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) 2001-2003 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 2,  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 COPYING.  If not, write --
  19 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, USA.                                              --
  21 --                                                                          --
  22 -- GNAT was originally developed  by the GNAT team at  New York University. --
  23 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  24 --                                                                          --
  25 ------------------------------------------------------------------------------
  26
  27 with Opt; use Opt;
  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_Copies         := False;
  38       Validity_Check_Default        := True;
  39       Validity_Check_Floating_Point := False;
  40       Validity_Check_In_Out_Params  := False;
  41       Validity_Check_In_Params      := False;
  42       Validity_Check_Operands       := False;
  43       Validity_Check_Returns        := False;
  44       Validity_Check_Subscripts     := False;
  45       Validity_Check_Tests          := False;
  46    end Reset_Validity_Check_Options;
  47
  48    ---------------------------------
  49    -- Save_Validity_Check_Options --
  50    ---------------------------------
  51
  52    procedure Save_Validity_Check_Options
  53      (Options : out Validity_Check_Options)
  54    is
  55       P : Natural := 0;
  56
  57       procedure Add (C : Character; S : Boolean);
  58       --  Add given character C to string if switch S is true
  59
  60       procedure Add (C : Character; S : Boolean) is
  61       begin
  62          if S then
  63             P := P + 1;
  64             Options (P) := C;
  65          end if;
  66       end Add;
  67
  68    --  Start of processing for Save_Validity_Check_Options
  69
  70    begin
  71       for K in Options'Range loop
  72          Options (K) := ' ';
  73       end loop;
  74
  75       Add ('n', not Validity_Check_Default);
  76
  77       Add ('c', Validity_Check_Copies);
  78       Add ('f', Validity_Check_Floating_Point);
  79       Add ('i', Validity_Check_In_Params);
  80       Add ('m', Validity_Check_In_Out_Params);
  81       Add ('o', Validity_Check_Operands);
  82       Add ('r', Validity_Check_Returns);
  83       Add ('s', Validity_Check_Subscripts);
  84       Add ('t', Validity_Check_Tests);
  85    end Save_Validity_Check_Options;
  86
  87    ----------------------------------------
  88    -- Set_Default_Validity_Check_Options --
  89    ----------------------------------------
  90
  91    procedure Set_Default_Validity_Check_Options is
  92    begin
  93       Reset_Validity_Check_Options;
  94       Set_Validity_Check_Options ("d");
  95    end Set_Default_Validity_Check_Options;
  96
  97    --------------------------------
  98    -- Set_Validity_Check_Options --
  99    --------------------------------
 100
 101    --  Version used when no error checking is required
 102
 103    procedure Set_Validity_Check_Options (Options : String) is
 104       OK : Boolean;
 105       EC : Natural;
 106
 107    begin
 108       Set_Validity_Check_Options (Options, OK, EC);
 109    end Set_Validity_Check_Options;
 110
 111    --  Normal version with error checking
 112
 113    procedure Set_Validity_Check_Options
 114      (Options  : String;
 115       OK       : out Boolean;
 116       Err_Col  : out Natural)
 117    is
 118       J : Natural;
 119       C : Character;
 120
 121    begin
 122       J := Options'First;
 123       while J <= Options'Last loop
 124          C := Options (J);
 125          J := J + 1;
 126
 127          --  Turn on validity checking (gets turned off by Vn)
 128
 129          Validity_Checks_On := True;
 130
 131          case C is
 132
 133             when 'c' =>
 134                Validity_Check_Copies         := True;
 135
 136             when 'd' =>
 137                Validity_Check_Default        := True;
 138
 139             when 'f' =>
 140                Validity_Check_Floating_Point := True;
 141
 142             when 'i' =>
 143                Validity_Check_In_Params      := True;
 144
 145             when 'm' =>
 146                Validity_Check_In_Out_Params  := True;
 147
 148             when 'o' =>
 149                Validity_Check_Operands       := True;
 150
 151             when 'p' =>
 152                Validity_Check_Parameters     := True;
 153
 154             when 'r' =>
 155                Validity_Check_Returns        := True;
 156
 157             when 's' =>
 158                Validity_Check_Subscripts     := True;
 159
 160             when 't' =>
 161                Validity_Check_Tests          := True;
 162
 163             when 'C' =>
 164                Validity_Check_Copies         := False;
 165
 166             when 'D' =>
 167                Validity_Check_Default        := False;
 168
 169             when 'I' =>
 170                Validity_Check_In_Params      := False;
 171
 172             when 'F' =>
 173                Validity_Check_Floating_Point := False;
 174
 175             when 'M' =>
 176                Validity_Check_In_Out_Params  := False;
 177
 178             when 'O' =>
 179                Validity_Check_Operands       := False;
 180
 181             when 'P' =>
 182                Validity_Check_Parameters     := False;
 183
 184             when 'R' =>
 185                Validity_Check_Returns        := False;
 186
 187             when 'S' =>
 188                Validity_Check_Subscripts     := False;
 189
 190             when 'T' =>
 191                Validity_Check_Tests          := False;
 192
 193             when 'a' =>
 194                Validity_Check_Copies         := True;
 195                Validity_Check_Default        := True;
 196                Validity_Check_Floating_Point := True;
 197                Validity_Check_In_Out_Params  := True;
 198                Validity_Check_In_Params      := True;
 199                Validity_Check_Operands       := True;
 200                Validity_Check_Parameters     := True;
 201                Validity_Check_Returns        := True;
 202                Validity_Check_Subscripts     := True;
 203                Validity_Check_Tests          := True;
 204
 205             when 'n' =>
 206                Validity_Check_Copies         := False;
 207                Validity_Check_Default        := False;
 208                Validity_Check_Floating_Point := False;
 209                Validity_Check_In_Out_Params  := False;
 210                Validity_Check_In_Params      := False;
 211                Validity_Check_Operands       := False;
 212                Validity_Check_Parameters     := False;
 213                Validity_Check_Returns        := False;
 214                Validity_Check_Subscripts     := False;
 215                Validity_Check_Tests          := False;
 216                Validity_Checks_On            := False;
 217
 218             when ' ' =>
 219                null;
 220
 221             when others =>
 222                OK      := False;
 223                Err_Col := J - 1;
 224                return;
 225          end case;
 226       end loop;
 227
 228       OK := True;
 229       Err_Col := Options'Last + 1;
 230    end Set_Validity_Check_Options;
 231
 232 end Validsw;