007 Class（類）

類（Class）

• Object：類例項後的物件
• Object members：成員
• Constructors：建構函式
• Static class members：靜態類成員
• Assignments：賦值
• Inheritance and subclasses：繼承和子類
• this and super：指標
• Data hiding and encapsulation
• Constant class properties：常量類屬性
• Abstract classes and virtual methods：抽象類和虛擬方法
• Class scope resolution operator：類範圍解析運算子
• Parameterized classes：引數化類

program class_t;
  class packet;
     // members in class
     integer size;
     integer payload [];
     integer i;
     // Constructor
     function new (integer size);
       begin
         this.size = size;
         payload = new[size];
         for (i=0; i < this.size; i ++) begin
           payload[i] = $random;
         end 
       end 
     endfunction
     // Task in class (object method)
     task print ();
       begin
         $write("Payload : ");
         for (i=0; i < size; i ++) begin
           $write("%x ",payload[i]);
         end
         $write("\n");
       end 
     endtask
     // Function in class (object method)
     function integer get_size();
       begin
         get_size = this.size;
       end
     endfunction
   endclass

   packet pkt;

   initial begin
     pkt = new(5);
     pkt.print();
     $display ("Size of packet %0d",pkt.get_size());
   end

endprogram

其實類似C++，具體的後續再補充