1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1998-2007, 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 ------------------------------------------------------------------------------
27 with Output; use Output;
28 with Types; use Types;
30 with Unchecked_Deallocation;
32 with Ada.Strings.Fixed; use Ada.Strings.Fixed;
33 with Ada.Text_IO; use Ada.Text_IO;
35 with GNAT.Command_Line; use GNAT.Command_Line;
36 with GNAT.IO_Aux; use GNAT.IO_Aux;
38 package body Xref_Lib is
40 Type_Position : constant := 50;
41 -- Column for label identifying type of entity
47 Pipe : constant Character := '|';
48 -- First character on xref lines in the .ali file
50 No_Xref_Information : exception;
51 -- Exception raised when there is no cross-referencing information in
55 (Source : not null access String;
56 Ptr : in out Positive;
57 Skip_Continuation_Line : Boolean := False);
58 -- On return Source (Ptr) is the first character of the next line
59 -- or EOF. Source.all must be terminated by EOF.
61 -- If Skip_Continuation_Line is True, this subprogram skips as many
62 -- lines as required when the second or more lines starts with '.'
63 -- (continuation lines in ALI files).
65 function Current_Xref_File (File : ALI_File) return File_Reference;
66 -- Return the file matching the last 'X' line we found while parsing
69 function File_Name (File : ALI_File; Num : Positive) return File_Reference;
70 -- Returns the dependency file name number Num
72 function Get_Full_Type (Decl : Declaration_Reference) return String;
73 -- Returns the full type corresponding to a type letter as found in
79 Dependencies : Boolean := False);
80 -- Open a new ALI file. If Dependencies is True, the insert every library
81 -- file 'with'ed in the files database (used for gnatxref)
83 procedure Parse_Identifier_Info
84 (Pattern : Search_Pattern;
85 File : in out ALI_File;
86 Local_Symbols : Boolean;
87 Der_Info : Boolean := False;
88 Type_Tree : Boolean := False;
89 Wide_Search : Boolean := True;
90 Labels_As_Ref : Boolean := True);
91 -- Output the file and the line where the identifier was referenced,
92 -- If Local_Symbols is False then only the publicly visible symbols
95 -- If Labels_As_Ref is true, then the references to the entities after
96 -- the end statements ("end Foo") will be counted as actual references.
97 -- The entity will never be reported as unreferenced by gnatxref -u
100 (Source : not null access String;
101 Ptr : in out Positive;
102 Token_Ptr : out Positive);
103 -- Skips any separators and stores the start of the token in Token_Ptr.
104 -- Then stores the position of the next separator in Ptr. On return
105 -- Source (Token_Ptr .. Ptr - 1) is the token. Separators are space
106 -- and ASCII.HT. Parse_Token will never skip to the next line.
108 procedure Parse_Number
109 (Source : not null access String;
110 Ptr : in out Positive;
111 Number : out Natural);
112 -- Skips any separators and parses Source upto the first character that
113 -- is not a decimal digit. Returns value of parsed digits or 0 if none.
115 procedure Parse_X_Filename (File : in out ALI_File);
116 -- Reads and processes "X..." lines in the ALI file
117 -- and updates the File.X_File information.
119 procedure Skip_To_First_X_Line
120 (File : in out ALI_File;
123 -- Skip the lines in the ALI file until the first cross-reference line
124 -- (^X...) is found. Search is started from the beginning of the file.
125 -- If not such line is found, No_Xref_Information is raised.
126 -- If W_Lines is false, then the lines "^W" are not parsed.
127 -- If D_Lines is false, then the lines "^D" are not parsed.
134 (Pattern : in out Search_Pattern;
136 Glob : Boolean := False)
138 File_Start : Natural;
139 Line_Start : Natural;
141 Line_Num : Natural := 0;
142 Col_Num : Natural := 0;
144 File_Ref : File_Reference := Empty_File;
145 pragma Warnings (Off, File_Ref);
148 -- Find the end of the first item in Entity (pattern or file?)
