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reach lib reach ir counter.ex

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lib/reach/ir/counter.ex

defmodule Reach.IR.Counter do
  @moduledoc "Monotonic ID counter for IR node construction."

  @opaque t :: :atomics.atomics_ref()

  @spec new() :: t()
  def new do
    :atomics.new(1, signed: true)
  end

  @spec next(t()) :: non_neg_integer()
  def next(ref) do
    :atomics.add_get(ref, 1, 1) - 1
  end
end

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