Added a safety guard for double wrapping.

[Jack12816]

First things first: thank you for this awesome gem and your work! ❤️

- What is it good for

I accidentally hit funny errors when wrapping a ros object in a new row object like this: RecursiveOpenStruct.new(RecursiveOpenStruct.new({a: true})). Then I digged into this and found different behavior for OpenStruct.

Show more examples

# Reference how OpenStruct works:

» OpenStruct.new({a: true})
# => #<OpenStruct a=true>
» OpenStruct.new(OpenStruct.new({a: true}))
# => #<OpenStruct a=true>
» OpenStruct.new(OpenStruct.new({a: true})).a
# => true
» a = OpenStruct.new({a: true}); b = OpenStruct.new(a); a.object_id == b.object_id
# => false

# Before the patch:

» RecursiveOpenStruct.new({a: true})
# => #<RecursiveOpenStruct a=true>
» RecursiveOpenStruct.new(RecursiveOpenStruct.new({a: true}))
# => #<RecursiveOpenStruct:0x00007f84ebefe120 ...>
» RecursiveOpenStruct.new(RecursiveOpenStruct.new({a: true})).a
# => NoMethodError: undefined method `has_key?' for #<RecursiveOpenStruct a=true> (NoMethodError)
#                   from gems/recursive-open-struct-2.0.0/lib/recursive_open_struct.rb:205
#                   in 'RecursiveOpenStruct#_get_key_from_table_'
» a = RecursiveOpenStruct.new({a: true}); b = RecursiveOpenStruct.new(a); a.object_id == b.object_id
# => false

# After the patch:

» RecursiveOpenStruct.new({a: true})
# => #<RecursiveOpenStruct a=true>
» RecursiveOpenStruct.new(RecursiveOpenStruct.new({a: true}))
# => #<RecursiveOpenStruct a=true>
» RecursiveOpenStruct.new(RecursiveOpenStruct.new({a: true})).a
# => true
» a = RecursiveOpenStruct.new({a: true}); b = RecursiveOpenStruct.new(a); a.object_id == b.object_id
# => false

- What I did

I just added a safety guard on the class constructor to unpack ros/os (or children of them) objects first. This leads to deep copies.

- A picture of a cute animal (not mandatory but encouraged)

[aetherknight]

Tests are failing due to changes out side of this pull request. jruby-head is failing, I think because I'm pinning to an older version of the setup-ruby action. I'll get a fix for that added soon.

[aetherknight]

@Jack12816 when you get a chance, can you merge or rebase to my current main branch? It contains fixes for the CI test runs.

[Jack12816]

Will do in a couple hours :)

[Jack12816]

@aetherknight I rebased against upstream main.

[Jack12816]

I'll fix the broken specs tomorrow. I didn't tested the older rubies locally - sorry.