with Ada.IO_Exceptions;      use Ada.IO_Exceptions;
with GNAT.Current_Exception; use GNAT.Current_Exception;
with Unbounded_Strings;      use Unbounded_Strings;
with GNAT.Command_Line;      use GNAT.Command_Line;
with GNAT.OS_Lib;            use GNAT.OS_Lib;
with Text_IO;                use Text_IO;
with Version;                use Version;
with Ada.Strings.Unbounded;  use Ada.Strings.Unbounded;
with Systems;                use Systems;
with Task_Set;               use Task_Set;
with Processor_Set;          use Processor_Set;
with Address_Space_Set;      use Address_Space_Set;
with Resource_Set;           use Resource_Set;
with Buffer_Set;             use Buffer_Set;
with Call_Framework;         use Call_Framework;
with Tasks;                  use Tasks;
with Debug;                  use Debug;
use Task_Set.Generic_Task_Set;

package body applicability_constraint.Period_Smaller_Than_Deadline_Constraint 
is

   function APPLY_QUERY1_Condition (t1 : Generic_Task_Ptr) return Boolean is
   begin

      return (t1.task_type = Periodic_Type);

   end APPLY_QUERY1_Condition;

   function APPLY_QUERY3_Condition (t3 : Generic_Task_Ptr) return Boolean is
   begin

      return (t3.task_type = Periodic_Type);

   end APPLY_QUERY3_Condition;

   function APPLY_QUERY2_Condition (t2 : Generic_Task_Ptr) return Boolean is
      ptr : Periodic_Task_Ptr;
   begin
      ptr := Periodic_Task_Ptr (t2);
      return (t2.task_type = Periodic_Type) and (ptr.period < ptr.deadline);

   end APPLY_QUERY2_Condition;

   function apply (Sys : System) return Boolean is
   begin
      Context := Sys;


      return (Task_Set.Get_Number_Of_Elements
                 (Select_And_Copy
                     (Context.Tasks,
                      APPLY_QUERY1_Condition'Access)) <
              Tasks_Range (2)) or
             (Get_Number_Of_Elements
                 (Select_And_Copy
                     ((Select_And_Copy
                          (Context.Tasks,
                           APPLY_QUERY3_Condition'Access)),
                      APPLY_QUERY2_Condition'Access)) >
              Tasks_Range (0));

   end apply;

end applicability_constraint.Period_Smaller_Than_Deadline_Constraint;