class RuboCop::AST::NodePattern::Compiler::SequenceSubcompiler

def compile_sequence
  # rubocop:disable Layout/CommentIndentation
  compiler.with_temp_variables do |cur_child, cur_index, previous_index|
    @cur_child_var = cur_child        # To hold the current child node
    @cur_index_var = cur_index        # To hold the current child index (always >= 0)
    @prev_index_var = previous_index  # To hold the child index before we enter the
                                      # variadic nodes
    @cur_index = :seq_head            # Can be any of:
                                      # :seq_head : when the current child is actually the
                                      #             sequence head
                                      # :variadic_mode : child index held by @cur_index_var
                                      # >= 0 : when the current child index is known
                                      #        (from the beginning)
                                      # < 0 :  when the index is known from the end,
                                      #        where -1 is *past the end*,
                                      #        -2 is the last child, etc...
                                      #        This shift of 1 from standard Ruby indices
                                      #        is stored in DELTA
    @in_sync = false                  # `true` iff `@cur_child_var` and `@cur_index_var`
                                      # correspond to `@cur_index`
                                      # Must be true if `@cur_index` is `:variadic_mode`
    compile_terms
  end
  # rubocop:enable Layout/CommentIndentation
end