| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT LIBRARY COMPONENTS -- |
| -- -- |
| -- A D A . C O N T A I N E R S . F O R M A L _ O R D E R E D _ M A P S -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- Copyright (C) 2010-2012, 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 3, 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. -- |
| -- -- |
| -- As a special exception under Section 7 of GPL version 3, you are granted -- |
| -- additional permissions described in the GCC Runtime Library Exception, -- |
| -- version 3.1, as published by the Free Software Foundation. -- |
| -- -- |
| -- 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; -- |
| -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- |
| -- <http://www.gnu.org/licenses/>. -- |
| ------------------------------------------------------------------------------ |
| |
| with Ada.Containers.Red_Black_Trees.Generic_Bounded_Operations; |
| pragma Elaborate_All |
| (Ada.Containers.Red_Black_Trees.Generic_Bounded_Operations); |
| |
| with Ada.Containers.Red_Black_Trees.Generic_Bounded_Keys; |
| pragma Elaborate_All (Ada.Containers.Red_Black_Trees.Generic_Bounded_Keys); |
| |
| with System; use type System.Address; |
| |
| package body Ada.Containers.Formal_Ordered_Maps is |
| |
| ----------------------------- |
| -- Node Access Subprograms -- |
| ----------------------------- |
| |
| -- These subprograms provide a functional interface to access fields |
| -- of a node, and a procedural interface for modifying these values. |
| |
| function Color |
| (Node : Node_Type) return Ada.Containers.Red_Black_Trees.Color_Type; |
| pragma Inline (Color); |
| |
| function Left_Son (Node : Node_Type) return Count_Type; |
| pragma Inline (Left); |
| |
| function Parent (Node : Node_Type) return Count_Type; |
| pragma Inline (Parent); |
| |
| function Right_Son (Node : Node_Type) return Count_Type; |
| pragma Inline (Right); |
| |
| procedure Set_Color |
| (Node : in out Node_Type; |
| Color : Ada.Containers.Red_Black_Trees.Color_Type); |
| pragma Inline (Set_Color); |
| |
| procedure Set_Left (Node : in out Node_Type; Left : Count_Type); |
| pragma Inline (Set_Left); |
| |
| procedure Set_Right (Node : in out Node_Type; Right : Count_Type); |
| pragma Inline (Set_Right); |
| |
| procedure Set_Parent (Node : in out Node_Type; Parent : Count_Type); |
| pragma Inline (Set_Parent); |
| |
| ----------------------- |
| -- Local Subprograms -- |
| ----------------------- |
| |
| -- All need comments ??? |
| |
| generic |
| with procedure Set_Element (Node : in out Node_Type); |
| procedure Generic_Allocate |
| (Tree : in out Tree_Types.Tree_Type'Class; |
| Node : out Count_Type); |
| |
| procedure Free (Tree : in out Map; X : Count_Type); |
| |
| function Is_Greater_Key_Node |
| (Left : Key_Type; |
| Right : Node_Type) return Boolean; |
| pragma Inline (Is_Greater_Key_Node); |
| |
| function Is_Less_Key_Node |
| (Left : Key_Type; |
| Right : Node_Type) return Boolean; |
| pragma Inline (Is_Less_Key_Node); |
| |
| -------------------------- |
| -- Local Instantiations -- |
| -------------------------- |
| |
| package Tree_Operations is |
| new Red_Black_Trees.Generic_Bounded_Operations |
| (Tree_Types => Tree_Types, |
| Left => Left_Son, |
| Right => Right_Son); |
| |
| use Tree_Operations; |
| |
| package Key_Ops is |
| new Red_Black_Trees.Generic_Bounded_Keys |
| (Tree_Operations => Tree_Operations, |
| Key_Type => Key_Type, |
| Is_Less_Key_Node => Is_Less_Key_Node, |
| Is_Greater_Key_Node => Is_Greater_Key_Node); |
| |
| --------- |
| -- "=" -- |
| --------- |
| |
| function "=" (Left, Right : Map) return Boolean is |
| Lst : Count_Type; |
| Node : Count_Type; |
| ENode : Count_Type; |
| |
| begin |
| if Length (Left) /= Length (Right) then |
| return False; |
| end if; |
| |
| if Is_Empty (Left) then |
| return True; |
| end if; |
| |
| Lst := Next (Left, Last (Left).Node); |
| |
| Node := First (Left).Node; |
| while Node /= Lst loop |
| ENode := Find (Right, Left.Nodes (Node).Key).Node; |
| |
| if ENode = 0 or else |
| Left.Nodes (Node).Element /= Right.Nodes (ENode).Element |
