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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 . I N T E G E R _ A U X --
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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.Generic_Aux; use Ada.Text_IO.Generic_Aux;
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33
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34 with System.Img_BIU; use System.Img_BIU;
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35 with System.Img_Int; use System.Img_Int;
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36 with System.Img_LLB; use System.Img_LLB;
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37 with System.Img_LLI; use System.Img_LLI;
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38 with System.Img_LLW; use System.Img_LLW;
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39 with System.Img_WIU; use System.Img_WIU;
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40 with System.Val_Int; use System.Val_Int;
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41 with System.Val_LLI; use System.Val_LLI;
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42
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43 package body Ada.Text_IO.Integer_Aux is
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44
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45 -----------------------
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46 -- Local Subprograms --
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47 -----------------------
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48
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49 procedure Load_Integer
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50 (File : File_Type;
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51 Buf : out String;
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52 Ptr : in out Natural);
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53 -- This is an auxiliary routine that is used to load a possibly signed
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54 -- integer literal value from the input file into Buf, starting at Ptr + 1.
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55 -- On return, Ptr is set to the last character stored.
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56
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57 -------------
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58 -- Get_Int --
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59 -------------
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60
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61 procedure Get_Int
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62 (File : File_Type;
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63 Item : out Integer;
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64 Width : Field)
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65 is
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66 Buf : String (1 .. Field'Last);
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67 Ptr : aliased Integer := 1;
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68 Stop : Integer := 0;
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69
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70 begin
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71 if Width /= 0 then
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72 Load_Width (File, Width, Buf, Stop);
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73 String_Skip (Buf, Ptr);
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74 else
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75 Load_Integer (File, Buf, Stop);
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76 end if;
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77
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78 Item := Scan_Integer (Buf, Ptr'Access, Stop);
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79 Check_End_Of_Field (Buf, Stop, Ptr, Width);
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80 end Get_Int;
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81
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82 -------------
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83 -- Get_LLI --
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84 -------------
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85
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86 procedure Get_LLI
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87 (File : File_Type;
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88 Item : out Long_Long_Integer;
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89 Width : Field)
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90 is
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91 Buf : String (1 .. Field'Last);
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92 Ptr : aliased Integer := 1;
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93 Stop : Integer := 0;
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94
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95 begin
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96 if Width /= 0 then
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97 Load_Width (File, Width, Buf, Stop);
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98 String_Skip (Buf, Ptr);
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99 else
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100 Load_Integer (File, Buf, Stop);
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101 end if;
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102
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103 Item := Scan_Long_Long_Integer (Buf, Ptr'Access, Stop);
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104 Check_End_Of_Field (Buf, Stop, Ptr, Width);
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105 end Get_LLI;
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106
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107 --------------
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108 -- Gets_Int --
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109 --------------
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110
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111 procedure Gets_Int
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112 (From : String;
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113 Item : out Integer;
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114 Last : out Positive)
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115 is
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116 Pos : aliased Integer;
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117
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118 begin
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119 String_Skip (From, Pos);
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120 Item := Scan_Integer (From, Pos'Access, From'Last);
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121 Last := Pos - 1;
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122
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123 exception
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124 when Constraint_Error =>
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125 raise Data_Error;
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126 end Gets_Int;
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127
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128 --------------
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129 -- Gets_LLI --
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130 --------------
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131
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132 procedure Gets_LLI
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133 (From : String;
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134 Item : out Long_Long_Integer;
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135 Last : out Positive)
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136 is
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137 Pos : aliased Integer;
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138
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139 begin
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140 String_Skip (From, Pos);
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141 Item := Scan_Long_Long_Integer (From, Pos'Access, From'Last);
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142 Last := Pos - 1;
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143
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144 exception
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145 when Constraint_Error =>
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146 raise Data_Error;
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147 end Gets_LLI;
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148
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149 ------------------
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150 -- Load_Integer --
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151 ------------------
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152
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153 procedure Load_Integer
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154 (File : File_Type;
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155 Buf : out String;
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156 Ptr : in out Natural)
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157 is
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158 Hash_Loc : Natural;
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159 Loaded : Boolean;
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160
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161 begin
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162 Load_Skip (File);
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163 Load (File, Buf, Ptr, '+', '-');
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164
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165 Load_Digits (File, Buf, Ptr, Loaded);
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166
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167 if Loaded then
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168
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169 -- Deal with based literal. We recognize either the standard '#' or
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170 -- the allowed alternative replacement ':' (see RM J.2(3)).
