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1 files changed, 788 insertions, 0 deletions

diff --git a/gcc/ada/prepcomp.adb b/gcc/ada/prepcomp.adb
new file mode 100644
index 000000000..62f962aa4
--- /dev/null
+++ b/gcc/ada/prepcomp.adb
@@ -0,0 +1,788 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                             P R E P C O M P                              --
+--                                                                          --
+--                                 B o d y                                  --
+--                                                                          --
+--          Copyright (C) 2003-2010, 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 Ada.Unchecked_Deallocation;
+
+with Errout;   use Errout;
+with Lib.Writ; use Lib.Writ;
+with Opt;      use Opt;
+with Osint;    use Osint;
+with Prep;     use Prep;
+with Scans;    use Scans;
+with Scn;      use Scn;
+with Sinput.L; use Sinput.L;
+with Stringt;  use Stringt;
+with Table;
+with Types;    use Types;
+
+package body Prepcomp is
+
+   No_Preprocessing : Boolean := True;
+   --  Set to False if there is at least one source that needs to be
+   --  preprocessed.
+
+   Source_Index_Of_Preproc_Data_File : Source_File_Index := No_Source_File;
+
+   --  The following variable should be a constant, but this is not possible
+   --  because its type GNAT.Dynamic_Tables.Instance has a component P of
+   --  uninitialized private type GNAT.Dynamic_Tables.Table_Private and there
+   --  are no exported values for this private type. Warnings are Off because
+   --  it is never assigned a value.
+
+   pragma Warnings (Off);
+   No_Mapping : Prep.Symbol_Table.Instance;
+   pragma Warnings (On);
+
+   type String_Ptr is access String;
+   type String_Array is array (Positive range <>) of String_Ptr;
+   type String_Array_Ptr is access String_Array;
+
+   procedure Free is
+      new Ada.Unchecked_Deallocation (String_Array, String_Array_Ptr);
+
+   Symbol_Definitions : String_Array_Ptr := new String_Array (1 .. 4);
+   --  An extensible array to temporarily stores symbol definitions specified
+   --  on the command line with -gnateD switches.
+
+   Last_Definition : Natural := 0;
+   --  Index of last symbol definition in array Symbol_Definitions
+
+   type Preproc_Data is record
+      Mapping      : Symbol_Table.Instance;
+      File_Name    : File_Name_Type := No_File;
+      Deffile      : String_Id      := No_String;
+      Undef_False  : Boolean        := False;
+      Always_Blank : Boolean        := False;
+      Comments     : Boolean        := False;
+      List_Symbols : Boolean        := False;
+      Processed    : Boolean        := False;
+   end record;
+   --  Structure to keep the preprocessing data for a file name or for the
+   --  default (when Name_Id = No_Name).
+
+   No_Preproc_Data : constant Preproc_Data :=
+     (Mapping      => No_Mapping,
+      File_Name    => No_File,
+      Deffile      => No_String,
+      Undef_False  => False,
+      Always_Blank => False,
+      Comments     => False,
+      List_Symbols => False,
+      Processed    => False);
+
+   Default_Data : Preproc_Data := No_Preproc_Data;
+   --  The preprocessing data to be used when no specific preprocessing data
+   --  is specified for a source.
+
+   Default_Data_Defined : Boolean := False;
+   --  True if source for which no specific preprocessing is specified need to
+   --  be preprocess with the Default_Data.
+
+   Current_Data : Preproc_Data := No_Preproc_Data;
+
+   package Preproc_Data_Table is new Table.Table
+     (Table_Component_Type => Preproc_Data,
+      Table_Index_Type     => Int,
+      Table_Low_Bound      => 1,
+      Table_Initial        => 5,
+      Table_Increment      => 100,
+      Table_Name           => "Prepcomp.Preproc_Data_Table");
+   --  Table to store the specific preprocessing data
+
+   Command_Line_Symbols : Symbol_Table.Instance;
+   --  A table to store symbol definitions specified on the command line with
+   --  -gnateD switches.
