Class uvm_visitor

• uvm_pkg :: uvm_void

  • uvm_pkg :: uvm_object

    • uvm_pkg :: uvm_visitor

Inheritance Diagram of uvm_visitor

CLASS

uvm_visitor #(NODE)

The uvm_visitor class provides an abstract base class for a visitor. The visitor visits instances of type NODE. For general information regarding the visitor pattern see http://en.wikipedia.org/wiki/Visitor_pattern

Parameters

Name	Default value	Description
NODE	uvm_component

Constructors

function new ( string name )

Functions

virtual function void begin_v ( )

This method will be invoked by the visitor before the first NODE is visited

virtual function void end_v ( )

This method will be invoked by the visitor after the last NODE is visited

virtual function void visit ( uvm_component node )

This method will be invoked by the visitor for every visited node of the provided structure. The user is expected to provide the own functionality in this function.

class count_nodes_visitor#(type T=uvm_component) extends uvm_visitor#(T);
    function new (string name = "");
          super.new(name);
    endfunction
    local int cnt;
    virtual function void begin_v(); cnt = 0; endfunction
    virtual function void end_v(); uvm_info("TEXT",$sformatf("%d elements",cnt),UVM_NONE) endfunction
    virtual function void visit(T node); cnt++; endfunction
   endclass

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