author | panny |
Sun, 01 Sep 2013 10:45:54 +0200 | |
changeset 53357 | 46b0c7a08af7 |
parent 53354 | b7469b85ca28 |
child 53358 | b46e6cd75dc6 |
permissions | -rw-r--r-- |
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(* Title: HOL/BNF/Tools/bnf_fp_rec_sugar.ML |
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Author: Lorenz Panny, TU Muenchen |
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Copyright 2013 |
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Recursor and corecursor sugar. |
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*) |
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signature BNF_FP_REC_SUGAR = |
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sig |
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val add_primrec_cmd: (binding * string option * mixfix) list -> |
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(Attrib.binding * string) list -> local_theory -> local_theory; |
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val add_primcorec_cmd: bool -> |
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(binding * string option * mixfix) list * (Attrib.binding * string) list -> Proof.context -> |
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Proof.state |
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end; |
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structure BNF_FP_Rec_Sugar : BNF_FP_REC_SUGAR = |
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struct |
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open BNF_Util |
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open BNF_FP_Util |
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open BNF_FP_Rec_Sugar_Util |
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open BNF_FP_Rec_Sugar_Tactics |
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exception Primrec_Error of string * term list; |
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fun primrec_error str = raise Primrec_Error (str, []); |
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fun primrec_error_eqn str eqn = raise Primrec_Error (str, [eqn]); |
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fun primrec_error_eqns str eqns = raise Primrec_Error (str, eqns); |
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val free_name = try (fn Free (v, _) => v); |
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val const_name = try (fn Const (v, _) => v); |
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||
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fun finds eq = fold_map (fn x => List.partition (curry eq x) #>> pair x); |
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fun abs_tuple t = if const_name t = SOME @{const_name undefined} then t else |
53341 | 36 |
strip_abs t |>> HOLogic.mk_tuple o map Free |-> HOLogic.tupled_lambda; |
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val simp_attrs = @{attributes [simp]}; |
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(* Primrec *) |
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||
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type eqn_data = { |
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fun_name: string, |
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rec_type: typ, |
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ctr: term, |
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ctr_args: term list, |
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left_args: term list, |
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right_args: term list, |
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res_type: typ, |
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rhs_term: term, |
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user_eqn: term |
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}; |
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fun permute_args n t = list_comb (t, map Bound (0 :: (n downto 1))) |
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|> fold (K (fn u => Abs (Name.uu, dummyT, u))) (0 upto n); |
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fun dissect_eqn lthy fun_names eqn' = |
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let |
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val eqn = subst_bounds (strip_qnt_vars @{const_name all} eqn' |> map Free |> rev, |
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strip_qnt_body @{const_name all} eqn') |> HOLogic.dest_Trueprop |
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handle TERM _ => |
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primrec_error_eqn "malformed function equation (expected \"lhs = rhs\")" eqn'; |
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val (lhs, rhs) = HOLogic.dest_eq eqn |
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handle TERM _ => |
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primrec_error_eqn "malformed function equation (expected \"lhs = rhs\")" eqn'; |
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val (fun_name, args) = strip_comb lhs |
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|>> (fn x => if is_Free x then fst (dest_Free x) |
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else primrec_error_eqn "malformed function equation (does not start with free)" eqn); |
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val (left_args, rest) = take_prefix is_Free args; |
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val (nonfrees, right_args) = take_suffix is_Free rest; |
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val _ = length nonfrees = 1 orelse if length nonfrees = 0 then |
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primrec_error_eqn "constructor pattern missing in left-hand side" eqn else |
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primrec_error_eqn "more than one non-variable argument in left-hand side" eqn; |
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val _ = member (op =) fun_names fun_name orelse |
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primrec_error_eqn "malformed function equation (does not start with function name)" eqn |
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val (ctr, ctr_args) = strip_comb (the_single nonfrees); |
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val _ = try (num_binder_types o fastype_of) ctr = SOME (length ctr_args) orelse |
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primrec_error_eqn "partially applied constructor in pattern" eqn; |
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val _ = let val d = duplicates (op =) (left_args @ ctr_args @ right_args) in null d orelse |
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primrec_error_eqn ("duplicate variable \"" ^ Syntax.string_of_term lthy (hd d) ^ |
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"\" in left-hand side") eqn end; |
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val _ = forall is_Free ctr_args orelse |
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primrec_error_eqn "non-primitive pattern in left-hand side" eqn; |
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val _ = |
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let val b = fold_aterms (fn x as Free (v, _) => |
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if (not (member (op =) (left_args @ ctr_args @ right_args) x) andalso |
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not (member (op =) fun_names v) andalso |
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not (Variable.is_fixed lthy v)) then cons x else I | _ => I) rhs [] |
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in |
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null b orelse |
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primrec_error_eqn ("extra variable(s) in right-hand side: " ^ |
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commas (map (Syntax.string_of_term lthy) b)) eqn |
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end; |
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in |
