1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
5 -- S Y S T E M . C O N C A T _ 2 --
9 -- Copyright (C) 2008-2013, Free Software Foundation, Inc. --
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. --
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. --
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/>. --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
30 ------------------------------------------------------------------------------
32 -- This package contains a procedure for runtime concatenation of two string
33 -- operands. It is used when we want to save space in the generated code.
35 pragma Compiler_Unit_Warning;
37 package System.Concat_2 is
39 procedure Str_Concat_2 (R : out String; S1, S2 : String);
40 -- Performs the operation R := S1 & S2. The bounds of R are known to be
41 -- correct (usually set by a call to the Str_Concat_Bounds_2 procedure
42 -- below), so no bounds checks are required, and it is known that none of
43 -- the input operands overlaps R. No assumptions can be made about the
44 -- lower bounds of any of the operands.
46 procedure Str_Concat_Bounds_2
47 (Lo, Hi : out Natural;
49 -- Assigns to Lo..Hi the bounds of the result of concatenating the two
50 -- given strings, following the rules in the RM regarding null operands.