cursor in Key");
|
|
|
return Key (Position.Node.Element);
|
return Key (Position.Node.Element);
|
end Key;
|
end Key;
|
|
|
---------------------
|
---------------------
|
-- Reverse_Iterate --
|
-- Reverse_Iterate --
|
---------------------
|
---------------------
|
|
|
procedure Reverse_Iterate
|
procedure Reverse_Iterate
|
(Container : Set;
|
(Container : Set;
|
Key : Key_Type;
|
Key : Key_Type;
|
Process : not null access procedure (Position : Cursor))
|
Process : not null access procedure (Position : Cursor))
|
is
|
is
|
procedure Process_Node (Node : Node_Access);
|
procedure Process_Node (Node : Node_Access);
|
pragma Inline (Process_Node);
|
pragma Inline (Process_Node);
|
|
|
procedure Local_Reverse_Iterate is
|
procedure Local_Reverse_Iterate is
|
new Key_Keys.Generic_Reverse_Iteration (Process_Node);
|
new Key_Keys.Generic_Reverse_Iteration (Process_Node);
|
|
|
------------------
|
------------------
|
-- Process_Node --
|
-- Process_Node --
|
------------------
|
------------------
|
|
|
procedure Process_Node (Node : Node_Access) is
|
procedure Process_Node (Node : Node_Access) is
|
begin
|
begin
|
Process (Cursor'(Container'Unrestricted_Access, Node));
|
Process (Cursor'(Container'Unrestricted_Access, Node));
|
end Process_Node;
|
end Process_Node;
|
|
|
T : Tree_Type renames Container.Tree'Unrestricted_Access.all;
|
T : Tree_Type renames Container.Tree'Unrestricted_Access.all;
|
B : Natural renames T.Busy;
|
B : Natural renames T.Busy;
|
|
|
-- Start of processing for Reverse_Iterate
|
-- Start of processing for Reverse_Iterate
|
|
|
begin
|
begin
|
B := B + 1;
|
B := B + 1;
|
|
|
begin
|
begin
|
Local_Reverse_Iterate (T, Key);
|
Local_Reverse_Iterate (T, Key);
|
exception
|
exception
|
when others =>
|
when others =>
|
B := B - 1;
|
B := B - 1;
|
raise;
|
raise;
|
end;
|
end;
|
|
|
B := B - 1;
|
B := B - 1;
|
end Reverse_Iterate;
|
end Reverse_Iterate;
|
|
|
--------------------
|
--------------------
|
-- Update_Element --
|
-- Update_Element --
|
--------------------
|
--------------------
|
|
|
procedure Update_Element
|
procedure Update_Element
|
(Container : in out Set;
|
(Container : in out Set;
|
Position : Cursor;
|
Position : Cursor;
|
Process : not null access procedure (Element : in out Element_Type))
|
Process : not null access procedure (Element : in out Element_Type))
|
is
|
is
|
Tree : Tree_Type renames Container.Tree;
|
Tree : Tree_Type renames Container.Tree;
|
Node : constant Node_Access := Position.Node;
|
Node : constant Node_Access := Position.Node;
|
|
|
begin
|
begin
|
if Node = null then
|
if Node = null then
|
raise Constraint_Error with
|
raise Constraint_Error with
|
"Position cursor equals No_Element";
|
"Position cursor equals No_Element";
|
end if;
|
end if;
|
|
|
if Position.Container /= Container'Unrestricted_Access then
|
if Position.Container /= Container'Unrestricted_Access then
|
raise Program_Error with
|
raise Program_Error with
|
"Position cursor designates wrong set";
|
"Position cursor designates wrong set";
|
end if;
|
end if;
|
|
|
pragma Assert (Vet (Tree, Node),
|
pragma Assert (Vet (Tree, Node),
|
"bad cursor in Update_Element");
|
"bad cursor in Update_Element");
|
|
|
declare
|
declare
|
E : Element_Type renames Node.Element;
|
E : Element_Type renames Node.Element;
|
K : constant Key_Type := Key (E);
|
K : constant Key_Type := Key (E);
|
|
|
B : Natural renames Tree.Busy;
|
B : Natural renames Tree.Busy;
|
L : Natural renames Tree.Lock;
|
L : Natural renames Tree.Lock;
|
|
|
begin
|
begin
|
B := B + 1;
|
B := B + 1;
|
L := L + 1;
|
L := L + 1;
|
|
|
begin
|
begin
|
Process (E);
|
Process (E);
|
exception
|
exception
|
when others =>
|
when others =>
|
L := L - 1;
|
L := L - 1;
|
B := B - 1;
|
B := B - 1;
|
raise;
|
raise;
|
end;
|
end;
|
|
|
L := L - 1;
|
L := L - 1;
|
B := B - 1;
|
B := B - 1;
|
|
|
if Equivalent_Keys (Left => K, Right => Key (E)) then
|
if Equivalent_Keys (Left => K, Right => Key (E)) then
|
return;
|
return;
|
end if;
|
end if;
|
end;
|
end;
|
|
|
-- Delete_Node checks busy-bit
|
-- Delete_Node checks busy-bit
|
|
|
Tree_Operations.Delete_Node_Sans_Free (Tree, Node);
|
Tree_Operations.Delete_Node_Sans_Free (Tree, Node);
|
|
|
Insert_New_Item : declare
|
Insert_New_Item : declare
|
function New_Node return Node_Access;
|
function New_Node return Node_Access;
|
pragma Inline (New_Node);
|
pragma Inline (New_Node);
|
|
|
procedure Insert_Post is
|
procedure Insert_Post is
|
new Element_Keys.Generic_Insert_Post (New_Node);
|
new Element_Keys.Generic_Insert_Post (New_Node);
|
|
|
procedure Unconditional_Insert is
|
procedure Unconditional_Insert is
|
new Element_Keys.Generic_Unconditional_Insert (Insert_Post);
|
new Element_Keys.Generic_Unconditional_Insert (Insert_Post);
|
|
|
--------------
|
--------------
|
-- New_Node --
|
-- New_Node --
|
--------------
|
--------------
|
|
|
function New_Node return Node_Access is
