60 lines
1.9 KiB
OCaml
60 lines
1.9 KiB
OCaml
open Names
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open Location
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open Signature
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type error =
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| Eckvar_unbound_input of name option * name
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| Eckvar_unbound_ouput of name option * name
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exception SignatureError of name option * name
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let message loc (s,e) =
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Format.eprintf "%aInfered signature :@\n%a@\n"
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print_location loc
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Global_printer.print_interface_value ("",s);
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begin match e with
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| Eckvar_unbound_input(var_name,ck_name) ->
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let a,name = match var_name with None -> "A","" | Some n -> "The"," "^n in
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Format.eprintf "%s sampled input%s should come together with its sampling variable %s.@."
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a name ck_name
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| Eckvar_unbound_ouput (var_name,ck_name) ->
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let a,name = match var_name with None -> "A","" | Some n -> "The"," "^n in
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Format.eprintf "%s sampled ouput%s should be returned with its sampling value %s.@."
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a name ck_name
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end;
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Format.eprintf "@.";
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raise Errors.Error
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(** @raise Errors.Error after printing the error *)
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let check_signature s =
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(* a simple env of defined names will be used, represented by a Set *)
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let rec append env sa_l = match sa_l with
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| [] -> env
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| sa::sa_l -> match sa.a_name with
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| None -> append env sa_l
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| Some x -> append (NamesSet.add x env) sa_l
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in
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(* the clock of [arg] is correct if all the vars used are in [env] *)
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let check env arg =
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let n = arg.a_name in
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let rec f = function
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| Cbase -> ()
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| Con(ck,_,x) ->
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if not (NamesSet.mem x env)
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then raise (SignatureError (n,x));
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f ck
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in
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f arg.a_clock
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in
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(*initial env with only the inputs*)
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let env = append NamesSet.empty s.node_inputs in
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(try List.iter (check env) s.node_inputs
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with SignatureError (x,c) ->
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message s.node_loc (s, Eckvar_unbound_input (x,c)));
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let env = append env s.node_outputs in
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try List.iter (check env) s.node_outputs
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with SignatureError (x,c) ->
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message s.node_loc (s, Eckvar_unbound_ouput (x,c))
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