ocarina-instances-real_finder.adb 8.62 KB
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------------------------------------------------------------------------------
--                                                                          --
--                           OCARINA COMPONENTS                             --
--                                                                          --
--        O C A R I N A . I N S T A N C E S . R E A L _ F I N D E R         --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
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--          Copyright (C) 2009-2011, European Space Agency (ESA).           --
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--                                                                          --
-- 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.ME_AADL.AADL_Instances.Nodes;
with Ocarina.ME_AADL.AADL_Tree.Nodes;
with Ocarina.ME_AADL.AADL_Instances.Entities.Properties;
with Ocarina.Instances.Queries;
use Ocarina.Instances.Queries;
with Ocarina.ME_REAL.REAL_Tree.Nodes;
with Ocarina.ME_REAL.REAL_Tree.Nutils;
with Ocarina.REAL_Values;
with Ocarina.AADL_Values;
with Locations;
with Ocarina.ME_AADL.AADL_Instances.Entities;

package body Ocarina.Instances.REAL_Finder is
   use Ocarina.ME_REAL.REAL_Tree.Nodes;
   use Ocarina.ME_REAL.REAL_Tree.Nutils;
   use Ocarina.ME_AADL.AADL_Instances.Nodes;
   use Ocarina.REAL_Values;

   package RNU renames Ocarina.ME_REAL.REAL_Tree.Nutils;
   package AIEP renames Ocarina.ME_AADL.AADL_Instances.Entities.Properties;
   package RV renames Ocarina.REAL_Values;

   ------------------------
   -- Get_Property_Value --
   ------------------------

   function Get_Property_Value
     (Property_Name : Name_Id;
      Node          : Node_Id) return Value_Id
   is
      V : Value_Id;
   begin
      V := RV.New_String_Value (Property_Name);
      return Get_Property_Value_Function (V, RT_Unknown, Node);
   end Get_Property_Value;

   ---------------------------------
   -- Get_Property_Value_Function --
   ---------------------------------

   function Get_Property_Value_Function
     (Property : Value_Id;
      T        : Return_Type;
      Var      : Node_Id)
     return Value_Id
   is
      use Locations;

      package ATN renames Ocarina.ME_AADL.AADL_Tree.Nodes;
      package AIN renames Ocarina.ME_AADL.AADL_Instances.Nodes;
      package OV renames Ocarina.AADL_Values;
      use OV;

      pragma Assert (AIN.Kind (Var) = AIN.K_Component_Instance or else
                     AIN.Kind (Var) = AIN.K_Call_Instance);

      VT2           : constant RV.Value_Type := RV.Get_Value_Type (Property);
      Property_Name : constant Name_Id := To_Lower (VT2.SVal);
      VT            : OV.Value_Type;
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      Result        : Value_Id := Real_Values.No_Value;
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      N             : Node_Id;
      Is_List       : Boolean := False;
      Resolved_Var  : Node_Id;
      Val           : Node_Id;
      Result_List   : constant List_Id := RNU.New_List
        (K_List_Id, No_Location);
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   begin
      if AIN.Kind (Var) = AIN.K_Call_Instance then
         Resolved_Var := AIN.Corresponding_Instance (Var);
      else
         Resolved_Var := Var;
      end if;

      --  XXX Expanded_Multi_Value seems bugged. Fix it, and use
      --  Get_Value_Of_Property_Association instead

      N := AIEP.Find_Property_Association_From_Name
        (Property_List => AIN.Properties (Resolved_Var),
         Property_Name => Property_Name);
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      if Present (N) then
         N := AIN.Property_Association_Value (N);
         if ATN.Expanded_Single_Value (N) /= No_Node then
            N := ATN.Expanded_Single_Value (N);
         elsif ATN.Single_Value (N) /= No_Node then
            N := ATN.Single_Value (N);
         elsif ATN.Multi_Value (N) /= No_List then
            N := ATN.First_Node (ATN.Multi_Value (N));
            Is_List := True;
         else
            N := No_Node;
         end if;
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      else
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         --  In the specific case of lists, we always returns an empty list
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         case T is
            when RT_String_List
              | RT_Float_List
              | RT_Int_List
              | RT_Bool_List
              | RT_Range_List
              | RT_Element_List =>
               Result := RV.New_List_Value (Result_List);
               return Result;

            when others =>
               Result := RV.No_Value;
         end case;
      end if;

      while Present (N) loop
         if not Is_List then
            Is_List := Present (ATN.Next_Node (N));
         end if;

         case ATN.Kind (N) is
            when ATN.K_Signed_AADLNumber =>
               Result := AADL_Value (ATN.Value (ATN.Number_Value (N)));

            when ATN.K_Literal =>
               VT := OV.Get_Value_Type (ATN.Value (N));

               --  Enum are turned into strings

               if VT.T = OV.LT_Enumeration then
                  Result := RV.New_String_Value (VT.EVal);
               else
                  Result := AADL_Value (ATN.Value (N));
               end if;

            when ATN.K_Number_Range_Term =>
               declare
                  L, R   : Value_Id;
                  LT, RT : RV.Value_Type;
               begin
                  L := AADL_Value (ATN.Value (ATN.Number_Value
                                              (ATN.Lower_Bound (N))));
                  LT := Get_Value_Type (L);
                  R := AADL_Value (ATN.Value (ATN.Number_Value
                                              (ATN.Upper_Bound (N))));
                  RT := Get_Value_Type (R);

                  if LT.T = LT_Integer then
                     Result := New_Range_Value
                       (Long_Long_Float (LT.IVal),
                        Long_Long_Float (RT.IVal),
                        LT.ISign, RT.ISign,
                        RT.IBase, RT.IExp);
                  else
                     Result := New_Range_Value
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                       (LT.RVal,
                        RT.RVal,
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                        LT.RSign, RT.RSign,
                        RT.RBase, RT.RExp);
                  end if;
               end;

            when ATN.K_Enumeration_Term =>
               Result := RV.New_String_Value
                 (ATN.Name (ATN.Identifier (N)));

            when ATN.K_Reference_Term =>
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               Result := RV.New_Elem_Value
                 (Get_Reference_Property
                    (Resolved_Var, Property_Name));

            when ATN.K_Component_Classifier_Term =>
               Result := RV.New_Elem_Value
                 (Get_Classifier_Property
                    (Resolved_Var, Property_Name));
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            when others =>
               return RV.No_Value;
         end case;

         if Is_List then
            Val := New_Node (K_Value_Node, No_Location);
            Set_Item_Val (Val, Result);
            RNU.Append_Node_To_List (Val, Result_List);
         end if;

         N := ATN.Next_Node (N);
      end loop;

      if Is_List then
         Result := RV.New_List_Value (Result_List);
      end if;

      return Result;
   end Get_Property_Value_Function;

end Ocarina.Instances.REAL_Finder;