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pass_strategy_synthesis/model_with_structures/analyzer.ml
ProgramSnail 84d1ce7eb5 structures: model fixes, analyzer part
2026-04-05 21:45:18 +00:00

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module Functional =
struct
(* --- types --- *)
type data = int
type read_cap = Rd | NRd
type write_cap = AlwaysWr | MayWr | NeverWr
type copy_cap = Cp | NCp
type in_cap = In | NIn
type out_cap = Out | NOut
type tag = read_cap * write_cap * copy_cap * in_cap * out_cap
type path = VarP of data | DerefP of path | AccessP of path * data
type argtype = UnitT | RefT of tag * argtype | TupleT of argtype list | FunT of data
type argmem = VarM of data | RefM of argmem | TupleM of argmem list | FunM
type stmt = Call of data * path list | CallLam of path * path list | Read of path | Write of path | Choice of stmt list * stmt list
type body = stmt list
type fun_decl = argtype list * body
type prog = fun_decl list * fun_decl
(* --- exceptions --- *)
exception Incorrect_memory_access of int
exception Ref_rvalue_argument of int
exception Incorrect_const_cast of int
exception Invalid_argument_tag of int
exception Incompatible_states
exception Incompatible_path_and_type
exception Incompatible_path_and_mem
exception Incompatible_path_and_type_for_tag
(* --- static interpreter (no rec) --- *)
(* TODO: allow data (rvalue) in calls ?? *)
type arg = RValue | LValue of path
type value = UnitV | UndefV | BotV
type env = (int * (argmem * argtype)) list
(* env * memory * last unused memory * visited functions *)
type state = env * value list * int * int list
(* --- *)
let rec list_zip_with f xs ys = match xs, ys with (* TODO: alternative from stdlib *)
| x :: xs, y :: ys -> f x y :: list_zip_with f xs ys
| _, _ -> []
(* --- combination --- *)
let value_combine (left : value) (right : value) : value = match left, right with
| UnitV, UnitV -> UnitV
| BotV, BotV -> BotV
| _, _ -> UndefV (* NOTE: should be expanded in relational interpreter to not use ineq (?) *)
let memory_combine (left : value list) (right : value list) : value list =
list_zip_with value_combine left right
let state_combine (left : state) (right : state) : state = match left, right with
(lenv, lmem, lmem_len, lvisited), (renv, rmem, rmem_len, rvisited) ->
if lenv != renv || lmem_len != rmem_len then raise Incompatible_states
else (lenv, memory_combine lmem rmem, lmem_len, List.append lvisited rvisited)
(* TODO: union visited lists instead ? *)
(* --- tag accessors --- *)
let is_read (tag : tag) : bool = match tag with
| (Rd, _, _, _, _) -> true
| _ -> false
let is_always_write (tag : tag) : bool = match tag with
| (_, AlwaysWr, _, _, _) -> true
| _ -> false
let is_may_write (tag : tag) : bool = match tag with
| (_, AlwaysWr, _, _, _) -> true
| (_, MayWr, _, _, _) -> true
| _ -> false
let is_never_write (tag : tag) : bool = match tag with
| (_, NeverWr, _, _, _) -> true
| _ -> false
let is_copy (tag : tag) : bool = match tag with
| (_, _, Cp, _, _) -> true
| _ -> false
let is_in (tag : tag) : bool = match tag with
| (_, _, _, In, _) -> true
| _ -> false
let is_out (tag : tag) : bool = match tag with
| (_, _, _, _, Out) -> true
| _ -> false
(* --- *)
let rec list_replace xs id value = match (xs, id) with
| (_x :: xs, 0) -> value :: xs
| (x :: xs, _n) -> x :: list_replace xs (id - 1) value
| ([], _) -> raise Not_found
let inv_id (mem_len : int) (id : data) : data = mem_len - id - 1
(* --- path accessors --- *)
let rec pathtype (t : argtype) (p : path) : argtype = match t, p with
| t, VarP x -> t
| RefT (tag, t), DerefP p -> pathtype t p
| TupleT ts, AccessP (p, n) -> pathtype (List.nth ts n) p
| _, _ -> raise Incompatible_path_and_type
