mirror/json
1
0
Fork 0
mirror of https://github.com/nlohmann/json.git synced 2024-12-03 21:59:08 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

replicate code changes into re2c file

Browse Source
This commit is contained in:
dariomt 2016-01-18 11:32:24 +01:00
parent e1645a09e9
commit 4d079d135e
1 changed files with 59 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

59
src/json.hpp.re2c
View File

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