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Implement Rubocop DSL RBI compiler #1046

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Implement Rubocop DSL RBI compiler #1046

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ef1eff5
Add `extenders_of` helper method
sambostock Jan 25, 2024
ca0be67
Implement RuboCop DSL compiler
sambostock Jan 25, 2024
3c9ee4b
Rely on requiring `rubocop-ast` in extension
sambostock Jan 26, 2024
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Add extenders_of helper method 
This method is similar to `descendants_of`, but returns all modules
which extend the given module. That is, all modules (including classes),
whose singleton class (or parent thereof) includes the given module.
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@sambostock
sambostock committed Jan 29, 2024
commit ef1eff576fcc1541a2bb21fe89e9ad33f3862806
27 changes: 27 additions & 0 deletions lib/tapioca/runtime/reflection.rb
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Expand Up @@ -172,6 +172,33 @@ def descendants_of(klass)
T.unsafe(result)
end

# Returns an array with all modules which extend the supplied module
# (i.e. all modules whose singleton class, or ancestor thereof, includes the supplied module).
#
# module M; end
# extenders_of(M) # => []
#
# module E
# extend M
# end
# extenders_of(M) # => [E]
#
# class P
# extend M
# end
# extenders_of(M) # => [E, P]
#
# class C < P; end
# extenders_of(M) # => [E, P, C]
sig { params(mod: Module).returns(T::Array[Module]) }
def extenders_of(mod)
result = ObjectSpace.each_object(Module).select do |m|
T.cast(m, Module).singleton_class.included_modules.include?(mod)
end

T.cast(result, T::Array[Module])
end

# Examines the call stack to identify the closest location where a "require" is performed
# by searching for the label "<top (required)>". If none is found, it returns the location
# labeled "<main>", which is the original call site.
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