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{fun_name = fun_name, |
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rec_type = body_type (type_of ctr), |
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ctr = ctr, |
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ctr_args = ctr_args, |
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left_args = left_args, |
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right_args = right_args, |
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res_type = map fastype_of (left_args @ right_args) ---> fastype_of rhs, |
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rhs_term = rhs, |
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user_eqn = eqn'} |
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end; |
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fun rewrite_map_arg funs_data get_indices rec_type res_type = |
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let |
53357 | 111 |
val fun_data = hd (the (find_first (equal rec_type o #rec_type o hd) funs_data)); |
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val fun_name = #fun_name fun_data; |
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val ctr_pos = length (#left_args fun_data); |
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53357 | 115 |
val pT = HOLogic.mk_prodT (rec_type, res_type); |
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116 |
|
53357 | 117 |
val maybe_suc = Option.map (fn x => x + 1); |
118 |
fun subst d (t as Bound d') = t |> d = SOME d' ? curry (op $) (fst_const pT) |
|
119 |
| subst d (Abs (v, T, b)) = Abs (v, if d = SOME ~1 then pT else T, subst (maybe_suc d) b) |
|
120 |
| subst d t = |
|
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121 |
let val (u, vs) = strip_comb t in |
53357 | 122 |
if free_name u = SOME fun_name then |
123 |
if d = SOME ~1 andalso length vs = ctr_pos then |
|
124 |
list_comb (permute_args ctr_pos (snd_const pT), vs) |
|
125 |
else if length vs > ctr_pos andalso is_some d |
|
126 |
andalso d = try (fn Bound n => n) (nth vs ctr_pos) then |
|
127 |
list_comb (snd_const pT $ nth vs ctr_pos, map (subst d) (nth_drop ctr_pos vs)) |
|
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128 |
else |
53357 | 129 |
primrec_error_eqn ("recursive call not directly applied to constructor argument") t |
130 |
else if d = SOME ~1 andalso const_name u = SOME @{const_name comp} then |
|
131 |
list_comb (map_types (K dummyT) u, map2 subst [NONE, d] vs) |
|
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132 |
else |
53357 | 133 |
list_comb (u, map (subst (d |> d = SOME ~1 ? K NONE)) vs) |
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134 |
end |
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135 |
in |
53357 | 136 |
subst (SOME ~1) |
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137 |
end; |
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|
138 |
|
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139 |
(* FIXME get rid of funs_data or get_indices *) |
53350 | 140 |
fun subst_rec_calls lthy funs_data get_indices direct_calls indirect_calls t = |
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141 |
let |
53350 | 142 |
val contains_fun = not o null o get_indices; |
143 |
fun subst bound_Ts (Abs (v, T, b)) = Abs (v, T, subst (T :: bound_Ts) b) |
|
144 |
| subst bound_Ts (t as g $ y) = |
|
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145 |
let |
53350 | 146 |
val is_ctr_arg = exists (exists (exists (equal y) o #ctr_args)) funs_data; |
147 |
val maybe_direct_y' = AList.lookup (op =) direct_calls y; |
|
148 |
val maybe_indirect_y' = AList.lookup (op =) indirect_calls y; |
|
149 |
val (g_head, g_args) = strip_comb g; |
|
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150 |
in |
53350 | 151 |
if not is_ctr_arg then |
152 |
pairself (subst bound_Ts) (g, y) |> (op $) |
|
153 |
else if contains_fun g_head then |
|
154 |
(length g_args >= the (funs_data |> get_first (fn {fun_name, left_args, ...} :: _ => |
|
155 |
if fst (dest_Free g_head) = fun_name then SOME (length left_args) else NONE)) (*###*) |
|
156 |
orelse primrec_error_eqn "too few arguments in recursive call" t; |
|
157 |
list_comb (the maybe_direct_y', g_args)) |
|
158 |
else if is_some maybe_indirect_y' then |
|
159 |
(if contains_fun g then t else y) |
|
160 |
|> massage_indirect_rec_call lthy contains_fun |
|
53357 | 161 |
(rewrite_map_arg funs_data get_indices) bound_Ts y (the maybe_indirect_y') |
53350 | 162 |
|> (if contains_fun g then I else curry (op $) g) |
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163 |
else |
53350 | 164 |
t |
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165 |
end |
53350 | 166 |
| subst _ t = t |
167 |
in |
|
168 |
subst [] t |
|
169 |
|> (fn u => ((contains_fun u andalso (* FIXME detect this case earlier *) |
|
170 |
primrec_error_eqn "recursive call not directly applied to constructor argument" t); u)) |
|
171 |
end; |
|
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|
172 |
|
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173 |
fun build_rec_arg lthy get_indices funs_data ctr_spec maybe_eqn_data = |
53350 | 174 |
if is_none maybe_eqn_data then Const (@{const_name undefined}, dummyT) else |
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175 |
let |
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176 |
val eqn_data = the maybe_eqn_data; |
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177 |
val t = #rhs_term eqn_data; |
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178 |
val ctr_args = #ctr_args eqn_data; |
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|
179 |
|
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180 |
val calls = #calls ctr_spec; |
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181 |
val n_args = fold (curry (op +) o (fn Direct_Rec _ => 2 | _ => 1)) calls 0; |
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|
182 |
|
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|
183 |
val no_calls' = tag_list 0 calls |
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|
184 |
|> map_filter (try (apsnd (fn No_Rec n => n | Direct_Rec (n, _) => n))); |
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|
185 |
val direct_calls' = tag_list 0 calls |
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|
186 |
|> map_filter (try (apsnd (fn Direct_Rec (_, n) => n))); |
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|
187 |
val indirect_calls' = tag_list 0 calls |
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|
188 |
|> map_filter (try (apsnd (fn Indirect_Rec n => n))); |
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|
189 |
|
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190 |
fun make_direct_type T = dummyT; (* FIXME? *) |
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|
191 |
|
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|
192 |
val rec_res_type_list = map (fn (x :: _) => (#rec_type x, #res_type x)) funs_data; |
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|
193 |
|
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|
194 |
fun make_indirect_type (Type (Tname, Ts)) = Type (Tname, Ts |> map (fn T => |
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195 |
let val maybe_res_type = AList.lookup (op =) rec_res_type_list T in |
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|
196 |
if is_some maybe_res_type |
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|
197 |
then HOLogic.mk_prodT (T, the maybe_res_type) |
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|
198 |
else make_indirect_type T end)) |
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|
199 |
| make_indirect_type T = T; |
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|
200 |
|
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|
201 |
val args = replicate n_args ("", dummyT) |
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|
202 |
|> Term.rename_wrt_term t |
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203 |
|> map Free |
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|
204 |
