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 -- Warning! Error messages can be generated during Gigi processing by direct
27 -- calls to error message routines, so it is essential that the processing
28 -- in this body be consistent with the requirements for the Gigi processing
29 -- environment, and that in particular, no disallowed table expansion is
32 with Casing; use Casing;
33 with Debug; use Debug;
34 with Err_Vars; use Err_Vars;
35 with Namet; use Namet;
37 with Output; use Output;
38 with Sinput; use Sinput;
39 with Snames; use Snames;
40 with Targparm; use Targparm;
41 with Uintp; use Uintp;
43 package body Erroutc is
49 procedure Add_Class is
54 Get_Name_String (Name_Class);
55 Set_Casing (Identifier_Casing (Flag_Source), Mixed_Case);
60 ----------------------
61 -- Buffer_Ends_With --
62 ----------------------
64 function Buffer_Ends_With (S : String) return Boolean is
65 Len : constant Natural := S'Length;
69 and then Msg_Buffer (Msglen - Len) = ' '
70 and then Msg_Buffer (Msglen - Len + 1 .. Msglen) = S;
77 procedure Buffer_Remove (S : String) is
79 if Buffer_Ends_With (S) then
80 Msglen := Msglen - S'Length;
84 -----------------------------
85 -- Check_Duplicate_Message --
86 -----------------------------
88 procedure Check_Duplicate_Message (M1, M2 : Error_Msg_Id) is
89 L1, L2 : Error_Msg_Id;
90 N1, N2 : Error_Msg_Id;
92 procedure Delete_Msg (Delete, Keep : Error_Msg_Id);
93 -- Called to delete message Delete, keeping message Keep. Marks
94 -- all messages of Delete with deleted flag set to True, and also
95 -- makes sure that for the error messages that are retained the
96 -- preferred message is the one retained (we prefer the shorter
97 -- one in the case where one has an Instance tag). Note that we
98 -- always know that Keep has at least as many continuations as
99 -- Delete (since we always delete the shorter sequence).
105 procedure Delete_Msg (Delete, Keep : Error_Msg_Id) is
113 Errors.Table (D).Deleted := True;
115 -- Adjust error message count
117 if Errors.Table (D).Warn or else Errors.Table (D).Style then
118 Warnings_Detected := Warnings_Detected - 1;
121 Total_Errors_Detected := Total_Errors_Detected - 1;
123 if Errors.Table (D).Serious then
124 Serious_Errors_Detected := Serious_Errors_Detected - 1;
128 -- Substitute shorter of the two error messages
130 if Errors.Table (K).Text'Length > Errors.Table (D).Text'Length then
131 Errors.Table (K).Text := Errors.Table (D).Text;
134 D := Errors.Table (D).Next;
135 K := Errors.Table (K).Next;
137 if D = No_Error_Msg or else not Errors.Table (D).Msg_Cont then
143 -- Start of processing for Check_Duplicate_Message
146 -- Both messages must be non-continuation messages and not deleted
148 if Errors.Table (M1).Msg_Cont
149 or else Errors.Table (M2).Msg_Cont
150 or else Errors.Table (M1).Deleted
151 or else Errors.Table (M2).Deleted
156 -- Definitely not equal if message text does not match
158 if not Same_Error (M1, M2) then
162 -- Same text. See if all continuations are also identical
168 N1 := Errors.Table (L1).Next;
169 N2 := Errors.Table (L2).Next;
171 -- If M1 continuations have run out, we delete M1, either the
172 -- messages have the same number of continuations, or M2 has
173 -- more and we prefer the one with more anyway.
175 if N1 = No_Error_Msg or else not Errors.Table (N1).Msg_Cont then
179 -- If M2 continuations have run out, we delete M2
181 elsif N2 = No_Error_Msg or else not Errors.Table (N2).Msg_Cont then
185 -- Otherwise see if continuations are the same, if not, keep both
186 -- sequences, a curious case, but better to keep everything!
