gcc/ada/stylesw.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                              S T Y L E S W                               --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --                            $Revision: 1.14 $
  10 --                                                                          --
  11 --          Copyright (C) 1992-2001, Free Software Foundation, Inc.         --
  12 --                                                                          --
  13 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  14 -- terms of the  GNU General Public License as published  by the Free Soft- --
  15 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  16 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  17 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  18 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  19 -- for  more details.  You should have  received  a copy of the GNU General --
  20 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  21 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  22 -- MA 02111-1307, USA.                                                      --
  23 --                                                                          --
  24 -- GNAT was originally developed  by the GNAT team at  New York University. --
  25 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
  26 --                                                                          --
  27 ------------------------------------------------------------------------------
  28
  29 with Hostparm; use Hostparm;
  30 with Opt;      use Opt;
  31
  32 package body Stylesw is
  33
  34    -------------------------------
  35    -- Reset_Style_Check_Options --
  36    -------------------------------
  37
  38    procedure Reset_Style_Check_Options is
  39    begin
  40       Style_Check_Indentation      := 0;
  41       Style_Check_Attribute_Casing := False;
  42       Style_Check_Blanks_At_End    := False;
  43       Style_Check_Comments         := False;
  44       Style_Check_End_Labels       := False;
  45       Style_Check_Form_Feeds       := False;
  46       Style_Check_Horizontal_Tabs  := False;
  47       Style_Check_If_Then_Layout   := False;
  48       Style_Check_Keyword_Casing   := False;
  49       Style_Check_Layout           := False;
  50       Style_Check_Max_Line_Length  := False;
  51       Style_Check_Pragma_Casing    := False;
  52       Style_Check_References       := False;
  53       Style_Check_Specs            := False;
  54       Style_Check_Standard         := False;
  55       Style_Check_Subprogram_Order := False;
  56       Style_Check_Tokens           := False;
  57    end Reset_Style_Check_Options;
  58
  59    ------------------------------
  60    -- Save_Style_Check_Options --
  61    ------------------------------
  62
  63    procedure Save_Style_Check_Options (Options : out Style_Check_Options) is
  64       P : Natural := 0;
  65       J : Natural;
  66
  67       procedure Add (C : Character; S : Boolean);
  68       --  Add given character C to string if switch S is true
  69
  70       procedure Add (C : Character; S : Boolean) is
  71       begin
  72          if S then
  73             P := P + 1;
  74             Options (P) := C;
  75          end if;
  76       end Add;
  77
  78    --  Start of processing for Save_Style_Check_Options
  79
  80    begin
  81       for K in Options'Range loop
  82          Options (K) := ' ';
  83       end loop;
  84
  85       Add (Character'Val (Style_Check_Indentation + Character'Pos ('0')),
  86            Style_Check_Indentation /= 0);
  87
  88       Add ('a', Style_Check_Attribute_Casing);
  89       Add ('b', Style_Check_Blanks_At_End);
  90       Add ('c', Style_Check_Comments);
  91       Add ('e', Style_Check_End_Labels);
  92       Add ('f', Style_Check_Form_Feeds);
  93       Add ('h', Style_Check_Horizontal_Tabs);
  94       Add ('i', Style_Check_If_Then_Layout);
  95       Add ('k', Style_Check_Keyword_Casing);
  96       Add ('l', Style_Check_Layout);
  97       Add ('m', Style_Check_Max_Line_Length);
  98       Add ('n', Style_Check_Standard);
  99       Add ('o', Style_Check_Subprogram_Order);
 100       Add ('p', Style_Check_Pragma_Casing);
 101       Add ('r', Style_Check_References);
 102       Add ('s', Style_Check_Specs);
 103       Add ('t', Style_Check_Tokens);
 104
 105       if Style_Check_Max_Line_Length then
 106          P := Options'Last;
 107          J := Natural (Style_Max_Line_Length);
 108