|> fold (fn (ctr_arg_idx, arg_idx) => |
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|
205 |
nth_map arg_idx (K (nth ctr_args ctr_arg_idx))) |
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|
206 |
no_calls' |
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|
207 |
|> fold (fn (ctr_arg_idx, arg_idx) => |
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|
208 |
nth_map arg_idx (K (nth ctr_args ctr_arg_idx |> map_types make_direct_type))) |
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|
209 |
direct_calls' |
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|
210 |
|> fold (fn (ctr_arg_idx, arg_idx) => |
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|
211 |
nth_map arg_idx (K (nth ctr_args ctr_arg_idx |> map_types make_indirect_type))) |
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|
212 |
indirect_calls'; |
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|
213 |
|
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|
214 |
val direct_calls = map (apfst (nth ctr_args) o apsnd (nth args)) direct_calls'; |
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|
215 |
val indirect_calls = map (apfst (nth ctr_args) o apsnd (nth args)) indirect_calls'; |
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|
216 |
|
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|
217 |
val abstractions = map dest_Free (args @ #left_args eqn_data @ #right_args eqn_data); |
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|
218 |
in |
53350 | 219 |
t |
220 |
|> subst_rec_calls lthy funs_data get_indices direct_calls indirect_calls |
|
221 |
|> fold_rev absfree abstractions |
|
222 |
end; |
|
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223 |
|
53352 | 224 |
fun build_defs lthy bs mxs funs_data rec_specs get_indices = |
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225 |
let |
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|
226 |
val n_funs = length funs_data; |
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|
227 |
|
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|
228 |
val ctr_spec_eqn_data_list' = |
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|
229 |
(take n_funs rec_specs |> map #ctr_specs) ~~ funs_data |
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|
230 |
|> maps (uncurry (finds (fn (x, y) => #ctr x = #ctr y)) |
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|
231 |
##> (fn x => null x orelse |
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|
232 |
primrec_error_eqns "excess equations in definition" (map #rhs_term x)) #> fst); |
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|
233 |
val _ = ctr_spec_eqn_data_list' |> map (fn (_, x) => length x <= 1 orelse |
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|
234 |
primrec_error_eqns ("multiple equations for constructor") (map #user_eqn x)); |
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|
235 |
|
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|
236 |
val ctr_spec_eqn_data_list = |
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237 |
ctr_spec_eqn_data_list' @ (drop n_funs rec_specs |> maps #ctr_specs |> map (rpair [])); |
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|
238 |
|
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|
239 |
val recs = take n_funs rec_specs |> map #recx; |
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|
240 |
val rec_args = ctr_spec_eqn_data_list |
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|
241 |
|> sort ((op <) o pairself (#offset o fst) |> make_ord) |
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|
242 |
|> map (uncurry (build_rec_arg lthy get_indices funs_data) o apsnd (try the_single)); |
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|
243 |
val ctr_poss = map (fn x => |
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|
244 |
if length (distinct ((op =) o pairself (length o #left_args)) x) <> 1 then |
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|
245 |
primrec_error ("inconstant constructor pattern position for function " ^ |
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246 |
quote (#fun_name (hd x))) |
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|
247 |
else |
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|
248 |
hd x |> #left_args |> length) funs_data; |
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249 |
in |
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250 |
(recs, ctr_poss) |
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251 |
|-> map2 (fn recx => fn ctr_pos => list_comb (recx, rec_args) |> permute_args ctr_pos) |
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252 |
|> Syntax.check_terms lthy |
53352 | 253 |
|> map3 (fn b => fn mx => fn t => ((b, mx), ((Binding.map_name Thm.def_name b, []), t))) bs mxs |
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254 |
end; |
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255 |
|
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256 |
fun find_rec_calls get_indices eqn_data = |
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257 |
let |
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|
258 |
fun find (Abs (_, _, b)) ctr_arg = find b ctr_arg |
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259 |
| find (t as _ $ _) ctr_arg = |
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260 |
let |
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|
261 |
val (f', args') = strip_comb t; |
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262 |
val n = find_index (equal ctr_arg) args'; |
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|
263 |
in |
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264 |
if n < 0 then |
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|
265 |
find f' ctr_arg @ maps (fn x => find x ctr_arg) args' |
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266 |
else |
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|
267 |
let val (f, args) = chop n args' |>> curry list_comb f' in |
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268 |
if exists_subterm (not o null o get_indices) f then |
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269 |
f :: maps (fn x => find x ctr_arg) args |
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270 |
else |
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|
271 |
find f ctr_arg @ maps (fn x => find x ctr_arg) args |
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272 |
end |
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|
273 |
end |
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|
274 |
| find _ _ = []; |
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|
275 |
in |
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276 |
map (find (#rhs_term eqn_data)) (#ctr_args eqn_data) |
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277 |
|> (fn [] => NONE | callss => SOME (#ctr eqn_data, callss)) |
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278 |
end; |
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|
279 |
|
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|
280 |
fun add_primrec fixes specs lthy = |
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|
281 |
let |
53352 | 282 |
val (bs, mxs) = map_split (apfst fst) fixes; |
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|
283 |
val fun_names = map Binding.name_of bs; |
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|
284 |
val eqns_data = map (snd #> dissect_eqn lthy fun_names) specs; |
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|
285 |
val funs_data = eqns_data |
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|
286 |
|> partition_eq ((op =) o pairself #fun_name) |
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287 |
|> finds (fn (x, y) => x = #fun_name (hd y)) fun_names |> fst |
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288 |
|> map (fn (x, y) => the_single y handle List.Empty => |
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|
289 |
primrec_error ("missing equations for function " ^ quote x)); |
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|
