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|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(* $Id$ *)
open Pp
open Util
open Ast
open Topconstr
open Rawterm
open Tacexpr
open Vernacexpr
open Ast
open Pcoq
open Prim
open Tactic
type let_clause_kind =
| LETTOPCLAUSE of Names.identifier * constr_expr
| LETCLAUSE of
(Names.identifier Util.located * raw_tactic_expr option * raw_tactic_arg)
let fail_default_value = Genarg.ArgArg 0
let out_letin_clause loc = function
| LETTOPCLAUSE _ -> user_err_loc (loc, "", (str "Syntax Error"))
| LETCLAUSE (id,c,d) -> (id,c,d)
let make_letin_clause loc = List.map (out_letin_clause loc)
let arg_of_expr = function
TacArg a -> a
| e -> Tacexp (e:raw_tactic_expr)
(* Tactics grammar rules *)
if !Options.v7 then
GEXTEND Gram
GLOBAL: tactic Vernac_.command tactic_arg;
(*
GLOBAL: tactic_atom tactic_atom0 tactic_expr input_fun;
*)
input_fun:
[ [ l = base_ident -> Some l
| "()" -> None ] ]
;
let_clause:
[ [ id = identref; "="; te = tactic_letarg -> LETCLAUSE (id, None, te)
| id = base_ident; ":"; c = Constr.constr; ":="; "Proof" ->
LETTOPCLAUSE (id, c)
| id = identref; ":"; c = constrarg; ":="; te = tactic_letarg ->
LETCLAUSE (id, Some (TacArg(ConstrMayEval c)), te)
| id = base_ident; ":"; c = Constr.constr ->
LETTOPCLAUSE (id, c) ] ]
;
rec_clause:
[ [ name = identref; it = LIST1 input_fun; "->"; body = tactic_expr ->
(name,(it,body)) ] ]
;
match_pattern:
[ [ id = Constr.constr_pattern; "["; pc = Constr.constr_pattern; "]" ->
let (_,s) = coerce_to_id id in Subterm (Some s, pc)
| "["; pc = Constr.constr_pattern; "]" -> Subterm (None,pc)
| pc = Constr.constr_pattern -> Term pc ] ]
;
match_hyps:
[ [ na = name; ":"; mp = match_pattern -> Hyp (na, mp) ] ]
;
match_context_rule:
[ [ "["; largs = LIST0 match_hyps SEP ";"; "|-"; mp = match_pattern; "]";
"->"; te = tactic_expr -> Pat (largs, mp, te)
| IDENT "_"; "->"; te = tactic_expr -> All 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 -> Pat ([],mp,te)
| IDENT "_"; "->"; te = tactic_expr -> All te ] ]
;
match_list:
[ [ mrl = LIST1 match_rule SEP "|" -> mrl
| "|"; mrl = LIST1 match_rule SEP "|" -> mrl ] ]
;
tactic_expr:
[ [ ta = tactic_expr5 -> ta ] ]
;
tactic_expr5:
[ [ ta0 = tactic_expr5; ";"; ta1 = tactic_expr4 -> TacThen (ta0, ta1)
| ta = tactic_expr5; ";"; "["; lta = LIST0 tactic_expr SEP "|"; "]" ->
TacThens (ta, lta)
| y = tactic_expr4 -> y ] ]
;
tactic_expr4:
[ [ ta = tactic_expr3 -> ta ] ]
;
tactic_expr3:
[ [ IDENT "Try"; ta = tactic_expr3 -> TacTry ta
| IDENT "Do"; n = int_or_var; ta = tactic_expr3 -> TacDo (n,ta)
| IDENT "Repeat"; ta = tactic_expr3 -> TacRepeat ta
| IDENT "Progress"; ta = tactic_expr3 -> TacProgress ta
| IDENT "Info"; tc = tactic_expr3 -> TacInfo tc
| ta = tactic_expr2 -> ta ] ]
;
tactic_expr2:
[ [ ta0 = tactic_atom; "Orelse"; ta1 = tactic_expr3 -> TacOrelse (ta0,ta1)
| ta = tactic_atom -> ta ] ]
;
tactic_atom:
[ [ IDENT "Fun"; it = LIST1 input_fun ; "->"; body = tactic_expr ->
TacFun (it,body)
| IDENT "Rec"; rc = rec_clause ->
warning "'Rec f ...' is obsolete; use 'Rec f ... In f' instead";
TacLetRecIn ([rc],TacArg (Reference (Libnames.Ident (fst rc))))
| IDENT "Rec"; rc = rec_clause; rcl = LIST0 rec_clause SEP "And";
