//------------------------------------------------------------------------------

//

// CLASS: uvm_subscriber

//

// This class provides an analysis export for receiving transactions from a

// connected analysis export. Making such a connection "subscribes" this

// component to any transactions emitted by the connected analysis port.

//

// Subtypes of this class must define the write method to process the incoming

// transactions. This class is particularly useful when designing a coverage

// collector that attaches to a monitor.

//------------------------------------------------------------------------------

virtual class uvm_subscriber #(type T=int) extends uvm_component;

  typedef uvm_subscriber #(T) this_type;

  // Port: analysis_export

  //

  // This export provides access to the write method, which derived subscribers

  // must implement.

  uvm_analysis_imp #(T, this_type) analysis_export;

  // Function: new

  //

  // Creates and initializes an instance of this class using the normal

  // constructor arguments for <uvm_component>: ~name~ is the name of the

  // instance, and ~parent~ is the handle to the hierarchical parent, if any.

  function new (string name, uvm_component parent);

    super.new(name, parent);

    analysis_export = new("analysis_imp", this);

  endfunction

  // Function: write

  //

  // A pure virtual method that must be defined in each subclass. Access

  // to this method by outside components should be done via the

  // analysis_export.

  pure virtual function void write(T t);

endclass