149 -- If there is no ':', we only have a pattern
151 File_Start := Index (Entity, ":");
153 -- If the regular expression is invalid, just consider it as a string
155 if File_Start = 0 then
157 Pattern.Entity := Compile (Entity, Glob, False);
158 Pattern.Initialized := True;
161 when Error_In_Regexp =>
163 -- The basic idea is to insert a \ before every character
166 Tmp_Regexp : String (1 .. 2 * Entity'Length);
167 Index : Positive := 1;
170 for J in Entity'Range loop
171 Tmp_Regexp (Index) := '\';
172 Tmp_Regexp (Index + 1) := Entity (J);
176 Pattern.Entity := Compile (Tmp_Regexp, True, False);
177 Pattern.Initialized := True;
181 Set_Default_Match (True);
185 -- If there is a dot in the pattern, then it is a file name
188 Index (Entity (Entity'First .. File_Start - 1), ".") /= 0)
191 and then Index (Entity (Entity'First .. File_Start - 1),
194 Pattern.Entity := Compile (".*", False);
195 Pattern.Initialized := True;
196 File_Start := Entity'First;
199 -- If the regular expression is invalid, just consider it as a string
203 Compile (Entity (Entity'First .. File_Start - 1), Glob, False);
204 Pattern.Initialized := True;
207 when Error_In_Regexp =>
209 -- The basic idea is to insert a \ before every character
212 Tmp_Regexp : String (1 .. 2 * (File_Start - Entity'First));
213 Index : Positive := 1;
216 for J in Entity'First .. File_Start - 1 loop
217 Tmp_Regexp (Index) := '\';
218 Tmp_Regexp (Index + 1) := Entity (J);
222 Pattern.Entity := Compile (Tmp_Regexp, True, False);
223 Pattern.Initialized := True;
227 File_Start := File_Start + 1;
230 -- Parse the file name
232 Line_Start := Index (Entity (File_Start .. Entity'Last), ":");
234 -- Check if it was a disk:\directory item (for NT and OS/2)
236 if File_Start = Line_Start - 1
237 and then Line_Start < Entity'Last
238 and then Entity (Line_Start + 1) = '\'
240 Line_Start := Index (Entity (Line_Start + 1 .. Entity'Last), ":");
243 if Line_Start = 0 then
244 Line_Start := Entity'Length + 1;
246 elsif Line_Start /= Entity'Last then
247 Col_Start := Index (Entity (Line_Start + 1 .. Entity'Last), ":");
249 if Col_Start = 0 then
250 Col_Start := Entity'Last + 1;
253 if Col_Start > Line_Start + 1 then
255 Line_Num := Natural'Value
256 (Entity (Line_Start + 1 .. Col_Start - 1));
259 when Constraint_Error =>
260 raise Invalid_Argument;
264 if Col_Start < Entity'Last then
266 Col_Num := Natural'Value (Entity
267 (Col_Start + 1 .. Entity'Last));
270 when Constraint_Error => raise Invalid_Argument;
277 (Entity (File_Start .. Line_Start - 1), Visited => True);
278 Pattern.File_Ref := File_Ref;
280 Add_Line (Pattern.File_Ref, Line_Num, Col_Num);
284 (ALI_File_Name (Entity (File_Start .. Line_Start - 1)),
286 Emit_Warning => True);
293 procedure Add_Xref_File (File : String) is
294 File_Ref : File_Reference := Empty_File;
295 pragma Unreferenced (File_Ref);
297 Iterator : Expansion_Iterator;
299 procedure Add_Xref_File_Internal (File : String);
300 -- Do the actual addition of the file
302 ----------------------------
303 -- Add_Xref_File_Internal --
304 ----------------------------
306 procedure Add_Xref_File_Internal (File : String) is
308 -- Case where we have an ALI file, accept it even though this is
309 -- not official usage, since the intention is obvious
311 if Tail (File, 4) = ".ali" then
312 File_Ref := Add_To_Xref_File
313 (File, Visited => False, Emit_Warning => True);
315 -- Normal non-ali file case
318 File_Ref := Add_To_Xref_File (File, Visited => True);
320 File_Ref := Add_To_Xref_File
321 (ALI_File_Name (File),
322 Visited => False, Emit_Warning => True);
324 end Add_Xref_File_Internal;
326 -- Start of processing for Add_Xref_File
329 -- Check if we need to do the expansion
331 if Ada.Strings.Fixed.Index (File, "*") /= 0
332 or else Ada.Strings.Fixed.Index (File, "?") /= 0
334 Start_Expansion (Iterator, File);
338 S : constant String := Expansion (Iterator);
341 exit when S'Length = 0;
342 Add_Xref_File_Internal (S);
347 Add_Xref_File_Internal (File);
351 -----------------------
352 -- Current_Xref_File --
353 -----------------------
355 function Current_Xref_File (File : ALI_File) return File_Reference is
358 end Current_Xref_File;
360 --------------------------
361 -- Default_Project_File --
362 --------------------------
364 function Default_Project_File (Dir_Name : String) return String is
366 Dir_Ent : File_Name_String;
370 Open (My_Dir, Dir_Name);
373 Read (My_Dir, Dir_Ent, Last);
376 if Tail (Dir_Ent (1 .. Last), 4) = ".adp" then
378 -- The first project file found is the good one
381 return Dir_Ent (1 .. Last);
386 return String'(1 .. 0 => ' ');
389 when Directory_Error => return String'(1 .. 0 => ' ');
390 end Default_Project_File;
398 Num : Positive) return File_Reference
401 return File.Dep.Table (Num);
408 procedure Find_ALI_Files is
410 Dir_Ent : File_Name_String;
413 File_Ref : File_Reference;
414 pragma Unreferenced (File_Ref);
416 function Open_Next_Dir return Boolean;
417 -- Tries to open the next object directory, and return False if
418 -- the directory cannot be opened.
