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(** Tezos Protocol Implementation - Protocol Signature Instance *)

type validation_mode =
  | Application of {
      block_header : Alpha_context.Block_header.t;
      baker : Alpha_context.public_key_hash;
      block_delay : Alpha_context.Period.t;
    }
  | Partial_application of {
      block_header : Alpha_context.Block_header.t;
      baker : Alpha_context.public_key_hash;
      block_delay : Alpha_context.Period.t;
    }
  | Partial_construction of {predecessor : Block_hash.t}
  | Full_construction of {
      predecessor : Block_hash.t;
      protocol_data : Alpha_context.Block_header.contents;
      baker : Alpha_context.public_key_hash;
      block_delay : Alpha_context.Period.t;
    }

type validation_state = {
  mode : validation_mode;
  chain_id : Chain_id.t;
  ctxt : Alpha_context.t;
  op_count : int;
}

type operation_data = Alpha_context.packed_protocol_data

type operation = Alpha_context.packed_operation = {
  shell : Operation.shell_header;
  protocol_data : operation_data;
}

include
  Updater.PROTOCOL
    with type block_header_data = Alpha_context.Block_header.protocol_data
     and type block_header_metadata = Apply_results.block_metadata
     and type block_header = Alpha_context.Block_header.t
     and type operation_data := operation_data
     and type operation_receipt = Apply_results.packed_operation_metadata
     and type operation := operation
     and type validation_state := validation_state