diff options
Diffstat (limited to 'grammar/tacextend.mlp')
| -rw-r--r-- | grammar/tacextend.mlp | 160 |
1 files changed, 41 insertions, 119 deletions
diff --git a/grammar/tacextend.mlp b/grammar/tacextend.mlp index 683a7e2f..525be643 100644 --- a/grammar/tacextend.mlp +++ b/grammar/tacextend.mlp @@ -1,18 +1,17 @@ (************************************************************************) -(* v * The Coq Proof Assistant / The Coq Development Team *) -(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2016 *) +(* * The Coq Proof Assistant / The Coq Development Team *) +(* v * INRIA, CNRS and contributors - Copyright 1999-2018 *) +(* <O___,, * (see CREDITS file for the list of authors) *) (* \VV/ **************************************************************) -(* // * This file is distributed under the terms of the *) -(* * GNU Lesser General Public License Version 2.1 *) +(* // * This file is distributed under the terms of the *) +(* * GNU Lesser General Public License Version 2.1 *) +(* * (see LICENSE file for the text of the license) *) (************************************************************************) (** Implementation of the TACTIC EXTEND macro. *) open Q_util open Argextend -open GramCompat - -let dloc = <:expr< Loc.ghost >> let plugin_name = <:expr< __coq_plugin_name >> @@ -21,142 +20,65 @@ let mlexpr_of_ident id = let id = "$" ^ id in <:expr< Names.Id.of_string_soft $str:id$ >> -let rec make_patt = function - | [] -> <:patt< [] >> - | ExtNonTerminal (_, p) :: l -> - <:patt< [ $lid:p$ :: $make_patt l$ ] >> - | _::l -> make_patt l - -let rec make_let raw e = function - | [] -> <:expr< fun $lid:"ist"$ -> $e$ >> - | ExtNonTerminal (g, p) :: l -> - let t = type_of_user_symbol g in - let loc = MLast.loc_of_expr e in - let e = make_let raw e l in - let v = - if raw then <:expr< Genarg.out_gen $make_rawwit loc t$ $lid:p$ >> - else <:expr< Tacinterp.Value.cast $make_topwit loc t$ $lid:p$ >> in - <:expr< let $lid:p$ = $v$ in $e$ >> - | _::l -> make_let raw e l - -let make_clause (pt,_,e) = - (make_patt pt, - vala None, - make_let false e pt) - -let make_fun_clauses loc s l = - let map c = GramCompat.make_fun loc [make_clause c] in - mlexpr_of_list map l - -let get_argt e = <:expr< (fun e -> match e with [ Genarg.ExtraArg tag -> tag | _ -> assert False ]) $e$ >> - let rec mlexpr_of_symbol = function -| Ulist1 s -> <:expr< Extend.Ulist1 $mlexpr_of_symbol s$ >> -| Ulist1sep (s,sep) -> <:expr< Extend.Ulist1sep $mlexpr_of_symbol s$ $str:sep$ >> -| Ulist0 s -> <:expr< Extend.Ulist0 $mlexpr_of_symbol s$ >> -| Ulist0sep (s,sep) -> <:expr< Extend.Ulist0sep $mlexpr_of_symbol s$ $str:sep$ >> -| Uopt s -> <:expr< Extend.Uopt $mlexpr_of_symbol s$ >> +| Ulist1 s -> <:expr< Extend.TUlist1 $mlexpr_of_symbol s$ >> +| Ulist1sep (s,sep) -> <:expr< Extend.TUlist1sep $mlexpr_of_symbol s$ $str:sep$ >> +| Ulist0 s -> <:expr< Extend.TUlist0 $mlexpr_of_symbol s$ >> +| Ulist0sep (s,sep) -> <:expr< Extend.TUlist0sep $mlexpr_of_symbol s$ $str:sep$ >> +| Uopt s -> <:expr< Extend.TUopt $mlexpr_of_symbol s$ >> | Uentry e -> - let arg = get_argt <:expr< $lid:"wit_"^e$ >> in - <:expr< Extend.Uentry (Genarg.ArgT.Any $arg$) >> + let wit = <:expr< $lid:"wit_"^e$ >> in + <:expr< Extend.TUentry (Genarg.get_arg_tag $wit$) >> | Uentryl (e, l) -> assert (e = "tactic"); - let arg = get_argt <:expr< Constrarg.wit_tactic >> in - <:expr< Extend.Uentryl (Genarg.ArgT.Any $arg$) $mlexpr_of_int l$>> - -let make_prod_item = function - | ExtTerminal s -> <:expr< Tacentries.TacTerm $str:s$ >> - | ExtNonTerminal (g, id) -> - <:expr< Tacentries.TacNonTerm $default_loc$ $mlexpr_of_symbol g$ $mlexpr_of_ident id$ >> - -let mlexpr_of_clause cl = - mlexpr_of_list (fun (a,_,_) -> mlexpr_of_list make_prod_item a) cl - -(** Special treatment of constr entries *) -let is_constr_gram = function -| ExtTerminal _ -> false -| ExtNonTerminal (Uentry "constr", _) -> true -| _ -> false - -let make_var = function - | ExtNonTerminal (_, p) -> Some p - | _ -> assert false - -let declare_tactic loc s c cl = match cl with -| [(ExtTerminal name) :: rem, _, tac] when List.for_all is_constr_gram rem -> - (** The extension is only made of a name followed by constr entries: we do not - add any grammar