1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2008, 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 -- This version of the Style package implements the standard GNAT style
27 -- checking rules. For documentation of these rules, see comments on the
28 -- individual procedures.
30 with Casing
; use Casing
;
31 with Csets
; use Csets
;
32 with Err_Vars
; use Err_Vars
;
34 with Scans
; use Scans
;
35 with Sinput
; use Sinput
;
36 with Stylesw
; use Stylesw
;
38 package body Styleg
is
42 Blank_Lines
: Nat
:= 0;
43 -- Counts number of empty lines seen. Reset to zero if a non-empty line
44 -- is encountered. Used to check for trailing blank lines in Check_EOF,
45 -- and for multiple blank lines.
47 Blank_Line_Location
: Source_Ptr
;
48 -- Remembers location of first blank line in a series. Used to issue an
49 -- appropriate diagnostic if subsequent blank lines or the end of file
52 -----------------------
53 -- Local Subprograms --
54 -----------------------
56 procedure Check_No_Space_After
;
57 -- Checks that there is a non-white space character after the current
58 -- token, or white space followed by a comment, or the end of line.
59 -- Issue error message if not.
61 procedure Check_No_Space_Before
;
62 -- Check that token is first token on line, or else is not preceded
63 -- by white space. Signal error of space not allowed if not.
65 procedure Check_Separate_Stmt_Lines_Cont
;
66 -- Non-inlined continuation of Check_Separate_Stmt_Lines
68 function Determine_Token_Casing
return Casing_Type
;
69 -- Determine casing of current token
71 procedure Error_Space_Not_Allowed
(S
: Source_Ptr
);
72 -- Posts an error message indicating that a space is not allowed
73 -- at the given source location.
75 procedure Error_Space_Required
(S
: Source_Ptr
);
76 -- Posts an error message indicating that a space is required at
77 -- the given source location.
79 function Is_White_Space
(C
: Character) return Boolean;
80 pragma Inline
(Is_White_Space
);
81 -- Returns True for space, HT, VT or FF, False otherwise
83 procedure Require_Following_Space
;
84 pragma Inline
(Require_Following_Space
);
85 -- Require token to be followed by white space. Used only if in GNAT
86 -- style checking mode.
88 procedure Require_Preceding_Space
;
89 pragma Inline
(Require_Preceding_Space
);
90 -- Require token to be preceded by white space. Used only if in GNAT
91 -- style checking mode.
93 ----------------------
94 -- Check_Abs_Or_Not --
95 ----------------------
97 -- In check tokens mode (-gnatyt), ABS/NOT must be followed by a space
99 procedure Check_Abs_Not
is
101 if Style_Check_Tokens
then
102 if Source
(Scan_Ptr
) > ' ' then
103 Error_Space_Required
(Scan_Ptr
);
108 ----------------------
109 -- Check_Apostrophe --
110 ----------------------
112 -- Do not allow space before or after apostrophe
114 procedure Check_Apostrophe
is
116 if Style_Check_Tokens
then
117 Check_No_Space_After
;
119 end Check_Apostrophe
;
125 -- In check tokens mode (-gnatys), arrow must be surrounded by spaces
127 procedure Check_Arrow
is
129 if Style_Check_Tokens
then
130 Require_Preceding_Space
;
131 Require_Following_Space
;
135 --------------------------
136 -- Check_Attribute_Name --
137 --------------------------
139 -- In check attribute casing mode (-gnatya), attribute names must be
140 -- mixed case, i.e. start with an upper case letter, and otherwise
141 -- lower case, except after an underline character.
143 procedure Check_Attribute_Name
(Reserved
: Boolean) is
144 pragma Warnings
(Off
, Reserved
);
146 if Style_Check_Attribute_Casing
then
147 if Determine_Token_Casing
/= Mixed_Case
then
148 Error_Msg_SC
("(style) bad capitalization, mixed case required");
151 end Check_Attribute_Name
;
153 ---------------------------
154 -- Check_Binary_Operator --
155 ---------------------------
157 -- In check token mode (-gnatyt), binary operators other than the special
158 -- case of exponentiation require surrounding space characters.
160 procedure Check_Binary_Operator
is
162 if Style_Check_Tokens
then
163 Require_Preceding_Space
;
164 Require_Following_Space
;
166 end Check_Binary_Operator
;
172 -- In check token mode (-gnatyt), box must be preceded by a space or by
173 -- a left parenthesis. Spacing checking on the surrounding tokens takes
174 -- care of the remaining checks.