290 |
|
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|
291 |
fun get_indices t = map (fst #>> Binding.name_of #> Free) fixes |
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292 |
|> map_index (fn (i, v) => if exists_subterm (equal v) t then SOME i else NONE) |
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293 |
|> map_filter I; |
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|
294 |
|
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295 |
val arg_Ts = map (#rec_type o hd) funs_data; |
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296 |
val res_Ts = map (#res_type o hd) funs_data; |
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|
297 |
val callssss = funs_data |
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298 |
|> map (partition_eq ((op =) o pairself #ctr)) |
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299 |
|> map (maps (map_filter (find_rec_calls get_indices))); |
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|
300 |
|
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301 |
val ((nontriv, rec_specs, _, induct_thm, induct_thms), lthy') = |
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302 |
rec_specs_of bs arg_Ts res_Ts get_indices callssss lthy; |
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|
303 |
|
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304 |
val actual_nn = length funs_data; |
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|
305 |
|
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|
306 |
val _ = let val ctrs = (maps (map #ctr o #ctr_specs) rec_specs) in |
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|
307 |
map (fn {ctr, user_eqn, ...} => member (op =) ctrs ctr orelse |
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|
308 |
primrec_error_eqn ("argument " ^ quote (Syntax.string_of_term lthy' ctr) ^ |
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|
309 |
" is not a constructor in left-hand side") user_eqn) eqns_data end; |
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|
310 |
|
53352 | 311 |
val defs = build_defs lthy' bs mxs funs_data rec_specs get_indices; |
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|
312 |
|
53329 | 313 |
fun prove def_thms' {ctr_specs, nested_map_idents, nested_map_comps, ...} induct_thm fun_data |
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|
314 |
lthy = |
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|
315 |
let |
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|
316 |
val fun_name = #fun_name (hd fun_data); |
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|
317 |
val def_thms = map (snd o snd) def_thms'; |
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|
318 |
val simp_thms = finds (fn (x, y) => #ctr x = #ctr y) fun_data ctr_specs |
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|
319 |
|> fst |
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|
320 |
|> map_filter (try (fn (x, [y]) => |
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|
321 |
(#user_eqn x, length (#left_args x) + length (#right_args x), #rec_thm y))) |
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|
322 |
|> map (fn (user_eqn, num_extra_args, rec_thm) => |
53329 | 323 |
mk_primrec_tac lthy num_extra_args nested_map_idents nested_map_comps def_thms rec_thm |
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|
324 |
|> K |> Goal.prove lthy [] [] user_eqn) |
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|
325 |
|
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|
326 |
val notes = |
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|
327 |
[(inductN, if actual_nn > 1 then [induct_thm] else [], []), |
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|
328 |
(simpsN, simp_thms, simp_attrs)] |
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|
329 |
|> filter_out (null o #2) |
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|
330 |
|> map (fn (thmN, thms, attrs) => |
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|
331 |
((Binding.qualify true fun_name (Binding.name thmN), attrs), [(thms, [])])); |
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|
332 |
in |
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|
333 |
lthy |> Local_Theory.notes notes |
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|
334 |
end; |
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|
335 |
|
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|
336 |
val common_name = mk_common_name fun_names; |
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|
337 |
|
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|
338 |
val common_notes = |
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|
339 |
[(inductN, if nontriv andalso actual_nn > 1 then [induct_thm] else [], [])] |
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|
340 |
|> filter_out (null o #2) |
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|
341 |
|> map (fn (thmN, thms, attrs) => |
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|
342 |
((Binding.qualify true common_name (Binding.name thmN), attrs), [(thms, [])])); |
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|
343 |
in |
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|
344 |
lthy' |
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|
345 |
|> fold_map Local_Theory.define defs |
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|
346 |
|-> (fn def_thms' => fold_map3 (prove def_thms') (take actual_nn rec_specs) |
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|
347 |
(take actual_nn induct_thms) funs_data) |
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|
348 |
|> snd |
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|
349 |
|> Local_Theory.notes common_notes |> snd |
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|
350 |
end; |
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|
351 |
|
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|
352 |
fun add_primrec_cmd raw_fixes raw_specs lthy = |
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|
353 |
let |
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|
354 |
val _ = let val d = duplicates (op =) (map (Binding.name_of o #1) raw_fixes) in null d orelse |
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|
355 |
primrec_error ("duplicate function name(s): " ^ commas d) end; |
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|
356 |
val (fixes, specs) = fst (Specification.read_spec raw_fixes raw_specs lthy); |
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|
357 |
in |
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changeset
|
358 |
add_primrec fixes specs lthy |
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|
359 |
handle ERROR str => primrec_error str |
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|
360 |
end |
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|
361 |
handle Primrec_Error (str, eqns) => |
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|
362 |
if null eqns |
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|
363 |
then error ("primrec_new error:\n " ^ str) |
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|
364 |
else error ("primrec_new error:\n " ^ str ^ "\nin\n " ^ |
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|
365 |
space_implode "\n " (map (quote o Syntax.string_of_term lthy) eqns)) |
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|
366 |
|
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changeset
|
367 |
|
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|
368 |
|
53310 | 369 |
(* Primcorec *) |
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|
370 |
|
53341 | 371 |
type co_eqn_data_disc = { |
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|
372 |
fun_name: string, |
53341 | 373 |
ctr_no: int, (*###*) |
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|
374 |
cond: term, |
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|
375 |
user_eqn: term |
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|
376 |
}; |
53341 | 377 |
type co_eqn_data_sel = { |
