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(-)a/Eigen/src/Core/StlIterators.h (+89 lines)
Lines 103-110 Link Here
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  pointer m_ptr;
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  pointer m_ptr;
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  internal::variable_if_dynamic<Index, XprType::InnerStrideAtCompileTime> m_incr;
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  internal::variable_if_dynamic<Index, XprType::InnerStrideAtCompileTime> m_incr;
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  friend class pointer_based_stl_iterator<const XprType>;
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};
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};
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template<typename NcXprType>
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class pointer_based_stl_iterator<const NcXprType>
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{
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  typedef const NcXprType XprType;
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  typedef pointer_based_stl_iterator<NcXprType> nc_pointer_based_stl_iterator;
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  enum { is_lvalue  = internal::is_lvalue<XprType>::value };
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public:
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  typedef Index difference_type;
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  typedef typename XprType::Scalar value_type;
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  typedef std::random_access_iterator_tag iterator_category;
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  typedef typename internal::conditional<bool(is_lvalue), value_type*, const value_type*>::type pointer;
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  typedef typename internal::conditional<bool(is_lvalue), value_type&, const value_type&>::type reference;
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  pointer_based_stl_iterator() : m_ptr(0) {}
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  pointer_based_stl_iterator(XprType& xpr, Index index) : m_incr(xpr.innerStride())
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  {
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    m_ptr = xpr.data() + index * m_incr.value();
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  }
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  pointer_based_stl_iterator(const pointer_based_stl_iterator& other) : m_ptr(other.m_ptr), m_incr(other.m_incr) {}
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  pointer_based_stl_iterator(const nc_pointer_based_stl_iterator& other) : m_ptr(other.m_ptr), m_incr(other.m_incr) {}
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  pointer_based_stl_iterator& operator=(const pointer_based_stl_iterator& other) {
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    m_ptr = other.m_ptr;
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    m_incr = other.m_incr;
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    return *this;
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  }
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  reference operator*()         const { return *m_ptr;   }
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  reference operator[](Index i) const { return *(m_ptr+i*m_incr.value()); }
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  pointer   operator->()        const { return m_ptr;    }
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  pointer_based_stl_iterator& operator++() { m_ptr += m_incr.value(); return *this; }
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  pointer_based_stl_iterator& operator--() { m_ptr -= m_incr.value(); return *this; }
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  pointer_based_stl_iterator operator++(int) { pointer_based_stl_iterator prev(*this); operator++(); return prev;}
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  pointer_based_stl_iterator operator--(int) { pointer_based_stl_iterator prev(*this); operator--(); return prev;}
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  friend pointer_based_stl_iterator operator+(const pointer_based_stl_iterator& a, Index b) { pointer_based_stl_iterator ret(a); ret += b; return ret; }
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  friend pointer_based_stl_iterator operator-(const pointer_based_stl_iterator& a, Index b) { pointer_based_stl_iterator ret(a); ret -= b; return ret; }
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  friend pointer_based_stl_iterator operator+(Index a, const pointer_based_stl_iterator& b) { pointer_based_stl_iterator ret(b); ret += a; return ret; }
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  friend pointer_based_stl_iterator operator-(Index a, const pointer_based_stl_iterator& b) { pointer_based_stl_iterator ret(b); ret -= a; return ret; }
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  pointer_based_stl_iterator& operator+=(Index b) { m_ptr += b*m_incr.value(); return *this; }
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  pointer_based_stl_iterator& operator-=(Index b) { m_ptr -= b*m_incr.value(); return *this; }
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  difference_type operator-(const pointer_based_stl_iterator& other) const {
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    return (m_ptr - other.m_ptr)/m_incr.value();
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  }
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  bool operator==(const pointer_based_stl_iterator& other) const { return m_ptr == other.m_ptr; }
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  bool operator!=(const pointer_based_stl_iterator& other) const { return m_ptr != other.m_ptr; }
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  bool operator< (const pointer_based_stl_iterator& other) const { return m_ptr <  other.m_ptr; }
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  bool operator<=(const pointer_based_stl_iterator& other) const { return m_ptr <= other.m_ptr; }
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  bool operator> (const pointer_based_stl_iterator& other) const { return m_ptr >  other.m_ptr; }
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  bool operator>=(const pointer_based_stl_iterator& other) const { return m_ptr >= other.m_ptr; }
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  difference_type operator-(const nc_pointer_based_stl_iterator& other) const {
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    return (m_ptr - other.m_ptr)/m_incr.value();
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  }
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  bool operator==(const nc_pointer_based_stl_iterator& other) const { return m_ptr == other.m_ptr; }
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  bool operator!=(const nc_pointer_based_stl_iterator& other) const { return m_ptr != other.m_ptr; }
