Question

尝试编译代码时出现不完整的类型错误。我知道它与includes有关，但我的项目很大，它使用了几个模板，所以我找不到哪个类型实际上是不完整的。错误消息也无济于事：

Compiling: ../../../addons/ofxTableGestures/src/Graphics/objects/CursorFeedback.cpp
In file included from ../../../addons/ofxTableGestures/ext/boost/fusion/include/invoke_procedure.hpp:10,
                 from ../../../addons/ofxTableGestures/src/oscGestures/tuioApp.hpp:46,
                 from /home/thechaos/Projectes/of_preRelease_v0061_linux_FAT/addons/../apps/OF-TangibleFramework/ofxTableGestures/src/Graphics/objects/CursorFeedback.hpp:35,
                 from /home/thechaos/Projectes/of_preRelease_v0061_linux_FAT/addons/../apps/OF-TangibleFramework/ofxTableGestures/src/Graphics/objects/CursorFeedback.cpp:31:
../../../addons/ofxTableGestures/ext/boost/fusion/functional/invocation/invoke_procedure.hpp: In function ‘void boost::fusion::invoke_procedure(Function, const Sequence&) [with Function = void (tuio::CanBasicFingers<Graphic>::*)(long int, float, float, float, float, float), Sequence = boost::fusion::joint_view<boost::fusion::joint_view<boost::fusion::iterator_range<boost::fusion::vector_iterator<const boost::fusion::vector6<long int, float, float, float, float, float>, 0>, boost::fusion::vector_iterator<boost::fusion::vector6<long int, float, float, float, float, float>, 0> >, const boost::fusion::single_view<tuio::CanBasicFingers<Graphic>*> >, boost::fusion::iterator_range<boost::fusion::vector_iterator<boost::fusion::vector6<long int, float, float, float, float, float>, 0>, boost::fusion::vector_iterator<const boost::fusion::vector6<long int, float, float, float, float, float>, 6> > >]’:
../../../addons/ofxTableGestures/src/oscGestures/tuioApp.hpp:122:   instantiated from ‘void tuio::AlternateCallback<C, M, E>::run(tuio::TEvent*) [with C = tuio::CanBasicFingers<Graphic>, M = void (tuio::CanBasicFingers<Graphic>::*)(long int, float, float, float, float, float), E = tuio::TeventBasicFingersMoveFinger]’
/home/thechaos/Projectes/of_preRelease_v0061_linux_FAT/addons/../apps/OF-TangibleFramework/ofxTableGestures/src/Graphics/objects/CursorFeedback.cpp:64:   instantiated from here
../../../addons/ofxTableGestures/ext/boost/fusion/functional/invocation/invoke_procedure.hpp:88: error: incomplete type ‘boost::fusion::detail::invoke_procedure_impl<void (tuio::CanBasicFingers<Graphic>::*)(long int, float, float, float, float, float), const boost::fusion::joint_view<boost::fusion::joint_view<boost::fusion::iterator_range<boost::fusion::vector_iterator<const boost::fusion::vector6<long int, float, float, float, float, float>, 0>, boost::fusion::vector_iterator<boost::fusion::vector6<long int, float, float, float, float, float>, 0> >, const boost::fusion::single_view<tuio::CanBasicFingers<Graphic>*> >, boost::fusion::iterator_range<boost::fusion::vector_iterator<boost::fusion::vector6<long int, float, float, float, float, float>, 0>, boost::fusion::vector_iterator<const boost::fusion::vector6<long int, float, float, float, float, float>, 6> > >, 7, true, false>’ used in nested name specifier

