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nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType > Class Template Reference

a template for a bidirectional iterator for the basic_json class This class implements a both iterators (iterator and const_iterator) for the basic_json class. More...

#include <json.hpp>

Collaboration diagram for nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >:
Collaboration graph

Public Types

using difference_type = typename BasicJsonType::difference_type
 a type to represent differences between iterators More...
 
using iterator_category = std::bidirectional_iterator_tag
 
using pointer = typename std::conditional< std::is_const< BasicJsonType >::value, typename BasicJsonType::const_pointer, typename BasicJsonType::pointer >::type
 defines a pointer to the type iterated over (value_type) More...
 
using reference = typename std::conditional< std::is_const< BasicJsonType >::value, typename BasicJsonType::const_reference, typename BasicJsonType::reference >::type
 defines a reference to the type iterated over (value_type) More...
 
using value_type = typename BasicJsonType::value_type
 the type of the values when the iterator is dereferenced More...
 

Public Member Functions

 iter_impl ()=default
 
 iter_impl (const iter_impl< const BasicJsonType > &other) noexcept
 const copy constructor More...
 
 iter_impl (const iter_impl< typename std::remove_const< BasicJsonType >::type > &other) noexcept
 converting constructor More...
 
 iter_impl (iter_impl &&) noexcept=default
 
 iter_impl (pointer object) noexcept
 constructor for a given JSON instance More...
 
const object_t::key_type & key () const
 return the key of an object iterator More...
 
template<typename IterImpl , detail::enable_if_t<(std::is_same< IterImpl, iter_impl >::value||std::is_same< IterImpl, other_iter_impl >::value), std::nullptr_t > = nullptr>
bool operator!= (const IterImpl &other) const
 comparison: not equal More...
 
reference operator* () const
 return a reference to the value pointed to by the iterator More...
 
iter_impl operator+ (difference_type i) const
 add to iterator More...
 
iter_imploperator++ ()
 pre-increment (++it) More...
 
iter_impl operator++ (int) &
 post-increment (it++) More...
 
iter_imploperator+= (difference_type i)
 add to iterator More...
 
difference_type operator- (const iter_impl &other) const
 return difference More...
 
iter_impl operator- (difference_type i) const
 subtract from iterator More...
 
iter_imploperator-- ()
 pre-decrement (–it) More...
 
iter_impl operator-- (int) &
 post-decrement (it–) More...
 
iter_imploperator-= (difference_type i)
 subtract from iterator More...
 
pointer operator-> () const
 dereference the iterator More...
 
bool operator< (const iter_impl &other) const
 comparison: smaller More...
 
bool operator<= (const iter_impl &other) const
 comparison: less than or equal More...
 
iter_imploperator= (const iter_impl< const BasicJsonType > &other) noexcept
 converting assignment More...
 
iter_imploperator= (const iter_impl< typename std::remove_const< BasicJsonType >::type > &other) noexcept
 converting assignment More...
 
iter_imploperator= (iter_impl &&) noexcept=default
 
template<typename IterImpl , detail::enable_if_t<(std::is_same< IterImpl, iter_impl >::value||std::is_same< IterImpl, other_iter_impl >::value), std::nullptr_t > = nullptr>
bool operator== (const IterImpl &other) const
 comparison: equal More...
 
bool operator> (const iter_impl &other) const
 comparison: greater than More...
 
bool operator>= (const iter_impl &other) const
 comparison: greater than or equal More...
 
reference operator[] (difference_type n) const
 access to successor More...
 
reference value () const
 return the value of an iterator More...
 
 ~iter_impl ()=default
 

Private Types

using array_t = typename BasicJsonType::array_t
 
using object_t = typename BasicJsonType::object_t
 
using other_iter_impl = iter_impl< typename std::conditional< std::is_const< BasicJsonType >::value, typename std::remove_const< BasicJsonType >::type, const BasicJsonType >::type >
 the iterator with BasicJsonType of different const-ness More...
 

Private Member Functions

void set_begin () noexcept
 set the iterator to the first value More...
 
void set_end () noexcept
 set the iterator past the last value More...
 

Private Attributes

friend BasicJsonType
 
friend iteration_proxy< iter_impl >
 
friend iteration_proxy_value< iter_impl >
 
internal_iterator< typename std::remove_const< BasicJsonType >::type > m_it {}
 the actual iterator of the associated instance More...
 
pointer m_object = nullptr
 associated JSON instance More...
 
friend other_iter_impl
 allow basic_json to access private members More...
 

