From 6b5b4db599333546334bcdbd852be72ddb39d9dc Mon Sep 17 00:00:00 2001 From: Pierre-Marie Pédrot Date: Thu, 11 Oct 2018 18:13:12 +0200 Subject: Deprecating the RAW_TYPED and GLOB_TYPED stanzas of the ARGUMENT EXTEND macro. Those optional arguments did not really make sense. It was pretty clear from our code base, as all instances where triplicating the same type for TYPED, RAW_TYPED and GLOB_TYPED. --- plugins/ssr/ssrvernac.ml4 | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'plugins/ssr') diff --git a/plugins/ssr/ssrvernac.ml4 b/plugins/ssr/ssrvernac.ml4 index 989a6c5bf1..d62656f95f 100644 --- a/plugins/ssr/ssrvernac.ml4 +++ b/plugins/ssr/ssrvernac.ml4 @@ -491,9 +491,10 @@ let mkhintref ?loc c n = match c.CAst.v with | _ -> mkAppC (c, mkCHoles ?loc n) ARGUMENT EXTEND ssrhintref - PRINTED BY pr_ssrhintref - RAW_TYPED AS constr RAW_PRINTED BY pr_raw_ssrhintref - GLOB_TYPED AS constr GLOB_PRINTED BY pr_glob_ssrhintref + TYPED AS constr + PRINTED BY pr_ssrhintref + RAW_PRINTED BY pr_raw_ssrhintref + GLOB_PRINTED BY pr_glob_ssrhintref | [ constr(c) ] -> [ c ] | [ constr(c) "|" natural(n) ] -> [ mkhintref ~loc c n ] END -- cgit v1.2.3 From dba567555fed9c88887b463a975c3d7e0852ebd3 Mon Sep 17 00:00:00 2001 From: Pierre-Marie Pédrot Date: Thu, 11 Oct 2018 19:17:47 +0200 Subject: Plug ARGUMENT EXTEND into the argument extension API. --- plugins/ssr/ssrparser.ml4 | 1 - plugins/ssr/ssrvernac.ml4 | 1 - 2 files changed, 2 deletions(-) (limited to 'plugins/ssr') diff --git a/plugins/ssr/ssrparser.ml4 b/plugins/ssr/ssrparser.ml4 index e4a0910673..319f58931a 100644 --- a/plugins/ssr/ssrparser.ml4 +++ b/plugins/ssr/ssrparser.ml4 @@ -15,7 +15,6 @@ open Names open Pp open Pcoq open Ltac_plugin -open Genarg open Stdarg open Tacarg open Libnames diff --git a/plugins/ssr/ssrvernac.ml4 b/plugins/ssr/ssrvernac.ml4 index d62656f95f..02a5d08507 100644 --- a/plugins/ssr/ssrvernac.ml4 +++ b/plugins/ssr/ssrvernac.ml4 @@ -25,7 +25,6 @@ open Notation_ops open Notation_term open Glob_term open Stdarg -open Genarg open Decl_kinds open Pp open Ppconstr -- cgit v1.2.3 From 4da233a9685cd193a84def037ec18a27c9225dce Mon Sep 17 00:00:00 2001 From: Pierre-Marie Pédrot Date: Fri, 12 Oct 2018 09:22:56 +0200 Subject: Port remaining EXTEND ml4 files to coqpp. Almost all of ml4 were removed in the process. The only remaining files are in the test-suite and probably need a bit of fiddling with coq_makefile, and there only two really remaning ml4 files containing code. --- plugins/ssr/ssrparser.ml4 | 2348 ---------------------------------------- plugins/ssr/ssrparser.mlg | 2628 +++++++++++++++++++++++++++++++++++++++++++++ plugins/ssr/ssrvernac.ml4 | 625 ----------- plugins/ssr/ssrvernac.mlg | 675 ++++++++++++ 4 files changed, 3303 insertions(+), 2973 deletions(-) delete mode 100644 plugins/ssr/ssrparser.ml4 create mode 100644 plugins/ssr/ssrparser.mlg delete mode 100644 plugins/ssr/ssrvernac.ml4 create mode 100644 plugins/ssr/ssrvernac.mlg (limited to 'plugins/ssr') diff --git a/plugins/ssr/ssrparser.ml4 b/plugins/ssr/ssrparser.ml4 deleted file mode 100644 index 319f58931a..0000000000 --- a/plugins/ssr/ssrparser.ml4 +++ /dev/null @@ -1,2348 +0,0 @@ -(************************************************************************) -(* * The Coq Proof Assistant / The Coq Development Team *) -(* v * INRIA, CNRS and contributors - Copyright 1999-2018 *) -(* [ CErrors.anomaly (Pp.str "Grammar placeholder match") ] -END -GEXTEND Gram - GLOBAL: ssrtacarg; - ssrtacarg: [[ tac = tactic_expr LEVEL "5" -> tac ]]; -END - -(* Lexically closed tactic for tacticals. *) -let pr_ssrtclarg _ _ prt tac = prt tacltop tac -ARGUMENT EXTEND ssrtclarg TYPED AS ssrtacarg - PRINTED BY pr_ssrtclarg -| [ ssrtacarg(tac) ] -> [ tac ] -END - -open Genarg - -(** Adding a new uninterpreted generic argument type *) -let add_genarg tag pr = - let wit = Genarg.make0 tag in - let tag = Geninterp.Val.create tag in - let glob ist x = (ist, x) in - let subst _ x = x in - let interp ist x = Ftactic.return (Geninterp.Val.Dyn (tag, x)) in - let gen_pr _ _ _ = pr in - let () = Genintern.register_intern0 wit glob in - let () = Genintern.register_subst0 wit subst in - let () = Geninterp.register_interp0 wit interp in - let () = Geninterp.register_val0 wit (Some (Geninterp.Val.Base tag)) in - Pptactic.declare_extra_genarg_pprule wit gen_pr gen_pr gen_pr; - wit - -(** Primitive parsing to avoid syntax conflicts with basic tactics. *) - -let accept_before_syms syms strm = - match Util.stream_nth 1 strm with - | Tok.KEYWORD sym when List.mem sym syms -> () - | _ -> raise Stream.Failure - -let accept_before_syms_or_any_id syms strm = - match Util.stream_nth 1 strm with - | Tok.KEYWORD sym when List.mem sym syms -> () - | Tok.IDENT _ -> () - | _ -> raise Stream.Failure - -let accept_before_syms_or_ids syms ids strm = - match Util.stream_nth 1 strm with - | Tok.KEYWORD sym when List.mem sym syms -> () - | Tok.IDENT id when List.mem id ids -> () - | _ -> raise Stream.Failure - -open Ssrast -let pr_id = Ppconstr.pr_id -let pr_name = function Name id -> pr_id id | Anonymous -> str "_" -let pr_spc () = str " " -let pr_list = prlist_with_sep - -(**************************** ssrhyp **************************************) - -let pr_ssrhyp _ _ _ = pr_hyp - -let wit_ssrhyprep = add_genarg "ssrhyprep" pr_hyp - -let intern_hyp ist (SsrHyp (loc, id) as hyp) = - let _ = Tacintern.intern_genarg ist (in_gen (rawwit wit_var) CAst.(make ?loc id)) in - if not_section_id id then hyp else - hyp_err ?loc "Can't clear section hypothesis " id - -open Pcoq.Prim - -ARGUMENT EXTEND ssrhyp TYPED AS ssrhyprep PRINTED BY pr_ssrhyp - INTERPRETED BY interp_hyp - GLOBALIZED BY intern_hyp - | [ ident(id) ] -> [ SsrHyp (Loc.tag ~loc id) ] -END - - -let pr_hoi = hoik pr_hyp -let pr_ssrhoi _ _ _ = pr_hoi - -let wit_ssrhoirep = add_genarg "ssrhoirep" pr_hoi - -let intern_ssrhoi ist = function - | Hyp h -> Hyp (intern_hyp ist h) - | Id (SsrHyp (_, id)) as hyp -> - let _ = Tacintern.intern_genarg ist (in_gen (rawwit wit_ident) id) in - hyp - -let interp_ssrhoi ist gl = function - | Hyp h -> let s, h' = interp_hyp ist gl h in s, Hyp h' - | Id (SsrHyp (loc, id)) -> - let s, id' = interp_wit wit_ident ist gl id in - s, Id (SsrHyp (loc, id')) - -ARGUMENT EXTEND ssrhoi_hyp TYPED AS ssrhoirep PRINTED BY pr_ssrhoi - INTERPRETED BY interp_ssrhoi - GLOBALIZED BY intern_ssrhoi - | [ ident(id) ] -> [ Hyp (SsrHyp(Loc.tag ~loc id)) ] -END -ARGUMENT EXTEND ssrhoi_id TYPED AS ssrhoirep PRINTED BY pr_ssrhoi - INTERPRETED BY interp_ssrhoi - GLOBALIZED BY intern_ssrhoi - | [ ident(id) ] -> [ Id (SsrHyp(Loc.tag ~loc id)) ] -END - - -let pr_ssrhyps _ _ _ = pr_hyps - -ARGUMENT EXTEND ssrhyps TYPED AS ssrhyp list PRINTED BY pr_ssrhyps - INTERPRETED BY interp_hyps - | [ ssrhyp_list(hyps) ] -> [ check_hyps_uniq [] hyps; hyps ] -END - -(** Rewriting direction *) - - -let pr_rwdir = function L2R -> mt() | R2L -> str "-" - -let wit_ssrdir = add_genarg "ssrdir" pr_dir - -(** Simpl switch *) - -let pr_ssrsimpl _ _ _ = pr_simpl - -let wit_ssrsimplrep = add_genarg "ssrsimplrep" pr_simpl - -let test_ssrslashnum b1 b2 strm = - match Util.stream_nth 0 strm with - | Tok.KEYWORD "/" -> - (match Util.stream_nth 1 strm with - | Tok.INT _ when b1 -> - (match Util.stream_nth 2 strm with - | Tok.KEYWORD "=" | Tok.KEYWORD "/=" when not b2 -> () - | Tok.KEYWORD "/" -> - if not b2 then () else begin - match Util.stream_nth 3 strm with - | Tok.INT _ -> () - | _ -> raise Stream.Failure - end - | _ -> raise Stream.Failure) - | Tok.KEYWORD "/" when not b1 -> - (match Util.stream_nth 2 strm with - | Tok.KEYWORD "=" when not b2 -> () - | Tok.INT _ when b2 -> - (match Util.stream_nth 3 strm with - | Tok.KEYWORD "=" -> () - | _ -> raise Stream.Failure) - | _ when not b2 -> () - | _ -> raise Stream.Failure) - | Tok.KEYWORD "=" when not b1 && not b2 -> () - | _ -> raise Stream.Failure) - | Tok.KEYWORD "//" when not b1 -> - (match Util.stream_nth 1 strm with - | Tok.KEYWORD "=" when not b2 -> () - | Tok.INT _ when b2 -> - (match Util.stream_nth 2 strm with - | Tok.KEYWORD "=" -> () - | _ -> raise Stream.Failure) - | _ when not b2 -> () - | _ -> raise Stream.Failure) - | _ -> raise Stream.Failure - -let test_ssrslashnum10 = test_ssrslashnum true false -let test_ssrslashnum11 = test_ssrslashnum true true -let test_ssrslashnum01 = test_ssrslashnum false true -let test_ssrslashnum00 = test_ssrslashnum false false - -let negate_parser f x = - let rc = try Some (f x) with Stream.Failure -> None in - match rc with - | None -> () - | Some _ -> raise Stream.Failure - -let test_not_ssrslashnum = - Pcoq.Gram.Entry.of_parser - "test_not_ssrslashnum" (negate_parser test_ssrslashnum10) -let test_ssrslashnum00 = - Pcoq.Gram.Entry.of_parser "test_ssrslashnum01" test_ssrslashnum00 -let test_ssrslashnum10 = - Pcoq.Gram.Entry.of_parser "test_ssrslashnum10" test_ssrslashnum10 -let test_ssrslashnum11 = - Pcoq.Gram.Entry.of_parser "test_ssrslashnum11" test_ssrslashnum11 -let test_ssrslashnum01 = - Pcoq.Gram.Entry.of_parser "test_ssrslashnum01" test_ssrslashnum01 - - -ARGUMENT EXTEND ssrsimpl_ne TYPED AS ssrsimplrep PRINTED BY pr_ssrsimpl -| [ "//=" ] -> [ SimplCut (~-1,~-1) ] -| [ "/=" ] -> [ Simpl ~-1 ] -END - -Pcoq.(Prim.( -GEXTEND Gram - GLOBAL: ssrsimpl_ne; - ssrsimpl_ne: [ - [ test_ssrslashnum11; "/"; n = natural; "/"; m = natural; "=" -> SimplCut(n,m) - | test_ssrslashnum10; "/"; n = natural; "/" -> Cut n - | test_ssrslashnum10; "/"; n = natural; "=" -> Simpl n - | test_ssrslashnum10; "/"; n = natural; "/=" -> SimplCut (n,~-1) - | test_ssrslashnum10; "/"; n = natural; "/"; "=" -> SimplCut (n,~-1) - | test_ssrslashnum01; "//"; m = natural; "=" -> SimplCut (~-1,m) - | test_ssrslashnum00; "//" -> Cut ~-1 - ]]; - -END -)) - -ARGUMENT EXTEND ssrsimpl TYPED AS ssrsimplrep PRINTED BY pr_ssrsimpl -| [ ssrsimpl_ne(sim) ] -> [ sim ] -| [ ] -> [ Nop ] -END - - -let pr_ssrclear _ _ _ = pr_clear mt - -ARGUMENT EXTEND ssrclear_ne TYPED AS ssrhyps PRINTED BY pr_ssrclear -| [ "{" ne_ssrhyp_list(clr) "}" ] -> [ check_hyps_uniq [] clr; clr ] -END - -ARGUMENT EXTEND ssrclear TYPED AS ssrclear_ne PRINTED BY pr_ssrclear -| [ ssrclear_ne(clr) ] -> [ clr ] -| [ ] -> [ [] ] -END - -(** Indexes *) - -(* Since SSR indexes are always positive numbers, we use the 0 value *) -(* to encode an omitted index. We reuse the in or_var type, but we *) -(* supply our own interpretation function, which checks for non *) -(* positive values, and allows the use of constr numerals, so that *) -(* e.g., "let n := eval compute in (1 + 3) in (do n!clear)" works. *) - - -let pr_index = function - | ArgVar {CAst.v=id} -> pr_id id - | ArgArg n when n > 0 -> int n - | _ -> mt () -let pr_ssrindex _ _ _ = pr_index - -let noindex = ArgArg 0 - -let check_index ?loc i = - if i > 0 then i else CErrors.user_err ?loc (str"Index not positive") -let mk_index ?loc = function - | ArgArg i -> ArgArg (check_index ?loc i) - | iv -> iv - -let interp_index ist gl idx = - Tacmach.project gl, - match idx with - | ArgArg _ -> idx - | ArgVar id -> - let i = - try - let v = Id.Map.find id.CAst.v ist.Tacinterp.lfun in - begin match Tacinterp.Value.to_int v with - | Some i -> i - | None -> - begin match Tacinterp.Value.to_constr v with - | Some c -> - let rc = Detyping.detype Detyping.Now false Id.Set.empty (pf_env gl) (project gl) c in - begin match Notation.uninterp_prim_token rc with - | _, Constrexpr.Numeral (s,b) -> - let n = int_of_string s in if b then n else -n - | _ -> raise Not_found - end - | None -> raise Not_found - end end - with _ -> CErrors.user_err ?loc:id.CAst.loc (str"Index not a number") in - ArgArg (check_index ?loc:id.CAst.loc i) - -open Pltac - -ARGUMENT EXTEND ssrindex PRINTED BY pr_ssrindex - INTERPRETED BY interp_index -| [ int_or_var(i) ] -> [ mk_index ~loc i ] -END - - -(** Occurrence switch *) - -(* The standard syntax of complemented occurrence lists involves a single *) -(* initial "-", e.g., {-1 3 5}. An initial *) -(* "+" may be used to indicate positive occurrences (the default). The *) -(* "+" is optional, except if the list of occurrences starts with a *) -(* variable or is empty (to avoid confusion with a clear switch). The *) -(* empty positive switch "{+}" selects no occurrences, while the empty *) -(* negative switch "{-}" selects all occurrences explicitly; this is the *) -(* default, but "{-}" prevents the implicit clear, and can be used to *) -(* force dependent elimination -- see ndefectelimtac below. *) - - -let pr_ssrocc _ _ _ = pr_occ - -open Pcoq.Prim - -ARGUMENT EXTEND ssrocc TYPED AS (bool * int list) option PRINTED BY pr_ssrocc -| [ natural(n) natural_list(occ) ] -> [ - Some (false, List.map (check_index ~loc) (n::occ)) ] -| [ "-" natural_list(occ) ] -> [ Some (true, occ) ] -| [ "+" natural_list(occ) ] -> [ Some (false, occ) ] -END - - -(* modality *) - - -let pr_mmod = function May -> str "?" | Must -> str "!" | Once -> mt () - -let wit_ssrmmod = add_genarg "ssrmmod" pr_mmod -let ssrmmod = Pcoq.create_generic_entry Pcoq.utactic "ssrmmod" (Genarg.rawwit wit_ssrmmod);; - -GEXTEND Gram - GLOBAL: ssrmmod; - ssrmmod: [[ "!" -> Must | LEFTQMARK -> May | "?" -> May]]; -END - -(** Rewrite multiplier: !n ?n *) - -let pr_mult (n, m) = - if n > 0 && m <> Once then int n ++ pr_mmod m else pr_mmod m - -let pr_ssrmult _ _ _ = pr_mult - -ARGUMENT EXTEND ssrmult_ne TYPED AS int * ssrmmod PRINTED BY pr_ssrmult - | [ natural(n) ssrmmod(m) ] -> [ check_index ~loc n, m ] - | [ ssrmmod(m) ] -> [ notimes, m ] -END - -ARGUMENT EXTEND ssrmult TYPED AS ssrmult_ne PRINTED BY pr_ssrmult - | [ ssrmult_ne(m) ] -> [ m ] - | [ ] -> [ nomult ] -END - -(** Discharge occ switch (combined occurrence / clear switch *) - -let pr_docc = function - | None, occ -> pr_occ occ - | Some clr, _ -> pr_clear mt clr - -let pr_ssrdocc _ _ _ = pr_docc - -ARGUMENT EXTEND ssrdocc TYPED AS ssrclear option * ssrocc PRINTED BY pr_ssrdocc -| [ "{" ssrocc(occ) "}" ] -> [ mkocc occ ] -| [ "{" ssrhyp_list(clr) "}" ] -> [ mkclr clr ] -END - -(* Old kinds of terms *) - -let input_ssrtermkind strm = match Util.stream_nth 0 strm with - | Tok.KEYWORD "(" -> xInParens - | Tok.KEYWORD "@" -> xWithAt - | _ -> xNoFlag - -let ssrtermkind = Pcoq.Gram.Entry.of_parser "ssrtermkind" input_ssrtermkind - -(* New kinds of terms *) - -let input_term_annotation strm = - match Stream.npeek 2 strm with - | Tok.KEYWORD "(" :: Tok.KEYWORD "(" :: _ -> `DoubleParens - | Tok.KEYWORD "(" :: _ -> `Parens - | Tok.KEYWORD "@" :: _ -> `At - | _ -> `None -let term_annotation = - Gram.Entry.of_parser "term_annotation" input_term_annotation - -(* terms *) - -(** Terms parsing. ********************************************************) - -(* Because we allow wildcards in term references, we need to stage the *) -(* interpretation of terms so that it occurs at the right time during *) -(* the execution of the tactic (e.g., so that we don't report an error *) -(* for a term that isn't actually used in the execution). *) -(* The term representation tracks whether the concrete initial term *) -(* started with an opening paren, which might avoid a conflict between *) -(* the ssrreflect term syntax and Gallina notation. *) - -(* Old terms *) -let pr_ssrterm _ _ _ = pr_term -let glob_ssrterm gs = function - | k, (_, Some c) -> k, Tacintern.intern_constr gs c - | ct -> ct -let subst_ssrterm s (k, c) = k, Tacsubst.subst_glob_constr_and_expr s c -let interp_ssrterm _ gl t = Tacmach.project gl, t - -open Pcoq.Constr - -ARGUMENT EXTEND ssrterm - PRINTED BY pr_ssrterm - INTERPRETED BY interp_ssrterm - GLOBALIZED BY glob_ssrterm SUBSTITUTED BY subst_ssrterm - RAW_PRINTED BY pr_ssrterm - GLOB_PRINTED BY pr_ssrterm -| [ "YouShouldNotTypeThis" constr(c) ] -> [ mk_lterm c ] -END - - -GEXTEND Gram - GLOBAL: ssrterm; - ssrterm: [[ k = ssrtermkind; c = Pcoq.Constr.constr -> mk_term k c ]]; -END - -(* New terms *) - -let pp_ast_closure_term _ _ _ = pr_ast_closure_term - -ARGUMENT EXTEND ast_closure_term - PRINTED BY pp_ast_closure_term - INTERPRETED BY interp_ast_closure_term - GLOBALIZED BY glob_ast_closure_term - SUBSTITUTED BY subst_ast_closure_term - RAW_PRINTED BY pp_ast_closure_term - GLOB_PRINTED BY pp_ast_closure_term - | [ term_annotation(a) constr(c) ] -> [ mk_ast_closure_term a c ] -END -ARGUMENT EXTEND ast_closure_lterm - PRINTED BY pp_ast_closure_term - INTERPRETED BY interp_ast_closure_term - GLOBALIZED BY glob_ast_closure_term - SUBSTITUTED BY subst_ast_closure_term - RAW_PRINTED BY pp_ast_closure_term - GLOB_PRINTED BY pp_ast_closure_term - | [ term_annotation(a) lconstr(c) ] -> [ mk_ast_closure_term a c ] -END - -(* Old Views *) - -let pr_view = pr_list mt (fun c -> str "/" ++ pr_term c) - -let pr_ssrbwdview _ _ _ = pr_view - -ARGUMENT EXTEND ssrbwdview TYPED AS ssrterm list - PRINTED BY pr_ssrbwdview -| [ "YouShouldNotTypeThis" ] -> [ [] ] -END - -Pcoq.( -GEXTEND Gram - GLOBAL: ssrbwdview; - ssrbwdview: [ - [ test_not_ssrslashnum; "/"; c = Pcoq.Constr.constr -> [mk_term xNoFlag c] - | test_not_ssrslashnum; "/"; c = Pcoq.Constr.constr; w = ssrbwdview -> - (mk_term xNoFlag c) :: w ]]; -END -) - -(* New Views *) - - -let pr_ssrfwdview _ _ _ = pr_view2 - -ARGUMENT EXTEND ssrfwdview TYPED AS ast_closure_term list - PRINTED BY pr_ssrfwdview -| [ "YouShouldNotTypeThis" ] -> [ [] ] -END - -Pcoq.( -GEXTEND Gram - GLOBAL: ssrfwdview; - ssrfwdview: [ - [ test_not_ssrslashnum; "/"; c = Pcoq.Constr.constr -> - [mk_ast_closure_term `None c] - | test_not_ssrslashnum; "/"; c = Pcoq.Constr.constr; w = ssrfwdview -> - (mk_ast_closure_term `None c) :: w ]]; -END -) - -(* }}} *) - -(* ipats *) - - -let remove_loc x = x.CAst.v - -let ipat_of_intro_pattern p = Tactypes.( - let rec ipat_of_intro_pattern = function - | IntroNaming (IntroIdentifier id) -> IPatId id - | IntroAction IntroWildcard -> IPatAnon Drop - | IntroAction (IntroOrAndPattern (IntroOrPattern iorpat)) -> - IPatCase - (List.map (List.map ipat_of_intro_pattern) - (List.map (List.map remove_loc) iorpat)) - | IntroAction (IntroOrAndPattern (IntroAndPattern iandpat)) -> - IPatCase - [List.map ipat_of_intro_pattern (List.map remove_loc iandpat)] - | IntroNaming IntroAnonymous -> IPatAnon One - | IntroAction (IntroRewrite b) -> IPatRewrite (allocc, if b then L2R else R2L) - | IntroNaming (IntroFresh id) -> IPatAnon One - | IntroAction (IntroApplyOn _) -> (* to do *) CErrors.user_err (Pp.str "TO DO") - | IntroAction (IntroInjection ips) -> - IPatInj [List.map ipat_of_intro_pattern (List.map remove_loc ips)] - | IntroForthcoming _ -> - (* Unable to determine which kind of ipat interp_introid could - * return [HH] *) - assert false - in - ipat_of_intro_pattern p -) - -let rec map_ipat map_id map_ssrhyp map_ast_closure_term = function - | (IPatSimpl _ | IPatAnon _ | IPatRewrite _ | IPatNoop) as x -> x - | IPatId id -> IPatId (map_id id) - | IPatAbstractVars l -> IPatAbstractVars (List.map map_id l) - | IPatClear clr -> IPatClear (List.map map_ssrhyp clr) - | IPatCase iorpat -> IPatCase (List.map (List.map (map_ipat map_id map_ssrhyp map_ast_closure_term)) iorpat) - | IPatDispatch iorpat -> IPatDispatch (List.map (List.map (map_ipat map_id map_ssrhyp map_ast_closure_term)) iorpat) - | IPatInj iorpat -> IPatInj (List.map (List.map (map_ipat map_id map_ssrhyp map_ast_closure_term)) iorpat) - | IPatView (clr,v) -> IPatView (clr,List.map map_ast_closure_term v) - | IPatTac _ -> assert false (*internal usage only *) - -let wit_ssripatrep = add_genarg "ssripatrep" pr_ipat - -let pr_ssripat _ _ _ = pr_ipat -let pr_ssripats _ _ _ = pr_ipats -let pr_ssriorpat _ _ _ = pr_iorpat - -let intern_ipat ist = - map_ipat - (fun id -> id) - (intern_hyp ist) - (glob_ast_closure_term ist) - -let intern_ipats ist = List.map (intern_ipat ist) - -let interp_intro_pattern = interp_wit wit_intro_pattern - -let interp_introid ist gl id = - try IntroNaming (IntroIdentifier (hyp_id (snd (interp_hyp ist gl (SsrHyp (Loc.tag id)))))) - with _ -> (snd (interp_intro_pattern ist gl (CAst.make @@ IntroNaming (IntroIdentifier id)))).CAst.v - -let get_intro_id = function - | IntroNaming (IntroIdentifier id) -> id - | _ -> assert false - -let rec add_intro_pattern_hyps ipat hyps = - let {CAst.loc=loc;v=ipat} = ipat in - match ipat with - | IntroNaming (IntroIdentifier id) -> - if not_section_id id then SsrHyp (loc, id) :: hyps else - hyp_err ?loc "Can't delete section hypothesis " id - | IntroAction IntroWildcard -> hyps - | IntroAction (IntroOrAndPattern (IntroOrPattern iorpat)) -> - List.fold_right (List.fold_right add_intro_pattern_hyps) iorpat hyps - | IntroAction (IntroOrAndPattern (IntroAndPattern iandpat)) -> - List.fold_right add_intro_pattern_hyps iandpat hyps - | IntroNaming IntroAnonymous -> [] - | IntroNaming (IntroFresh _) -> [] - | IntroAction (IntroRewrite _) -> hyps - | IntroAction (IntroInjection ips) -> List.fold_right add_intro_pattern_hyps ips hyps - | IntroAction (IntroApplyOn (c,pat)) -> add_intro_pattern_hyps pat hyps - | IntroForthcoming _ -> - (* As in ipat_of_intro_pattern, was unable to determine which kind - of ipat interp_introid could return [HH] *) assert false - -(* We interp the ipat using the standard ltac machinery for ids, since - * we have no clue what a name could be bound to (maybe another ipat) *) -let interp_ipat ist gl = - let ltacvar id = Id.Map.mem id ist.Tacinterp.lfun in - let rec interp = function - | IPatId id when ltacvar id -> - ipat_of_intro_pattern (interp_introid ist gl id) - | IPatId _ as x -> x - | IPatClear clr -> - let add_hyps (SsrHyp (loc, id) as hyp) hyps = - if not (ltacvar id) then hyp :: hyps else - add_intro_pattern_hyps CAst.(make ?loc (interp_introid ist gl id)) hyps in - let clr' = List.fold_right add_hyps clr [] in - check_hyps_uniq [] clr'; IPatClear clr' - | IPatCase(iorpat) -> - IPatCase(List.map (List.map interp) iorpat) - | IPatDispatch(iorpat) -> - IPatDispatch(List.map (List.map interp) iorpat) - | IPatInj iorpat -> IPatInj (List.map (List.map interp) iorpat) - | IPatAbstractVars l -> - IPatAbstractVars (List.map get_intro_id (List.map (interp_introid ist gl) l)) - | IPatView (clr,l) -> IPatView (clr,List.map (fun x -> snd(interp_ast_closure_term ist - gl x)) l) - | (IPatSimpl _ | IPatAnon _ | IPatRewrite _ | IPatNoop) as x -> x - | IPatTac _ -> assert false (*internal usage only *) - in - interp - -let interp_ipats ist gl l = project gl, List.map (interp_ipat ist gl) l - -let pushIPatRewrite = function - | pats :: orpat -> (IPatRewrite (allocc, L2R) :: pats) :: orpat - | [] -> [] - -let pushIPatNoop = function - | pats :: orpat -> (IPatNoop :: pats) :: orpat - | [] -> [] - -ARGUMENT EXTEND ssripat TYPED AS ssripatrep list PRINTED BY pr_ssripats - INTERPRETED BY interp_ipats - GLOBALIZED BY intern_ipats - | [ "_" ] -> [ [IPatAnon Drop] ] - | [ "*" ] -> [ [IPatAnon All] ] - (* - | [ "^" "*" ] -> [ [IPatFastMode] ] - | [ "^" "_" ] -> [ [IPatSeed `Wild] ] - | [ "^_" ] -> [ [IPatSeed `Wild] ] - | [ "^" "?" ] -> [ [IPatSeed `Anon] ] - | [ "^?" ] -> [ [IPatSeed `Anon] ] - | [ "^" ident(id) ] -> [ [IPatSeed (`Id(id,`Pre))] ] - | [ "^" "~" ident(id) ] -> [ [IPatSeed (`Id(id,`Post))] ] - | [ "^~" ident(id) ] -> [ [IPatSeed (`Id(id,`Post))] ] - *) - | [ ident(id) ] -> [ [IPatId id] ] - | [ "?" ] -> [ [IPatAnon One] ] -(* TODO | [ "+" ] -> [ [IPatAnon Temporary] ] *) - | [ ssrsimpl_ne(sim) ] -> [ [IPatSimpl sim] ] - | [ ssrdocc(occ) "->" ] -> [ match occ with - | Some [], _ -> CErrors.user_err ~loc (str"occ_switch expected") - | None, occ -> [IPatRewrite (occ, L2R)] - | Some clr, _ -> [IPatClear clr; IPatRewrite (allocc, L2R)]] - | [ ssrdocc(occ) "<-" ] -> [ match occ with - | Some [], _ -> CErrors.user_err ~loc (str"occ_switch expected") - | None, occ -> [IPatRewrite (occ, R2L)] - | Some clr, _ -> [IPatClear clr; IPatRewrite (allocc, R2L)]] - | [ ssrdocc(occ) ssrfwdview(v) ] -> [ match occ with - | Some [], _ -> [IPatView (true,v)] - | Some cl, _ -> check_hyps_uniq [] cl; [IPatClear cl;IPatView (false,v)] - | _ -> CErrors.user_err ~loc (str"Only identifiers are allowed here") ] - | [ ssrdocc(occ) ] -> [ match occ with - | Some cl, _ -> check_hyps_uniq [] cl; [IPatClear cl] - | _ -> CErrors.user_err ~loc (str"Only identifiers are allowed here")] - | [ "->" ] -> [ [IPatRewrite (allocc, L2R)] ] - | [ "<-" ] -> [ [IPatRewrite (allocc, R2L)] ] - | [ "-" ] -> [ [IPatNoop] ] - | [ "-/" "=" ] -> [ [IPatNoop;IPatSimpl(Simpl ~-1)] ] - | [ "-/=" ] -> [ [IPatNoop;IPatSimpl(Simpl ~-1)] ] - | [ "-/" "/" ] -> [ [IPatNoop;IPatSimpl(Cut ~-1)] ] - | [ "-//" ] -> [ [IPatNoop;IPatSimpl(Cut ~-1)] ] - | [ "-/" integer(n) "/" ] -> [ [IPatNoop;IPatSimpl(Cut n)] ] - | [ "-/" "/=" ] -> [ [IPatNoop;IPatSimpl(SimplCut (~-1,~-1))] ] - | [ "-//" "=" ] -> [ [IPatNoop;IPatSimpl(SimplCut (~-1,~-1))] ] - | [ "-//=" ] -> [ [IPatNoop;IPatSimpl(SimplCut (~-1,~-1))] ] - | [ "-/" integer(n) "/=" ] -> [ [IPatNoop;IPatSimpl(SimplCut (n,~-1))] ] - | [ "-/" integer(n) "/" integer (m) "=" ] -> - [ [IPatNoop;IPatSimpl(SimplCut(n,m))] ] - | [ ssrfwdview(v) ] -> [ [IPatView (false,v)] ] - | [ "[" ":" ident_list(idl) "]" ] -> [ [IPatAbstractVars idl] ] - | [ "[:" ident_list(idl) "]" ] -> [ [IPatAbstractVars idl] ] -END - -ARGUMENT EXTEND ssripats TYPED AS ssripat PRINTED BY pr_ssripats - | [ ssripat(i) ssripats(tl) ] -> [ i @ tl ] - | [ ] -> [ [] ] -END - -ARGUMENT EXTEND ssriorpat TYPED AS ssripat list PRINTED BY pr_ssriorpat -| [ ssripats(pats) "|" ssriorpat(orpat) ] -> [ pats :: orpat ] -| [ ssripats(pats) "|-" ">" ssriorpat(orpat) ] -> [ pats :: pushIPatRewrite orpat ] -| [ ssripats(pats) "|-" ssriorpat(orpat) ] -> [ pats :: pushIPatNoop orpat ] -| [ ssripats(pats) "|->" ssriorpat(orpat) ] -> [ pats :: pushIPatRewrite orpat ] -| [ ssripats(pats) "||" ssriorpat(orpat) ] -> [ pats :: [] :: orpat ] -| [ ssripats(pats) "|||" ssriorpat(orpat) ] -> [ pats :: [] :: [] :: orpat ] -| [ ssripats(pats) "||||" ssriorpat(orpat) ] -> [ [pats; []; []; []] @ orpat ] -| [ ssripats(pats) ] -> [ [pats] ] -END - -let reject_ssrhid strm = - match Util.stream_nth 0 strm with - | Tok.KEYWORD "[" -> - (match Util.stream_nth 1 strm with - | Tok.KEYWORD ":" -> raise Stream.Failure - | _ -> ()) - | _ -> () - -let test_nohidden = Pcoq.Gram.Entry.of_parser "test_ssrhid" reject_ssrhid - -ARGUMENT EXTEND ssrcpat TYPED AS ssripatrep PRINTED BY pr_ssripat - | [ "YouShouldNotTypeThis" ssriorpat(x) ] -> [ IPatCase(x) ] -END - -Pcoq.