func init
	// adds using namespace
	sys.add_use('System.Numerics')

	// initialize instance
	if(linked("Result") and linked("doOperation"))
		sys.add_var(this.name, 'dynamic')
	end
end

func doOperation(data)
	if(linked("Result"))
		blk.println(this.codename, ' = ', this.make_result(data), ';')
		event("onResult", this.codename)
	else
		event("onResult", this.make_result(data))
	end
end

func make_result(data)
	op = this.props("OpType").value
	if(op == '-1')
		return('(-' + d("C1") + ')')
	elseif((op == '==') or (op == '!='))
		return(sub('(' + d("C1") + ' ' + op + ' ' + d("C2") + ')', 104))
	end

	return('(' + d("C1") + ' ' + op + ' ' + d("C2") + ')')
end

func Result
	if(linked("doOperation"))
		return(this.codename)
	else
		return(make_result())
	end
end