diff --git a/doc/mkdocs/docs/api/basic_json/at.md b/doc/mkdocs/docs/api/basic_json/at.md index 75977b180..ea15ce442 100644 --- a/doc/mkdocs/docs/api/basic_json/at.md +++ b/doc/mkdocs/docs/api/basic_json/at.md @@ -14,8 +14,8 @@ reference at(const json_pointer& ptr); const_reference at(const json_pointer& ptr) const; ``` -1. Returns a reference to the element at specified location `idx`, with bounds checking. -2. Returns a reference to the element at with specified key `key`, with bounds checking. +1. Returns a reference to the array element at specified location `idx`, with bounds checking. +2. Returns a reference to the object element at with specified key `key`, with bounds checking. 3. Returns a reference to the element at with specified JSON pointer `ptr`, with bounds checking. ## Parameters @@ -74,7 +74,7 @@ Strong exception safety: if an exception occurs, the original value stays intact ## Example -??? example +??? example "Example: (1) access specified array element with bounds checking" The example below shows how array elements can be read and written using `at()`. It also demonstrates the different exceptions that can be thrown. @@ -89,7 +89,7 @@ Strong exception safety: if an exception occurs, the original value stays intact --8<-- "examples/at__size_type.output" ``` -??? example +??? example "Example: (1) access specified array element with bounds checking" The example below shows how array elements can be read using `at()`. It also demonstrates the different exceptions that can be thrown. @@ -104,7 +104,7 @@ Strong exception safety: if an exception occurs, the original value stays intact --8<-- "examples/at__size_type_const.output" ``` -??? example +??? example "Example: (2) access specified object element with bounds checking" The example below shows how object elements can be read and written using `at()`. It also demonstrates the different exceptions that can be thrown. @@ -119,7 +119,7 @@ Strong exception safety: if an exception occurs, the original value stays intact --8<-- "examples/at__object_t_key_type.output" ``` -??? example +??? example "Example (2) access specified object element with bounds checking" The example below shows how object elements can be read using `at()`. It also demonstrates the different exceptions that can be thrown. @@ -134,7 +134,7 @@ Strong exception safety: if an exception occurs, the original value stays intact --8<-- "examples/at__object_t_key_type_const.output" ``` -??? example +??? example "Example (3) access specified element via JSON Pointer" The example below shows how object elements can be read and written using `at()`. It also demonstrates the different exceptions that can be thrown. @@ -149,7 +149,7 @@ Strong exception safety: if an exception occurs, the original value stays intact --8<-- "examples/at_json_pointer.output" ``` -??? example +??? example "Example (3) access specified element via JSON Pointer" The example below shows how object elements can be read using `at()`. It also demonstrates the different exceptions that can be thrown. diff --git a/doc/mkdocs/docs/api/basic_json/operator[].md b/doc/mkdocs/docs/api/basic_json/operator[].md index 4b36f1a91..9075b8c4b 100644 --- a/doc/mkdocs/docs/api/basic_json/operator[].md +++ b/doc/mkdocs/docs/api/basic_json/operator[].md @@ -18,8 +18,8 @@ reference operator[](const json_pointer& ptr); const_reference operator[](const json_pointer& ptr) const; ``` -1. Returns a reference to the element at specified location `idx`. -2. Returns a reference to the element at with specified key `key`. +1. Returns a reference to the array element at specified location `idx`. +2. Returns a reference to the object element at with specified key `key`. 3. Returns a reference to the element at with specified JSON pointer `ptr`. ## Template parameters @@ -99,7 +99,7 @@ Strong exception safety: if an exception occurs, the original value stays intact ## Example -??? example +??? example "Example (1): access specified array element" The example below shows how array elements can be read and written using `[]` operator. Note the addition of `#!json null` values. @@ -114,7 +114,7 @@ Strong exception safety: if an exception occurs, the original value stays intact --8<-- "examples/operatorarray__size_type.output" ``` -??? example +??? example "Example (1): access specified array element" The example below shows how array elements can be read using the `[]` operator. @@ -128,7 +128,7 @@ Strong exception safety: if an exception occurs, the original value stays intact --8<-- "examples/operatorarray__size_type_const.output" ``` -??? example +??? example "Example (2): access specified object element" The example below shows how object elements can be read and written using the `[]` operator. @@ -142,7 +142,7 @@ Strong exception safety: if an exception occurs, the original value stays intact --8<-- "examples/operatorarray__key_type.output" ``` -??? example +??? example "Example (2): access specified object element" The example below shows how object elements can be read using the `[]` operator. @@ -156,7 +156,7 @@ Strong exception safety: if an exception occurs, the original value stays intact --8<-- "examples/operatorarray__key_type_const.output" ``` -??? example +??? example "Example (3): access specified element via