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|
(* $Id$ *)
open Pp
open Util
open Names
open Sign
open Term
open Declarations
open Inductive
open Instantiate
open Reduction
open Cooking
open Typeops
open Libobject
open Lib
open Declare
open Impargs
open Classops
open Class
open Recordops
let recalc_sp sp =
let (_,spid,k) = repr_path sp in Lib.make_path spid k
let build_abstract_list hyps ids_to_discard =
map_succeed
(fun id ->
if not (mem_named_context id hyps) then failwith "caugth"; ABSTRACT)
ids_to_discard
(* Discharge of inductives is done here (while discharge of constants
is done by the kernel for efficiency). *)
let abstract_inductive ids_to_abs hyps inds =
let abstract_one_var d inds =
let ntyp = List.length inds in
let new_refs =
list_tabulate (fun k -> applist(mkRel (k+2),[mkRel 1])) ntyp in
let inds' =
List.map
(function (tname,arity,cnames,lc) ->
let arity' = mkNamedProd_or_LetIn d arity in
let lc' =
List.map (fun b -> mkNamedProd_or_LetIn d (substl new_refs b)) lc
in
(tname,arity',cnames,lc'))
inds
in
(inds',ABSTRACT)
in
let abstract_once ((hyps,inds,modl) as sofar) id =
match hyps with
| [] -> sofar
| (hyp,c,t as d)::rest ->
if id <> hyp then sofar
else
let (inds',modif) = abstract_one_var d inds in
(rest, inds', modif::modl)
in
let (_,inds',revmodl) =
List.fold_left abstract_once (hyps,inds,[]) ids_to_abs in
let inds'' =
List.map
(fun (a,b,c,d) -> (a,body_of_type b,c,List.map body_of_type d))
inds' in
(inds'', List.rev revmodl)
let process_inductive osecsp nsecsp oldenv (ids_to_discard,modlist) mib =
assert (Array.length mib.mind_packets > 0);
let finite = mib.mind_packets.(0).mind_finite in
let inds =
array_map_to_list
(fun mip ->
(mip.mind_typename,
expmod_type oldenv modlist (mind_user_arity mip),
Array.to_list mip.mind_consnames,
Array.to_list
(Array.map (expmod_type oldenv modlist) (mind_user_lc mip))))
mib.mind_packets
in
let hyps' = map_named_context (expmod_constr oldenv modlist) mib.mind_hyps in
let (inds',modl) = abstract_inductive ids_to_discard hyps' inds in
let lmodif_one_mind i =
let nbc = Array.length (mind_nth_type_packet mib i).mind_consnames in
(IndRef (osecsp,i), DO_ABSTRACT (IndRef(nsecsp,i),modl))::
(list_tabulate
(function j ->
let j' = j + 1 in
(ConstructRef ((osecsp,i),j'),
DO_ABSTRACT (ConstructRef ((nsecsp,i),j'),modl)))
nbc)
in
let modifs = List.flatten (list_tabulate lmodif_one_mind mib.mind_ntypes) in
({ mind_entry_nparams = mib.mind_nparams + (List.length modl);
mind_entry_finite = finite;
mind_entry_inds = inds' },
modifs)
(* Discharge messages. *)
let constant_message id =
if Options.is_verbose() then pPNL [< print_id id; 'sTR " is discharged." >]
let inductive_message inds =
if Options.is_verbose() then
pPNL (hOV 0
(match inds with
| [] -> assert false
| [(i,_,_,_)] -> [< print_id i; 'sTR " is discharged." >]
| l -> [< prlist_with_sep pr_coma
(fun (id,_,_,_) -> print_id id) l;
'sPC; 'sTR "are discharged.">]))
(* Discharge operations for the various objects of the environment. *)
type discharge_operation =
| Variable of identifier * section_variable_entry * strength * bool * bool
| Parameter of identifier * constr * bool
| Constant of identifier * recipe * strength * bool
| Inductive of mutual_inductive_entry * bool
| Class of cl_typ * cl_info_typ
| Struc of inductive_path * struc_typ
| Coercion of ((coe_typ * coe_info_typ) * cl_typ * cl_typ)
* identifier * int
(* Main function to traverse the library segment and compute the various
discharge operations. *)
let process_object oldenv sec_sp (ops,ids_to_discard,work_alist) (sp,lobj) =
