模板类的非侵入式序列化方法
我正在使用 boost 序列化，主要是侵入式版本。对于模板 Matrix 类，我想要 非侵入式版本，适用于 Visual Studio，代码如下：
namespace boost
{
namespace serialization
{
template<class Archive, int R, int C, class ElementType>
void serialize(Archive & ar, Matrix<R, C, ElementType> & m, const unsigned int version)
{
ar & ...
}
}
}
int R、int C 是行和列、ElementType > 是双精度或浮点。
但是，这在 GCC 4.3.2 上不起作用，并出现错误
error: 'class Matrix<1u, 3u, double>' has no member named 'serialize'
If I use a Special form like
namespace boost
{
namespace serialization
{
template<class Archive>
void serialize(Archive & ar, Matrix<3,1,double> & m, const unsigned int version)
{
ar & ...
}
}
}
it compiles on GCC,但当然仅适用于一组特殊的模板参数。
我该怎么做才能使其在所有 R、C 和 ElementType 的两个编译器上运行？
编辑：这些是导致错误的行：
/[myfolder]/lib/BOOST/1_44_0/include/boost/serialization/access.hpp: In static member function 'static void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::binary_iarchive, T = Matrix<3u, 1u, double>]':
/[myfolder]/lib/BOOST/1_44_0/include/boost/serialization/serialization.hpp:70: instantiated from 'void boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::binary_iarchive, T = Matrix<3u, 1u, double>]'
/[myfolder]/lib/BOOST/1_44_0/include/boost/serialization/serialization.hpp:129: instantiated from 'void boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::archive::binary_iarchive, T = Matrix<3u, 1u, double>]'
/[myfolder]/lib/BOOST/1_44_0/include/boost/archive/detail/iserializer.hpp:182: instantiated from 'void boost::archive::detail::iserializer<Archive, T>::load_object_data(boost::archive::detail::basic_iarchive&, void*, unsigned int) const [with Archive = boost::archive::binary_iarchive, T = Matrix<3u, 1u, double>]'
I am using boost serialization, mostly the intrusive version. For a template Matrix class I would like to have the non-intrusive version which works on Visual Studio with the following code:
namespace boost
{
namespace serialization
{
template<class Archive, int R, int C, class ElementType>
void serialize(Archive & ar, Matrix<R, C, ElementType> & m, const unsigned int version)
{
ar & ...
}
}
}
int R, int C are the row and columns, ElementType is double or float.
However, this does not work on GCC 4.3.2 with the error
error: 'class Matrix<1u, 3u, double>' has no member named 'serialize'
If I use a special form like
namespace boost
{
namespace serialization
{
template<class Archive>
void serialize(Archive & ar, Matrix<3,1,double> & m, const unsigned int version)
{
ar & ...
}
}
}
it compiles on GCC, but of course only for a special set of template arguments.
What can I do to make it work on both compilers for all R, C and ElementType?
EDIT: These are the lines causing the error:
/[myfolder]/lib/BOOST/1_44_0/include/boost/serialization/access.hpp: In static member function 'static void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::binary_iarchive, T = Matrix<3u, 1u, double>]':
/[myfolder]/lib/BOOST/1_44_0/include/boost/serialization/serialization.hpp:70: instantiated from 'void boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::binary_iarchive, T = Matrix<3u, 1u, double>]'
/[myfolder]/lib/BOOST/1_44_0/include/boost/serialization/serialization.hpp:129: instantiated from 'void boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::archive::binary_iarchive, T = Matrix<3u, 1u, double>]'
/[myfolder]/lib/BOOST/1_44_0/include/boost/archive/detail/iserializer.hpp:182: instantiated from 'void boost::archive::detail::iserializer<Archive, T>::load_object_data(boost::archive::detail::basic_iarchive&, void*, unsigned int) const [with Archive = boost::archive::binary_iarchive, T = Matrix<3u, 1u, double>]'
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对我来说，这看起来像是有符号/无符号的不匹配。您的模板函数是用
int声明的，但错误表明它尝试与模板匹配的对象具有参数1u和3u。当您实例化尝试序列化的对象时，您是否使用无符号值作为维度？尝试更改您的序列化模板函数以采用unsigned或使用int实例化您的 Matrix。It looks like a signed/unsigned mismatch to me. Your template function is declared with
ints but the error indicates that the object which it's trying to match with the template has parameters1uand3u. When you instantiate the object that you're trying to serialize, are you using unsigned values for the dimensions? Try changing your serialize template function to takeunsigneds or instantiating your Matrix withints.