------------------------------------------------------------------------------
-- --
--- GNAT RUNTIME COMPONENTS --
+-- GNAT RUN-TIME COMPONENTS --
-- --
--- A D A . S T R I N G S . U N B O U N D E D --
+-- A D A . S T R I N G S . U N B O U N D E D --
-- --
-- S p e c --
-- --
--- Copyright (C) 1992-2005 Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2009, 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 --
-- --
-- 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 2, 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- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
--- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
--- for more details. You should have received a copy of the GNU General --
--- Public License distributed with GNAT; see file COPYING. If not, write --
--- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
+-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
--- As a special exception, if other files instantiate generics from this --
--- unit, or you link this unit with other files to produce an executable, --
--- this unit does not by itself cause the resulting executable to be --
--- covered by the GNU General Public License. This exception does not --
--- however invalidate any other reasons why the executable file might be --
--- covered by the GNU Public License. --
+-- 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/>. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
with Ada.Finalization;
package Ada.Strings.Unbounded is
-pragma Preelaborate (Unbounded);
+ pragma Preelaborate;
type Unbounded_String is private;
+ pragma Preelaborable_Initialization (Unbounded_String);
Null_Unbounded_String : constant Unbounded_String;
Reference : String_Access := Null_String'Access;
Last : Natural := 0;
end record;
-
-- The Unbounded_String is using a buffered implementation to increase
-- speed of the Append/Delete/Insert procedures. The Reference string
-- pointer above contains the current string value and extra room at the
-- Reference (1 .. Last).
pragma Stream_Convert (Unbounded_String, To_Unbounded, To_String);
+ -- Provide stream routines without dragging in Ada.Streams
pragma Finalize_Storage_Only (Unbounded_String);
+ -- Finalization is required only for freeing storage
procedure Initialize (Object : in out Unbounded_String);
procedure Adjust (Object : in out Unbounded_String);
procedure Finalize (Object : in out Unbounded_String);
- -- Note: the following declaration is illegal since library level
- -- controlled objects are not allowed in preelaborated units. See
- -- AI-161 for a discussion of this issue and an attempt to address it.
- -- Meanwhile, what happens in GNAT is that this check is omitted for
- -- internal implementation units (see check in sem_cat.adb).
+ procedure Realloc_For_Chunk
+ (Source : in out Unbounded_String;
+ Chunk_Size : Natural);
+ pragma Inline (Realloc_For_Chunk);
+ -- Adjust the size allocated for the string. Add at least Chunk_Size so it
+ -- is safe to add a string of this size at the end of the current content.
+ -- The real size allocated for the string is Chunk_Size + x of the current
+ -- string size. This buffered handling makes the Append unbounded string
+ -- routines very fast. This spec is in the private part so that it can be
+ -- accessed from children (e.g. from Unbounded.Text_IO).
Null_Unbounded_String : constant Unbounded_String :=
- (AF.Controlled with Reference => Null_String'Access, Last => 0);
-
+ (AF.Controlled with
+ Reference => Null_String'Access,
+ Last => 0);
end Ada.Strings.Unbounded;
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