parse_bson_element_internal()

template<typename BasicJsonType , typename InputAdapterType , typename SAX = json_sax_dom_parser<BasicJsonType>>

bool nlohmann::detail::binary_reader< BasicJsonType, InputAdapterType, SAX >::parse_bson_element_internal ( const char_int_type  element_type, const std::size_t  element_type_parse_position  )

inlineprivate

Read a BSON document element of the given element_type.

Parameters

[in]	element_type	The BSON element type, c.f. http://bsonspec.org/spec.html
[in]	element_type_parse_position	The position in the input stream, where the element_type was read.

Warning

Not all BSON element types are supported yet. An unsupported element_type will give rise to a parse_error.114: Unsupported BSON record type 0x...

Returns

whether a valid BSON-object/array was passed to the SAX parser

Definition at line 8647 of file json.hpp.

    {
        switch (element_type)
        {
            case 0x01: // double
            {
                double number{};
                return get_number<double, true>(input_format_t::bson, number) && sax->number_float(static_cast<number_float_t>(number), "");
            }
 
            case 0x02: // string
            {
                std::int32_t len{};
                string_t value;
                return get_number<std::int32_t, true>(input_format_t::bson, len) && get_bson_string(len, value) && sax->string(value);
            }
 
            case 0x03: // object
            {
                return parse_bson_internal();
            }
 
            case 0x04: // array
            {
                return parse_bson_array();
            }
 
            case 0x05: // binary
            {
                std::int32_t len{};
                binary_t value;
                return get_number<std::int32_t, true>(input_format_t::bson, len) && get_bson_binary(len, value) && sax->binary(value);
            }
 
            case 0x08: // boolean
            {
                return sax->boolean(get() != 0);
            }
 
            case 0x0A: // null
            {
                return sax->null();
            }
 
            case 0x10: // int32
            {
                std::int32_t value{};
                return get_number<std::int32_t, true>(input_format_t::bson, value) && sax->number_integer(value);
            }
 
            case 0x12: // int64
            {
                std::int64_t value{};
                return get_number<std::int64_t, true>(input_format_t::bson, value) && sax->number_integer(value);
            }
 
            default: // anything else not supported (yet)
            {
                std::array<char, 3> cr{{}};
                (std::snprintf)(cr.data(), cr.size(), "%.2hhX", static_cast<unsigned char>(element_type)); // NOLINT(cppcoreguidelines-pro-type-vararg,hicpp-vararg)
                return sax->parse_error(element_type_parse_position, std::string(cr.data()), parse_error::create(114, element_type_parse_position, "Unsupported BSON record type 0x" + std::string(cr.data()), BasicJsonType()));
            }
        }
    }