object-inl.h

#ifndef SIMDJSON_GENERIC_ONDEMAND_OBJECT_INL_H
 
#ifndef SIMDJSON_CONDITIONAL_INCLUDE
#define SIMDJSON_GENERIC_ONDEMAND_OBJECT_INL_H
#include "simdjson/generic/ondemand/base.h"
#include "simdjson/generic/ondemand/field.h"
#include "simdjson/generic/ondemand/object.h"
#include "simdjson/generic/ondemand/object_iterator.h"
#include "simdjson/generic/ondemand/raw_json_string.h"
#include "simdjson/generic/ondemand/json_iterator.h"
#include "simdjson/generic/ondemand/value-inl.h"
#include "simdjson/jsonpathutil.h"
#include <utility>
#if SIMDJSON_SUPPORTS_CONCEPTS
#include <tuple> // std::forward_as_tuple/get for the variadic for_each adapter
#endif
#if SIMDJSON_STATIC_REFLECTION
#include "simdjson/generic/ondemand/json_string_builder.h"  // for constevalutil::fixed_string
#include <meta>
#endif
#endif // SIMDJSON_CONDITIONAL_INCLUDE
 
namespace simdjson {
namespace SIMDJSON_IMPLEMENTATION {
namespace ondemand {
 
simdjson_inline simdjson_result<value> object::find_field_unordered(const std::string_view key) & noexcept {
  bool has_value;
  SIMDJSON_TRY( iter.find_field_unordered_raw(key).get(has_value) );
  if (!has_value) {
    logger::log_line(iter.json_iter(), "ERROR: ", "Cannot find key %.*s", "", -1, 0, logger::log_level::error, static_cast<int>(key.size()), key.data());
    return NO_SUCH_FIELD;
  }
  return value(iter.child());
}
simdjson_inline simdjson_result<value> object::find_field_unordered(const std::string_view key) && noexcept {
  bool has_value;
  SIMDJSON_TRY( iter.find_field_unordered_raw(key).get(has_value) );
  if (!has_value) {
    logger::log_line(iter.json_iter(), "ERROR: ", "Cannot find key %.*s", "", -1, 0, logger::log_level::error, static_cast<int>(key.size()), key.data());
    return NO_SUCH_FIELD;
  }
  return value(iter.child());
}
simdjson_inline simdjson_result<value> object::operator[](const std::string_view key) & noexcept {
#if SIMDJSON_DEVELOPMENT_CHECKS
  if (locked) return OUT_OF_ORDER_ITERATION;
#endif
  return find_field_unordered(key);
}
simdjson_inline simdjson_result<value> object::operator[](const std::string_view key) && noexcept {
#if SIMDJSON_DEVELOPMENT_CHECKS
  if (locked) return OUT_OF_ORDER_ITERATION;
#endif
  return std::forward<object>(*this).find_field_unordered(key);
}
simdjson_inline simdjson_result<value> object::find_field(const std::string_view key) & noexcept {
#if SIMDJSON_DEVELOPMENT_CHECKS
  if (locked) return OUT_OF_ORDER_ITERATION;
#endif
  bool has_value;
  SIMDJSON_TRY( iter.find_field_raw(key).get(has_value) );
  if (!has_value) {
    logger::log_line(iter.json_iter(), "ERROR: ", "Cannot find key %.*s", "", -1, 0, logger::log_level::error, static_cast<int>(key.size()), key.data());
    return NO_SUCH_FIELD;
  }
  return value(iter.child());
}
simdjson_inline simdjson_result<value> object::find_field(const std::string_view key) && noexcept {
#if SIMDJSON_DEVELOPMENT_CHECKS
  if (locked) return OUT_OF_ORDER_ITERATION;
#endif
  bool has_value;
  SIMDJSON_TRY( iter.find_field_raw(key).get(has_value) );
  if (!has_value) {
    logger::log_line(iter.json_iter(), "ERROR: ", "Cannot find key %.*s", "", -1, 0, logger::log_level::error, static_cast<int>(key.size()), key.data());
    return NO_SUCH_FIELD;
  }
  return value(iter.child());
}
 
