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1 ------------------------------------------------------------------------------
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2 -- --
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3 -- GNAT RUN-TIME COMPONENTS --
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4 -- --
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5 -- A D A . T E X T _ I O . E N U M E R A T I O N _ I O --
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6 -- --
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7 -- B o d y --
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8 -- --
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9 -- Copyright (C) 1992-2017, Free Software Foundation, Inc. --
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10 -- --
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11 -- GNAT is free software; you can redistribute it and/or modify it under --
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12 -- terms of the GNU General Public License as published by the Free Soft- --
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13 -- ware Foundation; either version 3, or (at your option) any later ver- --
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14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
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17 -- --
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18 -- As a special exception under Section 7 of GPL version 3, you are granted --
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19 -- additional permissions described in the GCC Runtime Library Exception, --
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20 -- version 3.1, as published by the Free Software Foundation. --
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21 -- --
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22 -- You should have received a copy of the GNU General Public License and --
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23 -- a copy of the GCC Runtime Library Exception along with this program; --
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24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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25 -- <http://www.gnu.org/licenses/>. --
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26 -- --
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27 -- GNAT was originally developed by the GNAT team at New York University. --
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28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
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29 -- --
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30 ------------------------------------------------------------------------------
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31
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32 with Ada.Text_IO.Enumeration_Aux;
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33
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34 package body Ada.Text_IO.Enumeration_IO is
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35
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36 package Aux renames Ada.Text_IO.Enumeration_Aux;
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37
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38 ---------
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39 -- Get --
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40 ---------
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41
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42 procedure Get (File : File_Type; Item : out Enum) is
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43 Buf : String (1 .. Enum'Width + 1);
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44 Buflen : Natural;
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45
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46 begin
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47 Aux.Get_Enum_Lit (File, Buf, Buflen);
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48
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49 declare
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50 Buf_Str : String renames Buf (1 .. Buflen);
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51 pragma Unsuppress (Range_Check);
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52 begin
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53 Item := Enum'Value (Buf_Str);
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54 end;
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55
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56 exception
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57 when Constraint_Error => raise Data_Error;
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58 end Get;
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59
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60 procedure Get (Item : out Enum) is
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61 pragma Unsuppress (Range_Check);
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62 begin
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63 Get (Current_In, Item);
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64 end Get;
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65
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66 procedure Get
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67 (From : String;
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68 Item : out Enum;
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69 Last : out Positive)
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70 is
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71 Start : Natural;
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72
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73 begin
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74 Aux.Scan_Enum_Lit (From, Start, Last);
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75
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76 declare
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77 From_Str : String renames From (Start .. Last);
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78 pragma Unsuppress (Range_Check);
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79 begin
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80 Item := Enum'Value (From_Str);
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81 end;
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82
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83 exception
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84 when Constraint_Error => raise Data_Error;
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85 end Get;
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86
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87 ---------
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88 -- Put --
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89 ---------
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90
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91 procedure Put
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92 (File : File_Type;
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93 Item : Enum;
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94 Width : Field := Default_Width;
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95 Set : Type_Set := Default_Setting)
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96 is
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97 begin
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98 -- Ensure that Item is valid before attempting to retrieve the Image, to
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99 -- prevent the possibility of out-of-bounds addressing of index or image
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100 -- tables. Units in the run-time library are normally compiled with
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101 -- checks suppressed, which includes instantiated generics.
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102
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103 if not Item'Valid then
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104 raise Constraint_Error with "invalid enumeration value";
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105 end if;
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106
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107 Aux.Put (File, Enum'Image (Item), Width, Set);
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108 end Put;
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109
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110 procedure Put
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111 (Item : Enum;
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112 Width : Field := Default_Width;
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113 Set : Type_Set := Default_Setting)
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114 is
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115 begin
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116 Put (Current_Out, Item, Width, Set);
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117 end Put;
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118
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119 procedure Put
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120 (To : out String;
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121 Item : Enum;
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122 Set : Type_Set := Default_Setting)
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123 is
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124 begin
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125 -- Ensure that Item is valid before attempting to retrieve the Image, to
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126 -- prevent the possibility of out-of-bounds addressing of index or image
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127 -- tables. Units in the run-time library are normally compiled with
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128 -- checks suppressed, which includes instantiated generics.
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129
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130 if not Item'Valid then
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131 raise Constraint_Error with "invalid enumeration value";
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132 end if;
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133
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134 Aux.Puts (To, Enum'Image (Item), Set);
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135 end Put;
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136
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137 end Ada.Text_IO.Enumeration_IO;
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