set_parent()

template<template< typename U, typename V, typename... Args > class ObjectType = std::map, template< typename U, typename... Args > class ArrayType = std::vector, class StringType = std::string, class BooleanType = bool, class NumberIntegerType = std::int64_t, class NumberUnsignedType = std::uint64_t, class NumberFloatType = double, template< typename U > class AllocatorType = std::allocator, template< typename T, typename SFINAE=void > class JSONSerializer = adl_serializer, class BinaryType = std::vector<std::uint8_t>>

reference nlohmann::basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType, JSONSerializer, BinaryType >::set_parent ( reference  j, std::size_t  old_capacity = std::size_t(-1)  )

inlineprivate

Definition at line 19011 of file json.hpp.

    {
#if JSON_DIAGNOSTICS
 
        if (old_capacity != std::size_t(-1))
        {
            // see https://github.com/nlohmann/json/issues/2838
            JSON_ASSERT(type() == value_t::array);
 
            if (JSON_HEDLEY_UNLIKELY(m_value.array->capacity() != old_capacity))
            {
                // capacity has changed: update all parents
                set_parents();
                return j;
            }
        }
 
        // ordered_json uses a vector internally, so pointers could have
        // been invalidated; see https://github.com/nlohmann/json/issues/2962
#ifdef JSON_HEDLEY_MSVC_VERSION
#pragma warning(push )
#pragma warning(disable : 4127) // ignore warning to replace if with if constexpr
#endif
 
        if (detail::is_ordered_map<object_t>::value)
        {
            set_parents();
            return j;
        }
 
#ifdef JSON_HEDLEY_MSVC_VERSION
#pragma warning( pop )
#endif
        j.m_parent = this;
#else
        static_cast<void>(j);
        static_cast<void>(old_capacity);
#endif
        return j;
    }