------------------------------------------------------------------------------
--                                                                          --
--                         GNAT COMPILER COMPONENTS                         --
--                                                                          --
--                             S W I T C H - C                              --
--                                                                          --
--                                 S p e c                                  --
--                                                                          --
--          Copyright (C) 2001-2021, 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.      --
--                                                                          --
------------------------------------------------------------------------------

--  This package scans front end switches. Note that the body of Usage must be
--  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.Strings; use System.Strings;

package Switch.C is

   procedure Scan_Front_End_Switches
     (Switch_Chars : String;
      Args         : String_List;
      Arg_Rank     : Positive);
   --  Procedures to scan out front end switches stored in the given string.
   --  The first character is known to be a valid switch character, and there
   --  are no blanks or other switch terminator characters in the string, so
   --  the entire string should consist of valid switch characters, except that
   --  an optional terminating NUL character is allowed. A bad switch causes
   --  a fatal error exit and control does not return. The call also sets
   --  Usage_Requested to True if a switch -gnath is encountered.
   --
   --  Args is the full list of command line arguments. Arg_Rank is the
   --  position of the switch in Args. It is used for certain switches -gnatx
   --  to check if a subsequent switch -gnat-x cancels the switch -gnatx.

end Switch.C;