diff options
Diffstat (limited to 'plugins/ssrmatching')
| -rw-r--r-- | plugins/ssrmatching/g_ssrmatching.ml4 | 101 | ||||
| -rw-r--r-- | plugins/ssrmatching/ssrmatching.ml (renamed from plugins/ssrmatching/ssrmatching.ml4) | 184 | ||||
| -rw-r--r-- | plugins/ssrmatching/ssrmatching.mli | 258 | ||||
| -rw-r--r-- | plugins/ssrmatching/ssrmatching.v | 36 | ||||
| -rw-r--r-- | plugins/ssrmatching/ssrmatching_plugin.mlpack | 1 |
5 files changed, 460 insertions, 120 deletions
diff --git a/plugins/ssrmatching/g_ssrmatching.ml4 b/plugins/ssrmatching/g_ssrmatching.ml4 new file mode 100644 index 00000000..746c368a --- /dev/null +++ b/plugins/ssrmatching/g_ssrmatching.ml4 @@ -0,0 +1,101 @@ +(************************************************************************) +(* * The Coq Proof Assistant / The Coq Development Team *) +(* v * INRIA, CNRS and contributors - Copyright 1999-2018 *) +(* <O___,, * (see CREDITS file for the list of authors) *) +(* \VV/ **************************************************************) +(* // * This file is distributed under the terms of the *) +(* * GNU Lesser General Public License Version 2.1 *) +(* * (see LICENSE file for the text of the license) *) +(************************************************************************) + +open Ltac_plugin +open Genarg +open Pcoq +open Pcoq.Constr +open Ssrmatching +open Ssrmatching.Internal + +(* Defining grammar rules with "xx" in it automatically declares keywords too, + * we thus save the lexer to restore it at the end of the file *) +let frozen_lexer = CLexer.get_keyword_state () ;; + +DECLARE PLUGIN "ssrmatching_plugin" + +let pr_rpattern _ _ _ = pr_rpattern + +ARGUMENT EXTEND rpattern + TYPED AS rpatternty + PRINTED BY pr_rpattern + INTERPRETED BY interp_rpattern + GLOBALIZED BY glob_rpattern + SUBSTITUTED BY subst_rpattern + | [ lconstr(c) ] -> [ mk_rpattern (T (mk_lterm c None)) ] + | [ "in" lconstr(c) ] -> [ mk_rpattern (In_T (mk_lterm c None)) ] + | [ lconstr(x) "in" lconstr(c) ] -> + [ mk_rpattern (X_In_T (mk_lterm x None, mk_lterm c None)) ] + | [ "in" lconstr(x) "in" lconstr(c) ] -> + [ mk_rpattern (In_X_In_T (mk_lterm x None, mk_lterm c None)) ] + | [ lconstr(e) "in" lconstr(x) "in" lconstr(c) ] -> + [ mk_rpattern (E_In_X_In_T (mk_lterm e None, mk_lterm x None, mk_lterm c None)) ] + | [ lconstr(e) "as" lconstr(x) "in" lconstr(c) ] -> + [ mk_rpattern (E_As_X_In_T (mk_lterm e None, mk_lterm x None, mk_lterm c None)) ] +END + +let pr_ssrterm _ _ _ = pr_ssrterm + +ARGUMENT EXTEND cpattern + PRINTED BY pr_ssrterm + INTERPRETED BY interp_ssrterm + GLOBALIZED BY glob_cpattern SUBSTITUTED BY subst_ssrterm + RAW_PRINTED BY pr_ssrterm + GLOB_PRINTED BY pr_ssrterm +| [ "Qed" constr(c) ] -> [ mk_lterm c None ] +END + +let input_ssrtermkind strm = match Util.stream_nth 0 strm with + | Tok.KEYWORD "(" -> '(' + | Tok.KEYWORD "@" -> '@' + | _ -> ' ' +let ssrtermkind = Pcoq.Gram.Entry.of_parser "ssrtermkind" input_ssrtermkind + +GEXTEND Gram + GLOBAL: cpattern; + cpattern: [[ k = ssrtermkind; c = constr -> + let pattern = mk_term k c None in + if loc_of_cpattern pattern <> Some !@loc && k = '(' + then mk_term 'x' c None + else pattern ]]; +END + +ARGUMENT EXTEND lcpattern + TYPED AS cpattern + PRINTED BY pr_ssrterm + INTERPRETED BY interp_ssrterm + GLOBALIZED BY glob_cpattern SUBSTITUTED BY subst_ssrterm + RAW_PRINTED BY pr_ssrterm + GLOB_PRINTED BY pr_ssrterm +| [ "Qed" lconstr(c) ] -> [ mk_lterm c None ] +END + +GEXTEND Gram + GLOBAL: lcpattern; + lcpattern: [[ k = ssrtermkind; c = lconstr -> + let pattern = mk_term k c None in + if loc_of_cpattern pattern <> Some !