176 procedure Check_Box
is
178 if Style_Check_Tokens
then
179 if Prev_Token
/= Tok_Left_Paren
then
180 Require_Preceding_Space
;
189 -- In check token mode (-gnatyt), colon must be surrounded by spaces
191 procedure Check_Colon
is
193 if Style_Check_Tokens
then
194 Require_Preceding_Space
;
195 Require_Following_Space
;
199 -----------------------
200 -- Check_Colon_Equal --
201 -----------------------
203 -- In check token mode (-gnatyt), := must be surrounded by spaces
205 procedure Check_Colon_Equal
is
207 if Style_Check_Tokens
then
208 Require_Preceding_Space
;
209 Require_Following_Space
;
211 end Check_Colon_Equal
;
217 -- In check token mode (-gnatyt), comma must be either the first
218 -- token on a line, or be preceded by a non-blank character.
219 -- It must also always be followed by a blank.
221 procedure Check_Comma
is
223 if Style_Check_Tokens
then
224 Check_No_Space_Before
;
226 if Source
(Scan_Ptr
) > ' ' then
227 Error_Space_Required
(Scan_Ptr
);
236 -- In check comment mode (-gnatyc) there are several requirements on the
237 -- format of comments. The following are permissible comment formats:
239 -- 1. Any comment that is not at the start of a line, i.e. where the
240 -- initial minuses are not the first non-blank characters on the
241 -- line must have at least one blank after the second minus or a
242 -- special character as defined in rule 5.
244 -- 2. A row of all minuses of any length is permitted (see procedure
245 -- box above in the source of this routine).
247 -- 3. A comment line starting with two minuses and a space, and ending
248 -- with a space and two minuses. Again see the procedure title box
249 -- immediately above in the source.
251 -- 4. A full line comment where two spaces follow the two minus signs.
252 -- This is the normal comment format in GNAT style, as typified by
253 -- the comments you are reading now.
255 -- 5. A full line comment where the first character after the second
256 -- minus is a special character, i.e. a character in the ASCII
257 -- range 16#21#..16#2F# or 16#3A#..16#3F#. This allows special
258 -- comments, such as those generated by gnatprep, or those that
259 -- appear in the SPARK annotation language to be accepted.
261 -- Note: for GNAT internal files (-gnatg switch set on for the
262 -- compilation), the only special sequence recognized and allowed
263 -- is --! as generated by gnatprep.
265 -- 6. In addition, the comment must be properly indented if comment
266 -- indentation checking is active (Style_Check_Indentation non-zero).
267 -- Either the start column must be a multiple of this indentation,
268 -- or the indentation must match that of the next non-blank line.
270 procedure Check_Comment
is
274 function Is_Box_Comment
return Boolean;
275 -- Returns True if the last two characters on the line are -- which
276 -- characterizes a box comment (as for example follows this spec).
278 function Is_Special_Character
(C
: Character) return Boolean;
279 -- Determines if C is a special character (see rule 5 above)
281 function Same_Column_As_Next_Non_Blank_Line
return Boolean;
282 -- Called for a full line comment. If the indentation of this comment
283 -- matches that of the next non-blank line in the source, then True is
284 -- returned, otherwise False.
290 function Is_Box_Comment
return Boolean is
294 -- Do we need to worry about UTF_32 line terminators here ???
297 while Source
(S
) not in Line_Terminator
loop
301 return Source
(S
- 1) = '-' and then Source
(S
- 2) = '-';
304 --------------------------
305 -- Is_Special_Character --
306 --------------------------
308 function Is_Special_Character
(C
: Character) return Boolean is
314 Character'Pos (C
) in 16#
21#
.. 16#
2F#
316 Character'Pos (C
) in 16#
3A#
.. 16#
3F#
;
318 end Is_Special_Character
;
320 ----------------------------------------
321 -- Same_Column_As_Next_Non_Blank_Line --
322 ----------------------------------------
324 function Same_Column_As_Next_Non_Blank_Line
return Boolean is
328 -- Step to end of line
331 while Source
(P
) not in Line_Terminator
loop
335 -- Step past blanks, and line terminators (UTF_32 case???)
