1------------------------------------------------------------------------------
2--                                                                          --
3--                 GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS                 --
4--                                                                          --
5--                      S Y S T E M . C O N C A T _ 4                       --
6--                                                                          --
7--                                 B o d y                                  --
8--                                                                          --
9--            Copyright (C) 2008-2018, 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 3,  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.                                     --
17--                                                                          --
18-- As a special exception under Section 7 of GPL version 3, you are granted --
19-- additional permissions described in the GCC Runtime Library Exception,   --
20-- version 3.1, as published by the Free Software Foundation.               --
21--                                                                          --
22-- You should have received a copy of the GNU General Public License and    --
23-- a copy of the GCC Runtime Library Exception along with this program;     --
24-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
25-- <http://www.gnu.org/licenses/>.                                          --
26--                                                                          --
27-- GNAT was originally developed  by the GNAT team at  New York University. --
28-- Extensive contributions were provided by Ada Core Technologies Inc.      --
29--                                                                          --
30------------------------------------------------------------------------------
31
32pragma Compiler_Unit_Warning;
33
34with System.Concat_3;
35
36package body System.Concat_4 is
37
38   pragma Suppress (All_Checks);
39
40   ------------------
41   -- Str_Concat_4 --
42   ------------------
43
44   procedure Str_Concat_4 (R : out String; S1, S2, S3, S4 : String) is
45      F, L : Natural;
46
47   begin
48      F := R'First;
49      L := F + S1'Length - 1;
50      R (F .. L) := S1;
51
52      F := L + 1;
53      L := F + S2'Length - 1;
54      R (F .. L) := S2;
55
56      F := L + 1;
57      L := F + S3'Length - 1;
58      R (F .. L) := S3;
59
60      F := L + 1;
61      L := R'Last;
62      R (F .. L) := S4;
63   end Str_Concat_4;
64
65   -------------------------
66   -- Str_Concat_Bounds_4 --
67   -------------------------
68
69   procedure Str_Concat_Bounds_4
70     (Lo, Hi         : out Natural;
71      S1, S2, S3, S4 : String)
72   is
73   begin
74      System.Concat_3.Str_Concat_Bounds_3 (Lo, Hi, S2, S3, S4);
75
76      if S1 /= "" then
77         Hi := S1'Last + Hi - Lo + 1;
78         Lo := S1'First;
79      end if;
80   end Str_Concat_Bounds_4;
81
82end System.Concat_4;
83