@loc && k = '(' + then mk_term 'x' c None + else pattern ]]; +END + +ARGUMENT EXTEND ssrpatternarg TYPED AS rpattern PRINTED BY pr_rpattern +| [ rpattern(pat) ] -> [ pat ] +END + +TACTIC EXTEND ssrinstoftpat +| [ "ssrinstancesoftpat" cpattern(arg) ] -> [ Proofview.V82.tactic (ssrinstancesof arg) ] +END + +(* We wipe out all the keywords generated by the grammar rules we defined. *) +(* The user is supposed to Require Import ssreflect or Require ssreflect *) +(* and Import ssreflect.SsrSyntax to obtain these keywords and as a *) +(* consequence the extended ssreflect grammar. *) +let () = CLexer.set_keyword_state frozen_lexer ;; diff --git a/plugins/ssrmatching/ssrmatching.ml4 b/plugins/ssrmatching/ssrmatching.ml index 307bc21a..4a63dd47 100644 --- a/plugins/ssrmatching/ssrmatching.ml4 +++ b/plugins/ssrmatching/ssrmatching.ml @@ -10,10 +10,6 @@ (* This file is (C) Copyright 2006-2015 Microsoft Corporation and Inria. *) -(* Defining grammar rules with "xx" in it automatically declares keywords too, - * we thus save the lexer to restore it at the end of the file *) -let frozen_lexer = CLexer.get_keyword_state () ;; - open Ltac_plugin open Names open Pp @@ -22,8 +18,6 @@ open Stdarg open Term module CoqConstr = Constr open CoqConstr -open Pcoq -open Pcoq.Constr open Vars open Libnames open Tactics @@ -40,14 +34,12 @@ open Pretyping open Ppconstr open Printer open Globnames -open Misctypes +open Namegen open Decl_kinds open Evar_kinds open Constrexpr open Constrexpr_ops -DECLARE PLUGIN "ssrmatching_plugin" - let errorstrm = CErrors.user_err ~hdr:"ssrmatching" let loc_error loc msg = CErrors.user_err ?loc ~hdr:msg (str msg) let ppnl = Feedback.msg_info @@ -131,9 +123,12 @@ let add_genarg tag pr = (** Constructors for cast type *) let dC t = CastConv t (** Constructors for constr_expr *) -let isCVar = function { CAst.v = CRef ({CAst.v=Ident _},_) } -> true | _ -> false -let destCVar = function { CAst.v = CRef ({CAst.v=Ident id},_) } -> id | _ -> - CErrors.anomaly (str"not a CRef.") +let isCVar = function { CAst.v = CRef (qid,_) } -> qualid_is_ident qid | _ -> false +let destCVar = function + | { CAst.v = CRef (qid,_) } when qualid_is_ident qid -> + qualid_basename qid + | _ -> + CErrors.anomaly (str"not a CRef.") let isGLambda c = match DAst.get c with GLambda (Name _, _, _, _) -> true | _ -> false let destGLambda c = match DAst.get c with GLambda (Name id, _, _, c) -> (id, c) | _ -> CErrors.anomaly (str "not a GLambda") @@ -283,7 +278,7 @@ exception NoProgress (* comparison can be much faster than the HO one. *) let unif_EQ env sigma p c = - let evars = existential_opt_value sigma, Evd.universes sigma in + let evars = existential_opt_value0 sigma, Evd.universes sigma in try let _ = Reduction.conv env p ~evars c in true with _ -> false let unif_EQ_args env sigma pa a = @@ -314,24 +309,27 @@ let unif_HO_args env ise0 pa i ca = (* evars into metas, since 8.2 does not TC metas. This means some lossage *) (* for HO evars, though hopefully Miller patterns can pick up some of *) (* those cases, and HO matching will mop up the rest. *) -let flags_FO = +let flags_FO env = + let oracle = Environ.oracle env in + let ts = Conv_oracle.get_transp_state oracle in let flags = - { (Unification.default_no_delta_unify_flags ()).Unification.core_unify_flags + { (Unification.default_no_delta_unify_flags ts).Unification.core_unify_flags with Unification.modulo_conv_on_closed_terms = None; Unification.modulo_eta = true; Unification.modulo_betaiota = true; - Unification.modulo_delta_types = full_transparent_state} + Unification.modulo_delta_types = ts } in { Unification.core_unify_flags = flags; Unification.merge_unify_flags = flags; Unification.subterm_unify_flags = flags; Unification.allow_K_in_toplevel_higher_order_unification = false; Unification.resolve_evars = - (Unification.default_no_delta_unify_flags ()).Unification.resolve_evars + (Unification.default_no_delta_unify_flags ts).Unification.resolve_evars } let unif_FO env ise p c = - Unification.w_unify env ise Reduction.CONV ~flags:flags_FO (EConstr.of_constr p) (EConstr.of_constr c) + Unification.w_unify env ise Reduction.CONV ~flags:(flags_FO env) + (EConstr.of_constr p) (EConstr.of_constr c) (* Perform evar substitution in main term and prune substitution. *) let nf_open_term sigma0 ise c = @@ -339,7 +337,7 @@ let nf_open_term sigma0 ise c = let s = ise and s' = ref sigma0 in let rec nf c' = match kind c' with | Evar ex -> - begin try nf (existential_value s ex) with _ -> + begin try nf (existential_value0 s ex) with _ -> let k, a = ex in let a' = Array.map nf a in if not (Evd.mem !s' k) then s' := Evd.add !s' k (Evarutil.nf_evar_info s (Evd.find s k)); @@ -349,7 +347,9 @@ let nf_open_term sigma0 ise c = let copy_def k evi () = if evar_body evi != Evd.Evar_empty then () else match Evd.evar_body (Evd.find s k) with - | Evar_defined c' -> s' := Evd.define k (nf c') !s' + | Evar_defined c' -> + let c' = EConstr.of_constr (nf (EConstr.Unsafe.to_constr c')) in + s' := Evd.define k c' !s' | _ -> () in let c' = nf c in let _ = Evd.fold copy_def sigma0 () in !s', Evd.evar_universe_context s, EConstr.of_constr c' @@ -448,7 +448,7 @@ let evars_for_FO ~hack env sigma0 (ise0:evar_map) c0 = let nenv = env_size env + if hack then 1 else 0 in let rec put c = match kind c with | Evar (k, a as ex) -> - begin try put (existential_value !sigma ex) + begin try put (existential_value0 !sigma ex) with NotInstantiatedEvar -> if Evd.mem sigma0 k then map put c else let evi = Evd.find !sigma k in @@ -459,11 +459,13 @@ let evars_for_FO ~hack env sigma0 (ise0:evar_map) c0 = | Context.Named.Declaration.LocalAssum (x, t) -> mkVar x :: d, mkNamedProd x (put t) c in let a, t = - Context.Named.fold_inside abs_dc ~init:([], (put evi.evar_concl)) dc in + Context.Named.fold_inside abs_dc + ~init:([], (put @@ EConstr.Unsafe.to_constr evi.evar_concl)) + (EConstr.Unsafe.to_named_context dc) in let m = Evarutil.new_meta () in - ise := meta_declare m t !ise; - sigma := Evd.define k (applistc (mkMeta m) a) !sigma; - put (existential_value !sigma ex) + ise := meta_declare m (EConstr.of_constr t) !ise; + sigma := Evd.define k (EConstr.of_constr (applistc (mkMeta m) a)) !sigma; + put (existential_value0 !sigma ex) end | _ -> map put c in let c1 = put c0 in !ise, c1 @@ -543,7 +545,7 @@ let splay_app ise = | App (f, a') -> loop f (Array.append a' a) | Cast (c', _, _) -> loop c' a | Evar ex -> - (try loop (existential_value ise ex) a with _ -> c, a) + (try loop (existential_value0 ise ex) a with _ -> c, a) | _ -> c, a in fun c -> match kind c with | App (f, a) -> loop f a @@ -706,9 +708,9 @@ let match_upats_HO ~on_instance upats env sigma0 ise c = ;; -let fixed_upat = function +let fixed_upat evd = function | {up_k = KpatFlex | KpatEvar _ | KpatProj _} -> false -| {up_t = t} -> not (occur_existential Evd.empty (EConstr.of_constr t)) (** FIXME *) +| {up_t = t} -> not (occur_existential evd (EConstr.of_constr t)) (** FIXME *) let do_once r f = match !r with Some _ -> () | None -> r := Some (f ()) @@ -767,7 +769,7 @@ let mk_tpattern_matcher ?(all_instances=false) let p2t p = mkApp(p.up_f,p.up_a) in let source () = match upats_origin, upats with | None, [p] -> - (if fixed_upat p then str"term " else str"partial term ") ++ + (if fixed_upat ise p then str"term " else str"partial term ") ++ pr_constr_pat (p2t p) ++ spc() | Some (dir,rule), [p] -> str"The " ++ pr_dir_side dir ++ str" of " ++ pr_constr_pat rule ++ fnl() ++ ws 4 ++ pr_constr_pat (p2t p) ++ fnl() @@ -854,7 +856,7 @@ let rec uniquize = function let p' = mkApp (pf, pa) in if max_occ <= !nocc then p', u.up_dir, (sigma, uc, u.up_t) else errorstrm (str"Only " ++ int !nocc ++ str" < " ++ int max_occ ++ - str(String.plural !nocc " occurence") ++ match upats_origin with + str(String.plural !nocc " occurrence") ++ match upats_origin with | None -> str" of" ++ spc() ++ pr_constr_pat p' | Some (dir,rule) -> str" of the " ++ pr_dir_side dir ++ fnl() ++ ws 4 ++ pr_constr_pat p' ++ fnl () ++ @@ -900,7 +902,6 @@ let pr_pattern_aux pr_constr = function let pp_pattern (sigma, p) = pr_pattern_aux (fun t -> pr_constr_pat (EConstr.Unsafe.to_constr (pi3 (nf_open_term sigma sigma (EConstr.of_constr t))))) p let pr_cpattern = pr_term -let pr_rpattern _ _ _ = pr_pattern let wit_rpatternty = add_genarg "rpatternty" pr_pattern @@ -931,7 +932,7 @@ let glob_cpattern gs p = | k, (v, Some t), _ as orig -> if k = 'x' then glob_ssrterm gs ('(', (v, Some t), None) else match t.CAst.v with - | CNotation("( _ in _ )", ([t1; t2], [], [], [])) -> + | CNotation((InConstrEntrySomeLevel,"( _ in _ )"), ([t1; t2], [], [], [])) -> (try match glob t1, glob t2 with | (r1, None), (r2, None) -> encode k "In" [r1;r2] | (r1, Some _), (r2, Some _) when isCVar t1 -> @@ -939,11 +940,11 @@ let glob_cpattern gs p = | (r1, Some _), (r2, Some _) -> encode k "In" [r1; r2] | _ -> CErrors.anomaly (str"where are we?.") with _ when isCVar t1 -> encode k "In" [bind_in t1 t2]) - | CNotation("( _ in _ in _ )", ([t1; t2; t3], [], [], [])) -> + | CNotation((InConstrEntrySomeLevel,"( _ in _ in _ )"), ([t1; t2; t3], [], [], [])) -> check_var t2; encode k "In" [fst (glob t1); bind_in t2 t3] - | CNotation("( _ as _ )", ([t1; t2], [], [], [])) -> + | CNotation((InConstrEntrySomeLevel,"( _ as _ )"), ([t1; t2], [], [], [])) -> encode k "As" [fst (glob t1); fst (glob t2)] - | CNotation("( _ as _ in _ )", ([t1; t2; t3], [], [], [])) -> + | CNotation((InConstrEntrySomeLevel,"( _ as _ in _ )"), ([t1; t2; t3], [], [], [])) -> check_var t2; encode k "As" [fst (glob t1); bind_in t2 t3] | _ -> glob_ssrterm gs orig ;; @@ -980,27 +981,7 @@ let interp_rpattern s = function | E_As_X_In_T(e,x,t) -> E_As_X_In_T (interp_ssrterm s e,interp_ssrterm s x,interp_ssrterm s t) -let interp_rpattern ist gl t = Tacmach.project gl, interp_rpattern ist t - -ARGUMENT EXTEND rpattern - TYPED AS rpatternty - PRINTED BY pr_rpattern - INTERPRETED BY interp_rpattern - GLOBALIZED BY glob_rpattern - SUBSTITUTED BY subst_rpattern - | [ lconstr(c) ] -> [ T (mk_lterm c None) ] - | [ "in" lconstr(c) ] -> [ In_T (mk_lterm c None) ] - | [ lconstr(x) "in" lconstr(c) ] -> - [ X_In_T (mk_lterm x None, mk_lterm c None) ] - | [ "in" lconstr(x) "in" lconstr(c) ] -> - [ In_X_In_T (mk_lterm x None, mk_lterm c None) ] - | [ lconstr(e) "in" lconstr(x) "in" lconstr(c) ] -> - [ E_In_X_In_T (mk_lterm e None, mk_lterm x None, mk_lterm c None) ] - | [ lconstr(e) "as" lconstr(x) "in" lconstr(c) ] -> - [ E_As_X_In_T (mk_lterm e None, mk_lterm x None, mk_lterm c None) ] -END - - +let interp_rpattern0 ist gl t = Tacmach.project gl, interp_rpattern ist t type cpattern = char * glob_constr_and_expr * Geninterp.interp_sign option let tag_of_cpattern = pi1 @@ -1015,8 +996,10 @@ type pattern = Evd.evar_map * (constr, constr) ssrpattern let id_of_cpattern (_, (c1, c2), _) = let open CAst in match DAst.get c1, c2 with - | _, Some { v = CRef ({CAst.v=Ident x}, _) } -> Some x - | _, Some { v = CAppExpl ((_, {CAst.v=Ident x}, _), []) } -> Some x + | _, Some { v = CRef (qid, _) } when qualid_is_ident qid -> + Some (qualid_basename qid) + | _, Some { v = CAppExpl ((_, qid, _), []) } when qualid_is_ident qid -> + Some (qualid_basename qid) | GRef (VarRef x, _), None -> Some x | _ -> None let id_of_Cterm t = match id_of_cpattern t with @@ -1042,52 +1025,9 @@ let interp_wit wit ist gl x = let interp_open_constr ist gl gc = interp_wit wit_open_constr ist gl gc let pf_intern_term gl (_, c, ist) = glob_constr ist (pf_env gl) (project gl) c -let pr_ssrterm _ _ _ = pr_term -let input_ssrtermkind strm = match stream_nth 0 strm with - | Tok.KEYWORD "(" -> '(' - | Tok.KEYWORD "@" -> '@' - | _ -> ' ' -let ssrtermkind = Pcoq.Gram.Entry.of_parser "ssrtermkind" input_ssrtermkind let interp_ssrterm ist gl t = Tacmach.project gl, interp_ssrterm ist t -ARGUMENT EXTEND cpattern - PRINTED BY pr_ssrterm - INTERPRETED BY interp_ssrterm - GLOBALIZED BY glob_cpattern SUBSTITUTED BY subst_ssrterm - RAW_PRINTED BY pr_ssrterm - GLOB_PRINTED BY pr_ssrterm -| [ "Qed" constr(c) ] -> [ mk_lterm c None ] -END - -GEXTEND Gram - GLOBAL: cpattern; - cpattern: [[ k = ssrtermkind; c = constr -> - let pattern = mk_term k c None in - if loc_ofCG pattern <> Some !@loc && k = '(' - then mk_term 'x' c None - else pattern ]]; -END - -ARGUMENT EXTEND lcpattern - TYPED AS cpattern - PRINTED BY pr_ssrterm - INTERPRETED BY interp_ssrterm - GLOBALIZED BY glob_cpattern SUBSTITUTED BY subst_ssrterm - RAW_PRINTED BY pr_ssrterm - GLOB_PRINTED BY pr_ssrterm -| [ "Qed" lconstr(c) ] -> [ mk_lterm c None ] -END - -GEXTEND Gram - GLOBAL: lcpattern; - lcpattern: [[ k = ssrtermkind; c = lconstr -> - let pattern = mk_term k c None in - if loc_ofCG pattern <> Some !