#if SIMDJSON_SUPPORTS_CONCEPTS
template <typename Selector, typename Func>
  requires key_selector_type<Selector> &&
           std::is_invocable_v<Func&, std::size_t, value>
simdjson_flatten simdjson_inline for_each_result object::for_each(Func&& on_match)
    noexcept(std::is_nothrow_invocable_v<Func&, std::size_t, value>) {
  // Single pass driven directly by the value_iterator, mirroring
  // find_field_unordered_raw + value(iter.child()). Compared to walking via
  // object_iterator/field, this avoids constructing a simdjson_result<field> and
  // a field (key + value) for every field -- and the development-check bookkeeping
  // in object_iterator -- building a value only for the fields that actually match.
  // We operate on a copy of the iterator, as object::begin() would.
#if SIMDJSON_DEVELOPMENT_CHECKS
  // Mirror object::begin(): for_each must start at the beginning of the object,
  // not from some position left behind by a prior find_field on the same object.
  if (!iter.is_at_iterator_start()) { return {OUT_OF_ORDER_ITERATION, 0}; }
#endif
  value_iterator it = iter;
  std::size_t matched = 0;
  // Track which selector indices have already matched, as a compile-time bitset
  // (one 64-bit word per 64 keys): the callback fires once per key, on its first
  // occurrence, and we stop as soon as every key has matched.
  constexpr std::size_t seen_words = (Selector::size() + 63) / 64;
  std::array<std::uint64_t, seen_words> seen{};
  while (it.is_open()) {
    raw_json_string key;
    error_code error;
    std::size_t idx;
    if constexpr (Selector::window.ok) {
      // A window selector confirms a key from its raw bytes alone (the closing
      // quote bounds it), so we take the length-free path: field_key (no backward
      // scan, mirroring the ordered find_field) feeding match_raw(raw_json_string).
      if ((error = it.field_key().get(key))) { it.abandon(); return {error, matched}; }
      if ((error = it.field_value())) { it.abandon(); return {error, matched}; }
      idx = Selector::match_raw(key);
    } else {
      // Otherwise derive the key length from the structural index (the following
      // ':' token) to feed the length-aware hash, avoiding a forward SIMD scan.
      std::size_t key_len;
      if ((error = it.field_key_with_length(key, key_len))) { it.abandon(); return {error, matched}; }
      if ((error = it.field_value())) { it.abandon(); return {error, matched}; }
      idx = Selector::match_raw(key.raw(), key_len);
    }
    if (idx < Selector::size()) {
      const std::uint64_t seen_bit = std::uint64_t{1} << (idx & 63);
      std::uint64_t &seen_word = seen[idx >> 6];
      if (!(seen_word & seen_bit)) {
        seen_word |= seen_bit;
        value matched_value(it.child());
        // The callback may return void or anything convertible to error_code
        // (error_code itself, or a for_each_result from a nested for_each). When
        // it yields an error_code, we stop at the first non-SUCCESS result and
        // propagate it so the caller can surface value-parse errors (for example,
        // a type mismatch on a matched field). A void-returning callback is
        // responsible for handling its own errors.
        if constexpr (std::is_convertible_v<decltype(on_match(idx, matched_value)), error_code>) {
          // Unlike the internal-error paths above, a callback error does not
          // abandon the iterator: we leave it recoverable so the caller can keep
          // using the object (or its parent) after handling the error.
          if ((error = on_match(idx, matched_value))) { return {error, matched}; }
        } else {
          on_match(idx, matched_value);
        }
        if (++matched >= Selector::size()) { break; }
      }
    }
    // Mirror object_iterator::operator++'s safety rail: if the callback consumed
    // the value and left the iterator closed or in error (e.g. a void callback
    // that swallowed a fatal sub-iteration error), stop here rather than calling
    // skip_child on a closed iterator.
    if (!it.is_open()) { break; }
    // Skip the value (a no-op if the callback consumed it) and step to the next
    // field; has_next_field() ends the container on '}', which closes the loop.
    if ((error = it.skip_child())) { it.abandon(); return {error, matched}; }
    if ((error = it.has_next_field().error())) { return {error, matched}; }
  }
  return {SUCCESS, matched};
}
 