188 elsif not Same_Error (N1, N2) then
191 -- If continuations are the same, continue scan
198 end Check_Duplicate_Message;
200 ------------------------
201 -- Compilation_Errors --
202 ------------------------
204 function Compilation_Errors return Boolean is
206 return Total_Errors_Detected /= 0
207 or else (Warnings_Detected /= 0
208 and then Warning_Mode = Treat_As_Error);
209 end Compilation_Errors;
215 procedure Debug_Output (N : Node_Id) is
218 Write_Str ("*** following error message posted on node id = #");
229 procedure dmsg (Id : Error_Msg_Id) is
230 E : Error_Msg_Object renames Errors.Table (Id);
233 w ("Dumping error message, Id = ", Int (Id));
234 w (" Text = ", E.Text.all);
235 w (" Next = ", Int (E.Next));
236 w (" Sfile = ", Int (E.Sfile));
240 Write_Location (E.Sptr);
245 Write_Location (E.Optr);
248 w (" Line = ", Int (E.Line));
249 w (" Col = ", Int (E.Col));
250 w (" Warn = ", E.Warn);
251 w (" Style = ", E.Style);
252 w (" Serious = ", E.Serious);
253 w (" Uncond = ", E.Uncond);
254 w (" Msg_Cont = ", E.Msg_Cont);
255 w (" Deleted = ", E.Deleted);
264 function Get_Location (E : Error_Msg_Id) return Source_Ptr is
266 return Errors.Table (E).Sptr;
273 function Get_Msg_Id return Error_Msg_Id is
278 -----------------------
279 -- Output_Error_Msgs --
280 -----------------------
282 procedure Output_Error_Msgs (E : in out Error_Msg_Id) is
288 Mult_Flags : Boolean := False;
293 -- Skip deleted messages at start
295 if Errors.Table (S).Deleted then
296 Set_Next_Non_Deleted_Msg (S);
299 -- Figure out if we will place more than one error flag on this line
302 while T /= No_Error_Msg
303 and then Errors.Table (T).Line = Errors.Table (E).Line
304 and then Errors.Table (T).Sfile = Errors.Table (E).Sfile
306 if Errors.Table (T).Sptr > Errors.Table (E).Sptr then
310 Set_Next_Non_Deleted_Msg (T);
313 -- Output the error flags. The circuit here makes sure that the tab
314 -- characters in the original line are properly accounted for. The
315 -- eight blanks at the start are to match the line number.
317 if not Debug_Flag_2 then
319 P := Line_Start (Errors.Table (E).Sptr);
322 -- Loop through error messages for this line to place flags
325 while T /= No_Error_Msg
326 and then Errors.Table (T).Line = Errors.Table (E).Line
327 and then Errors.Table (T).Sfile = Errors.Table (E).Sfile
329 -- Loop to output blanks till current flag position
331 while P < Errors.Table (T).Sptr loop
332 if Source_Text (Errors.Table (T).Sfile) (P) = ASCII.HT then
333 Write_Char (ASCII.HT);
341 -- Output flag (unless already output, this happens if more
342 -- than one error message occurs at the same flag position).