@loc && k = '(' - then mk_term 'x' c None - else pattern ]]; -END - let interp_term gl = function | (_, c, Some ist) -> on_snd EConstr.Unsafe.to_constr (interp_open_constr ist gl c) @@ -1097,15 +1037,14 @@ let thin id sigma goal = let ids = Id.Set.singleton id in let env = Goal.V82.env sigma goal in let cl = Goal.V82.concl sigma goal in - let evdref = ref (Evd.clear_metas sigma) in + let sigma = Evd.clear_metas sigma in let ans = - try Some (Evarutil.clear_hyps_in_evi env evdref (Environ.named_context_val env) cl ids) + try Some (Evarutil.clear_hyps_in_evi env sigma (Environ.named_context_val env) cl ids) with Evarutil.ClearDependencyError _ -> None in match ans with | None -> sigma - | Some (hyps, concl) -> - let sigma = !evdref in + | Some (sigma, hyps, concl) -> let (gl,ev,sigma) = Goal.V82.mk_goal sigma hyps concl (Goal.V82.extra sigma goal) in let sigma = Goal.V82.partial_solution_to sigma goal gl ev in sigma @@ -1257,7 +1196,7 @@ let eval_pattern ?raise_NoMatch env0 sigma0 concl0 pattern occ do_subst = let fs sigma x = nf_evar sigma x in let pop_evar sigma e p = let { Evd.evar_body = e_body } as e_def = Evd.find sigma e in - let e_body = match e_body with Evar_defined c -> c + let e_body = match e_body with Evar_defined c -> EConstr.Unsafe.to_constr c | _ -> errorstrm (str "Matching the pattern " ++ pr_constr_env env0 sigma0 p ++ str " did not instantiate ?" ++ int (Evar.repr e) ++ spc () ++ str "Does the variable bound by the \"in\" construct occur "++ @@ -1408,10 +1347,6 @@ let is_wildcard ((_, (l, r), _) : cpattern) : bool = match DAst.get l, r with (* "ssrpattern" *) -ARGUMENT EXTEND ssrpatternarg TYPED AS rpattern PRINTED BY pr_rpattern -| [ rpattern(pat) ] -> [ pat ] -END - let pr_rpattern = pr_pattern let pf_merge_uc uc gl = @@ -1420,6 +1355,9 @@ let pf_merge_uc uc gl = let pf_unsafe_merge_uc uc gl = re_sig (sig_it gl) (Evd.set_universe_context (project gl) uc) +(** All the pattern types reuse the same dynamic toplevel tag *) +let wit_ssrpatternarg = wit_rpatternty + let interp_rpattern = interp_rpattern ~wit_ssrpatternarg let ssrpatterntac _ist arg gl = @@ -1428,7 +1366,7 @@ let ssrpatterntac _ist arg gl = let concl0 = pf_concl gl in let concl0 = EConstr.Unsafe.to_constr concl0 in let (t, uc), concl_x = - fill_occ_pattern (Global.env()) sigma0 concl0 pat noindex 1 in + fill_occ_pattern (pf_env gl) sigma0 concl0 pat noindex 1 in let t = EConstr.of_constr t in let concl_x = EConstr.of_constr concl_x in let gl, tty = pf_type_of gl t in @@ -1471,14 +1409,20 @@ let ssrinstancesof arg gl = done; raise NoMatch with NoMatch -> ppnl (str"END INSTANCES"); tclIDTAC gl -TACTIC EXTEND ssrinstoftpat -| [ "ssrinstancesoftpat" cpattern(arg) ] -> [ Proofview.V82.tactic (ssrinstancesof arg) ] -END - -(* We wipe out all the keywords generated by the grammar rules we defined. *) -(* The user is supposed to Require Import ssreflect or Require ssreflect *) -(* and Import ssreflect.SsrSyntax to obtain these keywords and as a *) -(* consequence the extended ssreflect grammar. *) -let () = CLexer.set_keyword_state frozen_lexer ;; +module Internal = +struct + let wit_rpatternty = wit_rpatternty + let glob_rpattern = glob_rpattern + let subst_rpattern = subst_rpattern + let interp_rpattern = interp_rpattern0 + let pr_rpattern = pr_rpattern + let mk_rpattern x = x + let mk_lterm = mk_lterm + let mk_term = mk_term + let glob_cpattern = glob_cpattern + let subst_ssrterm = subst_ssrterm + let interp_ssrterm = interp_ssrterm + let pr_ssrterm = pr_term +end (* vim: set filetype=ocaml foldmethod=marker: *) diff --git a/plugins/ssrmatching/ssrmatching.mli b/plugins/ssrmatching/ssrmatching.mli new file mode 100644 index 00000000..9c79879d --- /dev/null +++ b/plugins/ssrmatching/ssrmatching.mli @@ -0,0 +1,258 @@ +(************************************************************************) +(* * The Coq Proof Assistant / The Coq Development Team *) +(* v * INRIA, CNRS and contributors - Copyright 1999-2018 *) +(* <O___,, * (see CREDITS file for the list of authors) *) +(* \VV/ **************************************************************) +(* // * This file is distributed under the terms of the *) +(* * GNU Lesser General Public License Version 2.1 *) +(* * (see LICENSE file for the text of the