namespace key_selector_for_each_detail {
 
// Dispatch a matched value to the I-th handler in the tuple (0-based). A handler
// is either an invocable taking the value (void- or error_code-returning) or a
// deserialization target, in which case we assign via value::get. We always
// return error_code so the core (index, value) for_each can treat the adapter
// uniformly.
template <typename Tuple, std::size_t... Is>
simdjson_really_inline error_code dispatch_value(
    std::size_t idx, Tuple& handlers, value v, std::index_sequence<Is...>) {
  error_code err = SUCCESS;
  auto try_one = [&](auto Ic) {
    constexpr std::size_t I = decltype(Ic)::value;
    if (idx == I) {
      auto&& h = std::get<I>(handlers);
      using H = std::remove_reference_t<decltype(h)>;
      if constexpr (std::is_invocable_v<H&, value>) {
        // A handler returning void runs for its side effects; one returning
        // anything convertible to error_code (error_code, or a for_each_result
        // from a nested for_each) has its error captured and propagated.
        if constexpr (std::is_convertible_v<decltype(h(v)), error_code>) {
          err = h(v);
        } else {
          h(v);
        }
      } else {
        // Direct deserialization target: assign the matched value into it.
        err = v.get(h);
      }
    }
  };
  (try_one(std::integral_constant<std::size_t, Is>{}), ...);
  return err;
}
 
} // namespace key_selector_for_each_detail
 
template <typename Selector, typename... Handlers>
  requires key_selector_type<Selector> &&
           (sizeof...(Handlers) == Selector::size()) &&
           (key_selector_for_each_detail::field_handler<Handlers> && ...)
simdjson_flatten simdjson_inline for_each_result object::for_each(Handlers&&... on_match)
    noexcept(key_selector_for_each_detail::nothrow_field_handlers_v<Handlers...>) {
  auto handlers = std::forward_as_tuple(std::forward<Handlers>(on_match)...);
  // Reuse the single (index, value) implementation via a tiny adapter.
  // The adapter is called once per *matched* key (very few); the hot path
  // (iteration + match_raw + seen bitset) stays exactly the same.
  return this->template for_each<Selector>(
      [&](std::size_t i, value v) -> error_code {
        return key_selector_for_each_detail::dispatch_value(
            i, handlers, v, std::make_index_sequence<Selector::size()>{});
      });
}
 
template <constevalutil::fixed_string... Keys, typename... Handlers>
  requires (sizeof...(Handlers) == sizeof...(Keys)) &&
           (sizeof...(Keys) >= 1) && (sizeof...(Keys) <= 255) &&
           (key_selector_for_each_detail::field_handler<Handlers> && ...)
simdjson_inline for_each_result object::for_each(Handlers&&... on_match)
    noexcept(key_selector_for_each_detail::nothrow_field_handlers_v<Handlers...>) {
  using Selector = key_selector<Keys...>;
  return this->template for_each<Selector>(std::forward<Handlers>(on_match)...);
}
#endif
 