344 if P = Errors.Table (T).Sptr then
345 if (Flag_Num = 1 and then not Mult_Flags)
350 Write_Char (Character'Val (Character'Pos ('0') + Flag_Num));
356 Set_Next_Non_Deleted_Msg (T);
357 Flag_Num := Flag_Num + 1;
363 -- Now output the error messages
366 while T /= No_Error_Msg
367 and then Errors.Table (T).Line = Errors.Table (E).Line
368 and then Errors.Table (T).Sfile = Errors.Table (E).Sfile
374 while Column < 74 loop
382 Set_Next_Non_Deleted_Msg (T);
386 end Output_Error_Msgs;
388 ------------------------
389 -- Output_Line_Number --
390 ------------------------
392 procedure Output_Line_Number (L : Logical_Line_Number) is
393 D : Int; -- next digit
394 C : Character; -- next character
395 Z : Boolean; -- flag for zero suppress
396 N, M : Int; -- temporaries
399 if L = No_Line_Number then
420 C := Character'Val (D + 48);
428 end Output_Line_Number;
430 ---------------------
431 -- Output_Msg_Text --
432 ---------------------
434 procedure Output_Msg_Text (E : Error_Msg_Id) is
435 Offs : constant Nat := Column - 1;
436 -- Offset to start of message, used for continuations
439 -- Maximum characters to output on next line
442 -- Maximum total length of lines
444 Txt : constant String_Ptr := Errors.Table (E).Text;
445 Len : constant Natural := Txt'Length;
451 if Error_Msg_Line_Length = 0 then
454 Length := Error_Msg_Line_Length;
457 Max := Integer (Length - Column + 1);
459 -- For warning message, add "warning: " unless msg starts with "info: "
461 if Errors.Table (E).Warn then
462 if Len < 6 or else Txt (Txt'First .. Txt'First + 5) /= "info: " then
463 Write_Str ("warning: ");
467 -- No prefix needed for style message, since "(style)" is there already
469 elsif Errors.Table (E).Style then
472 -- All other cases, add "error: "
474 elsif Opt.Unique_Error_Tag then
475 Write_Str ("error: ");
479 -- Here we have to split the message up into multiple lines
483 -- Make sure we do not have ludicrously small line
485 Max := Integer'Max (Max, 20);
487 -- If remaining text fits, output it respecting LF and we are done
489 if Len - Ptr < Max then
490 for J in Ptr .. Len loop
491 if Txt (J) = ASCII.LF then
495 Write_Char (Txt (J));
506 -- First scan forward looking for a hard end of line
508 for Scan in Ptr .. Ptr + Max - 1 loop
509 if Txt (Scan) = ASCII.LF then
516 -- Otherwise scan backwards looking for a space
518 for Scan in reverse Ptr .. Ptr + Max - 1 loop
519 if Txt (Scan) = ' ' then
526 -- If we fall through, no space, so split line arbitrarily
528 Split := Ptr + Max - 1;
533 if Start <= Split then
534 Write_Line (Txt (Start .. Split));
538 Max := Integer (Length - Column + 1);
546 procedure Purge_Messages (From : Source_Ptr; To : Source_Ptr) is
549 function To_Be_Purged (E : Error_Msg_Id) return Boolean;
550 -- Returns True for a message that is to be purged. Also adjusts
551 -- error counts appropriately.
557 function To_Be_Purged (E : Error_Msg_Id) return Boolean is
560 and then Errors.Table (E).Sptr > From
561 and then Errors.Table (E).Sptr < To
563 if Errors.Table (E).Warn or else Errors.Table (E).Style then
564 Warnings_Detected := Warnings_Detected - 1;
567 Total_Errors_Detected := Total_Errors_Detected - 1;
569 if Errors.Table (E).Serious then
570 Serious_Errors_Detected := Serious_Errors_Detected - 1;
581 -- Start of processing for Purge_Messages
584 while To_Be_Purged (First_Error_Msg) loop
585 First_Error_Msg := Errors.Table (First_Error_Msg).Next;
588 E := First_Error_Msg;
589 while E /= No_Error_Msg loop
590 while To_Be_Purged (Errors.Table (E).Next) loop
591 Errors.Table (E).Next :=
592 Errors.Table (Errors.Table (E).Next).Next;
595 E := Errors.Table (E).Next;
603 function Same_Error (M1, M2 : Error_Msg_Id) return Boolean is
604 Msg1 : constant String_Ptr := Errors.Table (M1).Text;