337 while Source
(P
) <= ' ' and then Source
(P
) /= EOF
loop
343 return Get_Column_Number
(Scan_Ptr
) = Get_Column_Number
(P
);
344 end Same_Column_As_Next_Non_Blank_Line
;
346 -- Start of processing for Check_Comment
349 -- Can never have a non-blank character preceding the first minus
351 if Style_Check_Comments
then
352 if Scan_Ptr
> Source_First
(Current_Source_File
)
353 and then Source
(Scan_Ptr
- 1) > ' '
355 Error_Msg_S
("(style) space required");
359 -- For a comment that is not at the start of the line, the only
360 -- requirement is that we cannot have a non-blank character after
361 -- the second minus sign or a special character.
363 if Scan_Ptr
/= First_Non_Blank_Location
then
364 if Style_Check_Comments
then
365 if Source
(Scan_Ptr
+ 2) > ' '
366 and then not Is_Special_Character
(Source
(Scan_Ptr
+ 2))
368 Error_Msg
("(style) space required", Scan_Ptr
+ 2);
374 -- Case of a comment that is at the start of a line
377 -- First check, must be in appropriately indented column
379 if Style_Check_Indentation
/= 0 then
380 if Start_Column
rem Style_Check_Indentation
/= 0 then
381 if not Same_Column_As_Next_Non_Blank_Line
then
382 Error_Msg_S
("(style) bad column");
389 -- If we are not checking comments, nothing more to do
391 if not Style_Check_Comments
then
395 -- Case of not followed by a blank. Usually wrong, but there are
396 -- some exceptions that we permit.
398 if Source
(Scan_Ptr
+ 2) /= ' ' then
399 C
:= Source
(Scan_Ptr
+ 2);
401 -- Case of -- all on its own on a line is OK
407 -- Case of --x, x special character is OK (gnatprep/SPARK/etc.)
408 -- This is not permitted in internal GNAT implementation units
409 -- except for the case of --! as used by gnatprep output.
411 if Is_Special_Character
(C
) then
415 -- The only other case in which we allow a character after
416 -- the -- other than a space is when we have a row of minus
417 -- signs (case of header lines for a box comment for example).
420 while Source
(S
) >= ' ' loop
421 if Source
(S
) /= '-' then
422 if Is_Box_Comment
then
423 Error_Space_Required
(Scan_Ptr
+ 2);
425 Error_Msg
("(style) two spaces required", Scan_Ptr
+ 2);
434 -- If we are followed by a blank, then the comment is OK if the
435 -- character following this blank is another blank or a format
438 elsif Source
(Scan_Ptr
+ 3) <= ' ' then
441 -- Here is the case where we only have one blank after the two
442 -- minus signs, which is an error unless the line ends with two
443 -- minus signs, the case of a box comment.
445 elsif not Is_Box_Comment
then
446 Error_Space_Required
(Scan_Ptr
+ 3);
455 -- In check token mode (-gnatyt), colon must be surrounded by spaces
457 procedure Check_Dot_Dot
is
459 if Style_Check_Tokens
then
460 Require_Preceding_Space
;
461 Require_Following_Space
;
469 -- In check blanks at end mode, check no blank lines precede the EOF
471 procedure Check_EOF
is
473 if Style_Check_Blank_Lines
then
475 -- We expect one blank line, from the EOF, but no more than one
477 if Blank_Lines
= 2 then
479 ("(style) blank line not allowed at end of file",
480 Blank_Line_Location
);
482 elsif Blank_Lines
>= 3 then
484 ("(style) blank lines not allowed at end of file",
485 Blank_Line_Location
);
490 -----------------------------------
491 -- Check_Exponentiation_Operator --
492 -----------------------------------
494 -- No spaces are required for the ** operator in GNAT style check mode
496 procedure Check_Exponentiation_Operator
is
499 end Check_Exponentiation_Operator
;
505 -- In check horizontal tab mode (-gnatyh), tab characters are not allowed
507 procedure Check_HT
is
509 if Style_Check_Horizontal_Tabs
then
510 Error_Msg_S
("(style) horizontal tab not allowed");
514 -----------------------
515 -- Check_Indentation --
516 -----------------------
518 -- In check indentation mode (-gnatyn for n a digit), a new statement or
519 -- declaration is required to start in a column that is a multiple of the
520 -- indentation amount.
