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bm::sparse_vector< Val, BV >::const_iterator Class Reference
BitMagic Library » bit-sliced (bitwise transposition) succinct sparse vectors

Const iterator to traverse the sparse vector. More...

#include <bmsparsevec.h>

Public Types

typedef std::input_iterator_tag iterator_category
typedef sparse_vector< Val, BV > sparse_vector_type
typedef sparse_vector_type * sparse_vector_type_ptr
typedef sparse_vector_type::value_type value_type
typedef sparse_vector_type::size_type size_type
typedef sparse_vector_type::bvector_type bvector_type
typedef bvector_type::allocator_type allocator_type
typedef bvector_type::allocator_type::allocator_pool_type allocator_pool_type
typedef bm::byte_buffer< allocator_type > buffer_type
typedef unsigned difference_type
typedef unsigned * pointer
typedef value_type & reference

Public Member Functions

 const_iterator () BMNOEXCEPT
 const_iterator (const sparse_vector_type *sv) BMNOEXCEPT
 const_iterator (const sparse_vector_type *sv, size_type pos) BMNOEXCEPT
 const_iterator (const const_iterator &it) BMNOEXCEPT
bool operator== (const const_iterator &it) const BMNOEXCEPT
bool operator!= (const const_iterator &it) const BMNOEXCEPT
bool operator< (const const_iterator &it) const BMNOEXCEPT
bool operator<= (const const_iterator &it) const BMNOEXCEPT
bool operator> (const const_iterator &it) const BMNOEXCEPT
bool operator>= (const const_iterator &it) const BMNOEXCEPT
value_type operator* () const
 Get current position (value).
const_iterator & operator++ () BMNOEXCEPT
 Advance to the next available value.
const_iterator operator++ (int)
 Advance to the next available value.
value_type value () const
 Get current position (value).
bool is_null () const BMNOEXCEPT
 Get NULL status.
bool valid () const BMNOEXCEPT
 Returns true if iterator is at a valid position.
void invalidate () BMNOEXCEPT
 Invalidate current iterator.
size_type pos () const BMNOEXCEPT
 Current position (index) in the vector.
void go_to (size_type pos) BMNOEXCEPT
 re-position to a specified position
bool advance () BMNOEXCEPT
 advance iterator forward by one
void skip_zero_values () BMNOEXCEPT

Friends

class sparse_vector

Detailed Description

template<class Val, class BV>
class bm::sparse_vector< Val, BV >::const_iterator

Const iterator to traverse the sparse vector.

Implementation uses buffer for decoding so, competing changes to the original vector may not match the iterator returned values.

This iterator keeps an operational buffer for 8K elements, so memory footprint is not negligable (about 64K for unsigned int)

Definition at line 157 of file bmsparsevec.h.

Member Typedef Documentation

◆ allocator_pool_type

template<class Val, class BV>
typedef bvector_type::allocator_type::allocator_pool_type bm::sparse_vector< Val, BV >::const_iterator::allocator_pool_type

Definition at line 171 of file bmsparsevec.h.

◆ allocator_type

template<class Val, class BV>
typedef bvector_type::allocator_type bm::sparse_vector< Val, BV >::const_iterator::allocator_type

Definition at line 170 of file bmsparsevec.h.

◆ buffer_type

template<class Val, class BV>
typedef bm::byte_buffer<allocator_type> bm::sparse_vector< Val, BV >::const_iterator::buffer_type

Definition at line 172 of file bmsparsevec.h.

◆ bvector_type

template<class Val, class BV>
typedef sparse_vector_type::bvector_type bm::sparse_vector< Val, BV >::const_iterator::bvector_type

Definition at line 169 of file bmsparsevec.h.

◆ difference_type

template<class Val, class BV>
typedef unsigned bm::sparse_vector< Val, BV >::const_iterator::difference_type

Definition at line 174 of file bmsparsevec.h.

