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

//   Copyright 2014-2015 SyoSil ApS

//   All Rights Reserved Worldwide

//

//   Licensed under the Apache License, Version 2.0 (the

//   "License"); you may not use this file except in

//   compliance with the License.  You may obtain a copy of

//   the License at

//

//       http://www.apache.org/licenses/LICENSE-2.0

//

//   Unless required by applicable law or agreed to in

//   writing, software distributed under the License is

//   distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR

//   CONDITIONS OF ANY KIND, either express or implied.  See

//   the License for the specific language governing

//   permissions and limitations under the License.

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

/// Generic subscriber for the scoreboard. It provides the write method

/// for UVM monitors and utilizes the function based API of the scoreboard to insert

/// the items received through the write method.

class cl_syoscb_subscriber extends uvm_subscriber#(uvm_sequence_item);

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

  // Non randomizable variables

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

  local string queue_name;

  local string producer;

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

  // UVM Macros

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

  `uvm_component_utils_begin(cl_syoscb_subscriber)

    `uvm_field_string(queue_name, UVM_DEFAULT);

    `uvm_field_string(producer,   UVM_DEFAULT);

  `uvm_component_utils_end

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

  // Constructor

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

  extern function new(string name = "cl_syoscb_subscriber", uvm_component parent = null);

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

  // UVM overwrites/extensions

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

  extern function void write(uvm_sequence_item t);

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

  // Subscriber API

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

  extern function string get_queue_name();

  extern function void set_queue_name(string qn);

  extern function string get_producer();

  extern function void set_producer(string p);

endclass: cl_syoscb_subscriber

function cl_syoscb_subscriber::new(string name = "cl_syoscb_subscriber", uvm_component parent = null);

  super.new(name, parent);

endfunction: new

/// The write method which must be implemented when extending uvm_subscriber.

function void cl_syoscb_subscriber::write(uvm_sequence_item t);

  cl_syoscb parent;

  // Get the parent which is the SCB top

  // This is needed for access to the function based API

  begin

    uvm_component tmp_parent;

    tmp_parent = this.get_parent();

    if(!$cast(parent, tmp_parent)) begin

      // *NOTE*: Here the parent cannot be cast. Thus, the print cannot contain the SCB name

      `uvm_fatal("IMPL_ERROR", "Unable to cast parent of subscriber");

    end

  end

  `uvm_info("DEBUG", $sformatf("Trigger add_item by subscriber: %s (Queue: %s, Producer: %s)", this.get_name(), this.queue_name, this.producer), UVM_FULL);

  // Add the item to the queue

  parent.add_item(this.queue_name, this.producer, t);

endfunction

/// Subscriber API: Returns the name of the queue which this subscriber is connected to.

function string cl_syoscb_subscriber::get_queue_name();

  return(this.queue_name);

endfunction: get_queue_name

/// Subscriber API: Sets the name of the queue which this subscriber is connected to.

function void cl_syoscb_subscriber::set_queue_name(string qn);

  this.queue_name = qn;

endfunction: set_queue_name

/// Subscriber API: Returns the name of the produer which this subscriber is connected to.

function string cl_syoscb_subscriber::get_producer();

  return(this.producer);

endfunction: get_producer

/// Subscriber API: Sets the name of the producer which this subscriber is connected to.

function void cl_syoscb_subscriber::set_producer(string p);

  this.producer = p;

endfunction: set_producer