|
function New_Node return Node_Access is
|
begin
|
begin
|
Node.Color := Red_Black_Trees.Red;
|
Node.Color := Red_Black_Trees.Red;
|
Node.Parent := null;
|
Node.Parent := null;
|
Node.Left := null;
|
Node.Left := null;
|
Node.Right := null;
|
Node.Right := null;
|
|
|
return Node;
|
return Node;
|
end New_Node;
|
end New_Node;
|
|
|
Result : Node_Access;
|
Result : Node_Access;
|
|
|
-- Start of processing for Insert_New_Item
|
-- Start of processing for Insert_New_Item
|
|
|
begin
|
begin
|
Unconditional_Insert
|
Unconditional_Insert
|
(Tree => Tree,
|
(Tree => Tree,
|
Key => Node.Element,
|
Key => Node.Element,
|
Node => Result);
|
Node => Result);
|
|
|
pragma Assert (Result = Node);
|
pragma Assert (Result = Node);
|
end Insert_New_Item;
|
end Insert_New_Item;
|
end Update_Element;
|
end Update_Element;
|
|
|
end Generic_Keys;
|
end Generic_Keys;
|
|
|
-----------------
|
-----------------
|
-- Has_Element --
|
-- Has_Element --
|
-----------------
|
-----------------
|
|
|
function Has_Element (Position : Cursor) return Boolean is
|
function Has_Element (Position : Cursor) return Boolean is
|
begin
|
begin
|
return Position /= No_Element;
|
return Position /= No_Element;
|
end Has_Element;
|
end Has_Element;
|
|
|
------------
|
------------
|
-- Insert --
|
-- Insert --
|
------------
|
------------
|
|
|
procedure Insert (Container : in out Set; New_Item : Element_Type) is
|
procedure Insert (Container : in out Set; New_Item : Element_Type) is
|
Position : Cursor;
|
Position : Cursor;
|
pragma Unreferenced (Position);
|
pragma Unreferenced (Position);
|
begin
|
begin
|
Insert (Container, New_Item, Position);
|
Insert (Container, New_Item, Position);
|
end Insert;
|
end Insert;
|
|
|
procedure Insert
|
procedure Insert
|
(Container : in out Set;
|
(Container : in out Set;
|
New_Item : Element_Type;
|
New_Item : Element_Type;
|
Position : out Cursor)
|
Position : out Cursor)
|
is
|
is
|
begin
|
begin
|
Insert_Sans_Hint (Container.Tree, New_Item, Position.Node);
|
Insert_Sans_Hint (Container.Tree, New_Item, Position.Node);
|
Position.Container := Container'Unrestricted_Access;
|
Position.Container := Container'Unrestricted_Access;
|
end Insert;
|
end Insert;
|
|
|
----------------------
|
----------------------
|
-- Insert_Sans_Hint --
|
-- Insert_Sans_Hint --
|
----------------------
|
----------------------
|
|
|
procedure Insert_Sans_Hint
|
procedure Insert_Sans_Hint
|
(Tree : in out Tree_Type;
|
(Tree : in out Tree_Type;
|
New_Item : Element_Type;
|
New_Item : Element_Type;
|
Node : out Node_Access)
|
Node : out Node_Access)
|
is
|
is
|
function New_Node return Node_Access;
|
function New_Node return Node_Access;
|
pragma Inline (New_Node);
|
pragma Inline (New_Node);
|
|
|
procedure Insert_Post is
|
procedure Insert_Post is
|
new Element_Keys.Generic_Insert_Post (New_Node);
|
new Element_Keys.Generic_Insert_Post (New_Node);
|
|
|
procedure Unconditional_Insert is
|
procedure Unconditional_Insert is
|
new Element_Keys.Generic_Unconditional_Insert (Insert_Post);
|
new Element_Keys.Generic_Unconditional_Insert (Insert_Post);
|
|
|
--------------
|
--------------
|
-- New_Node --
|
-- New_Node --
|
--------------
|
--------------
|
|
|
function New_Node return Node_Access is
|
function New_Node return Node_Access is
|
Node : constant Node_Access :=
|
Node : constant Node_Access :=
|
new Node_Type'(Parent => null,
|
new Node_Type'(Parent => null,
|
Left => null,
|
Left => null,
|
Right => null,
|
Right => null,
|
Color => Red_Black_Trees.Red,
|
Color => Red_Black_Trees.Red,
|
Element => New_Item);
|
Element => New_Item);
|
begin
|
begin
|
return Node;
|
return Node;
|
end New_Node;
|
end New_Node;
|
|
|
-- Start of processing for Insert_Sans_Hint
|
-- Start of processing for Insert_Sans_Hint
|
|
|
begin
|
begin
|
Unconditional_Insert (Tree, New_Item, Node);
|
Unconditional_Insert (Tree, New_Item, Node);
|
end Insert_Sans_Hint;
|
end Insert_Sans_Hint;
|
|
|
----------------------
|
----------------------
|
-- Insert_With_Hint --
|
-- Insert_With_Hint --
|
----------------------
|
----------------------
|
|
|
procedure Insert_With_Hint
|
procedure Insert_With_Hint
|
(Dst_Tree : in out Tree_Type;
|
(Dst_Tree : in out Tree_Type;
|
Dst_Hint : Node_Access;
|
Dst_Hint : Node_Access;
|
Src_Node : Node_Access;
|
Src_Node : Node_Access;
|
Dst_Node : out Node_Access)
|
Dst_Node : out Node_Access)
|
is
|
is
|
function New_Node return Node_Access;
|
function New_Node return Node_Access;
|
pragma Inline (New_Node);
|
pragma Inline (New_Node);
|
|
|
procedure Insert_Post is
|
procedure Insert_Post is
|
new Element_Keys.Generic_Insert_Post (New_Node);
|
new Element_Keys.Generic_Insert_Post (New_Node);
|
|
|
procedure Insert_Sans_Hint is
|
procedure Insert_Sans_Hint is
|
new Element_Keys.Generic_Unconditional_Insert (Insert_Post);
|
new Element_Keys.Generic_Unconditional_Insert (Insert_Post);
|
|
|