605 Msg2 : constant String_Ptr := Errors.Table (M2).Text;
607 Msg2_Len : constant Integer := Msg2'Length;
608 Msg1_Len : constant Integer := Msg1'Length;
614 (Msg1_Len - 10 > Msg2_Len
616 Msg2.all = Msg1.all (1 .. Msg2_Len)
618 Msg1 (Msg2_Len + 1 .. Msg2_Len + 10) = ", instance")
620 (Msg2_Len - 10 > Msg1_Len
622 Msg1.all = Msg2.all (1 .. Msg1_Len)
624 Msg2 (Msg1_Len + 1 .. Msg1_Len + 10) = ", instance");
631 procedure Set_Msg_Blank is
634 and then Msg_Buffer (Msglen) /= ' '
635 and then Msg_Buffer (Msglen) /= '('
636 and then Msg_Buffer (Msglen) /= '-'
637 and then not Manual_Quote_Mode
643 -------------------------------
644 -- Set_Msg_Blank_Conditional --
645 -------------------------------
647 procedure Set_Msg_Blank_Conditional is
650 and then Msg_Buffer (Msglen) /= ' '
651 and then Msg_Buffer (Msglen) /= '('
652 and then Msg_Buffer (Msglen) /= '"'
653 and then not Manual_Quote_Mode
657 end Set_Msg_Blank_Conditional;
663 procedure Set_Msg_Char (C : Character) is
666 -- The check for message buffer overflow is needed to deal with cases
667 -- where insertions get too long (in particular a child unit name can
670 if Msglen < Max_Msg_Length then
671 Msglen := Msglen + 1;
672 Msg_Buffer (Msglen) := C;
676 ---------------------------------
677 -- Set_Msg_Insertion_File_Name --
678 ---------------------------------
680 procedure Set_Msg_Insertion_File_Name is
682 if Error_Msg_File_1 = No_File then
685 elsif Error_Msg_File_1 = Error_File_Name then
687 Set_Msg_Str ("<error>");
691 Get_Name_String (Error_Msg_File_1);
697 -- The following assignments ensure that the second and third {
698 -- insertion characters will correspond to the Error_Msg_File_2 and
699 -- Error_Msg_File_3 values and We suppress possible validity checks in
700 -- case operating in -gnatVa mode, and Error_Msg_File_2 or
701 -- Error_Msg_File_3 is not needed and has not been set.
704 pragma Suppress (Range_Check);
706 Error_Msg_File_1 := Error_Msg_File_2;
707 Error_Msg_File_2 := Error_Msg_File_3;
709 end Set_Msg_Insertion_File_Name;
711 -----------------------------------
712 -- Set_Msg_Insertion_Line_Number --
713 -----------------------------------
715 procedure Set_Msg_Insertion_Line_Number (Loc, Flag : Source_Ptr) is
716 Sindex_Loc : Source_File_Index;
717 Sindex_Flag : Source_File_Index;
720 -- Outputs "at " unless last characters in buffer are " from ". Certain
721 -- messages read better with from than at.
730 or else Msg_Buffer (Msglen - 5 .. Msglen) /= " from "
736 -- Start of processing for Set_Msg_Insertion_Line_Number
741 if Loc = No_Location then
743 Set_Msg_Str ("unknown location");
745 elsif Loc = System_Location then
746 Set_Msg_Str ("in package System");
747 Set_Msg_Insertion_Run_Time_Name;
749 elsif Loc = Standard_Location then
750 Set_Msg_Str ("in package Standard");
752 elsif Loc = Standard_ASCII_Location then
753 Set_Msg_Str ("in package Standard.ASCII");
756 -- Add "at file-name:" if reference is to other than the source
757 -- file in which the error message is placed. Note that we check
758 -- full file names, rather than just the source indexes, to
759 -- deal with generic instantiations from the current file.
761 Sindex_Loc := Get_Source_File_Index (Loc);
762 Sindex_Flag := Get_Source_File_Index (Flag);
764 if Full_File_Name (Sindex_Loc) /= Full_File_Name (Sindex_Flag) then
767 (Reference_Name (Get_Source_File_Index (Loc)));
771 -- If in current file, add text "at line "
775 Set_Msg_Str ("line ");
778 -- Output line number for reference
780 Set_Msg_Int (Int (Get_Logical_Line_Number (Loc)));
782 -- Deal with the instantiation case. We may have a reference to,
783 -- e.g. a type, that is declared within a generic template, and
784 -- what we are really referring to is the occurrence in an instance.