simdjson_inline simdjson_result<object> object::start(value_iterator &iter) noexcept {
  SIMDJSON_TRY( iter.start_object().error() );
  return object(iter);
}
simdjson_inline simdjson_result<object> object::start_root(value_iterator &iter) noexcept {
  SIMDJSON_TRY( iter.start_root_object().error() );
  return object(iter);
}
simdjson_warn_unused simdjson_inline error_code object::consume() noexcept {
  if(iter.is_at_key()) {
    simdjson_unused raw_json_string actual_key;
    auto error = iter.field_key().get(actual_key);
    if (error) { iter.abandon(); return error; };
    // Let us move to the value while we are at it.
    if ((error = iter.field_value())) { iter.abandon(); return error; }
  }
  auto error_skip = iter.json_iter().skip_child(iter.depth()-1);
  if(error_skip) { iter.abandon(); }
  return error_skip;
}
 
simdjson_inline simdjson_result<std::string_view> object::raw_json() noexcept {
#if SIMDJSON_DEVELOPMENT_CHECKS
  if (locked) return OUT_OF_ORDER_ITERATION;
#endif
  const uint8_t * starting_point{iter.peek_start()};
  auto error = consume();
  if(error) { return error; }
  const uint8_t * final_point{iter._json_iter->peek()};
  return std::string_view(reinterpret_cast<const char*>(starting_point), size_t(final_point - starting_point));
}
 
simdjson_inline simdjson_result<object> object::started(value_iterator &iter) noexcept {
  SIMDJSON_TRY( iter.started_object().error() );
  return object(iter);
}
 
simdjson_inline object object::resume(const value_iterator &iter) noexcept {
  return iter;
}
 
simdjson_inline object::object(const value_iterator &_iter) noexcept
  : iter{_iter}
{
}
 
simdjson_inline simdjson_result<object_iterator> object::begin() & noexcept {
#if SIMDJSON_DEVELOPMENT_CHECKS
  if (!iter.is_at_iterator_start() || locked) { return OUT_OF_ORDER_ITERATION; }
  return object_iterator(iter, this);
#endif
  return object_iterator(iter);
}
simdjson_inline simdjson_result<object_iterator> object::begin() && noexcept {
#if SIMDJSON_DEVELOPMENT_CHECKS
  // The object is a temporary that the iterator may outlive: do not lock it.
  if (!iter.is_at_iterator_start() || locked) { return OUT_OF_ORDER_ITERATION; }
#endif
  return object_iterator(iter);
}
simdjson_inline simdjson_result<object_iterator> object::end() noexcept {
  return object_iterator(iter);
}
 
inline simdjson_result<value> object::at_pointer(std::string_view json_pointer) noexcept {
  if (json_pointer[0] != '/') { return INVALID_JSON_POINTER; }
  json_pointer = json_pointer.substr(1);
  size_t slash = json_pointer.find('/');
  std::string_view key = json_pointer.substr(0, slash);
  // Grab the child with the given key
  simdjson_result<value> child;
 
  // If there is an escape character in the key, unescape it and then get the child.
  size_t escape = key.find('~');
  if (escape != std::string_view::npos) {
    // Unescape the key
    std::string unescaped(key);
    do {
      switch (unescaped[escape+1]) {
        case '0':
          unescaped.replace(escape, 2, "~");
          break;
        case '1':
          unescaped.replace(escape, 2, "/");
          break;
        default:
          return INVALID_JSON_POINTER; // "Unexpected ~ escape character in JSON pointer");
      }
      escape = unescaped.find('~', escape+1);
    } while (escape != std::string::npos);
    child = find_field(unescaped);  // Take note find_field does not unescape keys when matching
  } else {
    child = find_field(key);
  }
  if(child.error()) {
    return child; // we do not continue if there was an error
  }
  // If there is a /, we have to recurse and look up more of the path
  if (slash != std::string_view::npos) {
    child = child.at_pointer(json_pointer.substr(slash));
  }
  return child;
}
 
inline simdjson_result<value> object::at_path(std::string_view json_path) noexcept {
  auto json_pointer = json_path_to_pointer_conversion(json_path);
  if (json_pointer == "-1") {
    return INVALID_JSON_POINTER;
  }
  return at_pointer(json_pointer);
}
 
