DynamicSparsityPatternIterators::Accessor Class Reference

#include <deal.II/lac/dynamic_sparsity_pattern.h>

Public Member Functions
	Accessor (const DynamicSparsityPattern *sparsity_pattern, const size_type row, const unsigned int index_within_row)
	Accessor (const DynamicSparsityPattern *sparsity_pattern)
	Accessor ()
size_type	row () const
size_type	index () const
size_type	column () const
bool	operator== (const Accessor &) const
bool	operator< (const Accessor &) const

Protected Member Functions
void	advance ()

Static Protected Member Functions
static ::ExceptionBase &	DummyAccessor ()

Protected Attributes
const DynamicSparsityPattern *	sparsity_pattern
size_type	current_row
std::vector< size_type >::const_iterator	current_entry
std::vector< size_type >::const_iterator	end_of_row

Friends
class	Iterator

Detailed Description

Accessor class for iterators into objects of type DynamicSparsityPattern.

Note that this class only allows read access to elements, providing their row and column number (or alternatively the index within the complete sparsity pattern). It does not allow modifying the sparsity pattern itself.

Author

Wolfgang Bangerth

Date

2015

Definition at line 65 of file dynamic_sparsity_pattern.h.

Constructor & Destructor Documentation

Accessor() [1/3]

DynamicSparsityPatternIterators::Accessor::Accessor ( const DynamicSparsityPattern *  sparsity_pattern, const size_type  row, const unsigned int  index_within_row  )

inline

Constructor.

Definition at line 747 of file dynamic_sparsity_pattern.h.

Accessor() [2/3]

DynamicSparsityPatternIterators::Accessor::Accessor ( const DynamicSparsityPattern *  sparsity_pattern )

inline

Constructor. Construct the end accessor for the given sparsity pattern.

Definition at line 783 of file dynamic_sparsity_pattern.h.

Accessor() [3/3]

DynamicSparsityPatternIterators::Accessor::Accessor ( )

inline

Default constructor creating a dummy accessor. This constructor is here only to be able to store accessors in STL containers such as std::vector.

Definition at line 792 of file dynamic_sparsity_pattern.h.

Member Function Documentation

row()

size_type DynamicSparsityPatternIterators::Accessor::row ( ) const

inline

Row number of the element represented by this object.

Definition at line 801 of file dynamic_sparsity_pattern.h.

index()

size_type DynamicSparsityPatternIterators::Accessor::index ( ) const

inline

Index within the current row of the element represented by this object.

Definition at line 821 of file dynamic_sparsity_pattern.h.

column()

size_type DynamicSparsityPatternIterators::Accessor::column ( ) const

inline

Column number of the element represented by this object.

Definition at line 811 of file dynamic_sparsity_pattern.h.

operator==()

bool DynamicSparsityPatternIterators::Accessor::operator== ( const Accessor &  other ) const

inline

Comparison. True, if both iterators point to the same matrix position.

Definition at line 837 of file dynamic_sparsity_pattern.h.

operator<()

bool DynamicSparsityPatternIterators::Accessor::operator< ( const Accessor &  other ) const

inline

Comparison operator. Result is true if either the first row number is smaller or if the row numbers are equal and the first index is smaller.

This function is only valid if both iterators point into the same sparsity pattern.

Definition at line 854 of file dynamic_sparsity_pattern.h.

advance()

void DynamicSparsityPatternIterators::Accessor::advance ( )

inlineprotected

Move the accessor to the next nonzero entry in the matrix.

Definition at line 880 of file dynamic_sparsity_pattern.h.

Friends And Related Function Documentation

Iterator

friend class Iterator

friend

Grant access to iterator class.

Mark all other instances of this template as friends.

Definition at line 161 of file dynamic_sparsity_pattern.h.

Member Data Documentation

sparsity_pattern

const DynamicSparsityPattern* DynamicSparsityPatternIterators::Accessor::sparsity_pattern

protected

The sparsity pattern we operate on accessed.

Definition at line 131 of file dynamic_sparsity_pattern.h.

current_row

size_type DynamicSparsityPatternIterators::Accessor::current_row

protected

The row we currently point into.

Definition at line 136 of file dynamic_sparsity_pattern.h.

current_entry

std::vector<size_type>::const_iterator DynamicSparsityPatternIterators::Accessor::current_entry

protected

A pointer to the element within the current row that we currently point to.

Definition at line 142 of file dynamic_sparsity_pattern.h.

end_of_row

std::vector<size_type>::const_iterator DynamicSparsityPatternIterators::Accessor::end_of_row

protected

A pointer to the end of the current row. We store this to make comparison against the end of line iterator cheaper as it otherwise needs to do the IndexSet translation from row index to the index within the 'lines' array of DynamicSparsityPattern.

Definition at line 150 of file dynamic_sparsity_pattern.h.

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The documentation for this class was generated from the following file:

• deal.II/lac/dynamic_sparsity_pattern.h