1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT RUN-TIME COMPONENTS                         --
4--                                                                          --
5--                S Y S T E M . B O U N D E D _ S T R I N G S               --
6--                                                                          --
7--                                 B o d y                                  --
8--                                                                          --
9--                       Copyright (C) 2016-2018, AdaCore                   --
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
32with System.Storage_Elements;
33
34package body System.Bounded_Strings is
35
36   ------------
37   -- Append --
38   ------------
39
40   procedure Append (X : in out Bounded_String; C : Character) is
41   begin
42      --  If we have too many characters to fit, simply drop them
43
44      if X.Length < X.Max_Length then
45         X.Length           := X.Length + 1;
46         X.Chars (X.Length) := C;
47      end if;
48   end Append;
49
50   procedure Append (X : in out Bounded_String; S : String) is
51   begin
52      for C of S loop
53         Append (X, C);
54      end loop;
55   end Append;
56
57   --------------------
58   -- Append_Address --
59   --------------------
60
61   procedure Append_Address (X : in out Bounded_String; A : Address)
62   is
63      S : String (1 .. 18);
64      P : Natural;
65      use System.Storage_Elements;
66      N : Integer_Address;
67
68      H : constant array (Integer range 0 .. 15) of Character :=
69        "0123456789abcdef";
70   begin
71      P := S'Last;
72      N := To_Integer (A);
73      loop
74         S (P) := H (Integer (N mod 16));
75         P := P - 1;
76         N := N / 16;
77         exit when N = 0;
78      end loop;
79
80      S (P - 1) := '0';
81      S (P) := 'x';
82
83      Append (X, S (P - 1 .. S'Last));
84   end Append_Address;
85
86   -------------
87   -- Is_Full --
88   -------------
89
90   function Is_Full (X : Bounded_String) return Boolean is
91   begin
92      return X.Length >= X.Max_Length;
93   end Is_Full;
94
95   ---------------
96   -- To_String --
97   ---------------
98
99   function To_String (X : Bounded_String) return String is
100   begin
101      return X.Chars (1 .. X.Length);
102   end To_String;
103
104end System.Bounded_Strings;
105