 109          loop
 110             Options (P) := Character'Val (J mod 10 + Character'Pos ('0'));
 111             P := P - 1;
 112             J := J / 10;
 113             exit when J = 0;
 114          end loop;
 115
 116          Options (P) := 'M';
 117       end if;
 118
 119    end Save_Style_Check_Options;
 120
 121    -------------------------------------
 122    -- Set_Default_Style_Check_Options --
 123    -------------------------------------
 124
 125    procedure Set_Default_Style_Check_Options is
 126    begin
 127       Reset_Style_Check_Options;
 128       Set_Style_Check_Options ("3abcefhiklmnprst");
 129    end Set_Default_Style_Check_Options;
 130
 131    -----------------------------
 132    -- Set_Style_Check_Options --
 133    -----------------------------
 134
 135    --  Version used when no error checking is required
 136
 137    procedure Set_Style_Check_Options (Options : String) is
 138       OK : Boolean;
 139       EC : Natural;
 140
 141    begin
 142       Set_Style_Check_Options (Options, OK, EC);
 143    end Set_Style_Check_Options;
 144
 145    --  Normal version with error checking
 146
 147    procedure Set_Style_Check_Options
 148      (Options  : String;
 149       OK       : out Boolean;
 150       Err_Col  : out Natural)
 151    is
 152       J : Natural;
 153       C : Character;
 154
 155    begin
 156       J := Options'First;
 157       while J <= Options'Last loop
 158          C := Options (J);
 159          J := J + 1;
 160
 161          case C is
 162             when '1' .. '9' =>
 163                Style_Check_Indentation
 164                   := Character'Pos (C) - Character'Pos ('0');
 165
 166             when 'a' =>
 167                Style_Check_Attribute_Casing := True;
 168
 169             when 'b' =>
 170                Style_Check_Blanks_At_End    := True;
 171
 172             when 'c' =>
 173                Style_Check_Comments         := True;
 174
 175             when 'e' =>
 176                Style_Check_End_Labels       := True;
 177
 178             when 'f' =>
 179                Style_Check_Form_Feeds       := True;
 180
 181             when 'h' =>
 182                Style_Check_Horizontal_Tabs  := True;
 183
 184             when 'i' =>
 185                Style_Check_If_Then_Layout   := True;
 186
 187             when 'k' =>
 188                Style_Check_Keyword_Casing   := True;
 189
 190             when 'l' =>
 191                Style_Check_Layout           := True;
 192
 193             when 'm' =>
 194                Style_Check_Max_Line_Length  := True;
 195                Style_Max_Line_Length        := 79;
 196
 197             when 'n' =>
 198                Style_Check_Standard         := True;
 199
 200             when 'M' =>
 201                Style_Max_Line_Length := 0;
 202
 203                if J > Options'Last
 204                  or else Options (J) not in '0' .. '9'
 205                then
 206                   OK := False;
 207                   Err_Col := J;
 208                   return;
 209                end if;
 210
 211                loop
 212                   Style_Max_Line_Length :=
 213                     Style_Max_Line_Length * 10 +
 214                       Character'Pos (Options (J)) - Character'Pos ('0');
 215                   J := J + 1;
 216                   exit when J > Options'Last
 217                     or else Options (J) not in '0' .. '9';
 218                end loop;
 219
 220                Style_Max_Line_Length :=
 221                   Int'Min (Style_Max_Line_Length, Hostparm.Max_Line_Length);
 222
 223                Style_Check_Max_Line_Length := Style_Max_Line_Length /= 0;
 224
 225             when 'o' =>
 226                Style_Check_Subprogram_Order := True;
 227
 228             when 'p' =>
 229                Style_Check_Pragma_Casing    := True;
 230
 231             when 'r' =>
 232                Style_Check_References       := True;
 233
 234             when 's' =>
 235                Style_Check_Specs            := True;
 236
 237             when 't' =>
 238                Style_Check_Tokens           := True;
 239
 240             when ' ' =>
 241                null;
 242
 243             when others =>
 244                OK      := False;
 245                Err_Col := J - 1;
 246                return;
 247          end case;
 248       end loop;
 249
 250       Style_Check := True;
 251       OK := True;
 252       Err_Col := Options'Last + 1;
 253    end Set_Style_Check_Options;
 254
 255 end Stylesw;