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💩 first try on #1045

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Niels Lohmann
2018-04-10 08:29:07 +02:00
parent acf10d9af7
commit 8d8f890771
3 changed files with 55 additions and 0 deletions
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17
single_include/nlohmann/json.hpp
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@ -4491,6 +4491,7 @@ class iter_impl
#include <cstddef> // size_t
#include <string> // string, to_string
#include <iterator> // input_iterator_tag
// #include <nlohmann/detail/value_t.hpp>
@ -4506,6 +4507,13 @@ template<typename IteratorType> class iteration_proxy
/// helper class for iteration
class iteration_proxy_internal
{
public:
using difference_type = std::ptrdiff_t;
using value_type = iteration_proxy_internal;
using pointer = iteration_proxy_internal*;
using reference = iteration_proxy_internal&;
using iterator_category = std::input_iterator_tag;
private:
/// the iterator
IteratorType anchor;
@ -4515,6 +4523,9 @@ template<typename IteratorType> class iteration_proxy
public:
explicit iteration_proxy_internal(IteratorType it) noexcept : anchor(it) {}
iteration_proxy_internal(const iteration_proxy_internal&) = default;
iteration_proxy_internal& operator=(const iteration_proxy_internal&) = default;
/// dereference operator (needed for range-based for)
iteration_proxy_internal& operator*()
{
@ -4530,6 +4541,12 @@ template<typename IteratorType> class iteration_proxy
return *this;
}
/// equality operator (needed for InputIterator)
bool operator==(const iteration_proxy_internal& o) const noexcept
{
return anchor == o.anchor;
}
/// inequality operator (needed for range-based for)
bool operator!=(const iteration_proxy_internal& o) const noexcept
{