JSON Pointer" The example below shows how values can be read and written using JSON Pointers. @@ -170,7 +170,7 @@ Strong exception safety: if an exception occurs, the original value stays intact --8<-- "examples/operatorjson_pointer.output" ``` -??? example +??? example "Example (3): access specified element via JSON Pointer" The example below shows how values can be read using JSON Pointers. diff --git a/include/nlohmann/json.hpp b/include/nlohmann/json.hpp index 4541e5542..9b9f73b9e 100644 --- a/include/nlohmann/json.hpp +++ b/include/nlohmann/json.hpp @@ -2067,32 +2067,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec /// Access to the JSON value. /// @{ - /*! - @brief access specified array element with bounds checking - - Returns a reference to the element at specified location @a idx, with - bounds checking. - - @param[in] idx index of the element to access - - @return reference to the element at index @a idx - - @throw type_error.304 if the JSON value is not an array; in this case, - calling `at` with an index makes no sense. See example below. - @throw out_of_range.401 if the index @a idx is out of range of the array; - that is, `idx >= size()`. See example below. - - @exceptionsafety Strong guarantee: if an exception is thrown, there are no - changes in the JSON value. - - @complexity Constant. - - @since version 1.0.0 - - @liveexample{The example below shows how array elements can be read and - written using `at()`. It also demonstrates the different exceptions that - can be thrown.,at__size_type} - */ + /// @brief access specified array element with bounds checking + /// @sa https://json.nlohmann.me/api/basic_json/at/ reference at(size_type idx) { // at only works for arrays @@ -2114,32 +2090,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec } } - /*! - @brief access specified array element with bounds checking - - Returns a const reference to the element at specified location @a idx, - with bounds checking. - - @param[in] idx index of the element to access - - @return const reference to the element at index @a idx - - @throw type_error.304 if the JSON value is not an array; in this case, - calling `at` with an index makes no sense. See example below. - @throw out_of_range.401 if the index @a idx is out of range of the array; - that is, `idx >= size()`. See example below. - - @exceptionsafety Strong guarantee: if an exception is thrown, there are no - changes in the JSON value. - - @complexity Constant. - - @since version 1.0.0 - - @liveexample{The example below shows how array elements can be read using - `at()`. It also demonstrates the different exceptions that can be thrown., - at__size_type_const} - */ + /// @brief access specified array element with bounds checking + /// @sa https://json.nlohmann.me/api/basic_json/at/ const_reference at(size_type idx) const { // at only works for arrays @@ -2161,36 +2113,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec } } - /*! - @brief access specified object element with bounds checking - - Returns a reference to the element at with specified key @a key, with - bounds checking. - - @param[in] key key of the element to access - - @return reference to the element at key @a key - - @throw type_error.304 if the JSON value is not an object; in this case, - calling `at` with a key makes no sense. See example below. - @throw out_of_range.403 if the key @a key is is not stored in the object; - that is, `find(key) == end()`. See example below. - - @exceptionsafety Strong guarantee: if an exception is thrown, there are no - changes in the JSON value. - - @complexity Logarithmic in the size of the container. - - @sa see @ref operator[](const typename object_t::key_type&) for unchecked - access by reference - @sa see @ref value() for access by value with a default value - - @since version 1.0.0 - - @liveexample{The example below shows how object elements can be read and - written using `at()`. It also demonstrates the different exceptions that - can be thrown.,at__object_t_key_type} - */ + /// @brief access specified object element with bounds checking + /// @sa https://json.nlohmann.me/api/basic_json/at/ reference at(const typename object_t::key_type& key) { // at only works for objects @@ -2212,36 +2136,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec } } - /*! - @brief access specified object element with bounds checking - - Returns a const reference to the element at with specified key @a key, - with bounds checking. - - @param[in] key key of the element to access - - @return const reference to the element at key @a key - - @throw type_error.304 if the JSON value is not an object; in this case, - calling `at` with a key makes no sense. See example below. - @throw out_of_range.403 if the key @a key is is not stored in the object; - that is, `find(key) == end()`. See example below. - - @exceptionsafety Strong guarantee: if an exception is thrown, there are no - changes in the JSON value. - - @complexity Logarithmic in the size of the container. - - @sa see @ref operator[](const typename object_t::key_type&) for unchecked - access by reference - @sa see @ref value() for access by value with a default value - - @since version 1.0.0 - - @liveexample{The example below shows how object elements can be read using - `at()`. It