let tag = object_tag lobj in
match tag with
| "VARIABLE" ->
let ((id,c,t),stre,sticky) = out_variable sp in
if stre = (DischargeAt sec_sp) or ids_to_discard <> [] then
(ops,id::ids_to_discard,work_alist)
else
let imp = is_implicit_var id in
let newdecl =
match c with
| None ->
SectionLocalDecl
(expmod_constr oldenv work_alist (body_of_type t))
| Some body ->
SectionLocalDef
(expmod_constr oldenv work_alist body)
in
(Variable (id,newdecl,stre,sticky,imp) :: ops,
ids_to_discard,work_alist)
| "CONSTANT" | "PARAMETER" ->
let stre = constant_or_parameter_strength sp in
if stre = (DischargeAt sec_sp) then
(ops, ids_to_discard, (ConstRef sp, DO_REPLACE) :: work_alist)
else
let cb = Environ.lookup_constant sp oldenv in
let spid = basename sp in
let imp = is_implicit_constant sp in
let newsp = recalc_sp sp in
let mods =
let modl = build_abstract_list cb.const_hyps ids_to_discard in
[ (ConstRef sp, DO_ABSTRACT(ConstRef newsp,modl)) ]
in
let r = { d_from = sp;
d_modlist = work_alist;
d_abstract = ids_to_discard } in
let op = Constant (spid,r,stre,imp) in
(op :: ops, ids_to_discard, mods @ work_alist)
| "INDUCTIVE" ->
let mib = Environ.lookup_mind sp oldenv in
let newsp = recalc_sp sp in
let imp = is_implicit_inductive_definition sp in
let (mie,mods) =
process_inductive sp newsp oldenv (ids_to_discard,work_alist) mib in
((Inductive(mie,imp)) :: ops, ids_to_discard, mods @ work_alist)
| "CLASS" ->
let ((cl,clinfo) as x) = outClass lobj in
if clinfo.cL_STRE = (DischargeAt sec_sp) then
(ops,ids_to_discard,work_alist)
else
let (y1,y2) = process_class sec_sp x in
((Class (y1,y2))::ops, ids_to_discard, work_alist)
| "COERCION" ->
let (((_,coeinfo),_,_)as x) = outCoercion lobj in
if coeinfo.cOE_STRE = (DischargeAt sec_sp) then
(ops,ids_to_discard,work_alist)
else
let (y,idf,ps) = process_coercion sec_sp x in
((Coercion (y,idf,ps))::ops, ids_to_discard, work_alist)
| "STRUCTURE" ->
let ((sp,i),info) = outStruc lobj in
let newsp = recalc_sp sp in
let mib = Environ.lookup_mind sp oldenv in
let strobj =
{ s_CONST = info.s_CONST;
s_PARAM = mib.mind_nparams;
s_PROJ = List.map (option_app recalc_sp) info.s_PROJ } in
((Struc ((newsp,i),strobj))::ops, ids_to_discard, work_alist)
(***TODO
| "OBJDEF1" ->
let sp = outObjDef1 lobj in
let ((_,spid,_)) = repr_path sp in
begin try objdef_declare spid with _ -> () end;
(ids_to_discard,work_alist)
***)
| _ -> (ops,ids_to_discard,work_alist)
let process_item oldenv sec_sp acc = function
| (sp,Leaf lobj) -> process_object oldenv sec_sp acc (sp,lobj)
| (_,_) -> acc
let process_operation = function
| Variable (id,expmod_a,stre,sticky,imp) ->
(* Warning:parentheses needed to get a side-effect from with_implicits *)
with_implicits imp (declare_variable id) (expmod_a,stre,sticky)
| Parameter (spid,typ,imp) ->
with_implicits imp (declare_parameter spid) typ;
constant_message spid
| Constant (spid,r,stre,imp) ->
with_implicits imp (declare_constant spid) (ConstantRecipe r,stre);
constant_message spid
| Inductive (mie,imp) ->
let _ = with_implicits imp declare_mind mie in
inductive_message mie.mind_entry_inds
| Class (y1,y2) ->
Lib.add_anonymous_leaf (inClass (y1,y2))
| Struc (newsp,strobj) ->
Lib.add_anonymous_leaf (inStruc (newsp,strobj))
| Coercion ((_,_,clt) as y,idf,ps) ->
Lib.add_anonymous_leaf (inCoercion y)
let close_section _ s =
let oldenv = Global.env() in
let (sec_sp,decls) = close_section s in
let (ops,ids,_) =
List.fold_left (process_item oldenv sec_sp) ([],[],[]) decls in
Global.pop_named_decls ids;
List.iter process_operation (List.rev ops)
|