Friends

iter_impl operator+ (difference_type i, const iter_impl &it)
 addition of distance and iterator More...
 

Detailed Description

template<typename BasicJsonType>
class nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >

a template for a bidirectional iterator for the basic_json class This class implements a both iterators (iterator and const_iterator) for the basic_json class.

Note
An iterator is called initialized when a pointer to a JSON value has been set (e.g., by a constructor or a copy assignment). If the iterator is default-constructed, it is uninitialized and most methods are undefined. The library uses assertions to detect calls on uninitialized iterators.** @requirement The class satisfies the following concept requirements:
  • BidirectionalIterator: The iterator that can be moved can be moved in both directions (i.e. incremented and decremented).
Since
version 1.0.0, simplified in version 2.0.9, change to bidirectional iterators in version 3.0.0 (see https://github.com/nlohmann/json/issues/593)

Definition at line 12915 of file json.hpp.

Member Typedef Documentation

◆ array_t

template<typename BasicJsonType >
using nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::array_t = typename BasicJsonType::array_t
private

Definition at line 12926 of file json.hpp.

◆ difference_type

template<typename BasicJsonType >
using nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::difference_type = typename BasicJsonType::difference_type

a type to represent differences between iterators

Definition at line 12946 of file json.hpp.

◆ iterator_category

template<typename BasicJsonType >
using nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::iterator_category = std::bidirectional_iterator_tag

The std::iterator class template (used as a base class to provide typedefs) is deprecated in C++17. The C++ Standard has never required user-defined iterators to derive from std::iterator. A user-defined iterator should provide publicly accessible typedefs named iterator_category, value_type, difference_type, pointer, and reference. Note that value_type is required to be non-const, even for constant iterators.

Definition at line 12941 of file json.hpp.

◆ object_t

template<typename BasicJsonType >
using nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::object_t = typename BasicJsonType::object_t
private

Definition at line 12925 of file json.hpp.

◆ other_iter_impl

template<typename BasicJsonType >
using nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::other_iter_impl = iter_impl<typename std::conditional<std::is_const<BasicJsonType>::value, typename std::remove_const<BasicJsonType>::type, const BasicJsonType>::type>
private

the iterator with BasicJsonType of different const-ness

Definition at line 12918 of file json.hpp.

◆ pointer

template<typename BasicJsonType >
using nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::pointer = typename std::conditional<std::is_const<BasicJsonType>::value, typename BasicJsonType::const_pointer, typename BasicJsonType::pointer>::type

defines a pointer to the type iterated over (value_type)

Definition at line 12948 of file json.hpp.

◆ reference

template<typename BasicJsonType >
using nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::reference = typename std::conditional<std::is_const<BasicJsonType>::value, typename BasicJsonType::const_reference, typename BasicJsonType::reference>::type

defines a reference to the type iterated over (value_type)

Definition at line 12952 of file json.hpp.

◆ value_type

template<typename BasicJsonType >
using nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::value_type = typename BasicJsonType::value_type

the type of the values when the iterator is dereferenced

Definition at line 12944 of file json.hpp.

Constructor & Destructor Documentation

◆ iter_impl() [1/5]

template<typename BasicJsonType >
nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::iter_impl ( )
default

◆ ~iter_impl()

◆ iter_impl() [2/5]

template<typename BasicJsonType >
nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::iter_impl ( iter_impl< BasicJsonType > &&  )
defaultnoexcept

◆ iter_impl() [3/5]

template<typename BasicJsonType >
nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::iter_impl ( pointer  object)
inlineexplicitnoexcept

constructor for a given JSON instance

Parameters
[in]objectpointer to a JSON object for this iterator
Precondition
object != nullptr
Postcondition
The iterator is initialized; i.e. m_object != nullptr.

Definition at line 12968 of file json.hpp.

References JSON_ASSERT.

◆ iter_impl() [4/5]

template<typename BasicJsonType >
nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::iter_impl ( const iter_impl< const BasicJsonType > &  other)
inlinenoexcept

const copy constructor

Note
The conventional copy constructor and copy assignment are implicitly defined. Combined with the following converting constructor and assignment, they support: (1) copy from iterator to iterator, (2) copy from const iterator to const iterator, and (3) conversion from iterator to const iterator. However conversion from const iterator to iterator is not defined.
Parameters
[in]otherconst iterator to copy from
Note
This copy constructor had to be defined explicitly to circumvent a bug occurring on msvc v19.0 compiler (VS 2015) debug build. For more information refer to: https://github.com/nlohmann/json/issues/1608

Definition at line 13018 of file json.hpp.

