a-stouut$(objext) \
a-strbou$(objext) \
a-stream$(objext) \
+ a-strsto$(objext) \
+ a-ststbo$(objext) \
+ a-ststun$(objext) \
a-strfix$(objext) \
a-strhas$(objext) \
a-string$(objext) \
("a-stoufi", T), -- Ada.Strings.Text_Output.Files
("a-stobfi", T), -- Ada.Strings.Text_Output.Basic_Files
("a-stobbu", T), -- Ada.Strings.Text_Output.Bit_Buckets
- ("a-stoufo", T) -- Ada.Strings.Text_Output.Formatting
+ ("a-stoufo", T), -- Ada.Strings.Text_Output.Formatting
+ ("a-strsto", T), -- Ada.Streams.Storage
+ ("a-ststbo", T), -- Ada.Streams.Storage.Bounded
+ ("a-ststun", T) -- Ada.Streams.Storage.Unbounded
);
-----------------------
--- /dev/null
+------------------------------------------------------------------------------
+-- --
+-- GNAT LIBRARY COMPONENTS --
+-- --
+-- A D A . S T R E A M S . S T O R A G E --
+-- --
+-- S p e c --
+-- --
+-- Copyright (C) 2020, 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/>. --
+-- --
+------------------------------------------------------------------------------
+
+pragma Ada_2020;
+package Ada.Streams.Storage with Pure is
+
+ type Storage_Stream_Type is abstract new Root_Stream_Type with private;
+
+ function Element_Count
+ (Stream : Storage_Stream_Type) return Stream_Element_Count is abstract;
+
+ procedure Clear (Stream : in out Storage_Stream_Type) is abstract;
+
+private
+ type Storage_Stream_Type is abstract new Root_Stream_Type with null record;
+end Ada.Streams.Storage;
--- /dev/null
+------------------------------------------------------------------------------
+-- --
+-- GNAT LIBRARY COMPONENTS --
+-- --
+-- A D A . S T R E A M S . S T O R A G E . B O U N D E D --
+-- --
+-- B o d y --
+-- --
+-- Copyright (C) 2020, 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/>. --
+-- --
+------------------------------------------------------------------------------
+
+pragma Ada_2020;
+package body Ada.Streams.Storage.Bounded is
+
+ ----------
+ -- Read --
+ ----------
+
+ overriding procedure Read
+ (Stream : in out Stream_Type; Item : out Stream_Element_Array;
+ Last : out Stream_Element_Offset)
+ is
+ EA : Stream_Element_Array renames
+ Stream.Elements (1 .. Element_Count (Stream));
+ begin
+ if Item'Length = 0 then
+ Last := Item'First - 1;
+
+ -- If the entire content of the stream fits in Item, then copy it and
+ -- clear the stream. This is likely the usual case.
+
+ elsif Element_Count (Stream) <= Item'Length then
+ Last := Item'First + Element_Count (Stream) - 1;
+ Item (Item'First .. Last) := EA;
+ Clear (Stream);
+
+ -- Otherwise, copy as much into Item as will fit. Then slide the
+ -- remaining part of the stream down, and compute the new Count.
+ -- We expect this to be the unusual case, so the cost of copying
+ -- the remaining part probably doesn't matter.
+
+ else
+ Last := Item'Last;
+
+ declare
+ New_Count : constant Stream_Element_Count :=
+ Element_Count (Stream) - Item'Length;
+ begin
+ Item := EA (1 .. Item'Length);
+ EA (1 .. New_Count) :=
+ EA (Element_Count (Stream) - New_Count + 1 ..