( -GEXTEND Gram - GLOBAL: ssrcpat; - ssrcpat: [ - [ test_nohidden; "["; iorpat = ssriorpat; "]" -> -(* check_no_inner_seed !@loc false iorpat; - IPatCase (understand_case_type iorpat) *) - IPatCase iorpat -(* - | test_nohidden; "("; iorpat = ssriorpat; ")" -> -(* check_no_inner_seed !@loc false iorpat; - IPatCase (understand_case_type iorpat) *) - IPatDispatch iorpat -*) - | test_nohidden; "[="; iorpat = ssriorpat; "]" -> -(* check_no_inner_seed !@loc false iorpat; *) - IPatInj iorpat ]]; -END -);; - -Pcoq.( -GEXTEND Gram - GLOBAL: ssripat; - ssripat: [[ pat = ssrcpat -> [pat] ]]; -END -) - -ARGUMENT EXTEND ssripats_ne TYPED AS ssripat PRINTED BY pr_ssripats - | [ ssripat(i) ssripats(tl) ] -> [ i @ tl ] - END - -(* subsets of patterns *) - -(* TODO: review what this function does, it looks suspicious *) -let check_ssrhpats loc w_binders ipats = - let err_loc s = CErrors.user_err ~loc ~hdr:"ssreflect" s in - let clr, ipats = - let rec aux clr = function - | IPatClear cl :: tl -> aux (clr @ cl) tl -(* | IPatSimpl (cl, sim) :: tl -> clr @ cl, IPatSimpl ([], sim) :: tl *) - | tl -> clr, tl - in aux [] ipats in - let simpl, ipats = - match List.rev ipats with - | IPatSimpl _ as s :: tl -> [s], List.rev tl - | _ -> [], ipats in - if simpl <> [] && not w_binders then - err_loc (str "No s-item allowed here: " ++ pr_ipats simpl); - let ipat, binders = - let rec loop ipat = function - | [] -> ipat, [] - | ( IPatId _| IPatAnon _| IPatCase _ | IPatDispatch _ | IPatRewrite _ as i) :: tl -> - if w_binders then - if simpl <> [] && tl <> [] then - err_loc(str"binders XOR s-item allowed here: "++pr_ipats(tl@simpl)) - else if not (List.for_all (function IPatId _ -> true | _ -> false) tl) - then err_loc (str "Only binders allowed here: " ++ pr_ipats tl) - else ipat @ [i], tl - else - if tl = [] then ipat @ [i], [] - else err_loc (str "No binder or s-item allowed here: " ++ pr_ipats tl) - | hd :: tl -> loop (ipat @ [hd]) tl - in loop [] ipats in - ((clr, ipat), binders), simpl - -let pr_hpats (((clr, ipat), binders), simpl) = - pr_clear mt clr ++ pr_ipats ipat ++ pr_ipats binders ++ pr_ipats simpl -let pr_ssrhpats _ _ _ = pr_hpats -let pr_ssrhpats_wtransp _ _ _ (_, x) = pr_hpats x - -ARGUMENT EXTEND ssrhpats TYPED AS ((ssrclear * ssripat) * ssripat) * ssripat -PRINTED BY pr_ssrhpats - | [ ssripats(i) ] -> [ check_ssrhpats loc true i ] -END - -ARGUMENT EXTEND ssrhpats_wtransp - TYPED AS bool * (((ssrclear * ssripats) * ssripats) * ssripats) - PRINTED BY pr_ssrhpats_wtransp - | [ ssripats(i) ] -> [ false,check_ssrhpats loc true i ] - | [ ssripats(i) "@" ssripats(j) ] -> [ true,check_ssrhpats loc true (i @ j) ] -END - -ARGUMENT EXTEND ssrhpats_nobs -TYPED AS ((ssrclear * ssripats) * ssripats) * ssripats PRINTED BY pr_ssrhpats - | [ ssripats(i) ] -> [ check_ssrhpats loc false i ] -END - -ARGUMENT EXTEND ssrrpat TYPED AS ssripatrep PRINTED BY pr_ssripat - | [ "->" ] -> [ IPatRewrite (allocc, L2R) ] - | [ "<-" ] -> [ IPatRewrite (allocc, R2L) ] -END - -let pr_intros sep intrs = - if intrs = [] then mt() else sep () ++ str "=>" ++ pr_ipats intrs -let pr_ssrintros _ _ _ = pr_intros mt - -ARGUMENT EXTEND ssrintros_ne TYPED AS ssripat - PRINTED BY pr_ssrintros - | [ "=>" ssripats_ne(pats) ] -> [ pats ] -(* TODO | [ "=>" ">" ssripats_ne(pats) ] -> [ IPatFastMode :: pats ] - | [ "=>>" ssripats_ne(pats) ] -> [ IPatFastMode :: pats ] *) -END - -ARGUMENT EXTEND ssrintros TYPED AS ssrintros_ne PRINTED BY pr_ssrintros - | [ ssrintros_ne(intrs) ] -> [ intrs ] - | [ ] -> [ [] ] -END - -let pr_ssrintrosarg _ _ prt (tac, ipats) = - prt tacltop tac ++ pr_intros spc ipats - -ARGUMENT EXTEND ssrintrosarg TYPED AS tactic * ssrintros - PRINTED BY pr_ssrintrosarg -| [ "YouShouldNotTypeThis" ssrtacarg(arg) ssrintros_ne(ipats) ] -> [ arg, ipats ] -END - -TACTIC EXTEND ssrtclintros -| [ "YouShouldNotTypeThis" ssrintrosarg(arg) ] -> - [ let tac, intros = arg in - ssrevaltac ist tac <*> tclIPATssr intros ] -END - -(** Defined identifier *) -let pr_ssrfwdid id = pr_spc () ++ pr_id id - -let pr_ssrfwdidx _ _ _ = pr_ssrfwdid - -(* We use a primitive parser for the head identifier of forward *) -(* tactis to avoid syntactic conflicts with basic Coq tactics. *) -ARGUMENT EXTEND ssrfwdid TYPED AS ident PRINTED BY pr_ssrfwdidx - | [ "YouShouldNotTypeThis" ] -> [ anomaly "Grammar placeholder match" ] -END - -let accept_ssrfwdid strm = - match stream_nth 0 strm with - | Tok.IDENT id -> accept_before_syms_or_any_id [":"; ":="; "("] strm - | _ -> raise Stream.Failure - - -let test_ssrfwdid = Gram.Entry.of_parser "test_ssrfwdid" accept_ssrfwdid - -GEXTEND Gram - GLOBAL: ssrfwdid; - ssrfwdid: [[ test_ssrfwdid; id = Prim.ident -> id ]]; - END - - -(* by *) -(** Tactical arguments. *) - -(* We have four kinds: simple tactics, [|]-bracketed lists, hints, and swaps *) -(* The latter two are used in forward-chaining tactics (have, suffice, wlog) *) -(* and subgoal reordering tacticals (; first & ; last), respectively. *) - - -let pr_ortacs prt = - let rec pr_rec = function - | [None] -> spc() ++ str "|" ++ spc() - | None :: tacs -> spc() ++ str "|" ++ pr_rec tacs - | Some tac :: tacs -> spc() ++ str "| " ++ prt tacltop tac ++ pr_rec tacs - | [] -> mt() in - function - | [None] -> spc() - | None :: tacs -> pr_rec tacs - | Some tac :: tacs -> prt tacltop tac ++ pr_rec tacs - | [] -> mt() -let pr_ssrortacs _ _ = pr_ortacs - -ARGUMENT EXTEND ssrortacs TYPED AS tactic option list PRINTED BY pr_ssrortacs -| [ ssrtacarg(tac) "|" ssrortacs(tacs) ] -> [ Some tac :: tacs ] -| [ ssrtacarg(tac) "|" ] -> [ [Some tac; None] ] -| [ ssrtacarg(tac) ] -> [ [Some tac] ] -| [ "|" ssrortacs(tacs) ] -> [ None :: tacs ] -| [ "|" ] -> [ [None; None] ] -END - -let pr_hintarg prt = function - | true, tacs -> hv 0 (str "[ " ++ pr_ortacs prt tacs ++ str " ]") - | false, [Some tac] -> prt tacltop tac - | _, _ -> mt() - -let pr_ssrhintarg _ _ = pr_hintarg - - -ARGUMENT EXTEND ssrhintarg TYPED AS bool * ssrortacs PRINTED BY pr_ssrhintarg -| [ "[" "]" ] -> [ nullhint ] -| [ "[" ssrortacs(tacs) "]" ] -> [ mk_orhint tacs ] -| [ ssrtacarg(arg) ] -> [ mk_hint arg ] -END - -ARGUMENT EXTEND ssrortacarg TYPED AS ssrhintarg PRINTED BY pr_ssrhintarg -| [ "[" ssrortacs(tacs) "]" ] -> [ mk_orhint tacs ] -END - - -let pr_hint prt arg = - if arg = nohint then mt() else str "by " ++ pr_hintarg prt arg -let pr_ssrhint _ _ = pr_hint - -ARGUMENT EXTEND ssrhint TYPED AS ssrhintarg PRINTED BY pr_ssrhint -| [ ] -> [ nohint ] -END -(** The "in" pseudo-tactical *)(* {{{ **********************************************) - -(* We can't make "in" into a general tactical because this would create a *) -(* crippling conflict with the ltac let .. in construct. Hence, we add *) -(* explicitly an "in" suffix to all the extended tactics for which it is *) -(* relevant (including move, case, elim) and to the extended do tactical *) -(* below, which yields a general-purpose "in" of the form do [...] in ... *) - -(* This tactical needs to come before the intro tactics because the latter *) -(* must take precautions in order not to interfere with the discharged *) -(* assumptions. This is especially difficult for discharged "let"s, which *) -(* the default simpl and unfold tactics would erase blindly. *) - -open Ssrmatching_plugin.Ssrmatching -open Ssrmatching_plugin.G_ssrmatching - -let pr_wgen = function - | (clr, Some((id,k),None)) -> spc() ++ pr_clear mt clr ++ str k ++ pr_hoi id - | (clr, Some((id,k),Some p)) -> - spc() ++ pr_clear mt clr ++ str"(" ++ str k ++ pr_hoi id ++ str ":=" ++ - pr_cpattern p ++ str ")" - | (clr, None) -> spc () ++ pr_clear mt clr -let pr_ssrwgen _ _ _ = pr_wgen - -(* no globwith for char *) -ARGUMENT EXTEND ssrwgen - TYPED AS ssrclear * ((ssrhoi_hyp * string) * cpattern option) option - PRINTED BY pr_ssrwgen -| [ ssrclear_ne(clr) ] -> [ clr, None ] -| [ ssrhoi_hyp(hyp) ] -> [ [], Some((hyp, " "), None) ] -| [ "@" ssrhoi_hyp(hyp) ] -> [ [], Some((hyp, "@"), None) ] -| [ "(" ssrhoi_id(id) ":=" lcpattern(p) ")" ] -> - [ [], Some ((id," "),Some p) ] -| [ "(" ssrhoi_id(id) ")" ] -> [ [], Some ((id,"("), None) ] -| [ "(@" ssrhoi_id(id) ":=" lcpattern(p) ")" ] -> - [ [], Some ((id,"@"),Some p) ] -| [ "(" "@" ssrhoi_id(id) ":=" lcpattern(p) ")" ] -> - [ [], Some ((id,"@"),Some p) ] -END - -let pr_clseq = function - | InGoal | InHyps -> mt () - | InSeqGoal -> str "|- *" - | InHypsSeqGoal -> str " |- *" - | InHypsGoal -> str " *" - | InAll -> str "*" - | InHypsSeq -> str " |-" - | InAllHyps -> str "* |-" - -let wit_ssrclseq = add_genarg "ssrclseq" pr_clseq -let pr_clausehyps = pr_list pr_spc pr_wgen -let pr_ssrclausehyps _ _ _ = pr_clausehyps - -ARGUMENT EXTEND ssrclausehyps -TYPED AS ssrwgen list PRINTED BY pr_ssrclausehyps -| [ ssrwgen(hyp) "," ssrclausehyps(hyps) ] -> [ hyp :: hyps ] -| [ ssrwgen(hyp) ssrclausehyps(hyps) ] -> [ hyp :: hyps ] -| [ ssrwgen(hyp) ] -> [ [hyp] ] -END - -(* type ssrclauses = ssrahyps * ssrclseq *) - -let pr_clauses (hyps, clseq) = - if clseq = InGoal then mt () - else str "in " ++ pr_clausehyps hyps ++ pr_clseq clseq -let pr_ssrclauses _ _ _ = pr_clauses - -ARGUMENT EXTEND ssrclauses TYPED AS ssrwgen list * ssrclseq - PRINTED BY pr_ssrclauses - | [ "in" ssrclausehyps(hyps) "|-" "*" ] -> [ hyps, InHypsSeqGoal ] - | [ "in" ssrclausehyps(hyps) "|-" ] -> [ hyps, InHypsSeq ] - | [ "in" ssrclausehyps(hyps) "*" ] -> [ hyps, InHypsGoal ] - | [ "in" ssrclausehyps(hyps) ] -> [ hyps, InHyps ] - | [ "in" "|-" "*" ] -> [ [], InSeqGoal ] - | [ "in" "*" ] -> [ [], InAll ] - | [ "in" "*" "|-" ] -> [ [], InAllHyps ] - | [ ] -> [ [], InGoal ] -END - - - - -(** Definition value formatting *) - -(* We use an intermediate structure to correctly render the binder list *) -(* abbreviations. We use a list of hints to extract the binders and *) -(* base term from a term, for the two first levels of representation of *) -(* of constr terms. *) - -let pr_binder prl = function - | Bvar x -> - pr_name x - | Bdecl (xs, t) -> - str "(" ++ pr_list pr_spc pr_name xs ++ str " : " ++ prl t ++ str ")" - | Bdef (x, None, v) -> - str "(" ++ pr_name x ++ str " := " ++ prl v ++ str ")" - | Bdef (x, Some t, v) -> - str "(" ++ pr_name x ++ str " : " ++ prl t ++ - str " := " ++ prl v ++ str ")" - | Bstruct x -> - str "{struct " ++ pr_name x ++ str "}" - | Bcast t -> - str ": " ++ prl t - -let rec format_local_binders h0 bl0 = match h0, bl0 with - | BFvar :: h, CLocalAssum ([{CAst.v=x}], _, _) :: bl -> - Bvar x :: format_local_binders h bl - | BFdecl _ :: h, CLocalAssum (lxs, _, t) :: bl -> - Bdecl (List.map (fun x -> x.CAst.v) lxs, t) :: format_local_binders h bl - | BFdef :: h, CLocalDef ({CAst.v=x}, v, oty) :: bl -> - Bdef (x, oty, v) :: format_local_binders h bl - | _ -> [] - -let rec format_constr_expr h0 c0 = let open CAst in match h0, c0 with - | BFvar :: h, { v = CLambdaN ([CLocalAssum([{CAst.v=x}], _, _)], c) } -> - let bs, c' = format_constr_expr h c in - Bvar x :: bs, c' - | BFdecl _:: h, { v = CLambdaN ([CLocalAssum(lxs, _, t)], c) } -> - let bs, c' = format_constr_expr h c in - Bdecl (List.map (fun x -> x.CAst.v) lxs, t) :: bs, c' - | BFdef :: h, { v = CLetIn({CAst.v=x}, v, oty, c) } -> - let bs, c' = format_constr_expr h c in - Bdef (x, oty, v) :: bs, c' - | [BFcast], { v = CCast (c, Glob_term.CastConv t) } -> - [Bcast t], c - | BFrec (has_str, has_cast) :: h, - { v = CFix ( _, [_, (Some locn, CStructRec), bl, t, c]) } -> - let bs = format_local_binders h bl in - let bstr = if has_str then [Bstruct (Name locn.CAst.v)] else [] in - bs @ bstr @ (if has_cast then [Bcast t] else []), c - | BFrec (_, has_cast) :: h, { v = CCoFix ( _, [_, bl, t, c]) } -> - format_local_binders h bl @ (if has_cast then [Bcast t] else []), c - | _, c -> - [], c - -(** Forward chaining argument *) - -(* There are three kinds of forward definitions: *) -(* - Hint: type only, cast to Type, may have proof hint. *) -(* - Have: type option + value, no space before type *) -(* - Pose: binders + value, space before binders. *) - -let pr_fwdkind = function - | FwdHint (s,_) -> str (s ^ " ") | _ -> str " :=" ++ spc () -let pr_fwdfmt (fk, _ : ssrfwdfmt) = pr_fwdkind fk - -let wit_ssrfwdfmt = add_genarg "ssrfwdfmt" pr_fwdfmt - -(* type ssrfwd = ssrfwdfmt * ssrterm *) - -let mkFwdVal fk c = ((fk, []), c) -let mkssrFwdVal fk c = ((fk, []), (c,None)) -let dC t = Glob_term.CastConv t - -let same_ist { interp_env = x } { interp_env = y } = - match x,y with - | None, None -> true - | Some a, Some b -> a == b - | _ -> false - -let mkFwdCast fk ?loc ?c t = - let c = match c with - | None -> mkCHole loc - | Some c -> assert (same_ist t c); c.body in - ((fk, [BFcast]), - { t with annotation = `None; - body = (CAst.make ?loc @@ CCast (c, dC t.body)) }) - -let mkssrFwdCast fk loc t c = ((fk, [BFcast]), (c, Some t)) - -let mkFwdHint s t = - let loc = Constrexpr_ops.constr_loc t.body in - mkFwdCast (FwdHint (s,false)) ?loc t -let mkFwdHintNoTC s t = - let loc = Constrexpr_ops.constr_loc t.body in - mkFwdCast (FwdHint (s,true)) ?loc t - -let pr_gen_fwd prval prc prlc fk (bs, c) = - let prc s = str s ++ spc () ++ prval prc prlc c in - match fk, bs with - | FwdHint (s,_), [Bcast t] -> str s ++ spc () ++ prlc t - | FwdHint (s,_), _ -> prc (s ^ "(* typeof *)") - | FwdHave, [Bcast t] -> str ":" ++ spc () ++ prlc t ++ prc " :=" - | _, [] -> prc " :=" - | _, _ -> spc () ++ pr_list spc (pr_binder prlc) bs ++ prc " :=" - -let pr_fwd_guarded prval prval' = function -| (fk, h), c -> - pr_gen_fwd prval pr_constr_expr prl_constr_expr fk (format_constr_expr h c.body) - -let pr_unguarded prc prlc = prlc - -let pr_fwd = pr_fwd_guarded pr_unguarded pr_unguarded -let pr_ssrfwd _ _ _ = pr_fwd - -ARGUMENT EXTEND ssrfwd TYPED AS (ssrfwdfmt * ast_closure_lterm) PRINTED BY pr_ssrfwd - | [ ":=" ast_closure_lterm(c) ] -> [ mkFwdVal FwdPose c ] - | [ ":" ast_closure_lterm (t) ":=" ast_closure_lterm(c) ] -> [ mkFwdCast FwdPose ~loc t ~c ] -END - -(** Independent parsing for binders *) - -(* The pose, pose fix, and pose cofix tactics use these internally to *) -(* parse argument fragments. *) - -let pr_ssrbvar prc _ _ v = prc v - -ARGUMENT EXTEND ssrbvar TYPED AS constr PRINTED BY pr_ssrbvar -| [ ident(id) ] -> [ mkCVar ~loc id ] -| [ "_" ] -> [ mkCHole (Some loc) ] -END - -let bvar_lname = let open CAst in function - | { v = CRef (qid, _) } when qualid_is_ident qid -> - CAst.make ?loc:qid.CAst.loc @@ Name (qualid_basename qid) - | { loc = loc } -> CAst.make ?loc Anonymous - -let pr_ssrbinder prc _ _ (_, c) = prc c - -ARGUMENT EXTEND ssrbinder TYPED AS ssrfwdfmt * constr PRINTED BY pr_ssrbinder - | [ ssrbvar(bv) ] -> - [ let { CAst.loc=xloc } as x = bvar_lname bv in - (FwdPose, [BFvar]), - CAst.make ~loc @@ CLambdaN ([CLocalAssum([x],Default Explicit,mkCHole xloc)],mkCHole (Some loc)) ] - | [ "(" ssrbvar(bv) ")" ] -> - [ let { CAst.loc=xloc } as x = bvar_lname bv in - (FwdPose, [BFvar]), - CAst.make ~loc @@ CLambdaN ([CLocalAssum([x],Default Explicit,mkCHole xloc)],mkCHole (Some loc)) ] - | [ "(" ssrbvar(bv) ":" lconstr(t) ")" ] -> - [ let x = bvar_lname bv in - (FwdPose, [BFdecl 1]), - CAst.make ~loc @@ CLambdaN ([CLocalAssum([x], Default Explicit, t)], mkCHole (Some loc)) ] - | [ "(" ssrbvar(bv) ne_ssrbvar_list(bvs) ":" lconstr(t) ")" ] -> - [ let xs = List.map bvar_lname (bv :: bvs) in - let n = List.length xs in - (FwdPose, [BFdecl n]), - CAst.make ~loc @@ CLambdaN ([CLocalAssum (xs, Default Explicit, t)], mkCHole (Some loc)) ] - | [ "(" ssrbvar(id) ":" lconstr(t) ":=" lconstr(v) ")" ] -> - [ (FwdPose,[BFdef]), CAst.make ~loc @@ CLetIn (bvar_lname id, v, Some t, mkCHole (Some loc)) ] - | [ "(" ssrbvar(id) ":=" lconstr(v) ")" ] -> - [ (FwdPose,[BFdef]), CAst.make ~loc @@ CLetIn (bvar_lname id, v, None, mkCHole (Some loc)) ] - END - -GEXTEND Gram - GLOBAL: ssrbinder; - ssrbinder: [ - [ ["of" | "&"]; c = operconstr LEVEL "99" -> - let loc = !@loc in - (FwdPose, [BFvar]), - CAst.make ~loc @@ CLambdaN ([CLocalAssum ([CAst.make ~loc Anonymous],Default Explicit,c)],mkCHole (Some loc)) ] - ]; -END - -let rec binders_fmts = function - | ((_, h), _) :: bs -> h @ binders_fmts bs - | _ -> [] - -let push_binders c2 bs = - let loc2 = constr_loc c2 in let mkloc loc1 = Loc.merge_opt loc1 loc2 in - let open CAst in - let rec loop ty c = function - | (_, { loc = loc1; v = CLambdaN (b, _) } ) :: bs when ty -> - CAst.make ?loc:(mkloc loc1) @@ CProdN (b, loop ty c bs) - | (_, { loc = loc1; v = CLambdaN (b, _) } ) :: bs -> - CAst.make ?loc:(mkloc loc1) @@ CLambdaN (b, loop ty c bs) - | (_, { loc = loc1; v = CLetIn (x, v, oty, _) } ) :: bs -> - CAst.make ?loc:(mkloc loc1) @@ CLetIn (x, v, oty, loop ty c bs) - | [] -> c - | _ -> anomaly "binder not a lambda nor a let in" in - match c2 with - | { loc; v = CCast (ct, Glob_term.CastConv cty) } -> - CAst.make ?loc @@ (CCast (loop false ct bs, Glob_term.CastConv (loop true cty bs))) - | ct -> loop false ct bs - -let rec fix_binders = let open CAst in function - | (_, { v = CLambdaN ([CLocalAssum(xs, _, t)], _) } ) :: bs -> - CLocalAssum (xs, Default Explicit, t) :: fix_binders bs - | (_, { v = CLetIn (x, v, oty, _) } ) :: bs -> - CLocalDef (x, v, oty) :: fix_binders bs - | _ -> [] - -let pr_ssrstruct _ _ _ = function - | Some id -> str "{struct " ++ pr_id id ++ str "}" - | None -> mt () - -ARGUMENT EXTEND ssrstruct TYPED AS ident option PRINTED BY pr_ssrstruct -| [ "{" "struct" ident(id) "}" ] -> [ Some id ] -| [ ] -> [ None ] -END - -(** The "pose" tactic *) - -(* The plain pose form. *) - -let bind_fwd bs ((fk, h), c) = - (fk,binders_fmts bs @ h), { c with body = push_binders c.body bs } - -ARGUMENT EXTEND ssrposefwd TYPED AS ssrfwd PRINTED BY pr_ssrfwd - | [ ssrbinder_list(bs) ssrfwd(fwd) ] -> [ bind_fwd bs fwd ] -END - -(* The pose fix form. *) - -let pr_ssrfixfwd _ _ _ (id, fwd) = str " fix " ++ pr_id id ++ pr_fwd fwd - -let bvar_locid = function - | { CAst.v = CRef (qid, _) } when qualid_is_ident qid -> - CAst.make ?loc:qid.CAst.loc (qualid_basename qid) - | _ -> CErrors.user_err (Pp.str "Missing identifier after \"(co)fix\"") - - -ARGUMENT EXTEND ssrfixfwd TYPED AS ident * ssrfwd PRINTED BY pr_ssrfixfwd - | [ "fix" ssrbvar(bv) ssrbinder_list(bs) ssrstruct(sid) ssrfwd(fwd) ] -> - [ let { CAst.v=id } as lid = bvar_locid bv in - let (fk, h), ac = fwd in - let c = ac.body in - let has_cast, t', c' = match format_constr_expr h c with - | [Bcast t'], c' -> true, t', c' - | _ -> false, mkCHole (constr_loc c), c in - let lb = fix_binders bs in - let has_struct, i = - let rec loop = function - | {CAst.loc=l'; v=Name id'} :: _ when Option.equal Id.equal sid (Some id') -> - true, CAst.make ?loc:l' id' - | [{CAst.loc=l';v=Name id'}] when sid = None -> - false, CAst.make ?loc:l' id' - | _ :: bn -> loop bn - | [] -> CErrors.user_err (Pp.str "Bad structural argument") in - loop (names_of_local_assums lb) in - let h' = BFrec (has_struct, has_cast) :: binders_fmts bs in - let fix = CAst.make ~loc @@ CFix (lid, [lid, (Some i, CStructRec), lb, t', c']) in - id, ((fk, h'), { ac with body = fix }) ] -END - - -(* The pose cofix form. *) - -let pr_ssrcofixfwd _ _ _ (id, fwd) = str " cofix " ++ pr_id id ++ pr_fwd fwd - -ARGUMENT EXTEND ssrcofixfwd TYPED AS ssrfixfwd PRINTED BY pr_ssrcofixfwd - | [ "cofix" ssrbvar(bv) ssrbinder_list(bs) ssrfwd(fwd) ] -> - [ let { CAst.v=id } as lid = bvar_locid bv in - let (fk, h), ac = fwd in - let c = ac.body in - let has_cast, t', c' = match format_constr_expr h c with - | [Bcast t'], c' -> true, t', c' - | _ -> false, mkCHole (constr_loc c), c in - let h' = BFrec (false, has_cast) :: binders_fmts bs in - let cofix = CAst.make ~loc @@ CCoFix (lid, [lid, fix_binders bs, t', c']) in - id, ((fk, h'), { ac with body = cofix }) - ] -END - -(* This does not print the type, it should be fixed... *) -let pr_ssrsetfwd _ _ _ (((fk,_),(t,_)), docc) = - pr_gen_fwd (fun _ _ -> pr_cpattern) - (fun _ -> mt()) (fun _ -> mt()) fk ([Bcast ()],t) - -ARGUMENT EXTEND ssrsetfwd -TYPED AS (ssrfwdfmt * (lcpattern * ast_closure_lterm option)) * ssrdocc -PRINTED BY pr_ssrsetfwd -| [ ":" ast_closure_lterm(t) ":=" "{" ssrocc(occ) "}" cpattern(c) ] -> - [ mkssrFwdCast FwdPose loc t c, mkocc occ ] -| [ ":" ast_closure_lterm(t) ":=" lcpattern(c) ] -> - [ mkssrFwdCast FwdPose loc t c, nodocc ] -| [ ":=" "{" ssrocc(occ) "}" cpattern(c) ] -> - [ mkssrFwdVal FwdPose c, mkocc occ ] -| [ ":=" lcpattern(c) ] -> [ mkssrFwdVal FwdPose c, nodocc ] -END - - -let pr_ssrhavefwd _ _ prt (fwd, hint) = pr_fwd fwd ++ pr_hint prt hint - -ARGUMENT EXTEND ssrhavefwd TYPED AS ssrfwd * ssrhint PRINTED BY pr_ssrhavefwd -| [ ":" ast_closure_lterm(t) ssrhint(hint) ] -> [ mkFwdHint ":" t, hint ] -| [ ":" ast_closure_lterm(t) ":=" ast_closure_lterm(c) ] -> [ mkFwdCast FwdHave ~loc t ~c, nohint ] -| [ ":" ast_closure_lterm(t) ":=" ] -> [ mkFwdHintNoTC ":" t, nohint ] -| [ ":=" ast_closure_lterm(c) ] -> [ mkFwdVal FwdHave c, nohint ] -END - -let intro_id_to_binder = List.map (function - | IPatId id -> - let { CAst.loc=xloc } as x = bvar_lname (mkCVar id) in - (FwdPose, [BFvar]), - CAst.make @@ CLambdaN ([CLocalAssum([x], Default Explicit, mkCHole xloc)], - mkCHole None) - | _ -> anomaly "non-id accepted as binder") - -let binder_to_intro_id = CAst.(List.map (function - | (FwdPose, [BFvar]), { v = CLambdaN ([CLocalAssum(ids,_,_)],_) } - | (FwdPose, [BFdecl _]), { v = CLambdaN ([CLocalAssum(ids,_,_)],_) } -> - List.map (function {v=Name id} -> IPatId id | _ -> IPatAnon One) ids - | (FwdPose, [BFdef]), { v = CLetIn ({v=Name id},_,_,_) } -> [IPatId id] - | (FwdPose, [BFdef]), { v = CLetIn ({v=Anonymous},_,_,_) } -> [IPatAnon One] - | _ -> anomaly "ssrbinder is not a binder")) - -let pr_ssrhavefwdwbinders _ _ prt (tr,((hpats, (fwd, hint)))) = - pr_hpats hpats ++ pr_fwd fwd ++ pr_hint prt hint - -ARGUMENT EXTEND ssrhavefwdwbinders - TYPED AS bool * (ssrhpats * (ssrfwd * ssrhint)) - PRINTED BY pr_ssrhavefwdwbinders -| [ ssrhpats_wtransp(trpats) ssrbinder_list(bs) ssrhavefwd(fwd) ] -> - [ let tr, pats = trpats in - let ((clr, pats), binders), simpl = pats in - let allbs = intro_id_to_binder binders @ bs in - let allbinders = binders @ List.flatten (binder_to_intro_id bs) in - let hint = bind_fwd allbs (fst fwd), snd fwd in - tr, ((((clr, pats), allbinders), simpl), hint) ] -END - - -let pr_ssrdoarg prc _ prt (((n, m), tac), clauses) = - pr_index n ++ pr_mmod m ++ pr_hintarg prt tac ++ pr_clauses clauses - -ARGUMENT EXTEND ssrdoarg - TYPED AS ((ssrindex * ssrmmod) * ssrhintarg) * ssrclauses - PRINTED BY pr_ssrdoarg -| [ "YouShouldNotTypeThis" ] -> [ anomaly "Grammar placeholder match" ] -END - -(* type ssrseqarg = ssrindex * (ssrtacarg * ssrtac option) *) - -let pr_seqtacarg prt = function - | (is_first, []), _ -> str (if is_first then "first" else "last") - | tac, Some dtac -> - hv 0 (pr_hintarg prt tac ++ spc() ++ str "|| " ++ prt tacltop dtac) - | tac, _ -> pr_hintarg prt tac - -let pr_ssrseqarg _ _ prt = function - | ArgArg 0, tac -> pr_seqtacarg prt tac - | i, tac -> pr_index i ++ str " " ++ pr_seqtacarg prt tac - -(* We must parse the index separately to resolve the conflict with *) -(* an unindexed tactic. *) -ARGUMENT EXTEND ssrseqarg TYPED AS ssrindex * (ssrhintarg * tactic option) - PRINTED BY pr_ssrseqarg -| [ "YouShouldNotTypeThis" ] -> [ anomaly "Grammar placeholder match" ] -END - -let sq_brace_tacnames = - ["first"; "solve"; "do"; "rewrite"; "have"; "suffices"; "wlog"] - (* "by" is a keyword *) -let accept_ssrseqvar strm = - match stream_nth 0 strm with - | Tok.IDENT id when not (List.mem id sq_brace_tacnames) -> - accept_before_syms_or_ids ["["] ["first";"last"] strm - | _ -> raise Stream.Failure - -let test_ssrseqvar = Gram.Entry.of_parser "test_ssrseqvar" accept_ssrseqvar - -let swaptacarg (loc, b) = (b, []), Some (TacId []) - -let check_seqtacarg dir arg = match snd arg, dir with - | ((true, []), Some (TacAtom (loc, _))), L2R -> - CErrors.user_err ?loc (str "expected \"last\"") - | ((false, []), Some (TacAtom (loc, _))), R2L -> - CErrors.user_err ?loc (str "expected \"first\"") - | _, _ -> arg - -let ssrorelse = Entry.create "ssrorelse" -GEXTEND Gram - GLOBAL: ssrorelse ssrseqarg; - ssrseqidx: [ - [ test_ssrseqvar; id = Prim.ident -> ArgVar (CAst.make ~loc:!@loc id) - | n = Prim.natural -> ArgArg (check_index ~loc:!@loc n) - ] ]; - ssrswap: [[ IDENT "first" -> !@loc, true | IDENT "last" -> !@loc, false ]]; - ssrorelse: [[ "||"; tac = tactic_expr LEVEL "2" -> tac ]]; - ssrseqarg: [ - [ arg = ssrswap -> noindex, swaptacarg arg - | i = ssrseqidx; tac = ssrortacarg; def = OPT ssrorelse -> i, (tac, def) - | i = ssrseqidx; arg = ssrswap -> i, swaptacarg arg - | tac = tactic_expr LEVEL "3" -> noindex, (mk_hint tac, None) - ] ]; -END - -let tactic_expr = Pltac.tactic_expr - -(** 1. Utilities *) - -(** Tactic-level diagnosis *) - -(* debug *) - -(* Let's play with the new proof engine API *) -let old_tac = V82.tactic - - -(** Name generation *)(* {{{ *******************************************************) - -(* Since Coq now does repeated internal checks of its external lexical *) -(* rules, we now need to carve ssreflect reserved identifiers out of *) -(* out of the user namespace. We use identifiers of the form _id_ for *) -(* this purpose, e.g., we "anonymize" an identifier id as _id_, adding *) -(* an extra leading _ if this might clash with an internal identifier. *) -(* We check for ssreflect identifiers in the ident grammar rule; *) -(* when the ssreflect Module is present this is normally an error, *) -(* but we provide a compatibility flag to reduce this to a warning. *) - -let ssr_reserved_ids = Summary.ref ~name:"SSR:idents" true - -let _ = - Goptions.declare_bool_option - { Goptions.optname = "ssreflect identifiers"; - Goptions.optkey = ["SsrIdents"]; - Goptions.optdepr = false; - Goptions.optread = (fun _ -> !ssr_reserved_ids); - Goptions.optwrite = (fun b -> ssr_reserved_ids := b) - } - -let is_ssr_reserved s = - let n = String.length s in n > 2 && s.