also demonstrates the different exceptions that can be thrown., - at__object_t_key_type_const} - */ + /// @brief access specified object element with bounds checking + /// @sa https://json.nlohmann.me/api/basic_json/at/ const_reference at(const typename object_t::key_type& key) const { // at only works for objects @@ -2263,31 +2159,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec } } - /*! - @brief access specified array element - - Returns a reference to the element at specified location @a idx. - - @note If @a idx is beyond the range of the array (i.e., `idx >= size()`), - then the array is silently filled up with `null` values to make `idx` a - valid reference to the last stored element. - - @param[in] idx index of the element to access - - @return reference to the element at index @a idx - - @throw type_error.305 if the JSON value is not an array or null; in that - cases, using the [] operator with an index makes no sense. - - @complexity Constant if @a idx is in the range of the array. Otherwise - linear in `idx - size()`. - - @liveexample{The example below shows how array elements can be read and - written using `[]` operator. Note the addition of `null` - values.,operatorarray__size_type} - - @since version 1.0.0 - */ + /// @brief access specified array element + /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/ reference operator[](size_type idx) { // implicitly convert null value to an empty array @@ -2332,25 +2205,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec JSON_THROW(type_error::create(305, "cannot use operator[] with a numeric argument with " + std::string(type_name()), *this)); } - /*! - @brief access specified array element - - Returns a const reference to the element at specified location @a idx. - - @param[in] idx index of the element to access - - @return const reference to the element at index @a idx - - @throw type_error.305 if the JSON value is not an array; in that case, - using the [] operator with an index makes no sense. - - @complexity Constant. - - @liveexample{The example below shows how array elements can be read using - the `[]` operator.,operatorarray__size_type_const} - - @since version 1.0.0 - */ + /// @brief access specified array element + /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/ const_reference operator[](size_type idx) const { // const operator[] only works for arrays @@ -2362,33 +2218,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec JSON_THROW(type_error::create(305, "cannot use operator[] with a numeric argument with " + std::string(type_name()), *this)); } - /*! - @brief access specified object element - - Returns a reference to the element at with specified key @a key. - - @note If @a key is not found in the object, then it is silently added to - the object and filled with a `null` value to make `key` a valid reference. - In case the value was `null` before, it is converted to an object. - - @param[in] key key of the element to access - - @return reference to the element at key @a key - - @throw type_error.305 if the JSON value is not an object or null; in that - cases, using the [] operator with a key makes no sense. - - @complexity Logarithmic in the size of the container. - - @liveexample{The example below shows how object elements can be read and - written using the `[]` operator.,operatorarray__key_type} - - @sa see @ref at(const typename object_t::key_type&) for access by reference - with range checking - @sa see @ref value() for access by value with a default value - - @since version 1.0.0 - */ + /// @brief access specified object element + /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/ reference operator[](const typename object_t::key_type& key) { // implicitly convert null value to an empty object @@ -2408,36 +2239,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec JSON_THROW(type_error::create(305, "cannot use operator[] with a string argument with " + std::string(type_name()), *this)); } - /*! - @brief read-only access specified object element - - Returns a const reference to the element at with specified key @a key. No - bounds checking is performed. - - @warning If the element with key @a key does not exist, the behavior is - undefined. - - @param[in] key key of the element to access - - @return const reference to the element at key @a key - - @pre The element with key @a key must exist. **This precondition is - enforced with an assertion.** - - @throw type_error.305 if the JSON value is not an object; in that case, - using the [] operator with a key makes no sense. - - @complexity Logarithmic in the size of the container. - - @liveexample{The example below shows how object elements can be read using - the `[]` operator.,operatorarray__key_type_const} - - @sa see @ref at(const typename object_t::key_type&) for access by reference - with range checking - @sa see @ref value() for access by value with a default value - - @since version 1.0.0 - */ + /// @brief access specified object element + /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/ const_reference operator[](const typename object_t::key_type& key) const { // const operator[] only works for objects @@ -2450,33 +2253,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec JSON_THROW(type_error::create(305, "cannot