This file is indexed.

/usr/share/ada/adainclude/gnatprj/style.adb is in libgnatprj4.9-dev 4.9.3-3ubuntu5.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
------------------------------------------------------------------------------
--                                                                          --
--                         GNAT COMPILER COMPONENTS                         --
--                                                                          --
--                                S T Y L E                                 --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
--          Copyright (C) 1992-2013, Free Software Foundation, Inc.         --
--                                                                          --
-- GNAT is free software;  you can  redistribute it  and/or modify it under --
-- terms of the  GNU General Public License as published  by the Free Soft- --
-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
-- for  more details.  You should have  received  a copy of the GNU General --
-- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
-- http://www.gnu.org/licenses for a complete copy of the license.          --
--                                                                          --
-- GNAT was originally developed  by the GNAT team at  New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc.      --
--                                                                          --
------------------------------------------------------------------------------

with Atree;    use Atree;
with Casing;   use Casing;
with Csets;    use Csets;
with Einfo;    use Einfo;
with Errout;   use Errout;
with Namet;    use Namet;
with Nlists;   use Nlists;
with Opt;      use Opt;
with Sinfo;    use Sinfo;
with Sinput;   use Sinput;
with Stand;    use Stand;
with Stylesw;  use Stylesw;

package body Style is

   -----------------------
   -- Body_With_No_Spec --
   -----------------------

   --  If the check specs mode (-gnatys) is set, then all subprograms must
   --  have specs unless they are parameterless procedures at the library
   --  level (i.e. they are possible main programs).

   procedure Body_With_No_Spec (N : Node_Id) is
   begin
      if Style_Check_Specs then
         if Nkind (Parent (N)) = N_Compilation_Unit then
            declare
               Spec  : constant Node_Id := Specification (N);
               Defnm : constant Node_Id := Defining_Unit_Name (Spec);

            begin
               if Nkind (Spec) = N_Procedure_Specification
                 and then Nkind (Defnm) = N_Defining_Identifier
                 and then No (First_Formal (Defnm))
               then
                  return;
               end if;
            end;
         end if;

         Error_Msg_N ("(style) subprogram body has no previous spec", N);
      end if;
   end Body_With_No_Spec;

   ---------------------------------
   -- Check_Array_Attribute_Index --
   ---------------------------------

   procedure Check_Array_Attribute_Index
     (N  : Node_Id;
      E1 : Node_Id;
      D  : Int)
   is
   begin
      if Style_Check_Array_Attribute_Index then
         if D = 1 and then Present (E1) then
            Error_Msg_N -- CODEFIX
              ("(style) index number not allowed for one dimensional array",
               E1);
         elsif D > 1 and then No (E1) then
            Error_Msg_N -- CODEFIX
              ("(style) index number required for multi-dimensional array",
               N);
         end if;
      end if;
   end Check_Array_Attribute_Index;

   ----------------------
   -- Check_Identifier --
   ----------------------

   --  In check references mode (-gnatyr), identifier uses must be cased
   --  the same way as the corresponding identifier declaration. If standard
   --  references are checked (-gnatyn), then identifiers from Standard must
   --  be cased as in the Reference Manual.

   procedure Check_Identifier
     (Ref : Node_Or_Entity_Id;
      Def : Node_Or_Entity_Id)
   is
      Sref : Source_Ptr := Sloc (Ref);
      Sdef : Source_Ptr := Sloc (Def);
      Tref : Source_Buffer_Ptr;
      Tdef : Source_Buffer_Ptr;
      Nlen : Nat;
      Cas  : Casing_Type;

   begin
      --  If reference does not come from source, nothing to check

      if not Comes_From_Source (Ref) then
         return;

      --  If previous error on either node/entity, ignore

      elsif Error_Posted (Ref) or else Error_Posted (Def) then
         return;

      --  Case of definition comes from source

      elsif Comes_From_Source (Def) then

         --  Check same casing if we are checking references

         if Style_Check_References then
            Tref := Source_Text (Get_Source_File_Index (Sref));
            Tdef := Source_Text (Get_Source_File_Index (Sdef));

            --  Ignore operator name case completely. This also catches the
            --  case of where one is an operator and the other is not. This
            --  is a phenomenon from rewriting of operators as functions,
            --  and is to be ignored.

            if Tref (Sref) = '"' or else Tdef (Sdef) = '"' then
               return;

            else
               while Tref (Sref) = Tdef (Sdef) loop

                  --  If end of identifier, all done

                  if not Identifier_Char (Tref (Sref)) then
                     return;

