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Ruta de la carpeta: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\intrusive\detail\transform_iterator.hpp
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///////////////////////////////////////////////////////////////////////////// // // (C) Copyright Ion Gaztanaga 2007 // // Distributed under the Boost Software License, Version 1.0. // (See accompanying file LICENSE_1_0.txt or copy at // http://www.boost.org/LICENSE_1_0.txt) // // See http://www.boost.org/libs/intrusive for documentation. // ///////////////////////////////////////////////////////////////////////////// #ifndef BOOST_INTRUSIVE_DETAIL_TRANSFORM_ITERATOR_HPP #define BOOST_INTRUSIVE_DETAIL_TRANSFORM_ITERATOR_HPP #include
#include
#include
namespace boost { namespace intrusive { namespace detail { template
struct operator_arrow_proxy { operator_arrow_proxy(const PseudoReference &px) : m_value(px) {} PseudoReference* operator->() const { return &m_value; } // This function is needed for MWCW and BCC, which won't call operator-> // again automatically per 13.3.1.2 para 8 // operator T*() const { return &m_value; } mutable PseudoReference m_value; }; template
struct operator_arrow_proxy
{ operator_arrow_proxy(T &px) : m_value(px) {} T* operator->() const { return &m_value; } // This function is needed for MWCW and BCC, which won't call operator-> // again automatically per 13.3.1.2 para 8 // operator T*() const { return &m_value; } mutable T &m_value; }; template
class transform_iterator : public std::iterator < typename Iterator::iterator_category , typename detail::remove_reference
::type , typename Iterator::difference_type , operator_arrow_proxy
, typename UnaryFunction::result_type> { public: explicit transform_iterator(const Iterator &it, const UnaryFunction &f = UnaryFunction()) : members_(it, f) {} explicit transform_iterator() : members_() {} Iterator get_it() const { return members_.m_it; } //Constructors transform_iterator& operator++() { increment(); return *this; } transform_iterator operator++(int) { transform_iterator result (*this); increment(); return result; } friend bool operator== (const transform_iterator& i, const transform_iterator& i2) { return i.equal(i2); } friend bool operator!= (const transform_iterator& i, const transform_iterator& i2) { return !(i == i2); } /* friend bool operator> (const transform_iterator& i, const transform_iterator& i2) { return i2 < i; } friend bool operator<= (const transform_iterator& i, const transform_iterator& i2) { return !(i > i2); } friend bool operator>= (const transform_iterator& i, const transform_iterator& i2) { return !(i < i2); } */ friend typename Iterator::difference_type operator- (const transform_iterator& i, const transform_iterator& i2) { return i2.distance_to(i); } //Arithmetic transform_iterator& operator+=(typename Iterator::difference_type off) { this->advance(off); return *this; } transform_iterator operator+(typename Iterator::difference_type off) const { transform_iterator other(*this); other.advance(off); return other; } friend transform_iterator operator+(typename Iterator::difference_type off, const transform_iterator& right) { return right + off; } transform_iterator& operator-=(typename Iterator::difference_type off) { this->advance(-off); return *this; } transform_iterator operator-(typename Iterator::difference_type off) const { return *this + (-off); } typename UnaryFunction::result_type operator*() const { return dereference(); } operator_arrow_proxy
operator->() const { return operator_arrow_proxy
(dereference()); } private: struct members : UnaryFunction { members(const Iterator &it, const UnaryFunction &f) : UnaryFunction(f), m_it(it) {} members() {} Iterator m_it; } members_; void increment() { ++members_.m_it; } void decrement() { --members_.m_it; } bool equal(const transform_iterator &other) const { return members_.m_it == other.members_.m_it; } bool less(const transform_iterator &other) const { return other.members_.m_it < members_.m_it; } typename UnaryFunction::result_type dereference() const { return members_(*members_.m_it); } void advance(typename Iterator::difference_type n) { std::advance(members_.m_it, n); } typename Iterator::difference_type distance_to(const transform_iterator &other)const { return std::distance(other.members_.m_it, members_.m_it); } }; } //namespace detail } //namespace intrusive } //namespace boost #include
#endif //BOOST_INTRUSIVE_DETAIL_TRANSFORM_ITERATOR_HPP
transform_iterator.hpp
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