use operator[] with a string argument with " + std::string(type_name()), *this)); } - /*! - @brief access specified object element - - Returns a reference to the element at with specified key @a key. - - @note If @a key is not found in the object, then it is silently added to - the object and filled with a `null` value to make `key` a valid reference. - In case the value was `null` before, it is converted to an object. - - @param[in] key key of the element to access - - @return reference to the element at key @a key - - @throw type_error.305 if the JSON value is not an object or null; in that - cases, using the [] operator with a key makes no sense. - - @complexity Logarithmic in the size of the container. - - @liveexample{The example below shows how object elements can be read and - written using the `[]` operator.,operatorarray__key_type} - - @sa see @ref at(const typename object_t::key_type&) for access by reference - with range checking - @sa see @ref value() for access by value with a default value - - @since version 1.1.0 - */ + /// @brief access specified object element + /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/ template JSON_HEDLEY_NON_NULL(2) reference operator[](T* key) @@ -2498,36 +2276,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec JSON_THROW(type_error::create(305, "cannot use operator[] with a string argument with " + std::string(type_name()), *this)); } - /*! - @brief read-only access specified object element - - Returns a const reference to the element at with specified key @a key. No - bounds checking is performed. - - @warning If the element with key @a key does not exist, the behavior is - undefined. - - @param[in] key key of the element to access - - @return const reference to the element at key @a key - - @pre The element with key @a key must exist. **This precondition is - enforced with an assertion.** - - @throw type_error.305 if the JSON value is not an object; in that case, - using the [] operator with a key makes no sense. - - @complexity Logarithmic in the size of the container. - - @liveexample{The example below shows how object elements can be read using - the `[]` operator.,operatorarray__key_type_const} - - @sa see @ref at(const typename object_t::key_type&) for access by reference - with range checking - @sa see @ref value() for access by value with a default value - - @since version 1.1.0 - */ + /// @brief access specified object element + /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/ template JSON_HEDLEY_NON_NULL(2) const_reference operator[](T* key) const @@ -5382,153 +5132,29 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec /// @name JSON Pointer functions /// @{ - /*! - @brief access specified element via JSON Pointer - - Uses a JSON pointer to retrieve a reference to the respective JSON value. - No bound checking is performed. Similar to @ref operator[](const typename - object_t::key_type&), `null` values are created in arrays and objects if - necessary. - - In particular: - - If the JSON pointer points to an object key that does not exist, it - is created an filled with a `null` value before a reference to it - is returned. - - If the JSON pointer points to an array index that does not exist, it - is created an filled with a `null` value before a reference to it - is returned. All indices between the current maximum and the given - index are also filled with `null`. - - The special value `-` is treated as a synonym for the index past the - end. - - @param[in] ptr a JSON pointer - - @return reference to the element pointed to by @a ptr - - @complexity Constant. - - @throw parse_error.106 if an array index begins with '0' - @throw parse_error.109 if an array index was not a number - @throw out_of_range.404 if the JSON pointer can not be resolved - - @liveexample{The behavior is shown in the example.,operatorjson_pointer} - - @since version 2.0.0 - */ + /// @brief access specified element via JSON Pointer + /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/ reference operator[](const json_pointer& ptr) { return ptr.get_unchecked(this); } - /*! - @brief access specified element via JSON Pointer - - Uses a JSON pointer to retrieve a reference to the respective JSON value. - No bound checking is performed. The function does not change the JSON - value; no `null` values are created. In particular, the special value - `-` yields an exception. - - @param[in] ptr JSON pointer to the desired element - - @return const reference to the element pointed to by @a ptr - - @complexity Constant. - - @throw parse_error.106 if an array index begins with '0' - @throw parse_error.109 if an array index was not a number - @throw out_of_range.402 if the array index '-' is used - @throw out_of_range.404 if the JSON pointer can not be resolved - - @liveexample{The behavior is shown in the example.,operatorjson_pointer_const} - - @since version 2.0.0 - */ + /// @brief access specified element via JSON Pointer + /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/ const_reference operator[](const json_pointer& ptr) const { return ptr.get_unchecked(this); } - /*! - @brief access specified element via JSON Pointer - - Returns a reference to the element at with specified JSON pointer @a ptr, - with bounds checking. - - @param[in] ptr