procedure Local_Insert_With_Hint is
|
procedure Local_Insert_With_Hint is
|
new Element_Keys.Generic_Unconditional_Insert_With_Hint
|
new Element_Keys.Generic_Unconditional_Insert_With_Hint
|
(Insert_Post,
|
(Insert_Post,
|
Insert_Sans_Hint);
|
Insert_Sans_Hint);
|
|
|
--------------
|
--------------
|
-- New_Node --
|
-- New_Node --
|
--------------
|
--------------
|
|
|
function New_Node return Node_Access is
|
function New_Node return Node_Access is
|
Node : constant Node_Access :=
|
Node : constant Node_Access :=
|
new Node_Type'(Parent => null,
|
new Node_Type'(Parent => null,
|
Left => null,
|
Left => null,
|
Right => null,
|
Right => null,
|
Color => Red,
|
Color => Red,
|
Element => Src_Node.Element);
|
Element => Src_Node.Element);
|
begin
|
begin
|
return Node;
|
return Node;
|
end New_Node;
|
end New_Node;
|
|
|
-- Start of processing for Insert_With_Hint
|
-- Start of processing for Insert_With_Hint
|
|
|
begin
|
begin
|
Local_Insert_With_Hint
|
Local_Insert_With_Hint
|
(Dst_Tree,
|
(Dst_Tree,
|
Dst_Hint,
|
Dst_Hint,
|
Src_Node.Element,
|
Src_Node.Element,
|
Dst_Node);
|
Dst_Node);
|
end Insert_With_Hint;
|
end Insert_With_Hint;
|
|
|
------------------
|
------------------
|
-- Intersection --
|
-- Intersection --
|
------------------
|
------------------
|
|
|
procedure Intersection (Target : in out Set; Source : Set) is
|
procedure Intersection (Target : in out Set; Source : Set) is
|
begin
|
begin
|
Set_Ops.Intersection (Target.Tree, Source.Tree);
|
Set_Ops.Intersection (Target.Tree, Source.Tree);
|
end Intersection;
|
end Intersection;
|
|
|
function Intersection (Left, Right : Set) return Set is
|
function Intersection (Left, Right : Set) return Set is
|
Tree : constant Tree_Type :=
|
Tree : constant Tree_Type :=
|
Set_Ops.Intersection (Left.Tree, Right.Tree);
|
Set_Ops.Intersection (Left.Tree, Right.Tree);
|
begin
|
begin
|
return Set'(Controlled with Tree);
|
return Set'(Controlled with Tree);
|
end Intersection;
|
end Intersection;
|
|
|
--------------
|
--------------
|
-- Is_Empty --
|
-- Is_Empty --
|
--------------
|
--------------
|
|
|
function Is_Empty (Container : Set) return Boolean is
|
function Is_Empty (Container : Set) return Boolean is
|
begin
|
begin
|
return Container.Tree.Length = 0;
|
return Container.Tree.Length = 0;
|
end Is_Empty;
|
end Is_Empty;
|
|
|
------------------------
|
------------------------
|
-- Is_Equal_Node_Node --
|
-- Is_Equal_Node_Node --
|
------------------------
|
------------------------
|
|
|
function Is_Equal_Node_Node (L, R : Node_Access) return Boolean is
|
function Is_Equal_Node_Node (L, R : Node_Access) return Boolean is
|
begin
|
begin
|
return L.Element = R.Element;
|
return L.Element = R.Element;
|
end Is_Equal_Node_Node;
|
end Is_Equal_Node_Node;
|
|
|
-----------------------------
|
-----------------------------
|
-- Is_Greater_Element_Node --
|
-- Is_Greater_Element_Node --
|
-----------------------------
|
-----------------------------
|
|
|
function Is_Greater_Element_Node
|
function Is_Greater_Element_Node
|
(Left : Element_Type;
|
(Left : Element_Type;
|
Right : Node_Access) return Boolean
|
Right : Node_Access) return Boolean
|
is
|
is
|
begin
|
begin
|
-- e > node same as node < e
|
-- e > node same as node < e
|
|
|
return Right.Element < Left;
|
return Right.Element < Left;
|
end Is_Greater_Element_Node;
|
end Is_Greater_Element_Node;
|
|
|
--------------------------
|
--------------------------
|
-- Is_Less_Element_Node --
|
-- Is_Less_Element_Node --
|
--------------------------
|
--------------------------
|
|
|
function Is_Less_Element_Node
|
function Is_Less_Element_Node
|
(Left : Element_Type;
|
(Left : Element_Type;
|
Right : Node_Access) return Boolean
|
Right : Node_Access) return Boolean
|
is
|
is
|
begin
|
begin
|
return Left < Right.Element;
|
return Left < Right.Element;
|
end Is_Less_Element_Node;
|
end Is_Less_Element_Node;
|
|
|
-----------------------
|
-----------------------
|
-- Is_Less_Node_Node --
|
-- Is_Less_Node_Node --
|
-----------------------
|
-----------------------
|
|
|
function Is_Less_Node_Node (L, R : Node_Access) return Boolean is
|
function Is_Less_Node_Node (L, R : Node_Access) return Boolean is
|
begin
|
begin
|
return L.Element < R.Element;
|
return L.Element < R.Element;
|
end Is_Less_Node_Node;
|
end Is_Less_Node_Node;
|
|
|
---------------
|
---------------
|
-- Is_Subset --
|
-- Is_Subset --
|
---------------
|
---------------
|
|
|
function Is_Subset (Subset : Set; Of_Set : Set) return Boolean is
|
function Is_Subset (Subset : Set; Of_Set : Set) return Boolean is
|
begin
|
begin
|
return Set_Ops.Is_Subset (Subset => Subset.Tree, Of_Set => Of_Set.Tree);
|
return Set_Ops.Is_Subset (Subset => Subset.Tree, Of_Set => Of_Set.Tree);
|
end Is_Subset;
|
end Is_Subset;
|
|
|
-------------
|
-------------
|
-- Iterate --
|
-- Iterate --
|
-------------
|
-------------
|
|
|
procedure Iterate
|
