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 --          Copyright (C) 1992-2004, 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,  59 Temple Place - Suite 330,  Boston, --
  20 -- MA 02111-1307, 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 Stylesw is
  30
  31    -------------------------------
  32    -- Reset_Style_Check_Options --
  33    -------------------------------
  34
  35    procedure Reset_Style_Check_Options is
  36    begin
  37       Style_Check_Indentation      := 0;
  38       Style_Check_Attribute_Casing := False;
  39       Style_Check_Blanks_At_End    := False;
  40       Style_Check_Comments         := False;
  41       Style_Check_End_Labels       := False;
  42       Style_Check_Form_Feeds       := False;
  43       Style_Check_Horizontal_Tabs  := False;
  44       Style_Check_If_Then_Layout   := False;
  45       Style_Check_Keyword_Casing   := False;
  46       Style_Check_Layout           := False;
  47       Style_Check_Max_Line_Length  := False;
  48       Style_Check_Pragma_Casing    := False;
  49       Style_Check_References       := False;
  50       Style_Check_Specs            := False;
  51       Style_Check_Standard         := False;
  52       Style_Check_Subprogram_Order := False;
  53       Style_Check_Tokens           := False;
  54    end Reset_Style_Check_Options;
  55
  56    ------------------------------
  57    -- Save_Style_Check_Options --
  58    ------------------------------
  59
  60    procedure Save_Style_Check_Options (Options : out Style_Check_Options) is
  61       P : Natural := 0;
  62       J : Natural;
  63
  64       procedure Add (C : Character; S : Boolean);
  65       --  Add given character C to string if switch S is true
  66
  67       procedure Add (C : Character; S : Boolean) is
  68       begin
  69          if S then
  70             P := P + 1;
  71             Options (P) := C;
  72          end if;
  73       end Add;
  74
  75    --  Start of processing for Save_Style_Check_Options
  76
  77    begin
  78       for K in Options'Range loop
  79          Options (K) := ' ';
  80       end loop;
  81
  82       Add (Character'Val (Style_Check_Indentation + Character'Pos ('0')),
  83            Style_Check_Indentation /= 0);
  84
  85       Add ('a', Style_Check_Attribute_Casing);
  86       Add ('b', Style_Check_Blanks_At_End);
  87       Add ('c', Style_Check_Comments);
  88       Add ('e', Style_Check_End_Labels);
  89       Add ('f', Style_Check_Form_Feeds);
  90       Add ('h', Style_Check_Horizontal_Tabs);
  91       Add ('i', Style_Check_If_Then_Layout);
  92       Add ('k', Style_Check_Keyword_Casing);
  93       Add ('l', Style_Check_Layout);
  94       Add ('m', Style_Check_Max_Line_Length);
  95       Add ('n', Style_Check_Standard);
  96       Add ('o', Style_Check_Subprogram_Order);
  97       Add ('p', Style_Check_Pragma_Casing);
  98       Add ('r', Style_Check_References);
  99       Add ('s', Style_Check_Specs);
 100       Add ('t', Style_Check_Tokens);
 101
 102       if Style_Check_Max_Line_Length then
 103          P := Options'Last;
 104          J := Natural (Style_Max_Line_Length);
 105
 106          loop
 107             Options (P) := Character'Val (J mod 10 + Character'Pos ('0'));
 108             P := P - 1;
 109             J := J / 10;
 110             exit when J = 0;
 111          end loop;
 112
 113          Options (P) := 'M';
 114       end if;
 115
 116    end Save_Style_Check_Options;
 117
 118    -------------------------------------
 119    -- Set_Default_Style_Check_Options --
 120    -------------------------------------
 121
 122    procedure Set_Default_Style_Check_Options is
 123    begin
 124       Reset_Style_Check_Options;
 125       Set_Style_Check_Options ("3abcefhiklmnprst");
 126    end Set_Default_Style_Check_Options;
 127
 128    -----------------------------
 129    -- Set_Style_Check_Options --
 130    -----------------------------
 131
 132    --  Version used when no error checking is required
 133
 134    procedure Set_Style_Check_Options (Options : String) is
 135       OK : Boolean;
 136       EC : Natural;
 137    begin
 138       Set_Style_Check_Options (Options, OK, EC);
 139    end Set_Style_Check_Options;
 140
 141    --  Normal version with error checking
 142
 143    procedure Set_Style_Check_Options
 144      (Options  : String;
 145       OK       : out Boolean;
 146       Err_Col  : out Natural)
 147    is
 148       J : Natural;
 149       C : Character;
 150
 151    begin
 152       J := Options'First;
 153       while J <= Options'Last loop
 154          C := Options (J);
 155          J := J + 1;
 156
 157          case C is
 158             when '1' .. '9' =>
 159                Style_Check_Indentation
 160                   := Character'Pos (C) - Character'Pos ('0');
 161
 162             when 'a' =>
 163                Style_Check_Attribute_Casing := True;
 164
 165             when 'b' =>
 166                Style_Check_Blanks_At_End    := True;
 167
 168             when 'c' =>
 169                Style_Check_Comments         := True;
 170
 171             when 'e' =>
 172                Style_Check_End_Labels       := True;
 173
 174             when 'f' =>
 175                Style_Check_Form_Feeds       := True;
 176
 177             when 'h' =>
 178                Style_Check_Horizontal_Tabs  := True;
 179
 180             when 'i' =>
 181                Style_Check_If_Then_Layout   := True;
 182
 183             when 'k' =>
 184                Style_Check_Keyword_Casing   := True;
 185
 186             when 'l' =>
 187                Style_Check_Layout           := True;
 188
 189             when 'm' =>
 190                Style_Check_Max_Line_Length  := True;
 191                Style_Max_Line_Length        := 79;
 192
 193             when 'n' =>
 194                Style_Check_Standard         := True;
 195
 196             when 'N' =>
 197                Reset_Style_Check_Options;
 198
 199             when 'M' =>
 200                Style_Max_Line_Length := 0;
 201
 202                if J > Options'Last
 203                  or else Options (J) not in '0' .. '9'
 204                then
 205                   OK := False;
 206                   Err_Col := J;
 207                   return;
 208                end if;
 209
 210                loop
 211                   Style_Max_Line_Length :=
 212                     Style_Max_Line_Length * 10 +
 213                       Character'Pos (Options (J)) - Character'Pos ('0');
 214
 215                   if Style_Max_Line_Length > Int (Column_Number'Last) then
 216                      OK := False;
 217                      Err_Col := J;
 218                      return;
 219                   end if;
 220
 221                   J := J + 1;
 222                   exit when J > Options'Last
 223                     or else Options (J) not in '0' .. '9';
 224                end loop;
 225
 226                Style_Check_Max_Line_Length := Style_Max_Line_Length /= 0;
 227
 228             when 'o' =>
 229                Style_Check_Subprogram_Order := True;
 230
 231             when 'p' =>
 232                Style_Check_Pragma_Casing    := True;
 233
 234             when 'r' =>
 235                Style_Check_References       := True;
 236
 237             when 's' =>
 238                Style_Check_Specs            := True;
 239
 240             when 't' =>
 241                Style_Check_Tokens           := True;
 242
 243             when ' ' =>
 244                null;
 245
 246             when others =>
 247                OK      := False;
 248                Err_Col := J - 1;
 249                return;
 250          end case;
 251       end loop;
 252
 253       Style_Check := True;
 254       OK := True;
 255       Err_Col := Options'Last + 1;
 256    end Set_Style_Check_Options;
 257
 258 end Stylesw;