1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2009, Free Software Foundation, Inc. --
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 3, 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 COPYING3. If not, go to --
19 -- http://www.gnu.org/licenses for a complete copy of the license. --
21 -- GNAT was originally developed by the GNAT team at New York University. --
22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
24 ------------------------------------------------------------------------------
26 with Hostparm; use Hostparm;
29 package body Stylesw is
31 -- The following constant defines the default style options for -gnaty
33 Default_Style : constant String :=
34 "3" & -- indentation level is 3
35 "a" & -- check attribute casing
36 "A" & -- check array attribute indexes
37 "b" & -- check no blanks at end of lines
38 "c" & -- check comment formats
39 "e" & -- check end/exit labels present
40 "f" & -- check no form/feeds vertical tabs in source
41 "h" & -- check no horizontal tabs in source
42 "i" & -- check if-then layout
43 "k" & -- check casing rules for keywords
44 "l" & -- check reference manual layout
45 "m" & -- check line length <= 79 characters
46 "n" & -- check casing of package Standard idents
47 "p" & -- check pragma casing
48 "r" & -- check casing for identifier references
49 "s" & -- check separate subprogram specs present
50 "t"; -- check token separation rules
52 -- The following constant defines the GNAT style options, showing them
53 -- as additions to the standard default style check options.
55 GNAT_Style : constant String := Default_Style &
56 "d" & -- check no DOS line terminators
57 "I" & -- check mode IN
58 "S" & -- check separate lines after THEN or ELSE
59 "u" & -- check no unnecessary blank lines
60 "x"; -- check extra parentheses around conditionals
62 -------------------------------
63 -- Reset_Style_Check_Options --
64 -------------------------------
66 procedure Reset_Style_Check_Options is
68 Style_Check_Indentation := 0;
69 Style_Check_Array_Attribute_Index := False;
70 Style_Check_Attribute_Casing := False;
71 Style_Check_Blanks_At_End := False;
72 Style_Check_Blank_Lines := False;
73 Style_Check_Boolean_And_Or := False;
74 Style_Check_Comments := False;
75 Style_Check_DOS_Line_Terminator := False;
76 Style_Check_End_Labels := False;
77 Style_Check_Form_Feeds := False;
78 Style_Check_Horizontal_Tabs := False;
79 Style_Check_If_Then_Layout := False;
80 Style_Check_Keyword_Casing := False;
81 Style_Check_Layout := False;
82 Style_Check_Max_Line_Length := False;
83 Style_Check_Max_Nesting_Level := False;
84 Style_Check_Missing_Overriding := False;
85 Style_Check_Mode_In := False;
86 Style_Check_Order_Subprograms := False;
87 Style_Check_Pragma_Casing := False;
88 Style_Check_References := False;
89 Style_Check_Separate_Stmt_Lines := False;
90 Style_Check_Specs := False;
91 Style_Check_Standard := False;
92 Style_Check_Tokens := False;
93 Style_Check_Xtra_Parens := False;
94 end Reset_Style_Check_Options;
100 function RM_Column_Check return Boolean is
102 return Style_Check and Style_Check_Layout;
105 ------------------------------
106 -- Save_Style_Check_Options --
107 ------------------------------
109 procedure Save_Style_Check_Options (Options : out Style_Check_Options) is
112 procedure Add (C : Character; S : Boolean);
113 -- Add given character C to string if switch S is true
115 procedure Add_Nat (N : Nat);
116 -- Add given natural number to string
122 procedure Add (C : Character; S : Boolean) is
134 procedure Add_Nat (N : Nat) is
141 Options (P) := Character'Val (Character'Pos ('0') + N mod 10);