nor printing rule and add it as a true Ltac definition. *) - let patt = make_patt rem in - let vars = List.map make_var rem in - let vars = mlexpr_of_list (mlexpr_of_option mlexpr_of_ident) vars in - let entry = mlexpr_of_string s in - let se = <:expr< { Tacexpr.mltac_tactic = $entry$; Tacexpr.mltac_plugin = $plugin_name$ } >> in - let ml = <:expr< { Tacexpr.mltac_name = $se$; Tacexpr.mltac_index = 0 } >> in - let name = mlexpr_of_string name in - let tac = match rem with - | [] -> - (** Special handling of tactics without arguments: such tactics do not do - a Proofview.Goal.nf_enter to compute their arguments. It matters for some - whole-prof tactics like [shelve_unifiable]. *) - <:expr< fun _ $lid:"ist"$ -> $tac$ >> - | _ -> - let f = GramCompat.make_fun loc [patt, vala None, <:expr< fun $lid:"ist"$ -> $tac$ >>] in - <:expr< Tacinterp.lift_constr_tac_to_ml_tac $vars$ $f$ >> - in - (** Arguments are not passed directly to the ML tactic in the TacML node, - the ML tactic retrieves its arguments in the [ist] environment instead. - This is the rôle of the [lift_constr_tac_to_ml_tac] function. *) - let body = <:expr< Tacexpr.TacFun ($vars$, Tacexpr.TacML ($dloc$, $ml$, [])) >> in - let name = <:expr< Names.Id.of_string $name$ >> in - declare_str_items loc - [ <:str_item< do { - let obj () = Tacenv.register_ltac True False $name$ $body$ in - let () = Tacenv.register_ml_tactic $se$ [|$tac$|] in - Mltop.declare_cache_obj obj $plugin_name$ } >> - ] -| _ -> - (** Otherwise we add parsing and printing rules to generate a call to a - TacML tactic. *) - let entry = mlexpr_of_string s in - let se = <:expr< { Tacexpr.mltac_tactic = $entry$; Tacexpr.mltac_plugin = $plugin_name$ } >> in - let gl = mlexpr_of_clause cl in - let obj = <:expr< fun () -> Tacentries.add_ml_tactic_notation $se$ $gl$ >> in - declare_str_items loc - [ <:str_item< do { - Tacenv.register_ml_tactic $se$ (Array.of_list $make_fun_clauses loc s cl$); - Mltop.declare_cache_obj $obj$ $plugin_name$; } >> - ] + let wit = <:expr< $lid:"wit_"^e$ >> in + <:expr< Extend.TUentryl (Genarg.get_arg_tag $wit$) $mlexpr_of_int l$>> + +let rec mlexpr_of_clause = function +| [] -> <:expr< TyNil >> +| ExtTerminal s :: cl -> <:expr< TyIdent($str:s$, $mlexpr_of_clause cl$) >> +| ExtNonTerminal(g,None) :: cl -> + <:expr< TyAnonArg(Loc.tag($mlexpr_of_symbol g$), $mlexpr_of_clause cl$) >> +| ExtNonTerminal(g,Some id) :: cl -> + <:expr< TyArg(Loc.tag($mlexpr_of_symbol g$, $mlexpr_of_ident id$), $mlexpr_of_clause cl$) >> + +let rec binders_of_clause e = function +| [] -> <:expr< fun ist -> $e$ >> +| ExtNonTerminal(_,None) :: cl -> binders_of_clause e cl +| ExtNonTerminal(_,Some id) :: cl -> <:expr< fun $lid:id$ -> $binders_of_clause e cl$ >> +| _ :: cl -> binders_of_clause e cl open Pcaml -open PcamlSig (* necessary for camlp4 *) EXTEND GLOBAL: str_item; str_item: [ [ "TACTIC"; "EXTEND"; s = tac_name; - c = OPT [ "CLASSIFIED"; "BY"; c = LIDENT -> <:expr< $lid:c$ >> ]; + level = OPT [ "AT"; UIDENT "LEVEL"; level = INT -> level ]; OPT "|"; l = LIST1 tacrule SEP "|"; "END" -> - declare_tactic loc s c l ] ] + let level = match level with Some i -> int_of_string i | None -> 0 in + let level = mlexpr_of_int level in + let l = <:expr< Tacentries.($mlexpr_of_list (fun x -> x) l$) >> in + declare_str_items loc [ <:str_item< Tacentries.tactic_extend $plugin_name$ $str:s$ ~{ level = $level$ } $l$ >> ] ] ] ; tacrule: [ [ "["; l = LIST1 tacargs; "]"; - c = OPT [ "=>"; "["; c = Pcaml.expr; "]" -> c ]; "->"; "["; e = Pcaml.expr; "]" -> - (match l with - | ExtNonTerminal _ :: _ -> - (* En attendant la syntaxe de tacticielles *) - failwith "Tactic syntax must start with an identifier" - | _ -> (l,c,e)) + <:expr< TyML($mlexpr_of_clause l$, $binders_of_clause e l$) >> ] ] ; + tacargs: [ [ e = LIDENT; "("; s = LIDENT; ")" -> let e = parse_user_entry e "" in - ExtNonTerminal (e, s) + ExtNonTerminal (e, Some s) | e = LIDENT; "("; s = LIDENT; ","; sep = STRING; ")" -> let e = parse_user_entry e sep in - ExtNonTerminal (e, s) + ExtNonTerminal (e, Some s) + | e = LIDENT -> + let e = parse_user_entry e "" in + ExtNonTerminal (e, None) | s = STRING -> let () = if s = "" then failwith "Empty terminal." in ExtTerminal s |