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|
378 |
fun_name: string, |
53341 | 379 |
ctr: term, |
380 |
sel: term, |
|
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|
381 |
fun_args: term list, |
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|
382 |
rhs_term: term, |
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|
383 |
user_eqn: term |
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|
384 |
}; |
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|
385 |
datatype co_eqn_data = |
53341 | 386 |
Disc of co_eqn_data_disc | |
387 |
Sel of co_eqn_data_sel; |
|
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changeset
|
388 |
|
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changeset
|
389 |
fun co_dissect_eqn_disc sequential fun_name_corec_spec_list eqn' imp_lhs' imp_rhs matched_conds_ps = |
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|
390 |
let |
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changeset
|
391 |
fun find_subterm p = let (* FIXME \<exists>? *) |
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|
392 |
fun f (t as u $ v) = |
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|
393 |
fold_rev (curry merge_options) [if p t then SOME t else NONE, f u, f v] NONE |
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|
394 |
| f t = if p t then SOME t else NONE |
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|
395 |
in f end; |
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changeset
|
396 |
|
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|
397 |
val fun_name = imp_rhs |
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|
398 |
|> perhaps (try HOLogic.dest_not) |
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|
399 |
|> `(try (fst o dest_Free o head_of o snd o dest_comb)) |
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|
400 |
||> (try (fst o dest_Free o head_of o fst o HOLogic.dest_eq)) |
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|
401 |
|> the o merge_options; |
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|
402 |
val corec_spec = the (AList.lookup (op =) fun_name_corec_spec_list fun_name) |
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changeset
|
403 |
handle Option.Option => primrec_error_eqn "malformed discriminator equation" imp_rhs; |
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changeset
|
404 |
|
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changeset
|
405 |
val discs = #ctr_specs corec_spec |> map #disc; |
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changeset
|
406 |
val ctrs = #ctr_specs corec_spec |> map #ctr; |
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changeset
|
407 |
val n_ctrs = length ctrs; |
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changeset
|
408 |
val not_disc = head_of imp_rhs = @{term Not}; |
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changeset
|
409 |
val _ = not_disc andalso n_ctrs <> 2 andalso |
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|
410 |
primrec_error_eqn "\<not>ed discriminator for a type with \<noteq> 2 constructors" imp_rhs; |
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changeset
|
411 |
val disc = find_subterm (member (op =) discs o head_of) imp_rhs; |
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|
412 |
val eq_ctr0 = imp_rhs |> perhaps (try (HOLogic.dest_not)) |> try (HOLogic.dest_eq #> snd) |
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|
413 |
|> (fn SOME t => let val n = find_index (equal t) ctrs in |
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changeset
|
414 |
if n >= 0 then SOME n else NONE end | _ => NONE); |
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|
415 |
val _ = is_some disc orelse is_some eq_ctr0 orelse |
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|
416 |
primrec_error_eqn "no discriminator in equation" imp_rhs; |
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|
417 |
val ctr_no' = |
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|
418 |
if is_none disc then the eq_ctr0 else find_index (equal (head_of (the disc))) discs; |
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|
419 |
val ctr_no = if not_disc then 1 - ctr_no' else ctr_no'; |
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|
420 |
val fun_args = if is_none disc |
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|
421 |
then imp_rhs |> perhaps (try HOLogic.dest_not) |> HOLogic.dest_eq |> fst |> strip_comb |> snd |
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|
422 |
else the disc |> the_single o snd o strip_comb |
53357 | 423 |
|> (fn t => if free_name (head_of t) = SOME fun_name |
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|
424 |
then snd (strip_comb t) else []); |
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changeset
|
425 |
|
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|
426 |
val mk_conjs = try (foldr1 HOLogic.mk_conj) #> the_default @{const True}; |
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|
427 |
val mk_disjs = try (foldr1 HOLogic.mk_disj) #> the_default @{const False}; |
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|
428 |
val catch_all = try (fst o dest_Free o the_single) imp_lhs' = SOME Name.uu_; |
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|
429 |
val matched_conds = filter (equal fun_name o fst) matched_conds_ps |> map snd; |
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|
430 |
val imp_lhs = mk_conjs imp_lhs'; |
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|
431 |
val cond = |
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|
432 |
if catch_all then |
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|
433 |
if null matched_conds then fold_rev absfree (map dest_Free fun_args) @{const True} else |
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|
434 |
(strip_abs_vars (hd matched_conds), |
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|
435 |
mk_disjs (map strip_abs_body matched_conds) |> HOLogic.mk_not) |
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|
436 |
|-> fold_rev (fn (v, T) => fn u => Abs (v, T, u)) |
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|
437 |
else if sequential then |
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changeset
|
438 |
HOLogic.mk_conj (HOLogic.mk_not (mk_disjs (map strip_abs_body matched_conds)), imp_lhs) |
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|
439 |
|> fold_rev absfree (map dest_Free fun_args) |
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|
440 |
else |
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|
441 |
imp_lhs |> fold_rev absfree (map dest_Free fun_args); |
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changeset
|
442 |
val matched_cond = |
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changeset
|
443 |
if sequential then fold_rev absfree (map dest_Free fun_args) imp_lhs else cond; |
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changeset
|
444 |
|
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changeset
|
445 |
val matched_conds_ps' = if catch_all |
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|
446 |
then (fun_name, cond) :: filter (not_equal fun_name o fst) matched_conds_ps |
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|
447 |
else (fun_name, matched_cond) :: matched_conds_ps; |
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|
448 |
in |
53341 | 449 |
(Disc { |
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|
450 |
fun_name = fun_name, |
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changeset
|
451 |
ctr_no = ctr_no, |
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|
452 |
cond = cond, |
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|
453 |
user_eqn = eqn' |
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|
454 |
}, matched_conds_ps') |
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|
455 |
end; |
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changeset
|
456 |
|
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|
457 |
fun co_dissect_eqn_sel fun_name_corec_spec_list eqn' eqn = |
