blob: 914f86761bd4cbfbc1c9cd28903d3f23b750da48 (
plain)
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
|
(* $Id$ *)
Require Export Datatypes.
(* Parsing of things in Datatypes.v *)
Grammar constr constr1 :=
pair_expl [ "<" lconstr($l1) "," lconstr($c2) ">" "(" lconstr($c3) ","
lconstr($c4) ")" ] -> [ (pair $l1 $c2 $c3 $c4) ]
| fst_expl [ "<" lconstr($l1) "," lconstr($c2) ">" "Fst" "("
lconstr($l) ")" ] -> [ (fst $l1 $c2 $l) ]
| snd_expl [ "<" lconstr($l1) "," lconstr($c2) ">" "Snd" "("
lconstr($l) ")" ] -> [ (snd $l1 $c2 $l) ]
with constr0 :=
pair [ "(" lconstr($lc1) "," lconstr($lc2) ")" ] ->
[ (pair ? ? $lc1 $lc2) ]
with constr3 :=
prod [ constr2($c1) "*" constr3($c2) ] -> [ (prod $c1 $c2) ].
(* Pretty-printing of things in Datatypes.v *)
Syntax constr
level 4:
sum [ (sum $t1 $t2) ] -> [ [<hov 0> $t1:E [0 1] "+" $t2:L ] ]
;
level 3:
product [ (prod $t1 $t2) ] -> [ [<hov 0> $t1:L [0 1] "*" $t2:E ] ]
;
level 1:
pair
[ (pair $_ $_ $t3 $t4) ] -> [ [<hov 0> "(" $t3:E ","[0 1] $t4:E ")" ] ]
| fst_imp [ (fst $_ $_ $t2) ] -> [ [<hov 0> "(Fst " $t2:E ")"] ]
| snd_imp [ (snd $_ $_ $t2) ] -> [ [<hov 0> "(Snd " $t2:E ")"] ].
|