procedure Iterate
|
(Container : Set;
|
(Container : Set;
|
Process : not null access procedure (Position : Cursor))
|
Process : not null access procedure (Position : Cursor))
|
is
|
is
|
procedure Process_Node (Node : Node_Access);
|
procedure Process_Node (Node : Node_Access);
|
pragma Inline (Process_Node);
|
pragma Inline (Process_Node);
|
|
|
procedure Local_Iterate is
|
procedure Local_Iterate is
|
new Tree_Operations.Generic_Iteration (Process_Node);
|
new Tree_Operations.Generic_Iteration (Process_Node);
|
|
|
------------------
|
------------------
|
-- Process_Node --
|
-- Process_Node --
|
------------------
|
------------------
|
|
|
procedure Process_Node (Node : Node_Access) is
|
procedure Process_Node (Node : Node_Access) is
|
begin
|
begin
|
Process (Cursor'(Container'Unrestricted_Access, Node));
|
Process (Cursor'(Container'Unrestricted_Access, Node));
|
end Process_Node;
|
end Process_Node;
|
|
|
T : Tree_Type renames Container.Tree'Unrestricted_Access.all;
|
T : Tree_Type renames Container.Tree'Unrestricted_Access.all;
|
B : Natural renames T.Busy;
|
B : Natural renames T.Busy;
|
|
|
-- Start of processing for Iterate
|
-- Start of processing for Iterate
|
|
|
begin
|
begin
|
B := B + 1;
|
B := B + 1;
|
|
|
begin
|
begin
|
Local_Iterate (T);
|
Local_Iterate (T);
|
exception
|
exception
|
when others =>
|
when others =>
|
B := B - 1;
|
B := B - 1;
|
raise;
|
raise;
|
end;
|
end;
|
|
|
B := B - 1;
|
B := B - 1;
|
end Iterate;
|
end Iterate;
|
|
|
procedure Iterate
|
procedure Iterate
|
(Container : Set;
|
(Container : Set;
|
Item : Element_Type;
|
Item : Element_Type;
|
Process : not null access procedure (Position : Cursor))
|
Process : not null access procedure (Position : Cursor))
|
is
|
is
|
procedure Process_Node (Node : Node_Access);
|
procedure Process_Node (Node : Node_Access);
|
pragma Inline (Process_Node);
|
pragma Inline (Process_Node);
|
|
|
procedure Local_Iterate is
|
procedure Local_Iterate is
|
new Element_Keys.Generic_Iteration (Process_Node);
|
new Element_Keys.Generic_Iteration (Process_Node);
|
|
|
------------------
|
------------------
|
-- Process_Node --
|
-- Process_Node --
|
------------------
|
------------------
|
|
|
procedure Process_Node (Node : Node_Access) is
|
procedure Process_Node (Node : Node_Access) is
|
begin
|
begin
|
Process (Cursor'(Container'Unrestricted_Access, Node));
|
Process (Cursor'(Container'Unrestricted_Access, Node));
|
end Process_Node;
|
end Process_Node;
|
|
|
T : Tree_Type renames Container.Tree'Unrestricted_Access.all;
|
T : Tree_Type renames Container.Tree'Unrestricted_Access.all;
|
B : Natural renames T.Busy;
|
B : Natural renames T.Busy;
|
|
|
-- Start of processing for Iterate
|
-- Start of processing for Iterate
|
|
|
begin
|
begin
|
B := B + 1;
|
B := B + 1;
|
|
|
begin
|
begin
|
Local_Iterate (T, Item);
|
Local_Iterate (T, Item);
|
exception
|
exception
|
when others =>
|
when others =>
|
B := B - 1;
|
B := B - 1;
|
raise;
|
raise;
|
end;
|
end;
|
|
|
B := B - 1;
|
B := B - 1;
|
end Iterate;
|
end Iterate;
|
|
|
----------
|
----------
|
-- Last --
|
-- Last --
|
----------
|
----------
|
|
|
function Last (Container : Set) return Cursor is
|
function Last (Container : Set) return Cursor is
|
begin
|
begin
|
if Container.Tree.Last = null then
|
if Container.Tree.Last = null then
|
return No_Element;
|
return No_Element;
|
end if;
|
end if;
|
|
|
return Cursor'(Container'Unrestricted_Access, Container.Tree.Last);
|
return Cursor'(Container'Unrestricted_Access, Container.Tree.Last);
|
end Last;
|
end Last;
|
|
|
------------------
|
------------------
|
-- Last_Element --
|
-- Last_Element --
|
------------------
|
------------------
|
|
|
function Last_Element (Container : Set) return Element_Type is
|
function Last_Element (Container : Set) return Element_Type is
|
begin
|
begin
|
if Container.Tree.Last = null then
|
if Container.Tree.Last = null then
|
raise Constraint_Error with "set is empty";
|
raise Constraint_Error with "set is empty";
|
end if;
|
end if;
|
|
|
return Container.Tree.Last.Element;
|
return Container.Tree.Last.Element;
|
end Last_Element;
|
end Last_Element;
|
|
|
----------
|
----------
|
-- Left --
|
-- Left --
|
----------
|
----------
|
|
|
function Left (Node : Node_Access) return Node_Access is
|
function Left (Node : Node_Access) return Node_Access is
|
begin
|
begin
|
return Node.Left;
|
return Node.Left;
|
end Left;
|
end Left;
|
|
|
------------
|
------------
|
-- Length --
|
-- Length --
|
------------
|
------------
|
|
|
function Length (Container : Set) return Count_Type is
|
function Length (Container : Set) return Count_Type is
|
begin
|
begin
|
return Container.Tree.Length;
|
return Container.Tree.Length;
|
end Length;
|
end Length;
|
|
|
----------
|
----------
|
-- Move --
|
-- Move --
|
----------
|
----------
|
|
|
procedure Move is
|
procedure Move is
|
new Tree_Operations.Generic_Move (Clear);
