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------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- X R E F _ L I B -- -- -- -- B o d y -- -- -- -- Copyright (C) 1998-2011, Free Software Foundation, Inc. -- -- -- -- GNAT is free software; you can redistribute it and/or modify it under -- -- terms of the GNU General Public License as published by the Free Soft- -- -- ware Foundation; either version 3, or (at your option) any later ver- -- -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- -- for more details. You should have received a copy of the GNU General -- -- Public License distributed with GNAT; see file COPYING3. If not, go to -- -- http://www.gnu.org/licenses for a complete copy of the license. -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ with Osint; with Output; use Output; with Types; use Types; with Unchecked_Deallocation; with Ada.Strings.Fixed; use Ada.Strings.Fixed; with Ada.Text_IO; use Ada.Text_IO; with GNAT.Command_Line; use GNAT.Command_Line; with GNAT.IO_Aux; use GNAT.IO_Aux; package body Xref_Lib is Type_Position : constant := 50; -- Column for label identifying type of entity --------------------- -- Local Variables -- --------------------- Pipe : constant Character := '|'; -- First character on xref lines in the .ali file No_Xref_Information : exception; -- Exception raised when there is no cross-referencing information in -- the .ali files. procedure Parse_EOL (Source : not null access String; Ptr : in out Positive; Skip_Continuation_Line : Boolean := False); -- On return Source (Ptr) is the first character of the next line -- or EOF. Source.all must be terminated by EOF. -- -- If Skip_Continuation_Line is True, this subprogram skips as many -- lines as required when the second or more lines starts with '.' -- (continuation lines in ALI files). function Current_Xref_File (File : ALI_File) return File_Reference; -- Return the file matching the last 'X' line we found while parsing -- the ALI file. function File_Name (File : ALI_File; Num : Positive) return File_Reference; -- Returns the dependency file name number Num function Get_Full_Type (Decl : Declaration_Reference) return String; -- Returns the full type corresponding to a type letter as found in -- the .ali files. procedure Open (Name : String; File : out ALI_File; Dependencies : Boolean := False); -- Open a new ALI file. If Dependencies is True, the insert every library -- file 'with'ed in the files database (used for gnatxref) procedure Parse_Identifier_Info (Pattern : Search_Pattern; File : in out ALI_File; Local_Symbols : Boolean; Der_Info : Boolean := False; Type_Tree : Boolean := False; Wide_Search : Boolean := True; Labels_As_Ref : Boolean := True); -- Output the file and the line where the identifier was referenced, -- If Local_Symbols is False then only the publicly visible symbols -- will be processed. -- -- If Labels_As_Ref is true, then the references to the entities after -- the end statements ("end Foo") will be counted as actual references. -- The entity will never be reported as unreferenced by gnatxref -u procedure Parse_Token (Source : not null access String; Ptr : in out Positive; Token_Ptr : out Positive); -- Skips any separators and stores the start of the token in Token_Ptr. -- Then stores the position of the next separator in Ptr. On return -- Source (Token_Ptr .. Ptr - 1) is the token. Separators are space -- and ASCII.HT. Parse_Token will never skip to the next line. procedure Parse_Number (Source : not null access String; Ptr : in out Positive; Number : out Natural); -- Skips any separators and parses Source up to the first character that -- is not a decimal digit. Returns value of parsed digits or 0 if none. procedure Parse_X_Filename (File : in out ALI_File); -- Reads and processes "X..." lines in the ALI file -- and updates the File.X_File information. procedure Skip_To_First_X_Line (File : in out ALI_File; D_Lines : Boolean; W_Lines : Boolean); -- Skip the lines in the ALI file until the first cross-reference line -- (^X...) is found. Search is started from the beginning of the file. -- If not such line is found, No_Xref_Information is raised. -- If W_Lines is false, then the lines "^W" are not parsed. -- If D_Lines is false, then the lines "^D" are not parsed. ---------------- -- Add_Entity -- ---------------- procedure Add_Entity (Pattern : in out Search_Pattern; Entity : String; Glob : Boolean := False) is File_Start : Natural; Line_Start : Natural; Col_Start : Natural; Line_Num : Natural := 0; Col_Num : Natural := 0; File_Ref : File_Reference := Empty_File; pragma Warnings (Off, File_Ref); begin -- Find the end of the first item in Entity (pattern or file?) -- If there is no ':', we only have a pattern File_Start := Index (Entity, ":"); -- If the regular expression is invalid, just consider it as a string if File_Start = 0 then begin Pattern.Entity := Compile (Entity, Glob, False); Pattern.Initialized := True; exception when Error_In_Regexp => -- The basic idea is to insert a \ before every character declare Tmp_Regexp : String (1 .. 2 * Entity'Length); Index : Positive := 1; begin for J in Entity'Range loop Tmp_Regexp (Index) := '\'; Tmp_Regexp (Index + 1) := Entity (J); Index := Index + 2; end loop; Pattern.Entity := Compile (Tmp_Regexp, True, False); Pattern.Initialized := True; end; end; Set_Default_Match (True); return; end if; -- If there is a dot in the pattern, then it is a file name if (Glob and then Index (Entity (Entity'First .. File_Start - 1), ".") /= 0) or else (not Glob and then Index (Entity (Entity'First .. File_Start - 1), "\.") /= 0) then Pattern.Entity := Compile (".*", False); Pattern.Initialized := True; File_Start := Entity'First; else -- If the regular expression is invalid, just consider it as a string begin Pattern.Entity := Compile (Entity (Entity'First .. File_Start - 1), Glob, False); Pattern.Initialized := True; exception when Error_In_Regexp => -- The basic idea is to insert a \ before every character declare Tmp_Regexp : String (1 .. 2 * (File_Start - Entity'First)); Index : Positive := 1; begin for J in Entity'First .. File_Start - 1 loop Tmp_Regexp (Index) := '\'; Tmp_Regexp (Index + 1) := Entity (J); Index := Index + 2; end loop; Pattern.Entity := Compile (Tmp_Regexp, True, False); Pattern.Initialized := True; end; end; File_Start := File_Start + 1; end if; -- Parse the file name Line_Start := Index (Entity (File_Start .. Entity'Last), ":"); -- Check if it was a disk:\directory item (for Windows) if File_Start = Line_Start - 1 and then Line_Start < Entity'Last and then Entity (Line_Start + 1) = '\' then Line_Start := Index (Entity (Line_Start + 1 .. Entity'Last), ":"); end if; if Line_Start = 0 then Line_Start := Entity'Length + 1; elsif Line_Start /= Entity'Last then Col_Start := Index (Entity (Line_Start + 1 .. Entity'Last), ":"); if Col_Start = 0 then Col_Start := Entity'Last + 1; end if; if Col_Start > Line_Start + 1 then begin Line_Num := Natural'Value (Entity (Line_Start + 1 .. Col_Start - 1)); exception when Constraint_Error => raise Invalid_Argument; end; end if; if Col_Start < Entity'Last then begin Col_Num := Natural'Value (Entity (Col_Start + 1 .. Entity'Last)); exception when Constraint_Error => raise Invalid_Argument; end; end if; end if; File_Ref := Add_To_Xref_File (Entity (File_Start .. Line_Start - 1), Visited => True); Pattern.File_Ref := File_Ref; Add_Line (Pattern.File_Ref, Line_Num, Col_Num); File_Ref := Add_To_Xref_File (ALI_File_Name (Entity (File_Start .. Line_Start - 1)), Visited => False, Emit_Warning => True); end Add_Entity; ------------------- -- Add_Xref_File -- ------------------- procedure Add_Xref_File (File : String) is File_Ref : File_Reference := Empty_File; pragma Unreferenced (File_Ref); Iterator : Expansion_Iterator; procedure Add_Xref_File_Internal (File : String); -- Do the actual addition of the file ---------------------------- -- Add_Xref_File_Internal -- ---------------------------- procedure Add_Xref_File_Internal (File : String) is begin -- Case where we have an ALI file, accept it even though this is -- not official usage, since the intention is obvious if Tail (File, 4) = "." & Osint.ALI_Suffix.all then File_Ref := Add_To_Xref_File (File, Visited => False, Emit_Warning => True); -- Normal non-ali file case else File_Ref := Add_To_Xref_File (File, Visited => True); File_Ref := Add_To_Xref_File (ALI_File_Name (File), Visited => False, Emit_Warning => True); end if; end Add_Xref_File_Internal; -- Start of processing for Add_Xref_File begin -- Check if we need to do the expansion if Ada.Strings.Fixed.Index (File, "*") /= 0 or else Ada.Strings.Fixed.Index (File, "?") /= 0 then Start_Expansion (Iterator, File); loop declare S : constant String := Expansion (Iterator); begin exit when S'Length = 0; Add_Xref_File_Internal (S); end; end loop; else Add_Xref_File_Internal (File); end if; end Add_Xref_File; ----------------------- -- Current_Xref_File -- ----------------------- function Current_Xref_File (File : ALI_File) return File_Reference is begin return File.X_File; end Current_Xref_File; -------------------------- -- Default_Project_File -- -------------------------- function Default_Project_File (Dir_Name : String) return String is My_Dir : Dir_Type; Dir_Ent : File_Name_String; Last : Natural; begin Open (My_Dir, Dir_Name); loop Read (My_Dir, Dir_Ent, Last); exit when Last = 0; if Tail (Dir_Ent (1 .. Last), 4) = ".adp" then -- The first project file found is the good one Close (My_Dir); return Dir_Ent (1 .. Last); end if; end loop; Close (My_Dir); return String'(1 .. 0 => ' '); exception when Directory_Error => return String'(1 .. 