let rec pathmem (m : argmem) (p : path) : data = match m, p with
| VarM m, VarP x -> m
| RefM m, DerefP p -> pathmem m p
| TupleM ms, AccessP (p, n) -> pathmem (List.nth ms n) p
| _, _ -> raise Incompatible_path_and_mem
let rec pathtag (t : argtype) (p : path) : tag = match t, p with
| RefT (tag, t), VarP x -> tag
| RefT (tag, t), DerefP p -> pathtag t p
| TupleT ts, AccessP (p, n) -> pathtag (List.nth ts n) p
| _, _ -> raise Incompatible_path_and_type_for_tag
let rec pathvar (p : path) : data = match p with
| VarP x -> x
| DerefP p -> pathvar p
| AccessP (p, n) -> pathvar p
let typeof (env : env) (p : path) : argtype = pathtype (snd (List.assoc (pathvar p) env)) p
let accessmem (env : env) (p : path) : data = pathmem (fst (List.assoc (pathvar p) env)) p
let argtag (env : env) (p : path) : tag = pathtag (snd (List.assoc (pathvar p) env)) p
(* TODO: check indices *)
let access_get (env : env) (mem : value list) (mem_len : data) (p : path) : value = List.nth mem @@ inv_id mem_len @@ accessmem env p
let access_set (env : env) (mem : value list) (mem_len : data) (p : path) (value : value) : value list = list_replace mem (inv_id mem_len @@ accessmem env p) value
(* --- *)
let visited_add (state : state) (id : data) : state =
match state with (env, mem, mem_len, visited) -> (env, mem, mem_len, id :: visited)
let visited_check (state : state) (id : data) : bool =
match state with (_, _, _, visited) -> List.exists (fun i -> i == id) visited
(* --- *)
(* TODO: replacewith more useful path versions *)
let env_get (state : state) (id : data) : (argmem * argtype) =
match state with (env, _mem, _mem_len, _visited) -> List.assoc id env
let env_add (state : state) (id : data) (argmem : argmem) (argtype : argtype) : state = match state with
(env, mem, mem_len, visited) -> let env = (id, (argmem, argtype)) :: env in
(env, mem, mem_len, visited)
let mem_get (state : state) (p : path) : value = match state with
(env, mem, mem_len, _visited) -> access_get env mem mem_len p
let mem_set (state : state) (p : path) (value : value) : state = match state with
(env, mem, mem_len, visited) -> (env, access_set env mem mem_len p value, mem_len, visited)
let mem_add (state : state) (value : value) : state = match state with
(env, mem, mem_len, visited) -> let mem = value :: mem in (env, mem, mem_len + 1, visited)
let mem_check (state : state) (p : path) : unit =
(* TODO: use path in error instead *)
if mem_get state p == BotV then raise @@ Incorrect_memory_access (pathvar p) else ()
(* --- *)
let arg_to_value (state : state) (arg : arg) : value = match arg with
| RValue -> UnitV
| LValue p -> mem_get state p
(* TODO: FIXME: args as argmem ?? *)
let st_mem_len (state : state) : int =
match state with (_, _, mem_len, _) -> mem_len
let check_tag_correct (tag : tag) (id : data) : unit =
if (* (is_in tag && not (is_read tag)) || *) (* TODO: required ?? *)
is_out tag > is_always_write tag ||
is_read tag > is_in tag
(* || is_copy tag && is_out tag *) (* ?? *)
then raise @@ Invalid_argument_tag id
else ()
let st_add_arg (state : state) (state_before : state)
(id : data) (arg_tag : tag) (arg : arg) : state =
check_tag_correct arg_tag id;
if is_copy arg_tag
then let state = mem_add state (arg_to_value state_before arg) in
env_add state id arg_tag (st_mem_len state - 1)
else match arg with
| RValue -> raise @@ Ref_rvalue_argument id (* TODO: allow later ?? *)
| LValue arg -> let (parent_tag, mem_id) = env_get state_before arg in
if is_may_write arg_tag > is_always_write parent_tag (* TODO: FIXME: not updated semantics ?? *)
then raise @@ Incorrect_const_cast id
else if is_read arg_tag
then env_add state id arg_tag mem_id
(* TODO: parent state is spoiled, check that this is correct *)