424 function Open_Next_Dir return Boolean is
426 -- Until we are able to open a new directory
430 Obj_Dir : constant String := Next_Obj_Dir;
433 -- Case of no more Obj_Dir lines
435 if Obj_Dir'Length = 0 then
439 Open (My_Dir.Dir, Obj_Dir);
444 -- Could not open the directory
446 when Directory_Error => null;
453 -- Start of processing for Find_ALI_Files
458 if Open_Next_Dir then
460 Read (My_Dir.Dir, Dir_Ent, Last);
465 if not Open_Next_Dir then
469 elsif Last > 4 and then Dir_Ent (Last - 3 .. Last) = ".ali" then
471 Add_To_Xref_File (Dir_Ent (1 .. Last), Visited => False);
481 function Get_Full_Type (Decl : Declaration_Reference) return String is
483 function Param_String return String;
484 -- Return the string to display depending on whether Decl is a
491 function Param_String return String is
493 if Is_Parameter (Decl) then
500 -- Start of processing for Get_Full_Type
503 case Get_Type (Decl) is
504 when 'A' => return "array type";
505 when 'B' => return "boolean type";
506 when 'C' => return "class-wide type";
507 when 'D' => return "decimal type";
508 when 'E' => return "enumeration type";
509 when 'F' => return "float type";
510 when 'I' => return "integer type";
511 when 'M' => return "modular type";
512 when 'O' => return "fixed type";
513 when 'P' => return "access type";
514 when 'R' => return "record type";
515 when 'S' => return "string type";
516 when 'T' => return "task type";
517 when 'W' => return "protected type";
519 when 'a' => return "array type";
520 when 'b' => return Param_String & "boolean object";
521 when 'c' => return Param_String & "class-wide object";
522 when 'd' => return Param_String & "decimal object";
523 when 'e' => return Param_String & "enumeration object";
524 when 'f' => return Param_String & "float object";
525 when 'i' => return Param_String & "integer object";
526 when 'm' => return Param_String & "modular object";
527 when 'o' => return Param_String & "fixed object";
528 when 'p' => return Param_String & "access object";
529 when 'r' => return Param_String & "record object";
530 when 's' => return Param_String & "string object";
531 when 't' => return Param_String & "task object";
532 when 'w' => return Param_String & "protected object";
533 when 'x' => return Param_String & "abstract procedure";
534 when 'y' => return Param_String & "abstract function";
536 when 'K' => return "package";
537 when 'k' => return "generic package";
538 when 'L' => return "statement label";
539 when 'l' => return "loop label";
540 when 'N' => return "named number";
541 when 'n' => return "enumeration literal";
542 when 'q' => return "block label";
543 when 'U' => return "procedure";
544 when 'u' => return "generic procedure";
545 when 'V' => return "function";
546 when 'v' => return "generic function";
547 when 'X' => return "exception";
548 when 'Y' => return "entry";
550 when '+' => return "private type";
552 -- The above should be the only possibilities, but for this kind
553 -- of informational output, we don't want to bomb if we find
554 -- something else, so just return three question marks when we
555 -- have an unknown Abbrev value
558 return "??? (" & Get_Type (Decl) & ")";
562 --------------------------
563 -- Skip_To_First_X_Line --
564 --------------------------
566 procedure Skip_To_First_X_Line
567 (File : in out ALI_File;
571 Ali : String_Access renames File.Buffer;
573 Ptr : Positive := Ali'First;
574 Num_Dependencies : Natural := 0;
575 File_Start : Positive;
577 Gnatchop_Offset : Integer;
578 Gnatchop_Name : Positive;
580 File_Ref : File_Reference;
581 pragma Unreferenced (File_Ref);
584 -- Read all the lines possibly processing with-clauses and dependency
585 -- information and exit on finding the first Xref line.
586 -- A fall-through of the loop means that there is no xref information
587 -- which is an error condition.
589 while Ali (Ptr) /= EOF loop
590 if D_Lines and then Ali (Ptr) = 'D' then
592 -- Found dependency information. Format looks like:
593 -- D src-nam time-stmp checksum [subunit-name] [line:file-name]
595 -- Skip the D and parse the filenam
598 Parse_Token (Ali, Ptr, Token);
602 Num_Dependencies := Num_Dependencies + 1;
603 Set_Last (File.Dep, Num_Dependencies);
605 Parse_Token (Ali, Ptr, Token); -- Skip time-stamp
606 Parse_Token (Ali, Ptr, Token); -- Skip checksum
607 Parse_Token (Ali, Ptr, Token); -- Read next entity on the line
609 if not (Ali (Token) in '0' .. '9') then
610 Parse_Token (Ali, Ptr, Token); -- Was a subunit name
613 -- Did we have a gnatchop-ed file with a pragma Source_Reference ?