JSON pointer to the desired element - - @return reference to the element pointed to by @a ptr - - @throw parse_error.106 if an array index in the passed JSON pointer @a ptr - begins with '0'. See example below. - - @throw parse_error.109 if an array index in the passed JSON pointer @a ptr - is not a number. See example below. - - @throw out_of_range.401 if an array index in the passed JSON pointer @a ptr - is out of range. See example below. - - @throw out_of_range.402 if the array index '-' is used in the passed JSON - pointer @a ptr. As `at` provides checked access (and no elements are - implicitly inserted), the index '-' is always invalid. See example below. - - @throw out_of_range.403 if the JSON pointer describes a key of an object - which cannot be found. See example below. - - @throw out_of_range.404 if the JSON pointer @a ptr can not be resolved. - See example below. - - @exceptionsafety Strong guarantee: if an exception is thrown, there are no - changes in the JSON value. - - @complexity Constant. - - @since version 2.0.0 - - @liveexample{The behavior is shown in the example.,at_json_pointer} - */ + /// @brief access specified element via JSON Pointer + /// @sa https://json.nlohmann.me/api/basic_json/at/ reference at(const json_pointer& ptr) { return ptr.get_checked(this); } - /*! - @brief access specified element via JSON Pointer - - Returns a const reference to the element at with specified JSON pointer @a - ptr, with bounds checking. - - @param[in] ptr JSON pointer to the desired element - - @return reference to the element pointed to by @a ptr - - @throw parse_error.106 if an array index in the passed JSON pointer @a ptr - begins with '0'. See example below. - - @throw parse_error.109 if an array index in the passed JSON pointer @a ptr - is not a number. See example below. - - @throw out_of_range.401 if an array index in the passed JSON pointer @a ptr - is out of range. See example below. - - @throw out_of_range.402 if the array index '-' is used in the passed JSON - pointer @a ptr. As `at` provides checked access (and no elements are - implicitly inserted), the index '-' is always invalid. See example below. - - @throw out_of_range.403 if the JSON pointer describes a key of an object - which cannot be found. See example below. - - @throw out_of_range.404 if the JSON pointer @a ptr can not be resolved. - See example below. - - @exceptionsafety Strong guarantee: if an exception is thrown, there are no - changes in the JSON value. - - @complexity Constant. - - @since version 2.0.0 - - @liveexample{The behavior is shown in the example.,at_json_pointer_const} - */ + /// @brief access specified element via JSON Pointer + /// @sa https://json.nlohmann.me/api/basic_json/at/ const_reference at(const json_pointer& ptr) const { return ptr.get_checked(this); diff --git a/single_include/nlohmann/json.hpp b/single_include/nlohmann/json.hpp index 3e35229bb..d4926434a 100644 --- a/single_include/nlohmann/json.hpp +++ b/single_include/nlohmann/json.hpp @@ -19568,32 +19568,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec /// Access to the JSON value. /// @{ - /*! - @brief access specified array element with bounds checking - - Returns a reference to the element at specified location @a idx, with - bounds checking. - - @param[in] idx index of the element to access - - @return reference to the element at index @a idx - - @throw type_error.304 if the JSON value is not an array; in this case, - calling `at` with an index makes no sense. See example below. - @throw out_of_range.401 if the index @a idx is out of range of the array; - that is, `idx >= size()`. See example below. - - @exceptionsafety Strong guarantee: if an exception is thrown, there are no - changes in the JSON value. - - @complexity Constant. - - @since version 1.0.0 - - @liveexample{The example below shows how array elements can be read and - written using `at()`. It also demonstrates the different exceptions that - can be thrown.,at__size_type} - */ + /// @brief access specified array element with bounds checking + /// @sa https://json.nlohmann.me/api/basic_json/at/ reference at(size_type idx) { // at only works for arrays @@ -19615,32 +19591,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec } } - /*! - @brief access specified array element with bounds checking - - Returns a const reference to the element at specified location @a idx, - with bounds checking. - - @param[in] idx index of the element to access - - @return const reference to the element at index @a idx - - @throw type_error.304 if the JSON value is not an array; in this case, - calling `at` with an index makes no sense. See example below. - @throw out_of_range.401 if the index @a idx is out of range of the array; - that is, `idx >= size()`. See example below. - - @exceptionsafety Strong guarantee: if an exception is thrown, there are no - changes in the JSON value. - - @complexity Constant. - - @since version 1.0.0 - - @liveexample{The example below shows how array elements can be read using - `at()`. It also demonstrates the different exceptions that can be thrown., - at__size_type_const} - */ + /// @brief access specified array element with bounds checking + /// @sa https://json.nlohmann.me/api/basic_json/at/ const_reference at(size_type idx) const { // at only works for arrays @@ -19662,36 +19614,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec } } - /*! - @brief access specified object element with bounds checking - - Returns a reference to the element at with specified key @a key, with - bounds checking. - - @param[in] key key of the element to access - - @return reference to the element at key @a key - - @throw type_error.304 if the JSON value is not an object; in this case, - calling `at` with a key makes no sense. See example below. - @throw out_of_range.403 if the key @a key is is not stored in the object; - that is, `find(key) == end()`. See example below. - - @exceptionsafety Strong guarantee: if an exception is thrown, there are no - changes in the JSON value. - - @complexity Logarithmic in the size of the container. - - @sa see @ref operator[](const typename object_t::key_type&) for unchecked - access by reference - @sa see @ref value() for access by value with a default value - - @since version 1.0.0 - - @liveexample{The example below shows how object elements can be read and - written using `at()`. It also demonstrates the different exceptions that - can be thrown.,at__object_t_key_type} - */ + /// @brief access specified object element with bounds checking + /// @sa https://json.nlohmann.me/api/basic_json/at/ reference at(const typename object_t::key_type& key) { // at only works for objects @@ -19713,36 +19637,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec } } - /*! - @brief access specified object element with bounds checking - - Returns a const reference to the element at with specified key @a key, - with bounds checking. - - @param[in] key key of the element to access - - @return const reference to the element at key @a key - - @throw type_error.304 if the JSON value is not an object; in this case, - calling `at` with a key makes no sense. See example below. - @throw out_of_range.403 if the key @a key is is not stored in the object; - that is, `find(key) == end()`. See example below. - - @exceptionsafety Strong guarantee: if an exception is thrown, there are no - changes in the JSON value. - - @complexity Logarithmic in the size of the container. - - @sa see @ref operator[](const typename object_t::key_type&) for unchecked - access by reference - @sa see @ref value() for access by value with a default value - - @since version 1.0.0 - - @liveexample{The example below shows how object elements can be read using - `at()`. It also demonstrates the different exceptions that can be thrown., - at__object_t_key_type_const} - */ + /// @brief access specified object element with bounds checking + /// @sa https://json.nlohmann.me/api/basic_json/at/ const_reference at(const typename object_t::key_type& key) const { // at only works for objects @@ -19764,31 +19660,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec } } - /*! - @brief access specified array element - - Returns a reference to the element at specified location @a idx. - - @note If @a idx is beyond the range of the array (i.e., `idx >= size()`), - then the array is silently filled up with `null` values to make `idx` a - valid reference to the last stored element. - - @param[in] idx index of the element to access - - @return reference to the element at index @a idx - - @throw type_error.305 if the JSON value is not an array or null; in that - cases, using the [] operator with an index makes no sense. - - @complexity Constant if @a idx is in the range of the array. Otherwise - linear in `idx - size()`. - - @liveexample{The example below shows how array elements can be read and - written using `[]` operator. Note the addition of `null` - values.,operatorarray__size_type} - - @since version 1.0.0 - */ + /// @brief access specified array element + /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/ reference operator[](size_type idx) { // implicitly convert null value to an empty array @@ -19833,25 +19706,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec JSON_THROW(type_error::create(305, "cannot use operator[] with a numeric argument with " + std::string(type_name()), *this)); } - /*! - @brief access specified array element - - Returns a const reference to the element at specified location @a idx. - - @param[in] idx index of the element to access - - @return const reference to the element at index @a idx - - @throw type_error.305 if the JSON value is not an array; in that case, - using the [] operator with an index makes no sense. - - @complexity Constant. - - @liveexample{The example below shows how array elements can be read using - the `[]` operator.,operatorarray__size_type_const} - - @since version 1.0.0 - */ + /// @brief access specified array element + /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/ const_reference operator[](size_type idx) const { // const operator[] only works for arrays @@ -19863,33 +19719,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec JSON_THROW(type_error::create(305, "cannot use operator[] with a numeric argument with " + std::string(type_name()), *this)); } - /*! - @brief access specified object element - - Returns a reference to the element at with specified key @a key. - - @note If @a key is not found in the object, then it is silently added to - the object and filled with a `null` value to