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;