615 Gnatchop_Offset := 0;
617 if Ali (Token) in '0' .. '9' then
618 Gnatchop_Name := Token;
619 while Ali (Gnatchop_Name) /= ':' loop
620 Gnatchop_Name := Gnatchop_Name + 1;
624 2 - Natural'Value (Ali (Token .. Gnatchop_Name - 1));
625 Token := Gnatchop_Name + 1;
628 File.Dep.Table (Num_Dependencies) := Add_To_Xref_File
629 (Ali (File_Start .. File_End),
630 Gnatchop_File => Ali (Token .. Ptr - 1),
631 Gnatchop_Offset => Gnatchop_Offset);
633 elsif W_Lines and then Ali (Ptr) = 'W' then
635 -- Found with-clause information. Format looks like:
636 -- "W debug%s debug.adb debug.ali"
638 -- Skip the W and parse the .ali filename (3rd token)
640 Parse_Token (Ali, Ptr, Token);
641 Parse_Token (Ali, Ptr, Token);
642 Parse_Token (Ali, Ptr, Token);
645 Add_To_Xref_File (Ali (Token .. Ptr - 1), Visited => False);
647 elsif Ali (Ptr) = 'X' then
649 -- Found a cross-referencing line - stop processing
651 File.Current_Line := Ptr;
652 File.Xref_Line := Ptr;
656 Parse_EOL (Ali, Ptr);
659 raise No_Xref_Information;
660 end Skip_To_First_X_Line;
669 Dependencies : Boolean := False)
671 Ali : String_Access renames File.Buffer;
674 if File.Buffer /= null then
681 Read_File (Name, Ali);
684 when Ada.Text_IO.Name_Error | Ada.Text_IO.End_Error =>
685 raise No_Xref_Information;
688 Skip_To_First_X_Line (File, D_Lines => True, W_Lines => Dependencies);
696 (Source : not null access String;
697 Ptr : in out Positive;
698 Skip_Continuation_Line : Boolean := False)
702 -- Skip to end of line
704 while Source (Ptr) /= ASCII.CR and then Source (Ptr) /= ASCII.LF
705 and then Source (Ptr) /= EOF
710 if Source (Ptr) /= EOF then
711 Ptr := Ptr + 1; -- skip CR or LF
714 -- Skip past CR/LF or LF/CR combination
716 if (Source (Ptr) = ASCII.CR or else Source (Ptr) = ASCII.LF)
717 and then Source (Ptr) /= Source (Ptr - 1)
722 exit when not Skip_Continuation_Line or else Source (Ptr) /= '.';
726 ---------------------------
727 -- Parse_Identifier_Info --
728 ---------------------------
730 procedure Parse_Identifier_Info
731 (Pattern : Search_Pattern;
732 File : in out ALI_File;
733 Local_Symbols : Boolean;
734 Der_Info : Boolean := False;
735 Type_Tree : Boolean := False;
736 Wide_Search : Boolean := True;
737 Labels_As_Ref : Boolean := True)
739 Ptr : Positive renames File.Current_Line;
740 Ali : String_Access renames File.Buffer;
742 E_Line : Natural; -- Line number of current entity
743 E_Col : Natural; -- Column number of current entity
744 E_Type : Character; -- Type of current entity
745 E_Name : Positive; -- Pointer to begin of entity name
746 E_Global : Boolean; -- True iff entity is global
748 R_Line : Natural; -- Line number of current reference
749 R_Col : Natural; -- Column number of current reference
750 R_Type : Character; -- Type of current reference
752 Decl_Ref : Declaration_Reference;
753 File_Ref : File_Reference := Current_Xref_File (File);
755 function Get_Symbol_Name (Eun, Line, Col : Natural) return String;
756 -- Returns the symbol name for the entity defined at the specified
757 -- line and column in the dependent unit number Eun. For this we need
758 -- to parse the ali file again because the parent entity is not in
759 -- the declaration table if it did not match the search pattern.
761 procedure Skip_To_Matching_Closing_Bracket;
762 -- When Ptr points to an opening square bracket, moves it to the
763 -- character following the matching closing bracket
765 ---------------------
766 -- Get_Symbol_Name --
767 ---------------------
769 function Get_Symbol_Name (Eun, Line, Col : Natural) return String is
771 E_Eun : Positive; -- Unit number of current entity
772 E_Line : Natural; -- Line number of current entity
773 E_Col : Natural; -- Column number of current entity
774 E_Name : Positive; -- Pointer to begin of entity name
777 -- Look for the X lines corresponding to unit Eun
780 if Ali (Ptr) = 'X' then
782 Parse_Number (Ali, Ptr, E_Eun);
783 exit when E_Eun = Eun;
786 Parse_EOL (Ali, Ptr, Skip_Continuation_Line => True);
789 -- Here we are in the right Ali section, we now look for the entity
790 -- declared at position (Line, Col).
793 Parse_Number (Ali, Ptr, E_Line);
794 exit when Ali (Ptr) = EOF;
796 Parse_Number (Ali, Ptr, E_Col);
797 exit when Ali (Ptr) = EOF;
800 if Line = E_Line and then Col = E_Col then
801 Parse_Token (Ali, Ptr, E_Name);
802 return Ali (E_Name .. Ptr - 1);
805 Parse_EOL (Ali, Ptr, Skip_Continuation_Line => True);
806 exit when Ali (Ptr) = EOF;
809 -- We were not able to find the symbol, this should not happend but
810 -- since we don't want to stop here we return a string of three
811 -- question marks as the symbol name.
816 --------------------------------------
817 -- Skip_To_Matching_Closing_Bracket --
818 --------------------------------------
820 procedure Skip_To_Matching_Closing_Bracket is
821 Num_Brackets : Natural;
825 while Num_Brackets /= 0 loop
827 if Ali (Ptr) = '[' then
828 Num_Brackets := Num_Brackets + 1;
829 elsif Ali (Ptr) = ']' then
830 Num_Brackets := Num_Brackets - 1;
835 end Skip_To_Matching_Closing_Bracket;
837 -- Start of processing for Parse_Identifier_Info
840 -- The identifier info looks like:
841 -- "38U9*Debug 12|36r6 36r19"
843 -- Extract the line, column and entity name information
845 Parse_Number (Ali, Ptr, E_Line);
847 if Ali (Ptr) > ' ' then
852 -- Ignore some of the entities (labels,...)
