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remove std::pair support

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This commit is contained in:
Théo DELRIEU
2017-06-13 11:11:29 +02:00
parent fd4a0ecabc
commit c98364834f
2 changed files with 6 additions and 78 deletions
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48
src/json.hpp
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@ -866,14 +866,6 @@ void to_json(BasicJsonType& j, T (&arr)[N])
external_constructor<value_t::array>::construct(j, arr);
}
template <typename BasicJsonType, typename CompatibleString, typename T,
enable_if_t<std::is_constructible<typename BasicJsonType::string_t,
CompatibleString>::value, int> = 0>
void to_json(BasicJsonType& j, std::pair<CompatibleString, T> const& p)
{
j[p.first] = p.second;
}
///////////////
// from_json //
///////////////
@ -1047,23 +1039,16 @@ void from_json(const BasicJsonType& j, CompatibleObjectType& obj)
using std::begin;
using std::end;
using value_type = typename CompatibleObjectType::value_type;
std::vector<value_type> v;
v.reserve(j.size());
std::transform(
inner_object->begin(), inner_object->end(), std::back_inserter(v),
inner_object->begin(), inner_object->end(),
std::inserter(obj, obj.begin()),
[](typename BasicJsonType::object_t::value_type const & p)
{
return value_type
{
p.first,
p.second
.template get<typename CompatibleObjectType::mapped_type>()};
return value_type(
p.first,
p.second
.template get<typename CompatibleObjectType::mapped_type>());
});
// we could avoid the assignment, but this might require a for loop, which
// might be less efficient than the container constructor for some
// containers (would it?)
obj = CompatibleObjectType(std::make_move_iterator(begin(v)),
std::make_move_iterator(end(v)));
}
// overload for arithmetic types, not chosen for basic_json template arguments
@ -1109,27 +1094,6 @@ void from_json(const BasicJsonType& j, ArithmeticType& val)
}
}
template <typename BasicJsonType, typename CompatibleString, typename T,
enable_if_t<std::is_constructible<typename BasicJsonType::string_t,
CompatibleString>::value, int> = 0>
void from_json(const BasicJsonType& j, std::pair<CompatibleString, T>& p)
{
if (not j.is_object())
{
JSON_THROW(type_error::create(302, "type must be object, but is " + j.type_name()));
}
auto const inner_object = j.template get_ptr<const typename BasicJsonType::object_t*>();
auto const size = inner_object->size();
if (size != 1)
{
JSON_THROW(other_error::create(502, "conversion to std::pair requires the object to have exactly one field, but it has " + std::to_string(size)));
}
auto const& obj = *inner_object->begin();
// cannot use *inner_object, need to convert both members
p = std::make_pair(obj.first, obj.second.template get<T>());
}
struct to_json_fn
{
private: