------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- X R E F _ L I B -- -- -- -- B o d y -- -- -- -- -- -- Copyright (C) 1998-2002 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 2, 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 COPYING. If not, write -- -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- -- MA 02111-1307, USA. -- -- -- -- 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 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 EOF : constant Character := ASCII.SUB; -- Special character to signal end of file. Not required in input file, -- but should be properly treated if present. See also Read_File. No_Xref_Information : exception; -- Exception raised when there is no cross-referencing information in -- the .ali files subtype File_Offset is Natural; procedure Read_File (FD : File_Descriptor; Contents : out String_Access; Success : out Boolean); -- Reads file associated with FS into the newly allocated -- string Contents. An EOF character will be added to the -- returned Contents to simplify parsing. -- [VMS] Success is true iff the number of bytes read is less than or -- equal to the file size. -- [Other] Success is true iff the number of bytes read is equal to -- the file size. procedure Parse_EOL (Source : access String; Ptr : in out Positive); -- On return Source (Ptr) is the first character of the next line -- or EOF. Source.all must be terminated by EOF. 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); -- 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 procedure Parse_Token (Source : 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 : access String; Ptr : in out Positive; Number : out Natural); -- Skips any separators and parses Source upto 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. ---------------- -- 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; File_Existed : Boolean; Has_Pattern : Boolean := False; 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 File_Start = 0 then -- If the regular expression is invalid, just consider it as a string 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; Has_Pattern := True; end if; -- Parse the file name Line_Start := Index (Entity (File_Start .. Entity'Last), ":"); -- Check if it was a disk:\directory item (for NT and OS/2) 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; Add_To_Xref_File (Entity (File_Start .. Line_Start - 1), File_Existed, File_Ref, Visited => True); Add_Line (File_Ref, Line_Num, Col_Num); Add_To_Xref_File (ALI_File_Name (Entity (File_Start .. Line_Start - 1)), File_Existed, File_Ref, Visited => False, Emit_Warning => True); end Add_Entity; ------------------- -- Add_Xref_File -- ------------------- procedure Add_Xref_File (File : String) is File_Ref : File_Reference := Empty_File; File_Existed : Boolean; 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) = ".ali" then Add_To_Xref_File (File, File_Existed, File_Ref, Visited => False, Emit_Warning => True); -- Normal non-ali file case else Add_To_Xref_File (File, File_Existed, File_Ref, Visited => True); Add_To_Xref_File (ALI_File_Name (File), File_Existed, File_Ref, 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_Existed : Boolean; File_Ref : File_Reference; 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 -- If there was no more Obj_Dir line 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 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) = ".ali" then Add_To_Xref_File (Dir_Ent (1 .. Last), File_Existed, File_Ref, Visited => False); Set_Directory (File_Ref, Current_Obj_Dir); end if; end loop; end if; end Find_ALI_Files; ------------------- -- Get_Full_Type -- ------------------- function Get_Full_Type (Abbrev : Character) return String is begin case Abbrev 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 '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 "array type"; when 'b' => return "boolean object"; when 'c' => return "class-wide object"; when 'd' => return "decimal object"; when 'e' => return "enumeration object"; when 'f' => return "float object"; when 'i' => return "integer object"; when 'm' => return "modular object"; when 'o' => return "fixed object"; when 'p' => return "access object"; when 'r' => return "record object"; when 's' => return "string object"; when 't' => return "task object"; when 'w' => return "protected object"; 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 '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"; -- The above should be the only possibilities, but for a -- tool like this we don't