+ Element_Count (Stream));
+ Stream.Count := New_Count;
+ end;
+ end if;
+ end Read;
+
+ -----------
+ -- Write --
+ -----------
+
+ overriding procedure Write
+ (Stream : in out Stream_Type; Item : Stream_Element_Array)
+ is
+ pragma Assert
+ (Element_Count (Stream) + Item'Length <= Stream.Max_Elements
+ or else (raise Constraint_Error));
+ -- That is a precondition in the RM
+
+ New_Count : constant Stream_Element_Count :=
+ Element_Count (Stream) + Item'Length;
+ begin
+ Stream.Elements (Element_Count (Stream) + 1 .. New_Count) := Item;
+ Stream.Count := New_Count;
+ end Write;
+
+ -------------------
+ -- Element_Count --
+ -------------------
+
+ overriding function Element_Count
+ (Stream : Stream_Type) return Stream_Element_Count
+ is
+ begin
+ return Stream.Count;
+ end Element_Count;
+
+ -----------
+ -- Clear --
+ -----------
+
+ overriding procedure Clear (Stream : in out Stream_Type)
+ is
+ begin
+ Stream.Count := 0;
+ end Clear;
+
+end Ada.Streams.Storage.Bounded;
--- /dev/null
+------------------------------------------------------------------------------
+-- --
+-- GNAT LIBRARY COMPONENTS --
+-- --
+-- A D A . S T R E A M S . S T O R A G E . B O U N D E D --
+-- --
+-- S p e c --
+-- --
+-- Copyright (C) 2020, 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/>. --
+-- --
+------------------------------------------------------------------------------
+
+pragma Ada_2020;
+package Ada.Streams.Storage.Bounded with Pure is
+
+ type Stream_Type (Max_Elements : Stream_Element_Count) is
+ new Storage_Stream_Type with private with
+ Default_Initial_Condition => Element_Count (Stream_Type) = 0;
+
+ overriding procedure Read
+ (Stream : in out Stream_Type; Item : out Stream_Element_Array;
+ Last : out Stream_Element_Offset)
+ with Post =>
+ (declare
+ Num_Read : constant Stream_Element_Count :=
+ Stream_Element_Count'Min
+ (Element_Count (Stream)'Old, Item'Length);
+ begin
+ Last = Num_Read + Item'First - 1
+ and
+ Element_Count (Stream) =
+ Element_Count (Stream)'Old - Num_Read);
+
+ overriding procedure Write
+ (Stream : in out Stream_Type; Item : Stream_Element_Array) with
+ Post => Element_Count (Stream) =
+ Element_Count (Stream)'Old + Item'Length;
+
+ overriding function Element_Count
+ (Stream : Stream_Type) return Stream_Element_Count with
+ Post => Element_Count'Result <= Stream.Max_Elements;
+
+ overriding procedure Clear (Stream : in out Stream_Type) with
+ Post => Element_Count (Stream) = 0;
+
+private
+
+ type Stream_Type (Max_Elements : Stream_Element_Count) is
+ new Storage_Stream_Type with record
+ Count : Stream_Element_Count := 0;
+ Elements : Stream_Element_Array (1 .. Max_Elements);
+ end record;
+
+end Ada.Streams.Storage.Bounded;
--- /dev/null
+------------------------------------------------------------------------------
+-- --
+-- GNAT LIBRARY COMPONENTS --
+-- --
+-- A D A . S T R E A M S . S T O R A G E . U N B O U N D E D --
+-- --
+-- B o d y --
+-- --
+-- Copyright (C) 2020, 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/>. --
+-- --
+------------------------------------------------------------------------------
+
+pragma Ada_2020;
+with Ada.Unchecked_Deallocation;
+package body Ada.Streams.Storage.Unbounded is
+
+ procedure Free is new Ada.Unchecked_Deallocation
+ (Elements_Type, Elements_Access);
+
+ --------------
+ -- Finalize --
+ --------------
+
+ overriding procedure Finalize (X : in out Controlled_Elements_Access) is
+ begin
+ if X.A /= Empty_Elements'Access then
+ Free (X.A);
+ end if;
+ end Finalize;
+
+ ----------
+ -- Read --
+ ----------
+
+ overriding procedure Read
+ (Stream : in out Stream_Type; Item : out Stream_Element_Array;
+ Last : out Stream_Element_Offset)
+ is
+ EA : Stream_Element_Array renames
+ Stream.Elements.A.EA (1 .. Element_Count (Stream));
+ begin
+ if Item'Length = 0 then
+ Last := Item'First - 1;
+
+ -- If the entire content of the stream fits in Item, then copy it and
+ -- clear the stream. This is likely the usual case.
+
+ elsif Element_Count (Stream) <= Item'Length then
+ Last := Item'First + Element_Count (Stream) - 1;
+ Item (Item'First .. Last) := EA;
+ Clear (Stream);
+
+ -- Otherwise, copy as much into Item as will fit. Then slide the
+ -- remaining part of the stream down, and compute the new Count.
+ -- We expect this to be the unusual case, so the cost of copying
+ -- the remaining part probably doesn't matter.
+
+ else
+ Last := Item'Last;
+
+ declare
+ New_Count : constant Stream_Element_Count :=
+ Element_Count (Stream) - Item'Length;
+ begin
+ Item := EA (1 .. Item'Length);
+ EA (1 .. New_Count) :=
+ EA (Element_Count (Stream) - New_Count + 1 ..
