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--                                                                          --

--                         GNAT COMPILER COMPONENTS                         --

--                                                                          --

--                             P R E P C O M P                              --

--                                                                          --

--                                 S p e c                                  --

--                                                                          --

--          Copyright (C) 2002-2007, 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.      --

--                                                                          --

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--  This package stores all preprocessing data for the compiler

with Namet; use Namet;

package Prepcomp is

   procedure Add_Dependencies;

   --  Add dependencies on the preprocessing data file and the

   --  preprocessing definition files, if any.

   procedure Add_Symbol_Definition (Def : String);

   --  Add a symbol definition from the command line.

   --  Fail if definition is illegal.

   procedure Check_Symbols;

   --  Check if there are preprocessing symbols on the command line and

   --  set preprocessing if there are some: all files are preprocessed with

   --  these symbols. This procedure should not be called if there is a

   --  preprocessing data file specified on the command line. Procedure

   --  Parse_Preprocessing_Data_File should be called instead.

   procedure Parse_Preprocessing_Data_File (N : File_Name_Type);

   --  Parse a preprocessing data file, specified with a -gnatep= switch

   procedure Prepare_To_Preprocess

     (Source               : File_Name_Type;

      Preprocessing_Needed : out Boolean);

   --  Prepare, if necessary, the preprocessor for a source file.

   --  If the source file needs to be preprocessed, Preprocessing_Needed

   --  is set to True. Otherwise, Preprocessing_Needed is set to False

   --  and no preprocessing needs to be done.

   procedure Process_Command_Line_Symbol_Definitions;

   --  Check symbol definitions that have been added by calls to procedure

   --  Add_Symbol_Definition and stored as pointers to string, and put them in

   --  a table. The reason the definitions were stored as pointer to strings is

   --  that the name table is not yest initialized when we process the command

   --  line switches. These symbol definitions will be later used in

   --  the call to Prepare_To_Preprocess.

end Prepcomp;