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|
458 |
let |
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changeset
|
459 |
val (lhs, rhs) = HOLogic.dest_eq eqn |
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changeset
|
460 |
handle TERM _ => |
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changeset
|
461 |
primrec_error_eqn "malformed function equation (expected \"lhs = rhs\")" eqn; |
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|
462 |
val sel = head_of lhs; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
463 |
val (fun_name, fun_args) = dest_comb lhs |> snd |> strip_comb |> apfst (fst o dest_Free) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
464 |
handle TERM _ => |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
465 |
primrec_error_eqn "malformed selector argument in left-hand side" eqn; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
466 |
val corec_spec = the (AList.lookup (op =) fun_name_corec_spec_list fun_name) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
467 |
handle Option.Option => primrec_error_eqn "malformed selector argument in left-hand side" eqn; |
53341 | 468 |
val (ctr_spec, sel) = #ctr_specs corec_spec |
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
469 |
|> the o get_index (try (the o find_first (equal sel) o #sels)) |
53341 | 470 |
|>> nth (#ctr_specs corec_spec); |
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
471 |
in |
53341 | 472 |
Sel { |
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
473 |
fun_name = fun_name, |
53341 | 474 |
ctr = #ctr ctr_spec, |
475 |
sel = sel, |
|
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
476 |
fun_args = fun_args, |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
477 |
rhs_term = rhs, |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
478 |
user_eqn = eqn' |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
479 |
} |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
480 |
end; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
481 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
482 |
fun co_dissect_eqn_ctr sequential fun_name_corec_spec_list eqn' imp_lhs' imp_rhs matched_conds_ps = |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
483 |
let |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
484 |
val (lhs, rhs) = HOLogic.dest_eq imp_rhs; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
485 |
val fun_name = head_of lhs |> fst o dest_Free; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
486 |
val corec_spec = the (AList.lookup (op =) fun_name_corec_spec_list fun_name); |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
487 |
val (ctr, ctr_args) = strip_comb rhs; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
488 |
val ctr_spec = the (find_first (equal ctr o #ctr) (#ctr_specs corec_spec)) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
489 |
handle Option.Option => primrec_error_eqn "not a constructor" ctr; |
53341 | 490 |
|
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
491 |
val disc_imp_rhs = betapply (#disc ctr_spec, lhs); |
53341 | 492 |
val (maybe_eqn_data_disc, matched_conds_ps') = if length (#ctr_specs corec_spec) = 1 |
493 |
then (NONE, matched_conds_ps) |
|
494 |
else apfst SOME (co_dissect_eqn_disc |
|
495 |
sequential fun_name_corec_spec_list eqn' imp_lhs' disc_imp_rhs matched_conds_ps); |
|
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
496 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
497 |
val sel_imp_rhss = (#sels ctr_spec ~~ ctr_args) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
498 |
|> map (fn (sel, ctr_arg) => HOLogic.mk_eq (betapply (sel, lhs), ctr_arg)); |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
499 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
500 |
val _ = warning ("reduced\n " ^ Syntax.string_of_term @{context} imp_rhs ^ "\nto\n \<cdot> " ^ |
53341 | 501 |
(is_some maybe_eqn_data_disc ? K (Syntax.string_of_term @{context} disc_imp_rhs ^ "\n \<cdot> ")) "" ^ |
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
502 |
space_implode "\n \<cdot> " (map (Syntax.string_of_term @{context}) sel_imp_rhss)); |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
503 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
504 |
val eqns_data_sel = |
53341 | 505 |
map (co_dissect_eqn_sel fun_name_corec_spec_list eqn') sel_imp_rhss; |
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
506 |
in |
53341 | 507 |
(map_filter I [maybe_eqn_data_disc] @ eqns_data_sel, matched_conds_ps') |
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
508 |
end; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
509 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
510 |
fun co_dissect_eqn sequential fun_name_corec_spec_list eqn' matched_conds_ps = |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
511 |
let |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
512 |
val eqn = subst_bounds (strip_qnt_vars @{const_name all} eqn' |> map Free |> rev, |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
513 |
strip_qnt_body @{const_name all} eqn') |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
514 |
handle TERM _ => primrec_error_eqn "malformed function equation" eqn'; |
53341 | 515 |
val (imp_lhs', imp_rhs) = Logic.strip_horn eqn |
516 |
|> apfst (map HOLogic.dest_Trueprop) o apsnd HOLogic.dest_Trueprop; |
|
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
517 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
518 |
val head = imp_rhs |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
519 |
|> perhaps (try HOLogic.dest_not) |> perhaps (try (fst o HOLogic.dest_eq)) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
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parents:
diff
changeset
|
520 |
|> head_of; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
521 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
522 |
val maybe_rhs = imp_rhs |> perhaps (try (HOLogic.dest_not)) |> try (snd o HOLogic.dest_eq); |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
523 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
524 |
val fun_names = map fst fun_name_corec_spec_list; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
525 |
val discs = maps (#ctr_specs o snd) fun_name_corec_spec_list |> map #disc; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
526 |
val sels = maps (#ctr_specs o snd) fun_name_corec_spec_list |> maps #sels; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
527 |
val ctrs = maps (#ctr_specs o snd) fun_name_corec_spec_list |> map #ctr; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
528 |
in |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
529 |
if member (op =) discs head orelse |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
530 |
is_some maybe_rhs andalso |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
531 |
member (op =) (filter (null o binder_types o fastype_of) ctrs) (the maybe_rhs) then |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
532 |
co_dissect_eqn_disc sequential fun_name_corec_spec_list eqn' imp_lhs' imp_rhs matched_conds_ps |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
533 |
|>> single |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
534 |
else if member (op =) sels head then |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
535 |
([co_dissect_eqn_sel fun_name_corec_spec_list eqn' imp_rhs], matched_conds_ps) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
536 |
else if is_Free head andalso member (op =) fun_names (fst (dest_Free head)) then |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
537 |
co_dissect_eqn_ctr sequential fun_name_corec_spec_list eqn' imp_lhs' imp_rhs matched_conds_ps |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
538 |
else |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
539 |
primrec_error_eqn "malformed function equation" eqn |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
540 |
end; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
541 |
|
53341 | 542 |
fun build_corec_args_discs disc_eqns ctr_specs = |