else let state_ext = env_add state id arg_tag mem_id in
mem_set state_ext id BotV
(* TODO: FIXME: not enough tests on incorrect const cast (passed without ref or out check) *)
(* TODO; FIXME: forbid duplicates, collect lists of all spoils & checks ? *)
let st_spoil_by_args (state : state) (arg_tags : tag list) (args : data list) : state =
match state with (env, mem, mem_len, _visited) ->
let state_before = state in
let spoil_folder (state : state) (tag : tag) (id : data) : state =
let parent_tag = fst (env_get state id) in
(* NOTE: replaced with later condition *)
(* if is_write tag > is_write parent_tag && (not (is_copy tag) || is_out tag) then raise @@ Incorrect_const_cast idi else *)
let state = if is_read tag then (mem_check state_before id; state) else state (* NOTE: state override *)
in if is_never_write tag then state (* TODO: FIXME: check *)
else match is_out tag with
| true -> if not @@ is_always_write parent_tag then raise @@ Incorrect_const_cast id
else mem_set state id UnitV
| false -> if is_copy tag then state
else if not @@ is_may_write parent_tag then raise @@ Incorrect_const_cast id (* TODO: check that may modifier correct *)
else mem_set state id BotV
in List.fold_left2 spoil_folder state arg_tags args
let list_drop n xs = List.of_seq @@ Seq.drop n @@ List.to_seq xs
let rec eval_stmt (state : state) (prog : fun_decl list) (stmt : stmt) : state =
match stmt with
| Call (f_id, args) -> let (arg_tags, _) as f_decl = List.nth prog f_id in
let state_with_visited = if visited_check state f_id
then state
else let new_state_with_visited = visited_add state f_id in
let state_fun = eval_fun new_state_with_visited prog f_decl (List.map (fun arg -> LValue arg) args) in
(* NOTE: now memory in function is not spoiled *)
state_fun
in st_spoil_by_args state_with_visited arg_tags args
| Read id -> mem_check state id; state
| Write id -> if is_may_write @@ fst @@ env_get state id
then mem_set state id UnitV
else raise @@ Incorrect_const_cast id
| Choice (xs, ys) -> let state_x = eval_body state prog xs in
let state_y = eval_body state prog ys in
state_combine state_x state_y
(* TODO: FIXME: additional may write / always write checks ?? *)
and eval_body (state : state) (prog : fun_decl list) (body : body) : state =
List.fold_left (fun state stmt -> eval_stmt state prog stmt) state body
and eval_fun (state : state) (prog : fun_decl list) (decl : fun_decl) (args : arg list) : state =
match decl with (arg_tags, body) ->
match state with (env_before, mem_before, len_before, visited_before) as state_before ->
let state : state = ([], mem_before, len_before, visited_before) in
let (state, _) = List.fold_left2 (fun (state, id) arg_tag arg -> (st_add_arg state state_before id arg_tag arg, id + 1))
(state, 0) arg_tags args in
let state = eval_body state prog body in
match state with (_env, mem, len, visited) ->
(env_before, mem_before, len_before, visited)
(* (env_before, list_drop (len - len_before) mem, len_before, visited) (* TODO: save some assignments ?? *) *)
and eval_fun_empty_args (state : state) (prog : fun_decl list) (decl : fun_decl) : state =
match decl with (arg_tags, _) ->
let args = List.map (fun _ -> RValue) arg_tags in
eval_fun state prog decl args
let empty_state : state = ([], [], 0, [])
let eval_prog ((prog, main_decl) : prog) = ignore @@ eval_fun_empty_args empty_state prog main_decl
(* tests *)
let rwi_value : tag = (Rd, AlwaysWr, Cp, In, NOut)
let rmwi_value : tag = (Rd, MayWr, Cp, In, NOut)
let ri_value : tag = (Rd, NeverWr, Cp, In, NOut)
let wi_value : tag = (NRd, AlwaysWr, Cp, In, NOut)
let mwi_value : tag = (NRd, MayWr, Cp, In, NOut)
let i_value : tag = (NRd, NeverWr, Cp, In, NOut)
