------------------------------------------
--------------------------------------
--                                                                          --
--                           OCARINA COMPONENTS                             --
--                                                                          --
--     O C A R I N A . B U I L D E R . C O M P O N E N T S . M O D E S      --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
--               Copyright (C) 2005-2006, GET-Telecom Paris.                --
--                                                                          --
-- Ocarina  is free software;  you  can  redistribute  it and/or  modify    --
-- it under terms of the GNU General Public License as published by the     --
-- Free Software Foundation; either version 2, or (at your option) any      --
-- later version. Ocarina 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 distributed with Ocarina; see file COPYING.   --
-- If not, write to the Free Software Foundation, 51 Franklin Street, Fifth --
-- Floor, Boston, MA 02111-1301, USA.                                       --
--                                                                          --
-- As a special exception,  if other files  instantiate  generics from this --
-- unit, or you link  this unit with other files  to produce an executable, --
-- this  unit  does not  by itself cause  the resulting  executable to be   --
-- covered  by the  GNU  General  Public  License. This exception does not  --
-- however invalidate  any other reasons why the executable file might be   --
-- covered by the GNU Public License.                                       --
--                                                                          --
--                 Ocarina is maintained by the Ocarina team                --
--                       (ocarina-users@listes.enst.fr)                     --
--                                                                          --
------------------------------------------------------------------------------

with Ocarina.Nodes;
with Ocarina.Nutils;

package body Ocarina.Builder.Components.Modes is

   ------------------------------
   -- Add_Property_Association --
   ------------------------------

   function Add_Property_Association
     (Mode                 : Types.node_id;
      Property_Association : Types.node_id) return Boolean
   is
      use Ocarina.Nodes;
      use Ocarina.Nutils;

      pragma assert (Mode /= No_Node and then Kind (Mode) = k_mode);
      pragma assert (Property_Association /= No_Node);
   begin
      if Is_Empty (Ocarina.Nodes.Properties (Mode)) then
         Set_Properties
           (Mode,
            New_List (k_list_id, Loc (Property_Association)));
      end if;

      Append_Node_To_List
        (Property_Association,
         Ocarina.Nodes.Properties (Mode));
      return True;
   end Add_Property_Association;

   ------------------
   -- Add_New_Mode --
   ------------------

   function Add_New_Mode
     (Loc        : Locations.location;
      Identifier : Types.node_id;
      Component  : Types.node_id) return Types.node_id
   is
      use Ocarina.Nodes;
      use Ocarina.Nutils;

      pragma assert
        (Identifier /= No_Node and then Kind (Identifier) = k_identifier);
      pragma assert
        (Component /= No_Node
         and then Kind (Component) = k_component_implementation);

      Node          : node_id;
      Success       : Boolean          := True;
      Property_Scop : constant node_id := New_Node (k_scope_definition, Loc);
   begin
      Node := New_Node (k_mode, Loc);
      Set_Identifier (Node, Identifier);
      Set_Corresponding_Entity (Identifier, Node);

      Set_Property_Scope (Node, Property_Scop);
      Set_Corresponding_Entity (Property_Scope (Node), Node);
      Set_Scoped_Identifiers (Property_Scop, No_Node);

      Success := Add_Mode (Component, Node);

      if Success then
         return Node;
      else
         return No_Node;
      end if;
   end Add_New_Mode;

   -----------------------------
   -- Add_New_Mode_Transition --
   -----------------------------

   function Add_New_Mode_Transition
     (Loc       : Locations.location;
      Component : Types.node_id) return Types.node_id
   is
      use Ocarina.Nodes;
      use Ocarina.Nutils;
      use Ocarina.Builder.Components;

      pragma assert
        (Component /= No_Node
         and then Kind (Component) = k_component_implementation);

      Node    : constant node_id := New_Node (k_mode_transition, Loc);
      Success : Boolean          := True;
   begin
      Success := Add_Mode (Component => Component, Mode => Node);

      if Success then
         return Node;
      else
         return No_Node;
      end if;
   end Add_New_Mode_Transition;

end Ocarina.Builder.Components.Modes;