Gem::Source#decode_content_addressable_tuples

# File tmp/rubies/ruby-4.1.0-preview1/lib/rubygems/source.rb, line 211
def decode_content_addressable_tuples(tuples, latest: false)
  ca_tuples = tuples.select(&:content_address)
  return tuples if ca_tuples.empty?

  decoded_tuples = ca_tuples.group_by(&:name).flat_map do |name, name_tuples|
    rows = name_tuples.map do |tuple|
      [tuple.name, tuple.version, tuple.version.to_s, tuple.content_address]
    end

    content_addressable_tuples(name, rows)
  end

  decoded_by_key = decoded_tuples.to_h do |tuple|
    [[tuple.name, tuple.version, tuple.content_address], tuple]
  end

  decoded = tuples.filter_map do |tuple|
    if tuple.content_address
      decoded_by_key[[tuple.name, tuple.version, tuple.content_address]]
    else
      tuple
    end
  end

  return decoded unless latest

  decoded.group_by(&:name).flat_map do |_, name_tuples|
    max_versions_by_platform(name_tuples)
  end
end