1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2012 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(*i camlp4deps: "tools/compat5b.cmo" i*)
open Util
open Genarg
open Q_util
open Q_coqast
open Argextend
open Pcoq
open Extrawit
open Egrammar
open Compat
let rec make_patt = function
| [] -> <:patt< [] >>
| GramNonTerminal(loc',_,_,Some p)::l ->
let p = Names.string_of_id p in
<:patt< [ $lid:p$ :: $make_patt l$ ] >>
| _::l -> make_patt l
let rec make_when loc = function
| [] -> <:expr< True >>
| GramNonTerminal(loc',t,_,Some p)::l ->
let p = Names.string_of_id p in
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_let e = function
| [] -> e
| GramNonTerminal(loc,t,_,Some p)::l ->
let p = Names.string_of_id p in
let loc = join_loc loc (MLast.loc_of_expr e) in
let e = make_let e l in
let v = <:expr< Genarg.out_gen $make_wit loc t$ $lid:p$ >> in
<:expr< let $lid:p$ = $v$ in $e$ >>
| _::l -> make_let e l
let rec extract_signature = function
| [] -> []
| GramNonTerminal (_,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_clause (pt,e) =
(make_patt pt,
vala (Some (make_when (MLast.loc_of_expr e) pt)),
make_let e pt)
let make_fun_clauses loc s l =
check_unicity s l;
Compat.make_fun loc (List.map make_clause l)
let rec make_args = function
| [] -> <:expr< [] >>
| GramNonTerminal(loc,t,_,Some p)::l ->
let p = Names.string_of_id p in
<:expr< [ Genarg.in_gen $make_wit loc t$ $lid:p$ :: $make_args l$ ] >>
| _::l -> make_args l
let rec make_eval_tactic e = function
| [] -> e
| GramNonTerminal(loc,tag,_,Some p)::l when is_tactic_genarg tag ->
let p = Names.string_of_id p in
let loc = join_loc loc (MLast.loc_of_expr e) in
let e = make_eval_tactic e l in
<:expr< let $lid:p$ = $lid:p$ in $e$ >>
| _::l -> make_eval_tactic e l
let rec make_fun e = function
| [] -> e
| GramNonTerminal(loc,_,_,Some p)::l ->
let p = Names.string_of_id p in
<:expr< fun $lid:p$ -> $make_fun e l$ >>
| _::l -> make_fun e l
let mlexpr_terminals_of_grammar_tactic_prod_item_expr = function
| GramTerminal s -> <:expr< Some $mlexpr_of_string s$ >>
| GramNonTerminal (loc,nt,_,sopt) -> <:expr< None >>
let make_prod_item = function
| GramTerminal s -> <:expr< Egrammar.GramTerminal $str:s$ >>
| GramNonTerminal (loc,nt,g,sopt) ->
<:expr< Egrammar.GramNonTerminal $default_loc$ $mlexpr_of_argtype loc nt$
$mlexpr_of_prod_entry_key g$ $mlexpr_of_option mlexpr_of_ident sopt$ >>
let mlexpr_of_clause =
mlexpr_of_list (fun (a,b) -> mlexpr_of_list make_prod_item a)
let rec make_tags loc = function
| [] -> <:expr< [] >>
| GramNonTerminal(loc',t,_,Some p)::l ->
let l = make_tags loc l in
let loc = join_loc loc' loc in
let t = mlexpr_of_argtype loc' t in
<:expr< [ $t$ :: $l$ ] >>
| _::l -> make_tags loc l
let make_one_printing_rule se (pt,e) =
let level = mlexpr_of_int 0 in (* only level 0 supported here *)
let loc = MLast.loc_of_expr e in
let prods = mlexpr_of_list mlexpr_terminals_of_grammar_tactic_prod_item_expr pt in
<:expr< ($se$, $make_tags loc pt$, ($level$, $prods$)) >>
let make_printing_rule se = mlexpr_of_list (make_one_printing_rule se)