+
+   package Dependencies is new Table.Table
+     (Table_Component_Type => Source_File_Index,
+      Table_Index_Type     => Int,
+      Table_Low_Bound      => 1,
+      Table_Initial        => 10,
+      Table_Increment      => 100,
+      Table_Name           => "Prepcomp.Dependencies");
+   --  Table to store the dependencies on preprocessing files
+
+   procedure Add_Command_Line_Symbols;
+   --  Add the command line symbol definitions, if any, to Prep.Mapping table
+
+   procedure Skip_To_End_Of_Line;
+   --  Ignore errors and scan up to the next end of line or the end of file
+
+   ------------------------------
+   -- Add_Command_Line_Symbols --
+   ------------------------------
+
+   procedure Add_Command_Line_Symbols is
+      Symbol_Id : Prep.Symbol_Id;
+
+   begin
+      for J in 1 .. Symbol_Table.Last (Command_Line_Symbols) loop
+         Symbol_Id := Prep.Index_Of (Command_Line_Symbols.Table (J).Symbol);
+
+         if Symbol_Id = No_Symbol then
+            Symbol_Table.Increment_Last (Prep.Mapping);
+            Symbol_Id := Symbol_Table.Last (Prep.Mapping);
+         end if;
+
+         Prep.Mapping.Table (Symbol_Id) := Command_Line_Symbols.Table (J);
+      end loop;
+   end Add_Command_Line_Symbols;
+
+   ----------------------
+   -- Add_Dependencies --
+   ----------------------
+
+   procedure Add_Dependencies is
+   begin
+      for Index in 1 .. Dependencies.Last loop
+         Add_Preprocessing_Dependency (Dependencies.Table (Index));
+      end loop;
+   end Add_Dependencies;
+
+   ---------------------------
+   -- Add_Symbol_Definition --
+   ---------------------------
+
+   procedure Add_Symbol_Definition (Def : String) is
+   begin
+      --  If Symbol_Definitions is not large enough, double it
+
+      if Last_Definition = Symbol_Definitions'Last then
+         declare
+            New_Symbol_Definitions : constant String_Array_Ptr :=
+              new String_Array (1 .. 2 * Last_Definition);
+
+         begin
+            New_Symbol_Definitions (Symbol_Definitions'Range) :=
+              Symbol_Definitions.all;
+            Free (Symbol_Definitions);
+            Symbol_Definitions := New_Symbol_Definitions;
+         end;
+      end if;
+
+      Last_Definition := Last_Definition + 1;
+      Symbol_Definitions (Last_Definition) := new String'(Def);
+   end Add_Symbol_Definition;
+
+   -------------------
+   -- Check_Symbols --
+   -------------------
+
+   procedure Check_Symbols is
+   begin
+      --  If there is at least one switch -gnateD specified
+
+      if Symbol_Table.Last (Command_Line_Symbols) >= 1 then
+         Current_Data := No_Preproc_Data;
+         No_Preprocessing := False;
+         Current_Data.Processed := True;
+
+         --  Start with an empty, initialized mapping table; use Prep.Mapping,
+         --  because Prep.Index_Of uses Prep.Mapping.
+
+         Prep.Mapping := No_Mapping;
+         Symbol_Table.Init (Prep.Mapping);
+
+         --  Add the command line symbols
+
+         Add_Command_Line_Symbols;
+
+         --  Put the resulting Prep.Mapping in Current_Data, and immediately
+         --  set Prep.Mapping to nil.
