--  Nodes recognizer for ieee packages - utilities.
--  Copyright (C) 2016 Tristan Gingold
--
--  GHDL is free software; you can redistribute it and/or modify it under
--  the terms of the GNU General Public License as published by the Free
--  Software Foundation; either version 2, or (at your option) any later
--  version.
--
--  GHDL is distributed in the hope that it will be useful, but WITHOUT 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
--  along with GHDL; see the file COPYING.  If not, write to the Free
--  Software Foundation, 59 Temple Place - Suite 330, Boston, MA
--  02111-1307, USA.

with Vhdl.Utils; use Vhdl.Utils;
with Vhdl.Std_Package;

package body Vhdl.Ieee is
   function Skip_Copyright_Notice (Decl : Iir) return Iir is
   begin
      if Decl /= Null_Iir
        and then Get_Kind (Decl) = Iir_Kind_Constant_Declaration
        and then (Get_Base_Type (Get_Type (Decl))
                    = Vhdl.Std_Package.String_Type_Definition)
      then
         return Get_Chain (Decl);
      else
         return Decl;
      end if;
   end Skip_Copyright_Notice;

   function Skip_Implicit (Decl : Iir) return Iir
   is
      Res : Iir;
   begin
      Res := Decl;
      loop
         exit when Res = Null_Iir;
         exit when not (Get_Kind (Res) = Iir_Kind_Function_Declaration
                          and then Is_Implicit_Subprogram (Res));
         Res := Get_Chain (Res);
      end loop;
      return Res;
   end Skip_Implicit;
end Vhdl.Ieee;