| then |
| return False; |
| end if; |
| |
| Node := Next (Left, Node); |
| end loop; |
| |
| return True; |
| end "="; |
| |
| ------------ |
| -- Assign -- |
| ------------ |
| |
| procedure Assign (Target : in out Map; Source : Map) is |
| procedure Append_Element (Source_Node : Count_Type); |
| |
| procedure Append_Elements is |
| new Tree_Operations.Generic_Iteration (Append_Element); |
| |
| -------------------- |
| -- Append_Element -- |
| -------------------- |
| |
| procedure Append_Element (Source_Node : Count_Type) is |
| SN : Node_Type renames Source.Nodes (Source_Node); |
| |
| procedure Set_Element (Node : in out Node_Type); |
| pragma Inline (Set_Element); |
| |
| function New_Node return Count_Type; |
| pragma Inline (New_Node); |
| |
| procedure Insert_Post is new Key_Ops.Generic_Insert_Post (New_Node); |
| |
| procedure Unconditional_Insert_Sans_Hint is |
| new Key_Ops.Generic_Unconditional_Insert (Insert_Post); |
| |
| procedure Unconditional_Insert_Avec_Hint is |
| new Key_Ops.Generic_Unconditional_Insert_With_Hint |
| (Insert_Post, |
| Unconditional_Insert_Sans_Hint); |
| |
| procedure Allocate is new Generic_Allocate (Set_Element); |
| |
| -------------- |
| -- New_Node -- |
| -------------- |
| |
| function New_Node return Count_Type is |
| Result : Count_Type; |
| begin |
| Allocate (Target, Result); |
| return Result; |
| end New_Node; |
| |
| ----------------- |
| -- Set_Element -- |
| ----------------- |
| |
| procedure Set_Element (Node : in out Node_Type) is |
| begin |
| Node.Key := SN.Key; |
| Node.Element := SN.Element; |
| end Set_Element; |
| |
| Target_Node : Count_Type; |
| |
| -- Start of processing for Append_Element |
| |
| begin |
| Unconditional_Insert_Avec_Hint |
| (Tree => Target, |
| Hint => 0, |
| Key => SN.Key, |
| Node => Target_Node); |
| end Append_Element; |
| |
| -- Start of processing for Assign |
| |
| begin |
| if Target'Address = Source'Address then |
| return; |
| end if; |
| |
| if Target.Capacity < Length (Source) then |
| raise Storage_Error with "not enough capacity"; -- SE or CE? ??? |
| end if; |
| |
| Tree_Operations.Clear_Tree (Target); |
| Append_Elements (Source); |
| end Assign; |
| |
| ------------- |
| -- Ceiling -- |
| ------------- |
| |
| function Ceiling (Container : Map; Key : Key_Type) return Cursor is |
| Node : constant Count_Type := Key_Ops.Ceiling (Container, Key); |
| |
| begin |
| if Node = 0 then |
| return No_Element; |
| end if; |
| |
| return (Node => Node); |
| end Ceiling; |
| |
| ----------- |
| -- Clear -- |
| ----------- |
| |
| procedure Clear (Container : in out Map) is |
| begin |
| Tree_Operations.Clear_Tree (Container); |
| end Clear; |
| |
| ----------- |
| -- Color -- |
| ----------- |
| |
| function Color (Node : Node_Type) return Color_Type is |
| begin |
| return Node.Color; |
| end Color; |
| |
| -------------- |
| -- Contains -- |
| -------------- |
| |
| function Contains (Container : Map; Key : Key_Type) return Boolean is |
| begin |
| return Find (Container, Key) /= No_Element; |
| end Contains; |
| |
| ---------- |
| -- Copy -- |
| ---------- |
| |
| function Copy (Source : Map; Capacity : Count_Type := 0) return Map is |
| Node : Count_Type := 1; |
| N : Count_Type; |
| |
| begin |
| return Target : Map (Count_Type'Max (Source.Capacity, Capacity)) do |
| if Length (Source) > 0 then |
| Target.Length := Source.Length; |
| Target.Root := Source.Root; |
| Target.First := Source.First; |
| Target.Last := Source.Last; |
| Target.Free := Source.Free; |
| |
| while Node <= Source.Capacity loop |
| Target.Nodes (Node).Element := |
| Source.Nodes (Node).Element; |
| Target.Nodes (Node).Key := |
| Source.Nodes (Node).Key; |
| Target.Nodes (Node).Parent := |
| Source.Nodes (Node).Parent; |
| Target.Nodes (Node).Left := |
| Source.Nodes (Node).Left; |
| Target.Nodes (Node).Right := |
| Source.Nodes (Node).Right; |
| Target.Nodes (Node).Color := |
| Source.Nodes (Node).Color; |
| Target.Nodes (Node).Has_Element := |
| Source.Nodes (Node).Has_Element; |
| Node := Node + 1; |
| end loop; |
| |
| while Node <= Target.Capacity loop |