let rwi_ref : tag = (Rd, AlwaysWr, NCp, In, NOut)
let rmwi_ref : tag = (Rd, MayWr, NCp, In, NOut)
let ri_ref : tag = (Rd, NeverWr, NCp, In, NOut)
let wi_ref : tag = (NRd, AlwaysWr, NCp, In, NOut)
let mwi_ref : tag = (NRd, MayWr, NCp, In, NOut)
let i_ref : tag = (NRd, NeverWr, NCp, In, NOut)
(* >> tests without functions *)
let%expect_test "empty" =
eval_prog ([], ([], []));
Printf.printf "done!";
[%expect {| done! |}]
(* let%expect_test "ref param in main failure" = *)
(* try (eval_prog ([], ([i_ref], [])); *)
(* [%expect.unreachable]) *)
(* with Ref_rvalue_argument id -> Printf.printf "%i" id; *)
(* [%expect {| 0 |}] *)
(* let%expect_test "read empty args" = *)
(* try (eval_prog ([], ([], [Read 0])); *)
(* [%expect.unreachable]) *)
(* with Not_found -> Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "write empty args" = *)
(* try (eval_prog ([], ([], [Write 0])); *)
(* [%expect.unreachable]) *)
(* with Not_found -> Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "simple write" = *)
(* eval_prog ([], ([wi_value], [Write 0])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "simple read" = (* NOTE: should not work with read-before-write check*) *)
(* eval_prog ([], ([ri_value], [Read 0])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "multiple read & write" = *)
(* eval_prog ([], ([rwi_value], [Write 0; Read 0; Write 0; Write 0; Read 0; Read 0])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "multiple read & write, multiple args" = *)
(* eval_prog ([], ([wi_value; wi_value; wi_value], [Write 0; Read 0; Write 1; Write 0; Write 2; Read 1; Write 2; Read 0; Read 2])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "main, access out of range" = *)
(* try(eval_prog ([], ([wi_value], [Write 0; Read 5 ])); *)
(* [%expect.unreachable]) *)
(* with Not_found -> Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "main, access out of range" = *)
(* try(eval_prog ([], ([wi_value], [Write 0; Write 5 ])); *)
(* [%expect.unreachable]) *)
(* with Not_found -> Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* >> tests with one function *)
(* let%expect_test "simple function call with value arg" = *)
(* eval_prog ([([wi_value], [Write 0; Read 0; Write 0])], ([wi_value], [Write 0; Call (0, [0]) ])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "simple function call with ref arg" = *)
(* eval_prog ([([wi_ref], [Write 0; Read 0; Write 0])], ([wi_value], [Write 0; Call (0, [0]) ])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "function with value arg & read" = *)
(* eval_prog ([([wi_value], [Write 0; Read 0; Write 0])], ([wi_value], [Write 0; Call (0, [0]); Read 0 ])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* --- *)
(* let%expect_test "function with ref arg & read" = *)
(* try (eval_prog ([([rwi_ref], [Read 0; Write 0])], ([wi_value], [Write 0; Call (0, [0]); Read 0 ])); *)
(* [%expect.unreachable]) *)
(* with Incorrect_memory_access id -> Printf.printf "%i" id; *)
(* [%expect {| 0 |}] *)
(* let%expect_test "function with ref arg & call twice" = *)
(* try (eval_prog ([([rwi_ref], [Read 0; Write 0])], ([wi_value], [Write 0; Call (0, [0]); Call (0, [0]) ])); *)
(* [%expect.unreachable]) *)
(* with Incorrect_memory_access id -> Printf.printf "%i" id; *)
(* [%expect {| 0 |}] *)
(* NOTE: behaviour is fixed with new capabilities *)
(* let%expect_test "function with ref arg, write first & call twice" = *)
(* eval_prog ([([wi_ref], [Write 0; Read 0; Write 0])], ([wi_value], [Write 0; Call (0, [0]); Call (0, [0]) ])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "function with ref arg & read, write" = *)
(* try (eval_prog ([([rwi_ref], [Read 0; Write 0])], ([wi_value], [Write 0; Call (0, [0]); Read 0; Write 0 ])); *)