|
new Tree_Operations.Generic_Move (Clear);
|
|
|
procedure Move (Target : in out Set; Source : in out Set) is
|
procedure Move (Target : in out Set; Source : in out Set) is
|
begin
|
begin
|
Move (Target => Target.Tree, Source => Source.Tree);
|
Move (Target => Target.Tree, Source => Source.Tree);
|
end Move;
|
end Move;
|
|
|
----------
|
----------
|
-- Next --
|
-- Next --
|
----------
|
----------
|
|
|
procedure Next (Position : in out Cursor)
|
procedure Next (Position : in out Cursor)
|
is
|
is
|
begin
|
begin
|
Position := Next (Position);
|
Position := Next (Position);
|
end Next;
|
end Next;
|
|
|
function Next (Position : Cursor) return Cursor is
|
function Next (Position : Cursor) return Cursor is
|
begin
|
begin
|
if Position = No_Element then
|
if Position = No_Element then
|
return No_Element;
|
return No_Element;
|
end if;
|
end if;
|
|
|
pragma Assert (Vet (Position.Container.Tree, Position.Node),
|
pragma Assert (Vet (Position.Container.Tree, Position.Node),
|
"bad cursor in Next");
|
"bad cursor in Next");
|
|
|
declare
|
declare
|
Node : constant Node_Access :=
|
Node : constant Node_Access :=
|
Tree_Operations.Next (Position.Node);
|
Tree_Operations.Next (Position.Node);
|
begin
|
begin
|
if Node = null then
|
if Node = null then
|
return No_Element;
|
return No_Element;
|
end if;
|
end if;
|
|
|
return Cursor'(Position.Container, Node);
|
return Cursor'(Position.Container, Node);
|
end;
|
end;
|
end Next;
|
end Next;
|
|
|
-------------
|
-------------
|
-- Overlap --
|
-- Overlap --
|
-------------
|
-------------
|
|
|
function Overlap (Left, Right : Set) return Boolean is
|
function Overlap (Left, Right : Set) return Boolean is
|
begin
|
begin
|
return Set_Ops.Overlap (Left.Tree, Right.Tree);
|
return Set_Ops.Overlap (Left.Tree, Right.Tree);
|
end Overlap;
|
end Overlap;
|
|
|
------------
|
------------
|
-- Parent --
|
-- Parent --
|
------------
|
------------
|
|
|
function Parent (Node : Node_Access) return Node_Access is
|
function Parent (Node : Node_Access) return Node_Access is
|
begin
|
begin
|
return Node.Parent;
|
return Node.Parent;
|
end Parent;
|
end Parent;
|
|
|
--------------
|
--------------
|
-- Previous --
|
-- Previous --
|
--------------
|
--------------
|
|
|
procedure Previous (Position : in out Cursor)
|
procedure Previous (Position : in out Cursor)
|
is
|
is
|
begin
|
begin
|
Position := Previous (Position);
|
Position := Previous (Position);
|
end Previous;
|
end Previous;
|
|
|
function Previous (Position : Cursor) return Cursor is
|
function Previous (Position : Cursor) return Cursor is
|
begin
|
begin
|
if Position = No_Element then
|
if Position = No_Element then
|
return No_Element;
|
return No_Element;
|
end if;
|
end if;
|
|
|
pragma Assert (Vet (Position.Container.Tree, Position.Node),
|
pragma Assert (Vet (Position.Container.Tree, Position.Node),
|
"bad cursor in Previous");
|
"bad cursor in Previous");
|
|
|
declare
|
declare
|
Node : constant Node_Access :=
|
Node : constant Node_Access :=
|
Tree_Operations.Previous (Position.Node);
|
Tree_Operations.Previous (Position.Node);
|
begin
|
begin
|
if Node = null then
|
if Node = null then
|
return No_Element;
|
return No_Element;
|
end if;
|
end if;
|
|
|
return Cursor'(Position.Container, Node);
|
return Cursor'(Position.Container, Node);
|
end;
|
end;
|
end Previous;
|
end Previous;
|
|
|
-------------------
|
-------------------
|
-- Query_Element --
|
-- Query_Element --
|
-------------------
|
-------------------
|
|
|
procedure Query_Element
|
procedure Query_Element
|
(Position : Cursor;
|
(Position : Cursor;
|
Process : not null access procedure (Element : Element_Type))
|
Process : not null access procedure (Element : Element_Type))
|
is
|
is
|
begin
|
begin
|
if Position.Node = null then
|
if Position.Node = null then
|
raise Constraint_Error with "Position cursor equals No_Element";
|
raise Constraint_Error with "Position cursor equals No_Element";
|
end if;
|
end if;
|
|
|
pragma Assert (Vet (Position.Container.Tree, Position.Node),
|
pragma Assert (Vet (Position.Container.Tree, Position.Node),
|
"bad cursor in Query_Element");
|
"bad cursor in Query_Element");
|
|
|
declare
|
declare
|
T : Tree_Type renames Position.Container.Tree;
|
T : Tree_Type renames Position.Container.Tree;
|
|
|
B : Natural renames T.Busy;
|
B : Natural renames T.Busy;
|
L : Natural renames T.Lock;
|
L : Natural renames T.Lock;
|
|
|
begin
|
begin
|
B := B + 1;
|
B := B + 1;
|
L := L + 1;
|
L := L + 1;
|
|
|
begin
|
begin
|
Process (Position.Node.Element);
|
Process (Position.Node.Element);
|
exception
|
exception
|
when others =>
|
when others =>
|
L := L - 1;
|
L := L - 1;
|
B := B - 1;
|
B := B - 1;
|
raise;
|
raise;
|
end;
|
end;
|
|
|
L := L - 1;
|
L := L - 1;
|
B := B - 1;
|
B := B - 1;
|
end;
|
end;
|
end Query_Element;
|
end Query_Element;
|
|
|
----------
|
----------
|
-- Read --
