nlohmann::detail::binary_writer< BasicJsonType, CharType > Class Template Reference

serialization to CBOR and MessagePack values More...

#include <json.hpp>

Public Member Functions
	binary_writer (output_adapter_t< CharType > adapter)
	create a binary writer More...
void	write_bson (const BasicJsonType &j)
void	write_cbor (const BasicJsonType &j)
void	write_msgpack (const BasicJsonType &j)
void	write_ubjson (const BasicJsonType &j, const bool use_count, const bool use_type, const bool add_prefix=true)

Static Public Member Functions
template<typename C = CharType, enable_if_t< std::is_signed< C >::value and std::is_signed< char >::value > * = nullptr>
static constexpr CharType	to_char_type (std::uint8_t x) noexcept
template<typename C = CharType, enable_if_t< std::is_signed< C >::value and std::is_unsigned< char >::value > * = nullptr>
static CharType	to_char_type (std::uint8_t x) noexcept
template<typename C = CharType, enable_if_t< std::is_unsigned< C >::value > * = nullptr>
static constexpr CharType	to_char_type (std::uint8_t x) noexcept
template<typename InputCharType , typename C = CharType, enable_if_t< std::is_signed< C >::value andstd::is_signed< char >::value andstd::is_same< char, typename std::remove_cv< InputCharType >::type >::value > * = nullptr>
static constexpr CharType	to_char_type (InputCharType x) noexcept

Private Types
using	string_t = typename BasicJsonType::string_t

Private Member Functions
void	write_bson_entry_header (const string_t &name, const std::uint8_t element_type)
	Writes the given element_type and name to the output adapter. More...
void	write_bson_boolean (const string_t &name, const bool value)
	Writes a BSON element with key name and boolean value value. More...
void	write_bson_double (const string_t &name, const double value)
	Writes a BSON element with key name and double value value. More...
void	write_bson_string (const string_t &name, const string_t &value)
	Writes a BSON element with key name and string value value. More...
void	write_bson_null (const string_t &name)
	Writes a BSON element with key name and null value. More...
void	write_bson_integer (const string_t &name, const std::int64_t value)
	Writes a BSON element with key name and integer value. More...
void	write_bson_unsigned (const string_t &name, const std::uint64_t value)
	Writes a BSON element with key name and unsigned value. More...
void	write_bson_object_entry (const string_t &name, const typename BasicJsonType::object_t &value)
	Writes a BSON element with key name and object value. More...
void	write_bson_array (const string_t &name, const typename BasicJsonType::array_t &value)
	Writes a BSON element with key name and array value. More...
void	write_bson_element (const string_t &name, const BasicJsonType &j)
	Serializes the JSON value j to BSON and associates it with the key name. More...
void	write_bson_object (const typename BasicJsonType::object_t &value)
template<typename NumberType , typename std::enable_if< std::is_floating_point< NumberType >::value, int >::type = 0>
void	write_number_with_ubjson_prefix (const NumberType n, const bool add_prefix)
template<typename NumberType , typename std::enable_if< std::is_unsigned< NumberType >::value, int >::type = 0>
void	write_number_with_ubjson_prefix (const NumberType n, const bool add_prefix)
template<typename NumberType , typename std::enable_if< std::is_signed< NumberType >::value andnot std::is_floating_point< NumberType >::value, int >::type = 0>
void	write_number_with_ubjson_prefix (const NumberType n, const bool add_prefix)
CharType	ubjson_prefix (const BasicJsonType &j) const noexcept
	determine the type prefix of container values More...
template<typename NumberType , bool OutputIsLittleEndian = false>
void	write_number (const NumberType n)

Static Private Member Functions
static std::size_t	calc_bson_entry_header_size (const string_t &name)
static std::size_t	calc_bson_string_size (const string_t &value)
static std::size_t	calc_bson_integer_size (const std::int64_t value)
static constexpr std::size_t	calc_bson_unsigned_size (const std::uint64_t value) noexcept
static std::size_t	calc_bson_array_size (const typename BasicJsonType::array_t &value)
static std::size_t	calc_bson_element_size (const string_t &name, const BasicJsonType &j)
	Calculates the size necessary to serialize the JSON value j with its name. More...
static std::size_t	calc_bson_object_size (const typename BasicJsonType::object_t &value)
	Calculates the size of the BSON serialization of the given JSON-object j. More...
static constexpr CharType	get_cbor_float_prefix (float)
static constexpr CharType	get_cbor_float_prefix (double)
static constexpr CharType	get_msgpack_float_prefix (float)
static constexpr CharType	get_msgpack_float_prefix (double)
static constexpr CharType	get_ubjson_float_prefix (float)
static constexpr CharType	get_ubjson_float_prefix (double)

Private Attributes
const bool	is_little_endian = binary_reader<BasicJsonType>::little_endianess()
	whether we can assume little endianess More...
output_adapter_t< CharType >	oa = nullptr
	the output More...

Detailed Description

template<typename BasicJsonType, typename CharType>
class nlohmann::detail::binary_writer< BasicJsonType, CharType >

serialization to CBOR and MessagePack values

Definition at line 8344 of file json.hpp.

Member Typedef Documentation

template<typename BasicJsonType , typename CharType >

using nlohmann::detail::binary_writer< BasicJsonType, CharType >::string_t = typename BasicJsonType::string_t

private

Definition at line 8346 of file json.hpp.

Constructor & Destructor Documentation

template<typename BasicJsonType , typename CharType >

nlohmann::detail::binary_writer< BasicJsonType, CharType >::binary_writer ( output_adapter_t< CharType >  adapter )

inlineexplicit

create a binary writer

Parameters

[in]

adapter

output adapter to write to

Definition at line 8354 of file json.hpp.

                                                               : oa(adapter)
    {
        assert(oa);
    }

Member Function Documentation

template<typename BasicJsonType , typename CharType >

static std::size_t nlohmann::detail::binary_writer< BasicJsonType, CharType >::calc_bson_array_size ( const typename BasicJsonType::array_t &  value )

inlinestaticprivate

Returns

The size of the BSON-encoded array value

Definition at line 9185 of file json.hpp.

    {
        std::size_t embedded_document_size = 0ul;
        std::size_t array_index = 0ul;

        for (const auto& el : value)
        {
            embedded_document_size += calc_bson_element_size(std::to_string(array_index++), el);
        }

        return sizeof(std::int32_t) + embedded_document_size + 1ul;
    }

template<typename BasicJsonType , typename CharType >

static std::size_t nlohmann::detail::binary_writer< BasicJsonType, CharType >::calc_bson_element_size ( const string_t &  name, const BasicJsonType &  j  )

inlinestaticprivate

Calculates the size necessary to serialize the JSON value j with its name.

