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 --                                                                          --
  10 --          Copyright (C) 1992-2001, 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 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
  25 --                                                                          --
  26 ------------------------------------------------------------------------------
  27
  28 with Hostparm; use Hostparm;
  29 with Opt;      use Opt;
  30
  31 package body Stylesw is
  32
  33    -------------------------------
  34    -- Reset_Style_Check_Options --
  35    -------------------------------
  36
  37    procedure Reset_Style_Check_Options is
  38    begin
  39       Style_Check_Indentation      := 0;
  40       Style_Check_Attribute_Casing := False;
  41       Style_Check_Blanks_At_End    := False;
  42       Style_Check_Comments         := False;
  43       Style_Check_End_Labels       := False;
  44       Style_Check_Form_Feeds       := False;
  45       Style_Check_Horizontal_Tabs  := False;
  46       Style_Check_If_Then_Layout   := False;
  47       Style_Check_Keyword_Casing   := False;
  48       Style_Check_Layout           := False;
  49       Style_Check_Max_Line_Length  := False;
  50       Style_Check_Pragma_Casing    := False;
  51       Style_Check_References       := False;
  52       Style_Check_Specs            := False;
  53       Style_Check_Standard         := False;
  54       Style_Check_Subprogram_Order := False;
  55       Style_Check_Tokens           := False;
  56    end Reset_Style_Check_Options;
  57
  58    ------------------------------
  59    -- Save_Style_Check_Options --
  60    ------------------------------
  61
  62    procedure Save_Style_Check_Options (Options : out Style_Check_Options) is
  63       P : Natural := 0;
  64       J : Natural;
  65
  66       procedure Add (C : Character; S : Boolean);
  67       --  Add given character C to string if switch S is true
  68
  69       procedure Add (C : Character; S : Boolean) is
  70       begin
  71          if S then
  72             P := P + 1;
  73             Options (P) := C;
  74          end if;
  75       end Add;
  76
  77    --  Start of processing for Save_Style_Check_Options
  78
  79    begin
  80       for K in Options'Range loop
  81          Options (K) := ' ';
  82       end loop;
  83
  84       Add (Character'Val (Style_Check_Indentation + Character'Pos ('0')),
  85            Style_Check_Indentation /= 0);
  86
  87       Add ('a', Style_Check_Attribute_Casing);
  88       Add ('b', Style_Check_Blanks_At_End);
  89       Add ('c', Style_Check_Comments);
  90       Add ('e', Style_Check_End_Labels);
  91       Add ('f', Style_Check_Form_Feeds);
  92       Add ('h', Style_Check_Horizontal_Tabs);
  93       Add ('i', Style_Check_If_Then_Layout);
  94       Add ('k', Style_Check_Keyword_Casing);
  95       Add ('l', Style_Check_Layout);
  96       Add ('m', Style_Check_Max_Line_Length);
  97       Add ('n', Style_Check_Standard);
  98       Add ('o', Style_Check_Subprogram_Order);
  99       Add ('p', Style_Check_Pragma_Casing);
 100       Add ('r', Style_Check_References);
 101       Add ('s', Style_Check_Specs);
 102       Add ('t', Style_Check_Tokens);
 103
 104       if Style_Check_Max_Line_Length then
 105          P := Options'Last;
 106          J := Natural (Style_Max_Line_Length);
 107
 108          loop
 109             Options (P) := Character'Val (J mod 10 + Character'Pos ('0'));
 110             P := P - 1;
 111             J := J / 10;
 112             exit when J = 0;
 113          end loop;
 114
 115          Options (P) := 'M';
 116       end if;
 117
 118    end Save_Style_Check_Options;
 119
 120    -------------------------------------
 121    -- Set_Default_Style_Check_Options --
 122    -------------------------------------
 123
 124    procedure Set_Default_Style_Check_Options is
 125    begin
 126       Reset_Style_Check_Options;
 127       Set_Style_Check_Options ("3abcefhiklmnprst");
 128    end Set_Default_Style_Check_Options;
 129
 130    -----------------------------
 131    -- Set_Style_Check_Options --
 132    -----------------------------
 133
 134    --  Version used when no error checking is required
 135
 136    procedure Set_Style_Check_Options (Options : String) is
 137       OK : Boolean;
 138       EC : Natural;
 139
 140    begin
 141       Set_Style_Check_Options (Options, OK, EC);
 142    end Set_Style_Check_Options;
 143
 144    --  Normal version with error checking
 145
 146    procedure Set_Style_Check_Options
 147      (Options  : String;
 148       OK       : out Boolean;
 149       Err_Col  : out Natural)
 150    is
 151       J : Natural;
 152       C : Character;
 153
 154    begin
 155       J := Options'First;
 156       while J <= Options'Last loop
 157          C := Options (J);
 158          J := J + 1;
 159
 160          case C is
 161             when '1' .. '9' =>
 162                Style_Check_Indentation
 163                   := Character'Pos (C) - Character'Pos ('0');
 164
 165             when 'a' =>
 166                Style_Check_Attribute_Casing := True;
 167
 168             when 'b' =>
 169                Style_Check_Blanks_At_End    := True;
 170
 171             when 'c' =>
 172                Style_Check_Comments         := True;
 173
 174             when 'e' =>
 175                Style_Check_End_Labels       := True;
 176
 177             when 'f' =>
 178                Style_Check_Form_Feeds       := True;
 179
 180             when 'h' =>
 181                Style_Check_Horizontal_Tabs  := True;
 182
 183             when 'i' =>
 184                Style_Check_If_Then_Layout   := True;
 185
 186             when 'k' =>
 187                Style_Check_Keyword_Casing   := True;
 188
 189             when 'l' =>
 190                Style_Check_Layout           := True;
 191
 192             when 'm' =>
 193                Style_Check_Max_Line_Length  := True;
 194                Style_Max_Line_Length        := 79;
 195
 196             when 'n' =>
 197                Style_Check_Standard         := True;
 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                   J := J + 1;
 215                   exit when J > Options'Last
 216                     or else Options (J) not in '0' .. '9';
 217                end loop;
 218
 219                Style_Max_Line_Length :=
 220                   Int'Min (Style_Max_Line_Length, Hostparm.Max_Line_Length);
 221
 222                Style_Check_Max_Line_Length := Style_Max_Line_Length /= 0;
 223
 224             when 'o' =>
 225                Style_Check_Subprogram_Order := True;
 226
 227             when 'p' =>
 228                Style_Check_Pragma_Casing    := True;
 229
 230             when 'r' =>
 231                Style_Check_References       := True;
 232
 233             when 's' =>
 234                Style_Check_Specs            := True;
 235
 236             when 't' =>
 237                Style_Check_Tokens           := True;
 238
 239             when ' ' =>
 240                null;
 241
 242             when others =>
 243                OK      := False;
 244                Err_Col := J - 1;
 245                return;
 246          end case;
 247       end loop;
 248
 249       Style_Check := True;
 250       OK := True;
 251       Err_Col := Options'Last + 1;
 252    end Set_Style_Check_Options;
 253
 254 end Stylesw;