参数数量/类型传递给用swig包裹的重载c ++构造函数的问题

Question

我正在尝试包装其他人用swig编写的C ++类（我们称其为“垃圾邮件”），以将其公开给Python。解决了几个问题后，我能够在python中导入模块，但是当我尝试创建此类的对象时，出现以下错误：

 foo = Spam.Spam('abc',3)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "Spam.py", line 96, in __init__
    this = _Spam.new_Spam(*args)
NotImplementedError: Wrong number of arguments for overloaded function 'new_Spam'.
  Possible C/C++ prototypes are:
    Spam(unsigned char *,unsigned long,bool,unsigned int,SSTree::io_action,char const *)
    Spam(unsigned char *,unsigned long,bool,unsigned int,SSTree::io_action)
    Spam(unsigned char *,unsigned long,bool,unsigned int)
    Spam(unsigned char *,unsigned long,bool)
    Spam(unsigned char *,unsigned long)

[Google搜索，我意识到该错误可能是由参数的类型而不是数字引起的（这很令人困惑），但是我仍然无法确定。我怀疑问题出在传递字符串作为第一个参数，但不知道如何解决它（请记住，我几乎不了解c / c ++）。

Answer 1

SWIG将字符串视为'char *'。您对'unsigned char *'的使用极有可能使您感到困惑。您可以将签名更改为'char *'或提供一个typemap：

%typemap(in) unsigned char * = char*

Answer 2

尝试使用：

%typemap(in) (unsigned char *) = (char *);

Answer 3

这可以通过修改第100到110行来解决

self.source = uhd_receiver(options.args, symbol_rate,
                           options.samples_per_symbol,
                           options.rx_freq, 
                           options.rx_gain, options.spec, options.antenna,
                           options.verbose)

self.sink = uhd_transmitter(options.args, symbol_rate,
                            options.samples_per_symbol,
                            options.tx_freq, 
                            options.tx_gain, options.spec, options.antenna,
                            options.verbose)

至以下

self.source = uhd_receiver(options.args, symbol_rate,
                           options.samples_per_symbol, 
                           options.rx_freq, 
              ---------->  options.lo_offset,
                           options.rx_gain, options.spec, options.antenna,
              ---------->  options.clock_source,
                           options.verbose)

self.sink = uhd_transmitter(options.args, symbol_rate,
                            options.samples_per_symbol, 
                            options.tx_freq,
              ---------->   options.lo_offset, 
                            options.tx_gain, options.spec, options.antenna,
              ---------->   options.clock_source, 
                            options.verbose)

祝你好运