[0] = '_' && s.[n - 1] = '_' - -let ssr_id_of_string loc s = - if is_ssr_reserved s && is_ssr_loaded () then begin - if !ssr_reserved_ids then - CErrors.user_err ~loc (str ("The identifier " ^ s ^ " is reserved.")) - else if is_internal_name s then - Feedback.msg_warning (str ("Conflict between " ^ s ^ " and ssreflect internal names.")) - else Feedback.msg_warning (str ( - "The name " ^ s ^ " fits the _xxx_ format used for anonymous variables.\n" - ^ "Scripts with explicit references to anonymous variables are fragile.")) - end; Id.of_string s - -let ssr_null_entry = Gram.Entry.of_parser "ssr_null" (fun _ -> ()) - -let (!@) = Pcoq.to_coqloc - -GEXTEND Gram - GLOBAL: Prim.ident; - Prim.ident: [[ s = IDENT; ssr_null_entry -> ssr_id_of_string !@loc s ]]; -END - -let perm_tag = "_perm_Hyp_" -let _ = add_internal_name (is_tagged perm_tag) - -(* }}} *) - -(* We must not anonymize context names discharged by the "in" tactical. *) - -(** Tactical extensions. *)(* {{{ **************************************************) - -(* The TACTIC EXTEND facility can't be used for defining new user *) -(* tacticals, because: *) -(* - the concrete syntax must start with a fixed string *) -(* We use the following workaround: *) -(* - We use the (unparsable) "YouShouldNotTypeThis" token for tacticals that *) -(* don't start with a token, then redefine the grammar and *) -(* printer using GEXTEND and set_pr_ssrtac, respectively. *) - -type ssrargfmt = ArgSsr of string | ArgSep of string - -let ssrtac_name name = { - mltac_plugin = "ssreflect_plugin"; - mltac_tactic = "ssr" ^ name; -} - -let ssrtac_entry name n = { - mltac_name = ssrtac_name name; - mltac_index = n; -} - -let set_pr_ssrtac name prec afmt = (* FIXME *) () (* - let fmt = List.map (function - | ArgSep s -> Egramml.GramTerminal s - | ArgSsr s -> Egramml.GramTerminal s - | ArgCoq at -> Egramml.GramTerminal "COQ_ARG") afmt in - let tacname = ssrtac_name name in () *) - -let ssrtac_atom ?loc name args = TacML (Loc.tag ?loc (ssrtac_entry name 0, args)) -let ssrtac_expr ?loc name args = ssrtac_atom ?loc name args - -let tclintros_expr ?loc tac ipats = - let args = [Tacexpr.TacGeneric (in_gen (rawwit wit_ssrintrosarg) (tac, ipats))] in - ssrtac_expr ?loc "tclintros" args - -GEXTEND Gram - GLOBAL: tactic_expr; - tactic_expr: LEVEL "1" [ RIGHTA - [ tac = tactic_expr; intros = ssrintros_ne -> tclintros_expr ~loc:!@loc tac intros - ] ]; -END - -(* }}} *) - - -(** Bracketing tactical *) - -(* The tactic pretty-printer doesn't know that some extended tactics *) -(* are actually tacticals. To prevent it from improperly removing *) -(* parentheses we override the parsing rule for bracketed tactic *) -(* expressions so that the pretty-print always reflects the input. *) -(* (Removing user-specified parentheses is dubious anyway). *) - -GEXTEND Gram - GLOBAL: tactic_expr; - ssrparentacarg: [[ "("; tac = tactic_expr; ")" -> Loc.tag ~loc:!@loc (Tacexp tac) ]]; - tactic_expr: LEVEL "0" [[ arg = ssrparentacarg -> TacArg arg ]]; -END - -(** The internal "done" and "ssrautoprop" tactics. *) - -(* For additional flexibility, "done" and "ssrautoprop" are *) -(* defined in Ltac. *) -(* Although we provide a default definition in ssreflect, *) -(* we look up the definition dynamically at each call point, *) -(* to allow for user extensions. "ssrautoprop" defaults to *) -(* trivial. *) - -let ssrautoprop gl = - try - let tacname = - try Tacenv.locate_tactic (qualid_of_ident (Id.of_string "ssrautoprop")) - with Not_found -> Tacenv.locate_tactic (ssrqid "ssrautoprop") in - let tacexpr = Loc.tag @@ Tacexpr.Reference (ArgArg (Loc.tag @@ tacname)) in - V82.of_tactic (eval_tactic (Tacexpr.TacArg tacexpr)) gl - with Not_found -> V82.of_tactic (Auto.full_trivial []) gl - -let () = ssrautoprop_tac := ssrautoprop - -let tclBY tac = Tacticals.tclTHEN tac (donetac ~-1) - -(** Tactical arguments. *) - -(* We have four kinds: simple tactics, [|]-bracketed lists, hints, and swaps *) -(* The latter two are used in forward-chaining tactics (have, suffice, wlog) *) -(* and subgoal reordering tacticals (; first & ; last), respectively. *) - -(* Force use of the tactic_expr parsing entry, to rule out tick marks. *) - -(** The "by" tactical. *) - - -open Ssrfwd - -TACTIC EXTEND ssrtclby -| [ "by" ssrhintarg(tac) ] -> [ V82.tactic (hinttac ist true tac) ] -END - -(* }}} *) -(* We can't parse "by" in ARGUMENT EXTEND because it will only be made *) -(* into a keyword in ssreflect.v; so we anticipate this in GEXTEND. *) - -GEXTEND Gram - GLOBAL: ssrhint simple_tactic; - ssrhint: [[ "by"; arg = ssrhintarg -> arg ]]; -END - -(** The "do" tactical. ********************************************************) - -(* -type ssrdoarg = ((ssrindex * ssrmmod) * ssrhint) * ssrclauses -*) -TACTIC EXTEND ssrtcldo -| [ "YouShouldNotTypeThis" "do" ssrdoarg(arg) ] -> [ V82.tactic (ssrdotac ist arg) ] -END -set_pr_ssrtac "tcldo" 3 [ArgSep "do "; ArgSsr "doarg"] - -let ssrdotac_expr ?loc n m tac clauses = - let arg = ((n, m), tac), clauses in - ssrtac_expr ?loc "tcldo" [Tacexpr.TacGeneric (in_gen (rawwit wit_ssrdoarg) arg)] - -GEXTEND Gram - GLOBAL: tactic_expr; - ssrdotac: [ - [ tac = tactic_expr LEVEL "3" -> mk_hint tac - | tacs = ssrortacarg -> tacs - ] ]; - tactic_expr: LEVEL "3" [ RIGHTA - [ IDENT "do"; m = ssrmmod; tac = ssrdotac; clauses = ssrclauses -> - ssrdotac_expr ~loc:!@loc noindex m tac clauses - | IDENT "do"; tac = ssrortacarg; clauses = ssrclauses -> - ssrdotac_expr ~loc:!@loc noindex Once tac clauses - | IDENT "do"; n = int_or_var; m = ssrmmod; - tac = ssrdotac; clauses = ssrclauses -> - ssrdotac_expr ~loc:!@loc (mk_index ~loc:!@loc n) m tac clauses - ] ]; -END -(* }}} *) - - -(* We can't actually parse the direction separately because this *) -(* would introduce conflicts with the basic ltac syntax. *) -let pr_ssrseqdir _ _ _ = function - | L2R -> str ";" ++ spc () ++ str "first " - | R2L -> str ";" ++ spc () ++ str "last " - -ARGUMENT EXTEND ssrseqdir TYPED AS ssrdir PRINTED BY pr_ssrseqdir -| [ "YouShouldNotTypeThis" ] -> [ anomaly "Grammar placeholder match" ] -END - -TACTIC EXTEND ssrtclseq -| [ "YouShouldNotTypeThis" ssrtclarg(tac) ssrseqdir(dir) ssrseqarg(arg) ] -> - [ V82.tactic (tclSEQAT ist tac dir arg) ] -END -set_pr_ssrtac "tclseq" 5 [ArgSsr "tclarg"; ArgSsr "seqdir"; ArgSsr "seqarg"] - -let tclseq_expr ?loc tac dir arg = - let arg1 = in_gen (rawwit wit_ssrtclarg) tac in - let arg2 = in_gen (rawwit wit_ssrseqdir) dir in - let arg3 = in_gen (rawwit wit_ssrseqarg) (check_seqtacarg dir arg) in - ssrtac_expr ?loc "tclseq" (List.map (fun x -> Tacexpr.TacGeneric x) [arg1; arg2; arg3]) - -GEXTEND Gram - GLOBAL: tactic_expr; - ssr_first: [ - [ tac = ssr_first; ipats = ssrintros_ne -> tclintros_expr ~loc:!@loc tac ipats - | "["; tacl = LIST0 tactic_expr SEP "|"; "]" -> TacFirst tacl - ] ]; - ssr_first_else: [ - [ tac1 = ssr_first; tac2 = ssrorelse -> TacOrelse (tac1, tac2) - | tac = ssr_first -> tac ]]; - tactic_expr: LEVEL "4" [ LEFTA - [ tac1 = tactic_expr; ";"; IDENT "first"; tac2 = ssr_first_else -> - TacThen (tac1, tac2) - | tac = tactic_expr; ";"; IDENT "first"; arg = ssrseqarg -> - tclseq_expr ~loc:!@loc tac L2R arg - | tac = tactic_expr; ";"; IDENT "last"; arg = ssrseqarg -> - tclseq_expr ~loc:!@loc tac R2L arg - ] ]; -END -(* }}} *) - -(** 5. Bookkeeping tactics (clear, move, case, elim) *) - -(** Generalization (discharge) item *) - -(* An item is a switch + term pair. *) - -(* type ssrgen = ssrdocc * ssrterm *) - -let pr_gen (docc, dt) = pr_docc docc ++ pr_cpattern dt - -let pr_ssrgen _ _ _ = pr_gen - -ARGUMENT EXTEND ssrgen TYPED AS ssrdocc * cpattern PRINTED BY pr_ssrgen -| [ ssrdocc(docc) cpattern(dt) ] -> [ - match docc with - | Some [], _ -> CErrors.user_err ~loc (str"Clear flag {} not allowed here") - | _ -> docc, dt ] -| [ cpattern(dt) ] -> [ nodocc, dt ] -END - -let has_occ ((_, occ), _) = occ <> None - -(** Generalization (discharge) sequence *) - -(* A discharge sequence is represented as a list of up to two *) -(* lists of d-items, plus an ident list set (the possibly empty *) -(* final clear switch). The main list is empty iff the command *) -(* is defective, and has length two if there is a sequence of *) -(* dependent terms (and in that case it is the first of the two *) -(* lists). Thus, the first of the two lists is never empty. *) - -(* type ssrgens = ssrgen list *) -(* type ssrdgens = ssrgens list * ssrclear *) - -let gens_sep = function [], [] -> mt | _ -> spc - -let pr_dgens pr_gen (gensl, clr) = - let prgens s gens = str s ++ pr_list spc pr_gen gens in - let prdeps deps = prgens ": " deps ++ spc () ++ str "/" in - match gensl with - | [deps; []] -> prdeps deps ++ pr_clear pr_spc clr - | [deps; gens] -> prdeps deps ++ prgens " " gens ++ pr_clear spc clr - | [gens] -> prgens ": " gens ++ pr_clear spc clr - | _ -> pr_clear pr_spc clr - -let pr_ssrdgens _ _ _ = pr_dgens pr_gen - -let cons_gen gen = function - | gens :: gensl, clr -> (gen :: gens) :: gensl, clr - | _ -> anomaly "missing gen list" - -let cons_dep (gensl, clr) = - if List.length gensl = 1 then ([] :: gensl, clr) else - CErrors.user_err (Pp.str "multiple dependents switches '/'") - -ARGUMENT EXTEND ssrdgens_tl TYPED AS ssrgen list list * ssrclear - PRINTED BY pr_ssrdgens -| [ "{" ne_ssrhyp_list(clr) "}" cpattern(dt) ssrdgens_tl(dgens) ] -> - [ cons_gen (mkclr clr, dt) dgens ] -| [ "{" ne_ssrhyp_list(clr) "}" ] -> - [ [[]], clr ] -| [ "{" ssrocc(occ) "}" cpattern(dt) ssrdgens_tl(dgens) ] -> - [ cons_gen (mkocc occ, dt) dgens ] -| [ "/" ssrdgens_tl(dgens) ] -> - [ cons_dep dgens ] -| [ cpattern(dt) ssrdgens_tl(dgens) ] -> - [ cons_gen (nodocc, dt) dgens ] -| [ ] -> - [ [[]], [] ] -END - -ARGUMENT EXTEND ssrdgens TYPED AS ssrdgens_tl PRINTED BY pr_ssrdgens -| [ ":" ssrgen(gen) ssrdgens_tl(dgens) ] -> [ cons_gen gen dgens ] -END - -(** Equations *) - -(* argument *) - -let pr_eqid = function Some pat -> str " " ++ pr_ipat pat | None -> mt () -let pr_ssreqid _ _ _ = pr_eqid - -(* We must use primitive parsing here to avoid conflicts with the *) -(* basic move, case, and elim tactics. *) -ARGUMENT EXTEND ssreqid TYPED AS ssripatrep option PRINTED BY pr_ssreqid -| [ "YouShouldNotTypeThis" ] -> [ anomaly "Grammar placeholder match" ] -END - -let accept_ssreqid strm = - match Util.stream_nth 0 strm with - | Tok.IDENT _ -> accept_before_syms [":"] strm - | Tok.KEYWORD ":" -> () - | Tok.KEYWORD pat when List.mem pat ["_"; "?"; "->"; "<-"] -> - accept_before_syms [":"] strm - | _ -> raise Stream.Failure - -let test_ssreqid = Gram.Entry.of_parser "test_ssreqid" accept_ssreqid - -GEXTEND Gram - GLOBAL: ssreqid; - ssreqpat: [ - [ id = Prim.ident -> IPatId id - | "_" -> IPatAnon Drop - | "?" -> IPatAnon One - | occ = ssrdocc; "->" -> (match occ with - | None, occ -> IPatRewrite (occ, L2R) - | _ -> CErrors.user_err ~loc:!@loc (str"Only occurrences are allowed here")) - | occ = ssrdocc; "<-" -> (match occ with - | None, occ -> IPatRewrite (occ, R2L) - | _ -> CErrors.user_err ~loc:!@loc (str "Only occurrences are allowed here")) - | "->" -> IPatRewrite (allocc, L2R) - | "<-" -> IPatRewrite (allocc, R2L) - ]]; - ssreqid: [ - [ test_ssreqid; pat = ssreqpat -> Some pat - | test_ssreqid -> None - ]]; -END - -(** Bookkeeping (discharge-intro) argument *) - -(* Since all bookkeeping ssr commands have the same discharge-intro *) -(* argument format we use a single grammar entry point to parse them. *) -(* the entry point parses only non-empty arguments to avoid conflicts *) -(* with the basic Coq tactics. *) - -(* type ssrarg = ssrbwdview * (ssreqid * (ssrdgens * ssripats)) *) - -let pr_ssrarg _ _ _ (view, (eqid, (dgens, ipats))) = - let pri = pr_intros (gens_sep dgens) in - pr_view2 view ++ pr_eqid eqid ++ pr_dgens pr_gen dgens ++ pri ipats - -ARGUMENT EXTEND ssrarg TYPED AS ssrfwdview * (ssreqid * (ssrdgens * ssrintros)) - PRINTED BY pr_ssrarg -| [ ssrfwdview(view) ssreqid(eqid) ssrdgens(dgens) ssrintros(ipats) ] -> - [ view, (eqid, (dgens, ipats)) ] -| [ ssrfwdview(view) ssrclear(clr) ssrintros(ipats) ] -> - [ view, (None, (([], clr), ipats)) ] -| [ ssreqid(eqid) ssrdgens(dgens) ssrintros(ipats) ] -> - [ [], (eqid, (dgens, ipats)) ] -| [ ssrclear_ne(clr) ssrintros(ipats) ] -> - [ [], (None, (([], clr), ipats)) ] -| [ ssrintros_ne(ipats) ] -> - [ [], (None, (([], []), ipats)) ] -END - -(** The "clear" tactic *) - -(* We just add a numeric version that clears the n top assumptions. *) - -TACTIC EXTEND ssrclear - | [ "clear" natural(n) ] -> [ tclIPAT (List.init n (fun _ -> IPatAnon Drop)) ] -END - -(** The "move" tactic *) - -(* TODO: review this, in particular the => _ and => [] cases *) -let rec improper_intros = function - | IPatSimpl _ :: ipats -> improper_intros ipats - | (IPatId _ | IPatAnon _ | IPatCase _ | IPatDispatch _) :: _ -> false - | _ -> true (* FIXME *) - -let check_movearg = function - | view, (eqid, _) when view <> [] && eqid <> None -> - CErrors.user_err (Pp.str "incompatible view and equation in move tactic") - | view, (_, (([gen :: _], _), _)) when view <> [] && has_occ gen -> - CErrors.user_err (Pp.str "incompatible view and occurrence switch in move tactic") - | _, (_, ((dgens, _), _)) when List.length dgens > 1 -> - CErrors.user_err (Pp.str "dependents switch `/' in move tactic") - | _, (eqid, (_, ipats)) when eqid <> None && improper_intros ipats -> - CErrors.user_err (Pp.str "no proper intro pattern for equation in move tactic") - | arg -> arg - -ARGUMENT EXTEND ssrmovearg TYPED AS ssrarg PRINTED BY pr_ssrarg -| [ ssrarg(arg) ] -> [ check_movearg arg ] -END - -let movearg_of_parsed_movearg (v,(eq,(dg,ip))) = - (v,(eq,(ssrdgens_of_parsed_dgens dg,ip))) - -TACTIC EXTEND ssrmove -| [ "move" ssrmovearg(arg) ssrrpat(pat) ] -> - [ ssrmovetac (movearg_of_parsed_movearg arg) <*> tclIPAT [pat] ] -| [ "move" ssrmovearg(arg) ssrclauses(clauses) ] -> - [ tclCLAUSES (ssrmovetac (movearg_of_parsed_movearg arg)) clauses ] -| [ "move" ssrrpat(pat) ] -> [ tclIPAT [pat] ] -| [ "move" ] -> [ ssrsmovetac ] -END - -let check_casearg = function -| view, (_, (([_; gen :: _], _), _)) when view <> [] && has_occ gen -> - CErrors.user_err (Pp.str "incompatible view and occurrence switch in dependent case tactic") -| arg -> arg - -ARGUMENT EXTEND ssrcasearg TYPED AS ssrarg PRINTED BY pr_ssrarg -| [ ssrarg(arg) ] -> [ check_casearg arg ] -END - -TACTIC EXTEND ssrcase -| [ "case" ssrcasearg(arg) ssrclauses(clauses) ] -> - [ tclCLAUSES (ssrcasetac (movearg_of_parsed_movearg arg)) clauses ] -| [ "case" ] -> [ ssrscasetoptac ] -END - -(** The "elim" tactic *) - -TACTIC EXTEND ssrelim -| [ "elim" ssrarg(arg) ssrclauses(clauses) ] -> - [ tclCLAUSES (ssrelimtac (movearg_of_parsed_movearg arg)) clauses ] -| [ "elim" ] -> [ ssrselimtoptac ] -END - -(** 6. Backward chaining tactics: apply, exact, congr. *) - -(** The "apply" tactic *) - -let pr_agen (docc, dt) = pr_docc docc ++ pr_term dt -let pr_ssragen _ _ _ = pr_agen -let pr_ssragens _ _ _ = pr_dgens pr_agen - -ARGUMENT EXTEND ssragen TYPED AS ssrdocc * ssrterm PRINTED BY pr_ssragen -| [ "{" ne_ssrhyp_list(clr) "}" ssrterm(dt) ] -> [ mkclr clr, dt ] -| [ ssrterm(dt) ] -> [ nodocc, dt ] -END - -ARGUMENT EXTEND ssragens TYPED AS ssragen list list * ssrclear -PRINTED BY pr_ssragens -| [ "{" ne_ssrhyp_list(clr) "}" ssrterm(dt) ssragens(agens) ] -> - [ cons_gen (mkclr clr, dt) agens ] -| [ "{" ne_ssrhyp_list(clr) "}" ] -> [ [[]], clr] -| [ ssrterm(dt) ssragens(agens) ] -> - [ cons_gen (nodocc, dt) agens ] -| [ ] -> [ [[]], [] ] -END - -let mk_applyarg views agens intros = views, (agens, intros) - -let pr_ssraarg _ _ _ (view, (dgens, ipats)) = - let pri = pr_intros (gens_sep dgens) in - pr_view view ++ pr_dgens pr_agen dgens ++ pri ipats - -ARGUMENT EXTEND ssrapplyarg -TYPED AS ssrbwdview * (ssragens * ssrintros) -PRINTED BY pr_ssraarg -| [ ":" ssragen(gen) ssragens(dgens) ssrintros(intros) ] -> - [ mk_applyarg [] (cons_gen gen dgens) intros ] -| [ ssrclear_ne(clr) ssrintros(intros) ] -> - [ mk_applyarg [] ([], clr) intros ] -| [ ssrintros_ne(intros) ] -> - [ mk_applyarg [] ([], []) intros ] -| [ ssrbwdview(view) ":" ssragen(gen) ssragens(dgens) ssrintros(intros) ] -> - [ mk_applyarg view (cons_gen gen dgens) intros ] -| [ ssrbwdview(view) ssrclear(clr) ssrintros(intros) ] -> - [ mk_applyarg view ([], clr) intros ] - END - -TACTIC EXTEND ssrapply -| [ "apply" ssrapplyarg(arg) ] -> [ - let views, (gens_clr, intros) = arg in - inner_ssrapplytac views gens_clr ist <*> tclIPATssr intros ] -| [ "apply" ] -> [ apply_top_tac ] -END - -(** The "exact" tactic *) - -let mk_exactarg views dgens = mk_applyarg views dgens [] - -ARGUMENT EXTEND ssrexactarg TYPED AS ssrapplyarg PRINTED BY pr_ssraarg -| [ ":" ssragen(gen) ssragens(dgens) ] -> - [ mk_exactarg [] (cons_gen gen dgens) ] -| [ ssrbwdview(view) ssrclear(clr) ] -> - [ mk_exactarg view ([], clr) ] -| [ ssrclear_ne(clr) ] -> - [ mk_exactarg [] ([], clr) ] -END - -let vmexacttac pf = - Goal.enter begin fun gl -> - exact_no_check (EConstr.mkCast (pf, _vmcast, Tacmach.New.pf_concl gl)) - end - -TACTIC EXTEND ssrexact -| [ "exact" ssrexactarg(arg) ] -> [ - let views, (gens_clr, _) = arg in - V82.tactic (tclBY (V82.of_tactic (inner_ssrapplytac views gens_clr ist))) ] -| [ "exact" ] -> [ - V82.tactic (Tacticals.tclORELSE (donetac ~-1) (tclBY (V82.of_tactic apply_top_tac))) ] -| [ "exact" "<:" lconstr(pf) ] -> [ vmexacttac pf ] -END - -(** The "congr" tactic *) - -(* type ssrcongrarg = open_constr * (int * constr) *) - -let pr_ssrcongrarg _ _ _ ((n, f), dgens) = - (if n <= 0 then mt () else str " " ++ int n) ++ - str " " ++ pr_term f ++ pr_dgens pr_gen dgens - -ARGUMENT EXTEND ssrcongrarg TYPED AS (int * ssrterm) * ssrdgens - PRINTED BY pr_ssrcongrarg -| [ natural(n) constr(c) ssrdgens(dgens) ] -> [ (n, mk_term xNoFlag c), dgens ] -| [ natural(n) constr(c) ] -> [ (n, mk_term xNoFlag c),([[]],[]) ] -| [ constr(c) ssrdgens(dgens) ] -> [ (0, mk_term xNoFlag c), dgens ] -| [ constr(c) ] -> [ (0, mk_term xNoFlag c), ([[]],[]) ] -END - - - -TACTIC EXTEND ssrcongr -| [ "congr" ssrcongrarg(arg) ] -> -[ let arg, dgens = arg in - V82.tactic begin - match dgens with - | [gens], clr -> Tacticals.tclTHEN (genstac (gens,clr)) (newssrcongrtac arg ist) - | _ -> errorstrm (str"Dependent family abstractions not allowed in congr") - end] -END - -(** 7. Rewriting tactics (rewrite, unlock) *) - -(** Coq rewrite compatibility flag *) - -(** Rewrite clear/occ switches *) - -let pr_rwocc = function - | None, None -> mt () - | None, occ -> pr_occ occ - | Some clr, _ -> pr_clear_ne clr - -let pr_ssrrwocc _ _ _ = pr_rwocc - -ARGUMENT EXTEND ssrrwocc TYPED AS ssrdocc PRINTED BY pr_ssrrwocc -| [ "{" ssrhyp_list(clr) "}" ] -> [ mkclr clr ] -| [ "{" ssrocc(occ) "}" ] -> [ mkocc occ ] -| [ ] -> [ noclr ] -END - -(** Rewrite rules *) - -let pr_rwkind = function - | RWred s -> pr_simpl s - | RWdef -> str "/" - | RWeq -> mt () - -let wit_ssrrwkind = add_genarg "ssrrwkind" pr_rwkind - -let pr_rule = function - | RWred s, _ -> pr_simpl s - | RWdef, r-> str "/" ++ pr_term r - | RWeq, r -> pr_term r - -let pr_ssrrule _ _ _ = pr_rule - -let noruleterm loc = mk_term xNoFlag (mkCProp loc) - -ARGUMENT EXTEND ssrrule_ne TYPED AS ssrrwkind * ssrterm PRINTED BY pr_ssrrule - | [ "YouShouldNotTypeThis" ] -> [ anomaly "Grammar placeholder match" ] -END - -GEXTEND Gram - GLOBAL: ssrrule_ne; - ssrrule_ne : [ - [ test_not_ssrslashnum; x = - [ "/"; t = ssrterm -> RWdef, t - | t = ssrterm -> RWeq, t - | s = ssrsimpl_ne -> RWred s, noruleterm (Some !@loc) - ] -> x - | s = ssrsimpl_ne -> RWred s, noruleterm (Some !@loc) - ]]; -END - -ARGUMENT EXTEND ssrrule TYPED AS ssrrule_ne PRINTED BY pr_ssrrule - | [ ssrrule_ne(r) ] -> [ r ] - | [ ] -> [ RWred Nop, noruleterm (Some loc) ] -END - -(** Rewrite arguments *) - -let pr_option f = function None -> mt() | Some x -> f x -let pr_pattern_squarep= pr_option (fun r -> str "[" ++ pr_rpattern r ++ str "]") -let pr_ssrpattern_squarep _ _ _ = pr_pattern_squarep -let pr_rwarg ((d, m), ((docc, rx), r)) = - pr_rwdir d ++ pr_mult m ++ pr_rwocc docc ++ pr_pattern_squarep rx ++ pr_rule r - -let pr_ssrrwarg _ _ _ = pr_rwarg - -ARGUMENT EXTEND ssrpattern_squarep -TYPED AS rpattern option PRINTED BY pr_ssrpattern_squarep - | [ "[" rpattern(rdx) "]" ] -> [ Some rdx ] - | [ ] -> [ None ] -END - -ARGUMENT EXTEND ssrpattern_ne_squarep -TYPED AS rpattern option PRINTED BY pr_ssrpattern_squarep - | [ "[" rpattern(rdx) "]" ] -> [ Some rdx ] -END - - -ARGUMENT EXTEND ssrrwarg - TYPED AS (ssrdir * ssrmult) * ((ssrdocc * rpattern option) * ssrrule) - PRINTED BY pr_ssrrwarg - | [ "-" ssrmult(m) ssrrwocc(docc) ssrpattern_squarep(rx) ssrrule_ne(r) ] -> - [ mk_rwarg (R2L, m) (docc, rx) r ] - | [ "-/" ssrterm(t) ] -> (* just in case '-/' should become a token *) - [ mk_rwarg (R2L, nomult) norwocc (RWdef, t) ] - | [ ssrmult_ne(m) ssrrwocc(docc) ssrpattern_squarep(rx) ssrrule_ne(r) ] -> - [ mk_rwarg (L2R, m) (docc, rx) r ] - | [ "{" ne_ssrhyp_list(clr) "}" ssrpattern_ne_squarep(rx) ssrrule_ne(r) ] -> - [ mk_rwarg norwmult (mkclr clr, rx) r ] - | [ "{" ne_ssrhyp_list(clr) "}" ssrrule(r) ] -> - [ mk_rwarg norwmult (mkclr clr, None) r ] - | [ "{" ssrocc(occ) "}" ssrpattern_squarep(rx) ssrrule_ne(r) ] -> - [ mk_rwarg norwmult (mkocc occ, rx) r ] - | [ "{" "}" ssrpattern_squarep(rx) ssrrule_ne(r) ] -> - [ mk_rwarg norwmult (nodocc, rx) r ] - | [ ssrpattern_ne_squarep(rx) ssrrule_ne(r) ] -> - [ mk_rwarg norwmult (noclr, rx) r ] - | [ ssrrule_ne(r) ] -> - [ mk_rwarg norwmult norwocc r ] -END - -TACTIC EXTEND ssrinstofruleL2R -| [ "ssrinstancesofruleL2R" ssrterm(arg) ] -> [ V82.tactic (ssrinstancesofrule ist L2R arg) ] -END -TACTIC EXTEND ssrinstofruleR2L -| [ "ssrinstancesofruleR2L" ssrterm(arg) ] -> [ V82.tactic (ssrinstancesofrule ist R2L arg) ] -END - -(** Rewrite argument sequence *) - -(* type ssrrwargs = ssrrwarg list *) - -let pr_ssrrwargs _ _ _ rwargs = pr_list spc pr_rwarg rwargs - -ARGUMENT EXTEND ssrrwargs TYPED AS ssrrwarg list PRINTED BY pr_ssrrwargs - | [ "YouShouldNotTypeThis" ] -> [ anomaly "Grammar placeholder match" ] -END - -let ssr_rw_syntax = Summary.ref ~name:"SSR:rewrite" true - -let _ = - Goptions.declare_bool_option - { Goptions.optname = "ssreflect rewrite"; - Goptions.optkey = ["SsrRewrite"]; - Goptions.optread = (fun _ -> !ssr_rw_syntax); - Goptions.optdepr = false; - Goptions.optwrite = (fun b -> ssr_rw_syntax := b) } - -let test_ssr_rw_syntax = - let test strm = - if not !ssr_rw_syntax then raise Stream.Failure else - if is_ssr_loaded () then () else - match Util.stream_nth 0 strm with - | Tok.KEYWORD key when List.mem key.[0] ['{'; '['; '/'] -> () - | _ -> raise Stream.Failure in - Gram.Entry.of_parser "test_ssr_rw_syntax" test - -GEXTEND Gram - GLOBAL: ssrrwargs; - ssrrwargs: [[ test_ssr_rw_syntax; a = LIST1 ssrrwarg -> a ]]; -END - -(** The "rewrite" tactic *) - -TACTIC EXTEND ssrrewrite - | [ "rewrite" ssrrwargs(args) ssrclauses(clauses) ] -> - [ tclCLAUSES (old_tac (ssrrewritetac ist args)) clauses ] -END - -(** The "unlock" tactic *) - -let pr_unlockarg (occ, t) = pr_occ occ ++ pr_term t -let pr_ssrunlockarg _ _ _ = pr_unlockarg - -ARGUMENT EXTEND ssrunlockarg TYPED AS ssrocc * ssrterm - PRINTED BY pr_ssrunlockarg - | [ "{" ssrocc(occ) "}" ssrterm(t) ] -> [ occ, t ] - | [ ssrterm(t) ] -> [ None, t ] -END - -let pr_ssrunlockargs _ _ _ args = pr_list spc pr_unlockarg args - -ARGUMENT EXTEND ssrunlockargs TYPED AS ssrunlockarg list - PRINTED BY pr_ssrunlockargs - | [ ssrunlockarg_list(args) ] -> [ args ] -END - -TACTIC EXTEND ssrunlock - | [ "unlock" ssrunlockargs(args) ssrclauses(clauses) ] -> - [ tclCLAUSES (old_tac (unlocktac ist args)) clauses ] -END - -(** 8. Forward chaining tactics (pose, set, have, suffice, wlog) *) - - -TACTIC EXTEND ssrpose -| [ "pose" ssrfixfwd(ffwd) ] -> [ V82.tactic (ssrposetac ffwd) ] -| [ "pose" ssrcofixfwd(ffwd) ] -> [ V82.tactic (ssrposetac ffwd) ] -| [ "pose" ssrfwdid(id) ssrposefwd(fwd) ] -> [ V82.tactic (ssrposetac (id, fwd)) ] -END - -(** The "set" tactic *) - -(* type ssrsetfwd = ssrfwd * ssrdocc *) - -TACTIC EXTEND ssrset -| [ "set" ssrfwdid(id) ssrsetfwd(fwd) ssrclauses(clauses) ] -> - [ tclCLAUSES (old_tac (ssrsettac id fwd)) clauses ] -END - -(** The "have" tactic *) - -(* type ssrhavefwd = ssrfwd * ssrhint *) - - -(* Pltac. *) - -(* The standard TACTIC EXTEND does not work for abstract *) -GEXTEND Gram - GLOBAL: tactic_expr; - tactic_expr: LEVEL "3" - [ RIGHTA [ IDENT "abstract"; gens = ssrdgens -> - ssrtac_expr ~loc:!@loc "abstract" - [Tacexpr.TacGeneric (Genarg.in_gen (Genarg.rawwit wit_ssrdgens) gens)] ]]; -END -TACTIC EXTEND ssrabstract -| [ "abstract" ssrdgens(gens) ] -> [ - if List.length (fst gens) <> 1 then - errorstrm (str"dependents switches '/' not allowed here"); - Ssripats.ssrabstract (ssrdgens_of_parsed_dgens gens) ] -END - -TACTIC EXTEND ssrhave -| [ "have" ssrhavefwdwbinders(fwd) ] -> - [ V82.tactic (havetac ist fwd false false) ] -END - -TACTIC EXTEND ssrhavesuff -| [ "have" "suff" ssrhpats_nobs(pats) ssrhavefwd(fwd) ] -> - [ V82.tactic (havetac ist (false,(pats,fwd)) true false) ] -END - -TACTIC EXTEND ssrhavesuffices -| [ "have" "suffices" ssrhpats_nobs(pats) ssrhavefwd(fwd) ] -> - [ V82.tactic (havetac ist (false,(pats,fwd)) true false) ] -END - -TACTIC EXTEND ssrsuffhave -| [ "suff" "have" ssrhpats_nobs(pats) ssrhavefwd(fwd) ] -> - [ V82.tactic (havetac ist (false,(pats,fwd)) true true) ] -END - -TACTIC EXTEND ssrsufficeshave -| [ "suffices" "have" ssrhpats_nobs(pats) ssrhavefwd(fwd) ] -> - [ V82.tactic (havetac ist (false,(pats,fwd)) true true) ] -END - -(** The "suffice" tactic *) - -let pr_ssrsufffwdwbinders _ _ prt (hpats, (fwd, hint)) = - pr_hpats hpats ++ pr_fwd fwd ++ pr_hint prt hint - -ARGUMENT EXTEND ssrsufffwd - TYPED AS ssrhpats * (ssrfwd * ssrhint) PRINTED BY pr_ssrsufffwdwbinders -| [ ssrhpats(pats) ssrbinder_list(bs) ":" ast_closure_lterm(t) ssrhint(hint) ] -> - [ let ((clr, pats), binders), simpl = pats in - let allbs = intro_id_to_binder binders @ bs in - let allbinders = binders @ List.flatten (binder_to_intro_id bs) in - let fwd = mkFwdHint ":" t in - (((clr, pats), allbinders), simpl), (bind_fwd allbs fwd, hint) ] -END - - -TACTIC EXTEND ssrsuff -| [ "suff" ssrsufffwd(fwd) ] -> [ V82.tactic (sufftac ist fwd) ] -END - -TACTIC EXTEND ssrsuffices -| [ "suffices" ssrsufffwd(fwd) ] -> [ V82.tactic (sufftac ist fwd) ] -END - -(** The "wlog" (Without Loss Of Generality) tactic *) - -(* type ssrwlogfwd = ssrwgen list * ssrfwd *) - -let pr_ssrwlogfwd _ _ _ (gens, t) = - str ":" ++ pr_list mt pr_wgen gens ++ spc() ++ pr_fwd t - -ARGUMENT EXTEND ssrwlogfwd TYPED AS ssrwgen list * ssrfwd - PRINTED BY pr_ssrwlogfwd -| [ ":" ssrwgen_list(gens) "/" ast_closure_lterm(t) ] -> [ gens, mkFwdHint "/" t] -END - - -TACTIC EXTEND ssrwlog -| [ "wlog" ssrhpats_nobs(pats) ssrwlogfwd(fwd) ssrhint(hint) ] -> - [ V82.tactic (wlogtac ist pats fwd hint false `NoGen) ] -END - -TACTIC EXTEND ssrwlogs -| [ "wlog" "suff" ssrhpats_nobs(pats) ssrwlogfwd(fwd) ssrhint(hint) ] -> - [ V82.tactic (wlogtac ist pats fwd hint true `NoGen) ] -END - -TACTIC EXTEND ssrwlogss -| [ "wlog" "suffices" ssrhpats_nobs(pats) ssrwlogfwd(fwd) ssrhint(hint) ]-> - [ V82.tactic (wlogtac ist pats fwd hint true `NoGen) ] -END - -TACTIC EXTEND ssrwithoutloss -| [ "without" "loss" ssrhpats_nobs(pats) ssrwlogfwd(fwd) ssrhint(hint) ] -> - [ V82.tactic (wlogtac ist pats fwd hint false `NoGen) ] -END - -TACTIC EXTEND ssrwithoutlosss -| [ "without" "loss" "suff" - ssrhpats_nobs(pats) ssrwlogfwd(fwd) ssrhint(hint) ] -> - [ V82.tactic (wlogtac ist pats fwd hint true `NoGen) ] -END - -TACTIC EXTEND ssrwithoutlossss -| [ "without" "loss" "suffices" - ssrhpats_nobs(pats) ssrwlogfwd(fwd) ssrhint(hint) ]-> - [ V82.tactic (wlogtac ist pats fwd hint true `NoGen) ] -END - -(* Generally have *) -let pr_idcomma _ _ _ = function - | None -> mt() - | Some None -> str"_, " - | Some (Some id) -> pr_id id ++ str", " - -ARGUMENT EXTEND ssr_idcomma TYPED AS ident option option PRINTED BY pr_idcomma - | [ ] -> [ None ] -END - -let accept_idcomma strm = - match stream_nth 0 strm with - | Tok.IDENT _ | Tok.KEYWORD "_" -> accept_before_syms [","] strm - | _ -> raise Stream.Failure - -let test_idcomma = Gram.Entry.of_parser "test_idcomma" accept_idcomma - -GEXTEND Gram - GLOBAL: ssr_idcomma; - ssr_idcomma: [ [ test_idcomma; - ip = [ id = IDENT -> Some (Id.of_string id) | "_" -> None ]; "," -> - Some ip - ] ]; -END - -let augment_preclr clr1 (((clr0, x),y),z) = (((clr1 @ clr0, x),y),z) - -TACTIC EXTEND ssrgenhave -| [ "gen" "have" ssrclear(clr) - ssr_idcomma(id) ssrhpats_nobs(pats) ssrwlogfwd(fwd) ssrhint(hint) ] -> - [ let pats = augment_preclr clr pats in - V82.tactic (wlogtac ist pats fwd hint false (`Gen id)) ] -END - -TACTIC EXTEND ssrgenhave2 -| [ "generally" "have" ssrclear(clr) - ssr_idcomma(id) ssrhpats_nobs(pats) ssrwlogfwd(fwd) ssrhint(hint) ] -> - [ let pats = augment_preclr clr pats in - V82.tactic (wlogtac ist pats fwd hint false (`Gen id)) ] -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 ;; - - -(* vim: set filetype=ocaml foldmethod=marker: *) diff --git a/plugins/ssr/ssrparser.mlg b/plugins/ssr/ssrparser.mlg new file mode 100644 index 0000000000..8699b62c39 --- /dev/null +++ b/plugins/ssr/ssrparser.mlg @@ -0,0 +1,2628 @@ +(************************************************************************) +(* * The Coq Proof Assistant / The Coq Development Team *) +(* v * INRIA, CNRS and contributors - Copyright 1999-2018 *) +(* { CErrors.anomaly (Pp.str "Grammar placeholder match") } +END +GRAMMAR EXTEND Gram + GLOBAL: ssrtacarg; + ssrtacarg: [[ tac = tactic_expr LEVEL "5" -> { tac } ]]; +END + +{ + +(* Lexically closed tactic for tacticals. *) +let pr_ssrtclarg _ _ prt tac = prt tacltop tac + +} + +ARGUMENT EXTEND ssrtclarg TYPED AS ssrtacarg + PRINTED BY { pr_ssrtclarg } +| [ ssrtacarg(tac) ] -> { tac } +END + +{ + +open Genarg + +(** Adding a new uninterpreted generic argument type *) +let add_genarg tag pr = + let wit = Genarg.make0 tag in + let tag = Geninterp.Val.create tag in + let glob ist x = (ist, x) in + let subst _ x = x in + let interp ist x = Ftactic.return (Geninterp.Val.Dyn (tag, x)) in + let gen_pr _ _ _ = pr in + let () = Genintern.register_intern0 wit glob in + let () = Genintern.register_subst0 wit subst in + let () = Geninterp.register_interp0 wit interp in + let () = Geninterp.register_val0 wit (Some (Geninterp.Val.Base tag)) in + Pptactic.declare_extra_genarg_pprule wit gen_pr gen_pr gen_pr; + wit + +(** Primitive parsing to avoid syntax conflicts with basic tactics. *) + +let accept_before_syms syms strm = + match Util.stream_nth 1 strm with + | Tok.KEYWORD sym when List.mem sym syms -> () + | _ -> raise Stream.Failure + +let accept_before_syms_or_any_id syms strm = + match Util.stream_nth 1 strm with + | Tok.KEYWORD sym when List.mem sym syms -> () + | Tok.IDENT _ -> () + | _ -> raise Stream.Failure + +let accept_before_syms_or_ids syms ids strm = + match Util.stream_nth 1 strm with + | Tok.KEYWORD sym when List.mem sym syms -> () + | Tok.IDENT id when List.mem id ids -> () + | _ -> raise Stream.Failure + +open Ssrast +let pr_id = Ppconstr.pr_id +let pr_name = function Name id -> pr_id id | Anonymous -> str "_" +let pr_spc () = str " " +let pr_list = prlist_with_sep + +(**************************** ssrhyp **************************************) + +let pr_ssrhyp _ _ _ = pr_hyp + +let wit_ssrhyprep = add_genarg "ssrhyprep" pr_hyp + +let intern_hyp ist (SsrHyp (loc, id) as hyp) = + let _ = Tacintern.intern_genarg ist (in_gen (rawwit wit_var) CAst.(make ?loc id)) in + if not_section_id id then hyp else + hyp_err ?loc "Can't clear section hypothesis " id + +open Pcoq.Prim + +} + +ARGUMENT EXTEND ssrhyp TYPED AS ssrhyprep PRINTED BY { pr_ssrhyp } + INTERPRETED BY { interp_hyp } + GLOBALIZED BY { intern_hyp } + | [ ident(id) ] -> { SsrHyp (Loc.tag ~loc id) } +END + +{ + +let pr_hoi = hoik pr_hyp +let pr_ssrhoi _ _ _ = pr_hoi + +let wit_ssrhoirep = add_genarg "ssrhoirep" pr_hoi + +let intern_ssrhoi ist = function + | Hyp h -> Hyp (intern_hyp ist h) + | Id (SsrHyp (_, id)) as hyp -> + let _ = Tacintern.intern_genarg ist (in_gen (rawwit wit_ident) id) in + hyp + +let interp_ssrhoi ist gl = function + | Hyp h -> let s, h' = interp_hyp ist gl h in s, Hyp h' + | Id (SsrHyp (loc, id)) -> + let s, id' = interp_wit wit_ident ist gl id in + s, Id (SsrHyp (loc, id')) + +} + +ARGUMENT EXTEND ssrhoi_hyp TYPED AS ssrhoirep PRINTED BY { pr_ssrhoi } + INTERPRETED BY { interp_ssrhoi } + GLOBALIZED BY { intern_ssrhoi } + | [ ident(id) ] -> { Hyp (SsrHyp(Loc.tag ~loc id)) } +END +ARGUMENT EXTEND ssrhoi_id TYPED AS ssrhoirep PRINTED BY { pr_ssrhoi } + INTERPRETED BY { interp_ssrhoi } + GLOBALIZED BY { intern_ssrhoi } + | [ ident(id) ] -> { Id (SsrHyp(Loc.tag ~loc id)) } +END + +{ + +let pr_ssrhyps _ _ _ = pr_hyps + +} + +ARGUMENT EXTEND ssrhyps TYPED AS ssrhyp list PRINTED BY { pr_ssrhyps } + INTERPRETED BY { interp_hyps } + | [ ssrhyp_list(hyps) ] -> { check_hyps_uniq [] hyps; hyps } +END + +(** Rewriting direction *) + +{ + +let pr_rwdir = function L2R -> mt() | R2L -> str "-" + +let wit_ssrdir = add_genarg "ssrdir" pr_dir + +(** Simpl switch *) + +let pr_ssrsimpl _ _ _ = pr_simpl + +let wit_ssrsimplrep = add_genarg "ssrsimplrep" pr_simpl + +let test_ssrslashnum b1 b2 strm = + match Util.stream_nth 0 strm with + | Tok.KEYWORD "/" -> + (match Util.stream_nth 1 strm with + | Tok.INT _ when b1 -> + (match Util.stream_nth 2 strm with + | Tok.KEYWORD "=" | Tok.KEYWORD "/=" when not b2 -> () + | Tok.KEYWORD "/" -> + if not b2 then () else begin + match Util.stream_nth 3 strm with + | Tok.INT _ -> () + | _ -> raise Stream.Failure + end + | _ -> raise Stream.Failure) + | Tok.KEYWORD "/" when not b1 -> + (match Util.stream_nth 2 strm with + | Tok.KEYWORD "=" when not b2 -> () + | Tok.INT _ when b2 -> + (match Util.stream_nth 3 strm with + | Tok.KEYWORD "=" -> () + | _ -> raise Stream.Failure) + | _ when not b2 -> () + | _ -> raise Stream.Failure) + | Tok.KEYWORD "=" when not b1 && not b2 -> () + | _ -> raise Stream.Failure) + | Tok.KEYWORD "//" when not b1 -> + (match Util.stream_nth 1 strm with + | Tok.KEYWORD "=" when not b2 -> () + | Tok.INT _ when b2 -> + (match Util.stream_nth 2 strm with + | Tok.KEYWORD "=" -> () + | _ -> raise Stream.Failure) + | _ when not b2 -> () + | _ -> raise Stream.Failure) + | _ -> raise Stream.Failure + +let test_ssrslashnum10 = test_ssrslashnum true false +let test_ssrslashnum11 = test_ssrslashnum true true +let test_ssrslashnum01 = test_ssrslashnum false true +let test_ssrslashnum00 = test_ssrslashnum false false + +let negate_parser f x = + let rc = try Some (f x) with Stream.Failure -> None in + match rc with + | None -> () + | Some _ -> raise Stream.Failure + +let test_not_ssrslashnum = + Pcoq.Gram.Entry.of_parser + "test_not_ssrslashnum" (negate_parser test_ssrslashnum10) +let test_ssrslashnum00 = + Pcoq.Gram.Entry.of_parser "test_ssrslashnum01" test_ssrslashnum00 +let test_ssrslashnum10 = + Pcoq.Gram.Entry.of_parser "test_ssrslashnum10" test_ssrslashnum10 +let test_ssrslashnum11 = + Pcoq.Gram.Entry.of_parser "test_ssrslashnum11" test_ssrslashnum11 +let test_ssrslashnum01 = + Pcoq.Gram.Entry.of_parser "test_ssrslashnum01" test_ssrslashnum01 + +} + +ARGUMENT EXTEND ssrsimpl_ne TYPED AS ssrsimplrep PRINTED BY { pr_ssrsimpl } +| [ "//=" ] -> { SimplCut (~-1,~-1) } +| [ "/=" ] -> { Simpl ~-1 } +END + +(* Pcoq.Prim. *) +GRAMMAR EXTEND Gram + GLOBAL: ssrsimpl_ne; + ssrsimpl_ne: [ + [ test_ssrslashnum11; "/"; n = natural; "/"; m = natural; "=" -> { SimplCut(n,m) } + | test_ssrslashnum10; "/"; n = natural; "/" -> { Cut n } + | test_ssrslashnum10; "/"; n = natural; "=" -> { Simpl n } + | test_ssrslashnum10; "/"; n = natural; "/=" -> { SimplCut (n,~-1) } + | test_ssrslashnum10; "/"; n = natural; "/"; "=" -> { SimplCut (n,~-1) } + | test_ssrslashnum01; "//"; m = natural; "=" -> { SimplCut (~-1,m) } + | test_ssrslashnum00; "//" -> { Cut ~-1 } + ]]; + +END + +ARGUMENT EXTEND ssrsimpl TYPED AS ssrsimplrep PRINTED BY { pr_ssrsimpl } +| [ ssrsimpl_ne(sim) ] -> { sim } +| [ ] -> { Nop } +END + +{ + +let pr_ssrclear _ _ _ = pr_clear mt + +} + +ARGUMENT EXTEND ssrclear_ne TYPED AS ssrhyps PRINTED BY { pr_ssrclear } +| [ "{" ne_ssrhyp_list(clr) "}" ] -> { check_hyps_uniq [] clr; clr } +END + +ARGUMENT EXTEND ssrclear TYPED AS ssrclear_ne PRINTED BY { pr_ssrclear } +| [ ssrclear_ne(clr) ] -> { clr } +| [ ] -> { [] } +END + +(** Indexes *) + +(* Since SSR indexes are always positive numbers, we use the 0 value *) +(* to encode an omitted index. We reuse the in or_var type, but we *) +(* supply our own interpretation function, which checks for non *) +(* positive values, and allows the use of constr numerals, so that *) +(* e.g., "let n := eval compute in (1 + 3) in (do n!clear)" works. *) + +{ + +let pr_index = function + | ArgVar {CAst.v=id} -> pr_id id + | ArgArg n when n > 0 -> int n + | _ -> mt () +let pr_ssrindex _ _ _ = pr_index + +let noindex = ArgArg 0 + +let check_index ?loc i = + if i > 0 then i else CErrors.user_err ?loc (str"Index not positive") +let mk_index ?loc = function + | ArgArg i -> ArgArg (check_index ?loc i) + | iv -> iv + +let interp_index ist gl idx = + Tacmach.project gl, + match idx with + | ArgArg _ -> idx + | ArgVar id -> + let i = + try + let v = Id.Map.find id.CAst.v ist.Tacinterp.lfun in + begin match Tacinterp.Value.to_int v with + | Some i -> i + | None -> + begin match Tacinterp.Value.to_constr v with + | Some c -> + let rc = Detyping.detype Detyping.Now false Id.Set.empty (pf_env gl) (project gl) c in + begin match Notation.uninterp_prim_token rc with + | _, Constrexpr.Numeral (s,b) -> + let n = int_of_string s in if b then n else -n + | _ -> raise Not_found + end + | None -> raise Not_found + end end + with _ -> CErrors.user_err ?loc:id.CAst.loc (str"Index not a number") in + ArgArg (check_index ?loc:id.CAst.loc i) + +open Pltac + +} + +ARGUMENT EXTEND ssrindex PRINTED BY { pr_ssrindex } + INTERPRETED BY { interp_index } +| [ int_or_var(i) ] -> { mk_index ~loc i } +END + + +(** Occurrence switch *) + +(* The standard syntax of complemented occurrence lists involves a single *) +(* initial "-", e.g., {-1 3 5}. An initial *) +(* "+" may be used to indicate positive occurrences (the default). The *) +(* "+" is optional, except if the list of occurrences starts with a *) +(* variable or is empty (to avoid confusion with a clear switch). The *) +(* empty positive switch "{+}" selects no occurrences, while the empty *) +(* negative switch "{-}" selects all occurrences explicitly; this is the *) +(* default, but "{-}" prevents the implicit clear, and can be used to *) +(* force dependent elimination -- see ndefectelimtac below. *) + +{ + +let pr_ssrocc _ _ _ = pr_occ + +open Pcoq.Prim + +} + +ARGUMENT EXTEND ssrocc TYPED AS (bool * int list) option PRINTED BY { pr_ssrocc } +| [ natural(n) natural_list(occ) ] -> { + Some (false, List.map (check_index ~loc) (n::occ)) } +| [ "-" natural_list(occ) ] -> { Some (true, occ) } +| [ "+" natural_list(occ) ] -> { Some (false, occ) } +END + + +(* modality *) + +{ + +let pr_mmod = function May -> str "?" | Must -> str "!" | Once -> mt () + +let wit_ssrmmod = add_genarg "ssrmmod" pr_mmod +let ssrmmod = Pcoq.create_generic_entry Pcoq.utactic "ssrmmod" (Genarg.rawwit wit_ssrmmod);; + +} + +GRAMMAR EXTEND Gram + GLOBAL: ssrmmod; + ssrmmod: [[ "!" -> { Must } | LEFTQMARK -> { May } | "?" -> { May } ]]; +END + +(** Rewrite multiplier: !n ?n *) + +{ + +let pr_mult (n, m) = + if n > 0 && m <> Once then int n ++ pr_mmod m else pr_mmod m + +let pr_ssrmult _ _ _ = pr_mult + +} + +ARGUMENT EXTEND ssrmult_ne TYPED AS (int * ssrmmod) PRINTED BY { pr_ssrmult } + | [ natural(n) ssrmmod(m) ] -> { check_index ~loc n, m } + | [ ssrmmod(m) ] -> { notimes, m } +END + +ARGUMENT EXTEND ssrmult TYPED AS ssrmult_ne PRINTED BY { pr_ssrmult } + | [ ssrmult_ne(m) ] -> { m } + | [ ] -> { nomult } +END + +{ + +(** Discharge occ switch (combined occurrence / clear switch *) + +let pr_docc = function + | None, occ -> pr_occ occ + | Some clr, _ -> pr_clear mt clr + +let pr_ssrdocc _ _ _ = pr_docc + +} + +ARGUMENT EXTEND ssrdocc TYPED AS (ssrclear option * ssrocc) PRINTED BY { pr_ssrdocc } +| [ "{" ssrocc(occ) "}" ] -> { mkocc occ } +| [ "{" ssrhyp_list(clr) "}" ] -> { mkclr clr } +END + +{ + +(* Old kinds of terms *) + +let input_ssrtermkind strm = match Util.stream_nth 0 strm with + | Tok.KEYWORD "(" -> xInParens + | Tok.KEYWORD "@" -> xWithAt + | _ -> xNoFlag + +let ssrtermkind = Pcoq.Gram.Entry.of_parser "ssrtermkind" input_ssrtermkind + +(* New kinds of terms *) + +let input_term_annotation strm = + match Stream.npeek 2 strm with + | Tok.KEYWORD "(" :: Tok.KEYWORD "(" :: _ -> `DoubleParens + | Tok.KEYWORD "(" :: _ -> `Parens + | Tok.KEYWORD "@" :: _ -> `At + | _ -> `None +let term_annotation = + Gram.Entry.of_parser "term_annotation" input_term_annotation + +(* terms *) + +(** Terms parsing. ********************************************************) + +(* Because we allow wildcards in term references, we need to stage the *) +(* interpretation of terms so that it occurs at the right time during *) +(* the execution of the tactic (e.g., so that we don't report an error *) +(* for a term that isn't actually used in the execution). *) +(* The term representation tracks whether the concrete initial term *) +(* started with an opening paren, which might avoid a conflict between *) +(* the ssrreflect term syntax and Gallina notation. *) + +(* Old terms *) +let pr_ssrterm _ _ _ = pr_term +let glob_ssrterm gs = function + | k, (_, Some c) -> k, Tacintern.intern_constr gs c + | ct -> ct +let subst_ssrterm s (k, c) = k, Tacsubst.subst_glob_constr_and_expr s c +let interp_ssrterm _ gl t = Tacmach.project gl, t + +open Pcoq.Constr + +} + +ARGUMENT EXTEND ssrterm + PRINTED BY { pr_ssrterm } + INTERPRETED BY { interp_ssrterm } + GLOBALIZED BY { glob_ssrterm } SUBSTITUTED BY { subst_ssrterm } + RAW_PRINTED BY { pr_ssrterm } + GLOB_PRINTED BY { pr_ssrterm } +| [ "YouShouldNotTypeThis" constr(c) ] -> { mk_lterm c } +END + +GRAMMAR EXTEND Gram + GLOBAL: ssrterm; + ssrterm: [[ k = ssrtermkind; c = Pcoq.Constr.constr -> { mk_term k c } ]]; +END + +(* New terms *) + +{ + +let pp_ast_closure_term _ _ _ = pr_ast_closure_term + +} + +ARGUMENT EXTEND ast_closure_term + PRINTED BY { pp_ast_closure_term } + INTERPRETED BY { interp_ast_closure_term } + GLOBALIZED BY { glob_ast_closure_term } + SUBSTITUTED BY { subst_ast_closure_term } + RAW_PRINTED BY { pp_ast_closure_term } + GLOB_PRINTED BY { pp_ast_closure_term } + | [ term_annotation(a) constr(c) ] -> { mk_ast_closure_term a c } +END +ARGUMENT EXTEND ast_closure_lterm + PRINTED BY { pp_ast_closure_term } + INTERPRETED BY { interp_ast_closure_term } + GLOBALIZED BY { glob_ast_closure_term } + SUBSTITUTED BY { subst_ast_closure_term } + RAW_PRINTED BY { pp_ast_closure_term } + GLOB_PRINTED BY { pp_ast_closure_term } + | [ term_annotation(a) lconstr(c) ] -> { mk_ast_closure_term a c } +END + +(* Old Views *) + +{ + +let pr_view = pr_list mt (fun c -> str "/" ++ pr_term c) + +let pr_ssrbwdview _ _ _ = pr_view + +} + +ARGUMENT EXTEND ssrbwdview TYPED AS ssrterm list + PRINTED BY { pr_ssrbwdview } +| [ "YouShouldNotTypeThis" ] -> { [] } +END + +(* Pcoq *) +GRAMMAR EXTEND Gram + GLOBAL: ssrbwdview; + ssrbwdview: [ + [ test_not_ssrslashnum; "/"; c = Pcoq.Constr.constr -> { [mk_term xNoFlag c] } + | test_not_ssrslashnum; "/"; c = Pcoq.Constr.constr; w = ssrbwdview -> { + (mk_term xNoFlag c) :: w } ]]; +END + +(* New Views *) + +{ + +let pr_ssrfwdview _ _ _ = pr_view2 + +} + +ARGUMENT EXTEND ssrfwdview TYPED AS ast_closure_term list + PRINTED BY { pr_ssrfwdview } +| [ "YouShouldNotTypeThis" ] -> { [] } +END + +(* Pcoq *) +GRAMMAR EXTEND Gram + GLOBAL: ssrfwdview; + ssrfwdview: [ + [ test_not_ssrslashnum; "/"; c = Pcoq.Constr.constr -> + { [mk_ast_closure_term `None c] } + | test_not_ssrslashnum; "/"; c = Pcoq.Constr.constr; w = ssrfwdview -> + { (mk_ast_closure_term `None c) :: w } ]]; +END + +(* ipats *) + +{ + +let remove_loc x = x.CAst.v + +let ipat_of_intro_pattern p = Tactypes.( + let rec ipat_of_intro_pattern = function + | IntroNaming (IntroIdentifier id) -> IPatId id + | IntroAction IntroWildcard -> IPatAnon Drop + | IntroAction (IntroOrAndPattern (IntroOrPattern iorpat)) -> + IPatCase + (List.map (List.map ipat_of_intro_pattern) + (List.map (List.map remove_loc) iorpat)) + | IntroAction (IntroOrAndPattern (IntroAndPattern iandpat)) -> + IPatCase + [List.map ipat_of_intro_pattern (List.map remove_loc iandpat)] + | IntroNaming IntroAnonymous -> IPatAnon One + | IntroAction (IntroRewrite b) -> IPatRewrite (allocc, if b then L2R else R2L) + | IntroNaming (IntroFresh id) -> IPatAnon One + | IntroAction (IntroApplyOn _) -> (* to do *) CErrors.user_err (Pp.str "TO DO") + | IntroAction (IntroInjection ips) -> + IPatInj [List.map ipat_of_intro_pattern (List.map remove_loc ips)] + | IntroForthcoming _ -> + (* Unable to determine which kind of ipat interp_introid could + * return [HH] *) + assert false + in + ipat_of_intro_pattern p +) + +let rec map_ipat map_id map_ssrhyp map_ast_closure_term = function + | (IPatSimpl _ | IPatAnon _ | IPatRewrite _ | IPatNoop) as x -> x + | IPatId id -> IPatId (map_id id) + | IPatAbstractVars l -> IPatAbstractVars (List.map map_id l) + | IPatClear clr -> IPatClear (List.map map_ssrhyp clr) + | IPatCase iorpat -> IPatCase (List.map (List.map (map_ipat map_id map_ssrhyp map_ast_closure_term)) iorpat) + | IPatDispatch iorpat -> IPatDispatch (List.map (List.map (map_ipat map_id map_ssrhyp map_ast_closure_term)) iorpat) + | IPatInj iorpat -> IPatInj (List.map (List.map (map_ipat map_id map_ssrhyp map_ast_closure_term)) iorpat) + | IPatView (clr,v) -> IPatView (clr,List.map map_ast_closure_term v) + | IPatTac _ -> assert false (*internal usage only *) + +let wit_ssripatrep = add_genarg "ssripatrep" pr_ipat + +let pr_ssripat _ _ _ = pr_ipat +let pr_ssripats _ _ _ = pr_ipats +let pr_ssriorpat _ _ _ = pr_iorpat + +let intern_ipat ist = + map_ipat + (fun id -> id) + (intern_hyp ist) + (glob_ast_closure_term ist) + +let intern_ipats ist = List.map (intern_ipat ist) + +let interp_intro_pattern = interp_wit wit_intro_pattern + +let interp_introid ist gl id = + try IntroNaming (IntroIdentifier (hyp_id (snd (interp_hyp ist gl (SsrHyp (Loc.tag id)))))) + with _ -> (snd (interp_intro_pattern ist gl (CAst.make @@ IntroNaming (IntroIdentifier id)))).CAst.v + +let get_intro_id = function + | IntroNaming (IntroIdentifier id) -> id + | _ -> assert false + +let rec add_intro_pattern_hyps ipat hyps = + let {CAst.loc=loc;v=ipat} = ipat in + match ipat with + | IntroNaming (IntroIdentifier id) -> + if not_section_id id then SsrHyp (loc, id) :: hyps else + hyp_err ?loc "Can't delete section hypothesis " id + | IntroAction IntroWildcard -> hyps + | IntroAction (IntroOrAndPattern (IntroOrPattern iorpat)) -> + List.fold_right (List.fold_right add_intro_pattern_hyps) iorpat hyps + | IntroAction (IntroOrAndPattern (IntroAndPattern iandpat)) -> + List.fold_right add_intro_pattern_hyps iandpat hyps + | IntroNaming IntroAnonymous -> [] + | IntroNaming (IntroFresh _) -> [] + | IntroAction (IntroRewrite _) -> hyps + | IntroAction (IntroInjection ips) -> List.fold_right add_intro_pattern_hyps ips hyps + | IntroAction (IntroApplyOn (c,pat)) -> add_intro_pattern_hyps pat hyps + | IntroForthcoming _ -> + (* As in ipat_of_intro_pattern, was unable to determine which kind + of ipat interp_introid could return [HH] *) assert false + +(* We interp the ipat using the standard ltac machinery for ids, since + * we have no clue what a name could be bound to (maybe another ipat) *) +let interp_ipat ist gl = + let ltacvar id = Id.Map.mem id ist.Tacinterp.lfun in + let rec interp = function + | IPatId id when ltacvar id -> + ipat_of_intro_pattern (interp_introid ist gl id) + | IPatId _ as x -> x + | IPatClear clr -> + let add_hyps (SsrHyp (loc, id) as hyp) hyps = + if not (ltacvar id) then hyp :: hyps else + add_intro_pattern_hyps CAst.(make ?loc (interp_introid ist gl id)) hyps in + let clr' = List.fold_right add_hyps clr [] in + check_hyps_uniq [] clr'; IPatClear clr' + | IPatCase(iorpat) -> + IPatCase(List.map (List.map interp) iorpat) + | IPatDispatch(iorpat) -> + IPatDispatch(List.map (List.map interp) iorpat) + | IPatInj iorpat -> IPatInj (List.map (List.map interp) iorpat) + | IPatAbstractVars l -> + IPatAbstractVars (List.map get_intro_id (List.map (interp_introid ist gl) l)) + | IPatView (clr,l) -> IPatView (clr,List.map (fun x -> snd(interp_ast_closure_term ist + gl x)) l) + | (IPatSimpl _ | IPatAnon _ | IPatRewrite _ | IPatNoop) as x -> x + | IPatTac _ -> assert false (*internal usage only *) + in + interp + +let interp_ipats ist gl l = project gl, List.map (interp_ipat ist gl) l + +let pushIPatRewrite = function + | pats :: orpat -> (IPatRewrite (allocc, L2R) :: pats) :: orpat + | [] -> [] + +let pushIPatNoop = function + | pats :: orpat -> (IPatNoop :: pats) :: orpat + | [] -> [] + +} + +ARGUMENT EXTEND ssripat TYPED AS ssripatrep list PRINTED BY { pr_ssripats } + INTERPRETED BY { interp_ipats } + GLOBALIZED BY { intern_ipats } + | [ "_" ] -> { [IPatAnon Drop] } + | [ "*" ] -> { [IPatAnon All] } + (* + | [ "^" "*" ] -> { [IPatFastMode] } + | [ "^" "_" ] -> { [IPatSeed `Wild] } + | [ "^_" ] -> { [IPatSeed `Wild] } + | [ "^" "?" ] -> { [IPatSeed `Anon] } + | [ "^?" ] -> { [IPatSeed `Anon] } + | [ "^" ident(id) ] -> { [IPatSeed (`Id(id,`Pre))] } + | [ "^" "~" ident(id) ] -> { [IPatSeed (`Id(id,`Post))] } + | [ "^~" ident(id) ] -> { [IPatSeed (`Id(id,`Post))] } + *) + | [ ident(id) ] -> { [IPatId id] } + | [ "?" ] -> { [IPatAnon One] } +(* TODO | [ "+" ] -> [ [IPatAnon Temporary] ] *) + | [ ssrsimpl_ne(sim) ] -> { [IPatSimpl sim] } + | [ ssrdocc(occ) "->" ] -> { match occ with + | Some [], _ -> CErrors.user_err ~loc (str"occ_switch expected") + | None, occ -> [IPatRewrite (occ, L2R)] + | Some clr, _ -> [IPatClear clr; IPatRewrite (allocc, L2R)] } + | [ ssrdocc(occ) "<-" ] -> { match occ with + | Some [], _ -> CErrors.user_err ~loc (str"occ_switch expected") + | None, occ -> [IPatRewrite (occ, R2L)] + | Some clr, _ -> [IPatClear clr; IPatRewrite (allocc, R2L)] } + | [ ssrdocc(occ) ssrfwdview(v) ] -> { match occ with + | Some [], _ -> [IPatView (true,v)] + | Some cl, _ -> check_hyps_uniq [] cl; [IPatClear cl;IPatView (false,v)] + | _ -> CErrors.user_err ~loc (str"Only identifiers are allowed here") } + | [ ssrdocc(occ) ] -> { match occ with + | Some cl, _ -> check_hyps_uniq [] cl; [IPatClear cl] + | _ -> CErrors.user_err ~loc (str"Only identifiers are allowed here") } + | [ "->" ] -> { [IPatRewrite (allocc, L2R)] } + | [ "<-" ] -> { [IPatRewrite (allocc, R2L)] } + | [ "-" ] -> { [IPatNoop] } + | [ "-/" "=" ] -> { [IPatNoop;IPatSimpl(Simpl ~-1)] } + | [ "-/=" ] -> { [IPatNoop;IPatSimpl(Simpl ~-1)] } + | [ "-/" "/" ] -> { [IPatNoop;IPatSimpl(Cut ~-1)] } + | [ "-//" ] -> { [IPatNoop;IPatSimpl(Cut ~-1)] } + | [ "-/" integer(n) "/" ] -> { [IPatNoop;IPatSimpl(Cut n)] } + | [ "-/" "/=" ] -> { [IPatNoop;IPatSimpl(SimplCut (~-1,~-1))] } + | [ "-//" "=" ] -> { [IPatNoop;IPatSimpl(SimplCut (~-1,~-1))] } + | [ "-//=" ] -> { [IPatNoop;IPatSimpl(SimplCut (~-1,~-1))] } + | [ "-/" integer(n) "/=" ] -> { [IPatNoop;IPatSimpl(SimplCut (n,~-1))] } + | [ "-/" integer(n) "/" integer (m) "=" ] -> + { [IPatNoop;IPatSimpl(SimplCut(n,m))] } + | [ ssrfwdview(v) ] -> { [IPatView (false,v)] } + | [ "[" ":" ident_list(idl) "]" ] -> { [IPatAbstractVars idl] } + | [ "[:" ident_list(idl) "]" ] -> { [IPatAbstractVars idl] } +END + +ARGUMENT EXTEND ssripats TYPED AS ssripat PRINTED BY { pr_ssripats } + | [ ssripat(i) ssripats(tl) ] -> { i @ tl } + | [ ] -> { [] } +END + +ARGUMENT EXTEND ssriorpat TYPED AS ssripat list PRINTED BY { pr_ssriorpat } +| [ ssripats(pats) "|" ssriorpat(orpat) ] -> { pats :: orpat } +| [ ssripats(pats) "|-" ">" ssriorpat(orpat) ] -> { pats :: pushIPatRewrite orpat } +| [ ssripats(pats) "|-" ssriorpat(orpat) ] -> { pats :: pushIPatNoop orpat } +| [ ssripats(pats) "|->" ssriorpat(orpat) ] -> { pats :: pushIPatRewrite orpat } +| [ ssripats(pats) "||" ssriorpat(orpat) ] -> { pats :: [] :: orpat } +| [ ssripats(pats) "|||" ssriorpat(orpat) ] -> { pats :: [] :: [] :: orpat } +| [ ssripats(pats) "||||" ssriorpat(orpat) ] -> { [pats; []; []; []] @ orpat } +| [ ssripats(pats) ] -> { [pats] } +END + +{ + +let reject_ssrhid strm = + match Util.stream_nth 0 strm with + | Tok.KEYWORD "[" -> + (match Util.stream_nth 1 strm with + | Tok.KEYWORD ":" -> raise Stream.Failure + | _ -> ()) + | _ -> () + +let test_nohidden = Pcoq.Gram.Entry.of_parser "test_ssrhid" reject_ssrhid + +} + +ARGUMENT EXTEND ssrcpat TYPED AS ssripatrep PRINTED BY { pr_ssripat } + | [ "YouShouldNotTypeThis" ssriorpat(x) ] -> { IPatCase(x) } +END + +(* Pcoq *) +GRAMMAR EXTEND Gram + GLOBAL: ssrcpat; + ssrcpat: [ + [ test_nohidden; "["; iorpat = ssriorpat; "]" -> { +(* check_no_inner_seed !