gcc/ada/s-conca2.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                 GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS                 --
   4 --                                                                          --
   5 --                      S Y S T E M . C O N C A T _ 2                       --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --            Copyright (C) 2008-2009, 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
  32 pragma Compiler_Unit;
  33
  34 package body System.Concat_2 is
  35
  36    pragma Suppress (All_Checks);
  37
  38    ------------------
  39    -- Str_Concat_2 --
  40    ------------------
  41
  42    procedure Str_Concat_2 (R : out String; S1, S2 : String) is
  43       F, L : Natural;
  44
  45    begin
  46       F := R'First;
  47       L := F + S1'Length - 1;
  48       R (F .. L) := S1;
  49
  50       F := L + 1;
  51       L := R'Last;
  52       R (F .. L) := S2;
  53    end Str_Concat_2;
  54
  55    -------------------------
  56    -- Str_Concat_Bounds_2 --
  57    -------------------------
  58
  59    procedure Str_Concat_Bounds_2
  60      (Lo, Hi : out Natural;
  61       S1, S2 : String)
  62    is
  63    begin
  64       if S1 = "" then
  65          Lo := S2'First;
  66          Hi := S2'Last;
  67       else
  68          Lo := S1'First;
  69          Hi := S1'Last + S2'Length;
  70       end if;
  71    end Str_Concat_Bounds_2;
  72
  73 end System.Concat_2;