File : a-tienio.adb
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT RUN-TIME COMPONENTS --
4 -- --
5 -- A D A . T E X T _ I O . E N U M E R A T I O N _ I O --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 1992-2015, 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 -- --
19 -- --
20 -- --
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 with Ada.Text_IO.Enumeration_Aux;
33
34 package body Ada.Text_IO.Enumeration_IO is
35
36 package Aux renames Ada.Text_IO.Enumeration_Aux;
37
38 ---------
39 -- Get --
40 ---------
41
42 procedure Get (File : File_Type; Item : out Enum) is
43 Buf : String (1 .. Enum'Width + 1);
44 Buflen : Natural;
45
46 begin
47 Aux.Get_Enum_Lit (File, Buf, Buflen);
48
49 declare
50 Buf_Str : String renames Buf (1 .. Buflen);
51 pragma Unsuppress (Range_Check);
52 begin
53 Item := Enum'Value (Buf_Str);
54 end;
55
56 exception
57 when Constraint_Error => raise Data_Error;
58 end Get;
59
60 procedure Get (Item : out Enum) is
61 pragma Unsuppress (Range_Check);
62 begin
63 Get (Current_In, Item);
64 end Get;
65
66 procedure Get
67 (From : String;
68 Item : out Enum;
69 Last : out Positive)
70 is
71 Start : Natural;
72
73 begin
74 Aux.Scan_Enum_Lit (From, Start, Last);
75
76 declare
77 From_Str : String renames From (Start .. Last);
78 pragma Unsuppress (Range_Check);
79 begin
80 Item := Enum'Value (From_Str);
81 end;
82
83 exception
84 when Constraint_Error => raise Data_Error;
85 end Get;
86
87 ---------
88 -- Put --
89 ---------
90
91 procedure Put
92 (File : File_Type;
93 Item : Enum;
94 Width : Field := Default_Width;
95 Set : Type_Set := Default_Setting)
96 is
97 begin
98 -- Ensure that Item is valid before attempting to retrieve the Image, to
99 -- prevent the possibility of out-of-bounds addressing of index or image
100 -- tables. Units in the run-time library are normally compiled with
101 -- checks suppressed, which includes instantiated generics.
102
103 if not Item'Valid then
104 raise Constraint_Error with "invalid enumeration value";
105 end if;
106
107 Aux.Put (File, Enum'Image (Item), Width, Set);
108 end Put;
109
110 procedure Put
111 (Item : Enum;
112 Width : Field := Default_Width;
113 Set : Type_Set := Default_Setting)
114 is
115 begin
116 Put (Current_Out, Item, Width, Set);
117 end Put;
118
119 procedure Put
120 (To : out String;
121 Item : Enum;
122 Set : Type_Set := Default_Setting)
123 is
124 begin
125 -- Ensure that Item is valid before attempting to retrieve the Image, to
126 -- prevent the possibility of out-of-bounds addressing of index or image
127 -- tables. Units in the run-time library are normally compiled with
128 -- checks suppressed, which includes instantiated generics.
129
130 if not Item'Valid then
131 raise Constraint_Error with "invalid enumeration value";
132 end if;
133
134 Aux.Puts (To, Enum'Image (Item), Set);
135 end Put;
136
137 end Ada.Text_IO.Enumeration_IO;