license) *) +(************************************************************************) + +(* (c) Copyright 2006-2015 Microsoft Corporation and Inria. *) + +open Goal +open Environ +open Evd +open Constr + +open Ltac_plugin +open Tacexpr + +(** ******** Small Scale Reflection pattern matching facilities ************* *) + +(** Pattern parsing *) + +(** The type of context patterns, the patterns of the [set] tactic and + [:] tactical. These are patterns that identify a precise subterm. *) +type cpattern +val pr_cpattern : cpattern -> Pp.t + +(** The type of rewrite patterns, the patterns of the [rewrite] tactic. + These patterns also include patterns that identify all the subterms + of a context (i.e. "in" prefix) *) +type rpattern +val pr_rpattern : rpattern -> Pp.t + +(** Pattern interpretation and matching *) + +exception NoMatch +exception NoProgress + +(** AST for [rpattern] (and consequently [cpattern]) *) +type ('ident, 'term) ssrpattern = + | T of 'term + | In_T of 'term + | X_In_T of 'ident * 'term + | In_X_In_T of 'ident * 'term + | E_In_X_In_T of 'term * 'ident * 'term + | E_As_X_In_T of 'term * 'ident * 'term + +type pattern = evar_map * (constr, constr) ssrpattern +val pp_pattern : pattern -> Pp.t + +(** Extracts the redex and applies to it the substitution part of the pattern. + @raise Anomaly if called on [In_T] or [In_X_In_T] *) +val redex_of_pattern : + ?resolve_typeclasses:bool -> env -> pattern -> + constr Evd.in_evar_universe_context + +(** [interp_rpattern ise gl rpat] "internalizes" and "interprets" [rpat] + in the current [Ltac] interpretation signature [ise] and tactic input [gl]*) +val interp_rpattern : + goal sigma -> + rpattern -> + pattern + +(** [interp_cpattern ise gl cpat ty] "internalizes" and "interprets" [cpat] + in the current [Ltac] interpretation signature [ise] and tactic input [gl]. + [ty] is an optional type for the redex of [cpat] *) +val interp_cpattern : + goal sigma -> + cpattern -> (glob_constr_and_expr * Geninterp.interp_sign) option -> + pattern + +(** The set of occurrences to be matched. The boolean is set to true + * to signal the complement of this set (i.e. \{-1 3\}) *) +type occ = (bool * int list) option + +(** [subst e p t i]. [i] is the number of binders + traversed so far, [p] the term from the pattern, [t] the matched one *) +type subst = env -> constr -> constr -> int -> constr + +(** [eval_pattern b env sigma t pat occ subst] maps [t] calling [subst] on every + [occ] occurrence of [pat]. The [int] argument is the number of + binders traversed. If [pat] is [None] then then subst is called on [t]. + [t] must live in [env] and [sigma], [pat] must have been interpreted in + (an extension of) [sigma]. + @raise NoMatch if [pat] has no occurrence and [b] is [true] (default [false]) + @return [t] where all [occ] occurrences of [pat] have been mapped using + [subst] *) +val eval_pattern : + ?raise_NoMatch:bool -> + env -> evar_map -> constr -> + pattern option -> occ -> subst -> + constr + +(** [fill_occ_pattern b env sigma t pat occ h] is a simplified version of + [eval_pattern]. + It replaces all [occ] occurrences of [pat] in [t] with Rel [h]. + [t] must live in [env] and [sigma], [pat] must have been interpreted in + (an extension of) [sigma]. + @raise NoMatch if [pat] has no occurrence and [b] is [true] (default [false]) + @return the instance of the redex of [pat] that was matched and [t] + transformed as described above. *) +val fill_occ_pattern : + ?raise_NoMatch:bool -> + env -> evar_map -> constr -> + pattern -> occ -> int -> + constr Evd.in_evar_universe_context * constr + +(** *************************** Low level APIs ****************************** *) + +(* The primitive matching facility. It matches of a term with holes, like + the T pattern above, and calls a continuation on its occurrences. *) + +type ssrdir = L2R | R2L +val pr_dir_side : ssrdir -> Pp.t + +(** a pattern for a term with wildcards *) +type tpattern + +(** [mk_tpattern env sigma0 sigma_p ok p_origin dir t] compiles a term [t] + living in [env] [sigma] (an extension of [sigma0]) intro a [tpattern]. + The [tpattern] can hold a (proof) term [p] and