#if SIMDJSON_SUPPORTS_CONCEPTS
template <typename Func>
  requires std::invocable<Func, value>
#else
template <typename Func>
#endif
inline error_code object::for_each_at_path_with_wildcard(std::string_view json_path, Func&& callback) noexcept {
  auto result_pair = get_next_key_and_json_path(json_path);
  std::string_view key = result_pair.first;
  std::string_view remaining_path = result_pair.second;
  // Empty key means the path segment could not be parsed (including malformed
  // bracket-quoted keys). Match DOM at_path_with_wildcard and avoid treating
  // "no progress" as a recursive lookup of "".
  if (key.empty()) {
    return INVALID_JSON_POINTER;
  }
  // Handle when its the case for wildcard
  if (key == "*") {
    // Loop through each field in the object
    for (auto field : *this) {
      value val;
      SIMDJSON_TRY(field.value().get(val));
      if (remaining_path.empty()) {
        callback(val);
      } else {
        SIMDJSON_TRY(val.for_each_at_path_with_wildcard(remaining_path, callback));
      }
    }
    return SUCCESS;
  } else {
    value val;
    SIMDJSON_TRY(find_field(key).get(val));
 
    if (remaining_path.empty()) {
      callback(val);
      return SUCCESS;
    } else {
      return val.for_each_at_path_with_wildcard(remaining_path, callback);
    }
  }
}
 
simdjson_inline simdjson_result<size_t> object::count_fields() & noexcept {
  size_t count{0};
  // Important: we do not consume any of the values.
  for(simdjson_unused auto v : *this) { count++; }
  // The above loop will always succeed, but we want to report errors.
  if(iter.error()) { return iter.error(); }
  // We need to move back at the start because we expect users to iterate through
  // the object after counting the number of elements.
  iter.reset_object();
  return count;
}
 
simdjson_inline simdjson_result<bool> object::is_empty() & noexcept {
#if SIMDJSON_DEVELOPMENT_CHECKS
  if (locked) return OUT_OF_ORDER_ITERATION;
#endif
  bool is_not_empty;
  auto error = iter.reset_object().get(is_not_empty);
  if(error) { return error; }
  return !is_not_empty;
}
 
simdjson_inline simdjson_result<bool> object::reset() & noexcept {
#if SIMDJSON_DEVELOPMENT_CHECKS
  if (locked) return OUT_OF_ORDER_ITERATION;
#endif
  return iter.reset_object();
}
 
simdjson_inline object_position object::get_current_position() const noexcept {
  return object_position{iter.position(), iter.json_iter().depth()};
}
 
simdjson_inline error_code object::revert_position(object_position position) noexcept {
#if SIMDJSON_DEVELOPMENT_CHECKS
  if (locked) return OUT_OF_ORDER_ITERATION;
#endif
  // json_iterator::reenter_child() requires the live depth to be exactly
  // one level shallower than the target (matching how every other depth
  // transition in this iterator works), and under SIMDJSON_DEVELOPMENT_CHECKS
  // additionally validates against the parser's per-depth container-start
  // bookkeeping. Neither applies here: depending on what was captured and
  // what has happened since (a scalar field fully consumed, a compound
  // value left open, a find_field() miss that scanned past everything),
  // the live depth when reverting can be any number of levels away from
  // the captured one, and the captured depth is not necessarily a
  // container's own start. reenter_at() moves directly, matching how
  // reset_object() itself repositions without going through reenter_child().
  iter.reenter_at(position.position, position.depth);
  return SUCCESS;
}
 
#if SIMDJSON_DEVELOPMENT_CHECKS
simdjson_inline void object::set_locked(bool _locked) noexcept {
  locked = _locked;
}
#endif
 