522 procedure Check_Indentation
is
524 if Style_Check_Indentation
/= 0 then
525 if Token_Ptr
= First_Non_Blank_Location
526 and then Start_Column
rem Style_Check_Indentation
/= 0
528 Error_Msg_SC
("(style) bad indentation");
531 end Check_Indentation
;
533 ----------------------
534 -- Check_Left_Paren --
535 ----------------------
537 -- In tone check mode (-gnatyt), left paren must not be preceded by an
538 -- identifier character or digit (a separating space is required) and
539 -- may never be followed by a space.
541 procedure Check_Left_Paren
is
543 if Style_Check_Tokens
then
544 if Token_Ptr
> Source_First
(Current_Source_File
)
545 and then Identifier_Char
(Source
(Token_Ptr
- 1))
547 Error_Space_Required
(Token_Ptr
);
550 Check_No_Space_After
;
552 end Check_Left_Paren
;
554 ---------------------------
555 -- Check_Line_Max_Length --
556 ---------------------------
558 -- In check max line length mode (-gnatym), the line length must
559 -- not exceed the permitted maximum value.
561 procedure Check_Line_Max_Length
(Len
: Int
) is
563 if Style_Check_Max_Line_Length
then
564 if Len
> Style_Max_Line_Length
then
566 ("(style) this line is too long",
567 Current_Line_Start
+ Source_Ptr
(Style_Max_Line_Length
));
570 end Check_Line_Max_Length
;
572 ---------------------------
573 -- Check_Line_Terminator --
574 ---------------------------
576 -- In check blanks at end mode (-gnatyb), lines may not end with a
579 -- In check form feeds mode (-gnatyf), the line terminator may not
580 -- be either of the characters FF or VT.
582 -- In check DOS line terminators node (-gnatyd), the line terminator
583 -- must be a single LF, without a following CR.
585 procedure Check_Line_Terminator
(Len
: Int
) is
589 -- Length of line (adjusted down for blanks at end of line)
592 -- Reset count of blank lines if first line
594 if Get_Logical_Line_Number
(Scan_Ptr
) = 1 then
598 -- Check FF/VT terminators
600 if Style_Check_Form_Feeds
then
601 if Source
(Scan_Ptr
) = ASCII
.FF
then
602 Error_Msg_S
("(style) form feed not allowed");
603 elsif Source
(Scan_Ptr
) = ASCII
.VT
then
604 Error_Msg_S
("(style) vertical tab not allowed");
608 -- Check DOS line terminator (ignore EOF, since we only get called
609 -- with an EOF if it is the last character in the buffer, and was
610 -- therefore not present in the sources
612 if Style_Check_DOS_Line_Terminator
then
613 if Source
(Scan_Ptr
) = EOF
then
615 elsif Source
(Scan_Ptr
) /= LF
616 or else Source
(Scan_Ptr
+ 1) = CR
618 Error_Msg_S
("(style) incorrect line terminator");
622 -- Remove trailing spaces
625 while L
> 0 and then Is_White_Space
(Source
(S
- 1)) loop
630 -- Issue message for blanks at end of line if option enabled
632 if Style_Check_Blanks_At_End
and then L
< Len
then
634 ("(style) trailing spaces not permitted", S
);
637 -- Deal with empty (blank) line
641 -- Increment blank line count
643 Blank_Lines
:= Blank_Lines
+ 1;
645 -- If first blank line, record location for later error message
647 if Blank_Lines
= 1 then
648 Blank_Line_Location
:= Scan_Ptr
;
651 -- Non-blank line, check for previous multiple blank lines
654 if Style_Check_Blank_Lines
and then Blank_Lines
> 1 then
656 ("(style) multiple blank lines", Blank_Line_Location
);
659 -- And reset blank line count
663 end Check_Line_Terminator
;
665 --------------------------
666 -- Check_No_Space_After --
667 --------------------------
669 procedure Check_No_Space_After
is
673 if Is_White_Space
(Source
(Scan_Ptr
)) then
675 -- Allow one or more spaces if followed by comment
679 if Source
(S
) = '-' and then Source
(S
+ 1) = '-' then
682 elsif Is_White_Space
(Source
(S
)) then
690 Error_Space_Not_Allowed
(Scan_Ptr
);
692 end Check_No_Space_After
;
694 ---------------------------
695 -- Check_No_Space_Before --
696 ---------------------------
698 procedure Check_No_Space_Before
is
700 if Token_Ptr
> First_Non_Blank_Location
701 and then Source
(Token_Ptr
- 1) <= ' '
703 Error_Space_Not_Allowed
(Token_Ptr
- 1);
705 end Check_No_Space_Before
;
707 -----------------------
708 -- Check_Pragma_Name --
709 -----------------------
711 -- In check pragma casing mode (-gnatyp), pragma names must be mixed
712 -- case, i.e. start with an upper case letter, and otherwise lower case,
713 -- except after an underline character.