Returns

The calculated size for the BSON document entry for j with the given name.

Definition at line 9221 of file json.hpp.

References nlohmann::detail::array, nlohmann::detail::boolean, nlohmann::detail::null, nlohmann::detail::number_float, nlohmann::detail::number_integer, nlohmann::detail::number_unsigned, nlohmann::detail::object, and nlohmann::detail::string.

    {
        const auto header_size = calc_bson_entry_header_size(name);
        switch (j.type())
        {
            case value_t::object:
                return header_size + calc_bson_object_size(*j.m_value.object);

            case value_t::array:
                return header_size + calc_bson_array_size(*j.m_value.array);

            case value_t::boolean:
                return header_size + 1ul;

            case value_t::number_float:
                return header_size + 8ul;

            case value_t::number_integer:
                return header_size + calc_bson_integer_size(j.m_value.number_integer);

            case value_t::number_unsigned:
                return header_size + calc_bson_unsigned_size(j.m_value.number_unsigned);

            case value_t::string:
                return header_size + calc_bson_string_size(*j.m_value.string);

            case value_t::null:
                return header_size + 0ul;

            // LCOV_EXCL_START
            default:
                assert(false);
                return 0ul;
                // LCOV_EXCL_STOP
        };
    }

template<typename BasicJsonType , typename CharType >

static std::size_t nlohmann::detail::binary_writer< BasicJsonType, CharType >::calc_bson_entry_header_size ( const string_t &  name )

inlinestaticprivate

Returns

The size of a BSON document entry header, including the id marker and the entry name size (and its null-terminator).

Definition at line 9033 of file json.hpp.

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

    {
        const auto it = name.find(static_cast<typename string_t::value_type>(0));
        if (JSON_UNLIKELY(it != BasicJsonType::string_t::npos))
        {
            JSON_THROW(out_of_range::create(409,
                                            "BSON key cannot contain code point U+0000 (at byte " + std::to_string(it) + ")"));
        }

        return /*id*/ 1ul + name.size() + /*zero-terminator*/1u;
    }

template<typename BasicJsonType , typename CharType >

static std::size_t nlohmann::detail::binary_writer< BasicJsonType, CharType >::calc_bson_integer_size ( const std::int64_t  value )

inlinestaticprivate

Returns

The size of the BSON-encoded integer value

Definition at line 9110 of file json.hpp.

References max(), and anonymous_namespace{chameleon.cpp}::min().

    {
        if ((std::numeric_limits<std::int32_t>::min)() <= value and value <= (std::numeric_limits<std::int32_t>::max)())
        {
            return sizeof(std::int32_t);
        }
        else
        {
            return sizeof(std::int64_t);
        }
    }

template<typename BasicJsonType , typename CharType >

static std::size_t nlohmann::detail::binary_writer< BasicJsonType, CharType >::calc_bson_object_size ( const typename BasicJsonType::object_t &  value )

inlinestaticprivate

Calculates the size of the BSON serialization of the given JSON-object j.

Parameters

[in]

j

JSON value to serialize

Precondition

j.type() == value_t::object

Definition at line 9309 of file json.hpp.

    {
        std::size_t document_size = std::accumulate(value.begin(), value.end(), 0ul,
                                    [](size_t result, const typename BasicJsonType::object_t::value_type & el)
        {
            return result += calc_bson_element_size(el.first, el.second);
        });

        return sizeof(std::int32_t) + document_size + 1ul;
    }

template<typename BasicJsonType , typename CharType >

static std::size_t nlohmann::detail::binary_writer< BasicJsonType, CharType >::calc_bson_string_size ( const string_t &  value )

inlinestaticprivate

Returns

The size of the BSON-encoded string in value

Definition at line 9080 of file json.hpp.

    {
        return sizeof(std::int32_t) + value.size() + 1ul;
    }

template<typename BasicJsonType , typename CharType >

static constexpr std::size_t nlohmann::detail::binary_writer< BasicJsonType, CharType >::calc_bson_unsigned_size ( const std::uint64_t  value )

inlinestaticprivatenoexcept

Returns

The size of the BSON-encoded unsigned integer in j

Definition at line 9143 of file json.hpp.

References max(), and Catch::Generators::value().

    {
        return (value <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
               ? sizeof(std::int32_t)
               : sizeof(std::int64_t);
    }

template<typename BasicJsonType , typename CharType >

static constexpr CharType nlohmann::detail::binary_writer< BasicJsonType, CharType >::get_cbor_float_prefix ( float  )

inlinestaticprivate

Definition at line 9340 of file json.hpp.

    {
        return to_char_type(0xFA);  // Single-Precision Float
    }

template<typename BasicJsonType , typename CharType >

static constexpr CharType nlohmann::detail::binary_writer< BasicJsonType, CharType >::get_cbor_float_prefix ( double  )

inlinestaticprivate

Definition at line 9345 of file json.hpp.

    {
        return to_char_type(0xFB);  // Double-Precision Float
    }

template<typename BasicJsonType , typename CharType >

static constexpr CharType nlohmann::detail::binary_writer< BasicJsonType, CharType >::get_msgpack_float_prefix ( float  )

inlinestaticprivate

Definition at line 9354 of file json.hpp.

    {
        return to_char_type(0xCA);  // float 32
    }

template<typename BasicJsonType , typename CharType >

static constexpr CharType nlohmann::detail::binary_writer< BasicJsonType, CharType >::get_msgpack_float_prefix ( double  )

inlinestaticprivate

Definition at line 9359 of file json.hpp.

References Catch::Generators::value().

    {
        return to_char_type(0xCB);  // float 64
    }

template<typename BasicJsonType , typename CharType >

static constexpr CharType nlohmann::detail::binary_writer< BasicJsonType, CharType >::get_ubjson_float_prefix ( float  )

inlinestaticprivate

Definition at line 9568 of file json.hpp.

    {
        return 'd';  // float 32
    }

template<typename BasicJsonType , typename CharType >

static constexpr CharType nlohmann::detail::binary_writer< BasicJsonType, CharType >::get_ubjson_float_prefix ( double  )

inlinestaticprivate

Definition at line 9573 of file json.hpp.

    {
        return 'D';  // float 64
    }

template<typename BasicJsonType , typename CharType >

template<typename C = CharType, enable_if_t< std::is_signed< C >::value and std::is_signed< char >::value > * = nullptr>

static constexpr CharType nlohmann::detail::binary_writer< BasicJsonType, CharType >::to_char_type ( std::uint8_t  x )

inlinestaticnoexcept

Definition at line 9617 of file json.hpp.

