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 --                                                                          --
  10 --          Copyright (C) 2001-2002 Free Software Foundation, Inc.          --
  11 --                                                                          --
  12 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  13 -- terms of the  GNU General Public License as published  by the Free Soft- --
  14 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  15 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  16 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  17 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  18 -- for  more details.  You should have  received  a copy of the GNU General --
  19 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  20 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  21 -- MA 02111-1307, USA.                                                      --
  22 --                                                                          --
  23 -- GNAT was originally developed  by the GNAT team at  New York University. --
  24 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  25 --                                                                          --
  26 ------------------------------------------------------------------------------
  27
  28 with Opt; use Opt;
  29
  30 package body Validsw is
  31
  32    ----------------------------------
  33    -- Reset_Validity_Check_Options --
  34    ----------------------------------
  35
  36    procedure Reset_Validity_Check_Options is
  37    begin
  38       Validity_Check_Copies         := False;
  39       Validity_Check_Default        := True;
  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_Returns        := False;
  45       Validity_Check_Subscripts     := False;
  46       Validity_Check_Tests          := False;
  47    end Reset_Validity_Check_Options;
  48
  49    ---------------------------------
  50    -- Save_Validity_Check_Options --
  51    ---------------------------------
  52
  53    procedure Save_Validity_Check_Options
  54      (Options : out Validity_Check_Options)
  55    is
  56       P : Natural := 0;
  57
  58       procedure Add (C : Character; S : Boolean);
  59       --  Add given character C to string if switch S is true
  60
  61       procedure Add (C : Character; S : Boolean) is
  62       begin
  63          if S then
  64             P := P + 1;
  65             Options (P) := C;
  66          end if;
  67       end Add;
  68
  69    --  Start of processing for Save_Validity_Check_Options
  70
  71    begin
  72       for K in Options'Range loop
  73          Options (K) := ' ';
  74       end loop;
  75
  76       Add ('n', not Validity_Check_Default);
  77
  78       Add ('c', Validity_Check_Copies);
  79       Add ('f', Validity_Check_Floating_Point);
  80       Add ('i', Validity_Check_In_Params);
  81       Add ('m', Validity_Check_In_Out_Params);
  82       Add ('o', Validity_Check_Operands);
  83       Add ('r', Validity_Check_Returns);
  84       Add ('s', Validity_Check_Subscripts);
  85       Add ('t', Validity_Check_Tests);
  86    end Save_Validity_Check_Options;
  87
  88    ----------------------------------------
  89    -- Set_Default_Validity_Check_Options --
  90    ----------------------------------------
  91
  92    procedure Set_Default_Validity_Check_Options is
  93    begin
  94       Reset_Validity_Check_Options;
  95       Set_Validity_Check_Options ("d");
  96    end Set_Default_Validity_Check_Options;
  97
  98    --------------------------------
  99    -- Set_Validity_Check_Options --
 100    --------------------------------
 101
 102    --  Version used when no error checking is required
 103
 104    procedure Set_Validity_Check_Options (Options : String) is
 105       OK : Boolean;
 106       EC : Natural;
 107
 108    begin
 109       Set_Validity_Check_Options (Options, OK, EC);
 110    end Set_Validity_Check_Options;
 111
 112    --  Normal version with error checking
 113
 114    procedure Set_Validity_Check_Options
 115      (Options  : String;
 116       OK       : out Boolean;
 117       Err_Col  : out Natural)
 118    is
 119       J : Natural;
 120       C : Character;
 121
 122    begin
 123       Reset_Validity_Check_Options;
 124
 125       J := Options'First;
 126       while J <= Options'Last loop
 127          C := Options (J);
 128          J := J + 1;
 129
 130          --  Turn on validity checking (gets turned off by Vn)
 131
 132          Validity_Checks_On := True;
 133
 134          case C is
 135
 136             when 'c' =>
 137                Validity_Check_Copies         := True;
 138
 139             when 'd' =>
 140                Validity_Check_Default        := True;
 141
 142             when 'f' =>
 143                Validity_Check_Floating_Point := True;
 144
 145             when 'i' =>
 146                Validity_Check_In_Params      := True;
 147
 148             when 'm' =>
 149                Validity_Check_In_Out_Params  := True;
 150
 151             when 'o' =>
 152                Validity_Check_Operands       := 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 'R' =>
 182                Validity_Check_Returns        := False;
 183
 184             when 'S' =>
 185                Validity_Check_Subscripts     := False;
 186
 187             when 'T' =>
 188                Validity_Check_Tests          := False;
 189
 190             when 'a' =>
 191                Validity_Check_Copies         := True;
 192                Validity_Check_Default        := True;
 193                Validity_Check_Floating_Point := True;
 194                Validity_Check_In_Out_Params  := True;
 195                Validity_Check_In_Params      := True;
 196                Validity_Check_Operands       := True;
 197                Validity_Check_Returns        := True;
 198                Validity_Check_Subscripts     := True;
 199                Validity_Check_Tests          := True;
 200
 201             when 'n' =>
 202                Validity_Check_Copies         := False;
 203                Validity_Check_Default        := False;
 204                Validity_Check_Floating_Point := False;
 205                Validity_Check_In_Out_Params  := False;
 206                Validity_Check_In_Params      := False;
 207                Validity_Check_Operands       := False;
 208                Validity_Check_Returns        := False;
 209                Validity_Check_Subscripts     := False;
 210                Validity_Check_Tests          := False;
 211                Validity_Checks_On            := False;
 212
 213             when ' ' =>
 214                null;
 215
 216             when others =>
 217                OK      := False;
 218                Err_Col := J - 1;
 219                return;
 220          end case;
 221       end loop;
 222
 223       OK := True;
 224       Err_Col := Options'Last + 1;
 225    end Set_Validity_Check_Options;
 226
 227 end Validsw;