855 when 'l' | 'L' | 'q' =>
856 Parse_EOL (Ali, Ptr, Skip_Continuation_Line => True);
863 Parse_Number (Ali, Ptr, E_Col);
866 if Ali (Ptr) >= ' ' then
867 E_Global := (Ali (Ptr) = '*');
871 Parse_Token (Ali, Ptr, E_Name);
873 -- Exit if the symbol does not match
874 -- or if we have a local symbol and we do not want it
876 if (not Local_Symbols and not E_Global)
877 or else (Pattern.Initialized
878 and then not Match (Ali (E_Name .. Ptr - 1), Pattern.Entity))
879 or else (E_Name >= Ptr)
881 Decl_Ref := Add_Declaration
882 (File.X_File, Ali (E_Name .. Ptr - 1), E_Line, E_Col, E_Type,
883 Remove_Only => True);
884 Parse_EOL (Ali, Ptr, Skip_Continuation_Line => True);
888 -- Insert the declaration in the table
890 Decl_Ref := Add_Declaration
891 (File.X_File, Ali (E_Name .. Ptr - 1), E_Line, E_Col, E_Type);
893 if Ali (Ptr) = '[' then
894 Skip_To_Matching_Closing_Bracket;
898 or else Ali (Ptr) = '('
899 or else Ali (Ptr) = '{'
901 -- Here we have a type derivation information. The format is
902 -- <3|12I45> which means that the current entity is derived from the
903 -- type defined in unit number 3, line 12 column 45. The pipe and
904 -- unit number is optional. It is specified only if the parent type
905 -- is not defined in the current unit.
907 -- We also have the format for generic instantiations, as in
908 -- 7a5*Uid(3|5I8[4|2]) 2|4r74
910 -- We could also have something like
912 -- that indicates that I derives from the predefined type integer.
916 if Ali (Ptr) in '0' .. '9' then
917 Parse_Derived_Info : declare
918 P_Line : Natural; -- parent entity line
919 P_Column : Natural; -- parent entity column
920 P_Eun : Positive; -- parent entity file number
923 Parse_Number (Ali, Ptr, P_Line);
925 -- If we have a pipe then the first number was the unit number
927 if Ali (Ptr) = '|' then
931 -- Now we have the line number
933 Parse_Number (Ali, Ptr, P_Line);
936 -- We don't have a unit number specified, so we set P_Eun to
939 for K in Dependencies_Tables.First .. Last (File.Dep) loop
941 exit when File.Dep.Table (K) = File_Ref;
945 -- Then parse the type and column number
948 Parse_Number (Ali, Ptr, P_Column);
950 -- Skip the information for generics instantiations
952 if Ali (Ptr) = '[' then
953 Skip_To_Matching_Closing_Bracket;
956 -- Skip '>', or ')' or '>'
960 -- The derived info is needed only is the derived info mode is
961 -- on or if we want to output the type hierarchy
963 if Der_Info or else Type_Tree then
965 Symbol : constant String :=
966 Get_Symbol_Name (P_Eun, P_Line, P_Column);
968 if Symbol /= "???" then
974 File.Dep.Table (P_Eun));
980 and then (Pattern.File_Ref = Empty_File
982 Pattern.File_Ref = Current_Xref_File (File))
984 Search_Parent_Tree : declare
985 Pattern : Search_Pattern; -- Parent type pattern
986 File_Pos_Backup : Positive;
991 Get_Symbol_Name (P_Eun, P_Line, P_Column)
992 & ':' & Get_Gnatchop_File (File.Dep.Table (P_Eun))
993 & ':' & Get_Line (Get_Parent (Decl_Ref))
994 & ':' & Get_Column (Get_Parent (Decl_Ref)),
997 -- No default match is needed to look for the parent type
998 -- since we are using the fully qualified symbol name:
999 -- symbol:file:line:column
1001 Set_Default_Match (False);
1003 -- The parent hierarchy is defined in the same unit as
1004 -- the derived type. So we want to revisit the unit.
1006 File_Pos_Backup := File.Current_Line;
1008 Skip_To_First_X_Line
1009 (File, D_Lines => False, W_Lines => False);
1011 while File.Buffer (File.Current_Line) /= EOF loop
1012 Parse_X_Filename (File);
1013 Parse_Identifier_Info
1014 (Pattern => Pattern,
1016 Local_Symbols => False,
1017 Der_Info => Der_Info,
1019 Wide_Search => False,
1020 Labels_As_Ref => Labels_As_Ref);
1023 File.Current_Line := File_Pos_Backup;
1024 end Search_Parent_Tree;
1026 end Parse_Derived_Info;
1029 while Ali (Ptr) /= '>'
1030 and then Ali (Ptr) /= ')'
1031 and then Ali (Ptr) /= '}'
1038 elsif Ali (Ptr) = '=' then
1040 P_Line, P_Column : Natural;
1044 Parse_Number (Ali, Ptr, P_Line);
1046 Parse_Number (Ali, Ptr, P_Column);
1050 -- To find the body, we will have to parse the file too
1054 File_Ref : File_Reference;
1055 pragma Unreferenced (File_Ref);
1056 File_Name : constant String := Get_Gnatchop_File (File.X_File);
1058 File_Ref := Add_To_Xref_File (ALI_File_Name (File_Name), False);
1062 -- Parse references to this entity.
1063 -- Ptr points to next reference with leading blanks
1066 -- Process references on current line
1068 while Ali (Ptr) = ' ' or Ali (Ptr) = ASCII.HT loop
1070 -- For every reference read the line, type and column,
1071 -- optionally preceded by a file number and a pipe symbol.
