1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2011, 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 -- Note: we intend GNAT_Style to also include the following, but we do
63 -- not yet have the whole tool suite clean with respect to this.
65 -- "B" & -- check boolean operators
67 -------------------------------
68 -- Reset_Style_Check_Options --
69 -------------------------------
71 procedure Reset_Style_Check_Options is
73 Style_Check_Indentation := 0;
74 Style_Check_Array_Attribute_Index := False;
75 Style_Check_Attribute_Casing := False;
76 Style_Check_Blanks_At_End := False;
77 Style_Check_Blank_Lines := False;
78 Style_Check_Boolean_And_Or := False;
79 Style_Check_Comments := False;
80 Style_Check_DOS_Line_Terminator := False;
81 Style_Check_End_Labels := False;
82 Style_Check_Form_Feeds := False;
83 Style_Check_Horizontal_Tabs := False;
84 Style_Check_If_Then_Layout := False;
85 Style_Check_Keyword_Casing := False;
86 Style_Check_Layout := False;
87 Style_Check_Max_Line_Length := False;
88 Style_Check_Max_Nesting_Level := False;
89 Style_Check_Missing_Overriding := False;
90 Style_Check_Mode_In := False;
91 Style_Check_Order_Subprograms := False;
92 Style_Check_Pragma_Casing := False;
93 Style_Check_References := False;
94 Style_Check_Separate_Stmt_Lines := False;
95 Style_Check_Specs := False;
96 Style_Check_Standard := False;
97 Style_Check_Tokens := False;
98 Style_Check_Xtra_Parens := False;
99 end Reset_Style_Check_Options;
101 ---------------------
102 -- RM_Column_Check --
103 ---------------------
105 function RM_Column_Check return Boolean is
107 return Style_Check and Style_Check_Layout;
110 ------------------------------
111 -- Save_Style_Check_Options --
112 ------------------------------
114 procedure Save_Style_Check_Options (Options : out Style_Check_Options) is
117 procedure Add (C : Character; S : Boolean);
118 -- Add given character C to string if switch S is true
120 procedure Add_Nat (N : Nat);
121 -- Add given natural number to string
127 procedure Add (C : Character; S : Boolean) is
139 procedure Add_Nat (N : Nat) is
146 Options (P) := Character'Val (Character'Pos ('0') + N mod 10);
149 -- Start of processing for Save_Style_Check_Options
152 for K in Options'Range loop
156 Add (Character'Val (Style_Check_Indentation + Character'Pos ('0')),
157 Style_Check_Indentation /= 0);
159 Add ('a', Style_Check_Attribute_Casing);
160 Add ('A', Style_Check_Array_Attribute_Index);
161 Add ('b', Style_Check_Blanks_At_End);
162 Add ('B', Style_Check_Boolean_And_Or);
164 if Style_Check_Comments_Spacing = 2 then
165 Add ('c', Style_Check_Comments);
166 elsif Style_Check_Comments_Spacing = 1 then
167 Add ('C', Style_Check_Comments);
170 Add ('d', Style_Check_DOS_Line_Terminator);
171 Add ('e', Style_Check_End_Labels);
172 Add ('f', Style_Check_Form_Feeds);
173 Add ('h', Style_Check_Horizontal_Tabs);
174 Add ('i', Style_Check_If_Then_Layout);
175 Add ('I', Style_Check_Mode_In);
176 Add ('k', Style_Check_Keyword_Casing);
177 Add ('l', Style_Check_Layout);
178 Add ('n', Style_Check_Standard);
179 Add ('o', Style_Check_Order_Subprograms);
180 Add ('O', Style_Check_Missing_Overriding);
181 Add ('p', Style_Check_Pragma_Casing);
182 Add ('r', Style_Check_References);
183 Add ('s', Style_Check_Specs);
184 Add ('S', Style_Check_Separate_Stmt_Lines);
185 Add ('t', Style_Check_Tokens);
186 Add ('u', Style_Check_Blank_Lines);
187 Add ('x', Style_Check_Xtra_Parens);
189 if Style_Check_Max_Line_Length then
192 Add_Nat (Style_Max_Line_Length);
195 if Style_Check_Max_Nesting_Level then
198 Add_Nat (Style_Max_Nesting_Level);
201 pragma Assert (P <= Options'Last);
203 while P < Options'Last loop
207 end Save_Style_Check_Options;
209 -------------------------------------
210 -- Set_Default_Style_Check_Options --
211 -------------------------------------
213 procedure Set_Default_Style_Check_Options is
215 Reset_Style_Check_Options;
216 Set_Style_Check_Options (Default_Style);
217 end Set_Default_Style_Check_Options;
219 ----------------------------------
220 -- Set_GNAT_Style_Check_Options --
221 ----------------------------------
223 procedure Set_GNAT_Style_Check_Options is
225 Reset_Style_Check_Options;
226 Set_Style_Check_Options (GNAT_Style);
227 end Set_GNAT_Style_Check_Options;
229 -----------------------------
230 -- Set_Style_Check_Options --
231 -----------------------------
233 -- Version used when no error checking is required
235 procedure Set_Style_Check_Options (Options : String) is
238 pragma Warnings (Off, EC);
240 Set_Style_Check_Options (Options, OK, EC);
242 end Set_Style_Check_Options;
244 -- Normal version with error checking
246 procedure Set_Style_Check_Options
249 Err_Col : out Natural)
253 On : Boolean := True;
254 -- Set to False if minus encountered
255 -- Set to True if plus encountered
257 Last_Option : Character := ' ';
258 -- Set to last character encountered
260 procedure Add_Img (N : Natural);
261 -- Concatenates image of N at end of Style_Msg_Buf
263 procedure Bad_Style_Switch (Msg : String);
264 -- Called if bad style switch found. Msg is set in Style_Msg_Buf and
265 -- Style_Msg_Len. OK is set False.