|
-- Read --
|
----------
|
----------
|
|
|
procedure Read
|
procedure Read
|
(Stream : not null access Root_Stream_Type'Class;
|
(Stream : not null access Root_Stream_Type'Class;
|
Container : out Set)
|
Container : out Set)
|
is
|
is
|
function Read_Node
|
function Read_Node
|
(Stream : not null access Root_Stream_Type'Class) return Node_Access;
|
(Stream : not null access Root_Stream_Type'Class) return Node_Access;
|
pragma Inline (Read_Node);
|
pragma Inline (Read_Node);
|
|
|
procedure Read is
|
procedure Read is
|
new Tree_Operations.Generic_Read (Clear, Read_Node);
|
new Tree_Operations.Generic_Read (Clear, Read_Node);
|
|
|
---------------
|
---------------
|
-- Read_Node --
|
-- Read_Node --
|
---------------
|
---------------
|
|
|
function Read_Node
|
function Read_Node
|
(Stream : not null access Root_Stream_Type'Class) return Node_Access
|
(Stream : not null access Root_Stream_Type'Class) return Node_Access
|
is
|
is
|
Node : Node_Access := new Node_Type;
|
Node : Node_Access := new Node_Type;
|
begin
|
begin
|
Element_Type'Read (Stream, Node.Element);
|
Element_Type'Read (Stream, Node.Element);
|
return Node;
|
return Node;
|
exception
|
exception
|
when others =>
|
when others =>
|
Free (Node); -- Note that Free deallocates elem too
|
Free (Node); -- Note that Free deallocates elem too
|
raise;
|
raise;
|
end Read_Node;
|
end Read_Node;
|
|
|
-- Start of processing for Read
|
-- Start of processing for Read
|
|
|
begin
|
begin
|
Read (Stream, Container.Tree);
|
Read (Stream, Container.Tree);
|
end Read;
|
end Read;
|
|
|
procedure Read
|
procedure Read
|
(Stream : not null access Root_Stream_Type'Class;
|
(Stream : not null access Root_Stream_Type'Class;
|
Item : out Cursor)
|
Item : out Cursor)
|
is
|
is
|
begin
|
begin
|
raise Program_Error with "attempt to stream set cursor";
|
raise Program_Error with "attempt to stream set cursor";
|
end Read;
|
end Read;
|
|
|
---------------------
|
---------------------
|
-- Replace_Element --
|
-- Replace_Element --
|
---------------------
|
---------------------
|
|
|
procedure Replace_Element
|
procedure Replace_Element
|
(Tree : in out Tree_Type;
|
(Tree : in out Tree_Type;
|
Node : Node_Access;
|
Node : Node_Access;
|
Item : Element_Type)
|
Item : Element_Type)
|
is
|
is
|
begin
|
begin
|
if Item < Node.Element
|
if Item < Node.Element
|
or else Node.Element < Item
|
or else Node.Element < Item
|
then
|
then
|
null;
|
null;
|
else
|
else
|
if Tree.Lock > 0 then
|
if Tree.Lock > 0 then
|
raise Program_Error with
|
raise Program_Error with
|
"attempt to tamper with cursors (set is locked)";
|
"attempt to tamper with cursors (set is locked)";
|
end if;
|
end if;
|
|
|
Node.Element := Item;
|
Node.Element := Item;
|
return;
|
return;
|
end if;
|
end if;
|
|
|
Tree_Operations.Delete_Node_Sans_Free (Tree, Node); -- Checks busy-bit
|
Tree_Operations.Delete_Node_Sans_Free (Tree, Node); -- Checks busy-bit
|
|
|
Insert_New_Item : declare
|
Insert_New_Item : declare
|
function New_Node return Node_Access;
|
function New_Node return Node_Access;
|
pragma Inline (New_Node);
|
pragma Inline (New_Node);
|
|
|
procedure Insert_Post is
|
procedure Insert_Post is
|
new Element_Keys.Generic_Insert_Post (New_Node);
|
new Element_Keys.Generic_Insert_Post (New_Node);
|
|
|
procedure Unconditional_Insert is
|
procedure Unconditional_Insert is
|
new Element_Keys.Generic_Unconditional_Insert (Insert_Post);
|
new Element_Keys.Generic_Unconditional_Insert (Insert_Post);
|
|
|
--------------
|
--------------
|
-- New_Node --
|
-- New_Node --
|
--------------
|
--------------
|
|
|
function New_Node return Node_Access is
|
function New_Node return Node_Access is
|
begin
|
begin
|
Node.Element := Item;
|
Node.Element := Item;
|
Node.Color := Red_Black_Trees.Red;
|
Node.Color := Red_Black_Trees.Red;
|
Node.Parent := null;
|
Node.Parent := null;
|
Node.Left := null;
|
Node.Left := null;
|
Node.Right := null;
|
Node.Right := null;
|
|
|
return Node;
|
return Node;
|
end New_Node;
|
end New_Node;
|
|
|
Result : Node_Access;
|
Result : Node_Access;
|
|
|
-- Start of processing for Insert_New_Item
|
-- Start of processing for Insert_New_Item
|
|
|
begin
|
begin
|
Unconditional_Insert
|
Unconditional_Insert
|
(Tree => Tree,
|
(Tree => Tree,
|
Key => Item,
|
Key => Item,
|
Node => Result);
|
Node => Result);
|
|
|
pragma Assert (Result = Node);
|
pragma Assert (Result = Node);
|
end Insert_New_Item;
|
end Insert_New_Item;
|
end Replace_Element;
|
end Replace_Element;
|
|
|
procedure Replace_Element
|
procedure Replace_Element
|
(Container : in out Set;
|
(Container : in out Set;
|
Position : Cursor;
|
Position : Cursor;
|
New_Item : Element_Type)
|
New_Item : Element_Type)
|
is
|
is
|
begin
|
begin
|
if Position.Node = null then
|
if Position.Node = null then
|
raise Constraint_Error with
|
raise Constraint_Error with
|
"Position cursor equals No_Element";
|
