Prism::Translation::Parser::Compiler#find_forwarding

find_forwarding(node)

lib/prism/translation/parser/compiler.rb View on GitHub ↗

# File tmp/rubies/ruby-3.4.1/lib/prism/translation/parser/compiler.rb, line 1935
def find_forwarding(node)
  return [] if node.nil?

  forwarding = []
  forwarding << :* if node.rest.is_a?(RestParameterNode) && node.rest.name.nil?
  forwarding << :** if node.keyword_rest.is_a?(KeywordRestParameterNode) && node.keyword_rest.name.nil?
  forwarding << :& if !node.block.nil? && node.block.name.nil?
  forwarding |= [:&, :"..."] if node.keyword_rest.is_a?(ForwardingParameterNode)

  forwarding
end

When *, **, &, or … are used as an argument in a method call, we check if they were allowed by the current context. To determine that we build this lookup table.

See also #copy_compiler #multi_target_elements #chomped_bytesize #numeric_negate also in 4.0

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