a diction [dir]. The [ok] + callback is used to filter occurrences. + @return the compiled [tpattern] and its [evar_map] + @raise UserEerror is the pattern is a wildcard *) +val mk_tpattern : + ?p_origin:ssrdir * constr -> + env -> evar_map -> + evar_map * constr -> + (constr -> evar_map -> bool) -> + ssrdir -> constr -> + evar_map * tpattern + +(** [findP env t i k] is a stateful function that finds the next occurrence + of a tpattern and calls the callback [k] to map the subterm matched. + The [int] argument passed to [k] is the number of binders traversed so far + plus the initial value [i]. + @return [t] where the subterms identified by the selected occurrences of + the patter have been mapped using [k] + @raise NoMatch if the raise_NoMatch flag given to [mk_tpattern_matcher] is + [true] and if the pattern did not match + @raise UserEerror if the raise_NoMatch flag given to [mk_tpattern_matcher] is + [false] and if the pattern did not match *) +type find_P = + env -> constr -> int -> k:subst -> constr + +(** [conclude ()] asserts that all mentioned ocurrences have been visited. + @return the instance of the pattern, the evarmap after the pattern + instantiation, the proof term and the ssrdit stored in the tpattern + @raise UserEerror if too many occurrences were specified *) +type conclude = + unit -> constr * ssrdir * (evar_map * UState.t * constr) + +(** [mk_tpattern_matcher b o sigma0 occ sigma_tplist] creates a pair + a function [find_P] and [conclude] with the behaviour explained above. + The flag [b] (default [false]) changes the error reporting behaviour + of [find_P] if none of the [tpattern] matches. The argument [o] can + be passed to tune the [UserError] eventually raised (useful if the + pattern is coming from the LHS/RHS of an equation) *) +val mk_tpattern_matcher : + ?all_instances:bool -> + ?raise_NoMatch:bool -> + ?upats_origin:ssrdir * constr -> + evar_map -> occ -> evar_map * tpattern list -> + find_P * conclude + +(** Example of [mk_tpattern_matcher] to implement + [rewrite \{occ\}\[in t\]rules]. + It first matches "in t" (called [pat]), then in all matched subterms + it matches the LHS of the rules using [find_R]. + [concl0] is the initial goal, [concl] will be the goal where some terms + are replaced by a De Bruijn index. The [rw_progress] extra check + selects only occurrences that are not rewritten to themselves (e.g. + an occurrence "x + x" rewritten with the commutativity law of addition + is skipped) {[ + let find_R, conclude = match pat with + | Some (_, In_T _) -> + let aux (sigma, pats) (d, r, lhs, rhs) = + let sigma, pat = + mk_tpattern env0 sigma0 (sigma, r) (rw_progress rhs) d lhs in + sigma, pats @ [pat] in + let rpats = List.fold_left aux (r_sigma, []) rules in + let find_R, end_R = mk_tpattern_matcher sigma0 occ rpats in + find_R ~k:(fun _ _ h -> mkRel h), + fun cl -> let rdx, d, r = end_R () in (d,r),rdx + | _ -> ... in + let concl = eval_pattern env0 sigma0 concl0 pat occ find_R in + let (d, r), rdx = conclude concl in ]} *) + +(* convenience shortcut: [pf_fill_occ_term gl occ (sigma,t)] returns + * the conclusion of [gl] where [occ] occurrences of [t] have been replaced + * by [Rel 1] and the instance of [t] *) +val pf_fill_occ_term : goal sigma -> occ -> evar_map * EConstr.t -> EConstr.t * EConstr.t + +(* It may be handy to inject a simple term into the first form of cpattern *) +val cpattern_of_term : char * glob_constr_and_expr -> Geninterp.interp_sign -> cpattern + +(** Helpers to make stateful closures. Example: a [find_P] function may be + called many times, but the pattern instantiation phase is performed only the + first time. The corresponding [conclude] has to return the instantiated + pattern redex. Since it is up to [find_P] to raise [NoMatch] if the pattern + has no instance, [conclude] considers it an anomaly if the pattern did + not match *) + +(** [do_once r f] calls [f] and updates the ref only once *) +val do_once : 'a option ref -> (unit -> 'a) -> unit +(** [assert_done r] return the content of r. @raise Anomaly is r is [None] *) +val assert_done : 'a option ref -> 