| N := Node; |
| Formal_Ordered_Maps.Free (Tree => Target, X => N); |
| Node := Node + 1; |
| end loop; |
| end if; |
| end return; |
| end Copy; |
| |
| ------------ |
| -- Delete -- |
| ------------ |
| |
| procedure Delete (Container : in out Map; Position : in out Cursor) is |
| begin |
| if not Has_Element (Container, Position) then |
| raise Constraint_Error with |
| "Position cursor of Delete has no element"; |
| end if; |
| |
| pragma Assert (Vet (Container, Position.Node), |
| "Position cursor of Delete is bad"); |
| |
| Tree_Operations.Delete_Node_Sans_Free (Container, |
| Position.Node); |
| Formal_Ordered_Maps.Free (Container, Position.Node); |
| end Delete; |
| |
| procedure Delete (Container : in out Map; Key : Key_Type) is |
| X : constant Node_Access := Key_Ops.Find (Container, Key); |
| |
| begin |
| if X = 0 then |
| raise Constraint_Error with "key not in map"; |
| end if; |
| |
| Tree_Operations.Delete_Node_Sans_Free (Container, X); |
| Formal_Ordered_Maps.Free (Container, X); |
| end Delete; |
| |
| ------------------ |
| -- Delete_First -- |
| ------------------ |
| |
| procedure Delete_First (Container : in out Map) is |
| X : constant Node_Access := First (Container).Node; |
| begin |
| if X /= 0 then |
| Tree_Operations.Delete_Node_Sans_Free (Container, X); |
| Formal_Ordered_Maps.Free (Container, X); |
| end if; |
| end Delete_First; |
| |
| ----------------- |
| -- Delete_Last -- |
| ----------------- |
| |
| procedure Delete_Last (Container : in out Map) is |
| X : constant Node_Access := Last (Container).Node; |
| begin |
| if X /= 0 then |
| Tree_Operations.Delete_Node_Sans_Free (Container, X); |
| Formal_Ordered_Maps.Free (Container, X); |
| end if; |
| end Delete_Last; |
| |
| ------------- |
| -- Element -- |
| ------------- |
| |
| function Element (Container : Map; Position : Cursor) return Element_Type is |
| begin |
| if not Has_Element (Container, Position) then |
| raise Constraint_Error with |
| "Position cursor of function Element has no element"; |
| end if; |
| |
| pragma Assert (Vet (Container, Position.Node), |
| "Position cursor of function Element is bad"); |
| |
| return Container.Nodes (Position.Node).Element; |
| |
| end Element; |
| |
| function Element (Container : Map; Key : Key_Type) return Element_Type is |
| Node : constant Node_Access := Find (Container, Key).Node; |
| |
| begin |
| if Node = 0 then |
| raise Constraint_Error with "key not in map"; |
| end if; |
| |
| return Container.Nodes (Node).Element; |
| end Element; |
| |
| --------------------- |
| -- Equivalent_Keys -- |
| --------------------- |
| |
| function Equivalent_Keys (Left, Right : Key_Type) return Boolean is |
| begin |
| if Left < Right |
| or else Right < Left |
| then |
| return False; |
| else |
| return True; |
| end if; |
| end Equivalent_Keys; |
| |
| ------------- |
| -- Exclude -- |
| ------------- |
| |
| procedure Exclude (Container : in out Map; Key : Key_Type) is |
| X : constant Node_Access := Key_Ops.Find (Container, Key); |
| begin |
| if X /= 0 then |
| Tree_Operations.Delete_Node_Sans_Free (Container, X); |
| Formal_Ordered_Maps.Free (Container, X); |
| end if; |
| end Exclude; |
| |
| ---------- |
| -- Find -- |
| ---------- |
| |
| function Find (Container : Map; Key : Key_Type) return Cursor is |
| Node : constant Count_Type := Key_Ops.Find (Container, Key); |
| |
| begin |
| if Node = 0 then |
| return No_Element; |
| end if; |
| |
| return (Node => Node); |
| end Find; |
| |
| ----------- |
| -- First -- |
| ----------- |
| |
| function First (Container : Map) return Cursor is |
| begin |
| if Length (Container) = 0 then |
| return No_Element; |
| end if; |
| |
| return (Node => Container.First); |
| end First; |
| |
| ------------------- |
| -- First_Element -- |
| ------------------- |
| |
| function First_Element (Container : Map) return Element_Type is |
| begin |
| if Is_Empty (Container) then |
| raise Constraint_Error with "map is empty"; |
| end if; |
| |
| return Container.Nodes (First (Container).Node).Element; |
| end First_Element; |
| |
| --------------- |