+
+         Current_Data.Mapping := Prep.Mapping;
+         Prep.Mapping := No_Mapping;
+
+         --  Set the default data
+
+         Default_Data := Current_Data;
+         Default_Data_Defined := True;
+      end if;
+   end Check_Symbols;
+
+   ------------------------------
+   -- Parse_Preprocessing_Data --
+   ------------------------------
+
+   procedure Parse_Preprocessing_Data_File (N : File_Name_Type) is
+      OK            : Boolean := False;
+      Dash_Location : Source_Ptr;
+      Symbol_Data   : Prep.Symbol_Data;
+      Symbol_Id     : Prep.Symbol_Id;
+      T             : constant Nat := Total_Errors_Detected;
+
+   begin
+      --  Load the preprocessing data file
+
+      Source_Index_Of_Preproc_Data_File := Load_Preprocessing_Data_File (N);
+
+      --  Fail if preprocessing data file cannot be found
+
+      if Source_Index_Of_Preproc_Data_File = No_Source_File then
+         Get_Name_String (N);
+         Fail ("preprocessing data file """
+               & Name_Buffer (1 .. Name_Len)
+               & """ not found");
+      end if;
+
+      --  Initialize scanner and set its behavior for processing a data file
+
+      Scn.Scanner.Initialize_Scanner (Source_Index_Of_Preproc_Data_File);
+      Scn.Scanner.Set_End_Of_Line_As_Token (True);
+      Scn.Scanner.Reset_Special_Characters;
+
+      For_Each_Line : loop
+         <<Scan_Line>>
+         Scan;
+
+         exit For_Each_Line when Token = Tok_EOF;
+
+         if Token = Tok_End_Of_Line then
+            goto Scan_Line;
+         end if;
+
+         --  Line is not empty
+
+         OK := False;
+         No_Preprocessing := False;
+         Current_Data := No_Preproc_Data;
+
+         case Token is
+            when Tok_Asterisk =>
+
+               --  Default data
+
+               if Default_Data_Defined then
+                  Error_Msg
+                    ("multiple default preprocessing data", Token_Ptr);
+
+               else
+                  OK := True;
+                  Default_Data_Defined := True;
+               end if;
+
+            when Tok_String_Literal =>
+
+               --  Specific data
+
+               String_To_Name_Buffer (String_Literal_Id);
+               Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
+               Current_Data.File_Name := Name_Find;
+               OK := True;
+
+               for Index in 1 .. Preproc_Data_Table.Last loop
+                  if Current_Data.File_Name =
+                       Preproc_Data_Table.Table (Index).File_Name
+                  then
+                     Error_Msg_File_1 := Current_Data.File_Name;
+                     Error_Msg
+                       ("multiple preprocessing data for{", Token_Ptr);
+                     OK := False;
+                     exit;
+                  end if;
+               end loop;
+
+            when others =>
+               Error_Msg ("`'*` or literal string expected", Token_Ptr);
+         end case;
+
+         --  If there is a problem, skip the line
+
+         if not OK then
+            Skip_To_End_Of_Line;
+            goto Scan_Line;
+         end if;
+
+         --  Scan past the * or the literal string
+
+         Scan;
+
+         --  A literal string in second position is a definition file
+
+         if Token = Tok_String_Literal then
+            Current_Data.Deffile := String_Literal_Id;
+            Current_Data.Processed := False;
+            Scan;
+
+         else
+            --  If there is no definition file, set Processed to True now
+
+            Current_Data.Processed := True;
+         end if;
+
+         --  Start with an empty, initialized mapping table; use Prep.Mapping,
+         --  because Prep.Index_Of uses Prep.Mapping.
+
+         Prep.Mapping := No_Mapping;
+         Symbol_Table.Init (Prep.Mapping);
+
+         --  Check the switches that may follow
+
+         while Token /= Tok_End_Of_Line and then Token /= Tok_EOF loop
+            if Token /= Tok_Minus then
+               Error_Msg -- CODEFIX
+                 ("`'-` expected", Token_Ptr);
+               Skip_To_End_Of_Line;
+               goto Scan_Line;
+            end if;
+
+            --  Keep the location of the '-' for possible error reporting
+
+            Dash_Location := Token_Ptr;
+
+            --  Scan past the '-'
+
+            Scan;
+            OK := False;
+            Change_Reserved_Keyword_To_Symbol;
+
+            --  An identifier (or a reserved word converted to an
+            --  identifier) is expected and there must be no blank space
+            --  between the '-' and the identifier.
+
+            if Token = Tok_Identifier
+              and then Token_Ptr = Dash_Location + 1
+            then
+               Get_Name_String (Token_Name);
+
+               --  Check the character in the source, because the case is
+               --  significant.