#if SIMDJSON_SUPPORTS_CONCEPTS && SIMDJSON_STATIC_REFLECTION
 
template<constevalutil::fixed_string... FieldNames, typename T>
  requires(std::is_class_v<T> && (sizeof...(FieldNames) > 0))
simdjson_warn_unused simdjson_inline error_code object::extract_into(T& out) & noexcept {
  // Helper to check if a field name matches any of the requested fields
  auto should_extract = [](std::string_view field_name) constexpr -> bool {
    return ((FieldNames.view() == field_name) || ...);
  };
 
  // Iterate through all members of T using reflection
  template for (constexpr auto mem : std::define_static_array(
      std::meta::nonstatic_data_members_of(^^T, std::meta::access_context::unchecked()))) {
 
    if constexpr (!std::meta::is_const(mem) && std::meta::is_public(mem)) {
      constexpr std::string_view key = std::define_static_string(std::meta::identifier_of(mem));
 
      // Only extract this field if it's in our list of requested fields
      if constexpr (should_extract(key)) {
        // Try to find and extract the field
        if constexpr (concepts::optional_type<decltype(out.[:mem:])>) {
          // For optional fields, it's ok if they're missing
          auto field_result = find_field_unordered(key);
          if (!field_result.error()) {
            auto error = field_result.get(out.[:mem:]);
            if (error && error != NO_SUCH_FIELD) {
              return error;
            }
          } else if (field_result.error() != NO_SUCH_FIELD) {
            return field_result.error();
          } else {
            out.[:mem:].reset();
          }
        } else {
          // For required fields (in the requested list), fail if missing
          SIMDJSON_TRY((*this)[key].get(out.[:mem:]));
        }
      }
    }
  };
 
  return SUCCESS;
}
 
#endif // SIMDJSON_SUPPORTS_CONCEPTS && SIMDJSON_STATIC_REFLECTION
 
} // namespace ondemand
} // namespace SIMDJSON_IMPLEMENTATION
} // namespace simdjson
 
namespace simdjson {
 
simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::simdjson_result(SIMDJSON_IMPLEMENTATION::ondemand::object &&value) noexcept
    : implementation_simdjson_result_base<SIMDJSON_IMPLEMENTATION::ondemand::object>(std::forward<SIMDJSON_IMPLEMENTATION::ondemand::object>(value)) {}
simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::simdjson_result(error_code error) noexcept
    : implementation_simdjson_result_base<SIMDJSON_IMPLEMENTATION::ondemand::object>(error) {}
 
simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object_iterator> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::begin() & noexcept {
  if (error()) { return error(); }
  return first.begin();
}
simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object_iterator> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::begin() && noexcept {
  if (error()) { return error(); }
  return std::move(first).begin();
}
simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object_iterator> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::end() noexcept {
  if (error()) { return error(); }
  return first.end();
}
simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::find_field_unordered(std::string_view key) & noexcept {
  if (error()) { return error(); }
  return first.find_field_unordered(key);
}
simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::find_field_unordered(std::string_view key) && noexcept {
  if (error()) { return error(); }
  return std::forward<SIMDJSON_IMPLEMENTATION::ondemand::object>(first).find_field_unordered(key);
}
simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::operator[](std::string_view key) & noexcept {
  if (error()) { return error(); }
  return first[key];
}
simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::operator[](std::string_view key) && noexcept {
  if (error()) { return error(); }
  return std::forward<SIMDJSON_IMPLEMENTATION::ondemand::object>(first)[key];
}
simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::find_field(std::string_view key) & noexcept {
  if (error()) { return error(); }
  return first.find_field(key);
}
simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::find_field(std::string_view key) && noexcept {
  if (error()) { return error(); }
  return std::forward<SIMDJSON_IMPLEMENTATION::ondemand::object>(first).find_field(key);
}
 
simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::at_pointer(std::string_view json_pointer) noexcept {
  if (error()) { return error(); }
  return first.at_pointer(json_pointer);
}
 
simdjson_inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::value> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::at_path(
    std::string_view json_path) noexcept {
  if (error()) {
    return error();
  }
  return first.at_path(json_path);
}
 