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
543 |
let |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
544 |
val conds = map #cond disc_eqns; |
53341 | 545 |
val args' = |
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
546 |
if length ctr_specs = 1 then [] |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
547 |
else if length disc_eqns = length ctr_specs then |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
548 |
fst (split_last conds) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
549 |
else if length disc_eqns = length ctr_specs - 1 then |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
550 |
let val n = 0 upto length ctr_specs - 1 |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
551 |
|> the o find_first (fn idx => not (exists (equal idx o #ctr_no) disc_eqns)) (*###*) in |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
552 |
if n = length ctr_specs - 1 then |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
553 |
conds |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
554 |
else |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
555 |
split_last conds |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
556 |
||> (fn t => fold_rev absfree (strip_abs_vars t) (strip_abs_body t |> HOLogic.mk_not)) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
557 |
|>> chop n |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
558 |
|> (fn ((l, r), x) => l @ (x :: r)) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
559 |
end |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
560 |
else |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
561 |
0 upto length ctr_specs - 1 |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
562 |
|> map (fn idx => find_first (equal idx o #ctr_no) disc_eqns |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
563 |
|> Option.map #cond |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
564 |
|> the_default (Const (@{const_name undefined}, dummyT))) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
565 |
|> fst o split_last; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
566 |
in |
53341 | 567 |
(* FIXME: deal with #preds above *) |
568 |
fold2 (fn idx => nth_map idx o K o abs_tuple) (map_filter #pred ctr_specs) args' |
|
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
569 |
end; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
570 |
|
53341 | 571 |
fun build_corec_args_sel all_sel_eqns ctr_spec = |
572 |
let val sel_eqns = filter (equal (#ctr ctr_spec) o #ctr) all_sel_eqns in |
|
573 |
if null sel_eqns then I else |
|
574 |
let |
|
575 |
val sel_call_list = #sels ctr_spec ~~ #calls ctr_spec; |
|
576 |
||
577 |
val _ = warning ("sels / calls:\n \<cdot> " ^ space_implode "\n \<cdot> " (map ((op ^) o |
|
578 |
apfst (Syntax.string_of_term @{context}) o apsnd (curry (op ^) " / " o @{make_string})) |
|
579 |
(sel_call_list))); |
|
580 |
||
581 |
(* FIXME get rid of dummy_no_calls' *) |
|
582 |
val dummy_no_calls' = map_filter (try (apsnd (fn Dummy_No_Corec n => n))) sel_call_list; |
|
583 |
val no_calls' = map_filter (try (apsnd (fn No_Corec n => n))) sel_call_list; |
|
584 |
val direct_calls' = map_filter (try (apsnd (fn Direct_Corec n => n))) sel_call_list; |
|
585 |
val indirect_calls' = map_filter (try (apsnd (fn Indirect_Corec n => n))) sel_call_list; |
|
586 |
||
587 |
fun build_arg_no_call sel = find_first (equal sel o #sel) sel_eqns |> #rhs_term o the; |
|
588 |
fun build_arg_direct_call sel = primrec_error "not implemented yet"; |
|
589 |
fun build_arg_indirect_call sel = primrec_error "not implemented yet"; |
|
590 |
||
591 |
val update_args = I |
|
592 |
#> fold (fn (sel, rec_arg_idx) => nth_map rec_arg_idx |
|
593 |
(build_arg_no_call sel |> K)) no_calls' |
|
594 |
#> fold (fn (sel, rec_arg_idx) => nth_map rec_arg_idx |
|
595 |
(build_arg_indirect_call sel |> K)) indirect_calls' |
|
596 |
#> fold (fn (sel, (q_idx, g_idx, h_idx)) => |
|
597 |
let val (q, g, h) = build_arg_indirect_call sel in |
|
598 |
nth_map q_idx (K q) o nth_map g_idx (K g) o nth_map h_idx (K h) end) direct_calls'; |
|
599 |
||
600 |
val arg_idxs = maps (fn (_, (x, y, z)) => [x, y, z]) direct_calls' @ |
|
601 |
maps (map snd) [dummy_no_calls', no_calls', indirect_calls']; |
|
602 |
val abs_args = fold (fn idx => nth_map idx |
|
603 |
(abs_tuple o fold_rev absfree (sel_eqns |> #fun_args o hd |> map dest_Free))) arg_idxs; |
|
604 |
in |
|
605 |
abs_args o update_args |
|
606 |
end |
|
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
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parents:
diff
changeset
|
607 |
end; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
608 |
|
53352 | 609 |
fun co_build_defs lthy sequential bs mxs arg_Tss fun_name_corec_spec_list eqns_data = |
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
610 |
let |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
611 |
val fun_names = map Binding.name_of bs; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
612 |
|
53341 | 613 |
val disc_eqnss = map_filter (try (fn Disc x => x)) eqns_data |
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
614 |
|> partition_eq ((op =) o pairself #fun_name) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
615 |
|> finds (fn (x, ({fun_name, ...} :: _)) => x = fun_name) fun_names |> fst |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
616 |
|> map (sort ((op <) o pairself #ctr_no |> make_ord) o flat o snd); |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
617 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
618 |
val _ = disc_eqnss |> map (fn x => |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
619 |
let val d = duplicates ((op =) o pairself #ctr_no) x in null d orelse |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
620 |
primrec_error_eqns "excess discriminator equations in definition" |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
621 |
(maps (fn t => filter (equal (#ctr_no t) o #ctr_no) x) d |> map #user_eqn) end); |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
622 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
623 |
val _ = warning ("disc_eqnss:\n \<cdot> " ^ space_implode "\n \<cdot> " (map @{make_string} disc_eqnss)); |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
624 |
|
53341 | 625 |
val sel_eqnss = map_filter (try (fn Sel x => x)) eqns_data |
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
626 |
|> partition_eq ((op =) o pairself #fun_name) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
627 |
|> finds (fn (x, ({fun_name, ...} :: _)) => x = fun_name) fun_names |> fst |
53341 | 628 |
|> map (flat o snd); |
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
629 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
630 |
val _ = warning ("sel_eqnss:\n \<cdot> " ^ space_implode "\n \<cdot> " (map @{make_string} sel_eqnss)); |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
631 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
632 |
val corecs = map (#corec o snd) fun_name_corec_spec_list; |
53341 | 633 |
val ctr_specss = map (#ctr_specs o snd) fun_name_corec_spec_list; |
634 |
val n_args = fold (curry (op +)) (map (K 1) (maps (map_filter #pred) ctr_specss) @ |
|
635 |
map (fn Direct_Corec _ => 3 | _ => 1) (maps (maps #calls) ctr_specss)) 0; |
|
636 |
val corec_args = replicate n_args (Const (@{const_name undefined}, dummyT)) |
|
637 |
|> fold2 build_corec_args_discs disc_eqnss ctr_specss |
|
638 |
|> fold2 (fn sel_eqns => fold (build_corec_args_sel sel_eqns)) sel_eqnss ctr_specss; |
|
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
639 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
640 |
val _ = warning ("corecursor arguments:\n \<cdot> " ^ |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
641 |
space_implode "\n \<cdot> " (map (Syntax.string_of_term @{context}) corec_args)); |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
642 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
643 |
fun uneq_pairs_rev xs = xs (* FIXME \<exists>? *) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
644 |
