| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT LIBRARY COMPONENTS -- |
| -- -- |
| -- A D A . C O N T A I N E R S . O R D E R E D _ S E T S -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 2004-2022, Free Software Foundation, Inc. -- |
| -- -- |
| -- This specification is derived from the Ada Reference Manual for use with -- |
| -- GNAT. The copyright notice above, and the license provisions that follow -- |
| -- apply solely to the contents of the part following the private keyword. -- |
| -- -- |
| -- 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/>. -- |
| -- -- |
| -- This unit was originally developed by Matthew J Heaney. -- |
| ------------------------------------------------------------------------------ |
| |
| with Ada.Iterator_Interfaces; |
| |
| with Ada.Containers.Helpers; |
| private with Ada.Containers.Red_Black_Trees; |
| private with Ada.Finalization; |
| private with Ada.Streams; |
| private with Ada.Strings.Text_Buffers; |
| |
| generic |
| type Element_Type is private; |
| |
| with function "<" (Left, Right : Element_Type) return Boolean is <>; |
| with function "=" (Left, Right : Element_Type) return Boolean is <>; |
| |
| package Ada.Containers.Ordered_Sets with |
| SPARK_Mode => Off |
| is |
| pragma Annotate (CodePeer, Skip_Analysis); |
| pragma Preelaborate; |
| pragma Remote_Types; |
| |
| function Equivalent_Elements (Left, Right : Element_Type) return Boolean; |
| |
| type Set is tagged private |
| with Constant_Indexing => Constant_Reference, |
| Default_Iterator => Iterate, |
| Iterator_Element => Element_Type; |
| -- Aggregate => (Empty => Empty, |
| -- Add_Unnamed => Include); |
| |
| pragma Preelaborable_Initialization (Set); |
| |
| type Cursor is private; |
| pragma Preelaborable_Initialization (Cursor); |
| |
| function Has_Element (Position : Cursor) return Boolean; |
| |
| Empty_Set : constant Set; |
| function Empty return Set; |
| |
| No_Element : constant Cursor; |
| |
| package Set_Iterator_Interfaces is new |
| Ada.Iterator_Interfaces (Cursor, Has_Element); |
| |
| function "=" (Left, Right : Set) return Boolean; |
| |
| function Equivalent_Sets (Left, Right : Set) return Boolean; |
| |
| function To_Set (New_Item : Element_Type) return Set; |
| |
| function Length (Container : Set) return Count_Type; |
| |
| function Is_Empty (Container : Set) return Boolean; |
| |
| procedure Clear (Container : in out Set); |
| |
| function Element (Position : Cursor) return Element_Type; |
| |
| procedure Replace_Element |
| (Container : in out Set; |
| Position : Cursor; |
| New_Item : Element_Type); |
| |
| procedure Query_Element |
| (Position : Cursor; |
| Process : not null access procedure (Element : Element_Type)); |
| |
| type Constant_Reference_Type |
| (Element : not null access constant Element_Type) is |
| private |
| with |
| Implicit_Dereference => Element; |
| |
| function Constant_Reference |
| (Container : aliased Set; |
| Position : Cursor) return Constant_Reference_Type; |
| pragma Inline (Constant_Reference); |
| |
| procedure Assign (Target : in out Set; Source : Set); |
| |
| function Copy (Source : Set) return Set; |
| |
| procedure Move (Target : in out Set; Source : in out Set); |
| |
| procedure Insert |
| (Container : in out Set; |
| New_Item : Element_Type; |
| Position : out Cursor; |
| Inserted : out Boolean); |
| |
| procedure Insert |
| (Container : in out Set; |
| New_Item : Element_Type); |
| |
| procedure Include |
| (Container : in out Set; |
| New_Item : Element_Type); |
| |
| procedure Replace |
| (Container : in out Set; |
| New_Item : Element_Type); |
| |
| procedure Exclude |
| (Container : in out Set; |
| Item : Element_Type); |
| |
| procedure Delete |
| (Container : in out Set; |
| Item : Element_Type); |
| |
| procedure Delete |
| (Container : in out Set; |
| Position : in out Cursor); |
| |
| procedure Delete_First (Container : in out Set); |
| |
| procedure Delete_Last (Container : in out Set); |
| |
| procedure Union (Target : in out Set; Source : Set); |
| |
| function Union (Left, Right : Set) return Set; |
| |
| function "or" (Left, Right : Set) return Set renames Union; |
| |
| procedure Intersection (Target : in out Set; Source : Set); |
| |
| function Intersection (Left, Right : Set) return Set; |
| |
| function "and" (Left, Right : Set) return Set renames Intersection; |
| |
| procedure Difference (Target : in out Set; Source : Set); |
| |
| function Difference (Left, Right : Set) return Set; |