1073 Parse_Number (Ali, Ptr, R_Line);
1075 if Ali (Ptr) = Pipe then
1077 File_Ref := File_Name (File, R_Line);
1079 Parse_Number (Ali, Ptr, R_Line);
1082 if Ali (Ptr) > ' ' then
1083 R_Type := Ali (Ptr);
1087 -- Imported entities might special indication as to their external
1089 -- 5U14*Foo2 5>20 6b<c,myfoo2>22
1092 and then Ali (Ptr) = '<'
1094 while Ptr <= Ali'Last
1095 and then Ali (Ptr) /= '>'
1102 Parse_Number (Ali, Ptr, R_Col);
1104 -- Insert the reference or body in the table
1107 (Decl_Ref, File_Ref, R_Line, R_Col, R_Type, Labels_As_Ref);
1109 -- Skip generic information, if any
1111 if Ali (Ptr) = '[' then
1113 Num_Nested : Integer := 1;
1117 while Num_Nested /= 0 loop
1118 if Ali (Ptr) = ']' then
1119 Num_Nested := Num_Nested - 1;
1120 elsif Ali (Ptr) = '[' then
1121 Num_Nested := Num_Nested + 1;
1131 Parse_EOL (Ali, Ptr);
1133 -- Loop until new line is no continuation line
1135 exit when Ali (Ptr) /= '.';
1138 end Parse_Identifier_Info;
1144 procedure Parse_Number
1145 (Source : not null access String;
1146 Ptr : in out Positive;
1147 Number : out Natural)
1152 while Source (Ptr) = ' ' or else Source (Ptr) = ASCII.HT loop
1157 while Source (Ptr) in '0' .. '9' loop
1159 10 * Number + (Character'Pos (Source (Ptr)) - Character'Pos ('0'));
1168 procedure Parse_Token
1169 (Source : not null access String;
1170 Ptr : in out Positive;
1171 Token_Ptr : out Positive)
1173 In_Quotes : Character := ASCII.NUL;
1178 while Source (Ptr) = ' ' or else Source (Ptr) = ASCII.HT loop
1184 -- Find end-of-token
1186 while (In_Quotes /= ASCII.NUL or else
1187 not (Source (Ptr) = ' '
1188 or else Source (Ptr) = ASCII.HT
1189 or else Source (Ptr) = '<'
1190 or else Source (Ptr) = '{'
1191 or else Source (Ptr) = '['
1192 or else Source (Ptr) = '='
1193 or else Source (Ptr) = '('))
1194 and then Source (Ptr) >= ' '
1196 -- Double-quotes are used for operators
1197 -- Simple-quotes are used for character constants, for instance when
1198 -- they are found in an enumeration type "type A is ('+', '-');"
1200 case Source (Ptr) is
1202 if In_Quotes = Source (Ptr) then
1203 In_Quotes := ASCII.NUL;
1204 elsif In_Quotes = ASCII.NUL then
1205 In_Quotes := Source (Ptr);
1216 ----------------------
1217 -- Parse_X_Filename --
1218 ----------------------
1220 procedure Parse_X_Filename (File : in out ALI_File) is
1221 Ali : String_Access renames File.Buffer;
1222 Ptr : Positive renames File.Current_Line;
1226 while Ali (Ptr) = 'X' loop
1228 -- The current line is the start of a new Xref file section,
1229 -- whose format looks like:
1233 -- Skip the X and read the file number for the new X_File
1236 Parse_Number (Ali, Ptr, File_Nr);
1239 File.X_File := File.Dep.Table (File_Nr);
1242 Parse_EOL (Ali, Ptr);
1244 end Parse_X_Filename;
1246 --------------------
1247 -- Print_Gnatfind --
1248 --------------------
1250 procedure Print_Gnatfind
1251 (References : Boolean;
1252 Full_Path_Name : Boolean)
1254 Decls : constant Declaration_Array_Access := Get_Declarations;
1255 Decl : Declaration_Reference;
1256 Arr : Reference_Array_Access;
1260 Msg : String := " ");
1261 -- Print a reference, according to the extended tag of the output
1269 Msg : String := " ")
1271 F : String_Access :=
1272 Osint.To_Host_File_Spec
1273 (Get_Gnatchop_File (Ref, Full_Path_Name));
1275 Buffer : constant String :=
1277 ":" & Get_Line (Ref) &
1278 ":" & Get_Column (Ref) &
1281 Num_Blanks : Integer := Longest_File_Name + 10 - Buffer'Length;
1285 Num_Blanks := Integer'Max (0, Num_Blanks);
1288 & String'(1 .. Num_Blanks => ' ')
1289 & Msg & " " & Get_Symbol (Decl));
1291 if Get_Source_Line (Ref)'Length /= 0 then
1292 Write_Line (" " & Get_Source_Line (Ref));
1296 -- Start of processing for Print_Gnatfind