| -- First_Key -- |
| --------------- |
| |
| function First_Key (Container : Map) return Key_Type is |
| begin |
| if Is_Empty (Container) then |
| raise Constraint_Error with "map is empty"; |
| end if; |
| |
| return Container.Nodes (First (Container).Node).Key; |
| end First_Key; |
| |
| ----------- |
| -- Floor -- |
| ----------- |
| |
| function Floor (Container : Map; Key : Key_Type) return Cursor is |
| Node : constant Count_Type := Key_Ops.Floor (Container, Key); |
| |
| begin |
| if Node = 0 then |
| return No_Element; |
| end if; |
| |
| return (Node => Node); |
| end Floor; |
| |
| ---------- |
| -- Free -- |
| ---------- |
| |
| procedure Free |
| (Tree : in out Map; |
| X : Count_Type) |
| is |
| begin |
| Tree.Nodes (X).Has_Element := False; |
| Tree_Operations.Free (Tree, X); |
| end Free; |
| |
| ---------------------- |
| -- Generic_Allocate -- |
| ---------------------- |
| |
| procedure Generic_Allocate |
| (Tree : in out Tree_Types.Tree_Type'Class; |
| Node : out Count_Type) |
| is |
| procedure Allocate is |
| new Tree_Operations.Generic_Allocate (Set_Element); |
| begin |
| Allocate (Tree, Node); |
| Tree.Nodes (Node).Has_Element := True; |
| end Generic_Allocate; |
| |
| ----------------- |
| -- Has_Element -- |
| ----------------- |
| |
| function Has_Element (Container : Map; Position : Cursor) return Boolean is |
| begin |
| if Position.Node = 0 then |
| return False; |
| end if; |
| |
| return Container.Nodes (Position.Node).Has_Element; |
| end Has_Element; |
| |
| ------------- |
| -- Include -- |
| ------------- |
| |
| procedure Include |
| (Container : in out Map; |
| Key : Key_Type; |
| New_Item : Element_Type) |
| is |
| Position : Cursor; |
| Inserted : Boolean; |
| |
| begin |
| Insert (Container, Key, New_Item, Position, Inserted); |
| |
| if not Inserted then |
| if Container.Lock > 0 then |
| raise Program_Error with |
| "attempt to tamper with cursors (map is locked)"; |
| end if; |
| |
| declare |
| N : Node_Type renames Container.Nodes (Position.Node); |
| begin |
| N.Key := Key; |
| N.Element := New_Item; |
| end; |
| end if; |
| end Include; |
| |
| procedure Insert |
| (Container : in out Map; |
| Key : Key_Type; |
| New_Item : Element_Type; |
| Position : out Cursor; |
| Inserted : out Boolean) |
| is |
| function New_Node return Node_Access; |
| -- Comment ??? |
| |
| procedure Insert_Post is |
| new Key_Ops.Generic_Insert_Post (New_Node); |
| |
| procedure Insert_Sans_Hint is |
| new Key_Ops.Generic_Conditional_Insert (Insert_Post); |
| |
| -------------- |
| -- New_Node -- |
| -------------- |
| |
| function New_Node return Node_Access is |
| procedure Initialize (Node : in out Node_Type); |
| procedure Allocate_Node is new Generic_Allocate (Initialize); |
| |
| procedure Initialize (Node : in out Node_Type) is |
| begin |
| Node.Key := Key; |
| Node.Element := New_Item; |
| end Initialize; |
| |
| X : Node_Access; |
| |
| begin |
| Allocate_Node (Container, X); |
| return X; |
| end New_Node; |
| |
| -- Start of processing for Insert |
| |
| begin |
| Insert_Sans_Hint |
| (Container, |
| Key, |
| Position.Node, |
| Inserted); |
| end Insert; |
| |
| procedure Insert |
| (Container : in out Map; |
| Key : Key_Type; |
| New_Item : Element_Type) |
| is |
| Position : Cursor; |
| Inserted : Boolean; |
| |
| begin |
| Insert (Container, Key, New_Item, Position, Inserted); |
| |
| if not Inserted then |
| raise Constraint_Error with "key already in map"; |
| end if; |
| end Insert; |
| |
| ------------ |
| -- Insert -- |
| ------------ |
| |
| procedure Insert |
| (Container : in out Map; |
| Key : Key_Type; |
| Position : out Cursor; |
| Inserted : out Boolean) |
| is |
| function New_Node return Node_Access; |
| |
| procedure Insert_Post is |
| new Key_Ops.Generic_Insert_Post (New_Node); |
| |
| procedure Insert_Sans_Hint is |
| new Key_Ops.Generic_Conditional_Insert (Insert_Post); |
| |
| -------------- |
| -- New_Node -- |
| -------------- |
| |
| function New_Node return Node_Access is |
| procedure Initialize (Node : in out Node_Type); |
| procedure Allocate_Node is new Generic_Allocate (Initialize); |
