gcc/ada/a-stunau.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUNTIME COMPONENTS                          --
   4 --                                                                          --
   5 --            A D A . S T R I N G S . U N B O U N D E D . A U X             --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-1998, Free Software Foundation, Inc.         --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  19 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  20 -- MA 02111-1307, USA.                                                      --
  21 --                                                                          --
  22 -- As a special exception,  if other files  instantiate  generics from this --
  23 -- unit, or you link  this unit with other files  to produce an executable, --
  24 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  25 -- covered  by the  GNU  General  Public  License.  This exception does not --
  26 -- however invalidate  any other reasons why  the executable file  might be --
  27 -- covered by the  GNU Public License.                                      --
  28 --                                                                          --
  29 -- GNAT was originally developed  by the GNAT team at  New York University. --
  30 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  31 --                                                                          --
  32 ------------------------------------------------------------------------------
  33
  34 package body Ada.Strings.Unbounded.Aux is
  35
  36    ----------------
  37    -- Get_String --
  38    ----------------
  39
  40    function Get_String (U  : Unbounded_String) return String_Access is
  41    begin
  42       return U.Reference;
  43    end Get_String;
  44
  45    ----------------
  46    -- Set_String --
  47    ----------------
  48
  49    procedure Set_String (UP : in out Unbounded_String; S : String) is
  50    begin
  51       if UP.Reference'Length = S'Length then
  52          UP.Reference.all := S;
  53
  54       else
  55          declare
  56             subtype String_1 is String (1 .. S'Length);
  57             Tmp : String_Access;
  58
  59          begin
  60             Tmp := new String'(String_1 (S));
  61             Finalize (UP);
  62             UP.Reference := Tmp;
  63          end;
  64       end if;
  65    end Set_String;
  66
  67    procedure Set_String (UP : in out Unbounded_String; S : String_Access) is
  68    begin
  69       Finalize (UP);
  70       UP.Reference := S;
  71    end Set_String;
  72
  73 end Ada.Strings.Unbounded.Aux;