"Position cursor equals No_Element";
|
end if;
|
end if;
|
|
|
if Position.Container /= Container'Unrestricted_Access then
|
if Position.Container /= Container'Unrestricted_Access then
|
raise Program_Error with
|
raise Program_Error with
|
"Position cursor designates wrong set";
|
"Position cursor designates wrong set";
|
end if;
|
end if;
|
|
|
pragma Assert (Vet (Container.Tree, Position.Node),
|
pragma Assert (Vet (Container.Tree, Position.Node),
|
"bad cursor in Replace_Element");
|
"bad cursor in Replace_Element");
|
|
|
Replace_Element (Container.Tree, Position.Node, New_Item);
|
Replace_Element (Container.Tree, Position.Node, New_Item);
|
end Replace_Element;
|
end Replace_Element;
|
|
|
---------------------
|
---------------------
|
-- Reverse_Iterate --
|
-- Reverse_Iterate --
|
---------------------
|
---------------------
|
|
|
procedure Reverse_Iterate
|
procedure Reverse_Iterate
|
(Container : Set;
|
(Container : Set;
|
Process : not null access procedure (Position : Cursor))
|
Process : not null access procedure (Position : Cursor))
|
is
|
is
|
procedure Process_Node (Node : Node_Access);
|
procedure Process_Node (Node : Node_Access);
|
pragma Inline (Process_Node);
|
pragma Inline (Process_Node);
|
|
|
procedure Local_Reverse_Iterate is
|
procedure Local_Reverse_Iterate is
|
new Tree_Operations.Generic_Reverse_Iteration (Process_Node);
|
new Tree_Operations.Generic_Reverse_Iteration (Process_Node);
|
|
|
------------------
|
------------------
|
-- Process_Node --
|
-- Process_Node --
|
------------------
|
------------------
|
|
|
procedure Process_Node (Node : Node_Access) is
|
procedure Process_Node (Node : Node_Access) is
|
begin
|
begin
|
Process (Cursor'(Container'Unrestricted_Access, Node));
|
Process (Cursor'(Container'Unrestricted_Access, Node));
|
end Process_Node;
|
end Process_Node;
|
|
|
T : Tree_Type renames Container.Tree'Unrestricted_Access.all;
|
T : Tree_Type renames Container.Tree'Unrestricted_Access.all;
|
B : Natural renames T.Busy;
|
B : Natural renames T.Busy;
|
|
|
-- Start of processing for Reverse_Iterate
|
-- Start of processing for Reverse_Iterate
|
|
|
begin
|
begin
|
B := B + 1;
|
B := B + 1;
|
|
|
begin
|
begin
|
Local_Reverse_Iterate (T);
|
Local_Reverse_Iterate (T);
|
exception
|
exception
|
when others =>
|
when others =>
|
B := B - 1;
|
B := B - 1;
|
raise;
|
raise;
|
end;
|
end;
|
|
|
B := B - 1;
|
B := B - 1;
|
end Reverse_Iterate;
|
end Reverse_Iterate;
|
|
|
procedure Reverse_Iterate
|
procedure Reverse_Iterate
|
(Container : Set;
|
(Container : Set;
|
Item : Element_Type;
|
Item : Element_Type;
|
Process : not null access procedure (Position : Cursor))
|
Process : not null access procedure (Position : Cursor))
|
is
|
is
|
procedure Process_Node (Node : Node_Access);
|
procedure Process_Node (Node : Node_Access);
|
pragma Inline (Process_Node);
|
pragma Inline (Process_Node);
|
|
|
procedure Local_Reverse_Iterate is
|
procedure Local_Reverse_Iterate is
|
new Element_Keys.Generic_Reverse_Iteration (Process_Node);
|
new Element_Keys.Generic_Reverse_Iteration (Process_Node);
|
|
|
------------------
|
------------------
|
-- Process_Node --
|
-- Process_Node --
|
------------------
|
------------------
|
|
|
procedure Process_Node (Node : Node_Access) is
|
procedure Process_Node (Node : Node_Access) is
|
begin
|
begin
|
Process (Cursor'(Container'Unrestricted_Access, Node));
|
Process (Cursor'(Container'Unrestricted_Access, Node));
|
end Process_Node;
|
end Process_Node;
|
|
|
T : Tree_Type renames Container.Tree'Unrestricted_Access.all;
|
T : Tree_Type renames Container.Tree'Unrestricted_Access.all;
|
B : Natural renames T.Busy;
|
B : Natural renames T.Busy;
|
|
|
-- Start of processing for Reverse_Iterate
|
-- Start of processing for Reverse_Iterate
|
|
|
begin
|
begin
|
B := B + 1;
|
B := B + 1;
|
|
|
begin
|
begin
|
Local_Reverse_Iterate (T, Item);
|
Local_Reverse_Iterate (T, Item);
|
exception
|
exception
|
when others =>
|
when others =>
|
B := B - 1;
|
B := B - 1;
|
raise;
|
raise;
|
end;
|
end;
|
|
|
B := B - 1;
|
B := B - 1;
|
end Reverse_Iterate;
|
end Reverse_Iterate;
|
|
|
-----------
|
-----------
|
-- Right --
|
-- Right --
|
-----------
|
-----------
|
|
|
function Right (Node : Node_Access) return Node_Access is
|
function Right (Node : Node_Access) return Node_Access is
|
begin
|
begin
|
return Node.Right;
|
return Node.Right;
|
end Right;
|
end Right;
|
|
|
---------------
|
---------------
|
-- Set_Color --
|
-- Set_Color --
|
---------------
|
---------------
|
|
|
procedure Set_Color (Node : Node_Access; Color : Color_Type) is
|
procedure Set_Color (Node : Node_Access; Color : Color_Type) is
|
begin
|
begin
|
Node.Color := Color;
|
Node.Color := Color;
|
end Set_Color;
|
end Set_Color;
|
|
|
--------------
|
--------------
|
-- Set_Left --
|
-- Set_Left --
|
--------------
|
--------------
|
|
|
procedure Set_Left (Node : Node_Access; Left : Node_Access) is