References Catch::Generators::value(), and x.

Referenced by nlohmann::detail::serializer< BasicJsonType >::dump_escaped().

    {
        return *reinterpret_cast<char*>(&x);
    }

template<typename BasicJsonType , typename CharType >

template<typename C = CharType, enable_if_t< std::is_signed< C >::value and std::is_unsigned< char >::value > * = nullptr>

static CharType nlohmann::detail::binary_writer< BasicJsonType, CharType >::to_char_type ( std::uint8_t  x )

inlinestaticnoexcept

Definition at line 9624 of file json.hpp.

References Catch::Generators::value(), and x.

    {
        static_assert(sizeof(std::uint8_t) == sizeof(CharType), "size of CharType must be equal to std::uint8_t");
        static_assert(std::is_pod<CharType>::value, "CharType must be POD");
        CharType result;
        std::memcpy(&result, &x, sizeof(x));
        return result;
    }

template<typename BasicJsonType , typename CharType >

template<typename C = CharType, enable_if_t< std::is_unsigned< C >::value > * = nullptr>

static constexpr CharType nlohmann::detail::binary_writer< BasicJsonType, CharType >::to_char_type ( std::uint8_t  x )

inlinestaticnoexcept

Definition at line 9635 of file json.hpp.

References Catch::Generators::value(), and x.

    {
        return x;
    }

template<typename BasicJsonType , typename CharType >

template<typename InputCharType , typename C = CharType, enable_if_t< std::is_signed< C >::value andstd::is_signed< char >::value andstd::is_same< char, typename std::remove_cv< InputCharType >::type >::value > * = nullptr>

static constexpr CharType nlohmann::detail::binary_writer< BasicJsonType, CharType >::to_char_type ( InputCharType  x )

inlinestaticnoexcept

Definition at line 9646 of file json.hpp.

References x.

    {
        return x;
    }

template<typename BasicJsonType , typename CharType >

CharType nlohmann::detail::binary_writer< BasicJsonType, CharType >::ubjson_prefix ( const BasicJsonType &  j ) const

inlineprivatenoexcept

determine the type prefix of container values

Note

This function does not need to be 100% accurate when it comes to integer limits. In case a number exceeds the limits of int64_t, this will be detected by a later call to function write_number_with_ubjson_prefix. Therefore, we return 'L' for any value that does not fit the previous limits.

Definition at line 9497 of file json.hpp.

References nlohmann::detail::array, nlohmann::detail::boolean, max(), anonymous_namespace{chameleon.cpp}::min(), nlohmann::detail::null, nlohmann::detail::number_float, nlohmann::detail::number_integer, nlohmann::detail::number_unsigned, nlohmann::detail::object, and nlohmann::detail::string.

    {
        switch (j.type())
        {
            case value_t::null:
                return 'Z';

            case value_t::boolean:
                return j.m_value.boolean ? 'T' : 'F';

            case value_t::number_integer:
            {
                if ((std::numeric_limits<int8_t>::min)() <= j.m_value.number_integer and j.m_value.number_integer <= (std::numeric_limits<int8_t>::max)())
                {
                    return 'i';
                }
                if ((std::numeric_limits<uint8_t>::min)() <= j.m_value.number_integer and j.m_value.number_integer <= (std::numeric_limits<uint8_t>::max)())
                {
                    return 'U';
                }
                if ((std::numeric_limits<int16_t>::min)() <= j.m_value.number_integer and j.m_value.number_integer <= (std::numeric_limits<int16_t>::max)())
                {
                    return 'I';
                }
                if ((std::numeric_limits<int32_t>::min)() <= j.m_value.number_integer and j.m_value.number_integer <= (std::numeric_limits<int32_t>::max)())
                {
                    return 'l';
                }
                // no check and assume int64_t (see note above)
                return 'L';
            }

            case value_t::number_unsigned:
            {
                if (j.m_value.number_unsigned <= (std::numeric_limits<int8_t>::max)())
                {
                    return 'i';
                }
                if (j.m_value.number_unsigned <= (std::numeric_limits<uint8_t>::max)())
                {
                    return 'U';
                }
                if (j.m_value.number_unsigned <= (std::numeric_limits<int16_t>::max)())
                {
                    return 'I';
                }
                if (j.m_value.number_unsigned <= (std::numeric_limits<int32_t>::max)())
                {
                    return 'l';
                }
                // no check and assume int64_t (see note above)
                return 'L';
            }

            case value_t::number_float:
                return get_ubjson_float_prefix(j.m_value.number_float);

            case value_t::string:
                return 'S';

            case value_t::array:
                return '[';

            case value_t::object:
                return '{';

            default:  // discarded values
                return 'N';
        }
    }

template<typename BasicJsonType , typename CharType >

void nlohmann::detail::binary_writer< BasicJsonType, CharType >::write_bson ( const BasicJsonType &  j )

inline

Parameters

[in]

j

JSON value to serialize

Precondition

j.type() == value_t::object

Definition at line 8363 of file json.hpp.

References nlohmann::detail::type_error::create(), JSON_THROW, nlohmann::detail::object, and nlohmann::detail::string.

    {
        switch (j.type())
        {
            case value_t::object:
            {
                write_bson_object(*j.m_value.object);
                break;
            }

            default:
            {
                JSON_THROW(type_error::create(317, "to serialize to BSON, top-level type must be object, but is " + std::string(j.type_name())));
            }
        }
    }

template<typename BasicJsonType , typename CharType >

void nlohmann::detail::binary_writer< BasicJsonType, CharType >::write_bson_array ( const string_t &  name, const typename BasicJsonType::array_t &  value  )

inlineprivate

Writes a BSON element with key name and array value.

Definition at line 9201 of file json.hpp.

    {
        write_bson_entry_header(name, 0x04); // array
        write_number<std::int32_t, true>(static_cast<std::int32_t>(calc_bson_array_size(value)));

        std::size_t array_index = 0ul;

        for (const auto& el : value)
        {
            write_bson_element(std::to_string(array_index++), el);
        }

        oa->write_character(to_char_type(0x00));
    }

template<typename BasicJsonType , typename CharType >

void nlohmann::detail::binary_writer< BasicJsonType, CharType >::write_bson_boolean ( const string_t &  name, const bool  value  )

inlineprivate

Writes a BSON element with key name and boolean value value.

Definition at line 9060 of file json.hpp.