@loc false iorpat; + IPatCase (understand_case_type iorpat) *) + IPatCase iorpat } +(* + | test_nohidden; "("; iorpat = ssriorpat; ")" -> +(* check_no_inner_seed !@loc false iorpat; + IPatCase (understand_case_type iorpat) *) + IPatDispatch iorpat +*) + | test_nohidden; "[="; iorpat = ssriorpat; "]" -> { +(* check_no_inner_seed !@loc false iorpat; *) + IPatInj iorpat } ]]; +END + +GRAMMAR EXTEND Gram + GLOBAL: ssripat; + ssripat: [[ pat = ssrcpat -> { [pat] } ]]; +END + +ARGUMENT EXTEND ssripats_ne TYPED AS ssripat PRINTED BY { pr_ssripats } + | [ ssripat(i) ssripats(tl) ] -> { i @ tl } + END + +(* subsets of patterns *) + +{ + +(* TODO: review what this function does, it looks suspicious *) +let check_ssrhpats loc w_binders ipats = + let err_loc s = CErrors.user_err ~loc ~hdr:"ssreflect" s in + let clr, ipats = + let rec aux clr = function + | IPatClear cl :: tl -> aux (clr @ cl) tl +(* | IPatSimpl (cl, sim) :: tl -> clr @ cl, IPatSimpl ([], sim) :: tl *) + | tl -> clr, tl + in aux [] ipats in + let simpl, ipats = + match List.rev ipats with + | IPatSimpl _ as s :: tl -> [s], List.rev tl + | _ -> [], ipats in + if simpl <> [] && not w_binders then + err_loc (str "No s-item allowed here: " ++ pr_ipats simpl); + let ipat, binders = + let rec loop ipat = function + | [] -> ipat, [] + | ( IPatId _| IPatAnon _| IPatCase _ | IPatDispatch _ | IPatRewrite _ as i) :: tl -> + if w_binders then + if simpl <> [] && tl <> [] then + err_loc(str"binders XOR s-item allowed here: "++pr_ipats(tl@simpl)) + else if not (List.for_all (function IPatId _ -> true | _ -> false) tl) + then err_loc (str "Only binders allowed here: " ++ pr_ipats tl) + else ipat @ [i], tl + else + if tl = [] then ipat @ [i], [] + else err_loc (str "No binder or s-item allowed here: " ++ pr_ipats tl) + | hd :: tl -> loop (ipat @ [hd]) tl + in loop [] ipats in + ((clr, ipat), binders), simpl + +let pr_hpats (((clr, ipat), binders), simpl) = + pr_clear mt clr ++ pr_ipats ipat ++ pr_ipats binders ++ pr_ipats simpl +let pr_ssrhpats _ _ _ = pr_hpats +let pr_ssrhpats_wtransp _ _ _ (_, x) = pr_hpats x + +} + +ARGUMENT EXTEND ssrhpats TYPED AS (((ssrclear * ssripat) * ssripat) * ssripat) +PRINTED BY { pr_ssrhpats } + | [ ssripats(i) ] -> { check_ssrhpats loc true i } +END + +ARGUMENT EXTEND ssrhpats_wtransp + TYPED AS (bool * (((ssrclear * ssripats) * ssripats) * ssripats)) + PRINTED BY { pr_ssrhpats_wtransp } + | [ ssripats(i) ] -> { false,check_ssrhpats loc true i } + | [ ssripats(i) "@" ssripats(j) ] -> { true,check_ssrhpats loc true (i @ j) } +END + +ARGUMENT EXTEND ssrhpats_nobs +TYPED AS (((ssrclear * ssripats) * ssripats) * ssripats) PRINTED BY { pr_ssrhpats } + | [ ssripats(i) ] -> { check_ssrhpats loc false i } +END + +ARGUMENT EXTEND ssrrpat TYPED AS ssripatrep PRINTED BY { pr_ssripat } + | [ "->" ] -> { IPatRewrite (allocc, L2R) } + | [ "<-" ] -> { IPatRewrite (allocc, R2L) } +END + +{ + +let pr_intros sep intrs = + if intrs = [] then mt() else sep () ++ str "=>" ++ pr_ipats intrs +let pr_ssrintros _ _ _ = pr_intros mt + +} + +ARGUMENT EXTEND ssrintros_ne TYPED AS ssripat + PRINTED BY { pr_ssrintros } + | [ "=>" ssripats_ne(pats) ] -> { pats } +(* TODO | [ "=>" ">" ssripats_ne(pats) ] -> { IPatFastMode :: pats } + | [ "=>>" ssripats_ne(pats) ] -> [ IPatFastMode :: pats ] *) +END + +ARGUMENT EXTEND ssrintros TYPED AS ssrintros_ne PRINTED BY { pr_ssrintros } + | [ ssrintros_ne(intrs) ] -> { intrs } + | [ ] -> { [] } +END + +{ + +let pr_ssrintrosarg _ _ prt (tac, ipats) = + prt tacltop tac ++ pr_intros spc ipats + +} + +ARGUMENT EXTEND ssrintrosarg TYPED AS (tactic * ssrintros) + PRINTED BY { pr_ssrintrosarg } +| [ "YouShouldNotTypeThis" ssrtacarg(arg) ssrintros_ne(ipats) ] -> { arg, ipats } +END + +TACTIC EXTEND ssrtclintros +| [ "YouShouldNotTypeThis" ssrintrosarg(arg) ] -> + { let tac, intros = arg in + ssrevaltac ist tac <*> tclIPATssr intros } +END + +{ + +(** Defined identifier *) +let pr_ssrfwdid id = pr_spc () ++ pr_id id + +let pr_ssrfwdidx _ _ _ = pr_ssrfwdid + +} + +(* We use a primitive parser for the head identifier of forward *) +(* tactis to avoid syntactic conflicts with basic Coq tactics. *) +ARGUMENT EXTEND ssrfwdid TYPED AS ident PRINTED BY { pr_ssrfwdidx } + | [ "YouShouldNotTypeThis" ] -> { anomaly "Grammar placeholder match" } +END + +{ + +let accept_ssrfwdid strm = + match stream_nth 0 strm with + | Tok.IDENT id -> accept_before_syms_or_any_id [":"; ":="; "("] strm + | _ -> raise Stream.Failure + +let test_ssrfwdid = Gram.Entry.of_parser "test_ssrfwdid" accept_ssrfwdid + +} + +GRAMMAR EXTEND Gram + GLOBAL: ssrfwdid; + ssrfwdid: [[ test_ssrfwdid; id = Prim.ident -> { id } ]]; + END + + +(* by *) +(** Tactical arguments. *) + +(* We have four kinds: simple tactics, [|]-bracketed lists, hints, and swaps *) +(* The latter two are used in forward-chaining tactics (have, suffice, wlog) *) +(* and subgoal reordering tacticals (; first & ; last), respectively. *) + +{ + +let pr_ortacs prt = + let rec pr_rec = function + | [None] -> spc() ++ str "|" ++ spc() + | None :: tacs -> spc() ++ str "|" ++ pr_rec tacs + | Some tac :: tacs -> spc() ++ str "| " ++ prt tacltop tac ++ pr_rec tacs + | [] -> mt() in + function + | [None] -> spc() + | None :: tacs -> pr_rec tacs + | Some tac :: tacs -> prt tacltop tac ++ pr_rec tacs + | [] -> mt() +let pr_ssrortacs _ _ = pr_ortacs + +} + +ARGUMENT EXTEND ssrortacs TYPED AS tactic option list PRINTED BY { pr_ssrortacs } +| [ ssrtacarg(tac) "|" ssrortacs(tacs) ] -> { Some tac :: tacs } +| [ ssrtacarg(tac) "|" ] -> { [Some tac; None] } +| [ ssrtacarg(tac) ] -> { [Some tac] } +| [ "|" ssrortacs(tacs) ] -> { None :: tacs } +| [ "|" ] -> { [None; None] } +END + +{ + +let pr_hintarg prt = function + | true, tacs -> hv 0 (str "[ " ++ pr_ortacs prt tacs ++ str " ]") + | false, [Some tac] -> prt tacltop tac + | _, _ -> mt() + +let pr_ssrhintarg _ _ = pr_hintarg + +} + +ARGUMENT EXTEND ssrhintarg TYPED AS (bool * ssrortacs) PRINTED BY { pr_ssrhintarg } +| [ "[" "]" ] -> { nullhint } +| [ "[" ssrortacs(tacs) "]" ] -> { mk_orhint tacs } +| [ ssrtacarg(arg) ] -> { mk_hint arg } +END + +ARGUMENT EXTEND ssrortacarg TYPED AS ssrhintarg PRINTED BY { pr_ssrhintarg } +| [ "[" ssrortacs(tacs) "]" ] -> { mk_orhint tacs } +END + +{ + +let pr_hint prt arg = + if arg = nohint then mt() else str "by " ++ pr_hintarg prt arg +let pr_ssrhint _ _ = pr_hint + +} + +ARGUMENT EXTEND ssrhint TYPED AS ssrhintarg PRINTED BY { pr_ssrhint } +| [ ] -> { nohint } +END +(** The "in" pseudo-tactical *) + +(* We can't make "in" into a general tactical because this would create a *) +(* crippling conflict with the ltac let .. in construct. Hence, we add *) +(* explicitly an "in" suffix to all the extended tactics for which it is *) +(* relevant (including move, case, elim) and to the extended do tactical *) +(* below, which yields a general-purpose "in" of the form do [...] in ... *) + +(* This tactical needs to come before the intro tactics because the latter *) +(* must take precautions in order not to interfere with the discharged *) +(* assumptions. This is especially difficult for discharged "let"s, which *) +(* the default simpl and unfold tactics would erase blindly. *) + +{ + +open Ssrmatching_plugin.Ssrmatching +open Ssrmatching_plugin.G_ssrmatching + +let pr_wgen = function + | (clr, Some((id,k),None)) -> spc() ++ pr_clear mt clr ++ str k ++ pr_hoi id + | (clr, Some((id,k),Some p)) -> + spc() ++ pr_clear mt clr ++ str"(" ++ str k ++ pr_hoi id ++ str ":=" ++ + pr_cpattern p ++ str ")" + | (clr, None) -> spc () ++ pr_clear mt clr +let pr_ssrwgen _ _ _ = pr_wgen + +} + +(* no globwith for char *) +ARGUMENT EXTEND ssrwgen + TYPED AS (ssrclear * ((ssrhoi_hyp * string) * cpattern option) option) + PRINTED BY { pr_ssrwgen } +| [ ssrclear_ne(clr) ] -> { clr, None } +| [ ssrhoi_hyp(hyp) ] -> { [], Some((hyp, " "), None) } +| [ "@" ssrhoi_hyp(hyp) ] -> { [], Some((hyp, "@"), None) } +| [ "(" ssrhoi_id(id) ":=" lcpattern(p) ")" ] -> + { [], Some ((id," "),Some p) } +| [ "(" ssrhoi_id(id) ")" ] -> { [], Some ((id,"("), None) } +| [ "(@" ssrhoi_id(id) ":=" lcpattern(p) ")" ] -> + { [], Some ((id,"@"),Some p) } +| [ "(" "@" ssrhoi_id(id) ":=" lcpattern(p) ")" ] -> + { [], Some ((id,"@"),Some p) } +END + +{ + +let pr_clseq = function + | InGoal | InHyps -> mt () + | InSeqGoal -> str "|- *" + | InHypsSeqGoal -> str " |- *" + | InHypsGoal -> str " *" + | InAll -> str "*" + | InHypsSeq -> str " |-" + | InAllHyps -> str "* |-" + +let wit_ssrclseq = add_genarg "ssrclseq" pr_clseq +let pr_clausehyps = pr_list pr_spc pr_wgen +let pr_ssrclausehyps _ _ _ = pr_clausehyps + +} + +ARGUMENT EXTEND ssrclausehyps +TYPED AS ssrwgen list PRINTED BY { pr_ssrclausehyps } +| [ ssrwgen(hyp) "," ssrclausehyps(hyps) ] -> { hyp :: hyps } +| [ ssrwgen(hyp) ssrclausehyps(hyps) ] -> { hyp :: hyps } +| [ ssrwgen(hyp) ] -> { [hyp] } +END + +{ + +(* type ssrclauses = ssrahyps * ssrclseq *) + +let pr_clauses (hyps, clseq) = + if clseq = InGoal then mt () + else str "in " ++ pr_clausehyps hyps ++ pr_clseq clseq +let pr_ssrclauses _ _ _ = pr_clauses + +} + +ARGUMENT EXTEND ssrclauses TYPED AS (ssrwgen list * ssrclseq) + PRINTED BY { pr_ssrclauses } + | [ "in" ssrclausehyps(hyps) "|-" "*" ] -> { hyps, InHypsSeqGoal } + | [ "in" ssrclausehyps(hyps) "|-" ] -> { hyps, InHypsSeq } + | [ "in" ssrclausehyps(hyps) "*" ] -> { hyps, InHypsGoal } + | [ "in" ssrclausehyps(hyps) ] -> { hyps, InHyps } + | [ "in" "|-" "*" ] -> { [], InSeqGoal } + | [ "in" "*" ] -> { [], InAll } + | [ "in" "*" "|-" ] -> { [], InAllHyps } + | [ ] -> { [], InGoal } +END + + +{ + +(** Definition value formatting *) + +(* We use an intermediate structure to correctly render the binder list *) +(* abbreviations. We use a list of hints to extract the binders and *) +(* base term from a term, for the two first levels of representation of *) +(* of constr terms. *) + +let pr_binder prl = function + | Bvar x -> + pr_name x + | Bdecl (xs, t) -> + str "(" ++ pr_list pr_spc pr_name xs ++ str " : " ++ prl t ++ str ")" + | Bdef (x, None, v) -> + str "(" ++ pr_name x ++ str " := " ++ prl v ++ str ")" + | Bdef (x, Some t, v) -> + str "(" ++ pr_name x ++ str " : " ++ prl t ++ + str " := " ++ prl v ++ str ")" + | Bstruct x -> + str "{struct " ++ pr_name x ++ str "}" + | Bcast t -> + str ": " ++ prl t + +let rec format_local_binders h0 bl0 = match h0, bl0 with + | BFvar :: h, CLocalAssum ([{CAst.v=x}], _, _) :: bl -> + Bvar x :: format_local_binders h bl + | BFdecl _ :: h, CLocalAssum (lxs, _, t) :: bl -> + Bdecl (List.map (fun x -> x.CAst.v) lxs, t) :: format_local_binders h bl + | BFdef :: h, CLocalDef ({CAst.v=x}, v, oty) :: bl -> + Bdef (x, oty, v) :: format_local_binders h bl + | _ -> [] + +let rec format_constr_expr h0 c0 = let open CAst in match h0, c0 with + | BFvar :: h, { v = CLambdaN ([CLocalAssum([{CAst.v=x}], _, _)], c) } -> + let bs, c' = format_constr_expr h c in + Bvar x :: bs, c' + | BFdecl _:: h, { v = CLambdaN ([CLocalAssum(lxs, _, t)], c) } -> + let bs, c' = format_constr_expr h c in + Bdecl (List.map (fun x -> x.CAst.v) lxs, t) :: bs, c' + | BFdef :: h, { v = CLetIn({CAst.v=x}, v, oty, c) } -> + let bs, c' = format_constr_expr h c in + Bdef (x, oty, v) :: bs, c' + | [BFcast], { v = CCast (c, Glob_term.CastConv t) } -> + [Bcast t], c + | BFrec (has_str, has_cast) :: h, + { v = CFix ( _, [_, (Some locn, CStructRec), bl, t, c]) } -> + let bs = format_local_binders h bl in + let bstr = if has_str then [Bstruct (Name locn.CAst.v)] else [] in + bs @ bstr @ (if has_cast then [Bcast t] else []), c + | BFrec (_, has_cast) :: h, { v = CCoFix ( _, [_, bl, t, c]) } -> + format_local_binders h bl @ (if has_cast then [Bcast t] else []), c + | _, c -> + [], c + +(** Forward chaining argument *) + +(* There are three kinds of forward definitions: *) +(* - Hint: type only, cast to Type, may have proof hint. *) +(* - Have: type option + value, no space before type *) +(* - Pose: binders + value, space before binders. *) + +let pr_fwdkind = function + | FwdHint (s,_) -> str (s ^ " ") | _ -> str " :=" ++ spc () +let pr_fwdfmt (fk, _ : ssrfwdfmt) = pr_fwdkind fk + +let wit_ssrfwdfmt = add_genarg "ssrfwdfmt" pr_fwdfmt + +(* type ssrfwd = ssrfwdfmt * ssrterm *) + +let mkFwdVal fk c = ((fk, []), c) +let mkssrFwdVal fk c = ((fk, []), (c,None)) +let dC t = Glob_term.CastConv t + +let same_ist { interp_env = x } { interp_env = y } = + match x,y with + | None, None -> true + | Some a, Some b -> a == b + | _ -> false + +let mkFwdCast fk ?loc ?c t = + let c = match c with + | None -> mkCHole loc + | Some c -> assert (same_ist t c); c.body in + ((fk, [BFcast]), + { t with annotation = `None; + body = (CAst.make ?loc @@ CCast (c, dC t.body)) }) + +let mkssrFwdCast fk loc t c = ((fk, [BFcast]), (c, Some t)) + +let mkFwdHint s t = + let loc = Constrexpr_ops.constr_loc t.body in + mkFwdCast (FwdHint (s,false)) ?loc t +let mkFwdHintNoTC s t = + let loc = Constrexpr_ops.constr_loc t.body in + mkFwdCast (FwdHint (s,true)) ?loc t + +let pr_gen_fwd prval prc prlc fk (bs, c) = + let prc s = str s ++ spc () ++ prval prc prlc c in + match fk, bs with + | FwdHint (s,_), [Bcast t] -> str s ++ spc () ++ prlc t + | FwdHint (s,_), _ -> prc (s ^ "(* typeof *)") + | FwdHave, [Bcast t] -> str ":" ++ spc () ++ prlc t ++ prc " :=" + | _, [] -> prc " :=" + | _, _ -> spc () ++ pr_list spc (pr_binder prlc) bs ++ prc " :=" + +let pr_fwd_guarded prval prval' = function +| (fk, h), c -> + pr_gen_fwd prval pr_constr_expr prl_constr_expr fk (format_constr_expr h c.body) + +let pr_unguarded prc prlc = prlc + +let pr_fwd = pr_fwd_guarded pr_unguarded pr_unguarded +let pr_ssrfwd _ _ _ = pr_fwd + +} + +ARGUMENT EXTEND ssrfwd TYPED AS (ssrfwdfmt * ast_closure_lterm) PRINTED BY { pr_ssrfwd } + | [ ":=" ast_closure_lterm(c) ] -> { mkFwdVal FwdPose c } + | [ ":" ast_closure_lterm (t) ":=" ast_closure_lterm(c) ] -> { mkFwdCast FwdPose ~loc t ~c } +END + +(** Independent parsing for binders *) + +(* The pose, pose fix, and pose cofix tactics use these internally to *) +(* parse argument fragments. *) + +{ + +let pr_ssrbvar prc _ _ v = prc v + +} + +ARGUMENT EXTEND ssrbvar TYPED AS constr PRINTED BY { pr_ssrbvar } +| [ ident(id) ] -> { mkCVar ~loc id } +| [ "_" ] -> { mkCHole (Some loc) } +END + +{ + +let bvar_lname = let open CAst in function + | { v = CRef (qid, _) } when qualid_is_ident qid -> + CAst.make ?loc:qid.CAst.loc @@ Name (qualid_basename qid) + | { loc = loc } -> CAst.make ?loc Anonymous + +let pr_ssrbinder prc _ _ (_, c) = prc c + +} + +ARGUMENT EXTEND ssrbinder TYPED AS (ssrfwdfmt * constr) PRINTED BY { pr_ssrbinder } + | [ ssrbvar(bv) ] -> + { let { CAst.loc=xloc } as x = bvar_lname bv in + (FwdPose, [BFvar]), + CAst.make ~loc @@ CLambdaN ([CLocalAssum([x],Default Explicit,mkCHole xloc)],mkCHole (Some loc)) } + | [ "(" ssrbvar(bv) ")" ] -> + { let { CAst.loc=xloc } as x = bvar_lname bv in + (FwdPose, [BFvar]), + CAst.make ~loc @@ CLambdaN ([CLocalAssum([x],Default Explicit,mkCHole xloc)],mkCHole (Some loc)) } + | [ "(" ssrbvar(bv) ":" lconstr(t) ")" ] -> + { let x = bvar_lname bv in + (FwdPose, [BFdecl 1]), + CAst.make ~loc @@ CLambdaN ([CLocalAssum([x], Default Explicit, t)], mkCHole (Some loc)) } + | [ "(" ssrbvar(bv) ne_ssrbvar_list(bvs) ":" lconstr(t) ")" ] -> + { let xs = List.map bvar_lname (bv :: bvs) in + let n = List.length xs in + (FwdPose, [BFdecl n]), + CAst.make ~loc @@ CLambdaN ([CLocalAssum (xs, Default Explicit, t)], mkCHole (Some loc)) } + | [ "(" ssrbvar(id) ":" lconstr(t) ":=" lconstr(v) ")" ] -> + { (FwdPose,[BFdef]), CAst.make ~loc @@ CLetIn (bvar_lname id, v, Some t, mkCHole (Some loc)) } + | [ "(" ssrbvar(id) ":=" lconstr(v) ")" ] -> + { (FwdPose,[BFdef]), CAst.make ~loc @@ CLetIn (bvar_lname id, v, None, mkCHole (Some loc)) } + END + +GRAMMAR EXTEND Gram + GLOBAL: ssrbinder; + ssrbinder: [ + [ ["of" -> { () } | "&" -> { () } ]; c = operconstr LEVEL "99" -> { + (FwdPose, [BFvar]), + CAst.make ~loc @@ CLambdaN ([CLocalAssum ([CAst.make ~loc Anonymous],Default Explicit,c)],mkCHole (Some loc)) } ] + ]; +END + +{ + +let rec binders_fmts = function + | ((_, h), _) :: bs -> h @ binders_fmts bs + | _ -> [] + +let push_binders c2 bs = + let loc2 = constr_loc c2 in let mkloc loc1 = Loc.merge_opt loc1 loc2 in + let open CAst in + let rec loop ty c = function + | (_, { loc = loc1; v = CLambdaN (b, _) } ) :: bs when ty -> + CAst.make ?loc:(mkloc loc1) @@ CProdN (b, loop ty c bs) + | (_, { loc = loc1; v = CLambdaN (b, _) } ) :: bs -> + CAst.make ?loc:(mkloc loc1) @@ CLambdaN (b, loop ty c bs) + | (_, { loc = loc1; v = CLetIn (x, v, oty, _) } ) :: bs -> + CAst.make ?loc:(mkloc loc1) @@ CLetIn (x, v, oty, loop ty c bs) + | [] -> c + | _ -> anomaly "binder not a lambda nor a let in" in + match c2 with + | { loc; v = CCast (ct, Glob_term.CastConv cty) } -> + CAst.make ?loc @@ (CCast (loop false ct bs, Glob_term.CastConv (loop true cty bs))) + | ct -> loop false ct bs + +let rec fix_binders = let open CAst in function + | (_, { v = CLambdaN ([CLocalAssum(xs, _, t)], _) } ) :: bs -> + CLocalAssum (xs, Default Explicit, t) :: fix_binders bs + | (_, { v = CLetIn (x, v, oty, _) } ) :: bs -> + CLocalDef (x, v, oty) :: fix_binders bs + | _ -> [] + +let pr_ssrstruct _ _ _ = function + | Some id -> str "{struct " ++ pr_id id ++ str "}" + | None -> mt () + +} + +ARGUMENT EXTEND ssrstruct TYPED AS ident option PRINTED BY { pr_ssrstruct } +| [ "{" "struct" ident(id) "}" ] -> { Some id } +| [ ] -> { None } +END + +(** The "pose" tactic *) + +(* The plain pose form. *) + +{ + +let bind_fwd bs ((fk, h), c) = + (fk,binders_fmts bs @ h), { c with body = push_binders c.body bs } + +} + +ARGUMENT EXTEND ssrposefwd TYPED AS ssrfwd PRINTED BY { pr_ssrfwd } + | [ ssrbinder_list(bs) ssrfwd(fwd) ] -> { bind_fwd bs fwd } +END + +(* The pose fix form. *) + +{ + +let pr_ssrfixfwd _ _ _ (id, fwd) = str " fix " ++ pr_id id ++ pr_fwd fwd + +let bvar_locid = function + | { CAst.v = CRef (qid, _) } when qualid_is_ident qid -> + CAst.make ?loc:qid.CAst.loc (qualid_basename qid) + | _ -> CErrors.user_err (Pp.str "Missing identifier after \"(co)fix\"") + +} + +ARGUMENT EXTEND ssrfixfwd TYPED AS (ident * ssrfwd) PRINTED BY { pr_ssrfixfwd } + | [ "fix" ssrbvar(bv) ssrbinder_list(bs) ssrstruct(sid) ssrfwd(fwd) ] -> + { let { CAst.v=id } as lid = bvar_locid bv in + let (fk, h), ac = fwd in + let c = ac.body in + let has_cast, t', c' = match format_constr_expr h c with + | [Bcast t'], c' -> true, t', c' + | _ -> false, mkCHole (constr_loc c), c in + let lb = fix_binders bs in + let has_struct, i = + let rec loop = function + | {CAst.loc=l'; v=Name id'} :: _ when Option.equal Id.equal sid (Some id') -> + true, CAst.make ?loc:l' id' + | [{CAst.loc=l';v=Name id'}] when sid = None -> + false, CAst.make ?loc:l' id' + | _ :: bn -> loop bn + | [] -> CErrors.user_err (Pp.str "Bad structural argument") in + loop (names_of_local_assums lb) in + let h' = BFrec (has_struct, has_cast) :: binders_fmts bs in + let fix = CAst.make ~loc @@ CFix (lid, [lid, (Some i, CStructRec), lb, t', c']) in + id, ((fk, h'), { ac with body = fix }) } +END + + +(* The pose cofix form. *) + +{ + +let pr_ssrcofixfwd _ _ _ (id, fwd) = str " cofix " ++ pr_id id ++ pr_fwd fwd + +} + +ARGUMENT EXTEND ssrcofixfwd TYPED AS ssrfixfwd PRINTED BY { pr_ssrcofixfwd } + | [ "cofix" ssrbvar(bv) ssrbinder_list(bs) ssrfwd(fwd) ] -> + { let { CAst.v=id } as lid = bvar_locid bv in + let (fk, h), ac = fwd in + let c = ac.body in + let has_cast, t', c' = match format_constr_expr h c with + | [Bcast t'], c' -> true, t', c' + | _ -> false, mkCHole (constr_loc c), c in + let h' = BFrec (false, has_cast) :: binders_fmts bs in + let cofix = CAst.make ~loc @@ CCoFix (lid, [lid, fix_binders bs, t', c']) in + id, ((fk, h'), { ac with body = cofix }) + } +END + +{ + +(* This does not print the type, it should be fixed... *) +let pr_ssrsetfwd _ _ _ (((fk,_),(t,_)), docc) = + pr_gen_fwd (fun _ _ -> pr_cpattern) + (fun _ -> mt()) (fun _ -> mt()) fk ([Bcast ()],t) + +} + +ARGUMENT EXTEND ssrsetfwd +TYPED AS ((ssrfwdfmt * (lcpattern * ast_closure_lterm option)) * ssrdocc) +PRINTED BY { pr_ssrsetfwd } +| [ ":" ast_closure_lterm(t) ":=" "{" ssrocc(occ) "}" cpattern(c) ] -> + { mkssrFwdCast FwdPose loc t c, mkocc occ } +| [ ":" ast_closure_lterm(t) ":=" lcpattern(c) ] -> + { mkssrFwdCast FwdPose loc t c, nodocc } +| [ ":=" "{" ssrocc(occ) "}" cpattern(c) ] -> + { mkssrFwdVal FwdPose c, mkocc occ } +| [ ":=" lcpattern(c) ] -> { mkssrFwdVal FwdPose c, nodocc } +END + +{ + +let pr_ssrhavefwd _ _ prt (fwd, hint) = pr_fwd fwd ++ pr_hint prt hint + +} + +ARGUMENT EXTEND ssrhavefwd TYPED AS (ssrfwd * ssrhint) PRINTED BY { pr_ssrhavefwd } +| [ ":" ast_closure_lterm(t) ssrhint(hint) ] -> { mkFwdHint ":" t, hint } +| [ ":" ast_closure_lterm(t) ":=" ast_closure_lterm(c) ] -> { mkFwdCast FwdHave ~loc t ~c, nohint } +| [ ":" ast_closure_lterm(t) ":=" ] -> { mkFwdHintNoTC ":" t, nohint } +| [ ":=" ast_closure_lterm(c) ] -> { mkFwdVal FwdHave c, nohint } +END + +{ + +let intro_id_to_binder = List.map (function + | IPatId id -> + let { CAst.loc=xloc } as x = bvar_lname (mkCVar id) in + (FwdPose, [BFvar]), + CAst.make @@ CLambdaN ([CLocalAssum([x], Default Explicit, mkCHole xloc)], + mkCHole None) + | _ -> anomaly "non-id accepted as binder") + +let binder_to_intro_id = CAst.