785 -- In this case, the line number of the instantiation is also of
786 -- interest, and we add a notation:
790 -- where xxx is a line number output using this same routine (and
791 -- the recursion can go further if the instantiation is itself in
792 -- a generic template).
794 -- The flag location passed to us in this situation is indeed the
795 -- line number within the template, but as described in Sinput.L
796 -- (file sinput-l.ads, section "Handling Generic Instantiations")
797 -- we can retrieve the location of the instantiation itself from
798 -- this flag location value.
800 -- Note: this processing is suppressed if Suppress_Instance_Location
801 -- is set True. This is used to prevent redundant annotations of the
802 -- location of the instantiation in the case where we are placing
803 -- the messages on the instantiation in any case.
805 if Instantiation (Sindex_Loc) /= No_Location
806 and then not Suppress_Instance_Location
808 Set_Msg_Str (", instance ");
809 Set_Msg_Insertion_Line_Number (Instantiation (Sindex_Loc), Flag);
812 end Set_Msg_Insertion_Line_Number;
814 ----------------------------
815 -- Set_Msg_Insertion_Name --
816 ----------------------------
818 procedure Set_Msg_Insertion_Name is
820 if Error_Msg_Name_1 = No_Name then
823 elsif Error_Msg_Name_1 = Error_Name then
825 Set_Msg_Str ("<error>");
828 Set_Msg_Blank_Conditional;
829 Get_Unqualified_Decoded_Name_String (Error_Msg_Name_1);
831 -- Remove %s or %b at end. These come from unit names. If the
832 -- caller wanted the (unit) or (body), then they would have used
833 -- the $ insertion character. Certainly no error message should
834 -- ever have %b or %s explicitly occurring.
837 and then Name_Buffer (Name_Len - 1) = '%'
838 and then (Name_Buffer (Name_Len) = 'b'
840 Name_Buffer (Name_Len) = 's')
842 Name_Len := Name_Len - 2;
845 -- Remove upper case letter at end, again, we should not be getting
846 -- such names, and what we hope is that the remainder makes sense.
849 and then Name_Buffer (Name_Len) in 'A' .. 'Z'
851 Name_Len := Name_Len - 1;
854 -- If operator name or character literal name, just print it as is
855 -- Also print as is if it ends in a right paren (case of x'val(nnn))
857 if Name_Buffer (1) = '"'
858 or else Name_Buffer (1) = '''
859 or else Name_Buffer (Name_Len) = ')'
863 -- Else output with surrounding quotes in proper casing mode
866 Set_Casing (Identifier_Casing (Flag_Source), Mixed_Case);
873 -- The following assignments ensure that the second and third percent
874 -- insertion characters will correspond to the Error_Msg_Name_2 and
875 -- Error_Msg_Name_3 as required. We suppress possible validity checks in
876 -- case operating in -gnatVa mode, and Error_Msg_Name_1/2 is not needed
877 -- and has not been set.
880 pragma Suppress (Range_Check);
882 Error_Msg_Name_1 := Error_Msg_Name_2;
883 Error_Msg_Name_2 := Error_Msg_Name_3;
885 end Set_Msg_Insertion_Name;
887 ------------------------------------
888 -- Set_Msg_Insertion_Name_Literal --
889 ------------------------------------
891 procedure Set_Msg_Insertion_Name_Literal is
893 if Error_Msg_Name_1 = No_Name then
896 elsif Error_Msg_Name_1 = Error_Name then
898 Set_Msg_Str ("<error>");
902 Get_Name_String (Error_Msg_Name_1);
908 -- The following assignments ensure that the second and third % or %%
909 -- insertion characters will correspond to the Error_Msg_Name_2 and
910 -- Error_Msg_Name_3 values and We suppress possible validity checks in
911 -- case operating in -gnatVa mode, and Error_Msg_Name_2 or
912 -- Error_Msg_Name_3 is not needed and has not been set.