0 => ' '); end Default_Project_File; --------------- -- File_Name -- --------------- function File_Name (File : ALI_File; Num : Positive) return File_Reference is begin return File.Dep.Table (Num); end File_Name; -------------------- -- Find_ALI_Files -- -------------------- procedure Find_ALI_Files is My_Dir : Rec_DIR; Dir_Ent : File_Name_String; Last : Natural; File_Ref : File_Reference; pragma Unreferenced (File_Ref); function Open_Next_Dir return Boolean; -- Tries to open the next object directory, and return False if -- the directory cannot be opened. ------------------- -- Open_Next_Dir -- ------------------- function Open_Next_Dir return Boolean is begin -- Until we are able to open a new directory loop declare Obj_Dir : constant String := Next_Obj_Dir; begin -- Case of no more Obj_Dir lines if Obj_Dir'Length = 0 then return False; end if; Open (My_Dir.Dir, Obj_Dir); exit; exception -- Could not open the directory when Directory_Error => null; end; end loop; return True; end Open_Next_Dir; -- Start of processing for Find_ALI_Files begin Reset_Obj_Dir; if Open_Next_Dir then loop Read (My_Dir.Dir, Dir_Ent, Last); if Last = 0 then Close (My_Dir.Dir); if not Open_Next_Dir then return; end if; elsif Last > 4 and then Dir_Ent (Last - 3 .. Last) = "." & Osint.ALI_Suffix.all then File_Ref := Add_To_Xref_File (Dir_Ent (1 .. Last), Visited => False); end if; end loop; end if; end Find_ALI_Files; ------------------- -- Get_Full_Type -- ------------------- function Get_Full_Type (Decl : Declaration_Reference) return String is function Param_String return String; -- Return the string to display depending on whether Decl is a parameter ------------------ -- Param_String -- ------------------ function Param_String return String is begin if Is_Parameter (Decl) then return "parameter "; else return ""; end if; end Param_String; -- Start of processing for Get_Full_Type begin case Get_Type (Decl) is when 'A' => return "array type"; when 'B' => return "boolean type"; when 'C' => return "class-wide type"; when 'D' => return "decimal type"; when 'E' => return "enumeration type"; when 'F' => return "float type"; when 'H' => return "abstract type"; when 'I' => return "integer type"; when 'M' => return "modular type"; when 'O' => return "fixed type"; when 'P' => return "access type"; when 'R' => return "record type"; when 'S' => return "string type"; when 'T' => return "task type"; when 'W' => return "protected type"; when 'a' => return Param_String & "array object"; when 'b' => return Param_String & "boolean object"; when 'c' => return Param_String & "class-wide object"; when 'd' => return Param_String & "decimal object"; when 'e' => return Param_String & "enumeration object"; when 'f' => return Param_String & "float object"; when 'i' => return Param_String & "integer object"; when 'j' => return Param_String & "class object"; when 'm' => return Param_String & "modular object"; when 'o' => return Param_String & "fixed object"; when 'p' => return Param_String & "access object"; when 'r' => return Param_String & "record object"; when 's' => return Param_String & "string object"; when 't' => return Param_String & "task object"; when 'w' => return Param_String & "protected object"; when 'x' => return Param_String & "abstract procedure"; when 'y' => return Param_String & "abstract function"; when 'h' => return "interface"; when 'g' => return "macro"; when 'J' => return "class"; when 'K' => return "package"; when 'k' => return "generic package"; when 'L' => return "statement label"; when 'l' => return "loop label"; when 'N' => return "named number"; when 'n' => return "enumeration literal"; when 'q' => return "block label"; when 'Q' => return "include file"; when 'U' => return "procedure"; when 'u' => return "generic procedure"; when 'V' => return "function"; when 'v' => return "generic function"; when 'X' => return "exception"; when 'Y' => return "entry"; when '+' => return "private type"; when '*' => return "private variable"; -- The above should be the only possibilities, but for this kind -- of informational output, we don't want to bomb if we find -- something else, so just return three question marks when we -- have an unknown Abbrev value when others => if Is_Parameter (Decl) then return "parameter"; else return "??? (" & Get_Type (Decl) & ")"; end if; end case; end Get_Full_Type; -------------------------- -- Skip_To_First_X_Line -- -------------------------- procedure Skip_To_First_X_Line (File : in out ALI_File; D_Lines : Boolean; W_Lines : Boolean) is Ali : String_Access renames File.Buffer; Token : Positive; Ptr : Positive := Ali'First; Num_Dependencies : Natural := 0; File_Start : Positive; File_End : Positive; Gnatchop_Offset : Integer; Gnatchop_Name : Positive; File_Ref : File_Reference; pragma Unreferenced (File_Ref); begin -- Read all the lines possibly processing with-clauses and dependency -- information and exit on finding the first Xref line. -- A fall-through of the loop means that there is no xref information -- which is an error condition. while Ali (Ptr) /= EOF loop if D_Lines and then Ali (Ptr) = 'D' then -- Found dependency information. Format looks like: -- D src-nam time-stmp checksum [subunit-name] [line:file-name] -- Skip the D and parse the filenam Ptr := Ptr + 1; Parse_Token (Ali, Ptr, Token); File_Start := Token; File_End := Ptr - 1; Num_Dependencies := Num_Dependencies + 1; Set_Last (File.Dep, Num_Dependencies); Parse_Token (Ali, Ptr, Token); -- Skip time-stamp Parse_Token (Ali, Ptr, Token); -- Skip checksum Parse_Token (Ali, Ptr, Token); -- Read next entity on the line if not (Ali (Token) in '0' .. '9') then Parse_Token (Ali, Ptr, Token); -- Was a subunit name end if; -- Did we have a gnatchop-ed file with a pragma Source_Reference ? Gnatchop_Offset := 0; if Ali (Token) in '0' .. '9' then Gnatchop_Name := Token; while Ali (Gnatchop_Name) /= ':' loop Gnatchop_Name := Gnatchop_Name + 1; end loop; Gnatchop_Offset := 2 - Natural'Value (Ali (Token .. Gnatchop_Name - 1)); Token := Gnatchop_Name + 1; end if; File.Dep.Table (Num_Dependencies) := Add_To_Xref_File (Ali (File_Start .. File_End), Gnatchop_File => Ali (Token .. Ptr - 1), Gnatchop_Offset => Gnatchop_Offset); elsif W_Lines and then Ali (Ptr) = 'W' then -- Found with-clause information. Format looks like: -- "W debug%s debug.adb debug.ali" -- Skip the W and parse the .ali filename (3rd token) Parse_Token (Ali, Ptr, Token); Parse_Token (Ali, Ptr, Token); Parse_Token (Ali, Ptr, Token); File_Ref := Add_To_Xref_File (Ali (Token .. Ptr - 1), Visited => False); elsif Ali (Ptr) = 'X' then -- Found a cross-referencing line - stop processing File.Current_Line := Ptr; File.Xref_Line := Ptr; return; end if; Parse_EOL (Ali, Ptr); end loop; raise No_Xref_Information; end Skip_To_First_X_Line; ---------- -- Open -- ---------- procedure Open (Name : String; File : out ALI_File; Dependencies : Boolean := False) is Ali : String_Access renames File.Buffer; pragma Warnings (Off, Ali); begin if File.Buffer /= null then Free (File.Buffer); end if; Init (File.Dep); begin Read_File (Name, Ali); exception when Ada.Text_IO.Name_Error | Ada.Text_IO.End_Error => raise No_Xref_Information; end; Skip_To_First_X_Line (File, D_Lines => True, W_Lines => Dependencies); end Open; --------------- -- Parse_EOL -- --------------- procedure Parse_EOL (Source : not null access String; Ptr : in out Positive; Skip_Continuation_Line : Boolean := False) is begin loop -- Skip to end of line while Source (Ptr) /= ASCII.CR and then Source (Ptr) /= ASCII.LF and then Source (Ptr) /= EOF loop Ptr := Ptr + 1; end loop; -- Skip CR or LF if not at end of file if Source (Ptr) /= EOF then Ptr := Ptr + 1; end if; -- Skip past CR/LF or LF/CR combination if (Source (Ptr) = ASCII.CR or else Source (Ptr) = ASCII.LF) and then Source (Ptr) /= Source (Ptr - 1) then Ptr := Ptr + 1; end if; exit when not Skip_Continuation_Line or else Source (Ptr) /= '.'; end loop; end Parse_EOL; --------------------------- -- Parse_Identifier_Info -- --------------------------- procedure Parse_Identifier_Info (Pattern : Search_Pattern; File : in out ALI_File; Local_Symbols : Boolean; Der_Info : Boolean := False; Type_Tree : Boolean := False; Wide_Search : Boolean := True; Labels_As_Ref : Boolean := True) is Ptr : Positive renames File.Current_Line; Ali : String_Access renames File.Buffer; E_Line : Natural; -- Line number of current entity E_Col : Natural; -- Column number of current entity E_Type : Character; -- Type of current entity E_Name : Positive; -- Pointer to begin of entity name E_Global : Boolean; -- True iff entity is global R_Line : Natural; -- Line number of current reference R_Col : Natural; -- Column number of current reference R_Type : Character; -- Type of current reference Decl_Ref : Declaration_Reference; File_Ref : File_Reference := Current_Xref_File (File); function Get_Symbol_Name (Eun, Line, Col : Natural) return String; -- Returns the symbol name for the entity defined at the specified -- line and column in the dependent unit number Eun. For this we need -- to parse the ali file again because the parent entity is not in -- the declaration table if it did not match the search pattern. procedure Skip_To_Matching_Closing_Bracket; -- When Ptr points to an opening square bracket, moves it to the -- character following the matching closing bracket --------------------- -- Get_Symbol_Name -- --------------------- function Get_Symbol_Name (Eun, Line, Col : Natural) return String is Ptr : Positive := 1; E_Eun : Positive; -- Unit number of current entity E_Line : Natural; -- Line number of current entity E_Col : Natural; -- Column number of current entity E_Name : Positive; -- Pointer to begin of entity name begin -- Look for the X lines corresponding to unit Eun loop if Ali (Ptr) = 'X' then Ptr := Ptr + 1; Parse_Number (Ali, Ptr, E_Eun); exit when E_Eun = Eun; end if; Parse_EOL (Ali, Ptr, Skip_Continuation_Line => True); end loop; -- Here we are in the right Ali section, we now look for the entity -- declared at position (Line, Col). loop Parse_Number (Ali, Ptr, E_Line); exit when Ali (Ptr) = EOF; Ptr := Ptr + 1; Parse_Number (Ali, Ptr, E_Col); exit when Ali (Ptr) = EOF; Ptr := Ptr + 1; if Line = E_Line and then Col = E_Col then Parse_Token (Ali, Ptr, E_Name); return Ali (E_Name .. Ptr - 1); end if; Parse_EOL (Ali, Ptr, Skip_Continuation_Line => True); exit when Ali (Ptr) = EOF; end loop; -- We were not able to find the symbol, this should not happen but -- since we don't want to stop here we return a string of three -- question marks as the symbol name. return "???"; end Get_Symbol_Name; -------------------------------------- -- Skip_To_Matching_Closing_Bracket -- -------------------------------------- procedure Skip_To_Matching_Closing_Bracket is Num_Brackets : Natural; begin Num_Brackets := 1; while Num_Brackets /= 0 loop Ptr := Ptr + 1; if Ali (Ptr) = '[' then Num_Brackets := Num_Brackets + 1; elsif Ali (Ptr) = ']' then Num_Brackets := Num_Brackets - 1; end if; end loop; Ptr := Ptr + 1; end