(List.map (function + | (FwdPose, [BFvar]), { v = CLambdaN ([CLocalAssum(ids,_,_)],_) } + | (FwdPose, [BFdecl _]), { v = CLambdaN ([CLocalAssum(ids,_,_)],_) } -> + List.map (function {v=Name id} -> IPatId id | _ -> IPatAnon One) ids + | (FwdPose, [BFdef]), { v = CLetIn ({v=Name id},_,_,_) } -> [IPatId id] + | (FwdPose, [BFdef]), { v = CLetIn ({v=Anonymous},_,_,_) } -> [IPatAnon One] + | _ -> anomaly "ssrbinder is not a binder")) + +let pr_ssrhavefwdwbinders _ _ prt (tr,((hpats, (fwd, hint)))) = + pr_hpats hpats ++ pr_fwd fwd ++ pr_hint prt hint + +} + +ARGUMENT EXTEND ssrhavefwdwbinders + TYPED AS (bool * (ssrhpats * (ssrfwd * ssrhint))) + PRINTED BY { pr_ssrhavefwdwbinders } +| [ ssrhpats_wtransp(trpats) ssrbinder_list(bs) ssrhavefwd(fwd) ] -> + { let tr, pats = trpats in + let ((clr, pats), binders), simpl = pats in + let allbs = intro_id_to_binder binders @ bs in + let allbinders = binders @ List.flatten (binder_to_intro_id bs) in + let hint = bind_fwd allbs (fst fwd), snd fwd in + tr, ((((clr, pats), allbinders), simpl), hint) } +END + +{ + +let pr_ssrdoarg prc _ prt (((n, m), tac), clauses) = + pr_index n ++ pr_mmod m ++ pr_hintarg prt tac ++ pr_clauses clauses + +} + +ARGUMENT EXTEND ssrdoarg + TYPED AS (((ssrindex * ssrmmod) * ssrhintarg) * ssrclauses) + PRINTED BY { pr_ssrdoarg } +| [ "YouShouldNotTypeThis" ] -> { anomaly "Grammar placeholder match" } +END + +{ + +(* type ssrseqarg = ssrindex * (ssrtacarg * ssrtac option) *) + +let pr_seqtacarg prt = function + | (is_first, []), _ -> str (if is_first then "first" else "last") + | tac, Some dtac -> + hv 0 (pr_hintarg prt tac ++ spc() ++ str "|| " ++ prt tacltop dtac) + | tac, _ -> pr_hintarg prt tac + +let pr_ssrseqarg _ _ prt = function + | ArgArg 0, tac -> pr_seqtacarg prt tac + | i, tac -> pr_index i ++ str " " ++ pr_seqtacarg prt tac + +} + +(* We must parse the index separately to resolve the conflict with *) +(* an unindexed tactic. *) +ARGUMENT EXTEND ssrseqarg TYPED AS (ssrindex * (ssrhintarg * tactic option)) + PRINTED BY { pr_ssrseqarg } +| [ "YouShouldNotTypeThis" ] -> { anomaly "Grammar placeholder match" } +END + +{ + +let sq_brace_tacnames = + ["first"; "solve"; "do"; "rewrite"; "have"; "suffices"; "wlog"] + (* "by" is a keyword *) +let accept_ssrseqvar strm = + match stream_nth 0 strm with + | Tok.IDENT id when not (List.mem id sq_brace_tacnames) -> + accept_before_syms_or_ids ["["] ["first";"last"] strm + | _ -> raise Stream.Failure + +let test_ssrseqvar = Gram.Entry.of_parser "test_ssrseqvar" accept_ssrseqvar + +let swaptacarg (loc, b) = (b, []), Some (TacId []) + +let check_seqtacarg dir arg = match snd arg, dir with + | ((true, []), Some (TacAtom (loc, _))), L2R -> + CErrors.user_err ?loc (str "expected \"last\"") + | ((false, []), Some (TacAtom (loc, _))), R2L -> + CErrors.user_err ?loc (str "expected \"first\"") + | _, _ -> arg + +let ssrorelse = Entry.create "ssrorelse" + +} + +GRAMMAR EXTEND Gram + GLOBAL: ssrorelse ssrseqarg; + ssrseqidx: [ + [ test_ssrseqvar; id = Prim.ident -> { ArgVar (CAst.make ~loc id) } + | n = Prim.natural -> { ArgArg (check_index ~loc n) } + ] ]; + ssrswap: [[ IDENT "first" -> { loc, true } | IDENT "last" -> { loc, false } ]]; + ssrorelse: [[ "||"; tac = tactic_expr LEVEL "2" -> { tac } ]]; + ssrseqarg: [ + [ arg = ssrswap -> { noindex, swaptacarg arg } + | i = ssrseqidx; tac = ssrortacarg; def = OPT ssrorelse -> { i, (tac, def) } + | i = ssrseqidx; arg = ssrswap -> { i, swaptacarg arg } + | tac = tactic_expr LEVEL "3" -> { noindex, (mk_hint tac, None) } + ] ]; +END + +{ + +let tactic_expr = Pltac.tactic_expr + +} + +(** 1. Utilities *) + +(** Tactic-level diagnosis *) + +(* debug *) + +{ + +(* Let's play with the new proof engine API *) +let old_tac = V82.tactic + +} + +(** Name generation *) + +(* Since Coq now does repeated internal checks of its external lexical *) +(* rules, we now need to carve ssreflect reserved identifiers out of *) +(* out of the user namespace. We use identifiers of the form _id_ for *) +(* this purpose, e.g., we "anonymize" an identifier id as _id_, adding *) +(* an extra leading _ if this might clash with an internal identifier. *) +(* We check for ssreflect identifiers in the ident grammar rule; *) +(* when the ssreflect Module is present this is normally an error, *) +(* but we provide a compatibility flag to reduce this to a warning. *) + +{ + +let ssr_reserved_ids = Summary.ref ~name:"SSR:idents" true + +let _ = + Goptions.declare_bool_option + { Goptions.optname = "ssreflect identifiers"; + Goptions.optkey = ["SsrIdents"]; + Goptions.optdepr = false; + Goptions.optread = (fun _ -> !ssr_reserved_ids); + Goptions.optwrite = (fun b -> ssr_reserved_ids := b) + } + +let is_ssr_reserved s = + let n = String.length s in n > 2 && s.[0] = '_' && s.[n - 1] = '_' + +let ssr_id_of_string loc s = + if is_ssr_reserved s && is_ssr_loaded () then begin + if !ssr_reserved_ids then + CErrors.user_err ~loc (str ("The identifier " ^ s ^ " is reserved.")) + else if is_internal_name s then + Feedback.msg_warning (str ("Conflict between " ^ s ^ " and ssreflect internal names.")) + else Feedback.msg_warning (str ( + "The name " ^ s ^ " fits the _xxx_ format used for anonymous variables.\n" + ^ "Scripts with explicit references to anonymous variables are fragile.")) + end; Id.of_string s + +let ssr_null_entry = Gram.Entry.of_parser "ssr_null" (fun _ -> ()) + +} + +GRAMMAR EXTEND Gram + GLOBAL: Prim.ident; + Prim.ident: [[ s = IDENT; ssr_null_entry -> { ssr_id_of_string loc s } ]]; +END + +{ + +let perm_tag = "_perm_Hyp_" +let _ = add_internal_name (is_tagged perm_tag) + +} + +(* We must not anonymize context names discharged by the "in" tactical. *) + +(** Tactical extensions. *) + +(* The TACTIC EXTEND facility can't be used for defining new user *) +(* tacticals, because: *) +(* - the concrete syntax must start with a fixed string *) +(* We use the following workaround: *) +(* - We use the (unparsable) "YouShouldNotTypeThis" token for tacticals that *) +(* don't start with a token, then redefine the grammar and *) +(* printer using GEXTEND and set_pr_ssrtac, respectively. *) + +{ + +type ssrargfmt = ArgSsr of string | ArgSep of string + +let ssrtac_name name = { + mltac_plugin = "ssreflect_plugin"; + mltac_tactic = "ssr" ^ name; +} + +let ssrtac_entry name n = { + mltac_name = ssrtac_name name; + mltac_index = n; +} + +let set_pr_ssrtac name prec afmt = (* FIXME *) () (* + let fmt = List.map (function + | ArgSep s -> Egramml.GramTerminal s + | ArgSsr s -> Egramml.GramTerminal s + | ArgCoq at -> Egramml.GramTerminal "COQ_ARG") afmt in + let tacname = ssrtac_name name in () *) + +let ssrtac_atom ?loc name args = TacML (Loc.tag ?loc (ssrtac_entry name 0, args)) +let ssrtac_expr ?loc name args = ssrtac_atom ?loc name args + +let tclintros_expr ?loc tac ipats = + let args = [Tacexpr.TacGeneric (in_gen (rawwit wit_ssrintrosarg) (tac, ipats))] in + ssrtac_expr ?loc "tclintros" args + +} + +GRAMMAR EXTEND Gram + GLOBAL: tactic_expr; + tactic_expr: LEVEL "1" [ RIGHTA + [ tac = tactic_expr; intros = ssrintros_ne -> { tclintros_expr ~loc tac intros } + ] ]; +END + + +(** Bracketing tactical *) + +(* The tactic pretty-printer doesn't know that some extended tactics *) +(* are actually tacticals. To prevent it from improperly removing *) +(* parentheses we override the parsing rule for bracketed tactic *) +(* expressions so that the pretty-print always reflects the input. *) +(* (Removing user-specified parentheses is dubious anyway). *) + +GRAMMAR EXTEND Gram + GLOBAL: tactic_expr; + ssrparentacarg: [[ "("; tac = tactic_expr; ")" -> { Loc.tag ~loc (Tacexp tac) } ]]; + tactic_expr: LEVEL "0" [[ arg = ssrparentacarg -> { TacArg arg } ]]; +END + +(** The internal "done" and "ssrautoprop" tactics. *) + +(* For additional flexibility, "done" and "ssrautoprop" are *) +(* defined in Ltac. *) +(* Although we provide a default definition in ssreflect, *) +(* we look up the definition dynamically at each call point, *) +(* to allow for user extensions. "ssrautoprop" defaults to *) +(* trivial. *) + +{ + +let ssrautoprop gl = + try + let tacname = + try Tacenv.locate_tactic (qualid_of_ident (Id.of_string "ssrautoprop")) + with Not_found -> Tacenv.locate_tactic (ssrqid "ssrautoprop") in + let tacexpr = Loc.tag @@ Tacexpr.Reference (ArgArg (Loc.tag @@ tacname)) in + V82.of_tactic (eval_tactic (Tacexpr.TacArg tacexpr)) gl + with Not_found -> V82.of_tactic (Auto.full_trivial []) gl + +let () = ssrautoprop_tac := ssrautoprop + +let tclBY tac = Tacticals.tclTHEN tac (donetac ~-1) + +(** Tactical arguments. *) + +(* We have four kinds: simple tactics, [|]-bracketed lists, hints, and swaps *) +(* The latter two are used in forward-chaining tactics (have, suffice, wlog) *) +(* and subgoal reordering tacticals (; first & ; last), respectively. *) + +(* Force use of the tactic_expr parsing entry, to rule out tick marks. *) + +(** The "by" tactical. *) + + +open Ssrfwd + +} + +TACTIC EXTEND ssrtclby +| [ "by" ssrhintarg(tac) ] -> { V82.tactic (hinttac ist true tac) } +END + +(* We can't parse "by" in ARGUMENT EXTEND because it will only be made *) +(* into a keyword in ssreflect.v; so we anticipate this in GEXTEND. *) + +GRAMMAR EXTEND Gram + GLOBAL: ssrhint simple_tactic; + ssrhint: [[ "by"; arg = ssrhintarg -> { arg } ]]; +END + +(** The "do" tactical. ********************************************************) + +(* +type ssrdoarg = ((ssrindex * ssrmmod) * ssrhint) * ssrclauses +*) +TACTIC EXTEND ssrtcldo +| [ "YouShouldNotTypeThis" "do" ssrdoarg(arg) ] -> { V82.tactic (ssrdotac ist arg) } +END + +{ + +let _ = set_pr_ssrtac "tcldo" 3 [ArgSep "do "; ArgSsr "doarg"] + +let ssrdotac_expr ?loc n m tac clauses = + let arg = ((n, m), tac), clauses in + ssrtac_expr ?loc "tcldo" [Tacexpr.TacGeneric (in_gen (rawwit wit_ssrdoarg) arg)] + +} + +GRAMMAR EXTEND Gram + GLOBAL: tactic_expr; + ssrdotac: [ + [ tac = tactic_expr LEVEL "3" -> { mk_hint tac } + | tacs = ssrortacarg -> { tacs } + ] ]; + tactic_expr: LEVEL "3" [ RIGHTA + [ IDENT "do"; m = ssrmmod; tac = ssrdotac; clauses = ssrclauses -> + { ssrdotac_expr ~loc noindex m tac clauses } + | IDENT "do"; tac = ssrortacarg; clauses = ssrclauses -> + { ssrdotac_expr ~loc noindex Once tac clauses } + | IDENT "do"; n = int_or_var; m = ssrmmod; + tac = ssrdotac; clauses = ssrclauses -> + { ssrdotac_expr ~loc (mk_index ~loc n) m tac clauses } + ] ]; +END + +{ + +(* We can't actually parse the direction separately because this *) +(* would introduce conflicts with the basic ltac syntax. *) +let pr_ssrseqdir _ _ _ = function + | L2R -> str ";" ++ spc () ++ str "first " + | R2L -> str ";" ++ spc () ++ str "last " + +} + +ARGUMENT EXTEND ssrseqdir TYPED AS ssrdir PRINTED BY { pr_ssrseqdir } +| [ "YouShouldNotTypeThis" ] -> { anomaly "Grammar placeholder match" } +END + +TACTIC EXTEND ssrtclseq +| [ "YouShouldNotTypeThis" ssrtclarg(tac) ssrseqdir(dir) ssrseqarg(arg) ] -> + { V82.tactic (tclSEQAT ist tac dir arg) } +END + +{ + +let _ = set_pr_ssrtac "tclseq" 5 [ArgSsr "tclarg"; ArgSsr "seqdir"; ArgSsr "seqarg"] + +let tclseq_expr ?loc tac dir arg = + let arg1 = in_gen (rawwit wit_ssrtclarg) tac in + let arg2 = in_gen (rawwit wit_ssrseqdir) dir in + let arg3 = in_gen (rawwit wit_ssrseqarg) (check_seqtacarg dir arg) in + ssrtac_expr ?loc "tclseq" (List.map (fun x -> Tacexpr.TacGeneric x) [arg1; arg2; arg3]) + +} + +GRAMMAR EXTEND Gram + GLOBAL: tactic_expr; + ssr_first: [ + [ tac = ssr_first; ipats = ssrintros_ne -> { tclintros_expr ~loc tac ipats } + | "["; tacl = LIST0 tactic_expr SEP "|"; "]" -> { TacFirst tacl } + ] ]; + ssr_first_else: [ + [ tac1 = ssr_first; tac2 = ssrorelse -> { TacOrelse (tac1, tac2) } + | tac = ssr_first -> { tac } ]]; + tactic_expr: LEVEL "4" [ LEFTA + [ tac1 = tactic_expr; ";"; IDENT "first"; tac2 = ssr_first_else -> + { TacThen (tac1, tac2) } + | tac = tactic_expr; ";"; IDENT "first"; arg = ssrseqarg -> + { tclseq_expr ~loc tac L2R arg } + | tac = tactic_expr; ";"; IDENT "last"; arg = ssrseqarg -> + { tclseq_expr ~loc tac R2L arg } + ] ]; +END + +(** 5. Bookkeeping tactics (clear, move, case, elim) *) + +(** Generalization (discharge) item *) + +(* An item is a switch + term pair. *) + +(* type ssrgen = ssrdocc * ssrterm *) + +{ + +let pr_gen (docc, dt) = pr_docc docc ++ pr_cpattern dt + +let pr_ssrgen _ _ _ = pr_gen + +} + +ARGUMENT EXTEND ssrgen TYPED AS (ssrdocc * cpattern) PRINTED BY { pr_ssrgen } +| [ ssrdocc(docc) cpattern(dt) ] -> { + match docc with + | Some [], _ -> CErrors.user_err ~loc (str"Clear flag {} not allowed here") + | _ -> docc, dt } +| [ cpattern(dt) ] -> { nodocc, dt } +END + +{ + +let has_occ ((_, occ), _) = occ <> None + +(** Generalization (discharge) sequence *) + +(* A discharge sequence is represented as a list of up to two *) +(* lists of d-items, plus an ident list set (the possibly empty *) +(* final clear switch). The main list is empty iff the command *) +(* is defective, and has length two if there is a sequence of *) +(* dependent terms (and in that case it is the first of the two *) +(* lists). Thus, the first of the two lists is never empty. *) + +(* type ssrgens = ssrgen list *) +(* type ssrdgens = ssrgens list * ssrclear *) + +let gens_sep = function [], [] -> mt | _ -> spc + +let pr_dgens pr_gen (gensl, clr) = + let prgens s gens = str s ++ pr_list spc pr_gen gens in + let prdeps deps = prgens ": " deps ++ spc () ++ str "/" in + match gensl with + | [deps; []] -> prdeps deps ++ pr_clear pr_spc clr + | [deps; gens] -> prdeps deps ++ prgens " " gens ++ pr_clear spc clr + | [gens] -> prgens ": " gens ++ pr_clear spc clr + | _ -> pr_clear pr_spc clr + +let pr_ssrdgens _ _ _ = pr_dgens pr_gen + +let cons_gen gen = function + | gens :: gensl, clr -> (gen :: gens) :: gensl, clr + | _ -> anomaly "missing gen list" + +let cons_dep (gensl, clr) = + if List.length gensl = 1 then ([] :: gensl, clr) else + CErrors.user_err (Pp.str "multiple dependents switches '/'") + +} + +ARGUMENT EXTEND ssrdgens_tl TYPED AS (ssrgen list list * ssrclear) + PRINTED BY { pr_ssrdgens } +| [ "{" ne_ssrhyp_list(clr) "}" cpattern(dt) ssrdgens_tl(dgens) ] -> + { cons_gen (mkclr clr, dt) dgens } +| [ "{" ne_ssrhyp_list(clr) "}" ] -> + { [[]], clr } +| [ "{" ssrocc(occ) "}" cpattern(dt) ssrdgens_tl(dgens) ] -> + { cons_gen (mkocc occ, dt) dgens } +| [ "/" ssrdgens_tl(dgens) ] -> + { cons_dep dgens } +| [ cpattern(dt) ssrdgens_tl(dgens) ] -> + { cons_gen (nodocc, dt) dgens } +| [ ] -> + { [[]], [] } +END + +ARGUMENT EXTEND ssrdgens TYPED AS ssrdgens_tl PRINTED BY { pr_ssrdgens } +| [ ":" ssrgen(gen) ssrdgens_tl(dgens) ] -> { cons_gen gen dgens } +END + +(** Equations *) + +(* argument *) + +{ + +let pr_eqid = function Some pat -> str " " ++ pr_ipat pat | None -> mt () +let pr_ssreqid _ _ _ = pr_eqid + +} + +(* We must use primitive parsing here to avoid conflicts with the *) +(* basic move, case, and elim tactics. *) +ARGUMENT EXTEND ssreqid TYPED AS ssripatrep option PRINTED BY { pr_ssreqid } +| [ "YouShouldNotTypeThis" ] -> { anomaly "Grammar placeholder match" } +END + +{ + +let accept_ssreqid strm = + match Util.stream_nth 0 strm with + | Tok.IDENT _ -> accept_before_syms [":"] strm + | Tok.KEYWORD ":" -> () + | Tok.KEYWORD pat when List.mem pat ["_"; "?"; "->"; "<-"] -> + accept_before_syms [":"] strm + | _ -> raise Stream.Failure + +let test_ssreqid = Gram.Entry.of_parser "test_ssreqid" accept_ssreqid + +} + +GRAMMAR EXTEND Gram + GLOBAL: ssreqid; + ssreqpat: [ + [ id = Prim.ident -> { IPatId id } + | "_" -> { IPatAnon Drop } + | "?" -> { IPatAnon One } + | occ = ssrdocc; "->" -> { match occ with + | None, occ -> IPatRewrite (occ, L2R) + | _ -> CErrors.user_err ~loc (str"Only occurrences are allowed here") } + | occ = ssrdocc; "<-" -> { match occ with + | None, occ -> IPatRewrite (occ, R2L) + | _ -> CErrors.user_err ~loc (str "Only occurrences are allowed here") } + | "->" -> { IPatRewrite (allocc, L2R) } + | "<-" -> { IPatRewrite (allocc, R2L) } + ]]; + ssreqid: [ + [ test_ssreqid; pat = ssreqpat -> { Some pat } + | test_ssreqid -> { None } + ]]; +END + +(** Bookkeeping (discharge-intro) argument *) + +(* Since all bookkeeping ssr commands have the same discharge-intro *) +(* argument format we use a single grammar entry point to parse them. *) +(* the entry point parses only non-empty arguments to avoid conflicts *) +(* with the basic Coq tactics. *) + +(* type ssrarg = ssrbwdview * (ssreqid * (ssrdgens * ssripats)) *) + +{ + +let pr_ssrarg _ _ _ (view, (eqid, (dgens, ipats))) = + let pri = pr_intros (gens_sep dgens) in + pr_view2 view ++ pr_eqid eqid ++ pr_dgens pr_gen dgens ++ pri ipats + +} + +ARGUMENT EXTEND ssrarg TYPED AS (ssrfwdview * (ssreqid * (ssrdgens * ssrintros))) + PRINTED BY { pr_ssrarg } +| [ ssrfwdview(view) ssreqid(eqid) ssrdgens(dgens) ssrintros(ipats) ] -> + { view, (eqid, (dgens, ipats)) } +| [ ssrfwdview(view) ssrclear(clr) ssrintros(ipats) ] -> + { view, (None, (([], clr), ipats)) } +| [ ssreqid(eqid) ssrdgens(dgens) ssrintros(ipats) ] -> + { [], (eqid, (dgens, ipats)) } +| [ ssrclear_ne(clr) ssrintros(ipats) ] -> + { [], (None, (([], clr), ipats)) } +| [ ssrintros_ne(ipats) ] -> + { [], (None, (([], []), ipats)) } +END + +(** The "clear" tactic *) + +(* We just add a numeric version that clears the n top assumptions. *) + +TACTIC EXTEND ssrclear + | [ "clear" natural(n) ] -> { tclIPAT (List.init n (fun _ -> IPatAnon Drop)) } +END + +(** The "move" tactic *) + +{ + +(* TODO: review this, in particular the => _ and => [] cases *) +let rec improper_intros = function + | IPatSimpl _ :: ipats -> improper_intros ipats + | (IPatId _ | IPatAnon _ | IPatCase _ | IPatDispatch _) :: _ -> false + | _ -> true (* FIXME *) + +let check_movearg = function + | view, (eqid, _) when view <> [] && eqid <> None -> + CErrors.user_err (Pp.str "incompatible view and equation in move tactic") + | view, (_, (([gen :: _], _), _)) when view <> [] && has_occ gen -> + CErrors.user_err (Pp.str "incompatible view and occurrence switch in move tactic") + | _, (_, ((dgens, _), _)) when List.length dgens > 1 -> + CErrors.user_err (Pp.str "dependents switch `/' in move tactic") + | _, (eqid, (_, ipats)) when eqid <> None && improper_intros ipats -> + CErrors.user_err (Pp.str "no proper intro pattern for equation in move tactic") + | arg -> arg + +} + +ARGUMENT EXTEND ssrmovearg TYPED AS ssrarg PRINTED BY { pr_ssrarg } +| [ ssrarg(arg) ] -> { check_movearg arg } +END + +{ + +let movearg_of_parsed_movearg (v,(eq,(dg,ip))) = + (v,(eq,(ssrdgens_of_parsed_dgens dg,ip))) + +} + +TACTIC EXTEND ssrmove +| [ "move" ssrmovearg(arg) ssrrpat(pat) ] -> + { ssrmovetac (movearg_of_parsed_movearg arg) <*> tclIPAT [pat] } +| [ "move" ssrmovearg(arg) ssrclauses(clauses) ] -> + { tclCLAUSES (ssrmovetac (movearg_of_parsed_movearg arg)) clauses } +| [ "move" ssrrpat(pat) ] -> { tclIPAT [pat] } +| [ "move" ] -> { ssrsmovetac } +END + +{ + +let check_casearg = function +| view, (_, (([_; gen :: _], _), _)) when view <> [] && has_occ gen -> + CErrors.user_err (Pp.str "incompatible view and occurrence switch in dependent case tactic") +| arg -> arg + +} + +ARGUMENT EXTEND ssrcasearg TYPED AS ssrarg PRINTED BY { pr_ssrarg } +| [ ssrarg(arg) ] -> { check_casearg arg } +END + +TACTIC EXTEND ssrcase +| [ "case" ssrcasearg(arg) ssrclauses(clauses) ] -> + { tclCLAUSES (ssrcasetac (movearg_of_parsed_movearg arg)) clauses } +| [ "case" ] -> { ssrscasetoptac } +END + +(** The "elim" tactic *) + +TACTIC EXTEND ssrelim +| [ "elim" ssrarg(arg) ssrclauses(clauses) ] -> + { tclCLAUSES (ssrelimtac (movearg_of_parsed_movearg arg)) clauses } +| [ "elim" ] -> { ssrselimtoptac } +END + +(** 6. Backward chaining tactics: apply, exact, congr. *) + +(** The "apply" tactic *) + +{ + +let pr_agen (docc, dt) = pr_docc docc ++ pr_term dt +let pr_ssragen _ _ _ = pr_agen +let pr_ssragens _ _ _ = pr_dgens pr_agen + +} + +ARGUMENT EXTEND ssragen TYPED AS (ssrdocc * ssrterm) PRINTED BY { pr_ssragen } +| [ "{" ne_ssrhyp_list(clr) "}" ssrterm(dt) ] -> { mkclr clr, dt } +| [ ssrterm(dt) ] -> { nodocc, dt } +END + +ARGUMENT EXTEND ssragens TYPED AS (ssragen list list * ssrclear) +PRINTED BY { pr_ssragens } +| [ "{" ne_ssrhyp_list(clr) "}" ssrterm(dt) ssragens(agens) ] -> + { cons_gen (mkclr clr, dt) agens } +| [ "{" ne_ssrhyp_list(clr) "}" ] -> { [[]], clr} +| [ ssrterm(dt) ssragens(agens) ] -> + { cons_gen (nodocc, dt) agens } +| [ ] -> { [[]], [] } +END + +{ + +let mk_applyarg views agens intros = views, (agens, intros) + +let pr_ssraarg _ _ _ (view, (dgens, ipats)) = + let pri = pr_intros (gens_sep dgens) in + pr_view view ++ pr_dgens pr_agen dgens ++ pri ipats + +} + +ARGUMENT EXTEND ssrapplyarg +TYPED AS (ssrbwdview * (ssragens * ssrintros)) +PRINTED BY { pr_ssraarg } +| [ ":" ssragen(gen) ssragens(dgens) ssrintros(intros) ] -> + { mk_applyarg [] (cons_gen gen dgens) intros } +| [ ssrclear_ne(clr) ssrintros(intros) ] -> + { mk_applyarg [] ([], clr) intros } +| [ ssrintros_ne(intros) ] -> + { mk_applyarg [] ([], []) intros } +| [ ssrbwdview(view) ":" ssragen(gen) ssragens(dgens) ssrintros(intros) ] -> + { mk_applyarg view (cons_gen gen dgens) intros } +| [ ssrbwdview(view) ssrclear(clr) ssrintros(intros) ] -> + { mk_applyarg view ([], clr) intros } + END + +TACTIC EXTEND ssrapply +| [ "apply" ssrapplyarg(arg) ] -> { + let views, (gens_clr, intros) = arg in + inner_ssrapplytac views gens_clr ist <*> tclIPATssr intros } +| [ "apply" ] -> { apply_top_tac } +END + +(** The "exact" tactic *) + +{ + +let mk_exactarg views dgens = mk_applyarg views dgens [] + +} + +ARGUMENT EXTEND ssrexactarg TYPED AS ssrapplyarg PRINTED BY { pr_ssraarg } +| [ ":" ssragen(gen) ssragens(dgens) ] -> + { mk_exactarg [] (cons_gen gen dgens) } +| [ ssrbwdview(view) ssrclear(clr) ] -> + { mk_exactarg view ([], clr) } +| [ ssrclear_ne(clr) ] -> + { mk_exactarg [] ([], clr) } +END + +{ + +let vmexacttac pf = + Goal.enter begin fun gl -> + exact_no_check (EConstr.mkCast (pf, _vmcast, Tacmach.New.pf_concl gl)) + end + +} + +TACTIC EXTEND ssrexact +| [ "exact" ssrexactarg(arg) ] -> { + let views, (gens_clr, _) = arg in + V82.tactic (tclBY (V82.of_tactic (inner_ssrapplytac views gens_clr ist))) } +| [ "exact" ] -> { + V82.tactic (Tacticals.tclORELSE (donetac ~-1) (tclBY (V82.of_tactic apply_top_tac))) } +| [ "exact" "<:" lconstr(pf) ] -> { vmexacttac pf } +END + +(** The "congr" tactic *) + +(* type ssrcongrarg = open_constr * (int * constr) *) + +{ + +let pr_ssrcongrarg _ _ _ ((n, f), dgens) = + (if n <= 0 then mt () else str " " ++ int n) ++ + str " " ++ pr_term f ++ pr_dgens pr_gen dgens + +} + +ARGUMENT EXTEND ssrcongrarg TYPED AS ((int * ssrterm) * ssrdgens) + PRINTED BY { pr_ssrcongrarg } +| [ natural(n) constr(c) ssrdgens(dgens) ] -> { (n, mk_term xNoFlag c), dgens } +| [ natural(n) constr(c) ] -> { (n, mk_term xNoFlag c),([[]],[]) } +| [ constr(c) ssrdgens(dgens) ] -> { (0, mk_term xNoFlag c), dgens } +| [ constr(c) ] -> { (0, mk_term xNoFlag c), ([[]],[]) } +END + + + +TACTIC EXTEND ssrcongr +| [ "congr" ssrcongrarg(arg) ] -> +{ let arg, dgens = arg in + V82.tactic begin + match dgens with + | [gens], clr -> Tacticals.tclTHEN (genstac (gens,clr)) (newssrcongrtac arg ist) + | _ -> errorstrm (str"Dependent family abstractions not allowed in congr") + end } +END + +(** 7. Rewriting tactics (rewrite, unlock) *) + +(** Coq rewrite compatibility flag *) + +(** Rewrite clear/occ switches *) + +{ + +let pr_rwocc = function + | None, None -> mt () + | None, occ -> pr_occ occ + | Some clr, _ -> pr_clear_ne clr + +let pr_ssrrwocc _ _ _ = pr_rwocc + +} + +ARGUMENT EXTEND ssrrwocc TYPED AS ssrdocc PRINTED BY { pr_ssrrwocc } +| [ "{" ssrhyp_list(clr) "}" ] -> { mkclr clr } +| [ "{" ssrocc(occ) "}" ] -> { mkocc occ } +| [ ] -> { noclr } +END + +(** Rewrite rules *) + +{ + +let pr_rwkind = function + | RWred s -> pr_simpl s + | RWdef -> str "/" + | RWeq -> mt () + +let wit_ssrrwkind = add_genarg "ssrrwkind" pr_rwkind + +let pr_rule = function + | RWred s, _ -> pr_simpl s + | RWdef, r-> str "/" ++ pr_term r + | RWeq, r -> pr_term r + +let pr_ssrrule _ _ _ = pr_rule + +let noruleterm loc = mk_term xNoFlag (mkCProp loc) + +} + +ARGUMENT EXTEND ssrrule_ne TYPED AS (ssrrwkind * ssrterm) PRINTED BY { pr_ssrrule } + | [ "YouShouldNotTypeThis" ] -> { anomaly "Grammar placeholder match" } +END + +GRAMMAR EXTEND Gram + GLOBAL: ssrrule_ne; + ssrrule_ne : [ + [ test_not_ssrslashnum; x = + [ "/"; t = ssrterm -> { RWdef, t } + | t = ssrterm -> { RWeq, t } + | s = ssrsimpl_ne -> { RWred s, noruleterm (Some loc) } + ] -> { x } + | s = ssrsimpl_ne -> { RWred s, noruleterm (Some loc) } + ]]; +END + +ARGUMENT EXTEND ssrrule TYPED AS ssrrule_ne PRINTED BY { pr_ssrrule } + | [ ssrrule_ne(r) ] -> { r } + | [ ] -> { RWred Nop, noruleterm (Some loc) } +END + +(** Rewrite arguments *) + +{ + +let pr_option f = function None -> mt() | Some x -> f x +let pr_pattern_squarep= pr_option (fun r -> str "[" ++ pr_rpattern r ++ str "]") +let pr_ssrpattern_squarep _ _ _ = pr_pattern_squarep +let pr_rwarg ((d, m), ((docc, rx), r)) = + pr_rwdir d ++ pr_mult m ++ pr_rwocc docc ++ pr_pattern_squarep rx ++ pr_rule r + +let pr_ssrrwarg _ _ _ = pr_rwarg + +} + +ARGUMENT EXTEND ssrpattern_squarep +TYPED AS rpattern option PRINTED BY { pr_ssrpattern_squarep } + | [ "[" rpattern(rdx) "]" ] -> { Some rdx } + | [ ] -> { None } +END + +ARGUMENT EXTEND ssrpattern_ne_squarep +TYPED AS rpattern option PRINTED BY { pr_ssrpattern_squarep } + | [ "[" rpattern(rdx) "]" ] -> { Some rdx } +END + + +ARGUMENT EXTEND ssrrwarg + TYPED AS ((ssrdir * ssrmult) * ((ssrdocc * rpattern option) * ssrrule)) + PRINTED BY { pr_ssrrwarg } + | [ "-" ssrmult(m) ssrrwocc(docc) ssrpattern_squarep(rx) ssrrule_ne(r) ] -> + { mk_rwarg (R2L, m) (docc, rx) r } + | [ "-/" ssrterm(t) ] -> (* just in case '-/' should become a token *) + { mk_rwarg (R2L, nomult) norwocc (RWdef, t) } + | [ ssrmult_ne(m) ssrrwocc(docc) ssrpattern_squarep(rx) ssrrule_ne(r) ] -> + { mk_rwarg (L2R, m) (docc, rx) r } + | [ "{" ne_ssrhyp_list(clr) "}" ssrpattern_ne_squarep(rx) ssrrule_ne(r) ] -> + { mk_rwarg norwmult (mkclr clr, rx) r } + | [ "{" ne_ssrhyp_list(clr) "}" ssrrule(r) ] -> + { mk_rwarg norwmult (mkclr clr, None) r } + | [ "{" ssrocc(occ) "}" ssrpattern_squarep(rx) ssrrule_ne(r) ] -> + { mk_rwarg norwmult (mkocc occ, rx) r } + | [ "{" "}" ssrpattern_squarep(rx) ssrrule_ne(r) ] -> + { mk_rwarg norwmult (nodocc, rx) r } + | [ ssrpattern_ne_squarep(rx) ssrrule_ne(r) ] -> + { mk_rwarg norwmult (noclr, rx) r } + | [ ssrrule_ne(r) ] -> + { mk_rwarg norwmult norwocc r } +END + +TACTIC EXTEND ssrinstofruleL2R +| [ "ssrinstancesofruleL2R" ssrterm(arg) ] -> { V82.tactic (ssrinstancesofrule ist L2R arg) } +END +TACTIC EXTEND ssrinstofruleR2L +| [ "ssrinstancesofruleR2L" ssrterm(arg) ] -> { V82.tactic (ssrinstancesofrule ist R2L arg) } +END + +(** Rewrite argument sequence *) + +(* type ssrrwargs = ssrrwarg list *) + +{ + +let pr_ssrrwargs _ _ _ rwargs = pr_list spc pr_rwarg rwargs + +} + +ARGUMENT EXTEND ssrrwargs TYPED AS ssrrwarg list PRINTED BY { pr_ssrrwargs } + | [ "YouShouldNotTypeThis" ] -> { anomaly "Grammar placeholder match" } +END + +{ + +let ssr_rw_syntax = Summary.ref ~name:"SSR:rewrite" true + +let _ = + Goptions.declare_bool_option + { Goptions.optname = "ssreflect rewrite"; + Goptions.optkey = ["SsrRewrite"]; + Goptions.optread = (fun _ -> !ssr_rw_syntax); + Goptions.optdepr = false; + Goptions.optwrite = (fun b -> ssr_rw_syntax := b) } + +let lbrace = Char.chr 123 +(** Workaround to a limitation of coqpp *) + +let test_ssr_rw_syntax = + let test strm = + if not !ssr_rw_syntax then raise Stream.Failure else + if is_ssr_loaded () then () else + match Util.stream_nth 0 strm with + | Tok.KEYWORD key when List.mem key.