|
procedure Set_Left (Node : Node_Access; Left : Node_Access) is
|
begin
|
begin
|
Node.Left := Left;
|
Node.Left := Left;
|
end Set_Left;
|
end Set_Left;
|
|
|
----------------
|
----------------
|
-- Set_Parent --
|
-- Set_Parent --
|
----------------
|
----------------
|
|
|
procedure Set_Parent (Node : Node_Access; Parent : Node_Access) is
|
procedure Set_Parent (Node : Node_Access; Parent : Node_Access) is
|
begin
|
begin
|
Node.Parent := Parent;
|
Node.Parent := Parent;
|
end Set_Parent;
|
end Set_Parent;
|
|
|
---------------
|
---------------
|
-- Set_Right --
|
-- Set_Right --
|
---------------
|
---------------
|
|
|
procedure Set_Right (Node : Node_Access; Right : Node_Access) is
|
procedure Set_Right (Node : Node_Access; Right : Node_Access) is
|
begin
|
begin
|
Node.Right := Right;
|
Node.Right := Right;
|
end Set_Right;
|
end Set_Right;
|
|
|
--------------------------
|
--------------------------
|
-- Symmetric_Difference --
|
-- Symmetric_Difference --
|
--------------------------
|
--------------------------
|
|
|
procedure Symmetric_Difference (Target : in out Set; Source : Set) is
|
procedure Symmetric_Difference (Target : in out Set; Source : Set) is
|
begin
|
begin
|
Set_Ops.Symmetric_Difference (Target.Tree, Source.Tree);
|
Set_Ops.Symmetric_Difference (Target.Tree, Source.Tree);
|
end Symmetric_Difference;
|
end Symmetric_Difference;
|
|
|
function Symmetric_Difference (Left, Right : Set) return Set is
|
function Symmetric_Difference (Left, Right : Set) return Set is
|
Tree : constant Tree_Type :=
|
Tree : constant Tree_Type :=
|
Set_Ops.Symmetric_Difference (Left.Tree, Right.Tree);
|
Set_Ops.Symmetric_Difference (Left.Tree, Right.Tree);
|
begin
|
begin
|
return Set'(Controlled with Tree);
|
return Set'(Controlled with Tree);
|
end Symmetric_Difference;
|
end Symmetric_Difference;
|
|
|
------------
|
------------
|
-- To_Set --
|
-- To_Set --
|
------------
|
------------
|
|
|
function To_Set (New_Item : Element_Type) return Set is
|
function To_Set (New_Item : Element_Type) return Set is
|
Tree : Tree_Type;
|
Tree : Tree_Type;
|
Node : Node_Access;
|
Node : Node_Access;
|
pragma Unreferenced (Node);
|
pragma Unreferenced (Node);
|
begin
|
begin
|
Insert_Sans_Hint (Tree, New_Item, Node);
|
Insert_Sans_Hint (Tree, New_Item, Node);
|
return Set'(Controlled with Tree);
|
return Set'(Controlled with Tree);
|
end To_Set;
|
end To_Set;
|
|
|
-----------
|
-----------
|
-- Union --
|
-- Union --
|
-----------
|
-----------
|
|
|
procedure Union (Target : in out Set; Source : Set) is
|
procedure Union (Target : in out Set; Source : Set) is
|
begin
|
begin
|
Set_Ops.Union (Target.Tree, Source.Tree);
|
Set_Ops.Union (Target.Tree, Source.Tree);
|
end Union;
|
end Union;
|
|
|
function Union (Left, Right : Set) return Set is
|
function Union (Left, Right : Set) return Set is
|
Tree : constant Tree_Type :=
|
Tree : constant Tree_Type :=
|
Set_Ops.Union (Left.Tree, Right.Tree);
|
Set_Ops.Union (Left.Tree, Right.Tree);
|
begin
|
begin
|
return Set'(Controlled with Tree);
|
return Set'(Controlled with Tree);
|
end Union;
|
end Union;
|
|
|
-----------
|
-----------
|
-- Write --
|
-- Write --
|
-----------
|
-----------
|
|
|
procedure Write
|
procedure Write
|
(Stream : not null access Root_Stream_Type'Class;
|
(Stream : not null access Root_Stream_Type'Class;
|
Container : Set)
|
Container : Set)
|
is
|
is
|
procedure Write_Node
|
procedure Write_Node
|
(Stream : not null access Root_Stream_Type'Class;
|
(Stream : not null access Root_Stream_Type'Class;
|
Node : Node_Access);
|
Node : Node_Access);
|
pragma Inline (Write_Node);
|
pragma Inline (Write_Node);
|
|
|
procedure Write is
|
procedure Write is
|
new Tree_Operations.Generic_Write (Write_Node);
|
new Tree_Operations.Generic_Write (Write_Node);
|
|
|
----------------
|
----------------
|
-- Write_Node --
|
-- Write_Node --
|
----------------
|
----------------
|
|
|
procedure Write_Node
|
procedure Write_Node
|
(Stream : not null access Root_Stream_Type'Class;
|
(Stream : not null access Root_Stream_Type'Class;
|
Node : Node_Access)
|
Node : Node_Access)
|
is
|
is
|
begin
|
begin
|
Element_Type'Write (Stream, Node.Element);
|
Element_Type'Write (Stream, Node.Element);
|
end Write_Node;
|
end Write_Node;
|
|
|
-- Start of processing for Write
|
-- Start of processing for Write
|
|
|
begin
|
begin
|
Write (Stream, Container.Tree);
|
Write (Stream, Container.Tree);
|
end Write;
|
end Write;
|
|
|
procedure Write
|
procedure Write
|
(Stream : not null access Root_Stream_Type'Class;
|
(Stream : not null access Root_Stream_Type'Class;
|
Item : Cursor)
|
Item : Cursor)
|
is
|
is
|
begin
|
begin
|
raise Program_Error with "attempt to stream set cursor";
|
raise Program_Error with "attempt to stream set cursor";
|
end Write;
|
end Write;
|
|
|
end Ada.Containers.Ordered_Multisets;
|
end Ada.Containers.Ordered_Multisets;
|
|
|