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Diffstat (limited to 'gcc/ada/libgnat/a-coorse.ads')
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diff --git a/gcc/ada/libgnat/a-coorse.ads b/gcc/ada/libgnat/a-coorse.ads new file mode 100644 index 00000000000..3222bfba275 --- /dev/null +++ b/gcc/ada/libgnat/a-coorse.ads @@ -0,0 +1,453 @@ +------------------------------------------------------------------------------ +-- -- +-- 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) 2004-2017, 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; + +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 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; + + pragma Preelaborable_Initialization (Set); + + type Cursor is private; + pragma Preelaborable_Initialization (Cursor); + + function Has_Element (Position : Cursor) return Boolean; + + Empty_Set : constant 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; + + 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 => <>); + + 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; |