Peter Hawkins 64b5d8cd11 Update benchmark Python bindings for nanobind 2.0, and update to nanobind 2.0. (#1817) ... Incorporates the nanobind_bazel change from https://github.com/google/benchmark/pull/1795. nanobind 2.0 reworked the nanobind::enum_ class so it uses a real Python enum or intenum rather than its previous hand-rolled implementation. https://nanobind.readthedocs.io/en/latest/changelog.html#version-2-0-0-may-23-2024 As a consequence of that change, nanobind now checks when casting an integer to a enum value that the integer corresponds to a valid enum. Counter::Flags is a bitmask, and many combinations are not valid enum members. This change: a) sets nb::is_arithmetic(), which means Counter::Flags becomes an IntEnum that can be freely cast to an integer. b) defines the | operator for flags to return an integer, not an enum, avoiding the error. c) changes Counter's constructor to accept an int, not a Counter::Flags enum. Since Counter::Flags is an IntEnum now, it can be freely coerced to an int. If https://github.com/wjakob/nanobind/pull/599 is merged into nanobind, then we can perhaps use a flag enum here instead.		2024-07-18 16:54:02 +01:00
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python/google_benchmark	Update benchmark Python bindings for nanobind 2.0, and update to nanobind 2.0. (#1817)	2024-07-18 16:54:02 +01:00