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------------------------------------------------------------------------------
-- --
-- GNAT RUNTIME COMPONENTS --
-- --
-- A D A . S T R I N G S . W I D E _ W I D E _ U N B O U N D E D . A U X --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2005, 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 2, 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. --
-- --
-- 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. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
package body Ada.Strings.Wide_Wide_Unbounded.Aux is
--------------------------
-- Get_Wide_Wide_String --
--------------------------
function Get_Wide_Wide_String
(U : Unbounded_Wide_Wide_String) return Wide_Wide_String_Access
is
begin
if U.Last = U.Reference'Length then
return U.Reference;
else
declare
type Unbounded_Wide_Wide_String_Access is
access all Unbounded_Wide_Wide_String;
U_Ptr : constant Unbounded_Wide_Wide_String_Access :=
U'Unrestricted_Access;
-- Unbounded_Wide_Wide_String is a controlled type which is always
-- passed by copy it is always safe to take the pointer to such
-- object here. This pointer is used to set the U.Reference value
-- which would not be possible otherwise as U is read-only.
Old : Wide_Wide_String_Access := U.Reference;
begin
U_Ptr.Reference :=
new Wide_Wide_String'(U.Reference (1 .. U.Last));
Free (Old);
return U.Reference;
end;
end if;
end Get_Wide_Wide_String;
--------------------------
-- Set_Wide_Wide_String --
--------------------------
procedure Set_Wide_Wide_String
(UP : in out Unbounded_Wide_Wide_String;
S : Wide_Wide_String)
is
begin
if UP.Last = S'Length then
UP.Reference.all := S;
else
declare
subtype String_1 is Wide_Wide_String (1 .. S'Length);
Tmp : Wide_Wide_String_Access;
begin
Tmp := new Wide_Wide_String'(String_1 (S));
Finalize (UP);
UP.Reference := Tmp;
UP.Last := UP.Reference'Length;
end;
end if;
end Set_Wide_Wide_String;
procedure Set_Wide_Wide_String
(UP : in out Unbounded_Wide_Wide_String;
S : Wide_Wide_String_Access)
is
begin
Finalize (UP);
UP.Reference := S;
UP.Last := UP.Reference'Length;
end Set_Wide_Wide_String;
end Ada.Strings.Wide_Wide_Unbounded.Aux;
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