Source: script_interpreter_logging.ml (p.octez-protocol-alpha-libs.18.0.doc.src.octez-protocol-alpha-libs.plugin)

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2415(*****************************************************************************) (* *) (* Open Source License *) (* Copyright (c) 2022 Nomadic Labs <contact@nomadic-labs.com> *) (* Copyright (c) 2022 DaiLambda, Inc. <contact@dailambda,jp> *) (* *) (* Permission is hereby granted, free of charge, to any person obtaining a *) (* copy of this software and associated documentation files (the "Software"),*) (* to deal in the Software without restriction, including without limitation *) (* the rights to use, copy, modify, merge, publish, distribute, sublicense, *) (* and/or sell copies of the Software, and to permit persons to whom the *) (* Software is furnished to do so, subject to the following conditions: *) (* *) (* The above copyright notice and this permission notice shall be included *) (* in all copies or substantial portions of the Software. *) (* *) (* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR*) (* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *) (* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *) (* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER*) (* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING *) (* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER *) (* DEALINGS IN THE SOFTWARE. *) (* *) (*****************************************************************************) open Protocol open Environment open Error_monad open Alpha_context open Script_typed_ir module Stack_utils = struct type kinstr_rewritek = { apply : 'b 'u 'r 'f. ('b, 'u) stack_ty -> ('b, 'u, 'r, 'f) kinstr -> ('b, 'u, 'r, 'f) kinstr; } [@@ocaml.unboxed] (* An existential wrapper around failed [kinstr], whose final stack type is hidden as it is irrelevant. *) type ('a, 's) failed_kinstr_cast = {cast : 'b 'u. ('a, 's, 'b, 'u) kinstr} [@@ocaml.unboxed] (* This is a view on a deconstructed [kinstr]. Its type parameters refer to the type of the viewed [kinstr], while existentials inside describe types of [kinstr]'s components. The [reconstruct] field in each record stores a function which reconstructs the original instruction from its components. *) type ('a, 's, 'r, 'f) ex_split_kinstr = | Ex_split_kinstr : { cont_init_stack : ('b, 'u) stack_ty; continuation : ('b, 'u, 'r, 'f) kinstr; reconstruct : ('b, 'u, 'r, 'f) kinstr -> ('a, 's, 'r, 'f) kinstr; } -> ('a, 's, 'r, 'f) ex_split_kinstr | Ex_split_log : { stack : ('a, 's) stack_ty; continuation : ('a, 's, 'r, 'f) kinstr; reconstruct : ('a, 's, 'r, 'f) kinstr -> ('a, 's, 'r, 'f) kinstr; } -> ('a, 's, 'r, 'f) ex_split_kinstr | Ex_split_loop_may_fail : { body_init_stack : ('b, 'u) stack_ty; body : ('b, 'u, 'r, 'f) kinstr; cont_init_stack : ('c, 'v) stack_ty; continuation : ('c, 'v, 't, 'g) kinstr; reconstruct : ('b, 'u, 'r, 'f) kinstr -> ('c, 'v, 't, 'g) kinstr -> ('a, 's, 't, 'g) kinstr; } -> ('a, 's, 't, 'g) ex_split_kinstr | Ex_split_loop_may_not_fail : { body_init_stack : ('b, 'u) stack_ty; body : ('b, 'u, 'r, 'f) kinstr; continuation : ('c, 'v, 't, 'g) kinstr; aft_body_stack_transform : ('r, 'f) stack_ty -> ('c, 'v) stack_ty tzresult; reconstruct : ('b, 'u, 'r, 'f) kinstr -> ('c, 'v, 't, 'g) kinstr -> ('a, 's, 't, 'g) kinstr; } -> ('a, 's, 't, 'g) ex_split_kinstr | Ex_split_if : { left_init_stack : ('b, 'u) stack_ty; left_branch : ('b, 'u, 'r, 'f) kinstr; right_init_stack : ('c, 'v) stack_ty; right_branch : ('c, 'v, 'r, 'f) kinstr; continuation : ('r, 'f, 't, 'g) kinstr; reconstruct : ('b, 'u, 'r, 'f) kinstr -> ('c, 'v, 'r, 'f) kinstr -> ('r, 'f, 't, 'g) kinstr -> ('a, 's, 't, 'g) kinstr; } -> ('a, 's, 't, 'g) ex_split_kinstr | Ex_split_halt : Script.location -> ('a, 's, 'a, 's) ex_split_kinstr | Ex_split_failwith : { location : Script.location; arg_ty : ('a, _) ty; cast : ('a, 's) failed_kinstr_cast; } -> ('a, 's, 'r, 'f) ex_split_kinstr (** An existential container for an instruction paired with its initial stack type. This is used internally to pack together execution branches with different initial stack types but the same final stack type (which we want to compute). *) type ('r, 'f) ex_init_stack_ty = | Ex_init_stack_ty : ('a, 's) stack_ty * ('a, 's, 'r, 'f) kinstr -> ('r, 'f) ex_init_stack_ty let rec stack_prefix_preservation_witness_split_input : type a s b t c u d v. (b, t, c, u, a, s, d, v) stack_prefix_preservation_witness -> (a, s) stack_ty -> (b, t) stack_ty = fun w s -> match (w, s) with | KPrefix (_, _, w), Item_t (_, s) -> stack_prefix_preservation_witness_split_input w s | KRest, s -> s let rec stack_prefix_preservation_witness_split_output : type a s b t c u d v. (b, t, c, u, a, s, d, v) stack_prefix_preservation_witness -> (c, u) stack_ty -> (d, v) stack_ty = fun w s -> match (w, s) with | KPrefix (_, a, w), s -> Item_t (a, stack_prefix_preservation_witness_split_output w s) | KRest, s -> s (* We apply this function to optional type information which must be present if functions from this module were called. Use with care. *) let assert_some = function None -> assert false | Some x -> x let kinstr_split : type a s r f. (a, s) stack_ty -> (a, s, r, f) kinstr -> (a, s, r, f) ex_split_kinstr tzresult = let open Result_syntax in fun s i -> let dummy = Micheline.dummy_location in match (i, s) with | IDrop (loc, k), Item_t (_a, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IDrop (loc, k)); } | IDup (loc, k), Item_t (a, s) -> let s = Item_t (a, Item_t (a, s)) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IDup (loc, k)); } | ISwap (loc, k), Item_t (a, Item_t (b, s)) -> let s = Item_t (b, Item_t (a, s)) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ISwap (loc, k)); } | IPush (loc, a, x, k), s -> let s = Item_t (a, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IPush (loc, a, x, k)); } | IUnit (loc, k), s -> let s = Item_t (unit_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IUnit (loc, k)); } | ICons_pair (loc, k), Item_t (a, Item_t (b, s)) -> let+ (Ty_ex_c c) = pair_t dummy a b in let s = Item_t (c, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ICons_pair (loc, k)); } | ICar (loc, k), Item_t (Pair_t (a, _b, _meta, _), s) -> let s = Item_t (a, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ICar (loc, k)); } | ICdr (loc, k), Item_t (Pair_t (_a, b, _meta, _), s) -> let s = Item_t (b, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ICdr (loc, k)); } | IUnpair (loc, k), Item_t (Pair_t (a, b, _meta, _), s) -> let s = Item_t (a, Item_t (b, s)) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IUnpair (loc, k)); } | ICons_some (loc, k), Item_t (a, s) -> let+ o = option_t dummy a in let s = Item_t (o, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ICons_some (loc, k)); } | ICons_none (loc, a, k), s -> let+ o = option_t dummy a in let s = Item_t (o, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ICons_none (loc, a, k)); } | ( IIf_none {loc; branch_if_none; branch_if_some; k}, Item_t (Option_t (a, _meta, _), s) ) -> return @@ Ex_split_if { left_init_stack = s; left_branch = branch_if_none; right_init_stack = Item_t (a, s); right_branch = branch_if_some; continuation = k; reconstruct = (fun branch_if_none branch_if_some k -> IIf_none {loc; branch_if_none; branch_if_some; k}); } | IOpt_map {loc; body; k}, Item_t (Option_t (a, _meta, _), s) -> return @@ Ex_split_loop_may_not_fail { body_init_stack = Item_t (a, s); body; continuation = k; aft_body_stack_transform = (function | Item_t (b, s) -> let+ o = option_t dummy b in Item_t (o, s)); reconstruct = (fun body k -> IOpt_map {loc; body; k}); } | ICons_left (loc, b, k), Item_t (a, s) -> let+ (Ty_ex_c c) = or_t dummy a b in let s = Item_t (c, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ICons_left (loc, b, k)); } | ICons_right (loc, a, k), Item_t (b, s) -> let+ (Ty_ex_c c) = or_t dummy a b in let s = Item_t (c, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ICons_right (loc, a, k)); } | ( IIf_left {loc; branch_if_left; branch_if_right; k}, Item_t (Or_t (a, b, _meta, _), s) ) -> return @@ Ex_split_if { left_init_stack = Item_t (a, s); left_branch = branch_if_left; right_init_stack = Item_t (b, s); right_branch = branch_if_right; continuation = k; reconstruct = (fun branch_if_left branch_if_right k -> IIf_left {loc; branch_if_left; branch_if_right; k}); } | ICons_list (loc, k), Item_t (_a, Item_t (l, s)) -> let s = Item_t (l, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ICons_list (loc, k)); } | INil (loc, a, k), s -> let+ l = list_t dummy a in let s = Item_t (l, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> INil (loc, a, k)); } | ( IIf_cons {loc; branch_if_cons; branch_if_nil; k}, Item_t ((List_t (a, _meta) as l), s) ) -> return @@ Ex_split_if { left_init_stack = Item_t (a, Item_t (l, s)); left_branch = branch_if_cons; right_init_stack = s; right_branch = branch_if_nil; continuation = k; reconstruct = (fun branch_if_cons branch_if_nil k -> IIf_cons {loc; branch_if_cons; branch_if_nil; k}); } | IList_map (loc, body, ty, k), Item_t (List_t (a, _meta), s) -> let s = Item_t (a, s) in return @@ Ex_split_loop_may_not_fail { body_init_stack = s; body; continuation = k; aft_body_stack_transform = (function | Item_t (b, s) -> let+ l = list_t dummy b in Item_t (l, s)); reconstruct = (fun body k -> IList_map (loc, body, ty, k)); } | IList_iter (loc, ty, body, k), Item_t (List_t (a, _meta), s) -> return @@ Ex_split_loop_may_fail { body_init_stack = Item_t (a, s); body; cont_init_stack = s; continuation = k; reconstruct = (fun body k -> IList_iter (loc, ty, body, k)); } | IList_size (loc, k), Item_t (_l, s) -> let s = Item_t (nat_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IList_size (loc, k)); } | IEmpty_set (loc, a, k), s -> let+ b = set_t dummy a in let s = Item_t (b, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IEmpty_set (loc, a, k)); } | ISet_iter (loc, a, body, k), Item_t (_b, s) -> return @@ Ex_split_loop_may_fail { body_init_stack = Item_t (assert_some a, s); body; cont_init_stack = s; continuation = k; reconstruct = (fun body k -> ISet_iter (loc, a, body, k)); } | ISet_mem (loc, k), Item_t (_, Item_t (_, s)) -> let s = Item_t (bool_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ISet_mem (loc, k)); } | ISet_update (loc, k), Item_t (_, Item_t (_, s)) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ISet_update (loc, k)); } | ISet_size (loc, k), Item_t (_, s) -> let s = Item_t (nat_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ISet_size (loc, k)); } | IEmpty_map (loc, cty, vty, k), s -> let+ m = map_t dummy cty (assert_some vty) in let s = Item_t (m, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IEmpty_map (loc, cty, vty, k)); } | IMap_map (loc, ty, body, k), Item_t (Map_t (kty, vty, _meta), s) -> let (Map_t (key_ty, _, _)) = assert_some ty in let+ (Ty_ex_c p) = pair_t dummy key_ty vty in Ex_split_loop_may_not_fail { body_init_stack = Item_t (p, s); body; continuation = k; aft_body_stack_transform = (fun (Item_t (b, s)) -> let+ m = map_t dummy kty b in Item_t (m, s)); reconstruct = (fun body k -> IMap_map (loc, ty, body, k)); } | IMap_iter (loc, kvty, body, k), Item_t (_, stack) -> return @@ Ex_split_loop_may_fail { body_init_stack = Item_t (assert_some kvty, stack); body; cont_init_stack = stack; continuation = k; reconstruct = (fun body k -> IMap_iter (loc, kvty, body, k)); } | IMap_mem (loc, k), Item_t (_, Item_t (_, s)) -> let s = Item_t (bool_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IMap_mem (loc, k)); } | IMap_get (loc, k), Item_t (_, Item_t (Map_t (_kty, vty, _meta), s)) -> let+ o = option_t dummy vty in let s = Item_t (o, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IMap_get (loc, k)); } | IMap_update (loc, k), Item_t (_, Item_t (_, s)) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IMap_update (loc, k)); } | IMap_get_and_update (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IMap_get_and_update (loc, k)); } | IMap_size (loc, k), Item_t (_, s) -> let s = Item_t (nat_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IMap_size (loc, k)); } | IEmpty_big_map (loc, cty, ty, k), s -> let+ b = big_map_t dummy cty ty in let s = Item_t (b, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IEmpty_big_map (loc, cty, ty, k)); } | IBig_map_mem (loc, k), Item_t (_, Item_t (_, s)) -> let s = Item_t (bool_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IBig_map_mem (loc, k)); } | ( IBig_map_get (loc, k), Item_t (_, Item_t (Big_map_t (_kty, vty, _meta), s)) ) -> let+ o = option_t dummy vty in let s = Item_t (o, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IBig_map_get (loc, k)); } | IBig_map_update (loc, k), Item_t (_, Item_t (_, s)) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IBig_map_update (loc, k)); } | IBig_map_get_and_update (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IBig_map_get_and_update (loc, k)); } | IConcat_string (loc, k), Item_t (_, s) -> let s = Item_t (string_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IConcat_string (loc, k)); } | IConcat_string_pair (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IConcat_string_pair (loc, k)); } | ISlice_string (loc, k), Item_t (_, Item_t (_, Item_t (_, s))) -> let s = Item_t (option_string_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ISlice_string (loc, k)); } | IString_size (loc, k), Item_t (_, s) -> let s = Item_t (nat_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IString_size (loc, k)); } | IConcat_bytes (loc, k), Item_t (_, s) -> let s = Item_t (bytes_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IConcat_bytes (loc, k)); } | IConcat_bytes_pair (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IConcat_bytes_pair (loc, k)); } | ISlice_bytes (loc, k), Item_t (_, Item_t (_, Item_t (_, s))) -> let s = Item_t (option_bytes_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ISlice_bytes (loc, k)); } | IBytes_size (loc, k), Item_t (_, s) -> let s = Item_t (nat_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IBytes_size (loc, k)); } | ILsl_bytes (loc, k), Item_t (_, Item_t (_, s)) -> let s = Item_t (bytes_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ILsl_bytes (loc, k)); } | ILsr_bytes (loc, k), Item_t (_, Item_t (_, s)) -> let s = Item_t (bytes_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ILsr_bytes (loc, k)); } | IOr_bytes (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IOr_bytes (loc, k)); } | IAnd_bytes (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IAnd_bytes (loc, k)); } | IXor_bytes (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IXor_bytes (loc, k)); } | INot_bytes (loc, k), Item_t (_, s) -> let s = Item_t (bytes_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> INot_bytes (loc, k)); } | IBytes_nat (loc, k), Item_t (_, s) -> let s = Item_t (bytes_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IBytes_nat (loc, k)); } | INat_bytes (loc, k), Item_t (_, s) -> let s = Item_t (nat_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> INat_bytes (loc, k)); } | IBytes_int (loc, k), Item_t (_, s) -> let s = Item_t (bytes_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IBytes_int (loc, k)); } | IInt_bytes (loc, k), Item_t (_, s) -> let s = Item_t (int_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IInt_bytes (loc, k)); } | IAdd_seconds_to_timestamp (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IAdd_seconds_to_timestamp (loc, k)); } | IAdd_timestamp_to_seconds (loc, k), Item_t (_, Item_t (_, s)) -> let s = Item_t (timestamp_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IAdd_timestamp_to_seconds (loc, k)); } | ISub_timestamp_seconds (loc, k), Item_t (_, Item_t (_, s)) -> let s = Item_t (timestamp_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ISub_timestamp_seconds (loc, k)); } | IDiff_timestamps (loc, k), Item_t (_, Item_t (_, s)) -> let s = Item_t (int_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IDiff_timestamps (loc, k)); } | IAdd_tez (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IAdd_tez (loc, k)); } | ISub_tez (loc, k), Item_t (_, Item_t (_, s)) -> let s = Item_t (option_mutez_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ISub_tez (loc, k)); } | ISub_tez_legacy (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ISub_tez_legacy (loc, k)); } | IMul_teznat (loc, k), Item_t (_, Item_t (_, s)) -> let s = Item_t (mutez_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IMul_teznat (loc, k)); } | IMul_nattez (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IMul_nattez (loc, k)); } | IEdiv_teznat (loc, k), Item_t (_, Item_t (_, s)) -> let s = Item_t (option_pair_mutez_mutez_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IEdiv_teznat (loc, k)); } | IEdiv_tez (loc, k), Item_t (_, Item_t (_, s)) -> let s = Item_t (option_pair_nat_mutez_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IEdiv_tez (loc, k)); } | IOr (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IOr (loc, k)); } | IAnd (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IAnd (loc, k)); } | IXor (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IXor (loc, k)); } | INot (loc, k), s -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> INot (loc, k)); } | IIs_nat (loc, k), Item_t (_, s) -> let s = Item_t (option_nat_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IIs_nat (loc, k)); } | INeg (loc, k), Item_t (_, s) -> let s = Item_t (int_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> INeg (loc, k)); } | IAbs_int (loc, k), Item_t (_, s) -> let s = Item_t (nat_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IAbs_int (loc, k)); } | IInt_nat (loc, k), Item_t (_, s) -> let s = Item_t (int_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IInt_nat (loc, k)); } | IAdd_int (loc, k), Item_t (_, Item_t (_, s)) -> let s = Item_t (int_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IAdd_int (loc, k)); } | IAdd_nat (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IAdd_nat (loc, k)); } | ISub_int (loc, k), Item_t (_, Item_t (_, s)) -> let s = Item_t (int_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ISub_int (loc, k)); } | IMul_int (loc, k), Item_t (_, Item_t (_, s)) -> let s = Item_t (int_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IMul_int (loc, k)); } | IMul_nat (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IMul_nat (loc, k)); } | IEdiv_int (loc, k), Item_t (_, Item_t (_, s)) -> let s = Item_t (option_pair_int_nat_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IEdiv_int (loc, k)); } | IEdiv_nat (loc, k), Item_t (_, Item_t (a, s)) -> let* (Ty_ex_c p) = pair_t dummy a nat_t in let+ o = option_t dummy p in let s = Item_t (o, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IEdiv_nat (loc, k)); } | ILsl_nat (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ILsl_nat (loc, k)); } | ILsr_nat (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ILsr_nat (loc, k)); } | IOr_nat (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IOr_nat (loc, k)); } | IAnd_nat (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IAnd_nat (loc, k)); } | IAnd_int_nat (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IAnd_int_nat (loc, k)); } | IXor_nat (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IXor_nat (loc, k)); } | INot_int (loc, k), Item_t (_, s) -> let s = Item_t (int_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> INot_int (loc, k)); } | IIf {loc; branch_if_true; branch_if_false; k}, Item_t (_, s) -> return @@ Ex_split_if { left_init_stack = s; left_branch = branch_if_true; right_init_stack = s; right_branch = branch_if_false; continuation = k; reconstruct = (fun branch_if_true branch_if_false k -> IIf {loc; branch_if_true; branch_if_false; k}); } | ILoop (loc, body, k), Item_t (_, s) -> return @@ Ex_split_loop_may_fail { body_init_stack = s; body; cont_init_stack = s; continuation = k; reconstruct = (fun body k -> ILoop (loc, body, k)); } | ILoop_left (loc, kl, kr), Item_t (Or_t (a, b, _meta, _), s) -> return @@ Ex_split_loop_may_fail { body_init_stack = Item_t (a, s); body = kl; cont_init_stack = Item_t (b, s); continuation = kr; reconstruct = (fun kl kr -> ILoop_left (loc, kl, kr)); } | IDip (loc, body, ty, k), Item_t (a, s) -> return @@ Ex_split_loop_may_not_fail { body_init_stack = s; body; continuation = k; aft_body_stack_transform = (fun s -> return (Item_t (a, s))); reconstruct = (fun body k -> IDip (loc, body, ty, k)); } | IExec (loc, sty, k), Item_t (_, Item_t (Lambda_t (_, b, _meta), s)) -> let s = Item_t (b, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IExec (loc, sty, k)); } | ( IApply (loc, ty, k), Item_t (_, Item_t (Lambda_t (Pair_t (_, a, _, _), b, _), s)) ) -> let+ l = lambda_t dummy a b in let s = Item_t (l, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IApply (loc, ty, k)); } | ILambda (loc, (Lam (desc, _) as l), k), s -> let (Item_t (a, Bot_t)) = desc.kbef in let (Item_t (b, Bot_t)) = desc.kaft in let+ lam = lambda_t dummy a b in let s = Item_t (lam, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ILambda (loc, l, k)); } | ILambda (loc, (LamRec (desc, _) as l), k), s -> let (Item_t (a, Item_t (Lambda_t _, Bot_t))) = desc.kbef in let (Item_t (b, Bot_t)) = desc.kaft in let+ lam = lambda_t dummy a b in let s = Item_t (lam, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ILambda (loc, l, k)); } | IFailwith (location, arg_ty), _ -> return @@ Ex_split_failwith {location; arg_ty; cast = {cast = IFailwith (location, arg_ty)}} | ICompare (loc, ty, k), Item_t (_, Item_t (_, s)) -> let s = Item_t (int_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ICompare (loc, ty, k)); } | IEq (loc, k), Item_t (_, s) -> let s = Item_t (bool_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IEq (loc, k)); } | INeq (loc, k), Item_t (_, s) -> let s = Item_t (bool_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> INeq (loc, k)); } | ILt (loc, k), Item_t (_, s) -> let s = Item_t (bool_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ILt (loc, k)); } | IGt (loc, k), Item_t (_, s) -> let s = Item_t (bool_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IGt (loc, k)); } | ILe (loc, k), Item_t (_, s) -> let s = Item_t (bool_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ILe (loc, k)); } | IGe (loc, k), Item_t (_, s) -> let s = Item_t (bool_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IGe (loc, k)); } | IAddress (loc, k), Item_t (_, s) -> let s = Item_t (address_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IAddress (loc, k)); } | IContract (loc, ty, code, k), Item_t (_, s) -> let* c = contract_t dummy ty in let+ o = option_t dummy c in let s = Item_t (o, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IContract (loc, ty, code, k)); } | ITransfer_tokens (loc, k), Item_t (_, Item_t (_, Item_t (_, s))) -> let s = Item_t (operation_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ITransfer_tokens (loc, k)); } | ( IView (loc, (View_signature {output_ty; _} as view_signature), sty, k), Item_t (_, Item_t (_, s)) ) -> let+ b = option_t dummy output_ty in let s = Item_t (b, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IView (loc, view_signature, sty, k)); } | IImplicit_account (loc, k), Item_t (_, s) -> let s = Item_t (contract_unit_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IImplicit_account (loc, k)); } | ( ICreate_contract {loc; storage_type; code; k}, Item_t (_, Item_t (_, Item_t (_, s))) ) -> return @@ Ex_split_kinstr { cont_init_stack = Item_t (operation_t, Item_t (address_t, s)); continuation = k; reconstruct = (fun k -> ICreate_contract {loc; storage_type; code; k}); } | ISet_delegate (loc, k), Item_t (_, s) -> let s = Item_t (operation_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ISet_delegate (loc, k)); } | INow (loc, k), s -> let s = Item_t (timestamp_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> INow (loc, k)); } | IBalance (loc, k), s -> let s = Item_t (mutez_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IBalance (loc, k)); } | ILevel (loc, k), s -> let s = Item_t (nat_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ILevel (loc, k)); } | ICheck_signature (loc, k), Item_t (_, Item_t (_, Item_t (_, s))) -> let s = Item_t (bool_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ICheck_signature (loc, k)); } | IHash_key (loc, k), Item_t (_, s) -> let s = Item_t (key_hash_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IHash_key (loc, k)); } | IPack (loc, ty, k), Item_t (_, s) -> let s = Item_t (bytes_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IPack (loc, ty, k)); } | IUnpack (loc, ty, k), Item_t (_, s) -> let+ o = option_t dummy ty in let s = Item_t (o, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IUnpack (loc, ty, k)); } | IBlake2b (loc, k), s -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IBlake2b (loc, k)); } | ISha256 (loc, k), s -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ISha256 (loc, k)); } | ISha512 (loc, k), s -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ISha512 (loc, k)); } | ISource (loc, k), s -> let s = Item_t (address_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ISource (loc, k)); } | ISender (loc, k), s -> let s = Item_t (address_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ISender (loc, k)); } | ISelf (loc, ty, ep, k), s -> let+ c = contract_t dummy ty in let s = Item_t (c, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ISelf (loc, ty, ep, k)); } | ISelf_address (loc, k), s -> let s = Item_t (address_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ISelf_address (loc, k)); } | IAmount (loc, k), s -> let s = Item_t (mutez_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IAmount (loc, k)); } | ISapling_empty_state (loc, memo_size, k), s -> return @@ Ex_split_kinstr { cont_init_stack = Item_t (sapling_state_t ~memo_size, s); continuation = k; reconstruct = (fun k -> ISapling_empty_state (loc, memo_size, k)); } | ( ISapling_verify_update_deprecated (loc, k), Item_t (_, Item_t (state_ty, s)) ) -> let* (Ty_ex_c pair_ty) = pair_t dummy int_t state_ty in let+ ty = option_t dummy pair_ty in Ex_split_kinstr { cont_init_stack = Item_t (ty, s); continuation = k; reconstruct = (fun k -> ISapling_verify_update_deprecated (loc, k)); } | ISapling_verify_update (loc, k), Item_t (_, Item_t (state_ty, s)) -> let* (Ty_ex_c int_state_ty) = pair_t dummy int_t state_ty in let* (Ty_ex_c pair_ty) = pair_t dummy bytes_t int_state_ty in let+ ty = option_t dummy pair_ty in let s = Item_t (ty, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ISapling_verify_update (loc, k)); } | IDig (loc, n, p, k), s -> let (Item_t (b, s)) = stack_prefix_preservation_witness_split_input p s in let s = stack_prefix_preservation_witness_split_output p s in let s = Item_t (b, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IDig (loc, n, p, k)); } | IDug (loc, n, p, k), Item_t (a, s) -> let s = stack_prefix_preservation_witness_split_input p s in let s = Item_t (a, s) in let s = stack_prefix_preservation_witness_split_output p s in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IDug (loc, n, p, k)); } | IDipn (loc, n, p, k1, k2), s -> return @@ Ex_split_loop_may_not_fail { body_init_stack = stack_prefix_preservation_witness_split_input p s; body = k1; continuation = k2; aft_body_stack_transform = (fun s -> return @@ stack_prefix_preservation_witness_split_output p s); reconstruct = (fun k1 k2 -> IDipn (loc, n, p, k1, k2)); } | IDropn (loc, n, p, k), s -> let s = stack_prefix_preservation_witness_split_input p s in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IDropn (loc, n, p, k)); } | IChainId (loc, k), s -> let s = Item_t (chain_id_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IChainId (loc, k)); } | INever location, Item_t (arg_ty, _) -> return @@ Ex_split_failwith {location; arg_ty; cast = {cast = INever location}} | IVoting_power (loc, k), Item_t (_, s) -> let s = Item_t (nat_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IVoting_power (loc, k)); } | ITotal_voting_power (loc, k), s -> let s = Item_t (nat_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ITotal_voting_power (loc, k)); } | IKeccak (loc, k), s -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IKeccak (loc, k)); } | ISha3 (loc, k), s -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ISha3 (loc, k)); } | IAdd_bls12_381_g1 (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IAdd_bls12_381_g1 (loc, k)); } | IAdd_bls12_381_g2 (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IAdd_bls12_381_g2 (loc, k)); } | IAdd_bls12_381_fr (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IAdd_bls12_381_fr (loc, k)); } | IMul_bls12_381_g1 (loc, k), Item_t (g1, Item_t (_, s)) -> let s = Item_t (g1, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IMul_bls12_381_g1 (loc, k)); } | IMul_bls12_381_g2 (loc, k), Item_t (g2, Item_t (_, s)) -> let s = Item_t (g2, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IMul_bls12_381_g2 (loc, k)); } | IMul_bls12_381_fr (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IMul_bls12_381_fr (loc, k)); } | IMul_bls12_381_z_fr (loc, k), Item_t (fr, Item_t (_, s)) -> let s = Item_t (fr, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IMul_bls12_381_z_fr (loc, k)); } | IMul_bls12_381_fr_z (loc, k), Item_t (_, s) -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IMul_bls12_381_fr_z (loc, k)); } | IInt_bls12_381_fr (loc, k), Item_t (_, s) -> let s = Item_t (int_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IInt_bls12_381_fr (loc, k)); } | INeg_bls12_381_g1 (loc, k), s -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> INeg_bls12_381_g1 (loc, k)); } | INeg_bls12_381_g2 (loc, k), s -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> INeg_bls12_381_g2 (loc, k)); } | INeg_bls12_381_fr (loc, k), s -> return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> INeg_bls12_381_fr (loc, k)); } | IPairing_check_bls12_381 (loc, k), Item_t (_, s) -> let s = Item_t (bool_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IPairing_check_bls12_381 (loc, k)); } | IComb (loc, n, p, k), s -> let rec aux : type a b s c d t. (a, b * s) stack_ty -> (a, b, s, c, d, t) comb_gadt_witness -> (c, d * t) stack_ty tzresult = fun s w -> match (w, s) with | Comb_one, s -> return s | Comb_succ w, Item_t (a, s) -> let* (Item_t (c, t)) = aux s w in let+ (Ty_ex_c p) = pair_t dummy a c in Item_t (p, t) in let+ s = aux s p in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IComb (loc, n, p, k)); } | IUncomb (loc, n, p, k), s -> let rec aux : type a b s c d t. (a, b * s) stack_ty -> (a, b, s, c, d, t) uncomb_gadt_witness -> (c, d * t) stack_ty = fun s w -> match (w, s) with | Uncomb_one, s -> s | Uncomb_succ w, Item_t (Pair_t (a, b, _meta, _), s) -> let s = aux (Item_t (b, s)) w in Item_t (a, s) in let s = aux s p in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IUncomb (loc, n, p, k)); } | IComb_get (loc, n, p, k), Item_t (c, s) -> let rec aux : type c cc a. (c, cc) ty -> (c, a) comb_get_gadt_witness -> a ty_ex_c = fun c w -> match (w, c) with | Comb_get_zero, c -> Ty_ex_c c | Comb_get_one, Pair_t (hd, _tl, _meta, _) -> Ty_ex_c hd | Comb_get_plus_two w, Pair_t (_hd, tl, _meta, _) -> aux tl w in let s = let (Ty_ex_c ty) = aux c p in Item_t (ty, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IComb_get (loc, n, p, k)); } | IComb_set (loc, n, p, k), Item_t (a, Item_t (b, s)) -> let rec aux : type a b c ca cb. (a, ca) ty -> (b, cb) ty -> (a, b, c) comb_set_gadt_witness -> c ty_ex_c tzresult = fun a b w -> match (w, b) with | Comb_set_zero, _ -> return (Ty_ex_c a) | Comb_set_one, Pair_t (_hd, tl, _meta, _) -> pair_t dummy a tl | Comb_set_plus_two w, Pair_t (hd, tl, _meta, _) -> let* (Ty_ex_c c) = aux a tl w in pair_t dummy hd c in let+ (Ty_ex_c c) = aux a b p in let s = Item_t (c, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IComb_set (loc, n, p, k)); } | IDup_n (loc, n, p, k), s -> let rec aux : type a b s t. (a, b * s) stack_ty -> (a, b, s, t) dup_n_gadt_witness -> t ty_ex_c = fun s w -> match (w, s) with | Dup_n_succ w, Item_t (_, s) -> aux s w | Dup_n_zero, Item_t (a, _) -> Ty_ex_c a in let s = let (Ty_ex_c ty) = aux s p in Item_t (ty, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IDup_n (loc, n, p, k)); } | ITicket (loc, cty, k), Item_t (_, Item_t (_, s)) -> let* ty = ticket_t dummy (assert_some cty) in let+ t = option_t loc ty in let s = Item_t (t, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ITicket (loc, cty, k)); } | ITicket_deprecated (loc, cty, k), Item_t (_, Item_t (_, s)) -> let+ t = ticket_t dummy (assert_some cty) in let s = Item_t (t, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ITicket_deprecated (loc, cty, k)); } | IRead_ticket (loc, a, k), s -> let* (Ty_ex_c p) = pair_t dummy (assert_some a) nat_t in let+ (Ty_ex_c t) = pair_t dummy address_t p in let s = Item_t (t, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IRead_ticket (loc, a, k)); } | ISplit_ticket (loc, k), Item_t (t, Item_t (_, s)) -> let* (Ty_ex_c p) = pair_t dummy t t in let+ o = option_t dummy p in let s = Item_t (o, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> ISplit_ticket (loc, k)); } | IJoin_tickets (loc, ty, k), Item_t (Pair_t (t, _t, _meta, _), s) -> let+ o = option_t dummy t in let s = Item_t (o, s) in Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IJoin_tickets (loc, ty, k)); } | IOpen_chest (loc, k), Item_t (_, Item_t (_, Item_t (_, s))) -> let s = Item_t (option_bytes_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IOpen_chest (loc, k)); } | IMin_block_time (loc, k), s -> let s = Item_t (nat_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IMin_block_time (loc, k)); } | IEmit {loc; ty; unparsed_ty; tag; k}, Item_t (_, s) -> let s = Item_t (operation_t, s) in return @@ Ex_split_kinstr { cont_init_stack = s; continuation = k; reconstruct = (fun k -> IEmit {loc; ty; unparsed_ty; tag; k}); } | IEmit _, Bot_t -> . | IHalt loc, _s -> return @@ Ex_split_halt loc | ILog (loc, _stack_ty, event, logger, continuation), stack -> return @@ Ex_split_log { stack; continuation; reconstruct = (fun k -> ILog (loc, s, event, logger, k)); } (* [kinstr_final_stack_type sty instr] computes the stack type after [instr] has been executed, assuming [sty] is the type of the stack prior to execution. For the rare instructions which can return stacks of any type ([FAILWITH] and [NEVER]), this function returns [None]. *) let rec kinstr_final_stack_type : type a s r f. (a, s) stack_ty -> (a, s, r, f) kinstr -> (r, f) stack_ty option tzresult = let open Result_syntax in fun s i -> let* ex_split_kinstr = kinstr_split s i in match ex_split_kinstr with | Ex_split_kinstr {cont_init_stack; continuation; _} -> kinstr_final_stack_type cont_init_stack continuation | Ex_split_log {stack; continuation; _} -> kinstr_final_stack_type stack continuation | Ex_split_loop_may_fail {cont_init_stack; continuation; _} -> kinstr_final_stack_type cont_init_stack continuation | Ex_split_loop_may_not_fail {body_init_stack; body; continuation; aft_body_stack_transform; _} -> ( let* sty = kinstr_final_stack_type body_init_stack body in match sty with | Some after_body -> let* before_k = aft_body_stack_transform after_body in kinstr_final_stack_type before_k continuation | None -> return_none) | Ex_split_if { left_init_stack; left_branch; right_init_stack; right_branch; continuation; _; } -> ( let* sty = kinstr_final_stack_type left_init_stack left_branch in match sty with | Some after_branch_a -> kinstr_final_stack_type after_branch_a continuation | None -> ( let* sty = kinstr_final_stack_type right_init_stack right_branch in match sty with | Some after_branch_b -> kinstr_final_stack_type after_branch_b continuation | None -> return_none)) | Ex_split_halt _ -> return_some s | Ex_split_failwith {cast = {cast = _}; _} -> return_none (* The same as [kinstr_final_stack_type], but selects from multiple possible execution branches. If the first instr ends with FAILWITH, it will try the next and so on. Note that all instructions must result in the same stack type. *) let rec branched_final_stack_type : type r f. (r, f) ex_init_stack_ty list -> (r, f) stack_ty option tzresult = let open Result_syntax in function | [] -> return_none | Ex_init_stack_ty (init_sty, branch) :: bs -> ( let* sty = kinstr_final_stack_type init_sty branch in match sty with | Some _ as sty -> return sty | None -> branched_final_stack_type bs) let kinstr_rewritek : type a s r f. (a, s) stack_ty -> (a, s, r, f) kinstr -> kinstr_rewritek -> (a, s, r, f) kinstr tzresult = let open Result_syntax in fun s i f -> let* ex_split_kinstr = kinstr_split s i in match ex_split_kinstr with | Ex_split_kinstr {cont_init_stack; continuation; reconstruct} -> return @@ reconstruct (f.apply cont_init_stack continuation) | Ex_split_log {continuation; reconstruct; _} -> return @@ reconstruct continuation | Ex_split_loop_may_fail {body_init_stack; body; cont_init_stack; continuation; reconstruct} -> return @@ reconstruct (f.apply body_init_stack body) (f.apply cont_init_stack continuation) | Ex_split_loop_may_not_fail { body_init_stack; body; continuation; aft_body_stack_transform; reconstruct; } -> let+ k = let* sty = kinstr_final_stack_type body_init_stack body in match sty with | Some after_body -> let+ before_k = aft_body_stack_transform after_body in f.apply before_k continuation | None -> return continuation in reconstruct (f.apply body_init_stack body) k | Ex_split_if { left_init_stack; left_branch; right_init_stack; right_branch; continuation; reconstruct; } -> let+ k = let* sty = kinstr_final_stack_type left_init_stack left_branch in match sty with | Some after_left_branch -> return @@ f.apply after_left_branch continuation | None -> ( let* sty = kinstr_final_stack_type right_init_stack right_branch in match sty with | Some after_right_branch -> return @@ f.apply after_right_branch continuation | None -> return continuation) in reconstruct (f.apply left_init_stack left_branch) (f.apply right_init_stack right_branch) k | Ex_split_halt loc -> return @@ IHalt loc | Ex_split_failwith {location; arg_ty; _} -> return @@ IFailwith (location, arg_ty) (** [dipn_stack_ty witness stack_ty] returns the type of the stack on which instructions inside dipped block will be operating. *) let rec dipn_stack_ty : type a s e z c u d w. (a, s, e, z, c, u, d, w) stack_prefix_preservation_witness -> (c, u) stack_ty -> (a, s) stack_ty = fun witness stack -> match (witness, stack) with | KPrefix (_, _, witness'), Item_t (_, sty) -> dipn_stack_ty witness' sty | KRest, sty -> sty (** [instrument_cont logger sty] creates a function instrumenting continuations starting from the stack type described by [sty]. Instrumentation consists in wrapping inner continuations in [KLog] continuation so that logging continues. *) let instrument_cont : type a b c d. logger -> (a, b) stack_ty -> (a, b, c, d) continuation -> (a, b, c, d) continuation = fun logger sty -> function KLog _ as k -> k | k -> KLog (k, sty, logger) end module type Logger_base = sig val log_interp : ('a, 's, 'b, 'f, 'c, 'u) logging_function val log_entry : ('a, 's, 'b, 'f, 'a, 's) logging_function val log_control : ('a, 's, 'b, 'f) continuation -> unit val log_exit : ('a, 's, 'b, 'f, 'c, 'u) logging_function val get_log : unit -> execution_trace option tzresult Lwt.t end module Logger (Base : Logger_base) = struct open Stack_utils open Local_gas_counter open Script_interpreter_defs open Script_interpreter.Internals.Raw (** [log_entry ctxt gas instr sty accu stack] simply calls the [Base.log_entry] function with the appropriate arguments. *) let log_entry ctxt gas k sty accu stack = let ctxt = Local_gas_counter.update_context gas ctxt in Base.log_entry k ctxt (kinstr_location k) sty (accu, stack) (** [log_exit ctxt gas loc instr sty accu stack] simply calls the [Base.log_exit] function with the appropriate arguments. *) let log_exit ctxt gas loc_prev k sty accu stack = let ctxt = Local_gas_counter.update_context gas ctxt in Base.log_exit k ctxt loc_prev sty (accu, stack) (** [log_control continuation] simply calls the [Base.log_control] function with the appropriate arguments. *) let log_control ks = Base.log_control ks (** [log_kinstr logger sty instr] returns [instr] prefixed by an [ILog] instruction to log the first instruction in [instr]. *) let log_kinstr logger