SAX implementation to create a JSON value from SAX events. More...

#include <json.hpp>

Public Types
using	number_integer_t = typename BasicJsonType::number_integer_t

using	number_unsigned_t = typename BasicJsonType::number_unsigned_t

using	number_float_t = typename BasicJsonType::number_float_t

using	string_t = typename BasicJsonType::string_t

Public Member Functions
	json_sax_dom_parser (BasicJsonType &r, const bool allow_exceptions_=true)

bool	null ()

bool	boolean (bool val)

bool	number_integer (number_integer_t val)

bool	number_unsigned (number_unsigned_t val)

bool	number_float (number_float_t val, const string_t &)

bool	string (string_t &val)

bool	start_object (std::size_t len)

bool	key (string_t &val)

bool	end_object ()

bool	start_array (std::size_t len)

bool	end_array ()

bool	parse_error (std::size_t, const std::string &, const detail::exception &ex)

constexpr bool	is_errored () const

Private Member Functions
template<typename Value >
BasicJsonType *	handle_value (Value &&v)

Private Attributes
BasicJsonType &	root
	the parsed JSON value More...

std::vector< BasicJsonType * >	ref_stack
	stack to model hierarchy of values More...

BasicJsonType *	object_element = nullptr
	helper to hold the reference for the next object element More...

bool	errored = false
	whether a syntax error occurred More...

const bool	allow_exceptions = true
	whether to throw exceptions in case of errors More...

Detailed Description

template<typename BasicJsonType>
class nlohmann::detail::json_sax_dom_parser< BasicJsonType >

SAX implementation to create a JSON value from SAX events.

This class implements the json_sax interface and processes the SAX events to create a JSON value which makes it basically a DOM parser. The structure or hierarchy of the JSON value is managed by the stack ref_stack which contains a pointer to the respective array or object for each recursion depth.

After successful parsing, the value that is passed by reference to the constructor contains the parsed value.

Template Parameters

BasicJsonType the JSON type

Definition at line 4260 of file json.hpp.

Member Typedef Documentation

template<typename BasicJsonType>

using nlohmann::detail::json_sax_dom_parser< BasicJsonType >::number_float_t = typename BasicJsonType::number_float_t

Definition at line 4265 of file json.hpp.

template<typename BasicJsonType>

using nlohmann::detail::json_sax_dom_parser< BasicJsonType >::number_integer_t = typename BasicJsonType::number_integer_t

Definition at line 4263 of file json.hpp.

template<typename BasicJsonType>

using nlohmann::detail::json_sax_dom_parser< BasicJsonType >::number_unsigned_t = typename BasicJsonType::number_unsigned_t

Definition at line 4264 of file json.hpp.

template<typename BasicJsonType>

using nlohmann::detail::json_sax_dom_parser< BasicJsonType >::string_t = typename BasicJsonType::string_t

Definition at line 4266 of file json.hpp.

Constructor & Destructor Documentation

template<typename BasicJsonType>

nlohmann::detail::json_sax_dom_parser< BasicJsonType >::json_sax_dom_parser	(	BasicJsonType &	r,
		const bool	allow_exceptions_ = `true`
	)

inlineexplicit

Parameters

[in,out]	r	reference to a JSON value that is manipulated while parsing
[in]	allow_exceptions_	whether parse errors yield exceptions

Definition at line 4273 of file json.hpp.

4274 : root(r), allow_exceptions(allow_exceptions_)

4275 {}

nlohmann::detail::json_sax_dom_parser::root

BasicJsonType & root

the parsed JSON value

Definition: json.hpp:4423

nlohmann::detail::json_sax_dom_parser::allow_exceptions

const bool allow_exceptions

whether to throw exceptions in case of errors

Definition: json.hpp:4431

Member Function Documentation

template<typename BasicJsonType>

bool nlohmann::detail::json_sax_dom_parser< BasicJsonType >::boolean ( bool val )

inline

Definition at line 4283 of file json.hpp.

     {
         handle_value(val);
         return true;
     }

template<typename BasicJsonType>

bool nlohmann::detail::json_sax_dom_parser< BasicJsonType >::end_array ( )

inline

Definition at line 4352 of file json.hpp.

     {
         ref_stack.pop_back();
         return true;
     }

template<typename BasicJsonType>

bool nlohmann::detail::json_sax_dom_parser< BasicJsonType >::end_object ( )

inline

Definition at line 4333 of file json.hpp.

     {
         ref_stack.pop_back();
         return true;
     }

template<typename BasicJsonType>

template<typename Value >

BasicJsonType* nlohmann::detail::json_sax_dom_parser< BasicJsonType >::handle_value ( Value && v )

inlineprivate

Invariant: If the ref stack is empty, then the passed value will be the new root.; If the ref stack contains a value, then it is an array or an object to which we can add elements

Definition at line 4399 of file json.hpp.

References run_pk_param_space::root.

     {
         if (ref_stack.empty())
         {
             root = BasicJsonType(std::forward<Value>(v));
             return &root;
         }
 
         assert(ref_stack.back()->is_array() or ref_stack.back()->is_object());
 
         if (ref_stack.back()->is_array())
         {
             ref_stack.back()->m_value.array->emplace_back(std::forward<Value>(v));
             return &(ref_stack.back()->m_value.array->back());
         }
         else
         {
             assert(object_element);
             *object_element = BasicJsonType(std::forward<Value>(v));
             return object_element;
         }
     }

template<typename BasicJsonType>

constexpr bool nlohmann::detail::json_sax_dom_parser< BasicJsonType >::is_errored ( ) const

inline

Definition at line 4386 of file json.hpp.