915 pragma Suppress (Range_Check);
917 Error_Msg_Name_1 := Error_Msg_Name_2;
918 Error_Msg_Name_2 := Error_Msg_Name_3;
920 end Set_Msg_Insertion_Name_Literal;
922 -------------------------------------
923 -- Set_Msg_Insertion_Reserved_Name --
924 -------------------------------------
926 procedure Set_Msg_Insertion_Reserved_Name is
928 Set_Msg_Blank_Conditional;
929 Get_Name_String (Error_Msg_Name_1);
931 Set_Casing (Keyword_Casing (Flag_Source), All_Lower_Case);
934 end Set_Msg_Insertion_Reserved_Name;
936 -------------------------------------
937 -- Set_Msg_Insertion_Reserved_Word --
938 -------------------------------------
940 procedure Set_Msg_Insertion_Reserved_Word
945 Set_Msg_Blank_Conditional;
948 while J <= Text'Last and then Text (J) in 'A' .. 'Z' loop
949 Add_Char_To_Name_Buffer (Text (J));
953 -- Here is where we make the special exception for RM
955 if Name_Len = 2 and then Name_Buffer (1 .. 2) = "RM" then
958 -- We make a similar exception for ALFA
960 elsif Name_Len = 4 and then Name_Buffer (1 .. 4) = "ALFA" then
963 -- Neither RM nor ALFA: case appropriately and add surrounding quotes
966 Set_Casing (Keyword_Casing (Flag_Source), All_Lower_Case);
971 end Set_Msg_Insertion_Reserved_Word;
973 -------------------------------------
974 -- Set_Msg_Insertion_Run_Time_Name --
975 -------------------------------------
977 procedure Set_Msg_Insertion_Run_Time_Name is
979 if Targparm.Run_Time_Name_On_Target /= No_Name then
980 Set_Msg_Blank_Conditional;
982 Get_Name_String (Targparm.Run_Time_Name_On_Target);
983 Set_Casing (Mixed_Case);
984 Set_Msg_Str (Name_Buffer (1 .. Name_Len));
987 end Set_Msg_Insertion_Run_Time_Name;
989 ----------------------------
990 -- Set_Msg_Insertion_Uint --
991 ----------------------------
993 procedure Set_Msg_Insertion_Uint is
996 UI_Image (Error_Msg_Uint_1);
998 for J in 1 .. UI_Image_Length loop
999 Set_Msg_Char (UI_Image_Buffer (J));
1002 -- The following assignment ensures that a second caret insertion
1003 -- character will correspond to the Error_Msg_Uint_2 parameter. We
1004 -- suppress possible validity checks in case operating in -gnatVa mode,
1005 -- and Error_Msg_Uint_2 is not needed and has not been set.
