Question

我正在尝试将其他人用swig编写的c ++类（让我们称之为“垃圾邮件”）包装起来，以便将它暴露给Python。解决了几个问题之后，我可以在python中导入模块，但是当我尝试创建这样的类的对象时，我得到以下错误：

 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)

谷歌搜索，我意识到错误可能是由参数的类型引起的，而不是由数字引起的（这很令人困惑），但我仍然无法识别。我怀疑问题在于将字符串作为第一个参数传递，但不知道如何修复它（请记住，我几乎不知道c / c ++）。

Answer 1

SWIG将字符串视为'char *'。你使用'unsigned char *'很可能会让人感到困惑。您可以将签名更改为“char *”或提供类型映射：

%typemap(in) unsigned char * = char*

Answer 2

尝试：

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

Answer 3

这可以通过修改第100行到第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)

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

传递给用swig包装的重载c ++构造函数的参数的数量/类型的问题

3 个答案: