get_ref_impl()

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>>

template<typename ReferenceType , typename ThisType >

static ReferenceType nlohmann::basic_json< ObjectType, ArrayType, StringType, BooleanType, NumberIntegerType, NumberUnsignedType, NumberFloatType, AllocatorType, JSONSerializer, BinaryType >::get_ref_impl ( ThisType &  obj )

inlinestaticprivate

helper function to implement get_ref()

This function helps to implement get_ref() without code duplication for const and non-const overloads

Template Parameters

ThisType

will be deduced as basic_json or const basic_json

Exceptions

type_error.303

if ReferenceType does not match underlying value type of the current JSON

Definition at line 20660 of file json.hpp.

    {
        // delegate the call to get_ptr<>()
        auto *ptr = obj.template get_ptr<typename std::add_pointer<ReferenceType>::type>();
 
        if (JSON_HEDLEY_LIKELY(ptr != nullptr))
        {
            return *ptr;
        }
 
        JSON_THROW(type_error::create(303, "incompatible ReferenceType for get_ref, actual type is " + std::string(obj.type_name()), obj));
    }