sty i = ILog (kinstr_location i, sty, LogEntry, logger, i) (* [log_next_kinstr logger i] instruments the next instruction of [i] with [ILog] instructions to make sure it will be logged. This instrumentation has a performance cost, but importantly, it is only ever paid when logging is enabled. Otherwise, the possibility to instrument the script is costless. Notice that the instrumentation breaks the sharing of continuations that is normally enforced between branches of conditionals. This has a performance cost. Anyway, the instrumentation allocates many new [ILog] instructions and [KLog] continuations which makes the execution of instrumented code significantly slower than non-instrumented code. "Zero-cost logging" means that the normal non-instrumented execution is not impacted by the ability to instrument it, not that the logging itself has no cost. *) let log_next_kinstr logger sty i = let apply sty k = ILog ( kinstr_location k, sty, LogExit (kinstr_location i), logger, log_kinstr logger sty k ) in kinstr_rewritek sty i {apply} (** [log_next_continuation logger sty cont] instruments the next continuation in [cont] with [KLog] continuations to ensure logging. This instrumentation has a performance cost, but importantly, it is only ever paid when logging is enabled. Otherwise, the possibility to instrument the script is costless. *) let log_next_continuation : type a b c d. logger -> (a, b) stack_ty -> (a, b, c, d) continuation -> (a, b, c, d) continuation tzresult = let open Result_syntax in fun logger stack_ty cont -> let enable_log sty ki = log_kinstr logger sty ki in match cont with | KCons (ki, k) -> ( let ki' = enable_log stack_ty ki in let+ sty = kinstr_final_stack_type stack_ty ki in match sty with | None -> KCons (ki', k) | Some sty -> KCons (ki', instrument_cont logger sty k)) | KLoop_in (ki, k) -> let (Item_t (Bool_t, sty)) = stack_ty in return @@ KLoop_in (enable_log sty ki, instrument_cont logger sty k) | KReturn (stack, sty, k) -> let k' = instrument_cont logger (assert_some sty) k in return @@ KReturn (stack, sty, k') | KLoop_in_left (ki, k) -> let (Item_t (Or_t (a_ty, b_ty, _, _), rest)) = stack_ty in let ki' = enable_log (Item_t (a_ty, rest)) ki in let k' = instrument_cont logger (Item_t (b_ty, rest)) k in return @@ KLoop_in_left (ki', k') | KUndip (x, ty, k) -> let k' = instrument_cont logger (Item_t (assert_some ty, stack_ty)) k in return @@ KUndip (x, ty, k') | KIter (body, xty, xs, k) -> let body' = enable_log (Item_t (assert_some xty, stack_ty)) body in let k' = instrument_cont logger stack_ty k in return @@ KIter (body', xty, xs, k') | KList_enter_body (body, xs, ys, ty, len, k) -> let k' = instrument_cont logger (Item_t (assert_some ty, stack_ty)) k in return @@ KList_enter_body (body, xs, ys, ty, len, k') | KList_exit_body (body, xs, ys, ty, len, k) -> let (Item_t (_, sty)) = stack_ty in let k' = instrument_cont logger (Item_t (assert_some ty, sty)) k in return @@ KList_exit_body (body, xs, ys, ty, len, k') | KMap_enter_body (body, xs, ys, ty, k) -> let k' = instrument_cont logger (Item_t (assert_some ty, stack_ty)) k in return @@ KMap_enter_body (body, xs, ys, ty, k') | KMap_exit_body (body, xs, ys, yk, ty, k) -> let (Item_t (_, sty)) = stack_ty in let k' = instrument_cont logger (Item_t (assert_some ty, sty)) k in return @@ KMap_exit_body (body, xs, ys, yk, ty, k') | KMap_head (_, _) | KView_exit (_, _) | KLog _ (* This case should never happen. *) | KNil -> return cont (* Zero-cost logging ================= *) (* The following functions insert a logging instruction to continue the logging process in the next execution steps. There is a special treatment of instructions that generate fresh continuations: we pass a constructor as argument to their evaluation rules so that they can instrument these fresh continuations by themselves. Instructions that create continuations without calling specialized functions have their branches from [step] function duplicated and adjusted here. This on-the-fly instrumentation of the execution allows zero-cost logging since logging instructions are only introduced if an initial logging continuation is pushed in the initial continuation that starts the evaluation. *) let ilog : type a s b t r f. logger -> logging_event -> (a, s) stack_ty -> (a, s, b, t, r, f) step_type = let open Lwt_result_syntax in fun logger event sty ((ctxt, _) as g) gas k ks accu stack -> (match (k, event) with | ILog _, LogEntry -> () | _, LogEntry -> log_entry ctxt gas k sty accu stack | _, LogExit prev_loc -> log_exit ctxt gas prev_loc k sty accu stack) ; let*? k = log_next_kinstr logger sty k in (* We need to match on instructions that create continuations so that we can instrument those continuations with [KLog] (see comment above). For functions that don't do this, we simply call [step], as they don't require any special treatment. *) match k with | IIf_none {branch_if_none; branch_if_some; k; _} -> ( let (Item_t (Option_t (ty, _, _), rest)) = sty in let*? sty_opt = branched_final_stack_type [ Ex_init_stack_ty (rest, branch_if_none); Ex_init_stack_ty (Item_t (ty, rest), branch_if_some); ] in let ks' = match sty_opt with | None -> KCons (k, ks) | Some sty' -> instrument_cont logger sty' @@ KCons (k, ks) in match accu with | None -> let accu, stack = stack in (step [@ocaml.tailcall]) g gas branch_if_none ks' accu stack | Some v -> (step [@ocaml.tailcall]) g gas branch_if_some ks' v stack) | IOpt_map {body; k; loc = _} -> ( match accu with | None -> (step [@ocaml.tailcall]) g gas k ks None stack | Some v -> let (Item_t (Option_t (ty, _, _), rest)) = sty in let bsty = Item_t (ty, rest) in let kmap_head = KMap_head (Option.some, KCons (k, ks)) in let*? sty_opt = kinstr_final_stack_type bsty body in let ks' = match sty_opt with | None -> kmap_head | Some sty' -> instrument_cont logger sty' kmap_head in (step [@ocaml.tailcall]) g gas body ks' v stack) | IIf_left {branch_if_left; branch_if_right; k; _} -> ( let (Item_t (Or_t (lty, rty, _, _), rest)) = sty in let*? sty_opt = branched_final_stack_type [ Ex_init_stack_ty (Item_t (lty, rest), branch_if_left); Ex_init_stack_ty (Item_t (rty, rest), branch_if_right); ] in let k' = match sty_opt with | None -> KCons (k, ks) | Some sty' -> instrument_cont logger sty' @@ KCons (k, ks) in match accu with | L v -> (step [@ocaml.tailcall]) g gas branch_if_left k' v stack | R v -> (step [@ocaml.tailcall]) g gas branch_if_right k' v stack) | IIf_cons {branch_if_cons; branch_if_nil; k; _} -> ( let (Item_t ((List_t (elty, _) as lty), rest)) = sty in let*? sty' = branched_final_stack_type [ Ex_init_stack_ty (rest, branch_if_nil); Ex_init_stack_ty (Item_t (elty, Item_t (lty, rest)), branch_if_cons); ] in let k' = match sty' with | None -> KCons (k, ks) | Some sty' -> instrument_cont logger sty' @@ KCons (k, ks) in match Script_list.uncons accu with | None -> let accu, stack = stack in (step [@ocaml.tailcall]) g gas branch_if_nil k' accu stack | Some (hd, tl) -> (step [@ocaml.tailcall]) g gas branch_if_cons k' hd (tl, stack)) | IList_map (_, body, ty, k) -> let (Item_t (_, sty')) = sty in let instrument = instrument_cont logger sty' in (ilist_map [@ocaml.tailcall]) instrument g gas body k ks ty accu stack | IList_iter (_, ty, body, k) -> let (Item_t (_, sty')) = sty in let instrument = instrument_cont logger sty' in (ilist_iter [@ocaml.tailcall]) instrument g gas body ty k ks accu stack | ISet_iter (_, ty, body, k) -> let (Item_t (_, rest)) = sty in let instrument = instrument_cont logger rest in (iset_iter [@ocaml.tailcall]) instrument g gas body ty k ks accu stack | IMap_map (_, ty, body, k) -> let (Item_t (_, rest)) = sty in let instrument = instrument_cont logger rest in (imap_map [@ocaml.tailcall]) instrument g gas body k ks ty accu stack | IMap_iter (_, kvty, body, k) -> let (Item_t (_, rest)) = sty in let instrument = instrument_cont logger rest in (imap_iter [@ocaml.tailcall]) instrument g gas body kvty k ks accu stack | IMul_teznat (loc, k) -> (imul_teznat [@ocaml.tailcall]) (Some logger) g gas loc k ks accu stack | IMul_nattez (loc, k) -> (imul_nattez [@ocaml.tailcall]) (Some logger) g gas loc k ks accu stack | ILsl_nat (loc, k) -> (ilsl_nat [@ocaml.tailcall]) (Some logger) g gas loc k ks accu stack | ILsr_nat (loc, k) -> (ilsr_nat [@ocaml.tailcall]) (Some logger) g gas loc k ks accu stack | IIf {branch_if_true; branch_if_false; k; _} -> let (Item_t (Bool_t, rest)) = sty in let*? sty' = branched_final_stack_type [ Ex_init_stack_ty (rest, branch_if_true); Ex_init_stack_ty (rest, branch_if_false); ] in let k' = match sty' with | None -> KCons (k, ks) | Some sty' -> instrument_cont logger sty' @@ KCons (k, ks) in let res, stack = stack in if accu then (step [@ocaml.tailcall]) g gas branch_if_true k' res stack else (step [@ocaml.tailcall]) g gas branch_if_false k' res stack | ILoop (_, body, k) -> let ks = instrument_cont logger sty @@ KLoop_in (body, KCons (k, ks)) in (next [@ocaml.tailcall]) g gas ks accu stack | ILoop_left (_, bl, br) -> let ks = instrument_cont logger sty @@ KLoop_in_left (bl, KCons (br, ks)) in (next [@ocaml.tailcall]) g gas ks accu stack | IDip (_, b, ty, k) -> let (Item_t (_, rest)) = sty in let*? rest' = kinstr_final_stack_type rest b in let ign = accu in let ks = match rest' with | None -> KUndip (ign, ty, KCons (k, ks)) | Some rest' -> instrument_cont logger rest' (KUndip (ign, ty, KCons (k, ks))) in let accu, stack = stack in (step [@ocaml.tailcall]) g gas b ks accu stack | IExec (_, stack_ty, k) -> let (Item_t (_, Item_t (Lambda_t (_, ret, _), _))) = sty in let sty' = Item_t (ret, Bot_t) in let instrument = instrument_cont logger sty' in iexec instrument (Some logger) g gas stack_ty k ks accu stack | IFailwith (kloc, tv) -> let {ifailwith} = ifailwith in (ifailwith [@ocaml.tailcall]) (Some logger) g gas kloc tv accu | IDipn (_, _n, n', b, k) -> let accu, stack, restore_prefix = kundip n' accu stack k in let dipped_sty = dipn_stack_ty n' sty in let*? sty' = kinstr_final_stack_type dipped_sty b in let ks = match sty' with | None -> KCons (restore_prefix, ks) | Some sty' -> instrument_cont logger sty' @@ KCons (restore_prefix, ks) in (step [@ocaml.tailcall]) g gas b ks accu stack | IView (_, (View_signature {output_ty; _} as view_signature), stack_ty, k) -> let sty' = Item_t (output_ty, Bot_t) in let instrument = instrument_cont logger sty' in (iview [@ocaml.tailcall]) instrument g gas view_signature stack_ty k ks accu stack | _ -> (step [@ocaml.tailcall]) g gas k ks accu stack [@@inline] let klog : type a s r f. logger -> outdated_context * step_constants -> local_gas_counter -> (a, s) stack_ty -> (a, s, r, f) continuation -> (a, s, r, f) continuation -> a -> s -> (r * f * outdated_context * local_gas_counter) tzresult Lwt.t = let open Lwt_result_syntax in fun logger g gas stack_ty k0 ks accu stack -> let ty_for_logging_unsafe = function (* This function is only called when logging is enabled. If that's the case, the elaborator must have been called with [logging_enabled] option, which ensures that this will not be [None]. Realistically, it can happen that the [logging_enabled] option was omitted, resulting in a crash here. But this is acceptable, because logging is never enabled during block validation, so the layer 1 is safe. *) | None -> assert false | Some ty -> ty in (match ks with KLog _ -> () | _ -> log_control ks) ; let*? continuation = log_next_continuation logger stack_ty ks in match continuation with | KCons (ki, k) -> (step [@ocaml.tailcall]) g gas ki k accu stack | KLoop_in (ki, k) -> (kloop_in [@ocaml.tailcall]) g gas k0 ki k accu stack | KReturn (_, _, _) as k -> (next [@ocaml.tailcall]) g gas k accu stack | KLoop_in_left (ki, k) -> (kloop_in_left [@ocaml.tailcall]) g gas k0 ki k accu stack | KUndip (_, _, _) as k -> (next [@ocaml.tailcall]) g gas k accu stack | KIter (body, xty, xs, k) -> let instrument = instrument_cont logger stack_ty in (kiter [@ocaml.tailcall]) instrument g gas body xty xs k accu stack | KList_enter_body (body, xs, ys, ty_opt, len, k) -> let instrument = let ty = ty_for_logging_unsafe ty_opt in let (List_t (vty, _)) = ty in let sty = Item_t (vty, stack_ty) in instrument_cont logger sty in (klist_enter [@ocaml.tailcall]) instrument g gas body xs ys ty_opt len k accu stack | KList_exit_body (body, xs, ys, ty_opt, len, k) -> let (Item_t (_, rest)) = stack_ty in let instrument = instrument_cont logger rest in (klist_exit [@ocaml.tailcall]) instrument g gas body xs ys ty_opt len k accu stack | KMap_enter_body (body, xs, ys, ty_opt, k) -> let instrument = let ty = ty_for_logging_unsafe ty_opt in let (Map_t (_, vty, _)) = ty in let sty = Item_t (vty, stack_ty) in instrument_cont logger sty in (kmap_enter [@ocaml.tailcall]) instrument g gas body xs ty_opt ys k accu stack | KMap_exit_body (body, xs, ys, yk, ty_opt, k) -> let (Item_t (_, rest)) = stack_ty in let instrument = instrument_cont logger rest in (kmap_exit [@ocaml.tailcall]) instrument g gas body xs ty_opt ys yk k accu stack | KMap_head (f, k) -> (next [@ocaml.tailcall]) g gas k (f accu) stack | KView_exit (scs, k) -> (next [@ocaml.tailcall]) (fst g, scs) gas k accu stack | KLog _ as k -> (* This case should never happen. *) (next [@ocaml.tailcall]) g gas k accu stack | KNil as k -> (next [@ocaml.tailcall]) g gas k accu stack [@@inline] end let make (module Base : Logger_base) = let module Logger = Logger (Base) in let open Logger in let open Base in {log_interp; get_log; log_kinstr; klog; ilog}