gcc/ada/validsw.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                              V A L I D S W                               --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 2001-2020, 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.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
  19 -- http://www.gnu.org/licenses for a complete copy of the license.          --
  20 --                                                                          --
  21 -- GNAT was originally developed  by the GNAT team at  New York University. --
  22 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  23 --                                                                          --
  24 ------------------------------------------------------------------------------
  25
  26 with Opt;    use Opt;
  27 with Output; use Output;
  28
  29 package body Validsw is
  30
  31    ----------------------------------
  32    -- Reset_Validity_Check_Options --
  33    ----------------------------------
  34
  35    procedure Reset_Validity_Check_Options is
  36    begin
  37       Validity_Check_Components     := False;
  38       Validity_Check_Copies         := False;
  39       Validity_Check_Default        := False;
  40       Validity_Check_Floating_Point := False;
  41       Validity_Check_In_Out_Params  := False;
  42       Validity_Check_In_Params      := False;
  43       Validity_Check_Operands       := False;
  44       Validity_Check_Parameters     := False;
  45       Validity_Check_Returns        := False;
  46       Validity_Check_Subscripts     := False;
  47       Validity_Check_Tests          := False;
  48    end Reset_Validity_Check_Options;
  49
  50    ---------------------------------
  51    -- Save_Validity_Check_Options --
  52    ---------------------------------
  53
  54    procedure Save_Validity_Check_Options
  55      (Options : out Validity_Check_Options)
  56    is
  57       P : Natural := 0;
  58
  59       procedure Add (C : Character; S : Boolean);
  60       --  Add given character C to string if switch S is true
  61
  62       procedure Add (C : Character; S : Boolean) is
  63       begin
  64          if S then
  65             P := P + 1;
  66             Options (P) := C;
  67          end if;
  68       end Add;
  69
  70    --  Start of processing for Save_Validity_Check_Options
  71
  72    begin
  73       for K in Options'Range loop
  74          Options (K) := ' ';
  75       end loop;
  76
  77       Add ('e', Validity_Check_Components);
  78       Add ('c', Validity_Check_Copies);
  79       Add ('d', Validity_Check_Default);
  80       Add ('f', Validity_Check_Floating_Point);
  81       Add ('i', Validity_Check_In_Params);
  82       Add ('m', Validity_Check_In_Out_Params);
  83       Add ('o', Validity_Check_Operands);
  84       Add ('p', Validity_Check_Parameters);
  85       Add ('r', Validity_Check_Returns);
  86       Add ('s', Validity_Check_Subscripts);
  87       Add ('t', Validity_Check_Tests);
  88    end Save_Validity_Check_Options;
  89
  90    ----------------------------------------
  91    -- Set_Default_Validity_Check_Options --
  92    ----------------------------------------
  93
  94    procedure Set_Default_Validity_Check_Options is
  95    begin
  96       Reset_Validity_Check_Options;
  97       Set_Validity_Check_Options ("d");
  98    end Set_Default_Validity_Check_Options;
  99
 100    --------------------------------
 101    -- Set_Validity_Check_Options --
 102    --------------------------------
 103
 104    --  Version used when no error checking is required
 105
 106    procedure Set_Validity_Check_Options (Options : String) is
 107       OK : Boolean;
 108       EC : Natural;
 109       pragma Warnings (Off, OK);
 110       pragma Warnings (Off, EC);
 111    begin
 112       Set_Validity_Check_Options (Options, OK, EC);
 113    end Set_Validity_Check_Options;
 114
 115    --  Normal version with error checking
 116
 117    procedure Set_Validity_Check_Options
 118      (Options  : String;
 119       OK       : out Boolean;
 120       Err_Col  : out Natural)
 121    is
 122       J : Natural;
 123       C : Character;
 124
 125    begin
 126       J := Options'First;
 127       while J <= Options'Last loop
 128          C := Options (J);
 129          J := J + 1;
 130
 131          --  Turn on validity checking (gets turned off by Vn)
 132
 133          Validity_Checks_On := True;
 134
 135          case C is
 136             when 'c' =>
 137                Validity_Check_Copies         := True;
 138
 139             when 'd' =>
 140                Validity_Check_Default        := True;
 141
 142             when 'e' =>
 143                Validity_Check_Components     := True;
 144
 145             when 'f' =>
 146                Validity_Check_Floating_Point := True;
 147
 148             when 'i' =>
 149                Validity_Check_In_Params      := True;
 150
 151             when 'm' =>
 152                Validity_Check_In_Out_Params  := True;
 153
 154             when 'o' =>
 155                Validity_Check_Operands       := True;
 156
 157             when 'p' =>
 158                Validity_Check_Parameters     := True;
 159
 160             when 'r' =>
 161                Validity_Check_Returns        := True;
 162
 163             when 's' =>
 164                Validity_Check_Subscripts     := True;
 165
 166             when 't' =>
 167                Validity_Check_Tests          := True;
 168
 169             when 'C' =>
 170                Validity_Check_Copies         := False;
 171
 172             when 'D' =>
 173                Validity_Check_Default        := False;
 174
 175             when 'E' =>
 176                Validity_Check_Components     := False;
 177
 178             when 'F' =>
 179                Validity_Check_Floating_Point := False;
 180
 181             when 'I' =>
 182                Validity_Check_In_Params      := False;
 183
 184             when 'M' =>
 185                Validity_Check_In_Out_Params  := False;
 186
 187             when 'O' =>
 188                Validity_Check_Operands       := False;
 189
 190             when 'P' =>
 191                Validity_Check_Parameters     := False;
 192
 193             when 'R' =>
 194                Validity_Check_Returns        := False;
 195
 196             when 'S' =>
 197                Validity_Check_Subscripts     := False;
 198
 199             when 'T' =>
 200                Validity_Check_Tests          := False;
 201
 202             when 'a' =>
 203                Validity_Check_Components     := True;
 204                Validity_Check_Copies         := True;
 205                Validity_Check_Default        := True;
 206                Validity_Check_Floating_Point := True;
 207                Validity_Check_In_Out_Params  := True;
 208                Validity_Check_In_Params      := True;
 209                Validity_Check_Operands       := True;
 210                Validity_Check_Parameters     := True;
 211                Validity_Check_Returns        := True;
 212                Validity_Check_Subscripts     := True;
 213                Validity_Check_Tests          := True;
 214
 215             when 'n' =>
 216                Validity_Check_Components     := False;
 217                Validity_Check_Copies         := False;
 218                Validity_Check_Default        := False;
 219                Validity_Check_Floating_Point := False;
 220                Validity_Check_In_Out_Params  := False;
 221                Validity_Check_In_Params      := False;
 222                Validity_Check_Operands       := False;
 223                Validity_Check_Parameters     := False;
 224                Validity_Check_Returns        := False;
 225                Validity_Check_Subscripts     := False;
 226                Validity_Check_Tests          := False;
 227                Validity_Checks_On            := False;
 228
 229             when ' ' =>
 230                null;
 231
 232             when others =>
 233                if Ignore_Unrecognized_VWY_Switches then
 234                   Write_Line ("unrecognized switch -gnatV" & C & " ignored");
 235                else
 236                   OK      := False;
 237                   Err_Col := J - 1;
 238                   return;
 239                end if;
 240          end case;
 241       end loop;
 242
 243       OK := True;
 244       Err_Col := Options'Last + 1;
 245    end Set_Validity_Check_Options;
 246
 247 end Validsw;