Skip_To_Matching_Closing_Bracket; -- Start of processing for Parse_Identifier_Info begin -- The identifier info looks like: -- "38U9*Debug 12|36r6 36r19" -- Extract the line, column and entity name information Parse_Number (Ali, Ptr, E_Line); if Ali (Ptr) > ' ' then E_Type := Ali (Ptr); Ptr := Ptr + 1; end if; -- Ignore some of the entities (labels,...) case E_Type is when 'l' | 'L' | 'q' => Parse_EOL (Ali, Ptr, Skip_Continuation_Line => True); return; when others => null; end case; Parse_Number (Ali, Ptr, E_Col); E_Global := False; if Ali (Ptr) >= ' ' then E_Global := (Ali (Ptr) = '*'); Ptr := Ptr + 1; end if; Parse_Token (Ali, Ptr, E_Name); -- Exit if the symbol does not match -- or if we have a local symbol and we do not want it if (not Local_Symbols and not E_Global) or else (Pattern.Initialized and then not Match (Ali (E_Name .. Ptr - 1), Pattern.Entity)) or else (E_Name >= Ptr) then Decl_Ref := Add_Declaration (File.X_File, Ali (E_Name .. Ptr - 1), E_Line, E_Col, E_Type, Remove_Only => True); Parse_EOL (Ali, Ptr, Skip_Continuation_Line => True); return; end if; -- Insert the declaration in the table Decl_Ref := Add_Declaration (File.X_File, Ali (E_Name .. Ptr - 1), E_Line, E_Col, E_Type); if Ali (Ptr) = '[' then Skip_To_Matching_Closing_Bracket; end if; -- Skip any renaming indication if Ali (Ptr) = '=' then declare P_Line, P_Column : Natural; pragma Warnings (Off, P_Line); pragma Warnings (Off, P_Column); begin Ptr := Ptr + 1; Parse_Number (Ali, Ptr, P_Line); Ptr := Ptr + 1; Parse_Number (Ali, Ptr, P_Column); end; end if; if Ali (Ptr) = '<' or else Ali (Ptr) = '(' or else Ali (Ptr) = '{' then -- Here we have a type derivation information. The format is -- <3|12I45> which means that the current entity is derived from the -- type defined in unit number 3, line 12 column 45. The pipe and -- unit number is optional. It is specified only if the parent type -- is not defined in the current unit. -- We also have the format for generic instantiations, as in -- 7a5*Uid(3|5I8[4|2]) 2|4r74 -- We could also have something like -- 16I9*I<integer> -- that indicates that I derives from the predefined type integer. Ptr := Ptr + 1; if Ali (Ptr) in '0' .. '9' then Parse_Derived_Info : declare P_Line : Natural; -- parent entity line P_Column : Natural; -- parent entity column P_Eun : Positive; -- parent entity file number begin Parse_Number (Ali, Ptr, P_Line); -- If we have a pipe then the first number was the unit number if Ali (Ptr) = '|' then P_Eun := P_Line; Ptr := Ptr + 1; -- Now we have the line number Parse_Number (Ali, Ptr, P_Line); else -- We don't have a unit number specified, so we set P_Eun to -- the current unit. for K in Dependencies_Tables.First .. Last (File.Dep) loop P_Eun := K; exit when File.Dep.Table (K) = File_Ref; end loop; end if; -- Then parse the type and column number Ptr := Ptr + 1; Parse_Number (Ali, Ptr, P_Column); -- Skip the information for generics instantiations if Ali (Ptr) = '[' then Skip_To_Matching_Closing_Bracket; end if; -- Skip '>', or ')' or '>' Ptr := Ptr + 1; -- The derived info is needed only is the derived info mode is -- on or if we want to output the type hierarchy if Der_Info or else Type_Tree then declare Symbol : constant String := Get_Symbol_Name (P_Eun, P_Line, P_Column); begin if Symbol /= "???" then Add_Parent (Decl_Ref, Symbol, P_Line, P_Column, File.Dep.Table (P_Eun)); end if; end; end if; if Type_Tree and then (Pattern.File_Ref = Empty_File or else Pattern.File_Ref = Current_Xref_File (File)) then Search_Parent_Tree : declare Pattern : Search_Pattern; -- Parent type pattern File_Pos_Backup : Positive; begin Add_Entity (Pattern, Get_Symbol_Name (P_Eun, P_Line, P_Column) & ':' & Get_Gnatchop_File (File.Dep.Table (P_Eun)) & ':' & Get_Line (Get_Parent (Decl_Ref)) & ':' & Get_Column (Get_Parent (Decl_Ref)), False); -- No default match is needed to look for the parent type -- since we are using the fully qualified symbol name: -- symbol:file:line:column Set_Default_Match (False); -- The parent hierarchy is defined in the same unit as -- the derived type. So we want to revisit the unit. File_Pos_Backup := File.Current_Line; Skip_To_First_X_Line (File, D_Lines => False, W_Lines => False); while File.Buffer (File.Current_Line) /= EOF loop Parse_X_Filename (File); Parse_Identifier_Info (Pattern => Pattern, File => File, Local_Symbols => False, Der_Info => Der_Info, Type_Tree => True, Wide_Search => False, Labels_As_Ref => Labels_As_Ref); end loop; File.Current_Line := File_Pos_Backup; end Search_Parent_Tree; end if; end Parse_Derived_Info; else while Ali (Ptr) /= '>' and then Ali (Ptr) /= ')' and then Ali (Ptr) /= '}' loop Ptr := Ptr + 1; end loop; Ptr := Ptr + 1; end if; end if; -- To find the body, we will have to parse the file too if Wide_Search then declare File_Ref : File_Reference; pragma Unreferenced (File_Ref); File_Name : constant String := Get_Gnatchop_File (File.X_File); begin File_Ref := Add_To_Xref_File (ALI_File_Name (File_Name), False); end; end if; -- Parse references to this entity. -- Ptr points to next reference with leading blanks loop -- Process references on current line while Ali (Ptr) = ' ' or else Ali (Ptr) = ASCII.HT loop -- For every reference read the line, type and column, -- optionally preceded by a file number and a pipe symbol. Parse_Number (Ali, Ptr, R_Line); if Ali (Ptr) = Pipe then Ptr := Ptr + 1; File_Ref := File_Name (File, R_Line); Parse_Number (Ali, Ptr, R_Line); end if; if Ali (Ptr) > ' ' then R_Type := Ali (Ptr); Ptr := Ptr + 1; end if; -- Imported entities might special indication as to their external -- name: -- 5U14*Foo2 5>20 6b<c,myfoo2>22 if R_Type = 'b' and then Ali (Ptr) = '<' then while Ptr <= Ali'Last and then Ali (Ptr) /= '>' loop Ptr := Ptr + 1; end loop; Ptr := Ptr + 1; end if; Parse_Number (Ali, Ptr, R_Col); -- Insert the reference or body in the table Add_Reference (Decl_Ref, File_Ref, R_Line, R_Col, R_Type, Labels_As_Ref); -- Skip generic information, if any if Ali (Ptr) = '[' then declare Num_Nested : Integer := 1; begin Ptr := Ptr + 1; while Num_Nested /= 0 loop if Ali (Ptr) = ']' then Num_Nested := Num_Nested - 1; elsif Ali (Ptr) = '[' then Num_Nested := Num_Nested + 1; end if; Ptr := Ptr + 1; end loop; end; end if; end loop; Parse_EOL (Ali, Ptr); -- Loop until new line is no continuation line exit when Ali (Ptr) /= '.'; Ptr := Ptr + 1; end loop; end Parse_Identifier_Info; ------------------ -- Parse_Number -- ------------------ procedure Parse_Number (Source : not null access String; Ptr : in out Positive; Number : out Natural) is begin -- Skip separators while Source (Ptr) = ' ' or else Source (Ptr) = ASCII.HT loop Ptr := Ptr + 1; end loop; Number := 0; while Source (Ptr) in '0' .. '9' loop Number := 10 * Number + (Character'Pos (Source (Ptr)) - Character'Pos ('0')); Ptr := Ptr + 1; end loop; end Parse_Number; ----------------- -- Parse_Token -- ----------------- procedure Parse_Token (Source : not null access String; Ptr : in out Positive; Token_Ptr : out Positive) is In_Quotes : Character := ASCII.NUL; begin -- Skip separators while Source (Ptr) = ' ' or else Source (Ptr) = ASCII.HT loop Ptr := Ptr + 1; end loop; Token_Ptr := Ptr; -- Find end-of-token while (In_Quotes /= ASCII.NUL or else not (Source (Ptr) = ' ' or else Source (Ptr) = ASCII.HT or else Source (Ptr) = '<' or else Source (Ptr) = '{' or else Source (Ptr) = '[' or else Source (Ptr) = '=' or else Source (Ptr) = '(')) and then Source (Ptr) >= ' ' loop -- Double-quotes are used for operators -- Simple-quotes are used for character constants, for instance when -- they are found in an enumeration type "type A is ('+', '-');" case Source (Ptr) is when '"' | ''' => if In_Quotes = Source (Ptr) then In_Quotes := ASCII.NUL; elsif In_Quotes = ASCII.NUL then In_Quotes := Source (Ptr); end if; when others => null; end case; Ptr := Ptr + 1; end loop; end Parse_Token; ---------------------- -- Parse_X_Filename -- ---------------------- procedure Parse_X_Filename (File : in out ALI_File) is Ali : String_Access renames File.Buffer; Ptr : Positive renames File.Current_Line; File_Nr : Natural; begin while Ali (Ptr) = 'X' loop -- The current line is the start of a new Xref file section, -- whose format looks like: -- " X 1 debug.ads" -- Skip the X and read the file number for the new X_File Ptr := Ptr + 1; Parse_Number (Ali, Ptr, File_Nr); if File_Nr > 0 then File.X_File := File.Dep.Table (File_Nr); end if; Parse_EOL (Ali, Ptr); end loop; end Parse_X_Filename; -------------------- -- Print_Gnatfind -- -------------------- procedure Print_Gnatfind (References : Boolean; Full_Path_Name : Boolean) is Decls : constant Declaration_Array_Access := Get_Declarations; Decl : Declaration_Reference; Arr : Reference_Array_Access; procedure Print_Ref (Ref : Reference; Msg : String := " "); -- Print a reference, according to the extended tag of the output --------------- -- Print_Ref -- --------------- procedure Print_Ref (Ref : Reference; Msg : String := " ") is F : String_Access := Osint.To_Host_File_Spec (Get_Gnatchop_File (Ref, Full_Path_Name)); Buffer : constant String := F.all & ":" & Get_Line (Ref) & ":" & Get_Column (Ref) & ": "; Num_Blanks : Integer := Longest_File_Name + 10 - Buffer'Length; begin Free (F); Num_Blanks := Integer'Max (0, Num_Blanks); Write_Line (Buffer & String'(1 .. Num_Blanks => ' ') & Msg & " " & Get_Symbol (Decl)); if Get_Source_Line (Ref)'Length /= 0 then Write_Line (" " & Get_Source_Line (Ref)); end if; end Print_Ref; -- Start of processing for Print_Gnatfind begin for D in Decls'Range loop Decl := Decls (D); if Match (Decl) then -- Output the declaration declare Parent : constant Declaration_Reference := Get_Parent (Decl); F : String_Access := Osint.To_Host_File_Spec (Get_Gnatchop_File (Decl, Full_Path_Name)); Buffer : constant String := F.all & ":" & Get_Line (Decl) & ":" & Get_Column (Decl) & ": "; Num_Blanks : Integer := Longest_File_Name + 10 - Buffer'Length; begin Free (F); Num_Blanks := Integer'Max (0, Num_Blanks); Write_Line (Buffer & String'(1 .. Num_Blanks => ' ') & "(spec) " & Get_Symbol (Decl)); if Parent /= Empty_Declaration then F := Osint.To_Host_File_Spec (Get_Gnatchop_File (Parent)); Write_Line (Buffer & String'(1 .. Num_Blanks => ' ') & " derived from " & Get_Symbol (Parent) & " (" & F.all & ':' & Get_Line (Parent) & ':' & Get_Column (Parent) & ')'); Free (F); end