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|
(***********************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA-Rocquencourt & LRI-CNRS-Orsay *)
(* \VV/ *************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(***********************************************************************)
(* $Id$ *)
open Genarg
open Q_util
open Q_coqast
let join_loc (deb1,_) (_,fin2) = (deb1,fin2)
let loc = (0,0)
let default_loc = <:expr< (0,0) >>
type grammar_tactic_production_expr =
| TacTerm of string
| TacNonTerm of Util.loc * Genarg.argument_type * MLast.expr * string option
let rec make_patt = function
| [] -> <:patt< [] >>
| TacNonTerm(loc',_,_,Some p)::l ->
<:patt< [ $lid:p$ :: $make_patt l$ ] >>
| _::l -> make_patt l
let rec make_when loc = function
| [] -> <:expr< True >>
| TacNonTerm(loc',t,_,Some p)::l ->
let l = make_when loc l in
let loc = join_loc loc' loc in
let t = mlexpr_of_argtype loc' t in
<:expr< Genarg.genarg_tag $lid:p$ = $t$ && $l$ >>
| _::l -> make_when loc l
let rec make_wit loc = function
| BoolArgType -> <:expr< Genarg.wit_bool >>
| IntArgType -> <:expr< Genarg.wit_int >>
| IntOrVarArgType -> <:expr< Genarg.wit_int_or_var >>
| StringArgType -> <:expr< Genarg.wit_string >>
| PreIdentArgType -> <:expr< Genarg.wit_pre_ident >>
| IdentArgType -> <:expr< Genarg.wit_ident >>
| RefArgType -> <:expr< Genarg.wit_ref >>
| QuantHypArgType -> <:expr< Genarg.wit_quant_hyp >>
| SortArgType -> <:expr< Genarg.wit_sort >>
| ConstrArgType -> <:expr< Genarg.wit_constr >>
| ConstrMayEvalArgType -> <:expr< Genarg.wit_constr_may_eval >>
| TacticArgType -> <:expr< Genarg.wit_tactic >>
| RedExprArgType -> <:expr< Genarg.wit_red_expr >>
| CastedOpenConstrArgType -> <:expr< Genarg.wit_casted_open_constr >>
| ConstrWithBindingsArgType -> <:expr< Genarg.wit_constr_with_bindings >>
| List0ArgType t -> <:expr< Genarg.wit_list0 $make_wit loc t$ >>
| List1ArgType t -> <:expr< Genarg.wit_list1 $make_wit loc t$ >>
| OptArgType t -> <:expr< Genarg.wit_opt $make_wit loc t$ >>
| PairArgType (t1,t2) ->
<:expr< Genarg.wit_pair $make_wit loc t1$ $make_wit loc t2$ >>
| ExtraArgType s -> <:expr< $lid:"wit_"^s$ >>
let rec make_let e = function
| [] -> e
| TacNonTerm(loc,t,_,Some p)::l ->
let loc = join_loc loc (MLast.loc_of_expr e) in
let e = make_let e l in
<:expr< let $lid:p$ = Genarg.out_gen $make_wit loc t$ $lid:p$ in $e$ >>
| _::l -> make_let e l
let add_clause s (_,pt,e) l =
let p = make_patt pt in
let w = Some (make_when (MLast.loc_of_expr e) pt) in
(p, w, make_let e pt)::l
let rec extract_signature = function
| [] -> []
| TacNonTerm (_,t,_,_) :: l -> t :: extract_signature l
| _::l -> extract_signature l
let check_unicity s l =
let l' = List.map (fun (_,l,_) -> extract_signature l) l in
if not (Util.list_distinct l') then
Pp.warning_with Pp_control.err_ft
("Two distinct rules of tactic entry "^s^" have the same\n"^
"non-terminals in the same order: put them in distinct tactic entries")
let make_clauses s l =
check_unicity s l;
let default =
(<:patt< _ >>,None,<:expr< failwith "Tactic extension: cannot occur" >>) in
List.fold_right (add_clause s) l [default]
let rec make_args = function
| [] -> <:expr< [] >>
| TacNonTerm(loc,t,_,Some p)::l ->
<:expr< [ Genarg.in_gen $make_wit loc t$ $lid:p$ :: $make_args l$ ] >>
| _::l -> make_args l
let rec make_fun e = function
| [] -> e
| TacNonTerm(loc,_,_,Some p)::l ->
<:expr< fun $lid:p$ -> $make_fun e l$ >>
| _::l -> make_fun e l
let mlexpr_of_grammar_production = function
| TacTerm s ->
<:expr< Egrammar.TacTerm $mlexpr_of_string s$ >>
| TacNonTerm (loc,nt,g,sopt) ->
<:expr< Egrammar.TacNonTerm $default_loc$ ($g$,$mlexpr_of_argtype loc nt$) $mlexpr_of_option mlexpr_of_string sopt$ >>
let mlexpr_of_semi_clause =
mlexpr_of_pair mlexpr_of_string (mlexpr_of_list mlexpr_of_grammar_production)
let mlexpr_of_clause =
