1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT RUN-TIME COMPONENTS                         --
4--                                                                          --
5--                  S Y S T E M . I M G _ E N U M _ N E W                   --
6--                                                                          --
7--                                 B o d y                                  --
8--                                                                          --
9--          Copyright (C) 2000-2018, 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 Ada.Unchecked_Conversion;
35
36package body System.Img_Enum_New is
37
38   -------------------------
39   -- Image_Enumeration_8 --
40   -------------------------
41
42   procedure Image_Enumeration_8
43     (Pos     : Natural;
44      S       : in out String;
45      P       : out Natural;
46      Names   : String;
47      Indexes : System.Address)
48   is
49      pragma Assert (S'First = 1);
50
51      type Natural_8 is range 0 .. 2 ** 7 - 1;
52      type Index_Table is array (Natural) of Natural_8;
53      type Index_Table_Ptr is access Index_Table;
54
55      function To_Index_Table_Ptr is
56        new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
57
58      IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
59
60      Start : constant Natural := Natural (IndexesT (Pos));
61      Next  : constant Natural := Natural (IndexesT (Pos + 1));
62
63   begin
64      S (1 .. Next - Start) := Names (Start .. Next - 1);
65      P := Next - Start;
66   end Image_Enumeration_8;
67
68   --------------------------
69   -- Image_Enumeration_16 --
70   --------------------------
71
72   procedure Image_Enumeration_16
73     (Pos     : Natural;
74      S       : in out String;
75      P       : out Natural;
76      Names   : String;
77      Indexes : System.Address)
78   is
79      pragma Assert (S'First = 1);
80
81      type Natural_16 is range 0 .. 2 ** 15 - 1;
82      type Index_Table is array (Natural) of Natural_16;
83      type Index_Table_Ptr is access Index_Table;
84
85      function To_Index_Table_Ptr is
86        new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
87
88      IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
89
90      Start : constant Natural := Natural (IndexesT (Pos));
91      Next  : constant Natural := Natural (IndexesT (Pos + 1));
92
93   begin
94      S (1 .. Next - Start) := Names (Start .. Next - 1);
95      P := Next - Start;
96   end Image_Enumeration_16;
97
98   --------------------------
99   -- Image_Enumeration_32 --
100   --------------------------
101
102   procedure Image_Enumeration_32
103     (Pos     : Natural;
104      S       : in out String;
105      P       : out Natural;
106      Names   : String;
107      Indexes : System.Address)
108   is
109      pragma Assert (S'First = 1);
110
111      type Natural_32 is range 0 .. 2 ** 31 - 1;
112      type Index_Table is array (Natural) of Natural_32;
113      type Index_Table_Ptr is access Index_Table;
114
115      function To_Index_Table_Ptr is
116        new Ada.Unchecked_Conversion (System.Address, Index_Table_Ptr);
117
118      IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes);
119
120      Start : constant Natural := Natural (IndexesT (Pos));
121      Next  : constant Natural := Natural (IndexesT (Pos + 1));
122
123   begin
124      S (1 .. Next - Start) := Names (Start .. Next - 1);
125      P := Next - Start;
126   end Image_Enumeration_32;
127
128end System.Img_Enum_New;
129