File : s-sopco5.adb
------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME COMPONENTS --
-- --
5 -- S Y S T E M . S T R I N G _ O P S _ C O N C A T _ 5 --
-- --
-- B o d y --
-- --
-- $Revision: 1.2 $ --
10 -- --
-- Copyright (C) 1992-1998, 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- --
15 -- 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 --
20 -- 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 --
25 -- 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. --
30 -- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
-- --
------------------------------------------------------------------------------
35
package body System.String_Ops_Concat_5 is
------------------
-- Str_Concat_5 --
40 ------------------
function Str_Concat_5 (S1, S2, S3, S4, S5 : String) return String is
begin
if S1'Length <= 0 then
45 return S2 & S3 & S4 & S5;
else
declare
L12 : constant Natural := S1'Length + S2'Length;
50 L13 : constant Natural := L12 + S3'Length;
L14 : constant Natural := L13 + S4'Length;
L15 : constant Natural := L14 + S5'Length;
R : String (S1'First .. S1'First + L15 - 1);
55 begin
R (S1'First .. S1'Last) := S1;
R (S1'Last + 1 .. S1'First + L12 - 1) := S2;
R (S1'First + L12 .. S1'First + L13 - 1) := S3;
R (S1'First + L13 .. S1'First + L14 - 1) := S4;
60 R (S1'First + L14 .. R'Last) := S5;
return R;
end;
end if;
end Str_Concat_5;
65
end System.String_Ops_Concat_5;