                  --  Otherwise loop continues

                  else
                     Sref := Sref + 1;
                     Sdef := Sdef + 1;
                  end if;
               end loop;

               --  Fall through loop when mismatch between identifiers
               --  If either identifier is not terminated, error.

               if Identifier_Char (Tref (Sref))
                    or else
                  Identifier_Char (Tdef (Sdef))
               then
                  Error_Msg_Node_1 := Def;
                  Error_Msg_Sloc := Sloc (Def);
                  Error_Msg -- CODEFIX
                    ("(style) bad casing of & declared#", Sref);
                  return;

               --  Else end of identifiers, and they match

               else
                  return;
               end if;
            end if;
         end if;

      --  Case of definition in package Standard

      elsif Sdef = Standard_Location
              or else
            Sdef = Standard_ASCII_Location
      then
         --  Check case of identifiers in Standard

         if Style_Check_Standard then
            Tref := Source_Text (Get_Source_File_Index (Sref));

            --  Ignore operators

            if Tref (Sref) = '"' then
               null;

            --  Otherwise determine required casing of Standard entity

            else
               --  ASCII is all upper case

               if Entity (Ref) = Standard_ASCII then
                  Cas := All_Upper_Case;

               --  Special handling for names in package ASCII

               elsif Sdef = Standard_ASCII_Location then
                  declare
                     Nam : constant String := Get_Name_String (Chars (Def));

                  begin
                     --  Bar is mixed case

                     if Nam = "bar" then
                        Cas := Mixed_Case;

                     --  All names longer than 4 characters are mixed case

                     elsif Nam'Length > 4 then
                        Cas := Mixed_Case;

                     --  All names shorter than 4 characters (other than Bar,
                     --  which we already tested for specially) are Upper case.

                     else
                        Cas := All_Upper_Case;
                     end if;
                  end;

               --  All other entities are in mixed case

               else
                  Cas := Mixed_Case;
               end if;

               Nlen := Length_Of_Name (Chars (Ref));

               --  Now check if we have the right casing

               if Determine_Casing
                    (Tref (Sref .. Sref + Source_Ptr (Nlen) - 1)) = Cas
               then
                  null;
               else
                  Name_Len := Integer (Nlen);
                  Name_Buffer (1 .. Name_Len) :=
                    String (Tref (Sref .. Sref + Source_Ptr (Nlen) - 1));
                  Set_Casing (Cas);
                  Error_Msg_Name_1 := Name_Enter;
                  Error_Msg_N -- CODEFIX
                    ("(style) bad casing of %% declared in Standard", Ref);
               end if;
            end if;
         end if;
      end if;
   end Check_Identifier;

   ------------------------
   -- Missing_Overriding --
   ------------------------

   procedure Missing_Overriding (N : Node_Id; E : Entity_Id) is
      Nod : Node_Id;

   begin
      --  Perform the check on source subprograms and on subprogram instances,
      --  because these can be primitives of untagged types. Note that such
      --  indicators were introduced in Ada 2005.

      if Style_Check_Missing_Overriding
        and then (Comes_From_Source (N) or else Is_Generic_Instance (E))
        and then Ada_Version_Explicit >= Ada_2005
      then
         --  If the subprogram is an instantiation,  its declaration appears
         --  within a wrapper package that precedes the instance node. Place
         --  warning on the node to avoid references to the original generic.

         if Nkind (N) = N_Subprogram_Declaration
           and then Is_Generic_Instance (E)
         then
            Nod := Next (Parent (Parent (List_Containing (N))));
         else
            Nod := N;
         end if;

         if Nkind (N) = N_Subprogram_Body then
            Error_Msg_NE -- CODEFIX
              ("(style) missing OVERRIDING indicator in body of&", N, E);
         else
            Error_Msg_NE -- CODEFIX
              ("(style) missing OVERRIDING indicator in declaration of&",
               Nod, E);
         end if;
      end if;
   end Missing_Overriding;

   -----------------------------------
   -- Subprogram_Not_In_Alpha_Order --
   -----------------------------------

   procedure Subprogram_Not_In_Alpha_Order (Name : Node_Id) is
   begin
      if Style_Check_Order_Subprograms then
         Error_Msg_N -- CODEFIX
           ("(style) subprogram body& not in alphabetical order", Name);
      end if;
   end Subprogram_Not_In_Alpha_Order;
end Style;