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replicate code changes into re2c file
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@ -2416,6 +2416,19 @@ class basic_json
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return is_number_float() ? &m_value.number_float : nullptr;
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return is_number_float() ? &m_value.number_float : nullptr;
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}
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}
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/// helper function to implement get_ref without code duplication
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/// for const and non-const overloads
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/// ThisType will be deduced as 'basic_jason' or 'const basic_json'
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template<typename ReferenceType, typename ThisType>
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static ReferenceType get_ref_impl(ThisType& obj)
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{
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using PointerType = std::add_pointer<ReferenceType>::type;
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// delegate the call to get_ptr<>()
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auto ptr = obj.get_ptr<PointerType>();
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if (ptr) return *ptr;
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throw std::domain_error("incompatible ReferenceType for get_ref, actual type is " + obj.type_name());
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}
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public:
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public:
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/// @name value access
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/// @name value access
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@ -2563,6 +2576,52 @@ class basic_json
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return get_impl_ptr(static_cast<const PointerType>(nullptr));
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return get_impl_ptr(static_cast<const PointerType>(nullptr));
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}
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}
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/*!
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@brief get a reference value (implicit)
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Implict reference access to the internally stored JSON value. No copies are
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made.
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@warning Writing data to the referee of the result yields an undefined
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state.
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@tparam ReferenceType reference type; must be a reference to @ref array_t, @ref
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object_t, @ref string_t, @ref boolean_t, @ref number_integer_t, or @ref
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number_float_t.
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@return reference to the internally stored JSON value if the requested reference
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type @a ReferenceType fits to the JSON value; throws std::domain_error otherwise
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@throw std::domain_error in case passed type @a ReferenceType is incompatible
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with the stored JSON value
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@complexity Constant.
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*/
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template<typename ReferenceType, typename
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std::enable_if<
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std::is_reference<ReferenceType>::value
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, int>::type = 0>
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ReferenceType get_ref()
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{
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// delegate call to get_ref_impl
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return get_ref_impl<ReferenceType>(*this);
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}
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/*!
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@brief get a reference value (implicit)
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@copydoc get_ref()
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*/
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template<typename ReferenceType, typename
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std::enable_if<
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std::is_reference<ReferenceType>::value
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and std::is_const< typename std::remove_reference<ReferenceType>::type >::value
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, int>::type = 0>
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ReferenceType get_ref() const
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{
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// delegate call to get_ref_impl
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return get_ref_impl<ReferenceType>(*this);
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}
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/*!
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/*!
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@brief get a value (implicit)
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@brief get a value (implicit)
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