144 -- Start of processing for Save_Style_Check_Options
147 for K in Options'Range loop
151 Add (Character'Val (Style_Check_Indentation + Character'Pos ('0')),
152 Style_Check_Indentation /= 0);
154 Add ('a', Style_Check_Attribute_Casing);
155 Add ('A', Style_Check_Array_Attribute_Index);
156 Add ('b', Style_Check_Blanks_At_End);
157 Add ('B', Style_Check_Boolean_And_Or);
158 Add ('c', Style_Check_Comments);
159 Add ('d', Style_Check_DOS_Line_Terminator);
160 Add ('e', Style_Check_End_Labels);
161 Add ('f', Style_Check_Form_Feeds);
162 Add ('h', Style_Check_Horizontal_Tabs);
163 Add ('i', Style_Check_If_Then_Layout);
164 Add ('I', Style_Check_Mode_In);
165 Add ('k', Style_Check_Keyword_Casing);
166 Add ('l', Style_Check_Layout);
167 Add ('n', Style_Check_Standard);
168 Add ('o', Style_Check_Order_Subprograms);
169 Add ('O', Style_Check_Missing_Overriding);
170 Add ('p', Style_Check_Pragma_Casing);
171 Add ('r', Style_Check_References);
172 Add ('s', Style_Check_Specs);
173 Add ('S', Style_Check_Separate_Stmt_Lines);
174 Add ('t', Style_Check_Tokens);
175 Add ('u', Style_Check_Blank_Lines);
176 Add ('x', Style_Check_Xtra_Parens);
178 if Style_Check_Max_Line_Length then
181 Add_Nat (Style_Max_Line_Length);
184 if Style_Check_Max_Nesting_Level then
187 Add_Nat (Style_Max_Nesting_Level);
190 pragma Assert (P <= Options'Last);
192 while P < Options'Last loop
196 end Save_Style_Check_Options;
198 -------------------------------------
199 -- Set_Default_Style_Check_Options --
200 -------------------------------------
202 procedure Set_Default_Style_Check_Options is
204 Reset_Style_Check_Options;
205 Set_Style_Check_Options (Default_Style);
206 end Set_Default_Style_Check_Options;
208 ----------------------------------
209 -- Set_GNAT_Style_Check_Options --
210 ----------------------------------
212 procedure Set_GNAT_Style_Check_Options is
214 Reset_Style_Check_Options;
215 Set_Style_Check_Options (GNAT_Style);
216 end Set_GNAT_Style_Check_Options;
218 -----------------------------
219 -- Set_Style_Check_Options --
220 -----------------------------
222 -- Version used when no error checking is required
224 procedure Set_Style_Check_Options (Options : String) is
227 pragma Warnings (Off, EC);
229 Set_Style_Check_Options (Options, OK, EC);
231 end Set_Style_Check_Options;
233 -- Normal version with error checking
235 procedure Set_Style_Check_Options
238 Err_Col : out Natural)
242 On : Boolean := True;
243 -- Set to False if minus encountered
244 -- Set to True if plus encountered
246 Last_Option : Character := ' ';
247 -- Set to last character encountered
249 procedure Add_Img (N : Natural);
250 -- Concatenates image of N at end of Style_Msg_Buf
252 procedure Bad_Style_Switch (Msg : String);
253 -- Called if bad style switch found. Msg is set in Style_Msg_Buf and
254 -- Style_Msg_Len. OK is set False.
260 procedure Add_Img (N : Natural) is
266 Style_Msg_Len := Style_Msg_Len + 1;
267 Style_Msg_Buf (Style_Msg_Len) :=
268 Character'Val (N mod 10 + Character'Pos ('0'));
271 ----------------------
272 -- Bad_Style_Switch --
273 ----------------------
275 procedure Bad_Style_Switch (Msg : String) is
278 Style_Msg_Len := Msg'Length;
279 Style_Msg_Buf (1 .. Style_Msg_Len) := Msg;
280 end Bad_Style_Switch;
282 -- Start of processing for Set_Style_Check_Options
285 Err_Col := Options'First;
286 while Err_Col <= Options'Last loop
287 C := Options (Err_Col);
289 Err_Col := Err_Col + 1;
291 -- Turning switches on
303 Style_Check_Indentation :=
304 Character'Pos (C) - Character'Pos ('0');
307 Style_Check_Attribute_Casing := True;