◆ iter_impl() [5/5]

template<typename BasicJsonType >
nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::iter_impl ( const iter_impl< typename std::remove_const< BasicJsonType >::type > &  other)
inlinenoexcept

converting constructor

Parameters
[in]othernon-const iterator to copy from
Note
It is not checked whether other is initialized.

Definition at line 13043 of file json.hpp.

Member Function Documentation

◆ key()

template<typename BasicJsonType >
const object_t::key_type & nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::key ( ) const
inline

return the key of an object iterator

Precondition
The iterator is initialized; i.e. m_object != nullptr.

Definition at line 13590 of file json.hpp.

References JSON_ASSERT, JSON_HEDLEY_LIKELY, and JSON_THROW.

◆ operator!=()

template<typename BasicJsonType >
template<typename IterImpl , detail::enable_if_t<(std::is_same< IterImpl, iter_impl >::value||std::is_same< IterImpl, other_iter_impl >::value), std::nullptr_t > = nullptr>
bool nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::operator!= ( const IterImpl &  other) const
inline

comparison: not equal

Precondition
The iterator is initialized; i.e. m_object != nullptr.

Definition at line 13373 of file json.hpp.

References nlohmann::json_abi_v3_11_3::operator==().

◆ operator*()

template<typename BasicJsonType >
reference nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::operator* ( ) const
inline

return a reference to the value pointed to by the iterator

Precondition
The iterator is initialized; i.e. m_object != nullptr.

Definition at line 13148 of file json.hpp.

References JSON_ASSERT, JSON_HEDLEY_LIKELY, and JSON_THROW.

◆ operator+()

add to iterator

Precondition
The iterator is initialized; i.e. m_object != nullptr.

Definition at line 13490 of file json.hpp.

◆ operator++() [1/2]

pre-increment (++it)

Precondition
The iterator is initialized; i.e. m_object != nullptr.

Definition at line 13245 of file json.hpp.

References JSON_ASSERT.

◆ operator++() [2/2]

template<typename BasicJsonType >
iter_impl nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::operator++ ( int  ) &
inline

post-increment (it++)

Precondition
The iterator is initialized; i.e. m_object != nullptr.

Definition at line 13234 of file json.hpp.

◆ operator+=()

add to iterator

Precondition
The iterator is initialized; i.e. m_object != nullptr.

Definition at line 13444 of file json.hpp.

References JSON_ASSERT, and JSON_THROW.

◆ operator-() [1/2]

◆ operator-() [2/2]

subtract from iterator

Precondition
The iterator is initialized; i.e. m_object != nullptr.

Definition at line 13512 of file json.hpp.

◆ operator--() [1/2]

pre-decrement (–it)

Precondition
The iterator is initialized; i.e. m_object != nullptr.

Definition at line 13296 of file json.hpp.

References JSON_ASSERT.

◆ operator--() [2/2]

template<typename BasicJsonType >
iter_impl nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::operator-- ( int  ) &
inline

post-decrement (it–)

Precondition
The iterator is initialized; i.e. m_object != nullptr.

Definition at line 13285 of file json.hpp.

◆ operator-=()

subtract from iterator

Precondition
The iterator is initialized; i.e. m_object != nullptr.

Definition at line 13481 of file json.hpp.

◆ operator->()

template<typename BasicJsonType >
pointer nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::operator-> ( ) const
inline

dereference the iterator

Precondition
The iterator is initialized; i.e. m_object != nullptr.

Definition at line 13192 of file json.hpp.

References JSON_ASSERT, JSON_HEDLEY_LIKELY, and JSON_THROW.

◆ operator<()

◆ operator<=()

template<typename BasicJsonType >
bool nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::operator<= ( const iter_impl< BasicJsonType > &  other) const
inline

comparison: less than or equal

Precondition
The iterator is initialized; i.e. m_object != nullptr.

Definition at line 13417 of file json.hpp.

