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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 camlp4deps: "parsing/grammar.cma" i*)
(* $Id$ *)
open Pp
open Ast
open Pcoq
open Tactic
open Util
(* Tactics grammar rules *)
(* Tactics grammar rules *)
GEXTEND Gram
input_fun:
[ [ l = identarg -> l
| "()" -> <:ast< (VOID) >> ] ]
;
let_clause:
[ [ id = identarg; "="; te=tactic_atom -> <:ast< (LETCLAUSE $id $te) >>
| id = identarg; ":"; c = constrarg; ":="; "Proof" ->
(match c with
| Coqast.Node(_,"COMMAND",[csr]) ->
<:ast< (LETTOPCLAUSE $id (CONSTR $csr)) >>
| _ -> errorlabstrm "Gram.let_clause" [<'sTR "Not a COMMAND">])
| id = identarg; ":"; c = constrarg; ":="; te = tactic_expr ->
<:ast< (LETCUTCLAUSE $id $c $te) >>
| id = identarg; ":"; c = constrarg ->
(match c with
| Coqast.Node(_,"COMMAND",[csr]) ->
<:ast< (LETTOPCLAUSE $id (CONSTR $csr)) >>
| _ -> errorlabstrm "Gram.let_clause" [<'sTR "Not a COMMAND">]) ] ]
;
rec_clause:
[ [ name = identarg; it = LIST1 input_fun; "->"; body = tactic_atom ->
<:ast< (RECCLAUSE $name (FUNVAR ($LIST $it)) $body) >> ] ]
;
match_pattern:
[ [ id = constrarg; "["; pc = constrarg; "]" ->
(match id with
| Coqast.Node(_,"COMMAND",
[Coqast.Node(_,"QUALID",[Coqast.Nvar(_,_) as s])]) ->
<:ast< (SUBTERM $s $pc) >>
| _ ->
errorlabstrm "Gram.match_pattern" [<'sTR "Not a correct SUBTERM">])
| "["; pc = constrarg; "]" -> <:ast< (SUBTERM $pc) >>
| pc = constrarg -> <:ast< (TERM $pc) >> ] ]
;
match_hyps:
[ [ id = identarg; ":"; mp = match_pattern ->
<:ast< (MATCHCONTEXTHYPS $id $mp) >>
| IDENT "_"; ":"; mp = match_pattern ->
<:ast< (MATCHCONTEXTHYPS $mp) >> ] ]
;
match_context_rule:
[ [ "["; largs = LIST0 match_hyps SEP ";"; "|-"; mp = match_pattern; "]";
"->"; te = tactic_expr ->
<:ast< (MATCHCONTEXTRULE ($LIST $largs) $mp $te) >>
| IDENT "_"; "->"; te = tactic_expr -> <:ast< (MATCHCONTEXTRULE $te) >>
] ]
;
match_context_list:
[ [ mrl = LIST1 match_context_rule SEP "|" -> mrl
| "|"; mrl = LIST1 match_context_rule SEP "|" -> mrl ] ]
;
match_rule:
[ [ "["; mp = match_pattern; "]"; "->"; te = tactic_expr ->
<:ast<(MATCHRULE $mp $te)>>
| IDENT "_"; "->"; te = tactic_expr -> <:ast< (MATCHRULE $te) >> ] ]
;
match_list:
[ [ mrl = LIST1 match_rule SEP "|" -> mrl
| "|"; mrl = LIST1 match_rule SEP "|" -> mrl ] ]
;
tactic_expr:
[ [ ta0 = tactic_expr; ";"; ta1 = tactic_expr ->
<:ast< (TACTICLIST $ta0 $ta1) >>
| ta = tactic_expr; ";"; "["; lta = LIST0 tactic_expr SEP "|"; "]" ->
<:ast< (TACTICLIST $ta (TACLIST ($LIST $lta))) >>
| y = tactic_atom0 -> y ] ]
;
tactic_atom0:
[ [ la = LIST1 tactic_atom ->
if (List.length la) = 1 then
let el = List.hd la in <:ast< $el >>
else
<:ast< (APP ($LIST $la)) >> ] ]
;
tactic_atom:
[ [ IDENT "Fun"; it = LIST1 input_fun ; "->"; body = tactic_expr ->
