decode_msgpack.md

jsoncons::msgpack::decode_msgpack

#include <jsoncons_ext/msgpack/msgpack.hpp>

template<class T>
T decode_msgpack(const std::vector<uint8_t>& source,
                 const msgpack_decode_options& options = msgpack_decode_options()); (1) (until 0.152.0)

template<class T, class Source>
T decode_msgpack(const Source& source,
                 const msgpack_decode_options& options = msgpack_decode_options()); (1) (since 0.152.0)

template<class T>
T decode_msgpack(std::istream& is,
                 const msgpack_decode_options& options = msgpack_decode_options()); (2)

template<class T, class InputIt>
T decode_msgpack(InputIt first, InputIt last,
                 const msgpack_decode_options& options = msgpack_decode_options()); (3) (since 0.153.0)

Decodes a MessagePack data format into a C++ data structure.

(1) Reads MessagePack data from a contiguous byte sequence provided by source into a type T, using the specified (or defaulted) options. Type Source must be a container that has member functions data() and size(), and member type value_type with size exactly 8 bits (since 0.152.0.) Any of the values types int8_t, uint8_t, char, unsigned char and std::byte (since C++17) are allowed. Type 'T' must be an instantiation of basic_json or support json_type_traits.

(2) Reads MessagePack data from a binary stream into a type T, using the specified (or defaulted) options. Type 'T' must be an instantiation of basic_json or support json_type_traits.

(3) Reads MessagePack data from the range [first,last) into a type T, using the specified (or defaulted) options. Type 'T' must be an instantiation of basic_json or support json_type_traits.

Exceptions

Throws a ser_error if parsing fails, and a conv_error if type conversion fails.

See also

encode_msgpack encodes a json value to the MessagePack data format.