flatten()

template<typename BasicJsonType >

static void nlohmann::json_pointer< BasicJsonType >::flatten ( const std::string &  reference_string, const BasicJsonType &  value, BasicJsonType &  result  )

inlinestaticprivate

Parameters

[in]	reference_string	the reference string to the current value
[in]	value	the value to consider
[in,out]	result	the result object to insert values to

Note

Empty objects or arrays are flattened to null.

Definition at line 13405 of file json.hpp.

    {
        switch (value.type())
        {
            case detail::value_t::array:
            {
                if (value.m_value.array->empty())
                {
                    // flatten empty array as null
                    result[reference_string] = nullptr;
                }
 
                else
                {
                    // iterate array and use index as reference string
                    for (std::size_t i = 0; i < value.m_value.array->size(); ++i)
                    {
                        flatten(reference_string + "/" + std::to_string(i),
                                value.m_value.array->operator[](i), result);
                    }
                }
 
                break;
            }
 
            case detail::value_t::object:
            {
                if (value.m_value.object->empty())
                {
                    // flatten empty object as null
                    result[reference_string] = nullptr;
                }
 
                else
                {
                    // iterate object and use keys as reference string
                    for (const auto &element : *value.m_value.object)
                    {
                        flatten(reference_string + "/" + detail::escape(element.first), element.second, result);
                    }
                }
 
                break;
            }
 
            case detail::value_t::null:
            case detail::value_t::string:
            case detail::value_t::boolean:
            case detail::value_t::number_integer:
            case detail::value_t::number_unsigned:
            case detail::value_t::number_float:
            case detail::value_t::binary:
            case detail::value_t::discarded:
            default:
            {
                // add primitive value with its reference string
                result[reference_string] = value;
                break;
            }
        }
    }