equal
deleted
inserted
replaced
18 val get_sort: Type.tsig -> (indexname -> sort option) -> (sort -> sort) |
18 val get_sort: Type.tsig -> (indexname -> sort option) -> (sort -> sort) |
19 -> (indexname * sort) list -> indexname -> sort |
19 -> (indexname * sort) list -> indexname -> sort |
20 val infer_types: Pretty.pp |
20 val infer_types: Pretty.pp |
21 -> Type.tsig -> (string -> typ option) -> (indexname -> typ option) |
21 -> Type.tsig -> (string -> typ option) -> (indexname -> typ option) |
22 -> (indexname -> sort option) -> (string -> string) -> (typ -> typ) |
22 -> (indexname -> sort option) -> (string -> string) -> (typ -> typ) |
23 -> (sort -> sort) -> string list -> bool -> typ list -> term list |
23 -> (sort -> sort) -> Name.context -> bool -> typ list -> term list |
24 -> term list * (indexname * typ) list |
24 -> term list * (indexname * typ) list |
25 end; |
25 end; |
26 |
26 |
27 structure TypeInfer: TYPE_INFER = |
27 structure TypeInfer: TYPE_INFER = |
28 struct |
28 struct |
206 val add_parms = fold_pretyps add_parmsT; |
206 val add_parms = fold_pretyps add_parmsT; |
207 |
207 |
208 |
208 |
209 (* add_names *) |
209 (* add_names *) |
210 |
210 |
211 fun add_namesT (PType (_, Ts)) xs = fold add_namesT Ts xs |
211 fun add_namesT (PType (_, Ts)) = fold add_namesT Ts |
212 | add_namesT (PTFree (x, _)) xs = x ins_string xs |
212 | add_namesT (PTFree (x, _)) = Name.declare x |
213 | add_namesT (PTVar ((x, _), _)) xs = x ins_string xs |
213 | add_namesT (PTVar ((x, _), _)) = Name.declare x |
214 | add_namesT (Link (ref T)) xs = add_namesT T xs |
214 | add_namesT (Link (ref T)) = add_namesT T |
215 | add_namesT (Param _) xs = xs; |
215 | add_namesT (Param _) = I; |
216 |
216 |
217 val add_names = fold_pretyps add_namesT; |
217 val add_names = fold_pretyps add_namesT; |
218 |
218 |
219 |
219 |
220 (* simple_typ/term_of *) |
220 (* simple_typ/term_of *) |
243 fun elim (r as ref (Param S), x) = r := mk_var (x, S) |
243 fun elim (r as ref (Param S), x) = r := mk_var (x, S) |
244 | elim _ = (); |
244 | elim _ = (); |
245 |
245 |
246 val used' = fold add_names ts (fold add_namesT Ts used); |
246 val used' = fold add_names ts (fold add_namesT Ts used); |
247 val parms = rev (fold add_parms ts (fold add_parmsT Ts [])); |
247 val parms = rev (fold add_parms ts (fold add_parmsT Ts [])); |
248 val names = Name.invent_list used' (prfx ^ "'a") (length parms); |
248 val names = Name.invents used' (prfx ^ "'a") (length parms); |
249 in |
249 in |
250 ListPair.app elim (parms, names); |
250 ListPair.app elim (parms, names); |
251 (map simple_typ_of Ts, map simple_term_of ts) |
251 (map simple_typ_of Ts, map simple_term_of ts) |
252 end; |
252 end; |
253 |
253 |
338 fun unif_failed msg = |
338 fun unif_failed msg = |
339 "Type unification failed" ^ (if msg = "" then "" else ": " ^ msg) ^ "\n"; |
339 "Type unification failed" ^ (if msg = "" then "" else ": " ^ msg) ^ "\n"; |
340 |
340 |
341 fun prep_output bs ts Ts = |
341 fun prep_output bs ts Ts = |
342 let |
342 let |
343 val (Ts_bTs', ts') = typs_terms_of [] PTFree "??" (Ts @ map snd bs, ts); |
343 val (Ts_bTs', ts') = typs_terms_of Name.context PTFree "??" (Ts @ map snd bs, ts); |
344 val (Ts', Ts'') = chop (length Ts) Ts_bTs'; |
344 val (Ts', Ts'') = chop (length Ts) Ts_bTs'; |
345 val xs = map Free (map fst bs ~~ Ts''); |
345 val xs = map Free (map fst bs ~~ Ts''); |
346 val ts'' = map (fn t => subst_bounds (xs, t)) ts'; |
346 val ts'' = map (fn t => subst_bounds (xs, t)) ts'; |
347 in (ts'', Ts') end; |
347 in (ts'', Ts') end; |
348 |
348 |
520 |
520 |
521 tsig: type signature |
521 tsig: type signature |
522 const_type: name mapping and signature lookup |
522 const_type: name mapping and signature lookup |
523 def_type: partial map from indexnames to types (constrains Frees and Vars) |
523 def_type: partial map from indexnames to types (constrains Frees and Vars) |
524 def_sort: partial map from indexnames to sorts (constrains TFrees and TVars) |
524 def_sort: partial map from indexnames to sorts (constrains TFrees and TVars) |
525 used: list of already used type variables |
525 used: context of already used type variables |
526 freeze: if true then generated parameters are turned into TFrees, else TVars*) |
526 freeze: if true then generated parameters are turned into TFrees, else TVars*) |
527 |
527 |
528 fun infer_types pp tsig const_type def_type def_sort |
528 fun infer_types pp tsig const_type def_type def_sort |
529 map_const map_type map_sort used freeze pat_Ts raw_ts = |
529 map_const map_type map_sort used freeze pat_Ts raw_ts = |
530 let |
530 let |