| |
| ---------------- |
| -- Initialize -- |
| ---------------- |
| |
| procedure Initialize (Node : in out Node_Type) is |
| begin |
| Node.Key := Key; |
| end Initialize; |
| |
| X : Node_Access; |
| |
| -- Start of processing for New_Node |
| |
| begin |
| Allocate_Node (Container, X); |
| return X; |
| end New_Node; |
| |
| -- Start of processing for Insert |
| |
| begin |
| Insert_Sans_Hint (Container, Key, Position.Node, Inserted); |
| end Insert; |
| |
| -------------- |
| -- Is_Empty -- |
| -------------- |
| |
| function Is_Empty (Container : Map) return Boolean is |
| begin |
| return Length (Container) = 0; |
| end Is_Empty; |
| |
| ------------------------- |
| -- Is_Greater_Key_Node -- |
| ------------------------- |
| |
| function Is_Greater_Key_Node |
| (Left : Key_Type; |
| Right : Node_Type) return Boolean |
| is |
| begin |
| -- k > node same as node < k |
| |
| return Right.Key < Left; |
| end Is_Greater_Key_Node; |
| |
| ---------------------- |
| -- Is_Less_Key_Node -- |
| ---------------------- |
| |
| function Is_Less_Key_Node |
| (Left : Key_Type; |
| Right : Node_Type) return Boolean |
| is |
| begin |
| return Left < Right.Key; |
| end Is_Less_Key_Node; |
| |
| ------------- |
| -- Iterate -- |
| ------------- |
| |
| procedure Iterate |
| (Container : Map; |
| Process : |
| not null access procedure (Container : Map; Position : Cursor)) |
| is |
| procedure Process_Node (Node : Node_Access); |
| pragma Inline (Process_Node); |
| |
| procedure Local_Iterate is |
| new Tree_Operations.Generic_Iteration (Process_Node); |
| |
| ------------------ |
| -- Process_Node -- |
| ------------------ |
| |
| procedure Process_Node (Node : Node_Access) is |
| begin |
| Process (Container, (Node => Node)); |
| end Process_Node; |
| |
| B : Natural renames Container'Unrestricted_Access.Busy; |
| |
| -- Start of processing for Iterate |
| |
| begin |
| B := B + 1; |
| |
| begin |
| Local_Iterate (Container); |
| exception |
| when others => |
| B := B - 1; |
| raise; |
| end; |
| |
| B := B - 1; |
| end Iterate; |
| |
| --------- |
| -- Key -- |
| --------- |
| |
| function Key (Container : Map; Position : Cursor) return Key_Type is |
| begin |
| if not Has_Element (Container, Position) then |
| raise Constraint_Error with |
| "Position cursor of function Key has no element"; |
| end if; |
| |
| pragma Assert (Vet (Container, Position.Node), |
| "Position cursor of function Key is bad"); |
| |
| return Container.Nodes (Position.Node).Key; |
| end Key; |
| |
| ---------- |
| -- Last -- |
| ---------- |
| |
| function Last (Container : Map) return Cursor is |
| begin |
| if Length (Container) = 0 then |
| return No_Element; |
| end if; |
| |
| return (Node => Container.Last); |
| end Last; |
| |
| ------------------ |
| -- Last_Element -- |
| ------------------ |
| |
| function Last_Element (Container : Map) return Element_Type is |
| begin |
| if Is_Empty (Container) then |
| raise Constraint_Error with "map is empty"; |
| end if; |
| |
| return Container.Nodes (Last (Container).Node).Element; |
| end Last_Element; |
| |
| -------------- |
| -- Last_Key -- |
| -------------- |
| |
| function Last_Key (Container : Map) return Key_Type is |
| begin |
| if Is_Empty (Container) then |
| raise Constraint_Error with "map is empty"; |
| end if; |
| |
| return Container.Nodes (Last (Container).Node).Key; |
| end Last_Key; |
| |
| ---------- |
| -- Left -- |
| ---------- |
| |
| function Left (Container : Map; Position : Cursor) return Map is |
| Curs : Cursor := Position; |
| C : Map (Container.Capacity) := Copy (Container, Container.Capacity); |
| Node : Count_Type; |
| |
| begin |
| if Curs = No_Element then |
| return C; |
| end if; |
| |
| if not Has_Element (Container, Curs) then |
| raise Constraint_Error; |
| end if; |
| |
| while Curs.Node /= 0 loop |
| Node := Curs.Node; |
| Delete (C, Curs); |
| Curs := Next (Container, (Node => Node)); |
| end loop; |
| |
| return C; |
| end Left; |
| |
| -------------- |
| -- Left_Son -- |
| -------------- |
| |
| function Left_Son (Node : Node_Type) return Count_Type is |