1299 for D in Decls'Range loop
1302 if Match (Decl) then
1304 -- Output the declaration
1307 Parent : constant Declaration_Reference := Get_Parent (Decl);
1309 F : String_Access :=
1310 Osint.To_Host_File_Spec
1311 (Get_Gnatchop_File (Decl, Full_Path_Name));
1313 Buffer : constant String :=
1315 ":" & Get_Line (Decl) &
1316 ":" & Get_Column (Decl) &
1319 Num_Blanks : Integer := Longest_File_Name + 10 - Buffer'Length;
1323 Num_Blanks := Integer'Max (0, Num_Blanks);
1325 (Buffer & String'(1 .. Num_Blanks => ' ')
1326 & "(spec) " & Get_Symbol (Decl));
1328 if Parent /= Empty_Declaration then
1329 F := Osint.To_Host_File_Spec (Get_Gnatchop_File (Parent));
1331 (Buffer & String'(1 .. Num_Blanks => ' ')
1332 & " derived from " & Get_Symbol (Parent)
1335 & ':' & Get_Line (Parent)
1336 & ':' & Get_Column (Parent) & ')');
1341 if Get_Source_Line (Decl)'Length /= 0 then
1342 Write_Line (" " & Get_Source_Line (Decl));
1345 -- Output the body (sorted)
1347 Arr := Get_References (Decl, Get_Bodies => True);
1349 for R in Arr'Range loop
1350 Print_Ref (Arr (R), "(body)");
1356 Arr := Get_References
1357 (Decl, Get_Writes => True, Get_Reads => True);
1359 for R in Arr'Range loop
1360 Print_Ref (Arr (R));
1373 procedure Print_Unused (Full_Path_Name : Boolean) is
1374 Decls : constant Declaration_Array_Access := Get_Declarations;
1375 Decl : Declaration_Reference;
1376 Arr : Reference_Array_Access;
1380 for D in Decls'Range loop
1384 (Decl, Get_Reads => True, Get_Writes => True) = 0
1386 F := Osint.To_Host_File_Spec
1387 (Get_Gnatchop_File (Decl, Full_Path_Name));
1388 Write_Str (Get_Symbol (Decl)
1390 & Get_Full_Type (Decl)
1396 & Get_Column (Decl));
1399 -- Print the body if any
1401 Arr := Get_References (Decl, Get_Bodies => True);
1403 for R in Arr'Range loop
1404 F := Osint.To_Host_File_Spec
1405 (Get_Gnatchop_File (Arr (R), Full_Path_Name));
1408 & ':' & Get_Line (Arr (R))
1409 & ':' & Get_Column (Arr (R)));
1423 procedure Print_Vi (Full_Path_Name : Boolean) is
1424 Tab : constant Character := ASCII.HT;
1425 Decls : constant Declaration_Array_Access :=
1426 Get_Declarations (Sorted => False);
1427 Decl : Declaration_Reference;
1428 Arr : Reference_Array_Access;
1432 for D in Decls'Range loop
1435 F := Osint.To_Host_File_Spec (Get_File (Decl, Full_Path_Name));
1436 Write_Line (Get_Symbol (Decl) & Tab & F.all & Tab & Get_Line (Decl));
1439 -- Print the body if any
1441 Arr := Get_References (Decl, Get_Bodies => True);
1443 for R in Arr'Range loop
1444 F := Osint.To_Host_File_Spec (Get_File (Arr (R), Full_Path_Name));
1446 (Get_Symbol (Decl) & Tab & F.all & Tab & Get_Line (Arr (R)));
1452 -- Print the modifications
1454 Arr := Get_References (Decl, Get_Writes => True, Get_Reads => True);
1456 for R in Arr'Range loop
1457 F := Osint.To_Host_File_Spec (Get_File (Arr (R), Full_Path_Name));
1459 (Get_Symbol (Decl) & Tab & F.all & Tab & Get_Line (Arr (R)));
1471 procedure Print_Xref (Full_Path_Name : Boolean) is
1472 Decls : constant Declaration_Array_Access := Get_Declarations;
1473 Decl : Declaration_Reference;
1475 Margin : constant := 10;
1476 -- Column where file names start
1478 procedure New_Line80;
1479 -- Go to start of new line
1481 procedure Print80 (S : String);
1482 -- Print the text, respecting the 80 columns rule
1484 procedure Print_Ref (Line, Column : String);
1485 -- The beginning of the output is aligned on a column multiple of 9
1487 procedure Print_List
1488 (Decl : Declaration_Reference;
1490 Get_Reads : Boolean := False;
1491 Get_Writes : Boolean := False;
1492 Get_Bodies : Boolean := False);
1493 -- Print a list of references. If the list is not empty, Msg will
1494 -- be printed prior to the list.
