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(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2016 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
open Names
open Libnames
open Pcoq
open Pcoq.Prim
let prim_kw = ["{"; "}"; "["; "]"; "("; ")"; "'"]
let _ = List.iter CLexer.add_keyword prim_kw
let local_make_qualid l id = make_qualid (DirPath.make l) id
let my_int_of_string loc s =
try
let n = int_of_string s in
(* To avoid Array.make errors (that e.g. Undo uses), we set a *)
(* more restricted limit than int_of_string does *)
if n > 1024 * 2048 then raise Exit;
n
with Failure _ | Exit ->
CErrors.user_err ~loc (Pp.str "Cannot support a so large number.")
GEXTEND Gram
GLOBAL:
bigint natural integer identref name ident var preident
fullyqualid qualid reference dirpath ne_lstring
ne_string string lstring pattern_ident pattern_identref by_notation smart_global;
preident:
[ [ s = IDENT -> s ] ]
;
ident:
[ [ s = IDENT -> Id.of_string s ] ]
;
pattern_ident:
[ [ LEFTQMARK; id = ident -> id ] ]
;
pattern_identref:
[ [ id = pattern_ident -> Loc.tag ~loc:!@loc id ] ]
;
var: (* as identref, but interpret as a term identifier in ltac *)
[ [ id = ident -> Loc.tag ~loc:!@loc id ] ]
;
identref:
[ [ id = ident -> Loc.tag ~loc:!@loc id ] ]
;
field:
[ [ s = FIELD -> Id.of_string s ] ]
;
fields:
[ [ id = field; (l,id') = fields -> (l@[id],id')
| id = field -> ([],id)
] ]
;
fullyqualid:
[ [ id = ident; (l,id')=fields -> Loc.tag ~loc:!@loc @@ id::List.rev (id'::l)
| id = ident -> Loc.tag ~loc:!@loc [id]
] ]
;
basequalid:
[ [ id = ident; (l,id')=fields -> local_make_qualid (l@[id]) id'
| id = ident -> qualid_of_ident id
] ]
;
name:
[ [ IDENT "_" -> Loc.tag ~loc:!@loc Anonymous
| id = ident -> Loc.tag ~loc:!@loc @@ Name id ] ]
;
reference:
[ [ id = ident; (l,id') = fields ->
Qualid (Loc.tag ~loc:!@loc @@ local_make_qualid (l@[id]) id')
| id = ident -> Ident (Loc.tag ~loc:!@loc id)
] ]
;
by_notation:
[ [ s = ne_string; sc = OPT ["%"; key = IDENT -> key ] -> Loc.tag ~loc:!@loc (s, sc) ] ]
;
smart_global:
[ [ c = reference -> Misctypes.AN c
| ntn = by_notation -> Misctypes.ByNotation ntn ] ]
;
qualid:
[ [ qid = basequalid -> Loc.tag ~loc:!@loc qid ] ]
;
ne_string:
[ [ s = STRING ->
if s="" then CErrors.user_err ~loc:!@loc (Pp.str"Empty string."); s
] ]
;
ne_lstring:
[ [ s = ne_string -> Loc.tag ~loc:!@loc s ] ]
;
dirpath:
[ [ id = ident; l = LIST0 field ->
DirPath.make (List.rev (id::l)) ] ]
;
string:
[ [ s = STRING -> s ] ]
;
lstring:
[ [ s = string -> (Loc.tag ~loc:!@loc s) ] ]
;
integer:
[ [ i = INT -> my_int_of_string (!@loc) i
| "-"; i = INT -> - my_int_of_string (!@loc) i ] ]
;
natural:
[ [ i = INT -> my_int_of_string (!@loc) i ] ]
;
bigint: (* Negative numbers are dealt with specially *)
[ [ i = INT -> (Bigint.of_string i) ] ]
;
END
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