want to bomb if we find something -- else, so just return ??? when we have an unknown Abbrev value when others => return "???"; end case; end Get_Full_Type; ----------- -- Match -- ----------- function Match (Pattern : Search_Pattern; Symbol : String) return Boolean is begin -- Get the entity name return Match (Symbol, Pattern.Entity); end Match; ---------- -- Open -- ---------- procedure Open (Name : String; File : out ALI_File; Dependencies : Boolean := False) is Name_0 : constant String := Name & ASCII.NUL; Num_Dependencies : Natural := 0; File_Existed : Boolean; File_Ref : File_Reference; FD : File_Descriptor; Success : Boolean := False; Ali : String_Access renames File.Buffer; Token : Positive; Ptr : Positive; File_Start : Positive; File_End : Positive; Gnatchop_Offset : Integer; Gnatchop_Name : Positive; begin if File.Buffer /= null then Free (File.Buffer); end if; Init (File.Dep); FD := Open_Read (Name_0'Address, Binary); if FD = Invalid_FD then raise No_Xref_Information; end if; Read_File (FD, Ali, Success); Close (FD); Ptr := Ali'First; -- 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 Ali (Ptr) = 'D' then -- Found dependency information. Format looks like: -- D source-name time-stamp checksum [subunit-name] \ -- [line:file-name] -- Skip the D and parse the filename 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; Add_To_Xref_File (Ali (File_Start .. File_End), File_Existed, File.Dep.Table (Num_Dependencies), Gnatchop_File => Ali (Token .. Ptr - 1), Gnatchop_Offset => Gnatchop_Offset); elsif Dependencies 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); Add_To_Xref_File (Ali (Token .. Ptr - 1), File_Existed, File_Ref, 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 Open; --------------- -- Parse_EOL -- --------------- procedure Parse_EOL (Source : access String; Ptr : in out Positive) is begin -- 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; if Source (Ptr) /= EOF then Ptr := Ptr + 1; -- skip CR or LF 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; 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) 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. --------------------- -- 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 E_Type : Character; -- Type of current entity procedure Skip_Line; -- skip current line and continuation line procedure Skip_Line is begin loop Parse_EOL (Ali, Ptr); exit when Ali (Ptr) /= '.'; end loop; end Skip_Line; -- Start of processing for Get_Symbol_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; Skip_Line; 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); E_Type := Ali (Ptr); Ptr := Ptr + 1; Parse_Number (Ali, Ptr, E_Col); 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; Skip_Line; end loop; -- We were not able to find the symbol, this should not happend 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; -- 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; 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 (Pattern, Ali (E_Name .. Ptr - 1))) or else (E_Name >= Ptr) then -- Skip rest of this line and all continuation lines loop Parse_EOL (Ali, Ptr); exit when Ali (Ptr) /= '.'; end loop; 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) = '<' 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 could also have something like -- 16I9*I -- 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_Type : Character; -- parent entity type 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 P_Type := Ali (Ptr); Ptr := Ptr + 1; Parse_Number (Ali, Ptr, P_Column); -- 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 Add_Parent (Decl_Ref, Get_Symbol_Name (P_Eun, P_Line, P_Column), P_Line, P_Column, File.Dep.Table (P_Eun)); end if; if Type_Tree 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 type is defined in the same unit as the -- derived type. So we want to revisit the unit. File_Pos_Backup := File.Current_Line; if File.Dep.Table (P_Eun) = File_Ref then -- set file pointer at the start of the xref lines File.Current_Line := File.Xref_Line; Revisit_ALI_File : declare File_Existed : Boolean; File_Ref : File_Reference; begin Add_To_Xref_File (ALI_File_Name (Get_File (File.Dep.Table (P_Eun))), File_Existed, File_Ref, Visited => False); Set_Unvisited (File_Ref); end Revisit_ALI_File; end if; Search (Pattern, Local_Symbols, False, False, Der_Info, Type_Tree); 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; elsif Ali (Ptr) = '=' then declare P_Line, P_Column : Natural; begin Ptr := Ptr + 1; Parse_Number (Ali, Ptr, P_Line); Ptr := Ptr + 1; Parse_Number (Ali, Ptr, P_Column); end; end if; -- To find the body, we will have to parse the file too if Wide_Search then declare File_Existed : Boolean; File_Ref : File_Reference; File_Name : constant String := Get_Gnatchop_File (File.X_File); begin Add_To_Xref_File (ALI_File_Name (File_Name), File_Existed, File_Ref, 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 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; 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); -- 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 : 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 : access String; Ptr : in out Positive; Token_Ptr : out Positive) is In_Quotes : Boolean := False; 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 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) = '(')) and then Source (Ptr) >= ' ' loop if Source (Ptr) = '"' then In_Quotes := not In_Quotes; end if; 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 Decl : Declaration_Reference := First_Declaration; Ref1 : Reference; Ref2 : Reference; 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 Buffer : constant String := Osint.To_Host_File_Spec (Get_Gnatchop_File (Ref, Full_Path_Name)).all & ":" & Get_Line (Ref) & ":" & Get_Column (Ref) & ": "; Num_Blanks : Integer := Longest_File_Name + 10 - Buffer'Length; begin 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 while Decl /= Empty_Declaration loop if Match (Decl) then -- Output the declaration declare Parent : constant Declaration_Reference := Get_Parent (Decl); Buffer : constant String := Osint.To_Host_File_Spec (Get_Gnatchop_File (Decl, Full_Path_Name)).all & ":" & Get_Line (Decl) & ":" & Get_Column (Decl) & ": "; Num_Blanks : Integer := Longest_File_Name + 10 - Buffer'Length; begin Num_Blanks := Integer'Max (0, Num_Blanks); Write_Line (Buffer & String'(1 .. Num_Blanks => ' ') & "(spec) " & Get_Symbol (Decl)); if Parent /= Empty_Declaration then Write_Line (Buffer & String'(1 .. Num_Blanks => ' ') & " derived from " & Get_Symbol (Parent) & " (" & Osint.To_Host_File_Spec (Get_Gnatchop_File (Parent)).all & ':' & Get_Line (Parent) & ':' & Get_Column (Parent) & ')'); end if; end; if Get_Source_Line (Decl)'Length /= 0 then Write_Line (" " & Get_Source_Line (Decl)); end if; -- Output the body (sorted) Ref1 := First_Body (Decl); while Ref1 /= Empty_Reference loop Print_Ref (Ref1, "(body)"); Ref1 := Next (Ref1); end loop; if References then Ref1 := First_Modif (Decl); Ref2 := First_Reference (Decl); while Ref1 /= Empty_Reference or else Ref2 /= Empty_Reference loop if Compare (Ref1, Ref2) = LessThan then Print_Ref (Ref1); Ref1 := Next (Ref1); else Print_Ref (Ref2); Ref2 := Next (Ref2); end if; end loop; end if; end if; Decl := Next (Decl); end loop; end Print_Gnatfind; ------------------ -- Print_Unused -- ------------------ procedure Print_Unused (Full_Path_Name : in Boolean) is Decl : Declaration_Reference := First_Declaration; Ref : Reference; begin while Decl /= Empty_Declaration loop if First_Modif (Decl) = Empty_Reference and then First_Reference (Decl) = Empty_Reference then Write_Str (Get_Symbol (Decl) & " " & Get_Type (Decl) & " " & Osint.To_Host_File_Spec (Get_Gnatchop_File (Decl, Full_Path_Name)).all & ':' & Get_Line (Decl) & ':' & Get_Column (Decl)); -- Print the body if any Ref := First_Body (Decl); if Ref /= Empty_Reference then Write_Line (' ' & Osint.To_Host_File_Spec (Get_Gnatchop_File (Ref, Full_Path_Name)).all & ':' & Get_Line (Ref) & ':' & Get_Column (Ref)); else Write_Eol; end if; end if; Decl := Next (Decl); end loop; end Print_Unused; -------------- -- Print_Vi -- -------------- procedure Print_Vi (Full_Path_Name : in Boolean) is Tab : constant Character := ASCII.HT; Decl : Declaration_Reference := First_Declaration; Ref : Reference; begin while Decl /= Empty_Declaration loop Write_Line (Get_Symbol (Decl) & Tab & Get_File (Decl, Full_Path_Name) & Tab & Get_Line (Decl)); -- Print the body if any Ref := First_Body (Decl); if Ref /= Empty_Reference then Write_Line (Get_Symbol (Decl) & Tab & Get_File (Ref, Full_Path_Name) & Tab & Get_Line (Ref)); end if; -- Print the modifications Ref := First_Modif (Decl); while Ref /= Empty_Reference loop Write_Line (Get_Symbol (Decl) & Tab & Get_File (Ref, Full_Path_Name) & Tab & Get_Line (Ref)); Ref := Next (Ref); end loop; Decl := Next (Decl); end loop; end Print_Vi; ---------------- -- Print_Xref -- ---------------- procedure Print_Xref (Full_Path_Name : in Boolean) is Decl : Declaration_Reference := First_Declaration; Ref : Reference; File : File_Reference; Margin : constant := 10; -- Column where file names start procedure New_Line80; -- Go to start of new line procedure Print80 (S : in 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 ---------------- -- New_Line80 -- ---------------- procedure New_Line80 is begin Write_Eol; Write_Str (String'(1 .. Margin - 1 => ' ')); end New_Line80; ------------- -- Print80 -- ------------- procedure Print80 (S : in 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; -- Start of processing for Print_Xref begin while Decl /= Empty_Declaration loop Write_Str (Get_Symbol (Decl)); while Column < Type_Position loop Write_Char (' '); end loop; Write_Line (Get_Full_Type (Get_Type (Decl))); Write_Parent_Info : declare Parent : constant Declaration_Reference := Get_Parent (Decl); begin if Parent /= Empty_Declaration then Write_Str (" Ptype: "); Print80 (Osint.To_Host_File_Spec (Get_Gnatchop_File (Parent)).all); Print_Ref (Get_Line (Parent), Get_Column (Parent)); Print80 (" " & Get_Symbol (Parent)); Write_Eol; end if; end Write_Parent_Info; Write_Str (" Decl: "); Print80 (Osint.To_Host_File_Spec (Get_Gnatchop_File (Decl, Full_Path_Name)).all & ' '); Print_Ref (Get_Line (Decl), Get_Column (Decl)); -- Print the body if any Ref := First_Body (Decl); if Ref /= Empty_Reference then Write_Eol; Write_Str (" Body: "); Print80 (Osint.To_Host_File_Spec (Get_Gnatchop_File (Ref, Full_Path_Name)).all & ' '); Print_Ref (Get_Line (Ref), Get_Column (Ref)); end if; -- Print the modifications if any Ref := First_Modif (Decl); if Ref /= Empty_Reference then Write_Eol; Write_Str (" Modi: "); end if; File := Empty_File; while Ref /= Empty_Reference loop if Get_File_Ref (Ref) /= File then if File /= Empty_File then New_Line80; end if; File := Get_File_Ref (Ref); Write_Str (Get_Gnatchop_File (Ref, Full_Path_Name) & ' '); Print_Ref (Get_Line (Ref), Get_Column (Ref)); else Print_Ref (Get_Line (Ref), Get_Column (Ref)); end if; Ref := Next (Ref); end loop; -- Print the references Ref := First_Reference (Decl); if Ref /= Empty_Reference then Write_Eol; Write_Str (" Ref: "); end if; File := Empty_File; while Ref /= Empty_Reference loop if Get_File_Ref (Ref) /= File then if File /= Empty_File then New_Line80; end if; File := Get_File_Ref (Ref); Write_Str (Osint.To_Host_File_Spec (Get_Gnatchop_File (Ref, Full_Path_Name)).all & ' '); Print_Ref (Get_Line (Ref), Get_Column (Ref)); else Print_Ref (Get_Line (Ref), Get_Column (Ref)); end if; Ref := Next (Ref); end loop; Write_Eol; Decl := Next (Decl); end loop; end Print_Xref; --------------- -- Read_File -- --------------- procedure Read_File (FD : File_Descriptor; Contents : out String_Access; Success : out Boolean) is Length : constant File_Offset := File_Offset (File_Length (FD)); -- Include room for EOF char Buffer : String (1 .. Length + 1); This_Read : Integer; Read_Ptr : File_Offset := 1; begin loop This_Read := Read (FD, A => Buffer (Read_Ptr)'Address, N => Length + 1 - Read_Ptr); Read_Ptr := Read_Ptr + Integer'Max (This_Read, 0); exit when This_Read <= 0; end loop; Buffer (Read_Ptr) := EOF; Contents := new String'(Buffer (1 .. Read_Ptr)); -- Things aren't simple on VMS due to the plethora of file types -- and organizations. It seems clear that there shouldn't be more -- bytes read than are contained in the file though. if Hostparm.OpenVMS then Success := Read_Ptr <= Length + 1; else Success := Read_Ptr = Length + 1; end if; end Read_File; ------------ -- 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)); -- Striped 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). elsif not File_Exists (Ali_Name.all) then Strip_Num := Strip_Num + 1; -- Else we finally found it else exit; end if; end loop; -- Now that we have a file name, parse it to find any reference to -- the entity. if Ali_Name /= null and then (Read_Only or else Is_Writable_File (Ali_Name.all)) then begin Open (Ali_Name.all, ALIfile); while ALIfile.Buffer (ALIfile.Current_Line) /= EOF loop Parse_X_Filename (ALIfile); Parse_Identifier_Info (Pattern, ALIfile, Local_Symbols, Der_Info, Type_Tree, Wide_Search); 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 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 if Read_Only or else Is_Writable_File (Get_File (File_Ref, With_Dir => True)) then begin Open (Get_File (File_Ref, With_Dir => True), ALIfile, True); while ALIfile.Buffer (ALIfile.Current_Line) /= EOF loop Parse_X_Filename (ALIfile); Parse_Identifier_Info (Null_Pattern, ALIfile, Local_Symbols, Der_Info); end loop; exception when No_Xref_Information => null; end; end if; end loop; end Search_Xref; end Xref_Lib;