if; end; if Get_Source_Line (Decl)'Length /= 0 then Write_Line (" " & Get_Source_Line (Decl)); end if; -- Output the body (sorted) Arr := Get_References (Decl, Get_Bodies => True); for R in Arr'Range loop Print_Ref (Arr (R), "(body)"); end loop; Free (Arr); if References then Arr := Get_References (Decl, Get_Writes => True, Get_Reads => True); for R in Arr'Range loop Print_Ref (Arr (R)); end loop; Free (Arr); end if; end if; end loop; end Print_Gnatfind; ------------------ -- Print_Unused -- ------------------ procedure Print_Unused (Full_Path_Name : Boolean) is Decls : constant Declaration_Array_Access := Get_Declarations; Decl : Declaration_Reference; Arr : Reference_Array_Access; F : String_Access; begin for D in Decls'Range loop Decl := Decls (D); if References_Count (Decl, Get_Reads => True, Get_Writes => True) = 0 then F := Osint.To_Host_File_Spec (Get_Gnatchop_File (Decl, Full_Path_Name)); Write_Str (Get_Symbol (Decl) & " (" & Get_Full_Type (Decl) & ") " & F.all & ':' & Get_Line (Decl) & ':' & Get_Column (Decl)); Free (F); -- Print the body if any Arr := Get_References (Decl, Get_Bodies => True); for R in Arr'Range loop F := Osint.To_Host_File_Spec (Get_Gnatchop_File (Arr (R), Full_Path_Name)); Write_Str (' ' & F.all & ':' & Get_Line (Arr (R)) & ':' & Get_Column (Arr (R))); Free (F); end loop; Write_Eol; Free (Arr); end if; end loop; end Print_Unused; -------------- -- Print_Vi -- -------------- procedure Print_Vi (Full_Path_Name : Boolean) is Tab : constant Character := ASCII.HT; Decls : constant Declaration_Array_Access := Get_Declarations (Sorted => False); Decl : Declaration_Reference; Arr : Reference_Array_Access; F : String_Access; begin for D in Decls'Range loop Decl := Decls (D); F := Osint.To_Host_File_Spec (Get_File (Decl, Full_Path_Name)); Write_Line (Get_Symbol (Decl) & Tab & F.all & Tab & Get_Line (Decl)); Free (F); -- Print the body if any Arr := Get_References (Decl, Get_Bodies => True); for R in Arr'Range loop F := Osint.To_Host_File_Spec (Get_File (Arr (R), Full_Path_Name)); Write_Line (Get_Symbol (Decl) & Tab & F.all & Tab & Get_Line (Arr (R))); Free (F); end loop; Free (Arr); -- Print the modifications Arr := Get_References (Decl, Get_Writes => True, Get_Reads => True); for R in Arr'Range loop F := Osint.To_Host_File_Spec (Get_File (Arr (R), Full_Path_Name)); Write_Line (Get_Symbol (Decl) & Tab & F.all & Tab & Get_Line (Arr (R))); Free (F); end loop; Free (Arr); end loop; end Print_Vi; ---------------- -- Print_Xref -- ---------------- procedure Print_Xref (Full_Path_Name : Boolean) is Decls : constant Declaration_Array_Access := Get_Declarations; Decl : Declaration_Reference; Margin : constant := 10; -- Column where file names start procedure New_Line80; -- Go to start of new line procedure Print80 (S : String); -- Print the text, respecting the 80 columns rule procedure Print_Ref (Line, Column : String); -- The beginning of the output is aligned on a column multiple of 9 procedure Print_List (Decl : Declaration_Reference; Msg : String; Get_Reads : Boolean := False; Get_Writes : Boolean := False; Get_Bodies : Boolean := False); -- Print a list of references. If the list is not empty, Msg will -- be printed prior to the list. ---------------- -- New_Line80 -- ---------------- procedure New_Line80 is begin Write_Eol; Write_Str (String'(1 .. Margin - 1 => ' ')); end New_Line80; ------------- -- Print80 -- ------------- procedure Print80 (S : String) is Align : Natural := Margin - (Integer (Column) mod Margin); begin if Align = Margin then Align := 0; end if; Write_Str (String'(1 .. Align => ' ') & S); end Print80; --------------- -- Print_Ref -- --------------- procedure Print_Ref (Line, Column : String) is Line_Align : constant Integer := 4 - Line'Length; S : constant String := String'(1 .. Line_Align => ' ') & Line & ':' & Column; Align : Natural := Margin - (Integer (Output.Column) mod Margin); begin if Align = Margin then Align := 0; end if; if Integer (Output.Column) + Align + S'Length > 79 then New_Line80; Align := 0; end if; Write_Str (String'(1 .. Align => ' ') & S); end Print_Ref; ---------------- -- Print_List -- ---------------- procedure Print_List (Decl : Declaration_Reference; Msg : String; Get_Reads : Boolean := False; Get_Writes : Boolean := False; Get_Bodies : Boolean := False) is Arr : Reference_Array_Access := Get_References (Decl, Get_Writes => Get_Writes, Get_Reads => Get_Reads, Get_Bodies => Get_Bodies); File : File_Reference := Empty_File; F : String_Access; begin if Arr'Length /= 0 then Write_Eol; Write_Str (Msg); end if; for R in Arr'Range loop if Get_File_Ref (Arr (R)) /= File then if File /= Empty_File then New_Line80; end if; File := Get_File_Ref (Arr (R)); F := Osint.To_Host_File_Spec (Get_Gnatchop_File (Arr (R), Full_Path_Name)); if F = null then Write_Str ("<unknown> "); else Write_Str (F.all & ' '); Free (F); end if; end if; Print_Ref (Get_Line (Arr (R)), Get_Column (Arr (R))); end loop; Free (Arr); end Print_List; F : String_Access; -- Start of processing for Print_Xref begin for D in Decls'Range loop Decl := Decls (D); Write_Str (Get_Symbol (Decl)); -- Put the declaration type in column Type_Position, but if the -- declaration name is too long, put at least one space between its -- name and its type. while Column < Type_Position - 1 loop Write_Char (' '); end loop; Write_Char (' '); Write_Line (Get_Full_Type (Decl)); Write_Parent_Info : declare Parent : constant Declaration_Reference := Get_Parent (Decl); begin if Parent /= Empty_Declaration then Write_Str (" Ptype: "); F := Osint.To_Host_File_Spec (Get_Gnatchop_File (Parent)); Print80 (F.all); Free (F); Print_Ref (Get_Line (Parent), Get_Column (Parent)); Print80 (" " & Get_Symbol (Parent)); Write_Eol; end if; end Write_Parent_Info; Write_Str (" Decl: "); F := Osint.To_Host_File_Spec (Get_Gnatchop_File (Decl, Full_Path_Name)); if F = null then Print80 ("<unknown> "); else Print80 (F.all & ' '); Free (F); end if; Print_Ref (Get_Line (Decl), Get_Column (Decl)); Print_List (Decl, " Body: ", Get_Bodies => True); Print_List (Decl, " Modi: ", Get_Writes => True); Print_List (Decl, " Ref: ", Get_Reads => True); Write_Eol; end loop; end Print_Xref; ------------ -- Search -- ------------ procedure Search (Pattern : Search_Pattern; Local_Symbols : Boolean; Wide_Search : Boolean; Read_Only : Boolean; Der_Info : Boolean; Type_Tree : Boolean) is type String_Access is access String; procedure Free is new Unchecked_Deallocation (String, String_Access); ALIfile : ALI_File; File_Ref : File_Reference; Strip_Num : Natural := 0; Ali_Name : String_Access; begin -- If we want all the .ali files, then find them if Wide_Search then Find_ALI_Files; end if; loop -- Get the next unread ali file File_Ref := Next_Unvisited_File; exit when File_Ref = Empty_File; -- Find the ALI file to use. Most of the time, it will be the unit -- name, with a different extension. However, when dealing with -- separates the ALI file is in fact the parent's ALI file (and this -- is recursive, in case the parent itself is a separate). Strip_Num := 0; loop Free (Ali_Name); Ali_Name := new String' (Get_File (File_Ref, With_Dir => True, Strip => Strip_Num)); -- Stripped too many things... if Ali_Name.all = "" then if Get_Emit_Warning (File_Ref) then Set_Standard_Error; Write_Line ("warning : file " & Get_File (File_Ref, With_Dir => True) & " not found"); Set_Standard_Output; end if; Free (Ali_Name); exit; -- If not found, try the parent's ALI file (this is needed for -- separate units and subprograms). -- Reset the cached directory first, in case the separate's -- ALI file is not in the same directory. elsif not File_Exists (Ali_Name.all) then Strip_Num := Strip_Num + 1; Reset_Directory (File_Ref); -- Else we finally found it else exit; end if; end loop; -- If we had to get the parent's ALI, insert it in the list as usual. -- This is to avoid parsing it twice in case it has already been -- parsed. if Ali_Name /= null and then Strip_Num /= 0 then File_Ref := Add_To_Xref_File (File_Name => Ali_Name.all, Visited => False); -- Now that we have a file name, parse it to find any reference to -- the entity. elsif Ali_Name /= null and then (Read_Only or else Is_Writable_File (Ali_Name.all)) then begin Open (Ali_Name.all, ALIfile); -- The cross-reference section in the ALI file may be followed -- by other sections, which can be identified by the starting -- character of every line, which should neither be 'X' nor a -- figure in '1' .. '9'. -- The loop tests below also take into account the end-of-file -- possibility. while ALIfile.Buffer (ALIfile.Current_Line) = 'X' loop Parse_X_Filename (ALIfile); while ALIfile.Buffer (ALIfile.Current_Line) in '1' .. '9' loop Parse_Identifier_Info (Pattern, ALIfile, Local_Symbols, Der_Info, Type_Tree, Wide_Search, Labels_As_Ref => True); end loop; end loop; exception when No_Xref_Information => if Get_Emit_Warning (File_Ref) then Set_Standard_Error; Write_Line ("warning : No cross-referencing information in " & Ali_Name.all); Set_Standard_Output; end if; end; end if; end loop; Free (Ali_Name); end Search; ----------------- -- Search_Xref -- ----------------- procedure Search_Xref (Local_Symbols : Boolean; Read_Only : Boolean; Der_Info : Boolean) is ALIfile : ALI_File; File_Ref : File_Reference; Null_Pattern : Search_Pattern; begin Null_Pattern.Initialized := False; loop -- Find the next unvisited file File_Ref := Next_Unvisited_File; exit when File_Ref = Empty_File; -- Search the object directories for the .ali file declare F : constant String := Get_File (File_Ref, With_Dir => True); begin if Read_Only or else Is_Writable_File (F) then Open (F, ALIfile, True); -- The cross-reference section in the ALI file may be followed -- by other sections, which can be identified by the starting -- character of every line, which should neither be 'X' nor a -- figure in '1' .. '9'. -- The loop tests below also take into account the end-of-file -- possibility. while ALIfile.Buffer (ALIfile.Current_Line) = 'X' loop Parse_X_Filename (ALIfile); while ALIfile.Buffer (ALIfile.Current_Line) in '1' .. '9' loop Parse_Identifier_Info (Null_Pattern, ALIfile, Local_Symbols, Der_Info, Labels_As_Ref => False); end loop; end loop; end if; exception when No_Xref_Information => null; end; end loop; end Search_Xref; end Xref_Lib;
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