(* [%expect.unreachable]) *)
(* with Incorrect_memory_access id -> Printf.printf "%i" id; *)
(* [%expect {| 0 |}] *)
(* let%expect_test "function with ref arg & write, read" = *)
(* eval_prog ([([rwi_ref], [Read 0; Write 0])], ([wi_value], [Write 0; Call (0, [0]); Write 0; Read 0 ])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "function with ref arg, no write inside & read" = *)
(* eval_prog ([([ri_ref], [Read 0; Read 0])], ([wi_value], [Write 0; Call (0, [0]); Read 0 ])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* --- *)
(* let%expect_test "function with value arg, read out of range" = *)
(* try(eval_prog ([([ri_ref], [Read 0; Read 1])], ([wi_value; i_value], [Write 0; Call (0, [0]); Read 0 ])); *)
(* [%expect.unreachable]) *)
(* with Not_found -> Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "function with ref arg, read out of range" = *)
(* try(eval_prog ([([ri_ref], [Read 0; Read 1])], ([wi_value; i_value], [Write 0; Call (0, [0]); Read 0 ])); *)
(* [%expect.unreachable]) *)
(* with Not_found -> Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "function with value arg, write out of range" = *)
(* try(eval_prog ([([rwi_value], [Read 0; Write 1])], ([wi_value; i_value], [Write 0; Call (0, [0]); Read 0 ])); *)
(* [%expect.unreachable]) *)
(* with Not_found -> Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "function with value arg, call out of range" = *)
(* try(eval_prog ([([ri_value], [Read 0])], ([wi_value; i_value], [Write 0; Call (0, [2]); Read 0 ])); *)
(* [%expect.unreachable]) *)
(* with Not_found -> Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* --- *)
(* let%expect_test "function with ref & value args, no write inside & read" = *)
(* eval_prog ( *)
(* [([ri_ref; ri_value], [Read 0; Read 1])], *)
(* ([wi_value; wi_value], [Write 0; Write 1; Call (0, [0; 1]); Read 0; Read 1 ])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "function with ref & value args, write value inside & read" = *)
(* eval_prog ( *)
(* [([ri_ref; rwi_value], [Read 0; Read 1; Write 1; Read 1])], *)
(* ([wi_value; wi_value], [Write 0; Write 1; Call (0, [0; 1]); Read 0; Read 1 ])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "function with ref & value args, write both inside & read" = *)
(* try (eval_prog ( *)
(* [([rwi_ref; rwi_value],[Read 0; Read 1; Write 0; Write 1; Read 1])], *)
(* ([wi_value; wi_value], [Write 0; Write 1; Call (0, [0; 1]); Read 0; Read 1 ])); *)
(* [%expect.unreachable]) *)
(* with Incorrect_memory_access id -> Printf.printf "%i" id; *)
(* [%expect {| 0 |}] *)
(* --- *)
(* let%expect_test "function with ref two same ref args, read both & read" = *)
(* eval_prog ( *)
(* [([ri_ref; ri_ref],[Read 0; Read 1; Read 1])], *)
(* ([wi_value], [Write 0; Call (0, [0; 0]); Read 0 ])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "function with ref two same ref args, read both & nothing" = *)
(* eval_prog ( *)
(* [([ri_ref; ri_ref],[Read 0; Read 1; Read 1])], *)
(* ([wi_value], [Write 0; Call (0, [0; 0]); ])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "function with ref & copy of the same arg, read & write both & nothing" = *)
(* eval_prog ( *)
(* [([rwi_ref; rwi_value],[Read 0; Read 1; Write 0; Write 1; Read 1])], *)
(* ([wi_value], [Write 0; Call (0, [0; 0]); ])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "function with copy & ref of the same arg, read & write both & nothing" = *)
(* eval_prog ( *)
(* [([rwi_value; rwi_ref],[Read 0; Read 1; Write 0; Write 1; Read 1])], *)
(* ([wi_value], [Write 0; Call (0, [0; 0]); ])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* TODO: FIXME: now correct (use state before for mem check), is this good ?, proper way to fix ? *)
