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--                                                                          --

--                         GNAT COMPILER COMPONENTS                         --

--                                                                          --

--                             S W I T C H - M                              --

--                                                                          --

--                                 S p e c                                  --

--                                                                          --

--          Copyright (C) 2001-2009, 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 scans make switches. Note that the body of Usage must be

--  coordinated with the switches that are recognized by this package.

--  The Usage package also acts as the official documentation for the

--  switches that are recognized. In addition, package Debug documents

--  the otherwise undocumented debug switches that are also recognized.

with System.OS_Lib; use System.OS_Lib;

with Prj.Tree;

package Switch.M is

   procedure Scan_Make_Switches

     (Project_Node_Tree : Prj.Tree.Project_Node_Tree_Ref;

      Switch_Chars      : String;

      Success           : out Boolean);

   --  Scan a gnatmake switch and act accordingly. For switches that are

   --  recognized, Success is set to True. A switch that is not recognized and

   --  consists of one small letter causes a fatal error exit and control does

   --  not return. For all other not recognized switches, Success is set to

   --  False, so that the switch may be passed to the compiler.

   --

   --  Project_Node_Tree is used to store tree-specific parameters like the

   --  project path.

   procedure Normalize_Compiler_Switches

     (Switch_Chars : String;

      Switches     : in out Argument_List_Access;

      Last         : out Natural);

   --  Takes a compiler switch which potentially is equivalent to more

   --  that one simple switches and returns the equivalent list of simple

   --  switches that are stored in an ALI file. Switches will be extended

   --  if initially null or too short. Last indicates the index in Switches

   --  of the last simple switch. Last is equal to zero, if it has been

   --  determined that Switch_Chars is ill-formed or does not contain any

   --  switch that should be stored in an ALI file. Otherwise, the list of

   --  simple switches is Switches (Switches'First .. Last).

   --

   --    Example: if Switch_Chars is equal to "-gnatAwue", then the list of

   --    simple switches will have 3 components: -gnatA, -gnatwu, -gnatwe.

   --

   --  The String_Access components of Switches should not be deallocated:

   --  they are shallow copies of components in a table in the body.

   function Normalize_Compiler_Switches

     (Switch_Chars : String) return Argument_List;

   --  Similar to the previous procedure. The return value is the list of

   --  simple switches. It may be an empty array if it has been determined

   --  that Switch_Chars is ill-formed or does not contain any switch that

   --  should be stored in an ALI file. The String_Access components of the

   --  returned value should not be deallocated.

end Switch.M;