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  bool operator< (const nc_pointer_based_stl_iterator& other) const { return m_ptr <  other.m_ptr; }
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  bool operator<=(const nc_pointer_based_stl_iterator& other) const { return m_ptr <= other.m_ptr; }
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  bool operator> (const nc_pointer_based_stl_iterator& other) const { return m_ptr >  other.m_ptr; }
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  bool operator>=(const nc_pointer_based_stl_iterator& other) const { return m_ptr >= other.m_ptr; }
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  friend difference_type operator-(const nc_pointer_based_stl_iterator& a, const pointer_based_stl_iterator& b) {
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    return -(b - a);
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  }
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  friend bool operator==(const nc_pointer_based_stl_iterator& a, const pointer_based_stl_iterator& b) { return b == a; }
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  friend bool operator!=(const nc_pointer_based_stl_iterator& a, const pointer_based_stl_iterator& b) { return b != a; }
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  friend bool operator< (const nc_pointer_based_stl_iterator& a, const pointer_based_stl_iterator& b) { return b >= a; }
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  friend bool operator<=(const nc_pointer_based_stl_iterator& a, const pointer_based_stl_iterator& b) { return b > a; }
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  friend bool operator> (const nc_pointer_based_stl_iterator& a, const pointer_based_stl_iterator& b) { return b <= a; }
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  friend bool operator>=(const nc_pointer_based_stl_iterator& a, const pointer_based_stl_iterator& b) { return b < a; }
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protected:
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  pointer m_ptr;
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  internal::variable_if_dynamic<Index, XprType::InnerStrideAtCompileTime> m_incr;
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};
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template<typename XprType>
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template<typename XprType>
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class generic_randaccess_stl_iterator : public indexed_based_stl_iterator_base<XprType, generic_randaccess_stl_iterator<XprType> >
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class generic_randaccess_stl_iterator : public indexed_based_stl_iterator_base<XprType, generic_randaccess_stl_iterator<XprType> >
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{
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{
(-)a/test/stl_iterators.cpp (-26 / +42 lines)
Lines 61-92 Link Here
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  i = 0;
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  i = 0;
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  for(typename Xpr::const_iterator it = cxpr.begin(); it!=cxpr.end(); ++it) { VERIFY_IS_EQUAL(*it,xpr[i++]); }
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  for(typename Xpr::const_iterator it = cxpr.begin(); it!=cxpr.end(); ++it) { VERIFY_IS_EQUAL(*it,xpr[i++]); }
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  // Needs to be uncommented while fixing bug 1619
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  i = 0;
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  // i = 0;
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  for(typename Xpr::const_iterator it = xpr.begin(); it!=xpr.end(); ++it) { VERIFY_IS_EQUAL(*it,xpr[i++]); }
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  // for(typename Xpr::const_iterator it = xpr.begin(); it!=xpr.end(); ++it) { VERIFY_IS_EQUAL(*it,xpr[i++]); }
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  if(xpr.size()>0) {
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  if(xpr.size()>0) {
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    VERIFY(xpr.begin() != xpr.end());
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    VERIFY(xpr.begin() != xpr.end());
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    VERIFY(xpr.begin() < xpr.end());
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    VERIFY(xpr.begin() < xpr.end());
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    VERIFY(xpr.begin() <= xpr.end());
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    VERIFY(xpr.begin() <= xpr.end());
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    VERIFY(!(xpr.begin() == xpr.end()));
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    VERIFY(!(xpr.begin() == xpr.end()));
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    VERIFY(!(xpr.begin() < xpr.end()));
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    VERIFY(!(xpr.begin() > xpr.end()));
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    VERIFY(!(xpr.begin() <= xpr.end()));
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    VERIFY(!(xpr.begin() >= xpr.end()));
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    // Needs to be uncommented while fixing bug 1619
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    VERIFY(xpr.cbegin() != xpr.end());
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    // VERIFY(xpr.cbegin() != xpr.end());
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    VERIFY(xpr.cbegin() < xpr.end());
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    // VERIFY(xpr.cbegin() < xpr.end());
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    VERIFY(xpr.cbegin() <= xpr.end());
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    // VERIFY(xpr.cbegin() <= xpr.end());
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    VERIFY(!(xpr.cbegin() == xpr.end()));
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    // VERIFY(!(xpr.cbegin() == xpr.end()));
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    VERIFY(!(xpr.cbegin() > xpr.end()));
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    // VERIFY(!(xpr.cbegin() < xpr.end()));
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    VERIFY(!(xpr.cbegin() >= xpr.end()));
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    // VERIFY(!(xpr.cbegin() <= xpr.end()));
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    VERIFY(xpr.begin() != xpr.cend());
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    // VERIFY(xpr.begin() != xpr.cend());
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    VERIFY(xpr.begin() < xpr.cend());
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    // VERIFY(xpr.begin() < xpr.cend());
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    VERIFY(xpr.begin() <= xpr.cend());
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    // VERIFY(xpr.begin() <= xpr.cend());