+
+               case Sinput.Source (Token_Ptr) is
+                  when 'u' =>
+
+                     --  Undefined symbol are False
+
+                     if Name_Len = 1 then
+                        Current_Data.Undef_False := True;
+                        OK := True;
+                     end if;
+
+                  when 'b' =>
+
+                     --  Blank lines
+
+                     if Name_Len = 1 then
+                        Current_Data.Always_Blank := True;
+                        OK := True;
+                     end if;
+
+                  when 'c' =>
+
+                     --  Comment removed lines
+
+                     if Name_Len = 1 then
+                        Current_Data.Comments := True;
+                        OK := True;
+                     end if;
+
+                  when 's' =>
+
+                     --  List symbols
+
+                     if Name_Len = 1 then
+                        Current_Data.List_Symbols := True;
+                        OK := True;
+                     end if;
+
+                  when 'D' =>
+
+                     --  Symbol definition
+
+                     OK := Name_Len > 1;
+
+                     if OK then
+
+                        --  A symbol must be an Ada identifier; it cannot start
+                        --  with an underline or a digit.
+
+                        if Name_Buffer (2) = '_'
+                          or else Name_Buffer (2) in '0' .. '9'
+                        then
+                           Error_Msg ("symbol expected", Token_Ptr + 1);
+                           Skip_To_End_Of_Line;
+                           goto Scan_Line;
+                        end if;
+
+                        --  Get the name id of the symbol
+
+                        Symbol_Data.On_The_Command_Line := True;
+                        Name_Buffer (1 .. Name_Len - 1) :=
+                          Name_Buffer (2 .. Name_Len);
+                        Name_Len := Name_Len - 1;
+                        Symbol_Data.Symbol := Name_Find;
+
+                        if Name_Buffer (1 .. Name_Len) = "if"
+                          or else Name_Buffer (1 .. Name_Len) = "else"
+                          or else Name_Buffer (1 .. Name_Len) = "elsif"
+                          or else Name_Buffer (1 .. Name_Len) = "end"
+                          or else Name_Buffer (1 .. Name_Len) = "not"
+                          or else Name_Buffer (1 .. Name_Len) = "and"
+                          or else Name_Buffer (1 .. Name_Len) = "then"
+                        then
+                           Error_Msg ("symbol expected", Token_Ptr + 1);
+                           Skip_To_End_Of_Line;
+                           goto Scan_Line;
+                        end if;
+
+                        --  Get the name id of the original symbol, with
+                        --  possibly capital letters.
+
+                        Name_Len := Integer (Scan_Ptr - Token_Ptr - 1);
+
+                        for J in 1 .. Name_Len loop
+                           Name_Buffer (J) :=
+                             Sinput.Source (Token_Ptr + Text_Ptr (J));
+                        end loop;
+
+                        Symbol_Data.Original := Name_Find;
+
+                        --  Scan past D<symbol>
+
+                        Scan;
+
+                        if Token /= Tok_Equal then
+                           Error_Msg -- CODEFIX
+                             ("`=` expected", Token_Ptr);
+                           Skip_To_End_Of_Line;
+                           goto Scan_Line;
+                        end if;
+
+                        --  Scan past '='
+
+                        Scan;
+
+                        --  Here any reserved word is OK
+
+                        Change_Reserved_Keyword_To_Symbol
+                          (All_Keywords => True);
+
+                        --  Value can be an identifier (or a reserved word)
+                        --  or a literal string.
+
+                        case Token is
+                           when Tok_String_Literal =>
+                              Symbol_Data.Is_A_String := True;
+                              Symbol_Data.Value := String_Literal_Id;
+
+                           when Tok_Identifier =>
+                              Symbol_Data.Is_A_String := False;
+                              Start_String;
+
+                              for J in Token_Ptr .. Scan_Ptr - 1 loop
+                                 Store_String_Char (Sinput.Source (J));
+                              end loop;
+
+                              Symbol_Data.Value := End_String;
+
+                           when others =>
+                              Error_Msg
+                                ("literal string or identifier expected",
+                                 Token_Ptr);
+                              Skip_To_End_Of_Line;
+                              goto Scan_Line;
+                        end case;
+
+                        --  If symbol already exists, replace old definition
+                        --  by new one.
