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delta_crdt

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Implementations of δ-CRDTs

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delta_crdt lib delta_crdt semi_lattice.ex
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lib/delta_crdt/semi_lattice.ex 

defprotocol DeltaCrdt.SemiLattice do

  @fallback_to_any true



  def join(semilattice1, semilattice2)

  def bottom?(semilattice)

  def minimum_delta(state, delta)

  def compress(semilattice)

end



defimpl DeltaCrdt.SemiLattice, for: Any do

  def join(%{state: :bottom} = s1, %{state: :bottom} = s2) do

    %{s1 | causal_context: DeltaCrdt.CausalContext.join(s1.causal_context, s2.causal_context)}

  end



  def join(s1, %{__struct__: struct} = s2) do

    DeltaCrdt.SemiLattice.join(Map.merge(struct.new(), s1), s2)

  end



  def minimum_delta(state, delta), do: {join(state, delta), delta}



  def bottom?(%{state: :bottom}), do: true

  def bottom?(_), do: false



  def compress(s), do: s

end