[0] [lbrace; '['; '/'] -> () + | _ -> raise Stream.Failure in + Gram.Entry.of_parser "test_ssr_rw_syntax" test + +} + +GRAMMAR EXTEND Gram + GLOBAL: ssrrwargs; + ssrrwargs: [[ test_ssr_rw_syntax; a = LIST1 ssrrwarg -> { a } ]]; +END + +(** The "rewrite" tactic *) + +TACTIC EXTEND ssrrewrite + | [ "rewrite" ssrrwargs(args) ssrclauses(clauses) ] -> + { tclCLAUSES (old_tac (ssrrewritetac ist args)) clauses } +END + +(** The "unlock" tactic *) + +{ + +let pr_unlockarg (occ, t) = pr_occ occ ++ pr_term t +let pr_ssrunlockarg _ _ _ = pr_unlockarg + +} + +ARGUMENT EXTEND ssrunlockarg TYPED AS (ssrocc * ssrterm) + PRINTED BY { pr_ssrunlockarg } + | [ "{" ssrocc(occ) "}" ssrterm(t) ] -> { occ, t } + | [ ssrterm(t) ] -> { None, t } +END + +{ + +let pr_ssrunlockargs _ _ _ args = pr_list spc pr_unlockarg args + +} + +ARGUMENT EXTEND ssrunlockargs TYPED AS ssrunlockarg list + PRINTED BY { pr_ssrunlockargs } + | [ ssrunlockarg_list(args) ] -> { args } +END + +TACTIC EXTEND ssrunlock + | [ "unlock" ssrunlockargs(args) ssrclauses(clauses) ] -> + { tclCLAUSES (old_tac (unlocktac ist args)) clauses } +END + +(** 8. Forward chaining tactics (pose, set, have, suffice, wlog) *) + + +TACTIC EXTEND ssrpose +| [ "pose" ssrfixfwd(ffwd) ] -> { V82.tactic (ssrposetac ffwd) } +| [ "pose" ssrcofixfwd(ffwd) ] -> { V82.tactic (ssrposetac ffwd) } +| [ "pose" ssrfwdid(id) ssrposefwd(fwd) ] -> { V82.tactic (ssrposetac (id, fwd)) } +END + +(** The "set" tactic *) + +(* type ssrsetfwd = ssrfwd * ssrdocc *) + +TACTIC EXTEND ssrset +| [ "set" ssrfwdid(id) ssrsetfwd(fwd) ssrclauses(clauses) ] -> + { tclCLAUSES (old_tac (ssrsettac id fwd)) clauses } +END + +(** The "have" tactic *) + +(* type ssrhavefwd = ssrfwd * ssrhint *) + + +(* Pltac. *) + +(* The standard TACTIC EXTEND does not work for abstract *) +GRAMMAR EXTEND Gram + GLOBAL: tactic_expr; + tactic_expr: LEVEL "3" + [ RIGHTA [ IDENT "abstract"; gens = ssrdgens -> + { ssrtac_expr ~loc "abstract" + [Tacexpr.TacGeneric (Genarg.in_gen (Genarg.rawwit wit_ssrdgens) gens)] } ]]; +END +TACTIC EXTEND ssrabstract +| [ "abstract" ssrdgens(gens) ] -> { + if List.length (fst gens) <> 1 then + errorstrm (str"dependents switches '/' not allowed here"); + Ssripats.ssrabstract (ssrdgens_of_parsed_dgens gens) } +END + +TACTIC EXTEND ssrhave +| [ "have" ssrhavefwdwbinders(fwd) ] -> + { V82.tactic (havetac ist fwd false false) } +END + +TACTIC EXTEND ssrhavesuff +| [ "have" "suff" ssrhpats_nobs(pats) ssrhavefwd(fwd) ] -> + { V82.tactic (havetac ist (false,(pats,fwd)) true false) } +END + +TACTIC EXTEND ssrhavesuffices +| [ "have" "suffices" ssrhpats_nobs(pats) ssrhavefwd(fwd) ] -> + { V82.tactic (havetac ist (false,(pats,fwd)) true false) } +END + +TACTIC EXTEND ssrsuffhave +| [ "suff" "have" ssrhpats_nobs(pats) ssrhavefwd(fwd) ] -> + { V82.tactic (havetac ist (false,(pats,fwd)) true true) } +END + +TACTIC EXTEND ssrsufficeshave +| [ "suffices" "have" ssrhpats_nobs(pats) ssrhavefwd(fwd) ] -> + { V82.tactic (havetac ist (false,(pats,fwd)) true true) } +END + +(** The "suffice" tactic *) + +{ + +let pr_ssrsufffwdwbinders _ _ prt (hpats, (fwd, hint)) = + pr_hpats hpats ++ pr_fwd fwd ++ pr_hint prt hint + +} + +ARGUMENT EXTEND ssrsufffwd + TYPED AS (ssrhpats * (ssrfwd * ssrhint)) PRINTED BY { pr_ssrsufffwdwbinders } +| [ ssrhpats(pats) ssrbinder_list(bs) ":" ast_closure_lterm(t) ssrhint(hint) ] -> + { let ((clr, pats), binders), simpl = pats in + let allbs = intro_id_to_binder binders @ bs in + let allbinders = binders @ List.flatten (binder_to_intro_id bs) in + let fwd = mkFwdHint ":" t in + (((clr, pats), allbinders), simpl), (bind_fwd allbs fwd, hint) } +END + + +TACTIC EXTEND ssrsuff +| [ "suff" ssrsufffwd(fwd) ] -> { V82.tactic (sufftac ist fwd) } +END + +TACTIC EXTEND ssrsuffices +| [ "suffices" ssrsufffwd(fwd) ] -> { V82.tactic (sufftac ist fwd) } +END + +(** The "wlog" (Without Loss Of Generality) tactic *) + +(* type ssrwlogfwd = ssrwgen list * ssrfwd *) + +{ + +let pr_ssrwlogfwd _ _ _ (gens, t) = + str ":" ++ pr_list mt pr_wgen gens ++ spc() ++ pr_fwd t + +} + +ARGUMENT EXTEND ssrwlogfwd TYPED AS (ssrwgen list * ssrfwd) + PRINTED BY { pr_ssrwlogfwd } +| [ ":" ssrwgen_list(gens) "/" ast_closure_lterm(t) ] -> { gens, mkFwdHint "/" t} +END + + +TACTIC EXTEND ssrwlog +| [ "wlog" ssrhpats_nobs(pats) ssrwlogfwd(fwd) ssrhint(hint) ] -> + { V82.tactic (wlogtac ist pats fwd hint false `NoGen) } +END + +TACTIC EXTEND ssrwlogs +| [ "wlog" "suff" ssrhpats_nobs(pats) ssrwlogfwd(fwd) ssrhint(hint) ] -> + { V82.tactic (wlogtac ist pats fwd hint true `NoGen) } +END + +TACTIC EXTEND ssrwlogss +| [ "wlog" "suffices" ssrhpats_nobs(pats) ssrwlogfwd(fwd) ssrhint(hint) ]-> + { V82.tactic (wlogtac ist pats fwd hint true `NoGen) } +END + +TACTIC EXTEND ssrwithoutloss +| [ "without" "loss" ssrhpats_nobs(pats) ssrwlogfwd(fwd) ssrhint(hint) ] -> + { V82.tactic (wlogtac ist pats fwd hint false `NoGen) } +END + +TACTIC EXTEND ssrwithoutlosss +| [ "without" "loss" "suff" + ssrhpats_nobs(pats) ssrwlogfwd(fwd) ssrhint(hint) ] -> + { V82.tactic (wlogtac ist pats fwd hint true `NoGen) } +END + +TACTIC EXTEND ssrwithoutlossss +| [ "without" "loss" "suffices" + ssrhpats_nobs(pats) ssrwlogfwd(fwd) ssrhint(hint) ]-> + { V82.tactic (wlogtac ist pats fwd hint true `NoGen) } +END + +{ + +(* Generally have *) +let pr_idcomma _ _ _ = function + | None -> mt() + | Some None -> str"_, " + | Some (Some id) -> pr_id id ++ str", " + +} + +ARGUMENT EXTEND ssr_idcomma TYPED AS ident option option PRINTED BY { pr_idcomma } + | [ ] -> { None } +END + +{ + +let accept_idcomma strm = + match stream_nth 0 strm with + | Tok.IDENT _ | Tok.KEYWORD "_" -> accept_before_syms [","] strm + | _ -> raise Stream.Failure + +let test_idcomma = Gram.Entry.of_parser "test_idcomma" accept_idcomma + +} + +GRAMMAR EXTEND Gram + GLOBAL: ssr_idcomma; + ssr_idcomma: [ [ test_idcomma; + ip = [ id = IDENT -> { Some (Id.of_string id) } | "_" -> { None } ]; "," -> + { Some ip } + ] ]; +END + +{ + +let augment_preclr clr1 (((clr0, x),y),z) = (((clr1 @ clr0, x),y),z) + +} + +TACTIC EXTEND ssrgenhave +| [ "gen" "have" ssrclear(clr) + ssr_idcomma(id) ssrhpats_nobs(pats) ssrwlogfwd(fwd) ssrhint(hint) ] -> + { let pats = augment_preclr clr pats in + V82.tactic (wlogtac ist pats fwd hint false (`Gen id)) } +END + +TACTIC EXTEND ssrgenhave2 +| [ "generally" "have" ssrclear(clr) + ssr_idcomma(id) ssrhpats_nobs(pats) ssrwlogfwd(fwd) ssrhint(hint) ] -> + { let pats = augment_preclr clr pats in + V82.tactic (wlogtac ist pats fwd hint false (`Gen id)) } +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 ;; + +} + +(* vim: set filetype=ocaml foldmethod=marker: *) diff --git a/plugins/ssr/ssrvernac.ml4 b/plugins/ssr/ssrvernac.ml4 deleted file mode 100644 index 02a5d08507..0000000000 --- a/plugins/ssr/ssrvernac.ml4 +++ /dev/null @@ -1,625 +0,0 @@ -(************************************************************************) -(* * The Coq Proof Assistant / The Coq Development Team *) -(* v * INRIA, CNRS and contributors - Copyright 1999-2018 *) -(* is then ... else ... *) -(* if is [in ..] return ... then ... else ... *) -(* let: := in ... *) -(* let: [in ...] := return ... in ... *) -(* The scope of a top-level 'as' in the pattern extends over the *) -(* 'return' type (dependent if/let). *) -(* Note that the optional "in ..." appears next to the *) -(* rather than the in then "let:" syntax. The alternative *) -(* would lead to ambiguities in, e.g., *) -(* let: p1 := (*v---INNER LET:---v *) *) -(* let: p2 := let: p3 := e3 in k return t in k2 in k1 return t' *) -(* in b (*^--ALTERNATIVE INNER LET--------^ *) *) - -(* Caveat : There is no pretty-printing support, since this would *) -(* require a modification to the Coq kernel (adding a new match *) -(* display style -- why aren't these strings?); also, the v8.1 *) -(* pretty-printer only allows extension hooks for printing *) -(* integer or string literals. *) -(* Also note that in the v8 grammar "is" needs to be a keyword; *) -(* as this can't be done from an ML extension file, the new *) -(* syntax will only work when ssreflect.v is imported. *) - -let no_ct = None, None and no_rt = None in -let aliasvar = function - | [[{ CAst.v = CPatAlias (_, na); loc }]] -> Some na - | _ -> None in -let mk_cnotype mp = aliasvar mp, None in -let mk_ctype mp t = aliasvar mp, Some t in -let mk_rtype t = Some t in -let mk_dthen ?loc (mp, ct, rt) c = (CAst.make ?loc (mp, c)), ct, rt in -let mk_let ?loc rt ct mp c1 = - CAst.make ?loc @@ CCases (LetPatternStyle, rt, ct, [CAst.make ?loc (mp, c1)]) in -let mk_pat c (na, t) = (c, na, t) in -GEXTEND Gram - GLOBAL: binder_constr; - ssr_rtype: [[ "return"; t = operconstr LEVEL "100" -> mk_rtype t ]]; - ssr_mpat: [[ p = pattern -> [[p]] ]]; - ssr_dpat: [ - [ mp = ssr_mpat; "in"; t = pattern; rt = ssr_rtype -> mp, mk_ctype mp t, rt - | mp = ssr_mpat; rt = ssr_rtype -> mp, mk_cnotype mp, rt - | mp = ssr_mpat -> mp, no_ct, no_rt - ] ]; - ssr_dthen: [[ dp = ssr_dpat; "then"; c = lconstr -> mk_dthen ~loc:!@loc dp c ]]; - ssr_elsepat: [[ "else" -> [[CAst.make ~loc:!@loc @@ CPatAtom None]] ]]; - ssr_else: [[ mp = ssr_elsepat; c = lconstr -> CAst.make ~loc:!@loc (mp, c) ]]; - binder_constr: [ - [ "if"; c = operconstr LEVEL "200"; "is"; db1 = ssr_dthen; b2 = ssr_else -> - let b1, ct, rt = db1 in CAst.make ~loc:!@loc @@ CCases (MatchStyle, rt, [mk_pat c ct], [b1; b2]) - | "if"; c = operconstr LEVEL "200";"isn't";db1 = ssr_dthen; b2 = ssr_else -> - let b1, ct, rt = db1 in - let b1, b2 = let open CAst in - let {loc=l1; v=(p1, r1)}, {loc=l2; v=(p2, r2)} = b1, b2 in - (make ?loc:l1 (p1, r2), make ?loc:l2 (p2, r1)) - in - CAst.make ~loc:!@loc @@ CCases (MatchStyle, rt, [mk_pat c ct], [b1; b2]) - | "let"; ":"; mp = ssr_mpat; ":="; c = lconstr; "in"; c1 = lconstr -> - mk_let ~loc:!@loc no_rt [mk_pat c no_ct] mp c1 - | "let"; ":"; mp = ssr_mpat; ":="; c = lconstr; - rt = ssr_rtype; "in"; c1 = lconstr -> - mk_let ~loc:!@loc rt [mk_pat c (mk_cnotype mp)] mp c1 - | "let"; ":"; mp = ssr_mpat; "in"; t = pattern; ":="; c = lconstr; - rt = ssr_rtype; "in"; c1 = lconstr -> - mk_let ~loc:!@loc rt [mk_pat c (mk_ctype mp t)] mp c1 - ] ]; -END - -GEXTEND Gram - GLOBAL: closed_binder; - closed_binder: [ - [ ["of" | "&"]; c = operconstr LEVEL "99" -> - [CLocalAssum ([CAst.make ~loc:!@loc Anonymous], Default Explicit, c)] - ] ]; -END -(* }}} *) - -(** Vernacular commands: Prenex Implicits and Search *)(* {{{ **********************) - -(* This should really be implemented as an extension to the implicit *) -(* arguments feature, but unfortuately that API is sealed. The current *) -(* workaround uses a combination of notations that works reasonably, *) -(* with the following caveats: *) -(* - The pretty-printing always elides prenex implicits, even when *) -(* they are obviously needed. *) -(* - Prenex Implicits are NEVER exported from a module, because this *) -(* would lead to faulty pretty-printing and scoping errors. *) -(* - The command "Import Prenex Implicits" can be used to reassert *) -(* Prenex Implicits for all the visible constants that had been *) -(* declared as Prenex Implicits. *) - -let declare_one_prenex_implicit locality f = - let fref = - try Smartlocate.global_with_alias f - with _ -> errorstrm (pr_qualid f ++ str " is not declared") in - let rec loop = function - | a :: args' when Impargs.is_status_implicit a -> - (ExplByName (Impargs.name_of_implicit a), (true, true, true)) :: loop args' - | args' when List.exists Impargs.is_status_implicit args' -> - errorstrm (str "Expected prenex implicits for " ++ pr_qualid f) - | _ -> [] in - let impls = - match Impargs.implicits_of_global fref with - | [cond,impls] -> impls - | [] -> errorstrm (str "Expected some implicits for " ++ pr_qualid f) - | _ -> errorstrm (str "Multiple implicits not supported") in - match loop impls with - | [] -> - errorstrm (str "Expected some implicits for " ++ pr_qualid f) - | impls -> - Impargs.declare_manual_implicits locality fref ~enriching:false [impls] - -VERNAC COMMAND FUNCTIONAL EXTEND Ssrpreneximplicits CLASSIFIED AS SIDEFF - | [ "Prenex" "Implicits" ne_global_list(fl) ] - -> [ fun ~atts ~st -> - let open Vernacinterp in - let locality = Locality.make_section_locality atts.locality in - List.iter (declare_one_prenex_implicit locality) fl; - st - ] -END - -(* Vernac grammar visibility patch *) - -GEXTEND Gram - GLOBAL: gallina_ext; - gallina_ext: - [ [ IDENT "Import"; IDENT "Prenex"; IDENT "Implicits" -> - Vernacexpr.VernacUnsetOption (false, ["Printing"; "Implicit"; "Defensive"]) - ] ] - ; -END - -(** Extend Search to subsume SearchAbout, also adding hidden Type coercions. *) - -(* Main prefilter *) - -type raw_glob_search_about_item = - | RGlobSearchSubPattern of constr_expr - | RGlobSearchString of Loc.t * string * string option - -let pr_search_item = function - | RGlobSearchString (_,s,_) -> str s - | RGlobSearchSubPattern p -> pr_constr_expr p - -let wit_ssr_searchitem = add_genarg "ssr_searchitem" pr_search_item - -let pr_ssr_search_item _ _ _ = pr_search_item - -(* Workaround the notation API that can only print notations *) - -let is_ident s = try CLexer.check_ident s; true with _ -> false - -let is_ident_part s = is_ident ("H" ^ s) - -let interp_search_notation ?loc tag okey = - let err msg = CErrors.user_err ?loc ~hdr:"interp_search_notation" msg in - let mk_pntn s for_key = - let n = String.length s in - let s' = Bytes.make (n + 2) ' ' in - let rec loop i i' = - if i >= n then s', i' - 2 else if s.[i] = ' ' then loop (i + 1) i' else - let j = try String.index_from s (i + 1) ' ' with _ -> n in - let m = j - i in - if s.[i] = '\'' && i < j - 2 && s.[j - 1] = '\'' then - (String.blit s (i + 1) s' i' (m - 2); loop (j + 1) (i' + m - 1)) - else if for_key && is_ident (String.sub s i m) then - (Bytes.set s' i' '_'; loop (j + 1) (i' + 2)) - else (String.blit s i s' i' m; loop (j + 1) (i' + m + 1)) in - loop 0 1 in - let trim_ntn (pntn, m) = (InConstrEntrySomeLevel,Bytes.sub_string pntn 1 (max 0 m)) in - let pr_ntn ntn = str "(" ++ Notation.pr_notation ntn ++ str ")" in - let pr_and_list pr = function - | [x] -> pr x - | x :: lx -> pr_list pr_comma pr lx ++ pr_comma () ++ str "and " ++ pr x - | [] -> mt () in - let pr_sc sc = str (if sc = "" then "independently" else sc) in - let pr_scs = function - | [""] -> pr_sc "" - | scs -> str "in " ++ pr_and_list pr_sc scs in - let generator, pr_tag_sc = - let ign _ = mt () in match okey with - | Some key -> - let sc = Notation.find_delimiters_scope ?loc key in - let pr_sc s_in = str s_in ++ spc() ++ str sc ++ pr_comma() in - Notation.pr_scope ign sc, pr_sc - | None -> Notation.pr_scopes ign, ign in - let qtag s_in = pr_tag_sc s_in ++ qstring tag ++ spc()in - let ptag, ttag = - let ptag, m = mk_pntn tag false in - if m <= 0 then err (str "empty notation fragment"); - ptag, trim_ntn (ptag, m) in - let last = ref "" and last_sc = ref "" in - let scs = ref [] and ntns = ref [] in - let push_sc sc = match !scs with - | "" :: scs' -> scs := "" :: sc :: scs' - | scs' -> scs := sc :: scs' in - let get s _ _ = match !last with - | "Scope " -> last_sc := s; last := "" - | "Lonely notation" -> last_sc := ""; last := "" - | "\"" -> - let pntn, m = mk_pntn s true in - if String.string_contains ~where:(Bytes.to_string pntn) ~what:(Bytes.to_string ptag) then begin - let ntn = trim_ntn (pntn, m) in - match !ntns with - | [] -> ntns := [ntn]; scs := [!last_sc] - | ntn' :: _ when ntn' = ntn -> push_sc !last_sc - | _ when ntn = ttag -> ntns := ntn :: !ntns; scs := [!last_sc] - | _ :: ntns' when List.mem ntn ntns' -> () - | ntn' :: ntns' -> ntns := ntn' :: ntn :: ntns' - end; - last := "" - | _ -> last := s in - pp_with (Format.make_formatter get (fun _ -> ())) generator; - let ntn = match !ntns with - | [] -> - err (hov 0 (qtag "in" ++ str "does not occur in any notation")) - | ntn :: ntns' when ntn = ttag -> - if ntns' <> [] then begin - let pr_ntns' = pr_and_list pr_ntn ntns' in - Feedback.msg_warning (hov 4 (qtag "In" ++ str "also occurs in " ++ pr_ntns')) - end; ntn - | [ntn] -> - Feedback.msg_info (hov 4 (qtag "In" ++ str "is part of notation " ++ pr_ntn ntn)); ntn - | ntns' -> - let e = str "occurs in" ++ spc() ++ pr_and_list pr_ntn ntns' in - err (hov 4 (str "ambiguous: " ++ qtag "in" ++ e)) in - let (nvars, body), ((_, pat), osc) = match !scs with - | [sc] -> Notation.interp_notation ?loc ntn (None, [sc]) - | scs' -> - try Notation.interp_notation ?loc ntn (None, []) with _ -> - let e = pr_ntn ntn ++ spc() ++ str "is defined " ++ pr_scs scs' in - err (hov 4 (str "ambiguous: " ++ pr_tag_sc "in" ++ e)) in - let sc = Option.default "" osc in - let _ = - let m_sc = - if osc <> None then str "In " ++ str sc ++ pr_comma() else mt() in - let ntn_pat = trim_ntn (mk_pntn pat false) in - let rbody = glob_constr_of_notation_constr ?loc body in - let m_body = hov 0 (Constrextern.without_symbols prl_glob_constr rbody) in - let m = m_sc ++ pr_ntn ntn_pat ++ spc () ++ str "denotes " ++ m_body in - Feedback.msg_info (hov 0 m) in - if List.length !scs > 1 then - let scs' = List.remove (=) sc !scs in - let w = pr_ntn ntn ++ str " is also defined " ++ pr_scs scs' in - Feedback.msg_warning (hov 4 w) - else if String.string_contains ~where:(snd ntn) ~what:" .. " then - err (pr_ntn ntn ++ str " is an n-ary notation"); - let nvars = List.filter (fun (_,(_,typ)) -> typ = NtnTypeConstr) nvars in - let rec sub () = function - | NVar x when List.mem_assoc x nvars -> DAst.make ?loc @@ GPatVar (FirstOrderPatVar x) - | c -> - glob_constr_of_notation_constr_with_binders ?loc (fun _ x -> (), None, x) sub () c in - let _, npat = Patternops.pattern_of_glob_constr (sub () body) in - Search.GlobSearchSubPattern npat - -ARGUMENT EXTEND ssr_search_item TYPED AS ssr_searchitem - PRINTED BY pr_ssr_search_item - | [ string(s) ] -> [ RGlobSearchString (loc,s,None) ] - | [ string(s) "%" preident(key) ] -> [ RGlobSearchString (loc,s,Some key) ] - | [ constr_pattern(p) ] -> [ RGlobSearchSubPattern p ] -END - -let pr_ssr_search_arg _ _ _ = - let pr_item (b, p) = str (if b then "-" else "") ++ pr_search_item p in - pr_list spc pr_item - -ARGUMENT EXTEND ssr_search_arg TYPED AS (bool * ssr_searchitem) list - PRINTED BY pr_ssr_search_arg - | [ "-" ssr_search_item(p) ssr_search_arg(a) ] -> [ (false, p) :: a ] - | [ ssr_search_item(p) ssr_search_arg(a) ] -> [ (true, p) :: a ] - | [ ] -> [ [] ] -END - -(* Main type conclusion pattern filter *) - -let rec splay_search_pattern na = function - | Pattern.PApp (fp, args) -> splay_search_pattern (na + Array.length args) fp - | Pattern.PLetIn (_, _, _, bp) -> splay_search_pattern na bp - | Pattern.PRef hr -> hr, na - | _ -> CErrors.user_err (Pp.str "no head constant in head search pattern") - -let push_rels_assum l e = - let l = List.map (fun (n,t) -> n, EConstr.Unsafe.to_constr t) l in - push_rels_assum l e - -let coerce_search_pattern_to_sort hpat = - let env = Global.env () in - let sigma = Evd.(from_env env) in - let mkPApp fp n_imps args = - let args' = Array.append (Array.make n_imps (Pattern.PMeta None)) args in - Pattern.PApp (fp, args') in - let hr, na = splay_search_pattern 0 hpat in - let dc, ht = - let hr, _ = Global.type_of_global_in_context (Global.env ()) hr (** FIXME *) in - Reductionops.splay_prod env sigma (EConstr.of_constr hr) in - let np = List.length dc in - if np < na then CErrors.user_err (Pp.str "too many arguments in head search pattern") else - let hpat' = if np = na then hpat else mkPApp hpat (np - na) [||] in - let warn () = - Feedback.msg_warning (str "Listing only lemmas with conclusion matching " ++ - pr_constr_pattern_env env sigma hpat') in - if EConstr.isSort sigma ht then begin warn (); true, hpat' end else - let filter_head, coe_path = - try - let _, cp = - Classops.lookup_path_to_sort_from (push_rels_assum dc env) sigma ht in - warn (); - true, cp - with _ -> false, [] in - let coerce hp coe_index = - let coe_ref = coe_index.Classops.coe_value in - try - let n_imps = Option.get (Classops.hide_coercion coe_ref) in - mkPApp (Pattern.PRef coe_ref) n_imps [|hp|] - with Not_found | Option.IsNone -> - errorstrm (str "need explicit coercion " ++ pr_global coe_ref ++ spc () - ++ str "to interpret head search pattern as type") in - filter_head, List.fold_left coerce hpat' coe_path - -let interp_head_pat hpat = - let filter_head, p = coerce_search_pattern_to_sort hpat in - let rec loop c = match CoqConstr.kind c with - | Cast (c', _, _) -> loop c' - | Prod (_, _, c') -> loop c' - | LetIn (_, _, _, c') -> loop c' - | _ -> - let env = Global.env () in - let sigma = Evd.from_env env in - Constr_matching.is_matching env sigma p (EConstr.of_constr c) in - filter_head, loop - -let all_true _ = true - -let rec interp_search_about args accu = match args with -| [] -> accu -| (flag, arg) :: rem -> - fun gr env typ -> - let ans = Search.search_about_filter arg gr env typ in - (if flag then ans else not ans) && interp_search_about rem accu gr env typ - -let interp_search_arg arg = - let arg = List.map (fun (x,arg) -> x, match arg with - | RGlobSearchString (loc,s,key) -> - if is_ident_part s then Search.GlobSearchString s else - interp_search_notation ~loc s key - | RGlobSearchSubPattern p -> - try - let env = Global.env () in - let _, p = Constrintern.intern_constr_pattern env (Evd.from_env env) p in - Search.GlobSearchSubPattern p - with e -> let e = CErrors.push e in iraise (ExplainErr.process_vernac_interp_error e)) arg in - let hpat, a1 = match arg with - | (_, Search.GlobSearchSubPattern (Pattern.PMeta _)) :: a' -> all_true, a' - | (true, Search.GlobSearchSubPattern p) :: a' -> - let filter_head, p = interp_head_pat p in - if filter_head then p, a' else all_true, arg - | _ -> all_true, arg in - let is_string = - function (_, Search.GlobSearchString _) -> true | _ -> false in - let a2, a3 = List.partition is_string a1 in - interp_search_about (a2 @ a3) (fun gr env typ -> hpat typ) - -(* Module path postfilter *) - -let pr_modloc (b, m) = if b then str "-" ++ pr_qualid m else pr_qualid m - -let wit_ssrmodloc = add_genarg "ssrmodloc" pr_modloc - -let pr_ssr_modlocs _ _ _ ml = - if ml = [] then str "" else spc () ++ str "in " ++ pr_list spc pr_modloc ml - -ARGUMENT EXTEND ssr_modlocs TYPED AS ssrmodloc list PRINTED BY pr_ssr_modlocs - | [ ] -> [ [] ] -END - -GEXTEND Gram - GLOBAL: ssr_modlocs; - modloc: [[ "-"; m = global -> true, m | m = global -> false, m]]; - ssr_modlocs: [[ "in"; ml = LIST1 modloc -> ml ]]; -END - -let interp_modloc mr = - let interp_mod (_, qid) = - try Nametab.full_name_module qid with Not_found -> - CErrors.user_err ?loc:qid.CAst.loc (str "No Module " ++ pr_qualid qid) in - let mr_out, mr_in = List.partition fst mr in - let interp_bmod b = function - | [] -> fun _ _ _ -> true - | rmods -> Search.module_filter (List.map interp_mod rmods, b) in - let is_in = interp_bmod false mr_in and is_out = interp_bmod true mr_out in - fun gr env typ -> is_in gr env typ && is_out gr env typ - -(* The unified, extended vernacular "Search" command *) - -let ssrdisplaysearch gr env t = - let pr_res = pr_global gr ++ spc () ++ str " " ++ pr_lconstr_env env Evd.empty t in - Feedback.msg_info (hov 2 pr_res ++ fnl ()) - -VERNAC COMMAND EXTEND SsrSearchPattern CLASSIFIED AS QUERY -| [ "Search" ssr_search_arg(a) ssr_modlocs(mr) ] -> - [ let hpat = interp_search_arg a in - let in_mod = interp_modloc mr in - let post_filter gr env typ = in_mod gr env typ && hpat gr env typ in - let display gr env typ = - if post_filter gr env typ then ssrdisplaysearch gr env typ - in - Search.generic_search None display ] -END - -(* }}} *) - -(** View hint database and View application. *)(* {{{ ******************************) - -(* There are three databases of lemmas used to mediate the application *) -(* of reflection lemmas: one for forward chaining, one for backward *) -(* chaining, and one for secondary backward chaining. *) - -(* View hints *) - -let pr_raw_ssrhintref prc _ _ = let open CAst in function - | { v = CAppExpl ((None, r,x), args) } when isCHoles args -> - prc (CAst.make @@ CRef (r,x)) ++ str "|" ++ int (List.length args) - | { v = CApp ((_, { v = CRef _ }), _) } as c -> prc c - | { v = CApp ((_, c), args) } when isCxHoles args -> - prc c ++ str "|" ++ int (List.length args) - | c -> prc c - -let pr_rawhintref c = - let _, env = Pfedit.get_current_context () in - match DAst.get c with - | GApp (f, args) when isRHoles args -> - pr_glob_constr_env env f ++ str "|" ++ int (List.length args) - | _ -> pr_glob_constr_env env c - -let pr_glob_ssrhintref _ _ _ (c, _) = pr_rawhintref c - -let pr_ssrhintref prc _ _ = prc - -let mkhintref ?loc c n = match c.CAst.v with - | CRef (r,x) -> CAst.make ?loc @@ CAppExpl ((None, r, x), mkCHoles ?loc n) - | _ -> mkAppC (c, mkCHoles ?loc n) - -ARGUMENT EXTEND ssrhintref - TYPED AS constr - PRINTED BY pr_ssrhintref - RAW_PRINTED BY pr_raw_ssrhintref - GLOB_PRINTED BY pr_glob_ssrhintref - | [ constr(c) ] -> [ c ] - | [ constr(c) "|" natural(n) ] -> [ mkhintref ~loc c n ] -END - -(* View purpose *) - -let pr_viewpos = function - | Some Ssrview.AdaptorDb.Forward -> str " for move/" - | Some Ssrview.AdaptorDb.Backward -> str " for apply/" - | Some Ssrview.AdaptorDb.Equivalence -> str " for apply//" - | None -> mt () - -let pr_ssrviewpos _ _ _ = pr_viewpos - -ARGUMENT EXTEND ssrviewpos PRINTED BY pr_ssrviewpos - | [ "for" "move" "/" ] -> [ Some Ssrview.AdaptorDb.Forward ] - | [ "for" "apply" "/" ] -> [ Some Ssrview.AdaptorDb.Backward ] - | [ "for" "apply" "/" "/" ] -> [ Some Ssrview.AdaptorDb.Equivalence ] - | [ "for" "apply" "//" ] -> [ Some Ssrview.AdaptorDb.Equivalence ] - | [ ] -> [ None ] -END - -let pr_ssrviewposspc _ _ _ i = pr_viewpos i ++ spc () - -ARGUMENT EXTEND ssrviewposspc TYPED AS ssrviewpos PRINTED BY pr_ssrviewposspc - | [ ssrviewpos(i) ] -> [ i ] -END - -let