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[/] [uart2bus_testbench/] [trunk/] [tb/] [uvm_src/] [comps/] [uvm_pair.svh] - Rev 16

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//
//-----------------------------------------------------------------------------
//   Copyright 2007-2011 Mentor Graphics Corporation
//   Copyright 2007-2011 Cadence Design Systems, Inc. 
//   Copyright 2010-2011 Synopsys, Inc.
//   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.
//-----------------------------------------------------------------------------

//-----------------------------------------------------------------------------
// Title: uvm_pair classes
//-----------------------------------------------------------------------------
// This section defines container classes for handling value pairs.
//-----------------------------------------------------------------------------


//-----------------------------------------------------------------------------
// Class: uvm_class_pair #(T1,T2)
//
// Container holding handles to two objects whose types are specified by the
// type parameters, T1 and T2.
//-----------------------------------------------------------------------------

class uvm_class_pair #(type T1=int, T2=T1) extends uvm_object;

  typedef uvm_class_pair #(T1, T2 ) this_type;

  `uvm_object_param_utils(this_type)
  
  const static string type_name = "uvm_class_pair #(T1,T2)";

// Variable: T1 first
//
// The handle to the first object in the pair

  T1 first;

// Variable: T2 second
//
// The handle to the second object in the pair

  T2 second;

  // Function: new
  //
  // Creates an instance that holds a handle to two objects.
  // The optional name argument gives a name to the new pair object.

  function new (string name="", T1 f=null, T2 s=null);

    super.new(name);

    if (f == null)
      first = new;
    else
      first = f;

    if (s == null)
      second = new;
    else
      second = s;

  endfunction  
  
  virtual function string get_type_name ();
    return type_name;
  endfunction

  virtual function string convert2string;
    string s;
    $sformat(s, "pair : %s, %s",
             first.convert2string(), second.convert2string());
    return s;    
  endfunction

  virtual function bit do_compare(uvm_object rhs, uvm_comparer comparer);
    this_type rhs_;
    if(!$cast(rhs_,rhs)) begin
      `uvm_error("WRONG_TYPE", {"do_compare: rhs argument is not of type '",get_type_name(),"'"})
      return 0;
    end
    return first.compare(rhs_.first) && second.compare(rhs_.second);
  endfunction

  virtual function void do_copy (uvm_object rhs);
    this_type rhs_;
    if(!$cast(rhs_,rhs))
      `uvm_fatal("WRONG_TYPE", {"do_copy: rhs argument is not of type '",get_type_name(),"'"})
    first.copy(rhs_.first);
    second.copy(rhs_.second);
  endfunction

endclass

//-----------------------------------------------------------------------------
// CLASS: uvm_built_in_pair #(T1,T2)
//
// Container holding two variables of built-in types (int, string, etc.). The
// types are specified by the type parameters, T1 and T2.
//-----------------------------------------------------------------------------

class uvm_built_in_pair #(type T1=int, T2=T1) extends uvm_object;

  typedef uvm_built_in_pair #(T1,T2) this_type;

  `uvm_object_param_utils(this_type)
  
  const static string type_name = "uvm_built_in_pair #(T1,T2)";

// Variable: T1 first
//
// The first value in the pair

  T1 first;

// Variable: T2 second
//
// The second value in the pair

  T2 second;
  
  // Function: new
  //
  // Creates an instance that holds two built-in type values.
  // The optional name argument gives a name to the new pair object.

  function new (string name="");
    super.new(name);
  endfunction  
  
  virtual function string get_type_name ();
    return type_name;
  endfunction

  virtual function string convert2string;
    return $sformatf("built-in pair : %p, %p", first, second);
  endfunction

  virtual function bit do_compare(uvm_object rhs, uvm_comparer comparer);
    this_type rhs_;
    if(!$cast(rhs_,rhs)) begin
      `uvm_error("WRONG_TYPE", {"do_compare: rhs argument is not of type '",get_type_name(),"'"})
      return 0;
    end
    return first == rhs_.first && second == rhs_.second;
  endfunction

  function void do_copy (uvm_object rhs);
    this_type rhs_;
    if(!$cast(rhs_,rhs))
      `uvm_fatal("WRONG_TYPE", {"do_copy: rhs argument is not of type '",get_type_name(),"'"})
    first = rhs_.first;
    second = rhs_.second;
  endfunction
  
endclass

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