path: root/tactics/extraargs.ml4

(************************************************************************)
(*  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        *)
(************************************************************************)

(*i camlp4deps: "parsing/grammar.cma" i*)

(* $Id: extraargs.ml4 9076 2006-08-23 15:05:54Z jforest $ *)

open Pp
open Pcoq
open Genarg
open Names
open Tacexpr
open Tacinterp

(* Rewriting orientation *)

let _ = Metasyntax.add_token_obj "<-"
let _ = Metasyntax.add_token_obj "->"

let pr_orient _prc _prlc _prt = function
  | true -> Pp.mt ()
  | false -> Pp.str " <-"


ARGUMENT EXTEND orient TYPED AS bool PRINTED BY pr_orient
| [ "->" ] -> [ true ]
| [ "<-" ] -> [ false ]
| [ ] -> [ true ]
END

(* For Setoid rewrite *)
let pr_morphism_signature _ _ _ s =
  spc () ++ Setoid_replace.pr_morphism_signature s

ARGUMENT EXTEND morphism_signature
 TYPED AS morphism_signature
 PRINTED BY pr_morphism_signature
  | [ constr(out) ] -> [ [],out ]
  | [ constr(c) "++>" morphism_signature(s) ] ->
       [ let l,out = s in (Some true,c)::l,out ]
  | [ constr(c) "-->" morphism_signature(s) ] ->
       [ let l,out = s in (Some false,c)::l,out ]
  | [ constr(c) "==>" morphism_signature(s) ] ->
       [ let l,out = s in (None,c)::l,out ]
END

let pr_gen prc _prlc _prtac c = prc c

let pr_rawc _prc _prlc _prtac raw = Printer.pr_rawconstr raw

let interp_raw _ _ (t,_) = t

let glob_raw = Tacinterp.intern_constr

let subst_raw = Tacinterp.subst_rawconstr_and_expr

ARGUMENT EXTEND raw
    TYPED AS rawconstr
    PRINTED BY pr_rawc
     
     INTERPRETED BY interp_raw	
     GLOBALIZED BY glob_raw
     SUBSTITUTED BY subst_raw
     
     RAW_TYPED AS constr_expr
     RAW_PRINTED BY pr_gen
     
     GLOB_TYPED AS rawconstr_and_expr
     GLOB_PRINTED BY pr_gen
  [ lconstr(c) ] -> [ c ]
END

type 'id gen_place= ('id * hyp_location_flag,unit) location

type loc_place = identifier Util.located gen_place
type place = identifier gen_place

let pr_gen_place pr_id = function
    ConclLocation () -> Pp.mt ()
  | HypLocation (id,InHyp) -> str "in " ++ pr_id id
  | HypLocation (id,InHypTypeOnly) -> 
      str "in (Type of " ++ pr_id id ++ str ")"
  | HypLocation (id,InHypValueOnly) -> 
      str "in (Value of " ++ pr_id id ++ str ")"

let pr_loc_place _ _ _ = pr_gen_place (fun (_,id) -> Nameops.pr_id id)
let pr_place _ _ _ = pr_gen_place Nameops.pr_id

let intern_place ist = function
    ConclLocation () -> ConclLocation ()
  | HypLocation (id,hl) -> HypLocation (intern_hyp ist id,hl)

let interp_place ist gl = function
    ConclLocation () -> ConclLocation ()
  | HypLocation (id,hl) -> HypLocation (interp_hyp ist gl id,hl)

let subst_place subst pl = pl 

ARGUMENT EXTEND hloc
    TYPED AS place
    PRINTED BY pr_place
    INTERPRETED BY interp_place
    GLOBALIZED BY intern_place
    SUBSTITUTED BY subst_place
    RAW_TYPED AS loc_place
    RAW_PRINTED BY pr_loc_place
    GLOB_TYPED AS loc_place
    GLOB_PRINTED BY pr_loc_place
  [ ] -> 
    [ ConclLocation () ]
  |  [ "in" "|-" "*" ] -> 
    [ ConclLocation () ]
| [ "in" ident(id) ] ->
    [ HypLocation ((Util.dummy_loc,id),InHyp) ]
| [ "in" "(" "Type" "of" ident(id) ")" ] -> 
    [ HypLocation ((Util.dummy_loc,id),InHypTypeOnly) ]
| [ "in" "(" "Value" "of" ident(id) ")" ] -> 
    [ HypLocation ((Util.dummy_loc,id),InHypValueOnly) ]
   
