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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: syntax_def.ml 7779 2006-01-03 20:33:47Z herbelin $ *)
open Util
open Pp
open Names
open Libnames
open Topconstr
open Libobject
open Lib
open Nameops
(* Syntactic definitions. *)
let syntax_table = ref (KNmap.empty : aconstr KNmap.t)
let _ = Summary.declare_summary
"SYNTAXCONSTANT"
{ Summary.freeze_function = (fun () -> !syntax_table);
Summary.unfreeze_function = (fun ft -> syntax_table := ft);
Summary.init_function = (fun () -> syntax_table := KNmap.empty);
Summary.survive_module = false;
Summary.survive_section = false }
let add_syntax_constant kn c =
syntax_table := KNmap.add kn c !syntax_table
let load_syntax_constant i ((sp,kn),(local,c,onlyparse)) =
if Nametab.exists_cci sp then
errorlabstrm "cache_syntax_constant"
(pr_id (basename sp) ++ str " already exists");
add_syntax_constant kn c;
Nametab.push_syntactic_definition (Nametab.Until i) sp kn;
if not onlyparse then
(* Declare it to be used as long name *)
Notation.declare_uninterpretation (Notation.SynDefRule kn) ([],c)
let open_syntax_constant i ((sp,kn),(_,c,onlyparse)) =
Nametab.push_syntactic_definition (Nametab.Exactly i) sp kn;
if not onlyparse then
(* Redeclare it to be used as (short) name in case an other (distfix)
notation was declared inbetween *)
Notation.declare_uninterpretation (Notation.SynDefRule kn) ([],c)
let cache_syntax_constant d =
load_syntax_constant 1 d
let subst_syntax_constant ((sp,kn),subst,(local,c,onlyparse)) =
(local,subst_aconstr subst [] c,onlyparse)
let classify_syntax_constant (_,(local,_,_ as o)) =
if local then Dispose else Substitute o
let export_syntax_constant (local,_,_ as o) =
if local then None else Some o
let (in_syntax_constant, out_syntax_constant) =
declare_object {(default_object "SYNTAXCONSTANT") with
cache_function = cache_syntax_constant;
load_function = load_syntax_constant;
open_function = open_syntax_constant;
subst_function = subst_syntax_constant;
classify_function = classify_syntax_constant;
export_function = export_syntax_constant }
let declare_syntactic_definition local id onlyparse c =
let _ = add_leaf id (in_syntax_constant (local,c,onlyparse)) in ()
let rec set_loc loc _ a =
rawconstr_of_aconstr_with_binders loc (fun id e -> (id,e)) (set_loc loc) () a
let search_syntactic_definition loc kn =
set_loc loc () (KNmap.find kn !syntax_table)
exception BoundToASyntacticDefThatIsNotARef
let locate_global qid =
match Nametab.extended_locate qid with
| TrueGlobal ref -> ref
| SyntacticDef kn ->
match search_syntactic_definition dummy_loc kn with
| Rawterm.RRef (_,ref) -> ref
| _ ->
errorlabstrm "" (pr_qualid qid ++
str " is bound to a notation that does not denote a reference")
|
