i-fortra.adb   [plain text]


------------------------------------------------------------------------------
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------------------------------------------------------------------------------

package body Interfaces.Fortran is

   ------------
   -- To_Ada --
   ------------

   --  Single character case

   function To_Ada (Item : Character_Set) return Character is
   begin
      return Character (Item);
   end To_Ada;

   --  String case (function returning converted result)

   function To_Ada (Item : Fortran_Character) return String is
      T : String (1 .. Item'Length);

   begin
      for J in T'Range loop
         T (J) := Character (Item (J - 1 + Item'First));
      end loop;

      return T;
   end To_Ada;

   --  String case (procedure copying converted string to given buffer)

   procedure To_Ada
     (Item   : Fortran_Character;
      Target : out String;
      Last   : out Natural)
   is
   begin
      if Item'Length = 0 then
         Last := 0;
         return;

      elsif Target'Length = 0 then
         raise Constraint_Error;

      else
         Last := Target'First - 1;

         for J in Item'Range loop
            Last := Last + 1;

            if Last > Target'Last then
               raise Constraint_Error;
            else
               Target (Last) := Character (Item (J));
            end if;
         end loop;
      end if;
   end To_Ada;

   ----------------
   -- To_Fortran --
   ----------------

   --  Character case

   function To_Fortran (Item : Character) return Character_Set is
   begin
      return Character_Set (Item);
   end To_Fortran;

   --  String case (function returning converted result)

   function To_Fortran (Item : String) return Fortran_Character is
      T : Fortran_Character (1 .. Item'Length);

   begin
      for J in T'Range loop
         T (J) := Character_Set (Item (J - 1 + Item'First));
      end loop;

      return T;
   end To_Fortran;

   --  String case (procedure copying converted string to given buffer)

   procedure To_Fortran
     (Item   : String;
      Target : out Fortran_Character;
      Last   : out Natural)
   is
   begin
      if Item'Length = 0 then
         Last := 0;
         return;

      elsif Target'Length = 0 then
         raise Constraint_Error;

      else
         Last := Target'First - 1;

         for J in Item'Range loop
            Last := Last + 1;

            if Last > Target'Last then
               raise Constraint_Error;
            else
               Target (Last) := Character_Set (Item (J));
            end if;
         end loop;
      end if;
   end To_Fortran;

end Interfaces.Fortran;