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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 *)
(***********************************************************************)
(*i $Id$ i*)
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 ")"] ].
|
