gistfile1.py

class _UserVerilogInstance(_UserVerilogCode):                                                                                                                                                                      
                                                                                                                                                                                                                   
    def __str__(self):                                                                                                                                                                                             
        args = inspect.getargspec(self.func)[0]                                                                                                                                                                    
                                                                                                                                                                                                                   
        is_signal = lambda arg: arg in self.namespace and isinstance(self.namespace[arg], _Signal)                                                                                                                 
        is_param = lambda arg: arg in self.namespace and not isinstance(self.namespace[arg], _Signal) and self.namespace[arg] is not None                                                                          
        params = ', '.join([".%s(%s)" % (a,self.namespace[a]) for a in args if is_param(a)])                                                                                                                       
        signals = ','.join(["\n\t.%s(%s)" % (a,self.namespace[a]._name) for a in args if is_signal(a)])                                                                                                            
                                                                                                                                                                                                                   
        s = "%s #(%s) %s(%s\n);" % (self.funcname, params,                                                                                                                                                         
                                    self.code if isinstance(self.code, str) else self.block.name,                                                                                                                  
                                    signals);                                                                                                                                                                      
        return s