'a + +(** Very low level APIs. + these are calls to evarconv's [the_conv_x] followed by + [solve_unif_constraints_with_heuristics] and [resolve_typeclasses]. + In case of failure they raise [NoMatch] *) + +val unify_HO : env -> evar_map -> EConstr.constr -> EConstr.constr -> evar_map +val pf_unify_HO : goal sigma -> EConstr.constr -> EConstr.constr -> goal sigma + +(** Some more low level functions needed to implement the full SSR language + on top of the former APIs *) +val tag_of_cpattern : cpattern -> char +val loc_of_cpattern : cpattern -> Loc.t option +val id_of_pattern : pattern -> Names.Id.t option +val is_wildcard : cpattern -> bool +val cpattern_of_id : Names.Id.t -> cpattern +val pr_constr_pat : constr -> Pp.t +val pf_merge_uc : UState.t -> goal Evd.sigma -> goal Evd.sigma +val pf_unsafe_merge_uc : UState.t -> goal Evd.sigma -> goal Evd.sigma + +(* One can also "Set SsrMatchingDebug" from a .v *) +val debug : bool -> unit + +(* One should delimit a snippet with "Set SsrMatchingProfiling" and + * "Unset SsrMatchingProfiling" to get timings *) +val profile : bool -> unit + +val ssrinstancesof : cpattern -> Tacmach.tactic + +(** Functions used for grammar extensions. Do not use. *) + +module Internal : +sig + val wit_rpatternty : (rpattern, rpattern, rpattern) Genarg.genarg_type + val glob_rpattern : Genintern.glob_sign -> rpattern -> rpattern + val subst_rpattern : Mod_subst.substitution -> rpattern -> rpattern + val interp_rpattern : Geninterp.interp_sign -> Proof_type.goal Evd.sigma -> rpattern -> Evd.evar_map * rpattern + val pr_rpattern : rpattern -> Pp.t + val mk_rpattern : (cpattern, cpattern) ssrpattern -> rpattern + val mk_lterm : Constrexpr.constr_expr -> Geninterp.interp_sign option -> cpattern + val mk_term : char -> Constrexpr.constr_expr -> Geninterp.interp_sign option -> cpattern + + val glob_cpattern : Genintern.glob_sign -> cpattern -> cpattern + val subst_ssrterm : Mod_subst.substitution -> cpattern -> cpattern + val interp_ssrterm : Geninterp.interp_sign -> Proof_type.goal Evd.sigma -> cpattern -> Evd.evar_map * cpattern + val pr_ssrterm : cpattern -> Pp.t +end + +(* eof *) diff --git a/plugins/ssrmatching/ssrmatching.v b/plugins/ssrmatching/ssrmatching.v new file mode 100644 index 00000000..fee09cc9 --- /dev/null +++ b/plugins/ssrmatching/ssrmatching.v @@ -0,0 +1,36 @@ +(************************************************************************) +(* * The Coq Proof Assistant / The Coq Development Team *) +(* v * INRIA, CNRS and contributors - Copyright 1999-2018 *) +(* <O___,, * (see CREDITS file for the list of authors) *) +(* \VV/ **************************************************************) +(* // * This file is distributed under the terms of the *) +(* * GNU Lesser General Public License Version 2.1 *) +(* * (see LICENSE file for the text of the license) *) +(************************************************************************) + +(* (c) Copyright 2006-2015 Microsoft Corporation and Inria. *) + +Declare ML Module "ssrmatching_plugin". + +Module SsrMatchingSyntax. + +(* Reserve the notation for rewrite patterns so that the user is not allowed *) +(* to declare it at a different level. *) +Reserved Notation "( a 'in' b )" (at level 0). +Reserved Notation "( a 'as' b )" (at level 0). +Reserved Notation "( a 'in' b 'in' c )" (at level 0). +Reserved Notation "( a 'as' b 'in' c )" (at level 0). + +(* Notation to define shortcuts for the "X in t" part of a pattern. *) +Notation "( X 'in' t )" := (_ : fun X => t) : ssrpatternscope. +Delimit Scope ssrpatternscope with pattern. + +(* Some shortcuts for recurrent "X in t" parts. *) +Notation RHS := (X in _ = X)%pattern. +Notation LHS := (X in X = _)%pattern. + +End SsrMatchingSyntax. + +Export SsrMatchingSyntax. + +Tactic Notation "ssrpattern" ssrpatternarg(p) := ssrpattern p . diff --git a/plugins/ssrmatching/ssrmatching_plugin.mlpack b/plugins/ssrmatching/ssrmatching_plugin.mlpack index 5fb1f156..02c75f14 100644 --- a/plugins/ssrmatching/ssrmatching_plugin.mlpack +++ b/plugins/ssrmatching/ssrmatching_plugin.mlpack @@ -1 +1,2 @@ Ssrmatching +G_ssrmatching |