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    VERIFY(!(xpr.begin() == xpr.cend()));
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    // VERIFY(!(xpr.begin() == xpr.cend()));
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    VERIFY(!(xpr.begin() > xpr.cend()));
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    // VERIFY(!(xpr.begin() < xpr.cend()));
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    VERIFY(!(xpr.begin() >= xpr.cend()));
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    // VERIFY(!(xpr.begin() <= xpr.cend()));
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  }
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  }
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}
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}
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Lines 140-146 Link Here
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  {
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  {
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    check_begin_end_for_loop(v);
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    check_begin_end_for_loop(v);
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    check_begin_end_for_loop(v.col(internal::random<Index>(0,A.cols()-1)));
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    // TODO: This causes crashes at mainline.
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    //check_begin_end_for_loop(v.col(internal::random<Index>(0,A.cols()-1)));
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    check_begin_end_for_loop(v.row(internal::random<Index>(0,A.rows()-1)));
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    check_begin_end_for_loop(v.row(internal::random<Index>(0,A.rows()-1)));
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  }
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  }
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Lines 419-433 Link Here
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// a valid type, the first overload is not viable, and the second
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// a valid type, the first overload is not viable, and the second
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// overload will be picked.
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// overload will be picked.
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template <class C,
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template <class C,
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    class Iterator = decltype(::std::declval<const C&>().begin()),
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          class Iterator = decltype(::std::declval<const C&>().begin()),
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    class = decltype(::std::declval<const C&>().end()),
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          class = decltype(::std::declval<const C&>().end()),
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    class = decltype(++::std::declval<Iterator&>()),
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          class = decltype(++::std::declval<Iterator&>()),
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    class = decltype(*::std::declval<Iterator>()),
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          class = decltype(*::std::declval<Iterator>()),
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    class = typename C::const_iterator>
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          class = typename C::const_iterator>
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bool IsContainerType(int /* dummy */) { return true; }
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bool IsContainerType(int /* dummy */) { return true; }
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template <class C>
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template <class C>
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bool IsContainerType(long /* dummy */) { return false; }
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constexpr bool IsContainerType(long /* dummy */) { return false; }
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// TODO: Consider uncommenting these, and commenting above 'true' case to test if iterators are not just typedefed, but also usable:
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// template <class C>
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// constexpr bool IsContainerType(int /* dummy */, typename C::iterator */*a*/ = nullptr, typename C::const_iterator */*b*/ = nullptr) { return true; }
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// template <typename DenseType>
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// typename std::enable_if<IsContainerType<DenseType>(0), void>::type checkIterators(const DenseType &dt) {
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//   VERIFY_IS_EQUAL(dt.begin(), dt.cbegin());
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// }
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// template <typename DenseType>
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// typename std::enable_if<!IsContainerType<DenseType>(0), void>::type checkIterators(const DenseType &dt) {}
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template <typename Scalar, int Rows, int Cols>
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template <typename Scalar, int Rows, int Cols>
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void test_stl_container_detection(int rows=Rows, int cols=Cols)
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void test_stl_container_detection(int rows=Rows, int cols=Cols)
Lines 456-461 Link Here
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  // But the matrix itself is not a valid Stl-style container.
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  // But the matrix itself is not a valid Stl-style container.
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  VERIFY_IS_EQUAL(IsContainerType<ColMatrixType>(0), rows == 1 || cols == 1);
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  VERIFY_IS_EQUAL(IsContainerType<ColMatrixType>(0), rows == 1 || cols == 1);
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  VERIFY_IS_EQUAL(IsContainerType<RowMatrixType>(0), rows == 1 || cols == 1);
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  VERIFY_IS_EQUAL(IsContainerType<RowMatrixType>(0), rows == 1 || cols == 1);
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  // Paired with above TODO, compile-time check for usefulness of iterators.
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  // checkIterators(ColMatrixType());
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}
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}
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#endif
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#endif
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