◆ operator=() [1/3]

template<typename BasicJsonType >
iter_impl & nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::operator= ( const iter_impl< const BasicJsonType > &  other)
inlinenoexcept

converting assignment

Parameters
[in]otherconst iterator to copy from
Returns
const/non-const iterator
Note
It is not checked whether other is initialized.

Definition at line 13028 of file json.hpp.

References nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::m_object.

◆ operator=() [2/3]

template<typename BasicJsonType >
iter_impl & nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::operator= ( const iter_impl< typename std::remove_const< BasicJsonType >::type > &  other)
inlinenoexcept

converting assignment

Parameters
[in]othernon-const iterator to copy from
Returns
const/non-const iterator
Note
It is not checked whether other is initialized.

Definition at line 13053 of file json.hpp.

References nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::m_object.

◆ operator=() [3/3]

template<typename BasicJsonType >
iter_impl & nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::operator= ( iter_impl< BasicJsonType > &&  )
defaultnoexcept

◆ operator==()

template<typename BasicJsonType >
template<typename IterImpl , detail::enable_if_t<(std::is_same< IterImpl, iter_impl >::value||std::is_same< IterImpl, other_iter_impl >::value), std::nullptr_t > = nullptr>
bool nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::operator== ( const IterImpl &  other) const
inline

comparison: equal

Precondition
The iterator is initialized; i.e. m_object != nullptr.

Definition at line 13337 of file json.hpp.

References JSON_ASSERT, JSON_HEDLEY_UNLIKELY, and JSON_THROW.

◆ operator>()

template<typename BasicJsonType >
bool nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::operator> ( const iter_impl< BasicJsonType > &  other) const
inline

comparison: greater than

Precondition
The iterator is initialized; i.e. m_object != nullptr.

Definition at line 13426 of file json.hpp.

References SLHAea::operator<=().

◆ operator>=()

template<typename BasicJsonType >
bool nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::operator>= ( const iter_impl< BasicJsonType > &  other) const
inline

comparison: greater than or equal

Precondition
The iterator is initialized; i.e. m_object != nullptr.

Definition at line 13435 of file json.hpp.

References nlohmann::json_abi_v3_11_3::operator<().

◆ operator[]()

access to successor

Precondition
The iterator is initialized; i.e. m_object != nullptr.

Definition at line 13552 of file json.hpp.

References JSON_ASSERT, JSON_HEDLEY_LIKELY, and JSON_THROW.

◆ set_begin()

template<typename BasicJsonType >
void nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::set_begin ( )
inlineprivatenoexcept

set the iterator to the first value

Precondition
The iterator is initialized; i.e. m_object != nullptr.

Definition at line 13065 of file json.hpp.

References JSON_ASSERT.

◆ set_end()

template<typename BasicJsonType >
void nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::set_end ( )
inlineprivatenoexcept

set the iterator past the last value

Precondition
The iterator is initialized; i.e. m_object != nullptr.

Definition at line 13109 of file json.hpp.

References JSON_ASSERT.

◆ value()

return the value of an iterator

Precondition
The iterator is initialized; i.e. m_object != nullptr.

Definition at line 13606 of file json.hpp.

References flexiblesusy::operator*().

Friends And Related Function Documentation

◆ operator+

template<typename BasicJsonType >
iter_impl operator+ ( difference_type  i,
const iter_impl< BasicJsonType > &  it 
)
friend

addition of distance and iterator

Precondition
The iterator is initialized; i.e. m_object != nullptr.

Definition at line 13501 of file json.hpp.

Member Data Documentation

◆ BasicJsonType

template<typename BasicJsonType >
friend nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::BasicJsonType
private

Definition at line 12921 of file json.hpp.

◆ iteration_proxy< iter_impl >

template<typename BasicJsonType >
friend nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::iteration_proxy< iter_impl >
private

Definition at line 12922 of file json.hpp.

◆ iteration_proxy_value< iter_impl >

template<typename BasicJsonType >
friend nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::iteration_proxy_value< iter_impl >
private

Definition at line 12923 of file json.hpp.

◆ m_it

template<typename BasicJsonType >
internal_iterator<typename std::remove_const<BasicJsonType>::type> nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::m_it {}
private

◆ m_object

◆ other_iter_impl

template<typename BasicJsonType >
friend nlohmann::json_abi_v3_11_3::detail::iter_impl< BasicJsonType >::other_iter_impl
private

allow basic_json to access private members

Definition at line 12920 of file json.hpp.


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