1008 pragma Suppress (Range_Check);
1010 Error_Msg_Uint_1 := Error_Msg_Uint_2;
1012 end Set_Msg_Insertion_Uint;
1018 procedure Set_Msg_Int (Line : Int) is
1021 Set_Msg_Int (Line / 10);
1024 Set_Msg_Char (Character'Val (Character'Pos ('0') + (Line rem 10)));
1027 -------------------------
1028 -- Set_Msg_Name_Buffer --
1029 -------------------------
1031 procedure Set_Msg_Name_Buffer is
1033 for J in 1 .. Name_Len loop
1034 Set_Msg_Char (Name_Buffer (J));
1036 end Set_Msg_Name_Buffer;
1042 procedure Set_Msg_Quote is
1044 if not Manual_Quote_Mode then
1053 procedure Set_Msg_Str (Text : String) is
1055 for J in Text'Range loop
1056 Set_Msg_Char (Text (J));
1060 ------------------------------
1061 -- Set_Next_Non_Deleted_Msg --
1062 ------------------------------
1064 procedure Set_Next_Non_Deleted_Msg (E : in out Error_Msg_Id) is
1066 if E = No_Error_Msg then
1071 E := Errors.Table (E).Next;
1072 exit when E = No_Error_Msg or else not Errors.Table (E).Deleted;
1075 end Set_Next_Non_Deleted_Msg;
1077 ------------------------------
1078 -- Set_Specific_Warning_Off --
1079 ------------------------------
1081 procedure Set_Specific_Warning_Off
1087 Specific_Warnings.Append
1089 Msg => new String'(Msg),
1090 Stop => Source_Last (Current_Source_File),
1094 end Set_Specific_Warning_Off;
1096 -----------------------------
1097 -- Set_Specific_Warning_On --
1098 -----------------------------
1100 procedure Set_Specific_Warning_On
1106 for J in 1 .. Specific_Warnings.Last loop
1108 SWE : Specific_Warning_Entry renames Specific_Warnings.Table (J);
1110 if Msg = SWE.Msg.all
1111 and then Loc > SWE.Start
1113 and then Get_Source_File_Index (SWE.Start) =
1114 Get_Source_File_Index (Loc)
1120 -- If a config pragma is specifically cancelled, consider
1121 -- that it is no longer active as a configuration pragma.
1123 SWE.Config := False;
1130 end Set_Specific_Warning_On;
1132 ---------------------------
1133 -- Set_Warnings_Mode_Off --
1134 ---------------------------
1136 procedure Set_Warnings_Mode_Off (Loc : Source_Ptr) is
1138 -- Don't bother with entries from instantiation copies, since we
1139 -- will already have a copy in the template, which is what matters
1141 if Instantiation (Get_Source_File_Index (Loc)) /= No_Location then
1145 -- If last entry in table already covers us, this is a redundant
1146 -- pragma Warnings (Off) and can be ignored. This also handles the
1147 -- case where all warnings are suppressed by command line switch.
1149 if Warnings.Last >= Warnings.First
1150 and then Warnings.Table (Warnings.Last).Start <= Loc
1151 and then Loc <= Warnings.Table (Warnings.Last).Stop
1155 -- Otherwise establish a new entry, extending from the location of
1156 -- the pragma to the end of the current source file. This ending
1157 -- point will be adjusted by a subsequent pragma Warnings (On).
1160 Warnings.Increment_Last;
1161 Warnings.Table (Warnings.Last).Start := Loc;
1162 Warnings.Table (Warnings.Last).Stop :=
1163 Source_Last (Current_Source_File);
1165 end Set_Warnings_Mode_Off;
1167 --------------------------
1168 -- Set_Warnings_Mode_On --
1169 --------------------------
1171 procedure Set_Warnings_Mode_On (Loc : Source_Ptr) is
1173 -- Don't bother with entries from instantiation copies, since we
1174 -- will already have a copy in the template, which is what matters
1176 if Instantiation (Get_Source_File_Index (Loc)) /= No_Location then
1180 -- Nothing to do unless command line switch to suppress all warnings
1181 -- is off, and the last entry in the warnings table covers this
1182 -- pragma Warnings (On), in which case adjust the end point.
