mirror of
https://github.com/simdjson/simdjson
synced 2026-06-08 17:27:07 +00:00
Mikhail Matrosov
100 lines
3.3 KiB
C++
100 lines
3.3 KiB
C++
#include "simdjson/error.h"
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namespace simdjson {
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namespace SIMDJSON_IMPLEMENTATION {
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namespace ondemand {
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class array;
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class value;
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class document;
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/**
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* A forward-only JSON array.
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*
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* This is an input_iterator, meaning:
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* - It is forward-only
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* - * must be called exactly once per element.
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* - ++ must be called exactly once in between each * (*, ++, *, ++, * ...)
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*/
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template<typename T>
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class array_iterator {
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public:
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/** Create a new, invalid array iterator. */
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simdjson_really_inline array_iterator() noexcept = default;
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simdjson_really_inline array_iterator(const array_iterator<T> &a) noexcept = default;
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simdjson_really_inline array_iterator<T> &operator=(const array_iterator<T> &a) noexcept = default;
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//
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// Iterator interface
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//
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/**
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* Get the current element.
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*
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* Part of the std::iterator interface.
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*/
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simdjson_really_inline simdjson_result<value> operator*() noexcept; // MUST ONLY BE CALLED ONCE PER ITERATION.
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/**
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* Check if we are at the end of the JSON.
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*
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* Part of the std::iterator interface.
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*
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* @return true if there are no more elements in the JSON array.
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*/
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simdjson_really_inline bool operator==(const array_iterator<T> &) const noexcept;
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/**
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* Check if there are more elements in the JSON array.
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*
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* Part of the std::iterator interface.
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*
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* @return true if there are more elements in the JSON array.
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*/
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simdjson_really_inline bool operator!=(const array_iterator<T> &) const noexcept;
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/**
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* Move to the next element.
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*
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* Part of the std::iterator interface.
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*/
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simdjson_really_inline array_iterator<T> &operator++() noexcept;
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private:
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T *iter{};
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simdjson_really_inline array_iterator(T &iter) noexcept;
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static simdjson_really_inline simdjson_result<array_iterator<T>> start(T &iter, const uint8_t *json) noexcept;
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friend T;
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friend class array;
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friend class value;
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friend struct simdjson_result<array_iterator<T>>;
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};
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} // namespace ondemand
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} // namespace SIMDJSON_IMPLEMENTATION
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} // namespace simdjson
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namespace simdjson {
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template<typename T>
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struct simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::array_iterator<T>> : public SIMDJSON_IMPLEMENTATION::implementation_simdjson_result_base<SIMDJSON_IMPLEMENTATION::ondemand::array_iterator<T>> {
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public:
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simdjson_really_inline simdjson_result(SIMDJSON_IMPLEMENTATION::ondemand::array_iterator<T> &&value) noexcept; ///< @private
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simdjson_really_inline simdjson_result(error_code error) noexcept; ///< @private
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simdjson_really_inline simdjson_result() noexcept = default;
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simdjson_really_inline simdjson_result(simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::array_iterator<T>> &&a) noexcept = default;
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simdjson_really_inline ~simdjson_result() noexcept = default; ///< @private
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//
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// Iterator interface
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//
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simdjson_really_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> operator*() noexcept; // MUST ONLY BE CALLED ONCE PER ITERATION.
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simdjson_really_inline bool operator==(const simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::array_iterator<T>> &) const noexcept;
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simdjson_really_inline bool operator!=(const simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::array_iterator<T>> &) const noexcept;
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simdjson_really_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::array_iterator<T>> &operator++() noexcept;
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};
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} // namespace simdjson
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