1500 procedure New_Line80 is
1503 Write_Str (String'(1 .. Margin - 1 => ' '));
1510 procedure Print80 (S : String) is
1511 Align : Natural := Margin - (Integer (Column) mod Margin);
1514 if Align = Margin then
1518 Write_Str (String'(1 .. Align => ' ') & S);
1525 procedure Print_Ref (Line, Column : String) is
1526 Line_Align : constant Integer := 4 - Line'Length;
1528 S : constant String := String'(1 .. Line_Align => ' ')
1529 & Line & ':' & Column;
1531 Align : Natural := Margin - (Integer (Output.Column) mod Margin);
1534 if Align = Margin then
1538 if Integer (Output.Column) + Align + S'Length > 79 then
1543 Write_Str (String'(1 .. Align => ' ') & S);
1550 procedure Print_List
1551 (Decl : Declaration_Reference;
1553 Get_Reads : Boolean := False;
1554 Get_Writes : Boolean := False;
1555 Get_Bodies : Boolean := False)
1557 Arr : Reference_Array_Access :=
1560 Get_Writes => Get_Writes,
1561 Get_Reads => Get_Reads,
1562 Get_Bodies => Get_Bodies);
1563 File : File_Reference := Empty_File;
1567 if Arr'Length /= 0 then
1572 for R in Arr'Range loop
1573 if Get_File_Ref (Arr (R)) /= File then
1574 if File /= Empty_File then
1578 File := Get_File_Ref (Arr (R));
1579 F := Osint.To_Host_File_Spec
1580 (Get_Gnatchop_File (Arr (R), Full_Path_Name));
1581 Write_Str (F.all & ' ');
1585 Print_Ref (Get_Line (Arr (R)), Get_Column (Arr (R)));
1593 -- Start of processing for Print_Xref
1596 for D in Decls'Range loop
1599 Write_Str (Get_Symbol (Decl));
1601 while Column < Type_Position loop
1605 Write_Line (Get_Full_Type (Decl));
1607 Write_Parent_Info : declare
1608 Parent : constant Declaration_Reference := Get_Parent (Decl);
1611 if Parent /= Empty_Declaration then
1612 Write_Str (" Ptype: ");
1613 F := Osint.To_Host_File_Spec (Get_Gnatchop_File (Parent));
1616 Print_Ref (Get_Line (Parent), Get_Column (Parent));
1617 Print80 (" " & Get_Symbol (Parent));
1620 end Write_Parent_Info;
1622 Write_Str (" Decl: ");
1623 F := Osint.To_Host_File_Spec
1624 (Get_Gnatchop_File (Decl, Full_Path_Name));
1625 Print80 (F.all & ' ');
1627 Print_Ref (Get_Line (Decl), Get_Column (Decl));
1630 (Decl, " Body: ", Get_Bodies => True);
1632 (Decl, " Modi: ", Get_Writes => True);
1634 (Decl, " Ref: ", Get_Reads => True);
1644 (Pattern : Search_Pattern;
1645 Local_Symbols : Boolean;
1646 Wide_Search : Boolean;
1647 Read_Only : Boolean;
1649 Type_Tree : Boolean)
1651 type String_Access is access String;
1652 procedure Free is new Unchecked_Deallocation (String, String_Access);
1655 File_Ref : File_Reference;
1656 Strip_Num : Natural := 0;
1657 Ali_Name : String_Access;
1660 -- If we want all the .ali files, then find them
1667 -- Get the next unread ali file
1669 File_Ref := Next_Unvisited_File;
1671 exit when File_Ref = Empty_File;
1673 -- Find the ALI file to use. Most of the time, it will be the unit
1674 -- name, with a different extension. However, when dealing with
1675 -- separates the ALI file is in fact the parent's ALI file (and this
1676 -- is recursive, in case the parent itself is a separate).
1681 Ali_Name := new String'
1682 (Get_File (File_Ref, With_Dir => True, Strip => Strip_Num));
1684 -- Stripped too many things...
1686 if Ali_Name.all = "" then
1687 if Get_Emit_Warning (File_Ref) then
1690 ("warning : file " & Get_File (File_Ref, With_Dir => True)
1692 Set_Standard_Output;
1697 -- If not found, try the parent's ALI file (this is needed for
1698 -- separate units and subprograms).
1700 -- Reset the cached directory first, in case the separate's
1701 -- ALI file is not in the same directory.
1703 elsif not File_Exists (Ali_Name.all) then
1704 Strip_Num := Strip_Num + 1;
1705 Reset_Directory (File_Ref);
1707 -- Else we finally found it
1714 -- If we had to get the parent's ALI, insert it in the list as usual.
1715 -- This is to avoid parsing it twice in case it has already been
1718 if Ali_Name /= null and then Strip_Num /= 0 then
1719 File_Ref := Add_To_Xref_File
1720 (File_Name => Ali_Name.all,
1723 -- Now that we have a file name, parse it to find any reference to
1726 elsif Ali_Name /= null
1727 and then (Read_Only or else Is_Writable_File (Ali_Name.all))
1730 Open (Ali_Name.all, ALIfile);
1731 while ALIfile.Buffer (ALIfile.Current_Line) /= EOF loop
1732 Parse_X_Filename (ALIfile);
1733 Parse_Identifier_Info
1734 (Pattern, ALIfile, Local_Symbols,
1735 Der_Info, Type_Tree, Wide_Search, Labels_As_Ref => True);
1739 when No_Xref_Information =>
1740 if Get_Emit_Warning (File_Ref) then
1743 ("warning : No cross-referencing information in "
1745 Set_Standard_Output;
1758 procedure Search_Xref
1759 (Local_Symbols : Boolean;
1760 Read_Only : Boolean;
1764 File_Ref : File_Reference;
1765 Null_Pattern : Search_Pattern;
1768 Null_Pattern.Initialized := False;
1771 -- Find the next unvisited file
1773 File_Ref := Next_Unvisited_File;
1774 exit when File_Ref = Empty_File;
1776 -- Search the object directories for the .ali file
1779 F : constant String := Get_File (File_Ref, With_Dir => True);
1782 if Read_Only or else Is_Writable_File (F) then
1783 Open (F, ALIfile, True);
1785 while ALIfile.Buffer (ALIfile.Current_Line) /= EOF loop
1786 Parse_X_Filename (ALIfile);
1787 Parse_Identifier_Info
1788 (Null_Pattern, ALIfile, Local_Symbols, Der_Info,
1789 Labels_As_Ref => False);
1794 when No_Xref_Information => null;