310 Style_Check_Array_Attribute_Index := True;
313 Style_Check_Blanks_At_End := True;
316 Style_Check_Boolean_And_Or := True;
319 Style_Check_Comments := True;
322 Style_Check_DOS_Line_Terminator := True;
325 Style_Check_End_Labels := True;
328 Style_Check_Form_Feeds := True;
331 Set_GNAT_Style_Check_Options;
334 Style_Check_Horizontal_Tabs := True;
337 Style_Check_If_Then_Layout := True;
340 Style_Check_Mode_In := True;
343 Style_Check_Keyword_Casing := True;
346 Style_Check_Layout := True;
349 Style_Max_Nesting_Level := 0;
351 if Err_Col > Options'Last
352 or else Options (Err_Col) not in '0' .. '9'
354 Bad_Style_Switch ("invalid nesting level");
359 Style_Max_Nesting_Level :=
360 Style_Max_Nesting_Level * 10 +
361 Character'Pos (Options (Err_Col)) - Character'Pos ('0');
363 if Style_Max_Nesting_Level > 999 then
365 ("max nesting level (999) exceeded in style check");
369 Err_Col := Err_Col + 1;
370 exit when Err_Col > Options'Last
371 or else Options (Err_Col) not in '0' .. '9';
374 Style_Check_Max_Nesting_Level := Style_Max_Nesting_Level /= 0;
377 Style_Check_Max_Line_Length := True;
378 Style_Max_Line_Length := 79;
381 Style_Max_Line_Length := 0;
383 if Err_Col > Options'Last
384 or else Options (Err_Col) not in '0' .. '9'
387 ("invalid line length in style check");
392 Style_Max_Line_Length :=
393 Style_Max_Line_Length * 10 +
394 Character'Pos (Options (Err_Col)) - Character'Pos ('0');
396 if Style_Max_Line_Length > Int (Max_Line_Length) then
398 Style_Msg_Buf (1 .. 27) := "max line length allowed is ";
400 Add_Img (Natural (Max_Line_Length));
404 Err_Col := Err_Col + 1;
405 exit when Err_Col > Options'Last
406 or else Options (Err_Col) not in '0' .. '9';
409 Style_Check_Max_Line_Length := Style_Max_Line_Length /= 0;
412 Style_Check_Standard := True;
415 Reset_Style_Check_Options;
418 Style_Check_Order_Subprograms := True;
421 Style_Check_Missing_Overriding := True;
424 Style_Check_Pragma_Casing := True;
427 Style_Check_References := True;
430 Style_Check_Specs := True;
433 Style_Check_Separate_Stmt_Lines := True;
436 Style_Check_Tokens := True;
439 Style_Check_Blank_Lines := True;
442 Style_Check_Xtra_Parens := True;
445 Set_Default_Style_Check_Options;
451 Err_Col := Err_Col - 1;
452 Bad_Style_Switch ("invalid style switch: " & C);
456 -- Turning switches off
468 Style_Check_Indentation := 0;
471 Style_Check_Attribute_Casing := False;
474 Style_Check_Array_Attribute_Index := False;
477 Style_Check_Blanks_At_End := False;
480 Style_Check_Boolean_And_Or := False;
483 Style_Check_Comments := False;
486 Style_Check_DOS_Line_Terminator := False;
489 Style_Check_End_Labels := False;
492 Style_Check_Form_Feeds := False;
495 Reset_Style_Check_Options;
498 Style_Check_Horizontal_Tabs := False;
501 Style_Check_If_Then_Layout := False;
504 Style_Check_Mode_In := False;
507 Style_Check_Keyword_Casing := False;
510 Style_Check_Layout := False;
513 Style_Max_Nesting_Level := 0;
516 Style_Check_Max_Line_Length := False;
519 Style_Max_Line_Length := 0;
520 Style_Check_Max_Line_Length := False;
523 Style_Check_Standard := False;
526 Style_Check_Order_Subprograms := False;
529 Style_Check_Pragma_Casing := False;
532 Style_Check_References := False;
535 Style_Check_Specs := False;
538 Style_Check_Separate_Stmt_Lines := False;
541 Style_Check_Tokens := False;
544 Style_Check_Blank_Lines := False;
547 Style_Check_Xtra_Parens := False;
553 Err_Col := Err_Col - 1;
554 Bad_Style_Switch ("invalid style switch: " & C);
560 -- Turn on style checking if other than N at end of string
562 Style_Check := (Last_Option /= 'N');
564 end Set_Style_Check_Options;