print_view_hints kind l = - let pp_viewname = str "Hint View" ++ pr_viewpos (Some kind) ++ str " " in - let pp_hints = pr_list spc pr_rawhintref l in - Feedback.msg_info (pp_viewname ++ hov 0 pp_hints ++ Pp.cut ()) - -VERNAC COMMAND EXTEND PrintView CLASSIFIED AS QUERY -| [ "Print" "Hint" "View" ssrviewpos(i) ] -> - [ match i with - | Some k -> print_view_hints k (Ssrview.AdaptorDb.get k) - | None -> - List.iter (fun k -> print_view_hints k (Ssrview.AdaptorDb.get k)) - [ Ssrview.AdaptorDb.Forward; - Ssrview.AdaptorDb.Backward; - Ssrview.AdaptorDb.Equivalence ] - ] -END - -let glob_view_hints lvh = - List.map (Constrintern.intern_constr (Global.env ()) (Evd.from_env (Global.env ()))) lvh - -VERNAC COMMAND EXTEND HintView CLASSIFIED AS SIDEFF - | [ "Hint" "View" ssrviewposspc(n) ne_ssrhintref_list(lvh) ] -> - [ let hints = glob_view_hints lvh in - match n with - | None -> - Ssrview.AdaptorDb.declare Ssrview.AdaptorDb.Forward hints; - Ssrview.AdaptorDb.declare Ssrview.AdaptorDb.Backward hints - | Some k -> - Ssrview.AdaptorDb.declare k hints ] -END - -(* }}} *) - -(** Canonical Structure alias *) - -GEXTEND Gram - GLOBAL: gallina_ext; - - gallina_ext: - (* Canonical structure *) - [[ IDENT "Canonical"; qid = Constr.global -> - Vernacexpr.VernacCanonical (CAst.make @@ AN qid) - | IDENT "Canonical"; ntn = Prim.by_notation -> - Vernacexpr.VernacCanonical (CAst.make @@ ByNotation ntn) - | IDENT "Canonical"; qid = Constr.global; - d = G_vernac.def_body -> - let s = coerce_reference_to_id qid in - Vernacexpr.VernacDefinition - ((Decl_kinds.NoDischarge,Decl_kinds.CanonicalStructure), - ((CAst.make (Name s)),None), d) - ]]; -END - -(** Keyword compatibility fixes. *) - -(* Coq v8.1 notation uses "by" and "of" quasi-keywords, i.e., reserved *) -(* identifiers used as keywords. This is incompatible with ssreflect.v *) -(* which makes "by" and "of" true keywords, because of technicalities *) -(* in the internal lexer-parser API of Coq. We patch this here by *) -(* adding new parsing rules that recognize the new keywords. *) -(* To make matters worse, the Coq grammar for tactics fails to *) -(* export the non-terminals we need to patch. Fortunately, the CamlP5 *) -(* API provides a backdoor access (with loads of Obj.magic trickery). *) - -(* Coq v8.3 defines "by" as a keyword, some hacks are not needed any *) -(* longer and thus comment out. Such comments are marked with v8.3 *) - -open Pltac - -GEXTEND Gram - GLOBAL: hypident; - hypident: [ - [ "("; IDENT "type"; "of"; id = Prim.identref; ")" -> id, Locus.InHypTypeOnly - | "("; IDENT "value"; "of"; id = Prim.identref; ")" -> id, Locus.InHypValueOnly - ] ]; -END - -GEXTEND Gram - GLOBAL: hloc; -hloc: [ - [ "in"; "("; "Type"; "of"; id = ident; ")" -> - Tacexpr.HypLocation (CAst.make id, Locus.InHypTypeOnly) - | "in"; "("; IDENT "Value"; "of"; id = ident; ")" -> - Tacexpr.HypLocation (CAst.make id, Locus.InHypValueOnly) - ] ]; -END - -GEXTEND Gram - GLOBAL: constr_eval; - constr_eval: [ - [ IDENT "type"; "of"; c = Constr.constr -> Genredexpr.ConstrTypeOf c ] - ]; -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 ;; - -(* vim: set filetype=ocaml foldmethod=marker: *) diff --git a/plugins/ssr/ssrvernac.mlg b/plugins/ssr/ssrvernac.mlg new file mode 100644 index 0000000000..876751911b --- /dev/null +++ b/plugins/ssr/ssrvernac.mlg @@ -0,0 +1,675 @@ +(************************************************************************) +(* * The Coq Proof Assistant / The Coq Development Team *) +(* v * INRIA, CNRS and contributors - Copyright 1999-2018 *) +(* is then ... else ... *) +(* if is [in ..] return ... then ... else ... *) +(* let: := in ... *) +(* let: [in ...] := return ... in ... *) +(* The scope of a top-level 'as' in the pattern extends over the *) +(* 'return' type (dependent if/let). *) +(* Note that the optional "in ..." appears next to the *) +(* rather than the in then "let:" syntax. The alternative *) +(* would lead to ambiguities in, e.g., *) +(* let: p1 := (*v---INNER LET:---v *) *) +(* let: p2 := let: p3 := e3 in k return t in k2 in k1 return t' *) +(* in b (*^--ALTERNATIVE INNER LET--------^ *) *) + +(* Caveat : There is no pretty-printing support, since this would *) +(* require a modification to the Coq kernel (adding a new match *) +(* display style -- why aren't these strings?); also, the v8.1 *) +(* pretty-printer only allows extension hooks for printing *) +(* integer or string literals. *) +(* Also note that in the v8 grammar "is" needs to be a keyword; *) +(* as this can't be done from an ML extension file, the new *) +(* syntax will only work when ssreflect.v is imported. *) + +let no_ct = None, None and no_rt = None +let aliasvar = function + | [[{ CAst.v = CPatAlias (_, na); loc }]] -> Some na + | _ -> None +let mk_cnotype mp = aliasvar mp, None +let mk_ctype mp t = aliasvar mp, Some t +let mk_rtype t = Some t +let mk_dthen ?loc (mp, ct, rt) c = (CAst.make ?loc (mp, c)), ct, rt +let mk_let ?loc rt ct mp c1 = + CAst.make ?loc @@ CCases (LetPatternStyle, rt, ct, [CAst.make ?loc (mp, c1)]) +let mk_pat c (na, t) = (c, na, t) + +} + +GRAMMAR EXTEND Gram + GLOBAL: binder_constr; + ssr_rtype: [[ "return"; t = operconstr LEVEL "100" -> { mk_rtype t } ]]; + ssr_mpat: [[ p = pattern -> { [[p]] } ]]; + ssr_dpat: [ + [ mp = ssr_mpat; "in"; t = pattern; rt = ssr_rtype -> { mp, mk_ctype mp t, rt } + | mp = ssr_mpat; rt = ssr_rtype -> { mp, mk_cnotype mp, rt } + | mp = ssr_mpat -> { mp, no_ct, no_rt } + ] ]; + ssr_dthen: [[ dp = ssr_dpat; "then"; c = lconstr -> { mk_dthen ~loc dp c } ]]; + ssr_elsepat: [[ "else" -> { [[CAst.make ~loc @@ CPatAtom None]] } ]]; + ssr_else: [[ mp = ssr_elsepat; c = lconstr -> { CAst.make ~loc (mp, c) } ]]; + binder_constr: [ + [ "if"; c = operconstr LEVEL "200"; "is"; db1 = ssr_dthen; b2 = ssr_else -> + { let b1, ct, rt = db1 in CAst.make ~loc @@ CCases (MatchStyle, rt, [mk_pat c ct], [b1; b2]) } + | "if"; c = operconstr LEVEL "200";"isn't";db1 = ssr_dthen; b2 = ssr_else -> + { let b1, ct, rt = db1 in + let b1, b2 = let open CAst in + let {loc=l1; v=(p1, r1)}, {loc=l2; v=(p2, r2)} = b1, b2 in + (make ?loc:l1 (p1, r2), make ?loc:l2 (p2, r1)) + in + CAst.make ~loc @@ CCases (MatchStyle, rt, [mk_pat c ct], [b1; b2]) } + | "let"; ":"; mp = ssr_mpat; ":="; c = lconstr; "in"; c1 = lconstr -> + { mk_let ~loc no_rt [mk_pat c no_ct] mp c1 } + | "let"; ":"; mp = ssr_mpat; ":="; c = lconstr; + rt = ssr_rtype; "in"; c1 = lconstr -> + { mk_let ~loc rt [mk_pat c (mk_cnotype mp)] mp c1 } + | "let"; ":"; mp = ssr_mpat; "in"; t = pattern; ":="; c = lconstr; + rt = ssr_rtype; "in"; c1 = lconstr -> + { mk_let ~loc rt [mk_pat c (mk_ctype mp t)] mp c1 } + ] ]; +END + +GRAMMAR EXTEND Gram + GLOBAL: closed_binder; + closed_binder: [ + [ ["of" -> { () } | "&" -> { () } ]; c = operconstr LEVEL "99" -> + { [CLocalAssum ([CAst.make ~loc Anonymous], Default Explicit, c)] } + ] ]; +END + +(** Vernacular commands: Prenex Implicits and Search *)(***********************) + +(* This should really be implemented as an extension to the implicit *) +(* arguments feature, but unfortuately that API is sealed. The current *) +(* workaround uses a combination of notations that works reasonably, *) +(* with the following caveats: *) +(* - The pretty-printing always elides prenex implicits, even when *) +(* they are obviously needed. *) +(* - Prenex Implicits are NEVER exported from a module, because this *) +(* would lead to faulty pretty-printing and scoping errors. *) +(* - The command "Import Prenex Implicits" can be used to reassert *) +(* Prenex Implicits for all the visible constants that had been *) +(* declared as Prenex Implicits. *) + +{ + +let declare_one_prenex_implicit locality f = + let fref = + try Smartlocate.global_with_alias f + with _ -> errorstrm (pr_qualid f ++ str " is not declared") in + let rec loop = function + | a :: args' when Impargs.is_status_implicit a -> + (ExplByName (Impargs.name_of_implicit a), (true, true, true)) :: loop args' + | args' when List.exists Impargs.is_status_implicit args' -> + errorstrm (str "Expected prenex implicits for " ++ pr_qualid f) + | _ -> [] in + let impls = + match Impargs.implicits_of_global fref with + | [cond,impls] -> impls + | [] -> errorstrm (str "Expected some implicits for " ++ pr_qualid f) + | _ -> errorstrm (str "Multiple implicits not supported") in + match loop impls with + | [] -> + errorstrm (str "Expected some implicits for " ++ pr_qualid f) + | impls -> + Impargs.declare_manual_implicits locality fref ~enriching:false [impls] + +} + +VERNAC COMMAND EXTEND Ssrpreneximplicits CLASSIFIED AS SIDEFF + | [ "Prenex" "Implicits" ne_global_list(fl) ] + -> { + let open Vernacinterp in + let locality = Locality.make_section_locality atts.locality in + List.iter (declare_one_prenex_implicit locality) fl; + } +END + +(* Vernac grammar visibility patch *) + +GRAMMAR EXTEND Gram + GLOBAL: gallina_ext; + gallina_ext: + [ [ IDENT "Import"; IDENT "Prenex"; IDENT "Implicits" -> + { Vernacexpr.VernacUnsetOption (false, ["Printing"; "Implicit"; "Defensive"]) } + ] ] + ; +END + +(** Extend Search to subsume SearchAbout, also adding hidden Type coercions. *) + +(* Main prefilter *) + +{ + +type raw_glob_search_about_item = + | RGlobSearchSubPattern of constr_expr + | RGlobSearchString of Loc.t * string * string option + +let pr_search_item = function + | RGlobSearchString (_,s,_) -> str s + | RGlobSearchSubPattern p -> pr_constr_expr p + +let wit_ssr_searchitem = add_genarg "ssr_searchitem" pr_search_item + +let pr_ssr_search_item _ _ _ = pr_search_item + +(* Workaround the notation API that can only print notations *) + +let is_ident s = try CLexer.check_ident s; true with _ -> false + +let is_ident_part s = is_ident ("H" ^ s) + +let interp_search_notation ?loc tag okey = + let err msg = CErrors.user_err ?loc ~hdr:"interp_search_notation" msg in + let mk_pntn s for_key = + let n = String.length s in + let s' = Bytes.make (n + 2) ' ' in + let rec loop i i' = + if i >= n then s', i' - 2 else if s.[i] = ' ' then loop (i + 1) i' else + let j = try String.index_from s (i + 1) ' ' with _ -> n in + let m = j - i in + if s.[i] = '\'' && i < j - 2 && s.[j - 1] = '\'' then + (String.blit s (i + 1) s' i' (m - 2); loop (j + 1) (i' + m - 1)) + else if for_key && is_ident (String.sub s i m) then + (Bytes.set s' i' '_'; loop (j + 1) (i' + 2)) + else (String.blit s i s' i' m; loop (j + 1) (i' + m + 1)) in + loop 0 1 in + let trim_ntn (pntn, m) = (InConstrEntrySomeLevel,Bytes.sub_string pntn 1 (max 0 m)) in + let pr_ntn ntn = str "(" ++ Notation.pr_notation ntn ++ str ")" in + let pr_and_list pr = function + | [x] -> pr x + | x :: lx -> pr_list pr_comma pr lx ++ pr_comma () ++ str "and " ++ pr x + | [] -> mt () in + let pr_sc sc = str (if sc = "" then "independently" else sc) in + let pr_scs = function + | [""] -> pr_sc "" + | scs -> str "in " ++ pr_and_list pr_sc scs in + let generator, pr_tag_sc = + let ign _ = mt () in match okey with + | Some key -> + let sc = Notation.find_delimiters_scope ?loc key in + let pr_sc s_in = str s_in ++ spc() ++ str sc ++ pr_comma() in + Notation.pr_scope ign sc, pr_sc + | None -> Notation.pr_scopes ign, ign in + let qtag s_in = pr_tag_sc s_in ++ qstring tag ++ spc()in + let ptag, ttag = + let ptag, m = mk_pntn tag false in + if m <= 0 then err (str "empty notation fragment"); + ptag, trim_ntn (ptag, m) in + let last = ref "" and last_sc = ref "" in + let scs = ref [] and ntns = ref [] in + let push_sc sc = match !scs with + | "" :: scs' -> scs := "" :: sc :: scs' + | scs' -> scs := sc :: scs' in + let get s _ _ = match !last with + | "Scope " -> last_sc := s; last := "" + | "Lonely notation" -> last_sc := ""; last := "" + | "\"" -> + let pntn, m = mk_pntn s true in + if String.string_contains ~where:(Bytes.to_string pntn) ~what:(Bytes.to_string ptag) then begin + let ntn = trim_ntn (pntn, m) in + match !ntns with + | [] -> ntns := [ntn]; scs := [!last_sc] + | ntn' :: _ when ntn' = ntn -> push_sc !last_sc + | _ when ntn = ttag -> ntns := ntn :: !ntns; scs := [!last_sc] + | _ :: ntns' when List.mem ntn ntns' -> () + | ntn' :: ntns' -> ntns := ntn' :: ntn :: ntns' + end; + last := "" + | _ -> last := s in + pp_with (Format.make_formatter get (fun _ -> ())) generator; + let ntn = match !ntns with + | [] -> + err (hov 0 (qtag "in" ++ str "does not occur in any notation")) + | ntn :: ntns' when ntn = ttag -> + if ntns' <> [] then begin + let pr_ntns' = pr_and_list pr_ntn ntns' in + Feedback.msg_warning (hov 4 (qtag "In" ++ str "also occurs in " ++ pr_ntns')) + end; ntn + | [ntn] -> + Feedback.msg_info (hov 4 (qtag "In" ++ str "is part of notation " ++ pr_ntn ntn)); ntn + | ntns' -> + let e = str "occurs in" ++ spc() ++ pr_and_list pr_ntn ntns' in + err (hov 4 (str "ambiguous: " ++ qtag "in" ++ e)) in + let (nvars, body), ((_, pat), osc) = match !scs with + | [sc] -> Notation.interp_notation ?loc ntn (None, [sc]) + | scs' -> + try Notation.interp_notation ?loc ntn (None, []) with _ -> + let e = pr_ntn ntn ++ spc() ++ str "is defined " ++ pr_scs scs' in + err (hov 4 (str "ambiguous: " ++ pr_tag_sc "in" ++ e)) in + let sc = Option.default "" osc in + let _ = + let m_sc = + if osc <> None then str "In " ++ str sc ++ pr_comma() else mt() in + let ntn_pat = trim_ntn (mk_pntn pat false) in + let rbody = glob_constr_of_notation_constr ?loc body in + let m_body = hov 0 (Constrextern.without_symbols prl_glob_constr rbody) in + let m = m_sc ++ pr_ntn ntn_pat ++ spc () ++ str "denotes " ++ m_body in + Feedback.msg_info (hov 0 m) in + if List.length !scs > 1 then + let scs' = List.remove (=) sc !scs in + let w = pr_ntn ntn ++ str " is also defined " ++ pr_scs scs' in + Feedback.msg_warning (hov 4 w) + else if String.string_contains ~where:(snd ntn) ~what:" .. " then + err (pr_ntn ntn ++ str " is an n-ary notation"); + let nvars = List.filter (fun (_,(_,typ)) -> typ = NtnTypeConstr) nvars in + let rec sub () = function + | NVar x when List.mem_assoc x nvars -> DAst.make ?loc @@ GPatVar (FirstOrderPatVar x) + | c -> + glob_constr_of_notation_constr_with_binders ?loc (fun _ x -> (), None, x) sub () c in + let _, npat = Patternops.pattern_of_glob_constr (sub () body) in + Search.GlobSearchSubPattern npat + +} + +ARGUMENT EXTEND ssr_search_item TYPED AS ssr_searchitem + PRINTED BY { pr_ssr_search_item } + | [ string(s) ] -> { RGlobSearchString (loc,s,None) } + | [ string(s) "%" preident(key) ] -> { RGlobSearchString (loc,s,Some key) } + | [ constr_pattern(p) ] -> { RGlobSearchSubPattern p } +END + +{ + +let pr_ssr_search_arg _ _ _ = + let pr_item (b, p) = str (if b then "-" else "") ++ pr_search_item p in + pr_list spc pr_item + +} + +ARGUMENT EXTEND ssr_search_arg TYPED AS (bool * ssr_searchitem) list + PRINTED BY { pr_ssr_search_arg } + | [ "-" ssr_search_item(p) ssr_search_arg(a) ] -> { (false, p) :: a } + | [ ssr_search_item(p) ssr_search_arg(a) ] -> { (true, p) :: a } + | [ ] -> { [] } +END + +{ + +(* Main type conclusion pattern filter *) + +let rec splay_search_pattern na = function + | Pattern.PApp (fp, args) -> splay_search_pattern (na + Array.length args) fp + | Pattern.PLetIn (_, _, _, bp) -> splay_search_pattern na bp + | Pattern.PRef hr -> hr, na + | _ -> CErrors.user_err (Pp.str "no head constant in head search pattern") + +let push_rels_assum l e = + let l = List.map (fun (n,t) -> n, EConstr.Unsafe.to_constr t) l in + push_rels_assum l e + +let coerce_search_pattern_to_sort hpat = + let env = Global.env () in + let sigma = Evd.(from_env env) in + let mkPApp fp n_imps args = + let args' = Array.append (Array.make n_imps (Pattern.PMeta None)) args in + Pattern.PApp (fp, args') in + let hr, na = splay_search_pattern 0 hpat in + let dc, ht = + let hr, _ = Global.type_of_global_in_context (Global.env ()) hr (** FIXME *) in + Reductionops.splay_prod env sigma (EConstr.of_constr hr) in + let np = List.length dc in + if np < na then CErrors.user_err (Pp.str "too many arguments in head search pattern") else + let hpat' = if np = na then hpat else mkPApp hpat (np - na) [||] in + let warn () = + Feedback.msg_warning (str "Listing only lemmas with conclusion matching " ++ + pr_constr_pattern_env env sigma hpat') in + if EConstr.isSort sigma ht then begin warn (); true, hpat' end else + let filter_head, coe_path = + try + let _, cp = + Classops.lookup_path_to_sort_from (push_rels_assum dc env) sigma ht in + warn (); + true, cp + with _ -> false, [] in + let coerce hp coe_index = + let coe_ref = coe_index.Classops.coe_value in + try + let n_imps = Option.get (Classops.hide_coercion coe_ref) in + mkPApp (Pattern.PRef coe_ref) n_imps [|hp|] + with Not_found | Option.IsNone -> + errorstrm (str "need explicit coercion " ++ pr_global coe_ref ++ spc () + ++ str "to interpret head search pattern as type") in + filter_head, List.fold_left coerce hpat' coe_path + +let interp_head_pat hpat = + let filter_head, p = coerce_search_pattern_to_sort hpat in + let rec loop c = match CoqConstr.kind c with + | Cast (c', _, _) -> loop c' + | Prod (_, _, c') -> loop c' + | LetIn (_, _, _, c') -> loop c' + | _ -> + let env = Global.env () in + let sigma = Evd.from_env env in + Constr_matching.is_matching env sigma p (EConstr.of_constr c) in + filter_head, loop + +let all_true _ = true + +let rec interp_search_about args accu = match args with +| [] -> accu +| (flag, arg) :: rem -> + fun gr env typ -> + let ans = Search.search_about_filter arg gr env typ in + (if flag then ans else not ans) && interp_search_about rem accu gr env typ + +let interp_search_arg arg = + let arg = List.map (fun (x,arg) -> x, match arg with + | RGlobSearchString (loc,s,key) -> + if is_ident_part s then Search.GlobSearchString s else + interp_search_notation ~loc s key + | RGlobSearchSubPattern p -> + try + let env = Global.env () in + let _, p = Constrintern.intern_constr_pattern env (Evd.from_env env) p in + Search.GlobSearchSubPattern p + with e -> let e = CErrors.push e in iraise (ExplainErr.process_vernac_interp_error e)) arg in + let hpat, a1 = match arg with + | (_, Search.GlobSearchSubPattern (Pattern.PMeta _)) :: a' -> all_true, a' + | (true, Search.GlobSearchSubPattern p) :: a' -> + let filter_head, p = interp_head_pat p in + if filter_head then p, a' else all_true, arg + | _ -> all_true, arg in + let is_string = + function (_, Search.GlobSearchString _) -> true | _ -> false in + let a2, a3 = List.partition is_string a1 in + interp_search_about (a2 @ a3) (fun gr env typ -> hpat typ) + +(* Module path postfilter *) + +let pr_modloc (b, m) = if b then str "-" ++ pr_qualid m else pr_qualid m + +let wit_ssrmodloc = add_genarg "ssrmodloc" pr_modloc + +let pr_ssr_modlocs _ _ _ ml = + if ml = [] then str "" else spc () ++ str "in " ++ pr_list spc pr_modloc ml + +} + +ARGUMENT EXTEND ssr_modlocs TYPED AS ssrmodloc list PRINTED BY { pr_ssr_modlocs } + | [ ] -> { [] } +END + +GRAMMAR EXTEND Gram + GLOBAL: ssr_modlocs; + modloc: [[ "-"; m = global -> { true, m } | m = global -> { false, m } ]]; + ssr_modlocs: [[ "in"; ml = LIST1 modloc -> { ml } ]]; +END + +{ + +let interp_modloc mr = + let interp_mod (_, qid) = + try Nametab.full_name_module qid with Not_found -> + CErrors.user_err ?loc:qid.CAst.loc (str "No Module " ++ pr_qualid qid) in + let mr_out, mr_in = List.partition fst mr in + let interp_bmod b = function + | [] -> fun _ _ _ -> true + | rmods -> Search.module_filter (List.map interp_mod rmods, b) in + let is_in = interp_bmod false mr_in and is_out = interp_bmod true mr_out in + fun gr env typ -> is_in gr env typ && is_out gr env typ + +(* The unified, extended vernacular "Search" command *) + +let ssrdisplaysearch gr env t = + let pr_res = pr_global gr ++ spc () ++ str " " ++ pr_lconstr_env env Evd.empty t in + Feedback.msg_info (hov 2 pr_res ++ fnl ()) + +} + +VERNAC COMMAND EXTEND SsrSearchPattern CLASSIFIED AS QUERY +| [ "Search" ssr_search_arg(a) ssr_modlocs(mr) ] -> + { let hpat = interp_search_arg a in + let in_mod = interp_modloc mr in + let post_filter gr env typ = in_mod gr env typ && hpat gr env typ in + let display gr env typ = + if post_filter gr env typ then ssrdisplaysearch gr env typ + in + Search.generic_search None display } +END + +(** View hint database and View application. *)(* ******************************) + +(* There are three databases of lemmas used to mediate the application *) +(* of reflection lemmas: one for forward chaining, one for backward *) +(* chaining, and one for secondary backward chaining. *) + +(* View hints *) + +{ + +let pr_raw_ssrhintref prc _ _ = let open CAst in function + | { v = CAppExpl ((None, r,x), args) } when isCHoles args -> + prc (CAst.make @@ CRef (r,x)) ++ str "|" ++ int (List.length args) + | { v = CApp ((_, { v = CRef _ }), _) } as c -> prc c + | { v = CApp ((_, c), args) } when isCxHoles args -> + prc c ++ str "|" ++ int (List.length args) + | c -> prc c + +let pr_rawhintref c = + let _, env = Pfedit.get_current_context () in + match DAst.get c with + | GApp (f, args) when isRHoles args -> + pr_glob_constr_env env f ++ str "|" ++ int (List.length args) + | _ -> pr_glob_constr_env env c + +let pr_glob_ssrhintref _ _ _ (c, _) = pr_rawhintref c + +let pr_ssrhintref prc _ _ = prc + +let mkhintref ?loc c n = match c.CAst.v with + | CRef (r,x) -> CAst.make ?loc @@ CAppExpl ((None, r, x), mkCHoles ?loc n) + | _ -> mkAppC (c, mkCHoles ?loc n) + +} + +ARGUMENT EXTEND ssrhintref + TYPED AS constr + PRINTED BY { pr_ssrhintref } + RAW_PRINTED BY { pr_raw_ssrhintref } + GLOB_PRINTED BY { pr_glob_ssrhintref } + | [ constr(c) ] -> { c } + | [ constr(c) "|" natural(n) ] -> { mkhintref ~loc c n } +END + +{ + +(* View purpose *) + +let pr_viewpos = function + | Some Ssrview.AdaptorDb.Forward -> str " for move/" + | Some Ssrview.AdaptorDb.Backward -> str " for apply/" + | Some Ssrview.AdaptorDb.Equivalence -> str " for apply//" + | None -> mt () + +let pr_ssrviewpos _ _ _ = pr_viewpos + +} + +ARGUMENT EXTEND ssrviewpos PRINTED BY { pr_ssrviewpos } + | [ "for" "move" "/" ] -> { Some Ssrview.AdaptorDb.Forward } + | [ "for" "apply" "/" ] -> { Some Ssrview.AdaptorDb.Backward } + | [ "for" "apply" "/" "/" ] -> { Some Ssrview.AdaptorDb.Equivalence } + | [ "for" "apply" "//" ] -> { Some Ssrview.AdaptorDb.Equivalence } + | [ ] -> { None } +END + +{ + +let pr_ssrviewposspc _ _ _ i = pr_viewpos i ++ spc () + +} + +ARGUMENT EXTEND ssrviewposspc TYPED AS ssrviewpos PRINTED BY { pr_ssrviewposspc } + | [ ssrviewpos(i) ] -> { i } +END + +{ + +let print_view_hints kind l = + let pp_viewname = str "Hint View" ++ pr_viewpos (Some kind) ++ str " " in + let pp_hints = pr_list spc pr_rawhintref l in + Feedback.msg_info (pp_viewname ++ hov 0 pp_hints ++ Pp.cut ()) + +} + +VERNAC COMMAND EXTEND PrintView CLASSIFIED AS QUERY +| [ "Print" "Hint" "View" ssrviewpos(i) ] -> + { match i with + | Some k -> print_view_hints k (Ssrview.AdaptorDb.get k) + | None -> + List.iter (fun k -> print_view_hints k (Ssrview.AdaptorDb.get k)) + [ Ssrview.AdaptorDb.Forward; + Ssrview.AdaptorDb.Backward; + Ssrview.AdaptorDb.Equivalence ] + } +END + +{ + +let glob_view_hints lvh = + List.map (Constrintern.intern_constr (Global.env ()) (Evd.from_env (Global.env ()))) lvh + +} + +VERNAC COMMAND EXTEND HintView CLASSIFIED AS SIDEFF + | [ "Hint" "View" ssrviewposspc(n) ne_ssrhintref_list(lvh) ] -> + { let hints = glob_view_hints lvh in + match n with + | None -> + Ssrview.AdaptorDb.declare Ssrview.AdaptorDb.Forward hints; + Ssrview.AdaptorDb.declare Ssrview.AdaptorDb.Backward hints + | Some k -> + Ssrview.AdaptorDb.declare k hints } +END + +(** Canonical Structure alias *) + +GRAMMAR EXTEND Gram + GLOBAL: gallina_ext; + + gallina_ext: + (* Canonical structure *) + [[ IDENT "Canonical"; qid = Constr.global -> + { Vernacexpr.VernacCanonical (CAst.make @@ AN qid) } + | IDENT "Canonical"; ntn = Prim.by_notation -> + { Vernacexpr.VernacCanonical (CAst.make @@ ByNotation ntn) } + | IDENT "Canonical"; qid = Constr.global; + d = G_vernac.def_body -> + { let s = coerce_reference_to_id qid in + Vernacexpr.VernacDefinition + ((Decl_kinds.NoDischarge,Decl_kinds.CanonicalStructure), + ((CAst.make (Name s)),None), d) } + ]]; +END + +(** Keyword compatibility fixes. *) + +(* Coq v8.1 notation uses "by" and "of" quasi-keywords, i.e., reserved *) +(* identifiers used as keywords. This is incompatible with ssreflect.v *) +(* which makes "by" and "of" true keywords, because of technicalities *) +(* in the internal lexer-parser API of Coq. We patch this here by *) +(* adding new parsing rules that recognize the new keywords. *) +(* To make matters worse, the Coq grammar for tactics fails to *) +(* export the non-terminals we need to patch. Fortunately, the CamlP5 *) +(* API provides a backdoor access (with loads of Obj.magic trickery). *) + +(* Coq v8.3 defines "by" as a keyword, some hacks are not needed any *) +(* longer and thus comment out. Such comments are marked with v8.3 *) + +{ + +open Pltac + +} + +GRAMMAR EXTEND Gram + GLOBAL: hypident; + hypident: [ + [ "("; IDENT "type"; "of"; id = Prim.identref; ")" -> { id, Locus.InHypTypeOnly } + | "("; IDENT "value"; "of"; id = Prim.identref; ")" -> { id, Locus.InHypValueOnly } + ] ]; +END + +GRAMMAR EXTEND Gram + GLOBAL: hloc; +hloc: [ + [ "in"; "("; "Type"; "of"; id = ident; ")" -> + { Tacexpr.HypLocation (CAst.make id, Locus.InHypTypeOnly) } + | "in"; "("; IDENT "Value"; "of"; id = ident; ")" -> + { Tacexpr.HypLocation (CAst.make id, Locus.InHypValueOnly) } + ] ]; +END + +GRAMMAR EXTEND Gram + GLOBAL: constr_eval; + constr_eval: [ + [ IDENT "type"; "of"; c = Constr.constr -> { Genredexpr.ConstrTypeOf c }] + ]; +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 ;; + +} + +(* vim: set filetype=ocaml foldmethod=marker: *) -- cgit v1.2.3