    {
        write_bson_entry_header(name, 0x08);
        oa->write_character(value ? to_char_type(0x01) : to_char_type(0x00));
    }

template<typename BasicJsonType , typename CharType >

void nlohmann::detail::binary_writer< BasicJsonType, CharType >::write_bson_double ( const string_t &  name, const double  value  )

inlineprivate

Writes a BSON element with key name and double value value.

Definition at line 9070 of file json.hpp.

References Catch::Generators::value().

    {
        write_bson_entry_header(name, 0x01);
        write_number<double, true>(value);
    }

template<typename BasicJsonType , typename CharType >

void nlohmann::detail::binary_writer< BasicJsonType, CharType >::write_bson_element ( const string_t &  name, const BasicJsonType &  j  )

inlineprivate

Serializes the JSON value j to BSON and associates it with the key name.

Parameters

name	The name to associate with the JSON entity j within the current BSON document

Returns

The size of the BSON entry

Definition at line 9266 of file json.hpp.

References nlohmann::detail::array, nlohmann::detail::boolean, nlohmann::detail::null, nlohmann::detail::number_float, nlohmann::detail::number_integer, nlohmann::detail::number_unsigned, nlohmann::detail::object, and nlohmann::detail::string.

    {
        switch (j.type())
        {
            case value_t::object:
                return write_bson_object_entry(name, *j.m_value.object);

            case value_t::array:
                return write_bson_array(name, *j.m_value.array);

            case value_t::boolean:
                return write_bson_boolean(name, j.m_value.boolean);

            case value_t::number_float:
                return write_bson_double(name, j.m_value.number_float);

            case value_t::number_integer:
                return write_bson_integer(name, j.m_value.number_integer);

            case value_t::number_unsigned:
                return write_bson_unsigned(name, j.m_value.number_unsigned);

            case value_t::string:
                return write_bson_string(name, *j.m_value.string);

            case value_t::null:
                return write_bson_null(name);

            // LCOV_EXCL_START
            default:
                assert(false);
                return;
                // LCOV_EXCL_STOP
        };
    }

template<typename BasicJsonType , typename CharType >

void nlohmann::detail::binary_writer< BasicJsonType, CharType >::write_bson_entry_header ( const string_t &  name, const std::uint8_t  element_type  )

inlineprivate

Writes the given element_type and name to the output adapter.

Definition at line 9048 of file json.hpp.

    {
        oa->write_character(to_char_type(element_type)); // boolean
        oa->write_characters(
            reinterpret_cast<const CharType*>(name.c_str()),
            name.size() + 1u);
    }

template<typename BasicJsonType , typename CharType >

void nlohmann::detail::binary_writer< BasicJsonType, CharType >::write_bson_integer ( const string_t &  name, const std::int64_t  value  )

inlineprivate

Writes a BSON element with key name and integer value.

Definition at line 9125 of file json.hpp.

References max(), anonymous_namespace{chameleon.cpp}::min(), and Catch::Generators::value().

    {
        if ((std::numeric_limits<std::int32_t>::min)() <= value and value <= (std::numeric_limits<std::int32_t>::max)())
        {
            write_bson_entry_header(name, 0x10); // int32
            write_number<std::int32_t, true>(static_cast<std::int32_t>(value));
        }
        else
        {
            write_bson_entry_header(name, 0x12); // int64
            write_number<std::int64_t, true>(static_cast<std::int64_t>(value));
        }
    }

template<typename BasicJsonType , typename CharType >

void nlohmann::detail::binary_writer< BasicJsonType, CharType >::write_bson_null ( const string_t &  name )

inlineprivate

Writes a BSON element with key name and null value.

Definition at line 9102 of file json.hpp.

    {
        write_bson_entry_header(name, 0x0A);
    }

template<typename BasicJsonType , typename CharType >

void nlohmann::detail::binary_writer< BasicJsonType, CharType >::write_bson_object ( const typename BasicJsonType::object_t &  value )

inlineprivate

Parameters

[in]

j

JSON value to serialize

Precondition

j.type() == value_t::object

Definition at line 9324 of file json.hpp.

    {
        write_number<std::int32_t, true>(static_cast<std::int32_t>(calc_bson_object_size(value)));

        for (const auto& el : value)
        {
            write_bson_element(el.first, el.second);
        }

        oa->write_character(to_char_type(0x00));
    }

template<typename BasicJsonType , typename CharType >

void nlohmann::detail::binary_writer< BasicJsonType, CharType >::write_bson_object_entry ( const string_t &  name, const typename BasicJsonType::object_t &  value  )

inlineprivate

Writes a BSON element with key name and object value.

Definition at line 9175 of file json.hpp.

    {
        write_bson_entry_header(name, 0x03); // object
        write_bson_object(value);
    }

template<typename BasicJsonType , typename CharType >

void nlohmann::detail::binary_writer< BasicJsonType, CharType >::write_bson_string ( const string_t &  name, const string_t &  value  )

inlineprivate

Writes a BSON element with key name and string value value.

Definition at line 9088 of file json.hpp.

    {
        write_bson_entry_header(name, 0x02);

        write_number<std::int32_t, true>(static_cast<std::int32_t>(value.size() + 1ul));
        oa->write_characters(
            reinterpret_cast<const CharType*>(value.c_str()),
            value.size() + 1);
    }

template<typename BasicJsonType , typename CharType >

void nlohmann::detail::binary_writer< BasicJsonType, CharType >::write_bson_unsigned ( const string_t &  name, const std::uint64_t  value  )

inlineprivate

Writes a BSON element with key name and unsigned value.

Definition at line 9153 of file json.hpp.

References nlohmann::detail::out_of_range::create(), JSON_THROW, max(), and Catch::Generators::value().

    {
        if (value <= static_cast<std::uint64_t>((std::numeric_limits<std::int32_t>::max)()))
        {
            write_bson_entry_header(name, 0x10 /* int32 */);
            write_number<std::int32_t, true>(static_cast<std::int32_t>(value));
        }
        else if (value <= static_cast<std::uint64_t>((std::numeric_limits<std::int64_t>::max)()))
        {
            write_bson_entry_header(name, 0x12 /* int64 */);
            write_number<std::int64_t, true>(static_cast<std::int64_t>(value));
        }
        else
        {
            JSON_THROW(out_of_range::create(407, "integer number " + std::to_string(value) + " cannot be represented by BSON as it does not fit int64"));
        }
    }

template<typename BasicJsonType , typename CharType >

void nlohmann::detail::binary_writer< BasicJsonType, CharType >::write_cbor ( const BasicJsonType &  j )

inline

Parameters

[in]

j

JSON value to serialize

Definition at line 8383 of file json.hpp.