make `key` a valid reference. - In case the value was `null` before, it is converted to an object. - - @param[in] key key of the element to access - - @return reference to the element at key @a key - - @throw type_error.305 if the JSON value is not an object or null; in that - cases, using the [] operator with a key makes no sense. - - @complexity Logarithmic in the size of the container. - - @liveexample{The example below shows how object elements can be read and - written using the `[]` operator.,operatorarray__key_type} - - @sa see @ref at(const typename object_t::key_type&) for access by reference - with range checking - @sa see @ref value() for access by value with a default value - - @since version 1.0.0 - */ + /// @brief access specified object element + /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/ reference operator[](const typename object_t::key_type& key) { // implicitly convert null value to an empty object @@ -19909,36 +19740,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec JSON_THROW(type_error::create(305, "cannot use operator[] with a string argument with " + std::string(type_name()), *this)); } - /*! - @brief read-only access specified object element - - Returns a const reference to the element at with specified key @a key. No - bounds checking is performed. - - @warning If the element with key @a key does not exist, the behavior is - undefined. - - @param[in] key key of the element to access - - @return const reference to the element at key @a key - - @pre The element with key @a key must exist. **This precondition is - enforced with an assertion.** - - @throw type_error.305 if the JSON value is not an object; in that case, - using the [] operator with a key makes no sense. - - @complexity Logarithmic in the size of the container. - - @liveexample{The example below shows how object elements can be read using - the `[]` operator.,operatorarray__key_type_const} - - @sa see @ref at(const typename object_t::key_type&) for access by reference - with range checking - @sa see @ref value() for access by value with a default value - - @since version 1.0.0 - */ + /// @brief access specified object element + /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/ const_reference operator[](const typename object_t::key_type& key) const { // const operator[] only works for objects @@ -19951,33 +19754,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec JSON_THROW(type_error::create(305, "cannot use operator[] with a string argument with " + std::string(type_name()), *this)); } - /*! - @brief access specified object element - - Returns a reference to the element at with specified key @a key. - - @note If @a key is not found in the object, then it is silently added to - the object and filled with a `null` value to make `key` a valid reference. - In case the value was `null` before, it is converted to an object. - - @param[in] key key of the element to access - - @return reference to the element at key @a key - - @throw type_error.305 if the JSON value is not an object or null; in that - cases, using the [] operator with a key makes no sense. - - @complexity Logarithmic in the size of the container. - - @liveexample{The example below shows how object elements can be read and - written using the `[]` operator.,operatorarray__key_type} - - @sa see @ref at(const typename object_t::key_type&) for access by reference - with range checking - @sa see @ref value() for access by value with a default value - - @since version 1.1.0 - */ + /// @brief access specified object element + /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/ template JSON_HEDLEY_NON_NULL(2) reference operator[](T* key) @@ -19999,36 +19777,8 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec JSON_THROW(type_error::create(305, "cannot use operator[] with a string argument with " + std::string(type_name()), *this)); } - /*! - @brief read-only access specified object element - - Returns a const reference to the element at with specified key @a key. No - bounds checking is performed. - - @warning If the element with key @a key does not exist, the behavior is - undefined. - - @param[in] key key of the element to access - - @return const reference to the element at key @a key - - @pre The element with key @a key must exist. **This precondition is - enforced with an assertion.** - - @throw type_error.305 if the JSON value is not an object; in that case, - using the [] operator with a key makes no sense. - - @complexity Logarithmic in the size of the container. - - @liveexample{The example below shows how object elements can be read using - the `[]` operator.,operatorarray__key_type_const} - - @sa see @ref at(const typename object_t::key_type&) for access by reference - with range checking - @sa see @ref value() for access by value with a default value - - @since version 1.1.0 - */ + /// @brief access specified object element + /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/ template JSON_HEDLEY_NON_NULL(2) const_reference operator[](T* key) const @@ -22883,153 +22633,29 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec /// @name JSON Pointer functions /// @{ - /*! - @brief access specified element via JSON Pointer - - Uses a JSON pointer to retrieve a reference to the respective JSON