271 procedure Add_Img (N : Natural) is
277 Style_Msg_Len := Style_Msg_Len + 1;
278 Style_Msg_Buf (Style_Msg_Len) :=
279 Character'Val (N mod 10 + Character'Pos ('0'));
282 ----------------------
283 -- Bad_Style_Switch --
284 ----------------------
286 procedure Bad_Style_Switch (Msg : String) is
289 Style_Msg_Len := Msg'Length;
290 Style_Msg_Buf (1 .. Style_Msg_Len) := Msg;
291 end Bad_Style_Switch;
293 -- Start of processing for Set_Style_Check_Options
296 Err_Col := Options'First;
297 while Err_Col <= Options'Last loop
298 C := Options (Err_Col);
300 Err_Col := Err_Col + 1;
302 -- Turning switches on
314 Style_Check_Indentation :=
315 Character'Pos (C) - Character'Pos ('0');
318 Style_Check_Attribute_Casing := True;
321 Style_Check_Array_Attribute_Index := True;
324 Style_Check_Blanks_At_End := True;
327 Style_Check_Boolean_And_Or := True;
330 Style_Check_Comments := True;
331 Style_Check_Comments_Spacing := 2;
334 Style_Check_Comments := True;
335 Style_Check_Comments_Spacing := 1;
338 Style_Check_DOS_Line_Terminator := True;
341 Style_Check_End_Labels := True;
344 Style_Check_Form_Feeds := True;
347 Set_GNAT_Style_Check_Options;
350 Style_Check_Horizontal_Tabs := True;
353 Style_Check_If_Then_Layout := True;
356 Style_Check_Mode_In := True;
359 Style_Check_Keyword_Casing := True;
362 Style_Check_Layout := True;
365 Style_Max_Nesting_Level := 0;
367 if Err_Col > Options'Last
368 or else Options (Err_Col) not in '0' .. '9'
370 Bad_Style_Switch ("invalid nesting level");
375 Style_Max_Nesting_Level :=
376 Style_Max_Nesting_Level * 10 +
377 Character'Pos (Options (Err_Col)) - Character'Pos ('0');
379 if Style_Max_Nesting_Level > 999 then
381 ("max nesting level (999) exceeded in style check");
385 Err_Col := Err_Col + 1;
386 exit when Err_Col > Options'Last
387 or else Options (Err_Col) not in '0' .. '9';
390 Style_Check_Max_Nesting_Level := Style_Max_Nesting_Level /= 0;
393 Style_Check_Max_Line_Length := True;
394 Style_Max_Line_Length := 79;
397 Style_Max_Line_Length := 0;
399 if Err_Col > Options'Last
400 or else Options (Err_Col) not in '0' .. '9'
403 ("invalid line length in style check");
408 Style_Max_Line_Length :=
409 Style_Max_Line_Length * 10 +
410 Character'Pos (Options (Err_Col)) - Character'Pos ('0');
412 if Style_Max_Line_Length > Int (Max_Line_Length) then
414 Style_Msg_Buf (1 .. 27) := "max line length allowed is ";
416 Add_Img (Natural (Max_Line_Length));
420 Err_Col := Err_Col + 1;
421 exit when Err_Col > Options'Last
422 or else Options (Err_Col) not in '0' .. '9';
425 Style_Check_Max_Line_Length := Style_Max_Line_Length /= 0;
428 Style_Check_Standard := True;
431 Reset_Style_Check_Options;
434 Style_Check_Order_Subprograms := True;
437 Style_Check_Missing_Overriding := True;
440 Style_Check_Pragma_Casing := True;
443 Style_Check_References := True;
446 Style_Check_Specs := True;
449 Style_Check_Separate_Stmt_Lines := True;
452 Style_Check_Tokens := True;
455 Style_Check_Blank_Lines := True;
458 Style_Check_Xtra_Parens := True;
461 Set_Default_Style_Check_Options;
467 Err_Col := Err_Col - 1;
468 Bad_Style_Switch ("invalid style switch: " & C);
472 -- Turning switches off
484 Style_Check_Indentation := 0;
487 Style_Check_Attribute_Casing := False;
490 Style_Check_Array_Attribute_Index := False;
493 Style_Check_Blanks_At_End := False;
496 Style_Check_Boolean_And_Or := False;
499 Style_Check_Comments := False;
502 Style_Check_DOS_Line_Terminator := False;
505 Style_Check_End_Labels := False;
508 Style_Check_Form_Feeds := False;
511 Reset_Style_Check_Options;
514 Style_Check_Horizontal_Tabs := False;
517 Style_Check_If_Then_Layout := False;
520 Style_Check_Mode_In := False;
523 Style_Check_Keyword_Casing := False;
526 Style_Check_Layout := False;
529 Style_Max_Nesting_Level := 0;
532 Style_Check_Max_Line_Length := False;
535 Style_Max_Line_Length := 0;
536 Style_Check_Max_Line_Length := False;
539 Style_Check_Standard := False;
542 Style_Check_Order_Subprograms := False;
545 Style_Check_Missing_Overriding := False;
548 Style_Check_Pragma_Casing := False;
551 Style_Check_References := False;
554 Style_Check_Specs := False;
557 Style_Check_Separate_Stmt_Lines := False;
560 Style_Check_Tokens := False;
563 Style_Check_Blank_Lines := False;
566 Style_Check_Xtra_Parens := False;
572 Err_Col := Err_Col - 1;
573 Bad_Style_Switch ("invalid style switch: " & C);
579 -- Turn on style checking if other than N at end of string
581 Style_Check := (Last_Option /= 'N');
583 end Set_Style_Check_Options;