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Diffstat (limited to 'gcc/ada/s-sopco4.adb')
| -rw-r--r-- | gcc/ada/s-sopco4.adb | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/gcc/ada/s-sopco4.adb b/gcc/ada/s-sopco4.adb new file mode 100644 index 00000000000..136f7e4d9b3 --- /dev/null +++ b/gcc/ada/s-sopco4.adb @@ -0,0 +1,64 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME COMPONENTS -- +-- -- +-- S Y S T E M . S T R I N G _ O P S _ C O N C A T _ 4 -- +-- -- +-- B o d y -- +-- -- +-- $Revision: 1.1 $ -- +-- -- +-- 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- -- +-- 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. -- +-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). -- +-- -- +------------------------------------------------------------------------------ + +package body System.String_Ops_Concat_4 is + + ------------------ + -- Str_Concat_4 -- + ------------------ + + function Str_Concat_4 (S1, S2, S3, S4 : String) return String is + begin + if S1'Length <= 0 then + return S2 & S3 & S4; + + else + declare + L12 : constant Natural := S1'Length + S2'Length; + L13 : constant Natural := L12 + S3'Length; + L14 : constant Natural := L13 + S4'Length; + R : String (S1'First .. S1'First + L14 - 1); + + 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 .. R'Last) := S4; + return R; + end; + end if; + end Str_Concat_4; + +end System.String_Ops_Concat_4; |