mlexpr_of_list (fun (a,b,c) -> mlexpr_of_semi_clause (a,b))
let add_printing_clause (s,pt,e) l =
let p = make_patt pt in
let w = Some (make_when (MLast.loc_of_expr e) pt) in
(p, w, mlexpr_of_semi_clause (s,pt))::l
let make_printing_rule l =
let default =
(<:patt< _ >>,None,<:expr< failwith "Tactic extension: cannot occur" >>) in
List.fold_right add_printing_clause l [default]
let new_tac_ext (s,cl) =
(String.lowercase s, List.map
(fun (s,l,e) ->
(String.lowercase s, List.map
(function TacTerm s -> TacTerm (String.lowercase s)
| t -> t) l,
e))
cl)
let declare_tactic_v7 loc s cl =
let pl = make_printing_rule cl in
let gl = mlexpr_of_clause cl in
let hide_tac (_,p,e) =
(* reste a definir les fonctions cachees avec des noms frais *)
let stac = let s = "h_"^s in s.[2] <- Char.lowercase s.[2]; s in
let e =
make_fun
<:expr<
Refiner.abstract_extended_tactic $mlexpr_of_string s$ $make_args p$ $e$
>>
p in
<:str_item< value $lid:stac$ = $e$ >>
in
let se = mlexpr_of_string s in
<:str_item<
declare
open Pcoq;
Egrammar.extend_tactic_grammar $se$ $gl$;
let pp = fun [ $list:pl$ ] in
Pptactic.declare_extra_tactic_pprule False $se$ pp pp;
end
>>
let declare_tactic loc s cl =
let (s',cl') = new_tac_ext (s,cl) in
let pl' = make_printing_rule cl' in
let gl' = mlexpr_of_clause cl' in
let se' = mlexpr_of_string s' in
let pl = make_printing_rule cl in
let gl = mlexpr_of_clause cl in
let hide_tac (_,p,e) =
(* reste a definir les fonctions cachees avec des noms frais *)
let stac = "h_"^s' in
let e =
make_fun
<:expr<
Refiner.abstract_extended_tactic $mlexpr_of_string s'$ $make_args p$ $e$
>>
p in
<:str_item< value $lid:stac$ = $e$ >>
in
let se = mlexpr_of_string s in
<:str_item<
declare
open Pcoq;
declare $list:List.map hide_tac cl'$ end;
try
Refiner.add_tactic $se'$ (fun [ $list:make_clauses s' cl'$ ])
with e -> Pp.pp (Cerrors.explain_exn e);
Egrammar.extend_tactic_grammar $se'$ $gl'$;
let pp' = fun [ $list:pl'$ ] in
Pptactic.declare_extra_tactic_pprule True $se'$ pp' pp';
Egrammar.extend_tactic_grammar $se'$ $gl$;
let pp = fun [ $list:pl$ ] in
Pptactic.declare_extra_tactic_pprule False $se'$ pp pp;
end
>>
open Vernacexpr
open Pcoq
let rec interp_entry_name loc s =
let l = String.length s in
if l > 8 & String.sub s 0 3 = "ne_" & String.sub s (l-5) 5 = "_list" then
let t, g = interp_entry_name loc (String.sub s 3 (l-8)) in
List1ArgType t, <:expr< Gramext.Slist1 $g$ >>
else if l > 5 & String.sub s (l-5) 5 = "_list" then
let t, g = interp_entry_name loc (String.sub s 0 (l-5)) in
List0ArgType t, <:expr< Gramext.Slist0 $g$ >>
else if l > 4 & String.sub s (l-4) 4 = "_opt" then
let t, g = interp_entry_name loc (String.sub s 0 (l-4)) in
OptArgType t, <:expr< Gramext.Sopt $g$ >>
else
let t, se =
match Pcoq.entry_type (Pcoq.get_univ "prim") s with
| Some _ as x -> x, <:expr< Prim. $lid:s$ >>
| None ->
match Pcoq.entry_type (Pcoq.get_univ "constr") s with
| Some _ as x -> x, <:expr< Constr. $lid:s$ >>
| None ->
match Pcoq.entry_type (Pcoq.get_univ "tactic") s with
| Some _ as x -> x, <:expr< Tactic. $lid:s$ >>
| None -> None, <:expr< $lid:s$ >> in
let t =
match t with
| Some t -> t
| None ->
(* Pp.warning_with Pp_control.err_ft
("Unknown primitive grammar entry: "^s);*)
ExtraArgType s
in t, <:expr< Gramext.Snterm (Pcoq.Gram.Entry.obj $se$) >>
open Pcaml
EXTEND
GLOBAL: str_item;
str_item:
[ [ "TACTIC"; "EXTEND"; s = [ UIDENT | LIDENT ];
OPT "|"; l = LIST1 tacrule SEP "|";
"END" ->
declare_tactic loc s l
| "V7"; "TACTIC"; "EXTEND"; s = [ UIDENT | LIDENT ];
OPT "|"; l = LIST1 tacrule SEP "|";
"END" ->
declare_tactic_v7 loc s l ] ]
;
tacrule:
[ [ "["; s = STRING; l = LIST0 tacargs; "]"; "->"; "["; e = Pcaml.expr; "]"
-> (s,l,e)
] ]
;
tacargs:
[ [ e = LIDENT; "("; s = LIDENT; ")" ->
let t, g = interp_entry_name loc e in
TacNonTerm (loc, t, g, Some s)
| s = STRING ->
TacTerm s
] ]
;
END
|