value. - No bound checking is performed. Similar to @ref operator[](const typename - object_t::key_type&), `null` values are created in arrays and objects if - necessary. - - In particular: - - If the JSON pointer points to an object key that does not exist, it - is created an filled with a `null` value before a reference to it - is returned. - - If the JSON pointer points to an array index that does not exist, it - is created an filled with a `null` value before a reference to it - is returned. All indices between the current maximum and the given - index are also filled with `null`. - - The special value `-` is treated as a synonym for the index past the - end. - - @param[in] ptr a JSON pointer - - @return reference to the element pointed to by @a ptr - - @complexity Constant. - - @throw parse_error.106 if an array index begins with '0' - @throw parse_error.109 if an array index was not a number - @throw out_of_range.404 if the JSON pointer can not be resolved - - @liveexample{The behavior is shown in the example.,operatorjson_pointer} - - @since version 2.0.0 - */ + /// @brief access specified element via JSON Pointer + /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/ reference operator[](const json_pointer& ptr) { return ptr.get_unchecked(this); } - /*! - @brief access specified element via JSON Pointer - - Uses a JSON pointer to retrieve a reference to the respective JSON value. - No bound checking is performed. The function does not change the JSON - value; no `null` values are created. In particular, the special value - `-` yields an exception. - - @param[in] ptr JSON pointer to the desired element - - @return const reference to the element pointed to by @a ptr - - @complexity Constant. - - @throw parse_error.106 if an array index begins with '0' - @throw parse_error.109 if an array index was not a number - @throw out_of_range.402 if the array index '-' is used - @throw out_of_range.404 if the JSON pointer can not be resolved - - @liveexample{The behavior is shown in the example.,operatorjson_pointer_const} - - @since version 2.0.0 - */ + /// @brief access specified element via JSON Pointer + /// @sa https://json.nlohmann.me/api/basic_json/operator%5B%5D/ const_reference operator[](const json_pointer& ptr) const { return ptr.get_unchecked(this); } - /*! - @brief access specified element via JSON Pointer - - Returns a reference to the element at with specified JSON pointer @a ptr, - with bounds checking. - - @param[in] ptr JSON pointer to the desired element - - @return reference to the element pointed to by @a ptr - - @throw parse_error.106 if an array index in the passed JSON pointer @a ptr - begins with '0'. See example below. - - @throw parse_error.109 if an array index in the passed JSON pointer @a ptr - is not a number. See example below. - - @throw out_of_range.401 if an array index in the passed JSON pointer @a ptr - is out of range. See example below. - - @throw out_of_range.402 if the array index '-' is used in the passed JSON - pointer @a ptr. As `at` provides checked access (and no elements are - implicitly inserted), the index '-' is always invalid. See example below. - - @throw out_of_range.403 if the JSON pointer describes a key of an object - which cannot be found. See example below. - - @throw out_of_range.404 if the JSON pointer @a ptr can not be resolved. - See example below. - - @exceptionsafety Strong guarantee: if an exception is thrown, there are no - changes in the JSON value. - - @complexity Constant. - - @since version 2.0.0 - - @liveexample{The behavior is shown in the example.,at_json_pointer} - */ + /// @brief access specified element via JSON Pointer + /// @sa https://json.nlohmann.me/api/basic_json/at/ reference at(const json_pointer& ptr) { return ptr.get_checked(this); } - /*! - @brief access specified element via JSON Pointer - - Returns a const reference to the element at with specified JSON pointer @a - ptr, with bounds checking. - - @param[in] ptr JSON pointer to the desired element - - @return reference to the element pointed to by @a ptr - - @throw parse_error.106 if an array index in the passed JSON pointer @a ptr - begins with '0'. See example below. - - @throw parse_error.109 if an array index in the passed JSON pointer @a ptr - is not a number. See example below. - - @throw out_of_range.401 if an array index in the passed JSON pointer @a ptr - is out of range. See example below. - - @throw out_of_range.402 if the array index '-' is used in the passed JSON - pointer @a ptr. As `at` provides checked access (and no elements are - implicitly inserted), the index '-' is always invalid. See example below. - - @throw out_of_range.403 if the JSON pointer describes a key of an object - which cannot be found. See example below. - - @throw out_of_range.404 if the JSON pointer @a ptr can not be resolved. - See example below. - - @exceptionsafety Strong guarantee: if an exception is thrown, there are no - changes in the JSON value. - - @complexity Constant. - - @since version 2.0.0 - - @liveexample{The behavior is shown in the example.,at_json_pointer_const} - */ + /// @brief access specified element via JSON Pointer + /// @sa https://json.nlohmann.me/api/basic_json/at/ const_reference at(const json_pointer& ptr) const { return ptr.get_checked(this);