meta/logic.hpp added a second set of type-level boolean helpers
(cxpr_and, cxpr_or, cxpr_not, ...) next to the existing conjunction
and negation in type_traits.hpp. It was used only by one static_assert
in from_json_tuple_impl, two of its templates were never used, and it
was the only header without the license banner and relied on
transitive includes for <type_traits>.
Add the missing disjunction next to conjunction and negation, use the
three in the static_assert, and delete logic.hpp together with its
BUILD.bazel entry. same_sign now uses disjunction as well, which
resolves the 2022 TODO waiting for such a trait.
The static_assert accepts and rejects the same types as before. Only
names in nlohmann::detail change; behavior, public API and ABI are
unchanged.
Part of #5708
Signed-off-by: Niels Lohmann <mail@nlohmann.me>
Niels Lohmann
31883d06a8