1184 if (Warnings.Last >= Warnings.First
1185 and then Warnings.Table (Warnings.Last).Start <= Loc
1186 and then Loc <= Warnings.Table (Warnings.Last).Stop)
1187 and then Warning_Mode /= Suppress
1189 Warnings.Table (Warnings.Last).Stop := Loc;
1191 end Set_Warnings_Mode_On;
1193 ------------------------------------
1194 -- Test_Style_Warning_Serious_Msg --
1195 ------------------------------------
1197 procedure Test_Style_Warning_Serious_Msg (Msg : String) is
1199 if Msg (Msg'First) = '\' then
1203 Is_Serious_Error := True;
1204 Is_Warning_Msg := False;
1207 (Msg'Length > 7 and then Msg (Msg'First .. Msg'First + 6) = "(style)");
1209 if Is_Style_Msg then
1210 Is_Serious_Error := False;
1213 for J in Msg'Range loop
1215 and then (J = Msg'First or else Msg (J - 1) /= ''')
1217 Is_Warning_Msg := True;
1220 and then (J = Msg'First or else Msg (J - 1) /= ''')
1222 Is_Warning_Msg := Error_Msg_Warn;
1225 and then (J = Msg'First or else Msg (J - 1) /= ''')
1227 Is_Serious_Error := False;
1231 if Is_Warning_Msg or Is_Style_Msg then
1232 Is_Serious_Error := False;
1234 end Test_Style_Warning_Serious_Msg;
1236 --------------------------------
1237 -- Validate_Specific_Warnings --
1238 --------------------------------
1240 procedure Validate_Specific_Warnings (Eproc : Error_Msg_Proc) is
1242 for J in Specific_Warnings.First .. Specific_Warnings.Last loop
1244 SWE : Specific_Warning_Entry renames Specific_Warnings.Table (J);
1246 if not SWE.Config then
1249 ("?pragma Warnings Off with no matching Warnings On",
1251 elsif not SWE.Used then
1253 ("?no warning suppressed by this pragma", SWE.Start);
1258 end Validate_Specific_Warnings;
1260 -------------------------------------
1261 -- Warning_Specifically_Suppressed --
1262 -------------------------------------
1264 function Warning_Specifically_Suppressed
1266 Msg : String_Ptr) return Boolean
1268 function Matches (S : String; P : String) return Boolean;
1269 -- Returns true if the String S patches the pattern P, which can contain
1270 -- wild card chars (*). The entire pattern must match the entire string.
1276 function Matches (S : String; P : String) return Boolean is
1277 Slast : constant Natural := S'Last;
1278 PLast : constant Natural := P'Last;
1280 SPtr : Natural := S'First;
1281 PPtr : Natural := P'First;
1284 -- Loop advancing through characters of string and pattern
1289 -- Return True if pattern is a single asterisk
1291 if PPtr = PLast and then P (PPtr) = '*' then
1294 -- Return True if both pattern and string exhausted
1296 elsif PPtr > PLast and then SPtr > Slast then
1299 -- Return False, if one exhausted and not the other
1301 elsif PPtr > PLast or else SPtr > Slast then
1304 -- Case where pattern starts with asterisk
1306 elsif P (PPtr) = '*' then
1308 -- Try all possible starting positions in S for match with
1309 -- the remaining characters of the pattern. This is the
1310 -- recursive call that implements the scanner backup.
1312 for J in SPtr .. Slast loop
1313 if Matches (S (J .. Slast), P (PPtr + 1 .. PLast)) then
1320 -- Dealt with end of string and *, advance if we have a match
1322 elsif S (SPtr) = P (PPtr) then
1326 -- If first characters do not match, that's decisive
1334 -- Start of processing for Warning_Specifically_Suppressed
1337 -- Loop through specific warning suppression entries
1339 for J in Specific_Warnings.First .. Specific_Warnings.Last loop
1341 SWE : Specific_Warning_Entry renames Specific_Warnings.Table (J);
1344 -- Pragma applies if it is a configuration pragma, or if the
1345 -- location is in range of a specific non-configuration pragma.
1348 or else (SWE.Start <= Loc and then Loc <= SWE.Stop)
1350 if Matches (Msg.all, SWE.Msg.all) then
1359 end Warning_Specifically_Suppressed;
1361 -------------------------
1362 -- Warnings_Suppressed --
1363 -------------------------
1365 function Warnings_Suppressed (Loc : Source_Ptr) return Boolean is
1367 if Warning_Mode = Suppress then
1371 -- Loop through table of ON/OFF warnings
1373 for J in Warnings.First .. Warnings.Last loop
1374 if Warnings.Table (J).Start <= Loc
1375 and then Loc <= Warnings.Table (J).Stop
1382 end Warnings_Suppressed;