| begin |
| return Node.Left; |
| end Left_Son; |
| |
| ------------ |
| -- Length -- |
| ------------ |
| |
| function Length (Container : Map) return Count_Type is |
| begin |
| return Container.Length; |
| end Length; |
| |
| ---------- |
| -- Move -- |
| ---------- |
| |
| procedure Move (Target : in out Map; Source : in out Map) is |
| NN : Tree_Types.Nodes_Type renames Source.Nodes; |
| X : Node_Access; |
| |
| begin |
| if Target'Address = Source'Address then |
| return; |
| end if; |
| |
| if Target.Capacity < Length (Source) then |
| raise Constraint_Error with -- ??? |
| "Source length exceeds Target capacity"; |
| end if; |
| |
| if Source.Busy > 0 then |
| raise Program_Error with |
| "attempt to tamper with cursors of Source (list is busy)"; |
| end if; |
| |
| Clear (Target); |
| |
| loop |
| X := First (Source).Node; |
| exit when X = 0; |
| |
| -- Here we insert a copy of the source element into the target, and |
| -- then delete the element from the source. Another possibility is |
| -- that delete it first (and hang onto its index), then insert it. |
| -- ??? |
| |
| Insert (Target, NN (X).Key, NN (X).Element); -- optimize??? |
| |
| Tree_Operations.Delete_Node_Sans_Free (Source, X); |
| Formal_Ordered_Maps.Free (Source, X); |
| end loop; |
| end Move; |
| |
| ---------- |
| -- Next -- |
| ---------- |
| |
| procedure Next (Container : Map; Position : in out Cursor) is |
| begin |
| Position := Next (Container, Position); |
| end Next; |
| |
| function Next (Container : Map; Position : Cursor) return Cursor is |
| begin |
| if Position = No_Element then |
| return No_Element; |
| end if; |
| |
| if not Has_Element (Container, Position) then |
| raise Constraint_Error; |
| end if; |
| |
| pragma Assert (Vet (Container, Position.Node), |
| "bad cursor in Next"); |
| |
| return (Node => Tree_Operations.Next (Container, Position.Node)); |
| end Next; |
| |
| ------------- |
| -- Overlap -- |
| ------------- |
| |
| function Overlap (Left, Right : Map) return Boolean is |
| begin |
| if Length (Left) = 0 or Length (Right) = 0 then |
| return False; |
| end if; |
| |
| declare |
| L_Node : Count_Type := First (Left).Node; |
| R_Node : Count_Type := First (Right).Node; |
| L_Last : constant Count_Type := Next (Left, Last (Left).Node); |
| R_Last : constant Count_Type := Next (Right, Last (Right).Node); |
| |
| begin |
| if Left'Address = Right'Address then |
| return True; |
| end if; |
| |
| loop |
| if L_Node = L_Last |
| or else R_Node = R_Last |
| then |
| return False; |
| end if; |
| |
| if Left.Nodes (L_Node).Key < Right.Nodes (R_Node).Key then |
| L_Node := Next (Left, L_Node); |
| |
| elsif Right.Nodes (R_Node).Key < Left.Nodes (L_Node).Key then |
| R_Node := Next (Right, R_Node); |
| |
| else |
| return True; |
| end if; |
| end loop; |
| end; |
| end Overlap; |
| |
| ------------ |
| -- Parent -- |
| ------------ |
| |
| function Parent (Node : Node_Type) return Count_Type is |
| begin |
| return Node.Parent; |
| end Parent; |
| |
| -------------- |
| -- Previous -- |
| -------------- |
| |
| procedure Previous (Container : Map; Position : in out Cursor) is |
| begin |
| Position := Previous (Container, Position); |
| end Previous; |
| |
| function Previous (Container : Map; Position : Cursor) return Cursor is |
| begin |
| if Position = No_Element then |
| return No_Element; |
| end if; |
| |
| if not Has_Element (Container, Position) then |
| raise Constraint_Error; |
| end if; |
| |
| pragma Assert (Vet (Container, Position.Node), |
| "bad cursor in Previous"); |
| |
| declare |
| Node : constant Count_Type := |
| Tree_Operations.Previous (Container, Position.Node); |
| |
| begin |
| if Node = 0 then |
| return No_Element; |
| end if; |
| |
| return (Node => Node); |
| end; |
| end Previous; |
| |
| ------------------- |
| -- Query_Element -- |
| ------------------- |
| |
| procedure Query_Element |
| (Container : in out Map; |
| Position : Cursor; |
| Process : not null access procedure (Key : Key_Type; |
| Element : Element_Type)) |
| is |
| begin |
| if not Has_Element (Container, Position) then |