[IDENT "In" | "in"]; body = tactic_expr -> TacLetRecIn (rc::rcl,body)
| IDENT "Let"; llc = LIST1 let_clause SEP "And"; IDENT "In";
u = tactic_expr -> TacLetIn (make_letin_clause loc llc,u)
| IDENT "Match"; IDENT "Context"; IDENT "With"; mrl = match_context_list
-> TacMatchContext (false,false,mrl)
| IDENT "Match"; IDENT "Reverse"; IDENT "Context"; IDENT "With"; mrl = match_context_list
-> TacMatchContext (false,true,mrl)
| IDENT "Match"; c = constrarg; IDENT "With"; mrl = match_list ->
TacMatch (false,TacArg(ConstrMayEval c),mrl)
(*To do: put Abstract in Refiner*)
| IDENT "Abstract"; tc = tactic_expr -> TacAbstract (tc,None)
| IDENT "Abstract"; tc = tactic_expr; "using"; s = base_ident ->
TacAbstract (tc,Some s)
(*End of To do*)
| IDENT "First" ; "["; l = LIST0 tactic_expr SEP "|"; "]" ->
TacFirst l
| IDENT "Solve" ; "["; l = LIST0 tactic_expr SEP "|"; "]" ->
TacSolve l
| IDENT "Idtac" ; s = [ s = STRING -> s | -> ""] -> TacId s
| IDENT "Fail"; n = [ n = int_or_var -> n | -> fail_default_value ];
s = [ s = STRING -> s | -> ""] -> TacFail (n,s)
| st = simple_tactic -> TacAtom (loc,st)
| "("; a = tactic_expr; ")" -> a
| a = tactic_arg -> TacArg a
] ]
;
(* Tactic arguments *)
tactic_arg:
[ [ ta = tactic_arg1 -> ta ] ]
;
tactic_letarg:
(* Cannot be merged with tactic_arg1, since then "In"/"And" are
parsed as lqualid! *)
[ [ IDENT "Eval"; rtc = red_expr; "in"; c = Constr.constr ->
ConstrMayEval (ConstrEval (rtc,c))
| IDENT "Inst"; id = identref; "["; c = Constr.constr; "]" ->
ConstrMayEval (ConstrContext (id,c))
| IDENT "Check"; c = Constr.constr ->
ConstrMayEval (ConstrTypeOf c)
| IDENT "FreshId"; s = OPT STRING -> TacFreshId s
| IDENT "ipattern"; ":"; ipat = simple_intropattern -> IntroPattern ipat
| r = reference -> Reference r
| ta = tactic_arg0 -> ta ] ]
;
tactic_arg1:
[ [ IDENT "Eval"; rtc = red_expr; "in"; c = Constr.constr ->
ConstrMayEval (ConstrEval (rtc,c))
| IDENT "Inst"; id = identref; "["; c = Constr.constr; "]" ->
ConstrMayEval (ConstrContext (id,c))
| IDENT "Check"; c = Constr.constr ->
ConstrMayEval (ConstrTypeOf c)
| IDENT "FreshId"; s = OPT STRING -> TacFreshId s
| IDENT "ipattern"; ":"; ipat = simple_intropattern -> IntroPattern ipat
| r = reference; la = LIST1 tactic_arg0 -> TacCall (loc,r,la)
| r = reference -> Reference r
| ta = tactic_arg0 -> ta ] ]
;
tactic_arg0:
[ [ "("; a = tactic_expr; ")" -> arg_of_expr a
| "()" -> TacVoid
| r = reference -> Reference r
| n = integer -> Integer n
| id = METAIDENT -> MetaIdArg (loc,id)
| "?" -> ConstrMayEval (ConstrTerm (CHole loc))
| "?"; n = natural -> ConstrMayEval (ConstrTerm (CPatVar (loc,(false,Pattern.patvar_of_int n))))
| "'"; c = Constr.constr -> ConstrMayEval (ConstrTerm c) ] ]
;
(* Definitions for tactics *)
deftok:
[ [ IDENT "Meta"
| IDENT "Tactic" ] ]
;
tacdef_body:
[ [ name = identref; it=LIST1 input_fun; ":="; body = tactic_expr ->
(name, TacFun (it, body))
| name = identref; ":="; body = tactic_expr ->
(name, body) ] ]
;
tactic:
[ [ tac = tactic_expr -> tac ] ]
;
Vernac_.command:
[ [ deftok; "Definition"; b = tacdef_body ->
VernacDeclareTacticDefinition (false, [b])
| IDENT "Recursive"; deftok; "Definition";
l = LIST1 tacdef_body SEP "And" ->
VernacDeclareTacticDefinition (true, l) ] ]
;
END
|
