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spartanthewarrior
Senior
Joined: Aug 15, 2009
Posts: 32
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 Posted: Sun Mar 11, 2012 7:04 am Post subject: Question: Virtual Interface Defined In Constructor |
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Hi All,
I have (Class A)
class a;
function new(virtual mem_interface.MEM mem_intf_new,
virtual input_interface.IP input_intf_new,
virtual output_interface.OP output_intf_new[4] );
this.mem_intf = mem_intf_new;
this.input_intf = input_intf_new;
this.output_intf = output_intf_new;
endfunction
endclass //-- End Of Class A
class b extend a;
function new();
super.new();
endfunction
endclass
Question: How to pass arguments in (super.new) function when we have virtual interface |
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Logger
Senior
Joined: Jun 15, 2004
Posts: 340
Location: MN
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| Posted: Mon Mar 12, 2012 12:10 am Post subject: |
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If you are simply looking to pass values through, you'd do this.
| Code: |
class b extend a;
function new(virtual mem_interface.MEM mem_intf_new,
virtual input_interface.IP input_intf_new,
virtual output_interface.OP output_intf_new[4] );
super.new( mem_intf_new, input_intf_new, output_intf_new );
endfunction
endclass
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But don't get carried away with putting parameters in your constructors. I'd recommend not putting parameters in constructors unless you know what you're doing. It makes it extremely painful to refactor your code to use a factory pattern later on. UVM uses a factory pattern to good effect. If you don't use UVM, you can make your own factory, but constructor parameters become problematic.
If you're just learning the language with throw away code, this isn't a big deal. On the other hand, if you're writing code that is going to have a long life span, you'll thank yourself later. Now, how to accomplish the above without passing it in via the constructor, well that's a whole 'nother question.
-Ryan |
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spartanthewarrior
Senior
Joined: Aug 15, 2009
Posts: 32
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| Posted: Tue Mar 13, 2012 4:15 am Post subject: |
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thanks much !!
it worked. |
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