如果我将冲突代码复制到同一个文件，我可以编译它。所以我知道代码本身是正常的，问题是我实例化它的方式。

如何追踪此错误的来源？有没有办法获得c ++编译器和预处理器的跟踪以获得更多信息？

编辑：我正在使用gcc 4.4.1

Answer 1

如果你给我们编译器会更容易。

在gcc上，您可以使用-E选项查看预处理文件。如果您尝试编译预处理文件，它应该更容易诊断。此外，您将确切地了解所涉及的类型。

至于具体错误，最后一行通常是指示性的：

boost::fusion::detail::invoke_procedure_impl<
  void (tuio::CanBasicFingers<Graphic>::*)
       (long int, float, float, float, float, float),
  const boost::fusion::joint_view<

    boost::fusion::joint_view<
      boost::fusion::iterator_range<
        boost::fusion::vector_iterator<
           const boost::fusion::vector6<long int, float, float, float, float,
              float>,
           0
        >,
        boost::fusion::vector_iterator<
          boost::fusion::vector6<long int, float, float, float, float, float>,
          0
        >
      >,
      const boost::fusion::single_view< tuio::CanBasicFingers<Graphic>* >
    >, // joint_view

    boost::fusion::iterator_range<
      boost::fusion::vector_iterator<
        boost::fusion::vector6<long int, float, float, float, float, float>, 0
      >,
      boost::fusion::vector_iterator<
        const boost::fusion::vector6<long int, float, float, float, float,
            float>,
        6
      >
    > // iterator_range

  >,
  7,
  true,
  false
>

好的，所以重新格式化有点帮助。

您似乎拥有一个名称空间tuio，其中应包含一个模板类CanBasicFingers，您希望使用该Graphic实例并获取指向成员函数的指针。

假设您已将所有Boost.Fusion包含权限设置为正确，则可能无法正确包含CanBasicFingers或Graphic。

否则，在迭代器的常量中查找mix：使用const和非const迭代器定义范围，这是非常奇怪的。

您应该尝试单独调用它们。

作为诊断的一般技术，我只能推荐Divide And Conquer方法。你应该尝试逐渐建立表达式：

namespace fusion = boost::fusion;

// First
typedef void (tuio::CanBasicFingers<Graphic>::* function_t)
    (long int, float, float, float, float, float);

// Second
typedef fusion::vector6<long int, float, float, float, float, float> vector_t;

// Third: the iterators
typedef fusion::vector_iterator< const vector_t, 0 > const_iterator_begin;
typedef fusion::vector_iterator< const vector_t, 6 > const_iterator_end;

typedef fusion::vector_iterator< vector_t, 0 > iterator_begin;
typedef fusion::vector_iterator< vector_t, 6 > iterator_end;

// Fourth: the ranges
// (which const-ness are oddly messed up)
typedef fusion::iterator_range< const_iterator_begin, iterator_end > range_1;
typedef fusion::iterator_range< iterator_begin, const_iterator_end > range_2;

// Fifth the views
typedef const fusion::single_view<tuio::CanBasicFingers<Graphic>*> single_view;
typedef fusion::joint_view< range_1, single_view > joint_view_internal;
typedef fusion::joint_view< joint_view_internal, range_2 > joint_view_external;

// and here is the final type (aaaah!)
typedef fusion::detail::invoke_procedure_impl<
  function_t,
  joint_view_external,
  7,
  true,
  false
> procedure_type;

编译此分解形式，应该在更精确的位置产生错误：）

Answer 2

该类型似乎是（从错误的最后一行）：

boost::fusion::detail::invoke_procedure_impl<void (tuio::CanBasicFingers<Graphic>::*)(long int, float, float, float, float, float), const boost::fusion::joint_view<boost::fusion::joint_view<boost::fusion::iterator_range<boost::fusion::vector_iterator<const boost::fusion::vector6<long int, float, float, float, float, float>, 0>, boost::fusion::vector_iterator<boost::fusion::vector6<long int, float, float, float, float, float>, 0> >, const boost::fusion::single_view<tuio::CanBasicFingers<Graphic>*> >, boost::fusion::iterator_range<boost::fusion::vector_iterator<boost::fusion::vector6<long int, float, float, float, float, float>, 0>, boost::fusion::vector_iterator<const boost::fusion::vector6<long int, float, float, float, float, float>, 6> > >, 7, true, false>

这给了我一些我可能怀疑tuio::CanBasicFingers<>的可能性，因为include链包含tuioApp.hpp。如果在tuioApp.hpp中实例化时尚未定义tuio :: CanBasicFingers，则会出现错误。

解决困难的不完整类型错误

2 个答案: