Internally used base for iterator and const_iterator. More...

Inheritance diagram for HashTable< T, Key, Hash >::Iterator< Const >:

Public Types
using	iterator_category = std::forward_iterator_tag

using	difference_type = this_type::difference_type

using	table_type = std::conditional_t< Const, const this_type, this_type >
	The HashTable container type. More...

using	node_type = std::conditional_t< Const, const this_type::node_type, this_type::node_type >
	The node-type being addressed. More...

using	key_type = this_type::key_type
	The key type. More...

using	mapped_type = std::conditional_t< Const, const this_type::mapped_type, this_type::mapped_type >
	The object type being addressed. More...

Public Member Functions
bool	good () const noexcept
	True if iterator points to an entry. More...

bool	found () const noexcept
	True if iterator points to an entry - same as good() More...

const Key &	key () const
	The key associated with the iterator. More...

Ostream &	print (Ostream &os) const
	Write the (key, val) pair. More...

	operator bool () const noexcept
	True if iterator points to an entry. More...

template<bool Any>
bool	operator== (const Iterator< Any > &iter) const noexcept
	Compare hash-entry element pointers. More...

template<bool Any>
bool	operator!= (const Iterator< Any > &iter) const noexcept

Protected Member Functions
constexpr	Iterator () noexcept
	Default construct. Also the same as the end iterator. More...

	Iterator (table_type *tbl)
	Construct from begin of hash-table. More...

	Iterator (table_type *tbl, const Key &key)
	Construct by finding key in hash table. More...

void	increment ()
	Increment to the next position. More...

template<bool Any>
	operator const Iterator< Any > & () const
	Permit explicit cast to the other (const/non-const) iterator. More...

Protected Attributes
node_type *	entry_
	The selected entry. More...

table_type *	container_
	The hash-table container being iterated on. More...

label	index_
	Index within the hash-table data. More...

Friends
class	HashTable

Detailed Description

template<class T, class Key = word, class Hash = Foam::Hash<Key>>
template<bool Const>
class Foam::HashTable< T, Key, Hash >::Iterator< Const >

Internally used base for iterator and const_iterator.

The iterator base for HashTable (internal use only).

Note: data and functions are protected, to allow reuse by iterator and prevent most external usage. iterator and const_iterator have the same size, allowing us to reinterpret_cast between them (if desired)

Definition at line 849 of file HashTable.H.

Member Typedef Documentation

◆ iterator_category

using iterator_category = std::forward_iterator_tag

Definition at line 876 of file HashTable.H.

◆ difference_type

using difference_type = this_type::difference_type

Definition at line 877 of file HashTable.H.

◆ table_type

using table_type = std::conditional_t < Const, const this_type, this_type >

The HashTable container type.

Definition at line 887 of file HashTable.H.

◆ node_type

using node_type = std::conditional_t < Const, const this_type::node_type, this_type::node_type >

The node-type being addressed.

Definition at line 897 of file HashTable.H.

◆ key_type

using key_type = this_type::key_type

The key type.

Definition at line 902 of file HashTable.H.

◆ mapped_type

using mapped_type = std::conditional_t < Const, const this_type::mapped_type, this_type::mapped_type >

The object type being addressed.

Definition at line 912 of file HashTable.H.

Constructor & Destructor Documentation

◆ Iterator() [1/3]

constexpr Iterator ( )

inlineprotectednoexcept

Default construct. Also the same as the end iterator.

Definition at line 26 of file HashTableIterI.H.

◆ Iterator() [2/3]

Iterator ( table_type * tbl )

inlineexplicitprotected

Construct from begin of hash-table.

Definition at line 37 of file HashTableIterI.H.

◆ Iterator() [3/3]

Iterator	(	table_type *	tbl,
		const Key &	key
	)

protected

Construct by finding key in hash table.

Definition at line 26 of file HashTableIter.C.

Member Function Documentation

◆ increment()

void increment ( )

inlineprotected

Increment to the next position.

Definition at line 72 of file HashTableIterI.H.

◆ operator const Iterator< Any > &()

operator const Iterator< Any > & ( ) const

inlineexplicitprotected

Permit explicit cast to the other (const/non-const) iterator.

Definition at line 975 of file HashTable.H.

◆ good()

bool good ( ) const

inlinenoexcept

True if iterator points to an entry.

This can be used directly instead of comparing to end()

Definition at line 990 of file HashTable.H.

◆ found()

bool found ( ) const

inlinenoexcept

True if iterator points to an entry - same as good()

Definition at line 995 of file HashTable.H.

◆ key()

const Key& key ( ) const

inline

The key associated with the iterator.

Definition at line 1000 of file HashTable.H.

◆ print()

Foam::Ostream & print ( Ostream & os ) const

inline

Write the (key, val) pair.

Definition at line 109 of file HashTableIterI.H.

◆ operator bool()

operator bool ( ) const

inlineexplicitnoexcept

True if iterator points to an entry.

This can be used directly instead of comparing to end()

Definition at line 1015 of file HashTable.H.

◆ operator==()

bool operator== ( const Iterator< Any > & iter ) const

inlinenoexcept

Compare hash-entry element pointers.

Independent of const/non-const access

Definition at line 1023 of file HashTable.H.

◆ operator!=()

bool operator!= ( const Iterator< Any > & iter ) const

inlinenoexcept

Definition at line 1029 of file HashTable.H.

Friends And Related Function Documentation

◆ HashTable

friend class HashTable

friend

Definition at line 943 of file HashTable.H.

Member Data Documentation

◆ entry_

node_type* entry_

protected

The selected entry.

MUST be the first member for easy comparison between iterators and to support reinterpret_cast from nullObject

Definition at line 925 of file HashTable.H.

Referenced by HashTable< T, Key, Hash >::Iterator< true >::found(), HashTable< T, Key, Hash >::Iterator< true >::good(), HashTable< T, Key, Hash >::Iterator< true >::key(), HashTable< T, Key, Hash >::Iterator< true >::operator bool(), HashTable< T, Key, Hash >::Iterator< true >::operator!=(), and HashTable< T, Key, Hash >::Iterator< true >::operator==().

◆ container_

table_type* container_

protected

The hash-table container being iterated on.

Uses pointer for default copy/assignment

Definition at line 932 of file HashTable.H.

◆ index_

label index_

protected

Index within the hash-table data.

A signed value, since iterator_erase() needs a negative value to mark the position.

Definition at line 940 of file HashTable.H.

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

src/OpenFOAM/containers/HashTables/HashTable/HashTable.H
src/OpenFOAM/containers/HashTables/HashTable/HashTableIter.C
src/OpenFOAM/containers/HashTables/HashTable/HashTableIterI.H

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Friends

Detailed Description

template<class T, class Key = word, class Hash = Foam::Hash<Key>> template<bool Const> class Foam::HashTable< T, Key, Hash >::Iterator< Const >

Member Typedef Documentation

◆ iterator_category

◆ difference_type

◆ table_type

◆ node_type

◆ key_type

◆ mapped_type

Constructor & Destructor Documentation

◆ Iterator() [1/3]

◆ Iterator() [2/3]

◆ Iterator() [3/3]

Member Function Documentation

◆ increment()

◆ operator const Iterator< Any > &()

◆ good()

◆ found()

◆ key()

◆ print()

◆ operator bool()

◆ operator==()

◆ operator!=()

Friends And Related Function Documentation

◆ HashTable

Member Data Documentation

◆ entry_

◆ container_

◆ index_

template<class T, class Key = word, class Hash = Foam::Hash<Key>>
template<bool Const>
class Foam::HashTable< T, Key, Hash >::Iterator< Const >