(* let%expect_test "function with ref two same ref args, read & write both, error" = *)
(* try ( *)
(* eval_prog ( *)
(* [([rwi_ref; rwi_ref],[Read 0; Read 1; Write 0; Write 1; Read 1])], *)
(* ([wi_value], [Write 0; Call (0, [0; 0]); ])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* >> tests with several functions *)
(* let%expect_test "two functions with ref arg, read func -> write func" = *)
(* eval_prog ( *)
(* [([ri_ref], [Read 0]); ([wi_ref], [Write 0])], *)
(* ([wi_value], [Write 0; Call (0, [0]); Read 0; Call (1, [0]) ])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "two functions with ref arg, write func -> read func" = *)
(* try (eval_prog ( *)
(* [([ri_ref], [Read 0]); ([wi_ref], [Write 0])], *)
(* ([wi_value], [Write 0; Call (1, [0]); Call (0, [0]) ])); *)
(* [%expect.unreachable]) *)
(* with Incorrect_memory_access id -> Printf.printf "%i" id; *)
(* [%expect {| 0 |}] *)
(* let%expect_test "two functions: ref arg after value arg" = *)
(* eval_prog ( *)
(* [([rwi_ref], [Read 0; Write 0]); ([rwi_value], [Read 0; Write 0])], *)
(* ([wi_value], [Write 0; Call (1, [0]); Read 0; Call (0, [0]) ])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "two functions: value arg after spoiled ref arg" = *)
(* try (eval_prog ( *)
(* [([rwi_ref], [Read 0; Write 0]); ([rwi_value], [Read 0; Write 0])], *)
(* ([wi_value], [Write 0; Call (0, [0]); Call (1, [0]) ])); *)
(* [%expect.unreachable]) *)
(* with Incorrect_memory_access id -> Printf.printf "%i" id; *)
(* [%expect {| 0 |}] *)
(* --- *)
(* let%expect_test "simple function call with value arg, const cast error" = *)
(* try (eval_prog ([([ri_value], [Write 0; Read 0; Write 0])], ([wi_value], [Write 0; Call (0, [0]) ])); *)
(* [%expect.unreachable]) *)
(* with Incorrect_const_cast id -> Printf.printf "%i" id; *)
(* [%expect {| 0 |}] *)
(* let%expect_test "simple function call with ref arg, const cast error" = *)
(* try (eval_prog ([([ri_ref], [Write 0; Read 0; Write 0])], ([wi_value], [Write 0; Call (0, [0]) ])); *)
(* [%expect.unreachable]) *)
(* with Incorrect_const_cast id -> Printf.printf "%i" id; *)
(* [%expect {| 0 |}] *)
(* let%expect_test "simple function call with value arg, const cast ok" = *)
(* eval_prog ([([ri_value], [Read 0])], ([wi_value], [Write 0; Call (0, [0]) ])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "simple function call with ref arg, const cast ok" = *)
(* eval_prog ([([ri_ref], [Read 0])], ([wi_value], [Write 0; Call (0, [0]) ])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* --- *)
(* let%expect_test "simple function call with arg, recursive calls" = *)
(* eval_prog ([([rwi_value], [Write 0; Read 0; Write 0; Call (0, [0])])], ([wi_value], [Write 0; Call (0, [0]) ])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* --- *)
(* TODO: out arguments test, etc. *)
(* --- *)
(* TODO: more Combine statement tests *)
(* let%expect_test "simple function call with value arg and choice, rw" = *)
(* eval_prog ([([wi_value], [Choice ([Write 0; Read 0], [Write 0]); Read 0])], ([wi_value], [Write 0; Call (0, [0]) ])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
(* let%expect_test "simple function call with ref arg and choice, rw" = *)
(* try (eval_prog ([([ri_ref], [Choice ([Read 0], [Write 0])])], ([wi_value], [Write 0; Call (0, [0]) ])); *)
(* [%expect.unreachable]) *)
(* with Incorrect_const_cast id -> Printf.printf "%i" id; *)
(* [%expect {| 0 |}] *)
(* let%expect_test "simple function call with ref arg and choice, rr" = *)
(* eval_prog ([([ri_ref], [Choice ([Read 0], [Read 0; Read 0])])], ([wi_value], [Write 0; Call (0, [0]) ])); *)
(* Printf.printf "done!"; *)
(* [%expect {| done! |}] *)
end
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