let rec possibly_empty_subentries loc = function
| [] -> []
| (s,prodsl) :: l ->
let rec aux = function
| [] -> (false,<:expr< None >>)
| prods :: rest ->
try
let l = List.map (function
| GramNonTerminal(_,(List0ArgType _|
OptArgType _|
ExtraArgType _ as t),_,_)->
(* This possibly parses epsilon *)
let rawwit = make_rawwit loc t in
<:expr< match Genarg.default_empty_value $rawwit$ with
[ None -> failwith ""
| Some v ->
Tacinterp.intern_genarg Tacinterp.fully_empty_glob_sign
(Genarg.in_gen $rawwit$ v) ] >>
| GramTerminal _ | GramNonTerminal(_,_,_,_) ->
(* This does not parse epsilon (this Exit is static time) *)
raise Exit) prods in
if has_extraarg prods then
(true,<:expr< try Some $mlexpr_of_list (fun x -> x) l$
with [ Failure "" -> $snd (aux rest)$ ] >>)
else
(true, <:expr< Some $mlexpr_of_list (fun x -> x) l$ >>)
with Exit -> aux rest in
let (nonempty,v) = aux prodsl in
if nonempty then (s,v) :: possibly_empty_subentries loc l
else possibly_empty_subentries loc l
let possibly_atomic loc prods =
let l = list_map_filter (function
| GramTerminal s :: l, _ -> Some (s,l)
| _ -> None) prods in
possibly_empty_subentries loc (list_factorize_left l)
let declare_tactic loc s cl =
let se = mlexpr_of_string s in
let pp = make_printing_rule se 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 $mlexpr_of_string s$ $make_args p$ $make_eval_tactic e p$
>>
p in
<:str_item< value $lid:stac$ = $e$ >>
in
let hidden = if List.length cl = 1 then List.map hide_tac cl else [] in
let atomic_tactics =
mlexpr_of_list (mlexpr_of_pair mlexpr_of_string (fun x -> x))
(possibly_atomic loc cl) in
declare_str_items loc
(hidden @
[ <:str_item< do {
try
let _=Tacinterp.add_tactic $se$ $make_fun_clauses loc s cl$ in
List.iter
(fun (s,l) -> match l with
[ Some l ->
Tacinterp.add_primitive_tactic s
(Tacexpr.TacAtom($default_loc$,
Tacexpr.TacExtend($default_loc$,$se$,l)))
| None -> () ])
$atomic_tactics$
with [ e when Errors.noncritical e ->
Pp.msg_warning
(Stream.iapp
(Pp.str ("Exception in tactic extend " ^ $se$ ^": "))
(Errors.print e)) ];
Egrammar.extend_tactic_grammar $se$ $gl$;
List.iter Pptactic.declare_extra_tactic_pprule $pp$; } >>
])
open Pcaml
open PcamlSig
EXTEND
GLOBAL: str_item;
str_item:
[ [ "TACTIC"; "EXTEND"; s = tac_name;
OPT "|"; l = LIST1 tacrule SEP "|";
"END" ->
declare_tactic loc s l ] ]
;
tacrule:
[ [ "["; l = LIST1 tacargs; "]"; "->"; "["; e = Pcaml.expr; "]"
->
if match List.hd l with GramNonTerminal _ -> true | _ -> false then
(* En attendant la syntaxe de tacticielles *)
failwith "Tactic syntax must start with an identifier";
(l,e)
] ]
;
tacargs:
[ [ e = LIDENT; "("; s = LIDENT; ")" ->
let t, g = interp_entry_name false None e "" in
GramNonTerminal (loc, t, g, Some (Names.id_of_string s))
| e = LIDENT; "("; s = LIDENT; ","; sep = STRING; ")" ->
let t, g = interp_entry_name false None e sep in
GramNonTerminal (loc, t, g, Some (Names.id_of_string s))
| s = STRING ->
if s = "" then Util.user_err_loc (loc,"",Pp.str "Empty terminal.");
GramTerminal s
] ]
;
tac_name:
[ [ s = LIDENT -> s
| s = UIDENT -> s
] ]
;
END
|
