Mavryk_001_PtAtLas_test_helpers.Dummy_zk_rollupDummy ZK Rollup for testing the ZKRU integration in the protocol. The library Plompiler is used to build the circuits (in a module V as verifier) and the corresponding functions to produce the inputs for the circuits (in a module P as prover).
The state of this rollup is a boolean value, which will be represented with a scalar value of zero for false and one for true.
This RU has only one operation, with op_code 0. In addition to the common header (see Zk_rollup_operation_repr), this operation has as payload one scalar representing a boolean value.
The transition function f for this rollup is:
f : operation -> state -> state
f (Op b) s = if b = s then not s else sThat is, the state bool is flipped only if the operation's payload is equal to the current state.
The operation can be used publicly or in a private batch. The circuits that describe the RU are:
"op": for a single public operation."batch-"[N]: for a batch of N private operations. N is determined by the batch_size parameter to the Operator functor."fee": the trivial fees circuit, since this RU has no concept of fees.NB: the "op" circuit does not add any constraints over the operation's exit_validity other than it being in {0, 1}. This means that the dummy rollup can be used to test deposits/withdrawals, but the rollup will not perform any monetary bookkeeping.
Helper types and modules
Empty types to represent bounds
module Bound : sig ... endBounds required for the dummy rollup.
module Bounded : sig ... endModules to manipulate bounded integers, both as OCaml values and in circuit representation.
module Types : sig ... endTypes used for the Dummy Rollup circuits. This module is split into:
module V (L : Plompiler.LIB) : sig ... endPlompiler circuits for the dummy rollup