+
+                        Symbol_Id := Prep.Index_Of (Symbol_Data.Symbol);
+
+                        --  Otherwise, add a new entry in the table
+
+                        if Symbol_Id = No_Symbol then
+                           Symbol_Table.Increment_Last (Prep.Mapping);
+                           Symbol_Id := Symbol_Table.Last (Mapping);
+                        end if;
+
+                        Prep.Mapping.Table (Symbol_Id) := Symbol_Data;
+                     end if;
+
+                  when others =>
+                     null;
+               end case;
+
+               Scan;
+            end if;
+
+            if not OK then
+               Error_Msg ("invalid switch", Dash_Location);
+               Skip_To_End_Of_Line;
+               goto Scan_Line;
+            end if;
+         end loop;
+
+         --  Add the command line symbols, if any, possibly replacing symbols
+         --  just defined.
+
+         Add_Command_Line_Symbols;
+
+         --  Put the resulting Prep.Mapping in Current_Data, and immediately
+         --  set Prep.Mapping to nil.
+
+         Current_Data.Mapping := Prep.Mapping;
+         Prep.Mapping := No_Mapping;
+
+         --  Record Current_Data
+
+         if Current_Data.File_Name = No_File then
+            Default_Data := Current_Data;
+
+         else
+            Preproc_Data_Table.Increment_Last;
+            Preproc_Data_Table.Table (Preproc_Data_Table.Last) := Current_Data;
+         end if;
+
+         Current_Data := No_Preproc_Data;
+      end loop For_Each_Line;
+
+      Scn.Scanner.Set_End_Of_Line_As_Token (False);
+
+      --  Fail if there were errors in the preprocessing data file
+
+      if Total_Errors_Detected > T then
+         Errout.Finalize (Last_Call => True);
+         Errout.Output_Messages;
+         Fail ("errors found in preprocessing data file """
+               & Get_Name_String (N) & """");
+      end if;
+
+      --  Record the dependency on the preprocessor data file
+
+      Dependencies.Increment_Last;
+      Dependencies.Table (Dependencies.Last) :=
+        Source_Index_Of_Preproc_Data_File;
+   end Parse_Preprocessing_Data_File;
+
+   ---------------------------
+   -- Prepare_To_Preprocess --
+   ---------------------------
+
+   procedure Prepare_To_Preprocess
+     (Source               : File_Name_Type;
+      Preprocessing_Needed : out Boolean)
+   is
+      Default : Boolean := False;
+      Index   : Int := 0;
+
+   begin
+      --  By default, preprocessing is not needed
+
+      Preprocessing_Needed := False;
+
+      if No_Preprocessing then
+         return;
+      end if;
+
+      --  First, look for preprocessing data specific to the current source
+
+      for J in 1 .. Preproc_Data_Table.Last loop
+         if Preproc_Data_Table.Table (J).File_Name = Source then
+            Index := J;
+            Current_Data := Preproc_Data_Table.Table (J);
+            exit;
+         end if;
+      end loop;
+
+      --  If no specific preprocessing data, then take the default
+
+      if Index = 0 then
+         if Default_Data_Defined then
+            Current_Data := Default_Data;
+            Default := True;
+
+         else
+            --  If no default, then nothing to do
+
+            return;
+         end if;
+      end if;
+
+      --  Set the preprocessing flags according to the preprocessing data
+
+      if Current_Data.Comments and then not Current_Data.Always_Blank then
+         Comment_Deleted_Lines := True;
+         Blank_Deleted_Lines   := False;
+
+      else
+         Comment_Deleted_Lines := False;
+         Blank_Deleted_Lines   := True;
+      end if;
+
+      Undefined_Symbols_Are_False := Current_Data.Undef_False;
+      List_Preprocessing_Symbols  := Current_Data.List_Symbols;
+
+      --  If not already done it, process the definition file
+
+      if Current_Data.Processed then
+
+         --  Set Prep.Mapping
+
+         Prep.Mapping := Current_Data.Mapping;
+
+      else
+         --  First put the mapping in Prep.Mapping, because Prep.Parse_Def_File
+         --  works on Prep.Mapping.
+
+         Prep.Mapping := Current_Data.Mapping;
+
+         String_To_Name_Buffer (Current_Data.Deffile);
+
+         declare
+            N           : constant File_Name_Type    := Name_Find;
+            Deffile     : constant Source_File_Index :=
+                            Load_Definition_File (N);
+            Add_Deffile : Boolean                    := True;
+            T           : constant Nat               := Total_Errors_Detected;
+
+         begin
+            if Deffile = No_Source_File then
+               Fail ("definition file """
+                     & Get_Name_String (N)
+                     & """ not found");
+            end if;
+
+            --  Initialize the preprocessor and set the characteristics of the
+            --  scanner for a definition file.
