Files
json/include/nlohmann
Niels Lohmann e32de7bb8c De-duplicate from_json.hpp's map and array-fallback bodies
Several from_json() overload pairs in from_json.hpp were copies of each
other, so a fix has to be applied twice (as #5681 already does):

- from_json(..., std::map&) and from_json(..., std::unordered_map&) for
  non-string keys had identical 16-line bodies: array check, m.clear(),
  pair check loop, m.emplace(...). Route both through a new
  from_json_pair_array_to_map(j, m) helper.
- The from_json_array_impl priority_tag<1> and priority_tag<0> fallbacks
  ran the same std::transform/std::inserter loop, differing only in
  ret.reserve(j.size()). Merge them into one body and, modeled on the
  existing from_json_object_reserve, add a from_json_array_reserve pair
  so the reserve() call is only made for ConstructibleArrayType that
  support it.

Error ids (type_error.302), messages, diagnostic paths ((at(0)/at(1))
and behavior for types with/without reserve() are unchanged; only the
duplication is removed.

Public API: no change.

Overlaps #5681, which changes the "&j" to "&p" line in both map bodies;
the shared helper here should make that a one-line change instead of two
on rebase.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

#5708 item 5
2026-09-30 18:16:32 +02:00
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