<:ast< (FUN (FUNVAR ($LIST $it)) $body) >>
| IDENT "Rec"; rc = rec_clause -> <:ast< (REC $rc) >>
| IDENT "Rec"; rc = rec_clause; IDENT "In"; body = tactic_expr ->
<:ast< (REC (RECDECL $rc) $body) >>
| IDENT "Rec"; rc = rec_clause; "And";
rcl = LIST1 rec_clause SEP "And"; IDENT "In";
body = tactic_expr ->
<:ast< (REC (RECDECL $rc ($LIST $rcl)) $body) >>
| IDENT "Let"; llc = LIST1 let_clause SEP "And"; IDENT "In";
u = tactic_expr -> <:ast< (LET (LETDECL ($LIST $llc)) $u) >>
| IDENT "Let"; llc = LIST1 let_clause SEP "And" ->
(match llc with
| [Coqast.Node(_,"LETTOPCLAUSE",[id;c])] ->
<:ast< (StartProof "LETTOP" $id $c) >>
| _ -> <:ast< (LETCUT (LETDECL ($LIST $llc))) >>)
| IDENT "Let"; llc = LIST1 let_clause SEP "And";
tb = Vernac_.theorem_body; "Qed" ->
(match llc with
| [Coqast.Node(_,"LETTOPCLAUSE",[id;c])] ->
<:ast< (TheoremProof "LETTOP" $id $c $tb) >>
| _ -> errorlabstrm "Gram.tactic_atom" [<'sTR "Not a LETTOPCLAUSE">])
| IDENT "Match"; IDENT "Context"; IDENT "With"; mrl = match_context_list
-> <:ast< (MATCHCONTEXT ($LIST $mrl)) >>
| IDENT "Match"; com = constrarg; IDENT "With"; mrl = match_list ->
<:ast< (MATCH $com ($LIST $mrl)) >>
| "("; te = tactic_expr; ")" -> te
| "("; te = tactic_expr; tel=LIST1 tactic_expr; ")" ->
<:ast< (APP $te ($LIST $tel)) >>
| IDENT "First" ; "["; l = LIST0 tactic_expr SEP "|"; "]" ->
<:ast<(FIRST ($LIST $l))>>
| IDENT "Info"; tc = tactic_expr -> <:ast< (INFO $tc) >>
| IDENT "Solve" ; "["; l = LIST0 tactic_expr SEP "|"; "]" ->
<:ast<(TCLSOLVE ($LIST $l))>>
| IDENT "Try"; ta0 = tactic_atom; "Orelse"; ta1 = tactic_atom ->
<:ast< (TRY (ORELSE $ta0 $ta1)) >>
| IDENT "Try"; ta = tactic_atom -> <:ast< (TRY $ta) >>
| IDENT "Do"; n = pure_numarg; ta = tactic_atom -> <:ast< (DO $n $ta) >>
| IDENT "Repeat"; ta0 = tactic_atom; "Orelse"; ta1 = tactic_atom ->
<:ast< (REPEAT (ORELSE $ta0 $ta1)) >>
| IDENT "Repeat"; ta = tactic_atom -> <:ast< (REPEAT $ta) >>
| IDENT "Idtac" -> <:ast< (IDTAC) >>
| IDENT "Fail" -> <:ast<(FAIL)>>
| IDENT "Fail"; n = pure_numarg -> <:ast<(FAIL $n)>>
| ta0 = tactic_atom; "Orelse"; ta1 = tactic_atom ->
<:ast< (ORELSE $ta0 $ta1) >>
| IDENT "Progress"; ta = tactic_atom -> <:ast< (PROGRESS $ta) >>
| st = simple_tactic -> st
| tca = tactic_arg -> tca ] ]
;
tactic_arg:
[ [ "()" -> <:ast< (VOID) >>
| n = pure_numarg -> n
| l = Constr.qualid ->
(match l with
| [id] -> id
| _ -> <:ast< (QUALIDARG ($LIST $l)) >>)
| id = Prim.metaident -> id
| "?" -> <:ast< (COMMAND (ISEVAR)) >>
| "?"; n = Prim.number -> <:ast< (COMMAND (META $n)) >>
| IDENT "Eval"; rtc = Tactic.red_tactic; "in"; c = Constr.constr ->
<:ast< (COMMAND (EVAL $c (REDEXP $rtc))) >>
| IDENT "Inst"; id = identarg; "["; c = Constr.constr; "]" ->
<:ast< (COMMAND (CONTEXT $id $c)) >>
| "'"; c = constrarg -> c ] ];
END
|