+ Element_Count (Stream));
+ Stream.Count := New_Count;
+ end;
+ end if;
+ end Read;
+
+ -----------
+ -- Write --
+ -----------
+
+ overriding procedure Write
+ (Stream : in out Stream_Type; Item : Stream_Element_Array)
+ is
+ New_Count : constant Stream_Element_Count :=
+ Element_Count (Stream) + Item'Length;
+ begin
+ -- Check whether we need to grow the array. If so, then if the Stream is
+ -- empty, allocate a goodly amount. Otherwise double the length, for
+ -- amortized efficiency. In any case, we need to make sure it's at least
+ -- big enough for New_Count.
+
+ if New_Count > Stream.Elements.A.Last then
+ declare
+ New_Last : Stream_Element_Index :=
+ (if Stream.Elements.A.Last = 0 then 2**10 -- goodly amount
+ else Stream.Elements.A.Last * 2);
+ Old_Elements : Elements_Access := Stream.Elements.A;
+ begin
+ if New_Last < New_Count then
+ New_Last := New_Count;
+ end if;
+
+ Stream.Elements.A := new Elements_Type (Last => New_Last);
+
+ if Old_Elements /= Empty_Elements'Access then
+ Stream.Elements.A.EA (Old_Elements.EA'Range) := Old_Elements.EA;
+ Free (Old_Elements);
+ end if;
+ end;
+ end if;
+
+ Stream.Elements.A.EA (Element_Count (Stream) + 1 .. New_Count) := Item;
+ Stream.Count := New_Count;
+ end Write;
+
+ -------------------
+ -- Element_Count --
+ -------------------
+
+ overriding function Element_Count
+ (Stream : Stream_Type) return Stream_Element_Count
+ is
+ begin
+ return Stream.Count;
+ end Element_Count;
+
+ -----------
+ -- Clear --
+ -----------
+
+ overriding procedure Clear (Stream : in out Stream_Type) is
+ begin
+ Stream.Count := 0;
+ -- We don't free Stream.Elements here, because we want to reuse it if
+ -- there are more Write calls.
+ end Clear;
+
+end Ada.Streams.Storage.Unbounded;
--- /dev/null
+------------------------------------------------------------------------------
+-- --
+-- GNAT LIBRARY COMPONENTS --
+-- --
+-- A D A . S T R E A M S . S T O R A G E . U N B O U N D E D --
+-- --
+-- S p e c --
+-- --
+-- Copyright (C) 2020, 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/>. --
+-- --
+------------------------------------------------------------------------------
+
+pragma Ada_2020;
+private with Ada.Finalization;
+package Ada.Streams.Storage.Unbounded with Preelaborate is
+
+ type Stream_Type is new Storage_Stream_Type with private with
+ Default_Initial_Condition => Element_Count (Stream_Type) = 0;
+
+ overriding procedure Read
+ (Stream : in out Stream_Type; Item : out Stream_Element_Array;
+ Last : out Stream_Element_Offset)
+ with Post =>
+ (declare
+ Num_Read : constant Stream_Element_Count :=
+ Stream_Element_Count'Min
+ (Element_Count (Stream)'Old, Item'Length);
+ begin
+ Last = Num_Read + Item'First - 1
+ and
+ Element_Count (Stream) =
+ Element_Count (Stream)'Old - Num_Read);
+
+ overriding procedure Write
+ (Stream : in out Stream_Type; Item : Stream_Element_Array) with
+ Post => Element_Count (Stream) =
+ Element_Count (Stream)'Old + Item'Length;
+
+ overriding function Element_Count
+ (Stream : Stream_Type) return Stream_Element_Count;
+
+ overriding procedure Clear (Stream : in out Stream_Type) with
+ Post => Element_Count (Stream) = 0;
+
+private
+
+ subtype Stream_Element_Index is Stream_Element_Count
+ range 1 .. Stream_Element_Count'Last;
+
+ type Elements_Type (Last : Stream_Element_Count) is limited record
+ EA : Stream_Element_Array (1 .. Last);
+ end record;
+
+ Empty_Elements : aliased Elements_Type := (Last => 0, EA => (others => <>));
+
+ type Elements_Access is access all Elements_Type;
+
+ type Controlled_Elements_Access is
+ new Finalization.Limited_Controlled with record
+ A : Elements_Access;
+ end record;
+
+ overriding procedure Finalize (X : in out Controlled_Elements_Access);
+
+ type Stream_Type is new Storage_Stream_Type with record
+ Elements : Controlled_Elements_Access :=
+ (Finalization.Limited_Controlled with A => Empty_Elements'Access);
+ Count : Stream_Element_Count := 0;
+ end record;
+
+end Ada.Streams.Storage.Unbounded;
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