 END







(* Julien: Mise en commun des differentes version de replace with in by *)

let pr_by_arg_tac _prc _prlc prtac opt_c = 
  match opt_c with 
    | None -> mt ()
    | Some t -> spc () ++ hov 2 (str "by" ++ spc () ++ prtac (3,Ppextend.E) t)

ARGUMENT EXTEND by_arg_tac
  TYPED AS tactic_opt
  PRINTED BY pr_by_arg_tac
| [ "by" tactic3(c) ] -> [ Some c ]
| [ ] -> [ None ]
END
 

let pr_in_hyp  pr_id (lo,concl) :  Pp.std_ppcmds = 
  match lo,concl with 
    | Some [],true -> mt ()
    | None,true -> str "in" ++ spc () ++ str "*"
    | None,false -> str "in" ++ spc () ++ str "*" ++ spc () ++ str "|-" 
    | Some l,_ -> 
	str "in" ++ spc () ++ 
	  Util.prlist_with_sep spc pr_id l ++ 
	  match concl with 
	    | true -> spc () ++ str "|-" ++ spc () ++ str "*"
	    | _ -> mt ()


let pr_in_arg_hyp _ _ _ = pr_in_hyp (fun (_,id) -> Ppconstr.pr_id id)

let pr_in_arg_hyp_typed  _ _  _  = pr_in_hyp Ppconstr.pr_id 


let pr_var_list_gen pr_id = Util.prlist_with_sep (fun () -> str ",") pr_id 

let pr_var_list_typed _ _ _ =  pr_var_list_gen Ppconstr.pr_id 

let pr_var_list _ _ _ = pr_var_list_gen (fun (_,id) -> Ppconstr.pr_id id)


ARGUMENT EXTEND comma_var_lne 
  TYPED AS var list 
  PRINTED BY pr_var_list_typed
  RAW_TYPED AS var list 
  RAW_PRINTED BY pr_var_list
  GLOB_TYPED AS var list
  GLOB_PRINTED BY pr_var_list
| [ var(x) ] -> [ [x] ]
| [ var(x) "," comma_var_lne(l) ] -> [x::l]
END

ARGUMENT EXTEND comma_var_l 
  TYPED AS var list 
  PRINTED BY pr_var_list_typed
  RAW_TYPED AS var list 
  RAW_PRINTED BY pr_var_list
  GLOB_TYPED AS var list
  GLOB_PRINTED BY pr_var_list
| [  comma_var_lne(l) ] -> [l]
| [] -> [ [] ]
END

let pr_in_concl _ _ _ = function true -> str "|- " ++ spc () ++ str "*" | _ -> str "|-" 

ARGUMENT EXTEND inconcl  
  TYPED AS bool 
  PRINTED BY pr_in_concl
| [ "|-" "*" ] -> [ true ]
| [ "|-" ] -> [ false ]
END



ARGUMENT EXTEND in_arg_hyp
  TYPED AS var list option * bool
  PRINTED BY pr_in_arg_hyp_typed
  RAW_TYPED AS var list option * bool 
  RAW_PRINTED BY pr_in_arg_hyp
  GLOB_TYPED AS var list option * bool
  GLOB_PRINTED BY pr_in_arg_hyp
| [ "in" "*" ] -> [(None,true)]
| [ "in" "*" inconcl_opt(b) ] -> [let onconcl = match b with Some b -> b | None -> true in (None,onconcl)]
| [ "in" comma_var_l(l) inconcl_opt(b) ] -> [ let onconcl = match b with Some b -> b | None -> false in 
					      Some l, onconcl
					   ]
| [ ] -> [ (Some [],true) ]
END


let gen_in_arg_hyp_to_clause trad_id (hyps ,concl) : Tacticals.clause = 
  {Tacexpr.onhyps=
   Util.option_map 
     (fun l -> 
	List.map 
	  (fun id -> ( ([],trad_id id) ,Tacexpr.InHyp))
	  l
     )
     hyps;
   Tacexpr.onconcl=concl;
   Tacexpr.concl_occs = []}


let raw_in_arg_hyp_to_clause = gen_in_arg_hyp_to_clause snd 
let glob_in_arg_hyp_to_clause = gen_in_arg_hyp_to_clause (fun x -> x)