References nlohmann::detail::array, nlohmann::detail::boolean, max(), nlohmann::detail::null, nlohmann::detail::number_float, nlohmann::detail::number_integer, nlohmann::detail::number_unsigned, nlohmann::detail::object, and nlohmann::detail::string.

    {
        switch (j.type())
        {
            case value_t::null:
            {
                oa->write_character(to_char_type(0xF6));
                break;
            }

            case value_t::boolean:
            {
                oa->write_character(j.m_value.boolean
                                    ? to_char_type(0xF5)
                                    : to_char_type(0xF4));
                break;
            }

            case value_t::number_integer:
            {
                if (j.m_value.number_integer >= 0)
                {
                    // CBOR does not differentiate between positive signed
                    // integers and unsigned integers. Therefore, we used the
                    // code from the value_t::number_unsigned case here.
                    if (j.m_value.number_integer <= 0x17)
                    {
                        write_number(static_cast<uint8_t>(j.m_value.number_integer));
                    }
                    else if (j.m_value.number_integer <= (std::numeric_limits<uint8_t>::max)())
                    {
                        oa->write_character(to_char_type(0x18));
                        write_number(static_cast<uint8_t>(j.m_value.number_integer));
                    }
                    else if (j.m_value.number_integer <= (std::numeric_limits<uint16_t>::max)())
                    {
                        oa->write_character(to_char_type(0x19));
                        write_number(static_cast<uint16_t>(j.m_value.number_integer));
                    }
                    else if (j.m_value.number_integer <= (std::numeric_limits<uint32_t>::max)())
                    {
                        oa->write_character(to_char_type(0x1A));
                        write_number(static_cast<uint32_t>(j.m_value.number_integer));
                    }
                    else
                    {
                        oa->write_character(to_char_type(0x1B));
                        write_number(static_cast<uint64_t>(j.m_value.number_integer));
                    }
                }
                else
                {
                    // The conversions below encode the sign in the first
                    // byte, and the value is converted to a positive number.
                    const auto positive_number = -1 - j.m_value.number_integer;
                    if (j.m_value.number_integer >= -24)
                    {
                        write_number(static_cast<uint8_t>(0x20 + positive_number));
                    }
                    else if (positive_number <= (std::numeric_limits<uint8_t>::max)())
                    {
                        oa->write_character(to_char_type(0x38));
                        write_number(static_cast<uint8_t>(positive_number));
                    }
                    else if (positive_number <= (std::numeric_limits<uint16_t>::max)())
                    {
                        oa->write_character(to_char_type(0x39));
                        write_number(static_cast<uint16_t>(positive_number));
                    }
                    else if (positive_number <= (std::numeric_limits<uint32_t>::max)())
                    {
                        oa->write_character(to_char_type(0x3A));
                        write_number(static_cast<uint32_t>(positive_number));
                    }
                    else
                    {
                        oa->write_character(to_char_type(0x3B));
                        write_number(static_cast<uint64_t>(positive_number));
                    }
                }
                break;
            }

            case value_t::number_unsigned:
            {
                if (j.m_value.number_unsigned <= 0x17)
                {
                    write_number(static_cast<uint8_t>(j.m_value.number_unsigned));
                }
                else if (j.m_value.number_unsigned <= (std::numeric_limits<uint8_t>::max)())
                {
                    oa->write_character(to_char_type(0x18));
                    write_number(static_cast<uint8_t>(j.m_value.number_unsigned));
                }
                else if (j.m_value.number_unsigned <= (std::numeric_limits<uint16_t>::max)())
                {
                    oa->write_character(to_char_type(0x19));
                    write_number(static_cast<uint16_t>(j.m_value.number_unsigned));
                }
                else if (j.m_value.number_unsigned <= (std::numeric_limits<uint32_t>::max)())
                {
                    oa->write_character(to_char_type(0x1A));
                    write_number(static_cast<uint32_t>(j.m_value.number_unsigned));
                }
                else
                {
                    oa->write_character(to_char_type(0x1B));
                    write_number(static_cast<uint64_t>(j.m_value.number_unsigned));
                }
                break;
            }

            case value_t::number_float:
            {
                oa->write_character(get_cbor_float_prefix(j.m_value.number_float));
                write_number(j.m_value.number_float);
                break;
            }

            case value_t::string:
            {
                // step 1: write control byte and the string length
                const auto N = j.m_value.string->size();
                if (N <= 0x17)
                {
                    write_number(static_cast<uint8_t>(0x60 + N));
                }
                else if (N <= (std::numeric_limits<uint8_t>::max)())
                {
                    oa->write_character(to_char_type(0x78));
                    write_number(static_cast<uint8_t>(N));
                }
                else if (N <= (std::numeric_limits<uint16_t>::max)())
                {
                    oa->write_character(to_char_type(0x79));
                    write_number(static_cast<uint16_t>(N));
                }
                else if (N <= (std::numeric_limits<uint32_t>::max)())
                {
                    oa->write_character(to_char_type(0x7A));
                    write_number(static_cast<uint32_t>(N));
                }
                // LCOV_EXCL_START
                else if (N <= (std::numeric_limits<uint64_t>::max)())
                {
                    oa->write_character(to_char_type(0x7B));
                    write_number(static_cast<uint64_t>(N));
                }
                // LCOV_EXCL_STOP

                // step 2: write the string
                oa->write_characters(
                    reinterpret_cast<const CharType*>(j.m_value.string->c_str()),
                    j.m_value.string->size());
                break;
            }

            case value_t::array:
            {
                // step 1: write control byte and the array size
                const auto N = j.m_value.array->size();
                if (N <= 0x17)
                {
                    write_number(static_cast<uint8_t>(0x80 + N));
                }
                else if (N <= (std::numeric_limits<uint8_t>::max)())
                {
                    oa->write_character(to_char_type(0x98));
                    write_number(static_cast<uint8_t>(N));
                }
                else if (N <= (std::numeric_limits<uint16_t>::max)())
                {
                    oa->write_character(to_char_type(0x99));
                    write_number(static_cast<uint16_t>(N));
                }
                else if (N <= (std::numeric_limits<uint32_t>::max)())
                {
                    oa->write_character(to_char_type(0x9A));
                    write_number(static_cast<uint32_t>(N));
                }
                // LCOV_EXCL_START
                else if (N <= (std::numeric_limits<uint64_t>::max)())
                {
                    oa->write_character(to_char_type(0x9B));
                    write_number(static_cast<uint64_t>(N));
                }
                // LCOV_EXCL_STOP

