Remove object_id use in OpenStruct#inspect
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This was referenced Dec 18, 2023
amomchilov
commented
Dec 18, 2023
| # Returns a string containing a detailed summary of the keys and values. | ||
| # | ||
| def inspect | ||
| ids = (Thread.current[InspectKey] ||= Set.new.compare_by_identity) |
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Using an identity Set here matches what pp does:
https://github.com/ruby/ruby/blob/e8064c6c2c317be78953b4d19226368580af0dca/lib/pp.rb#L146-L161
amomchilov
commented
Dec 18, 2023
| @@ -380,27 +380,59 @@ def delete_field(name, &block) | |||
| end | |||
| end | |||
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| def self.__inspect_supports_identity_set? | |||
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Found this while auditing uses of
object_idinruby/ruby. Pulled out from ruby/ruby#9276.This PR replaces look-ups into an Array by
object_ids, with an identity Set (seeSet#compare_by_identity). This has the same semantics but is faster and doesn't trigger allocation of IDs for these objects.On quirk here is that the
Thread.current[:__inspect_key__]value used byOpenStruct#inspectis also shared withSet#inspect. This PR provides two implementations of#inspect, depending on whether or not the matching version ofsetgem is also using an identity set. See ruby/set#33.