| raise Constraint_Error with |
| "Position cursor of Query_Element has no element"; |
| end if; |
| |
| pragma Assert (Vet (Container, Position.Node), |
| "Position cursor of Query_Element is bad"); |
| |
| declare |
| B : Natural renames Container.Busy; |
| L : Natural renames Container.Lock; |
| |
| begin |
| B := B + 1; |
| L := L + 1; |
| |
| declare |
| N : Node_Type renames Container.Nodes (Position.Node); |
| K : Key_Type renames N.Key; |
| E : Element_Type renames N.Element; |
| |
| begin |
| Process (K, E); |
| exception |
| when others => |
| L := L - 1; |
| B := B - 1; |
| raise; |
| end; |
| |
| L := L - 1; |
| B := B - 1; |
| end; |
| end Query_Element; |
| |
| ---------- |
| -- Read -- |
| ---------- |
| |
| procedure Read |
| (Stream : not null access Root_Stream_Type'Class; |
| Container : out Map) |
| is |
| procedure Read_Element (Node : in out Node_Type); |
| pragma Inline (Read_Element); |
| |
| procedure Allocate is |
| new Generic_Allocate (Read_Element); |
| |
| procedure Read_Elements is |
| new Tree_Operations.Generic_Read (Allocate); |
| |
| ------------------ |
| -- Read_Element -- |
| ------------------ |
| |
| procedure Read_Element (Node : in out Node_Type) is |
| begin |
| Key_Type'Read (Stream, Node.Key); |
| Element_Type'Read (Stream, Node.Element); |
| end Read_Element; |
| |
| -- Start of processing for Read |
| |
| begin |
| Read_Elements (Stream, Container); |
| end Read; |
| |
| procedure Read |
| (Stream : not null access Root_Stream_Type'Class; |
| Item : out Cursor) |
| is |
| begin |
| raise Program_Error with "attempt to stream map cursor"; |
| end Read; |
| |
| ------------- |
| -- Replace -- |
| ------------- |
| |
| procedure Replace |
| (Container : in out Map; |
| Key : Key_Type; |
| New_Item : Element_Type) |
| is |
| begin |
| declare |
| Node : constant Node_Access := Key_Ops.Find (Container, Key); |
| |
| begin |
| if Node = 0 then |
| raise Constraint_Error with "key not in map"; |
| end if; |
| |
| if Container.Lock > 0 then |
| raise Program_Error with |
| "attempt to tamper with cursors (map is locked)"; |
| end if; |
| |
| declare |
| N : Node_Type renames Container.Nodes (Node); |
| begin |
| N.Key := Key; |
| N.Element := New_Item; |
| end; |
| end; |
| end Replace; |
| |
| --------------------- |
| -- Replace_Element -- |
| --------------------- |
| |
| procedure Replace_Element |
| (Container : in out Map; |
| Position : Cursor; |
| New_Item : Element_Type) |
| is |
| begin |
| if not Has_Element (Container, Position) then |
| raise Constraint_Error with |
| "Position cursor of Replace_Element has no element"; |
| end if; |
| |
| if Container.Lock > 0 then |
| raise Program_Error with |
| "attempt to tamper with cursors (map is locked)"; |
| end if; |
| |
| pragma Assert (Vet (Container, Position.Node), |
| "Position cursor of Replace_Element is bad"); |
| |
| Container.Nodes (Position.Node).Element := New_Item; |
| end Replace_Element; |
| |
| --------------------- |
| -- Reverse_Iterate -- |
| --------------------- |
| |
| procedure Reverse_Iterate |
| (Container : Map; |
| Process : not null access procedure (Container : Map; |
| Position : Cursor)) |
| is |
| procedure Process_Node (Node : Node_Access); |
| pragma Inline (Process_Node); |
| |
| procedure Local_Reverse_Iterate is |
| new Tree_Operations.Generic_Reverse_Iteration (Process_Node); |
| |
| ------------------ |
| -- Process_Node -- |
| ------------------ |
| |
| procedure Process_Node (Node : Node_Access) is |
| begin |
| Process (Container, (Node => Node)); |
| end Process_Node; |
| |
| B : Natural renames Container'Unrestricted_Access.Busy; |
| |
| -- Start of processing for Reverse_Iterate |
| |
| begin |
| B := B + 1; |
| |
| begin |
| Local_Reverse_Iterate (Container); |
| exception |
| when others => |
| B := B - 1; |
| raise; |
| end; |
| |
| B := B - 1; |
| end Reverse_Iterate; |
| |
| ----------- |
| -- Right -- |
| ----------- |
| |
| function Right (Container : Map; Position : Cursor) return Map is |
| Curs : Cursor := First (Container); |
| C : Map (Container.Capacity) := Copy (Container, Container.Capacity); |