                // step 2: write each element
                for (const auto& el : *j.m_value.array)
                {
                    write_cbor(el);
                }
                break;
            }

            case value_t::object:
            {
                // step 1: write control byte and the object size
                const auto N = j.m_value.object->size();
                if (N <= 0x17)
                {
                    write_number(static_cast<uint8_t>(0xA0 + N));
                }
                else if (N <= (std::numeric_limits<uint8_t>::max)())
                {
                    oa->write_character(to_char_type(0xB8));
                    write_number(static_cast<uint8_t>(N));
                }
                else if (N <= (std::numeric_limits<uint16_t>::max)())
                {
                    oa->write_character(to_char_type(0xB9));
                    write_number(static_cast<uint16_t>(N));
                }
                else if (N <= (std::numeric_limits<uint32_t>::max)())
                {
                    oa->write_character(to_char_type(0xBA));
                    write_number(static_cast<uint32_t>(N));
                }
                // LCOV_EXCL_START
                else if (N <= (std::numeric_limits<uint64_t>::max)())
                {
                    oa->write_character(to_char_type(0xBB));
                    write_number(static_cast<uint64_t>(N));
                }
                // LCOV_EXCL_STOP

                // step 2: write each element
                for (const auto& el : *j.m_value.object)
                {
                    write_cbor(el.first);
                    write_cbor(el.second);
                }
                break;
            }

            default:
                break;
        }
    }

template<typename BasicJsonType , typename CharType >

void nlohmann::detail::binary_writer< BasicJsonType, CharType >::write_msgpack ( const BasicJsonType &  j )

inline

Parameters

[in]

j

JSON value to serialize

Definition at line 8627 of file json.hpp.

References nlohmann::detail::array, nlohmann::detail::boolean, max(), anonymous_namespace{chameleon.cpp}::min(), nlohmann::detail::null, nlohmann::detail::number_float, nlohmann::detail::number_integer, nlohmann::detail::number_unsigned, nlohmann::detail::object, and nlohmann::detail::string.

    {
        switch (j.type())
        {
            case value_t::null: // nil
            {
                oa->write_character(to_char_type(0xC0));
                break;
            }

            case value_t::boolean: // true and false
            {
                oa->write_character(j.m_value.boolean
                                    ? to_char_type(0xC3)
                                    : to_char_type(0xC2));
                break;
            }

            case value_t::number_integer:
            {
                if (j.m_value.number_integer >= 0)
                {
                    // MessagePack does not differentiate between positive
                    // signed integers and unsigned integers. Therefore, we used
                    // the code from the value_t::number_unsigned case here.
                    if (j.m_value.number_unsigned < 128)
                    {
                        // positive fixnum
                        write_number(static_cast<uint8_t>(j.m_value.number_integer));
                    }
                    else if (j.m_value.number_unsigned <= (std::numeric_limits<uint8_t>::max)())
                    {
                        // uint 8
                        oa->write_character(to_char_type(0xCC));
                        write_number(static_cast<uint8_t>(j.m_value.number_integer));
                    }
                    else if (j.m_value.number_unsigned <= (std::numeric_limits<uint16_t>::max)())
                    {
                        // uint 16
                        oa->write_character(to_char_type(0xCD));
                        write_number(static_cast<uint16_t>(j.m_value.number_integer));
                    }
                    else if (j.m_value.number_unsigned <= (std::numeric_limits<uint32_t>::max)())
                    {
                        // uint 32
                        oa->write_character(to_char_type(0xCE));
                        write_number(static_cast<uint32_t>(j.m_value.number_integer));
                    }
                    else if (j.m_value.number_unsigned <= (std::numeric_limits<uint64_t>::max)())
                    {
                        // uint 64
                        oa->write_character(to_char_type(0xCF));
                        write_number(static_cast<uint64_t>(j.m_value.number_integer));
                    }
                }
                else
                {
                    if (j.m_value.number_integer >= -32)
                    {
                        // negative fixnum
                        write_number(static_cast<int8_t>(j.m_value.number_integer));
                    }
                    else if (j.m_value.number_integer >= (std::numeric_limits<int8_t>::min)() and
                             j.m_value.number_integer <= (std::numeric_limits<int8_t>::max)())
                    {
                        // int 8
                        oa->write_character(to_char_type(0xD0));
                        write_number(static_cast<int8_t>(j.m_value.number_integer));
                    }
                    else if (j.m_value.number_integer >= (std::numeric_limits<int16_t>::min)() and
                             j.m_value.number_integer <= (std::numeric_limits<int16_t>::max)())
                    {
                        // int 16
                        oa->write_character(to_char_type(0xD1));
                        write_number(static_cast<int16_t>(j.m_value.number_integer));
                    }
                    else if (j.m_value.number_integer >= (std::numeric_limits<int32_t>::min)() and
                             j.m_value.number_integer <= (std::numeric_limits<int32_t>::max)())
                    {
                        // int 32
                        oa->write_character(to_char_type(0xD2));
                        write_number(static_cast<int32_t>(j.m_value.number_integer));
                    }
                    else if (j.m_value.number_integer >= (std::numeric_limits<int64_t>::min)() and
                             j.m_value.number_integer <= (std::numeric_limits<int64_t>::max)())
                    {
                        // int 64
                        oa->write_character(to_char_type(0xD3));
                        write_number(static_cast<int64_t>(j.m_value.number_integer));
                    }
                }
                break;
            }

            case value_t::number_unsigned:
            {
                if (j.m_value.number_unsigned < 128)
                {
                    // positive fixnum
                    write_number(static_cast<uint8_t>(j.m_value.number_integer));
                }
                else if (j.m_value.number_unsigned <= (std::numeric_limits<uint8_t>::max)())
                {
                    // uint 8
                    oa->write_character(to_char_type(0xCC));
                    write_number(static_cast<uint8_t>(j.m_value.number_integer));
                }
                else if (j.m_value.number_unsigned <= (std::numeric_limits<uint16_t>::max)())
                {
                    // uint 16
                    oa->write_character(to_char_type(0xCD));
                    write_number(static_cast<uint16_t>(j.m_value.number_integer));
                }
                else if (j.m_value.number_unsigned <= (std::numeric_limits<uint32_t>::max)())
                {
                    // uint 32
                    oa->write_character(to_char_type(0xCE));
                    write_number(static_cast<uint32_t>(j.m_value.number_integer));
                }
                else if (j.m_value.number_unsigned <= (std::numeric_limits<uint64_t>::max)())
                {
                    // uint 64
                    oa->write_character(to_char_type(0xCF));
                    write_number(static_cast<uint64_t>(j.m_value.number_integer));
                }
                break;
            }

            case value_t::number_float:
            {
                oa->write_character(get_msgpack_float_prefix(j.m_value.number_float));
                write_number(j.m_value.number_float);
                break;
            }

            case value_t::string:
            {
                // step 1: write control byte and the string length
                const auto N = j.m_value.string->size();
                if (N <= 31)
                {
                    // fixstr
                    write_number(static_cast<uint8_t>(0xA0 | N));
                }
                else if (N <= (std::numeric_limits<uint8_t>::max)())
                {
                    // str 8
                    oa->write_character(to_char_type(0xD9));
                    write_number(static_cast<uint8_t>(N));
                }
                else if (N <= (std::numeric_limits<uint16_t>::max)())
                {
                    // str 16
                    oa->write_character(to_char_type(0xDA));
                    write_number(static_cast<uint16_t>(N));
                }
                else if (N <= (std::numeric_limits<uint32_t>::max)())
                {
                    // str 32
                    oa->write_character(to_char_type(0xDB));
                    write_number(static_cast<uint32_t>(N));
                }