| |
| function "-" (Left, Right : Set) return Set renames Difference; |
| |
| procedure Symmetric_Difference (Target : in out Set; Source : Set); |
| |
| function Symmetric_Difference (Left, Right : Set) return Set; |
| |
| function "xor" (Left, Right : Set) return Set renames Symmetric_Difference; |
| |
| function Overlap (Left, Right : Set) return Boolean; |
| |
| function Is_Subset (Subset : Set; Of_Set : Set) return Boolean; |
| |
| function First (Container : Set) return Cursor; |
| |
| function First_Element (Container : Set) return Element_Type; |
| |
| function Last (Container : Set) return Cursor; |
| |
| function Last_Element (Container : Set) return Element_Type; |
| |
| function Next (Position : Cursor) return Cursor; |
| |
| procedure Next (Position : in out Cursor); |
| |
| function Previous (Position : Cursor) return Cursor; |
| |
| procedure Previous (Position : in out Cursor); |
| |
| function Find (Container : Set; Item : Element_Type) return Cursor; |
| |
| function Floor (Container : Set; Item : Element_Type) return Cursor; |
| |
| function Ceiling (Container : Set; Item : Element_Type) return Cursor; |
| |
| function Contains (Container : Set; Item : Element_Type) return Boolean; |
| |
| function "<" (Left, Right : Cursor) return Boolean; |
| |
| function ">" (Left, Right : Cursor) return Boolean; |
| |
| function "<" (Left : Cursor; Right : Element_Type) return Boolean; |
| |
| function ">" (Left : Cursor; Right : Element_Type) return Boolean; |
| |
| function "<" (Left : Element_Type; Right : Cursor) return Boolean; |
| |
| function ">" (Left : Element_Type; Right : Cursor) return Boolean; |
| |
| procedure Iterate |
| (Container : Set; |
| Process : not null access procedure (Position : Cursor)); |
| |
| procedure Reverse_Iterate |
| (Container : Set; |
| Process : not null access procedure (Position : Cursor)); |
| |
| function Iterate |
| (Container : Set) |
| return Set_Iterator_Interfaces.Reversible_Iterator'class; |
| |
| function Iterate |
| (Container : Set; |
| Start : Cursor) |
| return Set_Iterator_Interfaces.Reversible_Iterator'class; |
| |
| generic |
| type Key_Type (<>) is private; |
| |
| with function Key (Element : Element_Type) return Key_Type; |
| |
| with function "<" (Left, Right : Key_Type) return Boolean is <>; |
| |
| package Generic_Keys is |
| |
| function Equivalent_Keys (Left, Right : Key_Type) return Boolean; |
| |
| function Key (Position : Cursor) return Key_Type; |
| |
| function Element (Container : Set; Key : Key_Type) return Element_Type; |
| |
| procedure Replace |
| (Container : in out Set; |
| Key : Key_Type; |
| New_Item : Element_Type); |
| |
| procedure Exclude (Container : in out Set; Key : Key_Type); |
| |
| procedure Delete (Container : in out Set; Key : Key_Type); |
| |
| function Find (Container : Set; Key : Key_Type) return Cursor; |
| |
| function Floor (Container : Set; Key : Key_Type) return Cursor; |
| |
| function Ceiling (Container : Set; Key : Key_Type) return Cursor; |
| |
| function Contains (Container : Set; Key : Key_Type) return Boolean; |
| |
| procedure Update_Element_Preserving_Key |
| (Container : in out Set; |
| Position : Cursor; |
| Process : not null access |
| procedure (Element : in out Element_Type)); |
| |
| type Reference_Type (Element : not null access Element_Type) is private |
| with |
| Implicit_Dereference => Element; |
| |
| function Reference_Preserving_Key |
| (Container : aliased in out Set; |
| Position : Cursor) return Reference_Type; |
| |
| function Constant_Reference |
| (Container : aliased Set; |
| Key : Key_Type) return Constant_Reference_Type; |
| |
| function Reference_Preserving_Key |
| (Container : aliased in out Set; |
| Key : Key_Type) return Reference_Type; |
| |
| private |
| type Set_Access is access all Set; |
| for Set_Access'Storage_Size use 0; |
| |
| type Key_Access is access all Key_Type; |
| |
| package Impl is new Helpers.Generic_Implementation; |
| |
| type Reference_Control_Type is |
| new Impl.Reference_Control_Type with |
| record |
| Container : Set_Access; |
| Pos : Cursor; |
| Old_Key : Key_Access; |
| end record; |
| |
| overriding procedure Finalize (Control : in out Reference_Control_Type); |
| pragma Inline (Finalize); |
| |
| type Reference_Type (Element : not null access Element_Type) is record |
| Control : Reference_Control_Type; |
| end record; |
| |
| use Ada.Streams; |
| |
| procedure Write |
| (Stream : not null access Root_Stream_Type'Class; |