Referenced by nlohmann::detail::parser< BasicJsonType >::parse().

     {
         return errored;
     }

template<typename BasicJsonType>

bool nlohmann::detail::json_sax_dom_parser< BasicJsonType >::key ( string_t & val )

inline

Definition at line 4326 of file json.hpp.

     {
         // add null at given key and store the reference for later
         object_element = &(ref_stack.back()->m_value.object->operator[](val));
         return true;
     }

template<typename BasicJsonType>

bool nlohmann::detail::json_sax_dom_parser< BasicJsonType >::null ( )

inline

Definition at line 4277 of file json.hpp.

     {
         handle_value(nullptr);
         return true;
     }

template<typename BasicJsonType>

bool nlohmann::detail::json_sax_dom_parser< BasicJsonType >::number_float	(	number_float_t	val,
		const string_t &
	)

inline

Definition at line 4301 of file json.hpp.

     {
         handle_value(val);
         return true;
     }

template<typename BasicJsonType>

bool nlohmann::detail::json_sax_dom_parser< BasicJsonType >::number_integer ( number_integer_t val )

inline

Definition at line 4289 of file json.hpp.

     {
         handle_value(val);
         return true;
     }

template<typename BasicJsonType>

bool nlohmann::detail::json_sax_dom_parser< BasicJsonType >::number_unsigned ( number_unsigned_t val )

inline

Definition at line 4295 of file json.hpp.

     {
         handle_value(val);
         return true;
     }

template<typename BasicJsonType>

bool nlohmann::detail::json_sax_dom_parser< BasicJsonType >::parse_error	(	std::size_t	,
		const std::string &	,
		const detail::exception &	ex
	)

inline

Definition at line 4358 of file json.hpp.

References nlohmann::detail::exception::id, and JSON_THROW.

Referenced by nlohmann::detail::parser< BasicJsonType >::parse().

     {
         errored = true;
         if (allow_exceptions)
         {
             // determine the proper exception type from the id
             switch ((ex.id / 100) % 100)
             {
                 case 1:
                     JSON_THROW(*reinterpret_cast<const detail::parse_error*>(&ex));
                 case 4:
                     JSON_THROW(*reinterpret_cast<const detail::out_of_range*>(&ex));
                 // LCOV_EXCL_START
                 case 2:
                     JSON_THROW(*reinterpret_cast<const detail::invalid_iterator*>(&ex));
                 case 3:
                     JSON_THROW(*reinterpret_cast<const detail::type_error*>(&ex));
                 case 5:
                     JSON_THROW(*reinterpret_cast<const detail::other_error*>(&ex));
                 default:
                     assert(false);
                     // LCOV_EXCL_STOP
             }
         }
         return false;
     }

template<typename BasicJsonType>

bool nlohmann::detail::json_sax_dom_parser< BasicJsonType >::start_array ( std::size_t len )

inline

Definition at line 4339 of file json.hpp.

References nlohmann::detail::out_of_range::create(), JSON_THROW, and JSON_UNLIKELY.

     {
         ref_stack.push_back(handle_value(BasicJsonType::value_t::array));
 
         if (JSON_UNLIKELY(len != std::size_t(-1) and len > ref_stack.back()->max_size()))
         {
             JSON_THROW(out_of_range::create(408,
                                             "excessive array size: " + std::to_string(len)));
         }
 
         return true;
     }

template<typename BasicJsonType>

bool nlohmann::detail::json_sax_dom_parser< BasicJsonType >::start_object ( std::size_t len )

inline

Definition at line 4313 of file json.hpp.

References nlohmann::detail::out_of_range::create(), JSON_THROW, and JSON_UNLIKELY.

     {
         ref_stack.push_back(handle_value(BasicJsonType::value_t::object));
 
         if (JSON_UNLIKELY(len != std::size_t(-1) and len > ref_stack.back()->max_size()))
         {
             JSON_THROW(out_of_range::create(408,
                                             "excessive object size: " + std::to_string(len)));
         }
 
         return true;
     }

template<typename BasicJsonType>

bool nlohmann::detail::json_sax_dom_parser< BasicJsonType >::string ( string_t & val )

inline

Definition at line 4307 of file json.hpp.

     {
         handle_value(val);
         return true;
     }

Member Data Documentation

template<typename BasicJsonType>

const bool nlohmann::detail::json_sax_dom_parser< BasicJsonType >::allow_exceptions = true

private

whether to throw exceptions in case of errors

Definition at line 4431 of file json.hpp.

template<typename BasicJsonType>

bool nlohmann::detail::json_sax_dom_parser< BasicJsonType >::errored = false

private

whether a syntax error occurred

Definition at line 4429 of file json.hpp.

template<typename BasicJsonType>

BasicJsonType* nlohmann::detail::json_sax_dom_parser< BasicJsonType >::object_element = nullptr

private

helper to hold the reference for the next object element

Definition at line 4427 of file json.hpp.

template<typename BasicJsonType>

std::vector<BasicJsonType*> nlohmann::detail::json_sax_dom_parser< BasicJsonType >::ref_stack

private

stack to model hierarchy of values

Definition at line 4425 of file json.hpp.

template<typename BasicJsonType>

BasicJsonType& nlohmann::detail::json_sax_dom_parser< BasicJsonType >::root

private

the parsed JSON value

Definition at line 4423 of file json.hpp.

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

src/3party/JSON/json.hpp

Public Types

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

template<typename BasicJsonType> class nlohmann::detail::json_sax_dom_parser< BasicJsonType >

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation

template<typename BasicJsonType>
class nlohmann::detail::json_sax_dom_parser< BasicJsonType >