                // step 2: write the string
                oa->write_characters(
                    reinterpret_cast<const CharType*>(j.m_value.string->c_str()),
                    j.m_value.string->size());
                break;
            }

            case value_t::array:
            {
                // step 1: write control byte and the array size
                const auto N = j.m_value.array->size();
                if (N <= 15)
                {
                    // fixarray
                    write_number(static_cast<uint8_t>(0x90 | N));
                }
                else if (N <= (std::numeric_limits<uint16_t>::max)())
                {
                    // array 16
                    oa->write_character(to_char_type(0xDC));
                    write_number(static_cast<uint16_t>(N));
                }
                else if (N <= (std::numeric_limits<uint32_t>::max)())
                {
                    // array 32
                    oa->write_character(to_char_type(0xDD));
                    write_number(static_cast<uint32_t>(N));
                }

                // step 2: write each element
                for (const auto& el : *j.m_value.array)
                {
                    write_msgpack(el);
                }
                break;
            }

            case value_t::object:
            {
                // step 1: write control byte and the object size
                const auto N = j.m_value.object->size();
                if (N <= 15)
                {
                    // fixmap
                    write_number(static_cast<uint8_t>(0x80 | (N & 0xF)));
                }
                else if (N <= (std::numeric_limits<uint16_t>::max)())
                {
                    // map 16
                    oa->write_character(to_char_type(0xDE));
                    write_number(static_cast<uint16_t>(N));
                }
                else if (N <= (std::numeric_limits<uint32_t>::max)())
                {
                    // map 32
                    oa->write_character(to_char_type(0xDF));
                    write_number(static_cast<uint32_t>(N));
                }

                // step 2: write each element
                for (const auto& el : *j.m_value.object)
                {
                    write_msgpack(el.first);
                    write_msgpack(el.second);
                }
                break;
            }

            default:
                break;
        }
    }

template<typename BasicJsonType , typename CharType >

template<typename NumberType , bool OutputIsLittleEndian = false>

void nlohmann::detail::binary_writer< BasicJsonType, CharType >::write_number ( const NumberType  n )

inlineprivate

Definition at line 9594 of file json.hpp.

References Catch::Generators::value().

    {
        // step 1: write number to array of length NumberType
        std::array<CharType, sizeof(NumberType)> vec;
        std::memcpy(vec.data(), &n, sizeof(NumberType));

        // step 2: write array to output (with possible reordering)
        if (is_little_endian and not OutputIsLittleEndian)
        {
            // reverse byte order prior to conversion if necessary
            std::reverse(vec.begin(), vec.end());
        }

        oa->write_characters(vec.data(), sizeof(NumberType));
    }

template<typename BasicJsonType , typename CharType >

template<typename NumberType , typename std::enable_if< std::is_floating_point< NumberType >::value, int >::type = 0>

void nlohmann::detail::binary_writer< BasicJsonType, CharType >::write_number_with_ubjson_prefix ( const NumberType  n, const bool  add_prefix  )

inlineprivate

Definition at line 9371 of file json.hpp.

References Catch::Generators::value().

    {
        if (add_prefix)
        {
            oa->write_character(get_ubjson_float_prefix(n));
        }
        write_number(n);
    }

template<typename BasicJsonType , typename CharType >

template<typename NumberType , typename std::enable_if< std::is_unsigned< NumberType >::value, int >::type = 0>

void nlohmann::detail::binary_writer< BasicJsonType, CharType >::write_number_with_ubjson_prefix ( const NumberType  n, const bool  add_prefix  )

inlineprivate

Definition at line 9384 of file json.hpp.

References nlohmann::detail::out_of_range::create(), JSON_THROW, max(), and Catch::Generators::value().

    {
        if (n <= static_cast<uint64_t>((std::numeric_limits<int8_t>::max)()))
        {
            if (add_prefix)
            {
                oa->write_character(to_char_type('i'));  // int8
            }
            write_number(static_cast<uint8_t>(n));
        }
        else if (n <= (std::numeric_limits<uint8_t>::max)())
        {
            if (add_prefix)
            {
                oa->write_character(to_char_type('U'));  // uint8
            }
            write_number(static_cast<uint8_t>(n));
        }
        else if (n <= static_cast<uint64_t>((std::numeric_limits<int16_t>::max)()))
        {
            if (add_prefix)
            {
                oa->write_character(to_char_type('I'));  // int16
            }
            write_number(static_cast<int16_t>(n));
        }
        else if (n <= static_cast<uint64_t>((std::numeric_limits<int32_t>::max)()))
        {
            if (add_prefix)
            {
                oa->write_character(to_char_type('l'));  // int32
            }
            write_number(static_cast<int32_t>(n));
        }
        else if (n <= static_cast<uint64_t>((std::numeric_limits<int64_t>::max)()))
        {
            if (add_prefix)
            {
                oa->write_character(to_char_type('L'));  // int64
            }
            write_number(static_cast<int64_t>(n));
        }
        else
        {
            JSON_THROW(out_of_range::create(407, "integer number " + std::to_string(n) + " cannot be represented by UBJSON as it does not fit int64"));
        }
    }

template<typename BasicJsonType , typename CharType >

template<typename NumberType , typename std::enable_if< std::is_signed< NumberType >::value andnot std::is_floating_point< NumberType >::value, int >::type = 0>

void nlohmann::detail::binary_writer< BasicJsonType, CharType >::write_number_with_ubjson_prefix ( const NumberType  n, const bool  add_prefix  )

inlineprivate

Definition at line 9437 of file json.hpp.

References nlohmann::detail::out_of_range::create(), JSON_THROW, max(), and anonymous_namespace{chameleon.cpp}::min().