| Item : Reference_Type); |
| |
| for Reference_Type'Write use Write; |
| |
| procedure Read |
| (Stream : not null access Root_Stream_Type'Class; |
| Item : out Reference_Type); |
| |
| for Reference_Type'Read use Read; |
| end Generic_Keys; |
| |
| private |
| |
| pragma Inline (Next); |
| pragma Inline (Previous); |
| |
| type Node_Type; |
| type Node_Access is access Node_Type; |
| |
| type Node_Type is limited record |
| Parent : Node_Access; |
| Left : Node_Access; |
| Right : Node_Access; |
| Color : Red_Black_Trees.Color_Type := Red_Black_Trees.Red; |
| Element : aliased Element_Type; |
| end record; |
| |
| package Tree_Types is |
| new Red_Black_Trees.Generic_Tree_Types (Node_Type, Node_Access); |
| |
| type Set is new Ada.Finalization.Controlled with record |
| Tree : Tree_Types.Tree_Type; |
| end record with Put_Image => Put_Image; |
| |
| procedure Put_Image |
| (S : in out Ada.Strings.Text_Buffers.Root_Buffer_Type'Class; V : Set); |
| |
| overriding procedure Adjust (Container : in out Set); |
| |
| overriding procedure Finalize (Container : in out Set) renames Clear; |
| |
| use Red_Black_Trees; |
| use Tree_Types, Tree_Types.Implementation; |
| use Ada.Finalization; |
| use Ada.Streams; |
| |
| procedure Write |
| (Stream : not null access Root_Stream_Type'Class; |
| Container : Set); |
| |
| for Set'Write use Write; |
| |
| procedure Read |
| (Stream : not null access Root_Stream_Type'Class; |
| Container : out Set); |
| |
| for Set'Read use Read; |
| |
| type Set_Access is access all Set; |
| for Set_Access'Storage_Size use 0; |
| |
| type Cursor is record |
| Container : Set_Access; |
| Node : Node_Access; |
| end record; |
| |
| procedure Write |
| (Stream : not null access Root_Stream_Type'Class; |
| Item : Cursor); |
| |
| for Cursor'Write use Write; |
| |
| procedure Read |
| (Stream : not null access Root_Stream_Type'Class; |
| Item : out Cursor); |
| |
| for Cursor'Read use Read; |
| |
| subtype Reference_Control_Type is Implementation.Reference_Control_Type; |
| -- It is necessary to rename this here, so that the compiler can find it |
| |
| type Constant_Reference_Type |
| (Element : not null access constant Element_Type) is |
| record |
| Control : Reference_Control_Type := |
| raise Program_Error with "uninitialized reference"; |
| -- The RM says, "The default initialization of an object of |
| -- type Constant_Reference_Type or Reference_Type propagates |
| -- Program_Error." |
| end record; |
| |
| procedure Write |
| (Stream : not null access Root_Stream_Type'Class; |
| Item : Constant_Reference_Type); |
| |
| for Constant_Reference_Type'Write use Write; |
| |
| procedure Read |
| (Stream : not null access Root_Stream_Type'Class; |
| Item : out Constant_Reference_Type); |
| |
| for Constant_Reference_Type'Read use Read; |
| |
| -- Three operations are used to optimize in the expansion of "for ... of" |
| -- loops: the Next(Cursor) procedure in the visible part, and the following |
| -- Pseudo_Reference and Get_Element_Access functions. See Sem_Ch5 for |
| -- details. |
| |
| function Pseudo_Reference |
| (Container : aliased Set'Class) return Reference_Control_Type; |
| pragma Inline (Pseudo_Reference); |
| -- Creates an object of type Reference_Control_Type pointing to the |
| -- container, and increments the Lock. Finalization of this object will |
| -- decrement the Lock. |
| |
| type Element_Access is access all Element_Type with |
| Storage_Size => 0; |
| |
| function Get_Element_Access |
| (Position : Cursor) return not null Element_Access; |
| -- Returns a pointer to the element designated by Position. |
| |
| Empty_Set : constant Set := (Controlled with others => <>); |
| function Empty return Set is (Empty_Set); |
| |
| No_Element : constant Cursor := Cursor'(null, null); |
| |
| type Iterator is new Limited_Controlled and |
| Set_Iterator_Interfaces.Reversible_Iterator with |
| record |
| Container : Set_Access; |
| Node : Node_Access; |
| end record |
| with Disable_Controlled => not T_Check; |
| |
| overriding procedure Finalize (Object : in out Iterator); |
| |
| overriding function First (Object : Iterator) return Cursor; |
| overriding function Last (Object : Iterator) return Cursor; |
| |
| overriding function Next |
| (Object : Iterator; |
| Position : Cursor) return Cursor; |
| |
| overriding function Previous |
| (Object : Iterator; |
| Position : Cursor) return Cursor; |
| |
| end Ada.Containers.Ordered_Sets; |