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#ifndef EIGEN_STDVECTOR_MODULE_H
#define EIGEN_STDVECTOR_MODULE_H
#if defined(_GLIBCXX_VECTOR) || defined(_VECTOR_)
#error you must include Eigen/StdVector before std::vector
#endif
#define vector std_vector
#include <vector>
#undef vector
namespace Eigen {
template<typename T> class aligned_allocator;
// meta programming to determine if a class has a given member
struct ei_does_not_have_aligned_operator_new_marker_sizeof {int a[1];};
struct ei_has_aligned_operator_new_marker_sizeof {int a[2];};
template<typename ClassType>
struct ei_has_aligned_operator_new {
template<typename T>
static ei_has_aligned_operator_new_marker_sizeof
test(T const *, typename T::ei_operator_new_marker_type const * = 0);
static ei_does_not_have_aligned_operator_new_marker_sizeof
test(...);
// note that the following indirection is needed for gcc-3.3
enum {ret = sizeof(test(static_cast<ClassType*>(0)))
== sizeof(ei_has_aligned_operator_new_marker_sizeof) };
};
#ifdef _MSVC_VER
// sometimes, MSVC detects, at compile time, that the argument x
// in std::vector::resize(size_t s,T x) won't be aligned and generate an error
// even if this function is never called. Whence this little wrapper.
#define _EIGEN_WORKAROUND_MSVC_STD_VECTOR(T) Eigen::ei_workaround_msvc_std_vector<T>
template<typename T> struct ei_workaround_msvc_std_vector : public T
{
inline ei_workaround_msvc_std_vector() : T() {}
inline ei_workaround_msvc_std_vector(const T& other) : T(other) {}
inline operator T& () { return *static_cast<T*>(this); }
inline operator const T& () const { return *static_cast<const T*>(this); }
template<typename OtherT>
inline T& operator=(const OtherT& other)
{ T::operator=(other); return *this; }
inline ei_workaround_msvc_std_vector& operator=(const ei_workaround_msvc_std_vector& other)
{ T::operator=(other); return *this; }
};
#else
#define _EIGEN_WORKAROUND_MSVC_STD_VECTOR(T) T
#endif
}
namespace std {
#define EIGEN_STD_VECTOR_SPECIALIZATION_BODY \
public: \
typedef T value_type; \
typedef typename vector_base::allocator_type allocator_type; \
typedef typename vector_base::size_type size_type; \
typedef typename vector_base::iterator iterator; \
explicit vector(const allocator_type& __a = allocator_type()) : vector_base(__a) {} \
vector(const vector& c) : vector_base(c) {} \
vector(size_type num, const value_type& val = value_type()) : vector_base(num, val) {} \
vector(iterator start, iterator end) : vector_base(start, end) {} \
vector& operator=(const vector& __x) { \
vector_base::operator=(__x); \
return *this; \
}
template<typename T,
typename AllocT = std::allocator<T>,
bool HasAlignedNew = Eigen::ei_has_aligned_operator_new<T>::ret>
class vector : public std::std_vector<T,AllocT>
{
typedef std_vector<T, AllocT> vector_base;
EIGEN_STD_VECTOR_SPECIALIZATION_BODY
};
template<typename T,typename DummyAlloc>
class vector<T,DummyAlloc,true>
: public std::std_vector<_EIGEN_WORKAROUND_MSVC_STD_VECTOR(T),
Eigen::aligned_allocator<_EIGEN_WORKAROUND_MSVC_STD_VECTOR(T)> >
{
typedef std_vector<_EIGEN_WORKAROUND_MSVC_STD_VECTOR(T),
Eigen::aligned_allocator<_EIGEN_WORKAROUND_MSVC_STD_VECTOR(T)> > vector_base;
EIGEN_STD_VECTOR_SPECIALIZATION_BODY
void resize(size_type __new_size)
{ resize(__new_size, T()); }
#if defined(_GLIBCXX_VECTOR)
void resize(size_type __new_size, const value_type& __x)
{
if (__new_size < vector_base::size())
vector_base::_M_erase_at_end(this->_M_impl._M_start + __new_size);
else
vector_base::insert(vector_base::end(), __new_size - vector_base::size(), __x);
}
#elif defined(_VECTOR_)
void resize(size_type __new_size, const value_type& __x)
{
if (vector_base::size() < __new_size)
vector_base::_Insert_n(vector_base::end(), __new_size - vector_base::size(), __x);
else if (__new_size < vector_base::size())
vector_base::erase(vector_base::begin() + __new_size, vector_base::end());
}
#endif
};
}
#endif // EIGEN_STDVECTOR_MODULE_H
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