715 procedure Check_Pragma_Name
is
717 if Style_Check_Pragma_Casing
then
718 if Determine_Token_Casing
/= Mixed_Case
then
719 Error_Msg_SC
("(style) bad capitalization, mixed case required");
722 end Check_Pragma_Name
;
724 -----------------------
725 -- Check_Right_Paren --
726 -----------------------
728 -- In check tokens mode (-gnatyt), right paren must never be preceded by
729 -- a space unless it is the initial non-blank character on the line.
731 procedure Check_Right_Paren
is
733 if Style_Check_Tokens
then
734 Check_No_Space_Before
;
736 end Check_Right_Paren
;
738 ---------------------
739 -- Check_Semicolon --
740 ---------------------
742 -- In check tokens mode (-gnatyt), semicolon does not permit a preceding
743 -- space and a following space is required.
745 procedure Check_Semicolon
is
747 if Style_Check_Tokens
then
748 Check_No_Space_Before
;
750 if Source
(Scan_Ptr
) > ' ' then
751 Error_Space_Required
(Scan_Ptr
);
756 -------------------------------
757 -- Check_Separate_Stmt_Lines --
758 -------------------------------
760 procedure Check_Separate_Stmt_Lines
is
762 if Style_Check_Separate_Stmt_Lines
then
763 Check_Separate_Stmt_Lines_Cont
;
765 end Check_Separate_Stmt_Lines
;
767 ------------------------------------
768 -- Check_Separate_Stmt_Lines_Cont --
769 ------------------------------------
771 procedure Check_Separate_Stmt_Lines_Cont
is
775 -- Skip past white space
778 while Is_White_Space
(Source
(S
)) loop
782 -- Line terminator is OK
784 if Source
(S
) in Line_Terminator
then
789 elsif Source
(S
) = '-' and then Source
(S
+ 1) = '-' then
792 -- ABORT keyword is OK after THEN (THEN ABORT case)
794 elsif Token
= Tok_Then
795 and then (Source
(S
+ 0) = 'a' or else Source
(S
+ 0) = 'A')
796 and then (Source
(S
+ 1) = 'b' or else Source
(S
+ 1) = 'B')
797 and then (Source
(S
+ 2) = 'o' or else Source
(S
+ 2) = 'O')
798 and then (Source
(S
+ 3) = 'r' or else Source
(S
+ 3) = 'R')
799 and then (Source
(S
+ 4) = 't' or else Source
(S
+ 4) = 'T')
800 and then (Source
(S
+ 5) in Line_Terminator
801 or else Is_White_Space
(Source
(S
+ 5)))
805 -- PRAGMA keyword is OK after ELSE
807 elsif Token
= Tok_Else
808 and then (Source
(S
+ 0) = 'p' or else Source
(S
+ 0) = 'P')
809 and then (Source
(S
+ 1) = 'r' or else Source
(S
+ 1) = 'R')
810 and then (Source
(S
+ 2) = 'a' or else Source
(S
+ 2) = 'A')
811 and then (Source
(S
+ 3) = 'g' or else Source
(S
+ 3) = 'G')
812 and then (Source
(S
+ 4) = 'm' or else Source
(S
+ 4) = 'M')
813 and then (Source
(S
+ 5) = 'a' or else Source
(S
+ 5) = 'A')
814 and then (Source
(S
+ 6) in Line_Terminator
815 or else Is_White_Space
(Source
(S
+ 6)))
819 -- Otherwise we have the style violation we are looking for
822 if Token
= Tok_Then
then
824 ("(style) no statements may follow THEN on same line", S
);
827 ("(style) no statements may follow ELSE on same line", S
);
830 end Check_Separate_Stmt_Lines_Cont
;
836 -- In check if then layout mode (-gnatyi), we expect a THEN keyword
837 -- to appear either on the same line as the IF, or on a separate line
838 -- after multiple conditions. In any case, it may not appear on the
839 -- line immediately following the line with the IF.
841 procedure Check_Then
(If_Loc
: Source_Ptr
) is
843 if Style_Check_If_Then_Layout
then
844 if Get_Physical_Line_Number
(Token_Ptr
) =
845 Get_Physical_Line_Number
(If_Loc
) + 1
847 Error_Msg_SC
("(style) misplaced THEN");
852 -------------------------------
853 -- Check_Unary_Plus_Or_Minus --
854 -------------------------------
856 -- In check token mode (-gnatyt), unary plus or minus must not be
857 -- followed by a space.
859 procedure Check_Unary_Plus_Or_Minus
is
861 if Style_Check_Tokens
then
862 Check_No_Space_After
;
864 end Check_Unary_Plus_Or_Minus
;
866 ------------------------
867 -- Check_Vertical_Bar --
868 ------------------------
870 -- In check token mode (-gnatyt), vertical bar must be surrounded by spaces
872 procedure Check_Vertical_Bar
is
874 if Style_Check_Tokens
then
875 Require_Preceding_Space
;
876 Require_Following_Space
;
878 end Check_Vertical_Bar
;
880 -----------------------
881 -- Check_Xtra_Parens --
882 -----------------------
884 procedure Check_Xtra_Parens
(Loc
: Source_Ptr
) is
886 if Style_Check_Xtra_Parens
then
887 Error_Msg
("redundant parentheses?", Loc
);
889 end Check_Xtra_Parens
;
891 ----------------------------
892 -- Determine_Token_Casing --
893 ----------------------------
895 function Determine_Token_Casing
return Casing_Type
is
897 return Determine_Casing
(Source
(Token_Ptr
.. Scan_Ptr
- 1));
898 end Determine_Token_Casing
;
900 -----------------------------
901 -- Error_Space_Not_Allowed --
902 -----------------------------
904 procedure Error_Space_Not_Allowed
(S
: Source_Ptr
) is
906 Error_Msg
("(style) space not allowed", S
);
907 end Error_Space_Not_Allowed
;
909 --------------------------
910 -- Error_Space_Required --
911 --------------------------
913 procedure Error_Space_Required
(S
: Source_Ptr
) is
915 Error_Msg
("(style) space required", S
);
916 end Error_Space_Required
;
922 function Is_White_Space
(C
: Character) return Boolean is
924 return C
= ' ' or else C
= HT
;
931 function Mode_In_Check
return Boolean is
933 return Style_Check
and Style_Check_Mode_In
;
940 -- In check end/exit labels mode (-gnatye), always require the name of
941 -- a subprogram or package to be present on the END, so this is an error.
943 procedure No_End_Name
(Name
: Node_Id
) is
945 if Style_Check_End_Labels
then
946 Error_Msg_Node_1
:= Name
;
947 Error_Msg_SP
("(style) `END &` required");
955 -- In check end/exit labels mode (-gnatye), always require the name of
956 -- the loop to be present on the EXIT when exiting a named loop.
958 procedure No_Exit_Name
(Name
: Node_Id
) is
960 if Style_Check_End_Labels
then
961 Error_Msg_Node_1
:= Name
;
962 Error_Msg_SP
("(style) `EXIT &` required");
966 ----------------------------
967 -- Non_Lower_Case_Keyword --
968 ----------------------------
970 -- In check casing mode (-gnatyk), reserved keywords must be be spelled
971 -- in all lower case (excluding keywords range, access, delta and digits
972 -- used as attribute designators).
974 procedure Non_Lower_Case_Keyword
is
976 if Style_Check_Keyword_Casing
then
977 Error_Msg_SC
("(style) reserved words must be all lower case");
979 end Non_Lower_Case_Keyword
;
981 -----------------------------
982 -- Require_Following_Space --
983 -----------------------------
985 procedure Require_Following_Space
is
987 if Source
(Scan_Ptr
) > ' ' then
988 Error_Space_Required
(Scan_Ptr
);
990 end Require_Following_Space
;
992 -----------------------------
993 -- Require_Preceding_Space --
994 -----------------------------
996 procedure Require_Preceding_Space
is
998 if Token_Ptr
> Source_First
(Current_Source_File
)
999 and then Source
(Token_Ptr
- 1) > ' '
1001 Error_Space_Required
(Token_Ptr
);
1003 end Require_Preceding_Space
;
1005 ---------------------
1006 -- RM_Column_Check --
1007 ---------------------
1009 function RM_Column_Check
return Boolean is
1011 return Style_Check
and Style_Check_Layout
;
1012 end RM_Column_Check
;