#if SIMDJSON_SUPPORTS_CONCEPTS
template <typename Func>
  requires std::invocable<Func, SIMDJSON_IMPLEMENTATION::ondemand::value>
#else
template <typename Func>
#endif
simdjson_inline error_code simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::for_each_at_path_with_wildcard(std::string_view json_path, Func&& callback) noexcept {
  if (error()) { return error(); }
  return first.for_each_at_path_with_wildcard(json_path, std::forward<Func>(callback));
}
 
#if SIMDJSON_SUPPORTS_CONCEPTS
template <typename Selector, typename Func>
  requires SIMDJSON_IMPLEMENTATION::ondemand::key_selector_type<Selector> &&
           std::is_invocable_v<Func&, std::size_t, SIMDJSON_IMPLEMENTATION::ondemand::value>
simdjson_inline SIMDJSON_IMPLEMENTATION::ondemand::for_each_result
simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::for_each(Func&& on_match)
    noexcept(std::is_nothrow_invocable_v<Func&, std::size_t, SIMDJSON_IMPLEMENTATION::ondemand::value>) {
  if (error()) { return {error(), 0}; }
  return first.template for_each<Selector>(std::forward<Func>(on_match));
}
 
template <typename Selector, typename... Handlers>
  requires SIMDJSON_IMPLEMENTATION::ondemand::key_selector_type<Selector> &&
           (sizeof...(Handlers) == Selector::size()) &&
           (SIMDJSON_IMPLEMENTATION::ondemand::key_selector_for_each_detail::field_handler<Handlers> && ...)
simdjson_inline SIMDJSON_IMPLEMENTATION::ondemand::for_each_result
simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::for_each(Handlers&&... on_match)
    noexcept(SIMDJSON_IMPLEMENTATION::ondemand::key_selector_for_each_detail::nothrow_field_handlers_v<Handlers...>) {
  if (error()) { return {error(), 0}; }
  return first.template for_each<Selector>(std::forward<Handlers>(on_match)...);
}
 
template <constevalutil::fixed_string... Keys, typename... Handlers>
  requires (sizeof...(Handlers) == sizeof...(Keys)) &&
           (sizeof...(Keys) >= 1) && (sizeof...(Keys) <= 255) &&
           (SIMDJSON_IMPLEMENTATION::ondemand::key_selector_for_each_detail::field_handler<Handlers> && ...)
simdjson_inline SIMDJSON_IMPLEMENTATION::ondemand::for_each_result
simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::for_each(Handlers&&... on_match)
    noexcept(SIMDJSON_IMPLEMENTATION::ondemand::key_selector_for_each_detail::nothrow_field_handlers_v<Handlers...>) {
  if (error()) { return {error(), 0}; }
  return first.template for_each<Keys...>(std::forward<Handlers>(on_match)...);
}
#endif
 
inline simdjson_result<bool> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::reset() noexcept {
  if (error()) { return error(); }
  return first.reset();
}
 
inline simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object_position> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::get_current_position() noexcept {
  if (error()) { return error(); }
  return first.get_current_position();
}
 
inline error_code simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::revert_position(SIMDJSON_IMPLEMENTATION::ondemand::object_position position) noexcept {
  if (error()) { return error(); }
  return first.revert_position(position);
}
 
inline simdjson_result<bool> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::is_empty() noexcept {
  if (error()) { return error(); }
  return first.is_empty();
}
 
simdjson_inline  simdjson_result<size_t> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::count_fields() & noexcept {
  if (error()) { return error(); }
  return first.count_fields();
}
 
simdjson_inline  simdjson_result<std::string_view> simdjson_result<SIMDJSON_IMPLEMENTATION::ondemand::object>::raw_json() noexcept {
  if (error()) { return error(); }
  return first.raw_json();
}
 
} // namespace simdjson
 
#endif // SIMDJSON_GENERIC_ONDEMAND_OBJECT_INL_H