◆ iterator_category

template<class Val, class BV>
typedef std::input_iterator_tag bm::sparse_vector< Val, BV >::const_iterator::iterator_category

Definition at line 163 of file bmsparsevec.h.

◆ pointer

template<class Val, class BV>
typedef unsigned* bm::sparse_vector< Val, BV >::const_iterator::pointer

Definition at line 175 of file bmsparsevec.h.

◆ reference

template<class Val, class BV>
typedef value_type& bm::sparse_vector< Val, BV >::const_iterator::reference

Definition at line 176 of file bmsparsevec.h.

◆ size_type

template<class Val, class BV>
typedef sparse_vector_type::size_type bm::sparse_vector< Val, BV >::const_iterator::size_type

Definition at line 168 of file bmsparsevec.h.

◆ sparse_vector_type

template<class Val, class BV>
typedef sparse_vector<Val, BV> bm::sparse_vector< Val, BV >::const_iterator::sparse_vector_type

Definition at line 165 of file bmsparsevec.h.

◆ sparse_vector_type_ptr

template<class Val, class BV>
typedef sparse_vector_type* bm::sparse_vector< Val, BV >::const_iterator::sparse_vector_type_ptr

Definition at line 166 of file bmsparsevec.h.

◆ value_type

template<class Val, class BV>
typedef sparse_vector_type::value_type bm::sparse_vector< Val, BV >::const_iterator::value_type

Definition at line 167 of file bmsparsevec.h.

Constructor & Destructor Documentation

◆ const_iterator() [1/4]

template<class Val, class BV>
bm::sparse_vector< Val, BV >::const_iterator::const_iterator ( )

Definition at line 2332 of file bmsparsevec.h.

References BMNOEXCEPT, and bm::id_max.

Referenced by const_iterator(), const_iterator(), const_iterator(), bm::sparse_vector< unsigned, bm::bvector<> >::end(), bm::sparse_vector< unsigned, bm::bvector<> >::get_const_iterator(), operator!=(), operator++(), operator++(), operator<(), operator<=(), operator==(), operator>(), and operator>=().

◆ const_iterator() [2/4]

template<class Val, class BV>
bm::sparse_vector< Val, BV >::const_iterator::const_iterator ( const sparse_vector_type * sv)

References BMNOEXCEPT, and const_iterator().

◆ const_iterator() [3/4]

template<class Val, class BV>
bm::sparse_vector< Val, BV >::const_iterator::const_iterator ( const sparse_vector_type * sv,
size_type pos )

References BMNOEXCEPT, const_iterator(), and pos().

◆ const_iterator() [4/4]

template<class Val, class BV>
bm::sparse_vector< Val, BV >::const_iterator::const_iterator ( const const_iterator & it)

References BMNOEXCEPT, and const_iterator().

Member Function Documentation

◆ advance()

template<class Val, class BV>
bool bm::sparse_vector< Val, BV >::const_iterator::advance ( )

advance iterator forward by one

Returns
true if it is still valid

Definition at line 2380 of file bmsparsevec.h.

References BMNOEXCEPT, bm::id_max, invalidate(), and bm::sparse_vector< Val, BV >::n_buf_size.

Referenced by operator++(), and operator++().

◆ go_to()

template<class Val, class BV>
void bm::sparse_vector< Val, BV >::const_iterator::go_to ( size_type pos)

re-position to a specified position

Definition at line 2371 of file bmsparsevec.h.

References BMNOEXCEPT, bm::id_max, and pos().

◆ invalidate()

template<class Val, class BV>
void bm::sparse_vector< Val, BV >::const_iterator::invalidate ( )
inline

Invalidate current iterator.

Definition at line 221 of file bmsparsevec.h.

References BMNOEXCEPT, and bm::id_max.

Referenced by advance().

◆ is_null()

template<class Val, class BV>
bool bm::sparse_vector< Val, BV >::const_iterator::is_null ( ) const

Get NULL status.

Definition at line 2449 of file bmsparsevec.h.

References BMNOEXCEPT.

◆ operator!=()

template<class Val, class BV>
bool bm::sparse_vector< Val, BV >::const_iterator::operator!= ( const const_iterator & it) const
inline

Definition at line 187 of file bmsparsevec.h.

References BMNOEXCEPT, const_iterator(), and operator==().

◆ operator*()

template<class Val, class BV>
value_type bm::sparse_vector< Val, BV >::const_iterator::operator* ( ) const
inline

Get current position (value).

Definition at line 199 of file bmsparsevec.h.

References value().

◆ operator++() [1/2]

template<class Val, class BV>
const_iterator & bm::sparse_vector< Val, BV >::const_iterator::operator++ ( )
inline

Advance to the next available value.

Definition at line 203 of file bmsparsevec.h.

References advance(), BMNOEXCEPT, and const_iterator().

◆ operator++() [2/2]

template<class Val, class BV>
const_iterator bm::sparse_vector< Val, BV >::const_iterator::operator++ ( int )
inline

Advance to the next available value.

Definition at line 207 of file bmsparsevec.h.

References advance(), and const_iterator().

◆ operator<()

template<class Val, class BV>
bool bm::sparse_vector< Val, BV >::const_iterator::operator< ( const const_iterator & it) const
inline

Definition at line 189 of file bmsparsevec.h.

References BMNOEXCEPT, and const_iterator().

◆ operator<=()

template<class Val, class BV>
bool bm::sparse_vector< Val, BV >::const_iterator::operator<= ( const const_iterator & it) const
inline

Definition at line 191 of file bmsparsevec.h.

References BMNOEXCEPT, and const_iterator().

◆ operator==()

template<class Val, class BV>
bool bm::sparse_vector< Val, BV >::const_iterator::operator== ( const const_iterator & it) const
inline

Definition at line 185 of file bmsparsevec.h.

References BMNOEXCEPT, and const_iterator().

Referenced by operator!=().

◆ operator>()

template<class Val, class BV>
bool bm::sparse_vector< Val, BV >::const_iterator::operator> ( const const_iterator & it) const
inline

Definition at line 193 of file bmsparsevec.h.

References BMNOEXCEPT, and const_iterator().

◆ operator>=()

template<class Val, class BV>
bool bm::sparse_vector< Val, BV >::const_iterator::operator>= ( const const_iterator & it) const
inline

Definition at line 195 of file bmsparsevec.h.

References BMNOEXCEPT, and const_iterator().

◆ pos()

template<class Val, class BV>
size_type bm::sparse_vector< Val, BV >::const_iterator::pos ( ) const
inline

Current position (index) in the vector.

Definition at line 224 of file bmsparsevec.h.

References BMNOEXCEPT.

Referenced by const_iterator(), and go_to().

◆ skip_zero_values()

template<class Val, class BV>
void bm::sparse_vector< Val, BV >::const_iterator::skip_zero_values ( )

Definition at line 2421 of file bmsparsevec.h.

References BMNOEXCEPT, bm::id_max, bm::sparse_vector< Val, BV >::n_buf_size, and value().

◆ valid()

template<class Val, class BV>
bool bm::sparse_vector< Val, BV >::const_iterator::valid ( ) const
inline

Returns true if iterator is at a valid position.

Definition at line 218 of file bmsparsevec.h.

References BMNOEXCEPT, bm::id_max, and valid().

Referenced by valid(), and value().

◆ value()

template<class Val, class BV>
sparse_vector< Val, BV >::const_iterator::value_type bm::sparse_vector< Val, BV >::const_iterator::value ( ) const

Get current position (value).

Definition at line 2403 of file bmsparsevec.h.

References BM_ASSERT, bm::sparse_vector< Val, BV >::n_buf_size, and valid().

Referenced by operator*(), and skip_zero_values().

◆ sparse_vector

template<class Val, class BV>
friend class sparse_vector
friend

Definition at line 160 of file bmsparsevec.h.

References sparse_vector.

Referenced by sparse_vector.

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