------------------------------------------------------------------------------
--                                                                          --
--                         GNAT COMPILER COMPONENTS                         --
--                                                                          --
--                              P R J . P A R T                             --
--                                                                          --
--                                 S p e c                                  --
--                                                                          --
--          Copyright (C) 2000-2007, 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 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,  51  Franklin  Street,  Fifth  Floor, --
-- Boston, MA 02110-1301, USA.                                              --
--                                                                          --
-- GNAT was originally developed  by the GNAT team at  New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc.      --
--                                                                          --
------------------------------------------------------------------------------

--  Implements the parsing of project files into a tree

with Prj.Tree;  use Prj.Tree;

package Prj.Part is

   procedure Parse
     (In_Tree                : Project_Node_Tree_Ref;
      Project                : out Project_Node_Id;
      Project_File_Name      : String;
      Always_Errout_Finalize : Boolean;
      Packages_To_Check      : String_List_Access := All_Packages;
      Store_Comments         : Boolean := False);
   --  Parse project file and all its imported project files and create a tree.
   --  Return the node for the project (or Empty_Node if parsing failed). If
   --  Always_Errout_Finalize is True, Errout.Finalize is called in all cases,
   --  Otherwise, Errout.Finalize is only called if there are errors (but not
   --  if there are only warnings). Packages_To_Check indicates the packages
   --  where any unknown attribute produces an error. For other packages, an
   --  unknown attribute produces a warning. When Store_Comments is True,
   --  comments are stored in the parse tree.

   type Extension_Origin is (None, Extending_Simple, Extending_All);
   --  Type of parameter From_Extended for procedures Parse_Single_Project and
   --  Post_Parse_Context_Clause. Extending_All means that we are parsing the
   --  tree rooted at an extending all project.

   procedure Parse_Single_Project
     (In_Tree           : Project_Node_Tree_Ref;
      Project           : out Project_Node_Id;
      Extends_All       : out Boolean;
      Path_Name         : String;
      Extended          : Boolean;
      From_Extended     : Extension_Origin;
      In_Limited        : Boolean;
      Packages_To_Check : String_List_Access;
      Depth             : Natural);
   --  Parse a project file.
   --  Recursive procedure: it calls itself for imported and extended
   --  projects. When From_Extended is not None, if the project has already
   --  been parsed and is an extended project A, return the ultimate
   --  (not extended) project that extends A. When In_Limited is True,
   --  the importing path includes at least one "limited with".
   --  When parsing configuration projects, do not allow a depth > 1.

end Prj.Part;