Encapsulation

SV Verification Directory

Encapsulation

Encapsulation is a technique used to restrict access to the data and methods within a class, ensuring that internal class details are not accessible from outside the class.

Access Specifiers

These define the visibility of class members and they are as follows:

Local

Members declared as local are accessible only within the class itself.

• Syntax

  class ex;
     local int a;
  
     function new();
        // execute code
     endfunction
  
  endclass
  

Protected

Members declared as protected are accessible within the class and its derived classes.

• Syntax

  class ex;
     protected int a;
  
     function new();
        // execute code
     endfunction
  
  endclass
  

Public

Members declared as public are accessible from anywhere.

• Syntax

  class ex;
     public int a;
  
     function new();
        // execute code
     endfunction
  
  endclass
  

Note: By default, all properties and methods of a class in SystemVerilog are public and can be accessed from anywhere using the object handle.