| Node : Count_Type; |
| |
| begin |
| if Curs = No_Element then |
| Clear (C); |
| return C; |
| |
| end if; |
| if Position /= No_Element and not Has_Element (Container, Position) then |
| raise Constraint_Error; |
| end if; |
| |
| while Curs.Node /= Position.Node loop |
| Node := Curs.Node; |
| Delete (C, Curs); |
| Curs := Next (Container, (Node => Node)); |
| end loop; |
| |
| return C; |
| end Right; |
| |
| --------------- |
| -- Right_Son -- |
| --------------- |
| |
| function Right_Son (Node : Node_Type) return Count_Type is |
| begin |
| return Node.Right; |
| end Right_Son; |
| |
| --------------- |
| -- Set_Color -- |
| --------------- |
| |
| procedure Set_Color (Node : in out Node_Type; Color : Color_Type) is |
| begin |
| Node.Color := Color; |
| end Set_Color; |
| |
| -------------- |
| -- Set_Left -- |
| -------------- |
| |
| procedure Set_Left (Node : in out Node_Type; Left : Count_Type) is |
| begin |
| Node.Left := Left; |
| end Set_Left; |
| |
| ---------------- |
| -- Set_Parent -- |
| ---------------- |
| |
| procedure Set_Parent (Node : in out Node_Type; Parent : Count_Type) is |
| begin |
| Node.Parent := Parent; |
| end Set_Parent; |
| |
| --------------- |
| -- Set_Right -- |
| --------------- |
| |
| procedure Set_Right (Node : in out Node_Type; Right : Count_Type) is |
| begin |
| Node.Right := Right; |
| end Set_Right; |
| |
| ------------------ |
| -- Strict_Equal -- |
| ------------------ |
| |
| function Strict_Equal (Left, Right : Map) return Boolean is |
| LNode : Count_Type := First (Left).Node; |
| RNode : Count_Type := First (Right).Node; |
| |
| begin |
| if Length (Left) /= Length (Right) then |
| return False; |
| end if; |
| |
| while LNode = RNode loop |
| if LNode = 0 then |
| return True; |
| end if; |
| |
| if Left.Nodes (LNode).Element /= Right.Nodes (RNode).Element |
| or else Left.Nodes (LNode).Key /= Right.Nodes (RNode).Key |
| then |
| exit; |
| end if; |
| |
| LNode := Next (Left, LNode); |
| RNode := Next (Right, RNode); |
| end loop; |
| |
| return False; |
| end Strict_Equal; |
| |
| -------------------- |
| -- Update_Element -- |
| -------------------- |
| |
| procedure Update_Element |
| (Container : in out Map; |
| Position : Cursor; |
| Process : not null access procedure (Key : Key_Type; |
| Element : in out Element_Type)) |
| is |
| begin |
| if not Has_Element (Container, Position) then |
| raise Constraint_Error with |
| "Position cursor of Update_Element has no element"; |
| end if; |
| |
| pragma Assert (Vet (Container, Position.Node), |
| "Position cursor of Update_Element is bad"); |
| |
| declare |
| B : Natural renames Container.Busy; |
| L : Natural renames Container.Lock; |
| |
| begin |
| B := B + 1; |
| L := L + 1; |
| |
| declare |
| N : Node_Type renames Container.Nodes (Position.Node); |
| K : Key_Type renames N.Key; |
| E : Element_Type renames N.Element; |
| |
| begin |
| Process (K, E); |
| exception |
| when others => |
| L := L - 1; |
| B := B - 1; |
| raise; |
| end; |
| |
| L := L - 1; |
| B := B - 1; |
| end; |
| end Update_Element; |
| |
| ----------- |
| -- Write -- |
| ----------- |
| |
| procedure Write |
| (Stream : not null access Root_Stream_Type'Class; |
| Container : Map) |
| is |
| procedure Write_Node |
| (Stream : not null access Root_Stream_Type'Class; |
| Node : Node_Type); |
| pragma Inline (Write_Node); |
| |
| procedure Write_Nodes is |
| new Tree_Operations.Generic_Write (Write_Node); |
| |
| ---------------- |
| -- Write_Node -- |
| ---------------- |
| |
| procedure Write_Node |
| (Stream : not null access Root_Stream_Type'Class; |
| Node : Node_Type) |
| is |
| begin |
| Key_Type'Write (Stream, Node.Key); |
| Element_Type'Write (Stream, Node.Element); |
| end Write_Node; |
| |
| -- Start of processing for Write |
| |
| begin |
| Write_Nodes (Stream, Container); |
| end Write; |
| |
| procedure Write |
| (Stream : not null access Root_Stream_Type'Class; |
| Item : Cursor) |
| is |
| begin |
| raise Program_Error with "attempt to stream map cursor"; |
| end Write; |
| |
| end Ada.Containers.Formal_Ordered_Maps; |