    {
        if ((std::numeric_limits<int8_t>::min)() <= n and n <= (std::numeric_limits<int8_t>::max)())
        {
            if (add_prefix)
            {
                oa->write_character(to_char_type('i'));  // int8
            }
            write_number(static_cast<int8_t>(n));
        }
        else if (static_cast<int64_t>((std::numeric_limits<uint8_t>::min)()) <= n and n <= static_cast<int64_t>((std::numeric_limits<uint8_t>::max)()))
        {
            if (add_prefix)
            {
                oa->write_character(to_char_type('U'));  // uint8
            }
            write_number(static_cast<uint8_t>(n));
        }
        else if ((std::numeric_limits<int16_t>::min)() <= n and n <= (std::numeric_limits<int16_t>::max)())
        {
            if (add_prefix)
            {
                oa->write_character(to_char_type('I'));  // int16
            }
            write_number(static_cast<int16_t>(n));
        }
        else if ((std::numeric_limits<int32_t>::min)() <= n and n <= (std::numeric_limits<int32_t>::max)())
        {
            if (add_prefix)
            {
                oa->write_character(to_char_type('l'));  // int32
            }
            write_number(static_cast<int32_t>(n));
        }
        else if ((std::numeric_limits<int64_t>::min)() <= n and n <= (std::numeric_limits<int64_t>::max)())
        {
            if (add_prefix)
            {
                oa->write_character(to_char_type('L'));  // int64
            }
            write_number(static_cast<int64_t>(n));
        }
        // LCOV_EXCL_START
        else
        {
            JSON_THROW(out_of_range::create(407, "integer number " + std::to_string(n) + " cannot be represented by UBJSON as it does not fit int64"));
        }
        // LCOV_EXCL_STOP
    }

template<typename BasicJsonType , typename CharType >

void nlohmann::detail::binary_writer< BasicJsonType, CharType >::write_ubjson ( const BasicJsonType &  j, const bool  use_count, const bool  use_type, const bool  add_prefix = true  )

inline

Parameters

[in]	j	JSON value to serialize
[in]	use_count	whether to use '#' prefixes (optimized format)
[in]	use_type	whether to use '$' prefixes (optimized format)
[in]	add_prefix	whether prefixes need to be used for this value

Definition at line 8869 of file json.hpp.

References nlohmann::detail::array, nlohmann::detail::boolean, nlohmann::detail::null, nlohmann::detail::number_float, nlohmann::detail::number_integer, nlohmann::detail::number_unsigned, nlohmann::detail::object, and nlohmann::detail::string.

    {
        switch (j.type())
        {
            case value_t::null:
            {
                if (add_prefix)
                {
                    oa->write_character(to_char_type('Z'));
                }
                break;
            }

            case value_t::boolean:
            {
                if (add_prefix)
                {
                    oa->write_character(j.m_value.boolean
                                        ? to_char_type('T')
                                        : to_char_type('F'));
                }
                break;
            }

            case value_t::number_integer:
            {
                write_number_with_ubjson_prefix(j.m_value.number_integer, add_prefix);
                break;
            }

            case value_t::number_unsigned:
            {
                write_number_with_ubjson_prefix(j.m_value.number_unsigned, add_prefix);
                break;
            }

            case value_t::number_float:
            {
                write_number_with_ubjson_prefix(j.m_value.number_float, add_prefix);
                break;
            }

            case value_t::string:
            {
                if (add_prefix)
                {
                    oa->write_character(to_char_type('S'));
                }
                write_number_with_ubjson_prefix(j.m_value.string->size(), true);
                oa->write_characters(
                    reinterpret_cast<const CharType*>(j.m_value.string->c_str()),
                    j.m_value.string->size());
                break;
            }

            case value_t::array:
            {
                if (add_prefix)
                {
                    oa->write_character(to_char_type('['));
                }

                bool prefix_required = true;
                if (use_type and not j.m_value.array->empty())
                {
                    assert(use_count);
                    const CharType first_prefix = ubjson_prefix(j.front());
                    const bool same_prefix = std::all_of(j.begin() + 1, j.end(),
                                                         [this, first_prefix](const BasicJsonType & v)
                    {
                        return ubjson_prefix(v) == first_prefix;
                    });

                    if (same_prefix)
                    {
                        prefix_required = false;
                        oa->write_character(to_char_type('$'));
                        oa->write_character(first_prefix);
                    }
                }

                if (use_count)
                {
                    oa->write_character(to_char_type('#'));
                    write_number_with_ubjson_prefix(j.m_value.array->size(), true);
                }

                for (const auto& el : *j.m_value.array)
                {
                    write_ubjson(el, use_count, use_type, prefix_required);
                }

                if (not use_count)
                {
                    oa->write_character(to_char_type(']'));
                }

                break;
            }

            case value_t::object:
            {
                if (add_prefix)
                {
                    oa->write_character(to_char_type('{'));
                }

                bool prefix_required = true;
                if (use_type and not j.m_value.object->empty())
                {
                    assert(use_count);
                    const CharType first_prefix = ubjson_prefix(j.front());
                    const bool same_prefix = std::all_of(j.begin(), j.end(),
                                                         [this, first_prefix](const BasicJsonType & v)
                    {
                        return ubjson_prefix(v) == first_prefix;
                    });

                    if (same_prefix)
                    {
                        prefix_required = false;
                        oa->write_character(to_char_type('$'));
                        oa->write_character(first_prefix);
                    }
                }

                if (use_count)
                {
                    oa->write_character(to_char_type('#'));
                    write_number_with_ubjson_prefix(j.m_value.object->size(), true);
                }

                for (const auto& el : *j.m_value.object)
                {
                    write_number_with_ubjson_prefix(el.first.size(), true);
                    oa->write_characters(
                        reinterpret_cast<const CharType*>(el.first.c_str()),
                        el.first.size());
                    write_ubjson(el.second, use_count, use_type, prefix_required);
                }

                if (not use_count)
                {
                    oa->write_character(to_char_type('}'));
                }

                break;
            }

            default:
                break;
        }
    }

Member Data Documentation

template<typename BasicJsonType , typename CharType >

const bool nlohmann::detail::binary_writer< BasicJsonType, CharType >::is_little_endian = binary_reader<BasicJsonType>::little_endianess()

private

whether we can assume little endianess

Definition at line 9653 of file json.hpp.

template<typename BasicJsonType , typename CharType >

output_adapter_t<CharType> nlohmann::detail::binary_writer< BasicJsonType, CharType >::oa = nullptr

private

the output

Definition at line 9656 of file json.hpp.

---

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

• src/3party/JSON/json.hpp