|> these o try (split_last #> (fn (ys, y) => uneq_pairs_rev ys @ map (pair y) ys)); |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
645 |
val proof_obligations = if sequential then [] else |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
646 |
maps (uneq_pairs_rev o map #cond) disc_eqnss |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
647 |
|> map (fn (x, y) => ((strip_abs_body x, strip_abs_body y), strip_abs_vars x)) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
648 |
|> map (apfst (apsnd HOLogic.mk_not #> pairself HOLogic.mk_Trueprop |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
649 |
#> apfst (curry (op $) @{const ==>}) #> (op $))) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
650 |
|> map (fn (t, abs_vars) => fold_rev (fn (v, T) => fn u => |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
651 |
Const (@{const_name all}, (T --> @{typ prop}) --> @{typ prop}) $ |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
652 |
Abs (v, T, u)) abs_vars t); |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
653 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
654 |
fun currys Ts t = if length Ts <= 1 then t else |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
655 |
t $ foldr1 (fn (u, v) => HOLogic.pair_const dummyT dummyT $ u $ v) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
656 |
(length Ts - 1 downto 0 |> map Bound) |
53304 | 657 |
|> fold_rev (fn T => fn u => Abs (Name.uu, T, u)) Ts; |
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
658 |
in |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
659 |
map (list_comb o rpair corec_args) corecs |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
660 |
|> map2 (fn Ts => fn t => if length Ts = 0 then t $ HOLogic.unit else t) arg_Tss |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
661 |
|> map2 currys arg_Tss |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
662 |
|> Syntax.check_terms lthy |
53352 | 663 |
|> map3 (fn b => fn mx => fn t => ((b, mx), ((Binding.map_name Thm.def_name b, []), t))) bs mxs |
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
664 |
|> rpair proof_obligations |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
665 |
end; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
666 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
667 |
fun add_primcorec sequential fixes specs lthy = |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
668 |
let |
53352 | 669 |
val (bs, mxs) = map_split (apfst fst) fixes; |
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
670 |
val (arg_Ts, res_Ts) = map (strip_type o snd o fst #>> HOLogic.mk_tupleT) fixes |> split_list; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
671 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
672 |
(* copied from primrec_new *) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
673 |
fun get_indices t = map (fst #>> Binding.name_of #> Free) fixes |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
674 |
|> map_index (fn (i, v) => if exists_subterm (equal v) t then SOME i else NONE) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
675 |
|> map_filter I; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
676 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
677 |
val callssss = []; (* FIXME *) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
678 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
679 |
val ((nontriv, corec_specs, _, coinduct_thm, strong_co_induct_thm, coinduct_thmss, |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
680 |
strong_coinduct_thmss), lthy') = |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
681 |
corec_specs_of bs arg_Ts res_Ts get_indices callssss lthy; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
682 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
683 |
val fun_names = map Binding.name_of bs; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
684 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
685 |
val fun_name_corec_spec_list = (fun_names ~~ res_Ts, corec_specs) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
686 |
|> uncurry (finds (fn ((v, T), {corec, ...}) => T = body_type (fastype_of corec))) |> fst |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
687 |
|> map (apfst fst #> apsnd the_single); (*###*) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
688 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
689 |
val (eqns_data, _) = |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
690 |
fold_map (co_dissect_eqn sequential fun_name_corec_spec_list) (map snd specs) [] |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
691 |
|>> flat; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
692 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
693 |
val (defs, proof_obligations) = |
53352 | 694 |
co_build_defs lthy' sequential bs mxs (map (binder_types o snd o fst) fixes) |
53303
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
695 |
fun_name_corec_spec_list eqns_data; |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
696 |
in |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
697 |
lthy' |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
698 |
|> fold_map Local_Theory.define defs |> snd |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
699 |
|> Proof.theorem NONE (K I) [map (rpair []) proof_obligations] |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
700 |
|> Proof.refine (Method.primitive_text I) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
701 |
|> Seq.hd |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
702 |
end |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
703 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
704 |
fun add_primcorec_cmd seq (raw_fixes, raw_specs) lthy = |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
blanchet
parents:
diff
changeset
|
705 |
let |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
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|
706 |
val (fixes, specs) = fst (Specification.read_spec raw_fixes raw_specs lthy); |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
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parents:
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changeset
|
707 |
in |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
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parents:
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changeset
|
708 |
add_primcorec seq fixes specs lthy |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
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|
709 |
handle ERROR str => primrec_error str |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
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|
710 |
end |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
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parents:
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changeset
|
711 |
handle Primrec_Error (str, eqns) => |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
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|
712 |
if null eqns |
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moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
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|
713 |
then error ("primcorec error:\n " ^ str) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
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|
714 |
else error ("primcorec error:\n " ^ str ^ "\nin\n " ^ |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
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parents:
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|
715 |
space_implode "\n " (map (quote o Syntax.string_of_term lthy) eqns)) |
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
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parents:
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|
716 |
|
ae49b835ca01
moved files related to "primrec_new", "primcorec", and "datatype_compat" from bitbucket co-rec repository
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parents:
diff
changeset
|
717 |
end; |