+
+            Prep.Setup_Hooks
+              (Error_Msg         => Errout.Error_Msg'Access,
+               Scan              => Scn.Scanner.Scan'Access,
+               Set_Ignore_Errors => Errout.Set_Ignore_Errors'Access,
+               Put_Char          => null,
+               New_EOL           => null);
+
+            Scn.Scanner.Set_End_Of_Line_As_Token (True);
+            Scn.Scanner.Reset_Special_Characters;
+
+            --  Initialize the scanner and process the definition file
+
+            Scn.Scanner.Initialize_Scanner (Deffile);
+            Prep.Parse_Def_File;
+
+            --  Reset the behaviour of the scanner to the default
+
+            Scn.Scanner.Set_End_Of_Line_As_Token (False);
+
+            --  Fail if errors were found while processing the definition file
+
+            if T /= Total_Errors_Detected then
+               Errout.Finalize (Last_Call => True);
+               Errout.Output_Messages;
+               Fail ("errors found in definition file """
+                     & Get_Name_String (N)
+                     & """");
+            end if;
+
+            for Index in 1 .. Dependencies.Last loop
+               if Dependencies.Table (Index) = Deffile then
+                  Add_Deffile := False;
+                  exit;
+               end if;
+            end loop;
+
+            if Add_Deffile then
+               Dependencies.Increment_Last;
+               Dependencies.Table (Dependencies.Last) := Deffile;
+            end if;
+         end;
+
+         --  Get back the mapping, indicate that the definition file is
+         --  processed and store back the preprocessing data.
+
+         Current_Data.Mapping := Prep.Mapping;
+         Current_Data.Processed := True;
+
+         if Default then
+            Default_Data := Current_Data;
+
+         else
+            Preproc_Data_Table.Table (Index) := Current_Data;
+         end if;
+      end if;
+
+      Preprocessing_Needed := True;
+   end Prepare_To_Preprocess;
+
+   ---------------------------------------------
+   -- Process_Command_Line_Symbol_Definitions --
+   ---------------------------------------------
+
+   procedure Process_Command_Line_Symbol_Definitions is
+      Symbol_Data : Prep.Symbol_Data;
+      Found : Boolean := False;
+
+   begin
+      Symbol_Table.Init (Command_Line_Symbols);
+
+      --  The command line definitions have been stored temporarily in
+      --  array Symbol_Definitions.
+
+      for Index in 1 .. Last_Definition loop
+         --  Check each symbol definition, fail immediately if syntax is not
+         --  correct.
+
+         Check_Command_Line_Symbol_Definition
+           (Definition => Symbol_Definitions (Index).all,
+            Data       => Symbol_Data);
+         Found := False;
+
+         --  If there is already a definition for this symbol, replace the old
+         --  definition by this one.
+
+         for J in 1 .. Symbol_Table.Last (Command_Line_Symbols) loop
+            if Command_Line_Symbols.Table (J).Symbol = Symbol_Data.Symbol then
+               Command_Line_Symbols.Table (J) := Symbol_Data;
+               Found := True;
+               exit;
+            end if;
+         end loop;
+
+         --  Otherwise, create a new entry in the table
+
+         if not Found then
+            Symbol_Table.Increment_Last (Command_Line_Symbols);
+            Command_Line_Symbols.Table
+              (Symbol_Table.Last (Command_Line_Symbols)) := Symbol_Data;
+         end if;
+      end loop;
+   end Process_Command_Line_Symbol_Definitions;
+
+   -------------------------
+   -- Skip_To_End_Of_Line --
+   -------------------------
+
+   procedure Skip_To_End_Of_Line is
+   begin
+      Set_Ignore_Errors (To => True);
+
+      while Token /= Tok_End_Of_Line and then Token /= Tok_EOF loop
+         Scan;
+      end loop;
+
+      Set_Ignore_Errors (To => False);
+   end Skip_To_End_Of_Line;
+
+end Prepcomp;