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|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2010 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
open Pp
open Errors
open Util
open Names
open Nameops
open Term
open Mod_subst
open Libnames
(*s Global reference is a kernel side type for all references together *)
type global_reference =
| VarRef of variable
| ConstRef of constant
| IndRef of inductive
| ConstructRef of constructor
let isVarRef = function VarRef _ -> true | _ -> false
let isConstRef = function ConstRef _ -> true | _ -> false
let isIndRef = function IndRef _ -> true | _ -> false
let isConstructRef = function ConstructRef _ -> true | _ -> false
let eq_gr gr1 gr2 =
match gr1,gr2 with
| ConstRef con1, ConstRef con2 -> eq_constant con1 con2
| IndRef kn1,IndRef kn2 -> eq_ind kn1 kn2
| ConstructRef kn1,ConstructRef kn2 -> eq_constructor kn1 kn2
| _,_ -> gr1=gr2
let destVarRef = function VarRef ind -> ind | _ -> failwith "destVarRef"
let destConstRef = function ConstRef ind -> ind | _ -> failwith "destConstRef"
let destIndRef = function IndRef ind -> ind | _ -> failwith "destIndRef"
let destConstructRef = function ConstructRef ind -> ind | _ -> failwith "destConstructRef"
let subst_constructor subst ((kn,i),j as ref) =
let kn' = subst_ind subst kn in
if kn==kn' then ref, mkConstruct ref
else ((kn',i),j), mkConstruct ((kn',i),j)
let subst_global subst ref = match ref with
| VarRef var -> ref, mkVar var
| ConstRef kn ->
let kn',t = subst_con subst kn in
if kn==kn' then ref, mkConst kn else ConstRef kn', t
| IndRef (kn,i) ->
let kn' = subst_ind subst kn in
if kn==kn' then ref, mkInd (kn,i) else IndRef(kn',i), mkInd (kn',i)
| ConstructRef ((kn,i),j as c) ->
let c',t = subst_constructor subst c in
if c'==c then ref,t else ConstructRef c', t
let canonical_gr = function
| ConstRef con -> ConstRef(constant_of_kn(canonical_con con))
| IndRef (kn,i) -> IndRef(mind_of_kn(canonical_mind kn),i)
| ConstructRef ((kn,i),j )-> ConstructRef((mind_of_kn(canonical_mind kn),i),j)
| VarRef id -> VarRef id
let global_of_constr c = match kind_of_term c with
| Const sp -> ConstRef sp
| Ind ind_sp -> IndRef ind_sp
| Construct cstr_cp -> ConstructRef cstr_cp
| Var id -> VarRef id
| _ -> raise Not_found
let constr_of_global = function
| VarRef id -> mkVar id
| ConstRef sp -> mkConst sp
| ConstructRef sp -> mkConstruct sp
| IndRef sp -> mkInd sp
let constr_of_reference = constr_of_global
let reference_of_constr = global_of_constr
let global_ord_gen fc fmi x y =
let ind_ord (indx,ix) (indy,iy) =
let c = Pervasives.compare ix iy in
if c = 0 then kn_ord (fmi indx) (fmi indy) else c
in
match x, y with
| ConstRef cx, ConstRef cy -> kn_ord (fc cx) (fc cy)
| IndRef indx, IndRef indy -> ind_ord indx indy
| ConstructRef (indx,jx), ConstructRef (indy,jy) ->
let c = Pervasives.compare jx jy in
if c = 0 then ind_ord indx indy else c
| _, _ -> Pervasives.compare x y
let global_ord_can = global_ord_gen canonical_con canonical_mind
let global_ord_user = global_ord_gen user_con user_mind
(* By default, [global_reference] are ordered on their canonical part *)
module RefOrdered = struct
type t = global_reference
let compare = global_ord_can
end
module RefOrdered_env = struct
type t = global_reference
let compare = global_ord_user
end
module Refset = Set.Make(RefOrdered)
module Refmap = Map.Make(RefOrdered)
(* Extended global references *)
type syndef_name = kernel_name
type extended_global_reference =
| TrueGlobal of global_reference
| SynDef of syndef_name
(* We order [extended_global_reference] via their user part
(cf. pretty printer) *)
module ExtRefOrdered = struct
type t = extended_global_reference
let compare x y =
match x, y with
| TrueGlobal rx, TrueGlobal ry -> global_ord_user rx ry
| SynDef knx, SynDef kny -> kn_ord knx kny
| _, _ -> Pervasives.compare x y
end
(** {6 Temporary function to brutally form kernel names from section paths } *)
let encode_mind dir id = make_mind (MPfile dir) empty_dirpath (label_of_id id)
let encode_con dir id = make_con (MPfile dir) empty_dirpath (label_of_id id)
let decode_mind kn =
let rec dir_of_mp = function
| MPfile dir -> repr_dirpath dir
| MPbound mbid ->
let _,_,dp = repr_mbid mbid in
let id = id_of_mbid mbid in
id::(repr_dirpath dp)
| MPdot(mp,l) -> (id_of_label l)::(dir_of_mp mp)
in
let mp,sec_dir,l = repr_mind kn in
if (repr_dirpath sec_dir) = [] then
(make_dirpath (dir_of_mp mp)),id_of_label l
else
anomaly "Section part should be empty!"
let decode_con kn =
let mp,sec_dir,l = repr_con kn in
match mp,(repr_dirpath sec_dir) with
MPfile dir,[] -> (dir,id_of_label l)
| _ , [] -> anomaly "MPfile expected!"
| _ -> anomaly "Section part should be empty!"
(* popping one level of section in global names *)
let pop_con con =
let (mp,dir,l) = repr_con con in
Names.make_con mp (pop_dirpath dir) l
let pop_kn kn =
let (mp,dir,l) = repr_mind kn in
Names.make_mind mp (pop_dirpath dir) l
let pop_global_reference = function
| ConstRef con -> ConstRef (pop_con con)
| IndRef (kn,i) -> IndRef (pop_kn kn,i)
| ConstructRef ((kn,i),j) -> ConstructRef ((pop_kn kn,i),j)
| VarRef id -> anomaly "VarRef not poppable"
|