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171
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172 Load (File, Buf, Ptr, '#', ':', Loaded);
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173
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174 if Loaded then
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175 Hash_Loc := Ptr;
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176 Load_Extended_Digits (File, Buf, Ptr);
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177 Load (File, Buf, Ptr, Buf (Hash_Loc));
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178 end if;
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179
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180 -- Deal with exponent
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181
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182 Load (File, Buf, Ptr, 'E', 'e', Loaded);
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183
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184 if Loaded then
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185
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186 -- Note: it is strange to allow a minus sign, since the syntax
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187 -- does not, but that is what ACVC test CE3704F, case (6) wants.
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188
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189 Load (File, Buf, Ptr, '+', '-');
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190 Load_Digits (File, Buf, Ptr);
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191 end if;
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192 end if;
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193 end Load_Integer;
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194
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195 -------------
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196 -- Put_Int --
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197 -------------
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198
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199 procedure Put_Int
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200 (File : File_Type;
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201 Item : Integer;
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202 Width : Field;
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203 Base : Number_Base)
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204 is
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205 Buf : String (1 .. Integer'Max (Field'Last, Width));
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206 Ptr : Natural := 0;
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207
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208 begin
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209 if Base = 10 and then Width = 0 then
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210 Set_Image_Integer (Item, Buf, Ptr);
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211 elsif Base = 10 then
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212 Set_Image_Width_Integer (Item, Width, Buf, Ptr);
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213 else
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214 Set_Image_Based_Integer (Item, Base, Width, Buf, Ptr);
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215 end if;
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216
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217 Put_Item (File, Buf (1 .. Ptr));
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218 end Put_Int;
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219
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220 -------------
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221 -- Put_LLI --
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222 -------------
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223
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224 procedure Put_LLI
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225 (File : File_Type;
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226 Item : Long_Long_Integer;
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227 Width : Field;
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228 Base : Number_Base)
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229 is
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230 Buf : String (1 .. Integer'Max (Field'Last, Width));
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231 Ptr : Natural := 0;
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232
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233 begin
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234 if Base = 10 and then Width = 0 then
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235 Set_Image_Long_Long_Integer (Item, Buf, Ptr);
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236 elsif Base = 10 then
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237 Set_Image_Width_Long_Long_Integer (Item, Width, Buf, Ptr);
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238 else
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239 Set_Image_Based_Long_Long_Integer (Item, Base, Width, Buf, Ptr);
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240 end if;
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241
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242 Put_Item (File, Buf (1 .. Ptr));
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243 end Put_LLI;
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244
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245 --------------
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246 -- Puts_Int --
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247 --------------
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248
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249 procedure Puts_Int
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250 (To : out String;
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251 Item : Integer;
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252 Base : Number_Base)
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253 is
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254 Buf : String (1 .. Integer'Max (Field'Last, To'Length));
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255 Ptr : Natural := 0;
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256
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257 begin
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258 if Base = 10 then
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259 Set_Image_Width_Integer (Item, To'Length, Buf, Ptr);
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260 else
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261 Set_Image_Based_Integer (Item, Base, To'Length, Buf, Ptr);
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262 end if;
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263
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264 if Ptr > To'Length then
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265 raise Layout_Error;
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266 else
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267 To (To'First .. To'First + Ptr - 1) := Buf (1 .. Ptr);
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268 end if;
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269 end Puts_Int;
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270
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271 --------------
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272 -- Puts_LLI --
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273 --------------
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274
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275 procedure Puts_LLI
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276 (To : out String;
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277 Item : Long_Long_Integer;
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278 Base : Number_Base)
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279 is
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280 Buf : String (1 .. Integer'Max (Field'Last, To'Length));
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281 Ptr : Natural := 0;
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282
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283 begin
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284 if Base = 10 then
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285 Set_Image_Width_Long_Long_Integer (Item, To'Length, Buf, Ptr);
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286 else
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287 Set_Image_Based_Long_Long_Integer (Item, Base, To'Length, Buf, Ptr);
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288 end if;
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289
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290 if Ptr > To'Length then
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291 raise Layout_Error;
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292 else
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293 To (To'First .. To'First + Ptr - 1) := Buf (1 .. Ptr);
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294 end if;
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295 end Puts_LLI;
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296
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297 end Ada.Text_IO.Integer_Aux;
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