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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: minicoq.ml 10346 2007-12-05 21:11:19Z aspiwack $ *)
open Pp
open Util
open Names
open Term
open Sign
open Declarations
open Inductive
open Type_errors
open Safe_typing
open G_minicoq
let (env : safe_environment ref) = ref empty_environment
let locals () =
List.map (fun (id,b,t) -> (id, make_path [] id CCI))
(named_context !env)
let lookup_named id =
let rec look n = function
| [] -> mkVar id
| (Name id')::_ when id = id' -> mkRel n
| _::r -> look (succ n) r
in
look 1
let args sign = Array.of_list (instance_from_section_context sign)
let rec globalize bv c = match kind_of_term c with
| Var id -> lookup_named id bv
| Const (sp, _) ->
let cb = lookup_constant sp !env in mkConst (sp, args cb.const_hyps)
| Ind (sp,_ as spi, _) ->
let mib = lookup_mind sp !env in mkMutInd (spi, args mib.mind_hyps)
| Construct ((sp,_),_ as spc, _) ->
let mib = lookup_mind sp !env in mkMutConstruct (spc, args mib.mind_hyps)
| _ -> map_constr_with_named_binders (fun na l -> na::l) globalize bv c
let check c =
let c = globalize [] c in
let (j,u) = safe_infer !env c in
let ty = j_type j in
let pty = pr_term CCI (env_of_safe_env !env) ty in
mSGNL (hov 0 (str" :" ++ spc () ++ hov 0 pty ++ fnl ()))
let definition id ty c =
let c = globalize [] c in
let ty = Option.map (globalize []) ty in
let ce = { const_entry_body = c; const_entry_type = ty } in
let sp = make_path [] id CCI in
env := add_constant sp ce (locals()) !env;
mSGNL (hov 0 (pr_id id ++ spc () ++ str"is defined" ++ fnl ()))
let parameter id t =
let t = globalize [] t in
let sp = make_path [] id CCI in
env := add_parameter sp t (locals()) !env;
mSGNL (hov 0 (str"parameter" ++ spc () ++ pr_id id ++
spc () ++ str"is declared" ++ fnl ()))
let variable id t =
let t = globalize [] t in
env := push_named_assum (id,t) !env;
mSGNL (hov 0 (str"variable" ++ spc () ++ pr_id id ++
spc () ++ str"is declared" ++ fnl ()))
let inductive par inds =
let nparams = List.length par in
let bvpar = List.rev (List.map (fun (id,_) -> Name id) par) in
let name_inds = List.map (fun (id,_,_) -> Name id) inds in
let bv = bvpar @ List.rev name_inds in
let npar = List.map (fun (id,c) -> (Name id, globalize [] c)) par in
let one_inductive (id,ar,cl) =
let cv = List.map (fun (_,c) -> prod_it (globalize bv c) npar) cl in
{ mind_entry_nparams = nparams;
mind_entry_params = List.map (fun (id,c) -> (id, LocalAssum c)) par;
mind_entry_typename = id;
mind_entry_arity = prod_it (globalize bvpar ar) npar;
mind_entry_consnames = List.map fst cl;
mind_entry_lc = cv }
in
let inds = List.map one_inductive inds in
let mie = {
mind_entry_finite = true;
mind_entry_inds = inds }
in
let sp =
let mi1 = List.hd inds in
make_path [] mi1.mind_entry_typename CCI in
env := add_mind sp mie (locals()) !env;
mSGNL (hov 0 (str"inductive type(s) are declared" ++ fnl ()))
let execute = function
| Check c -> check c
| Definition (id, ty, c) -> definition id ty c
| Parameter (id, t) -> parameter id t
| Variable (id, t) -> variable id t
| Inductive (par,inds) -> inductive par inds
let parse_file f =
let c = open_in f in
let cs = Stream.of_channel c in
try
while true do
let c = Grammar.Entry.parse command cs in execute c
done
with
| End_of_file | Stdpp.Exc_located (_, End_of_file) -> close_in c; exit 0
| exn -> close_in c; raise exn
module Explain = Fhimsg.Make(struct let pr_term = pr_term end)
let rec explain_exn = function
| TypeError (k,ctx,te) ->
mSGNL (hov 0 (str "type error:" ++ spc () ++
Explain.explain_type_error k ctx te ++ fnl ()))
| Stdpp.Exc_located (_,exn) ->
explain_exn exn
| exn ->
mSGNL (hov 0 (str"error: " ++ str (Printexc.to_string exn) ++ fnl ()))
let top () =
let cs = Stream.of_channel stdin in
while true do
try
let c = Grammar.Entry.parse command cs in execute c
with
| End_of_file | Stdpp.Exc_located (_, End_of_file) -> exit 0
| exn -> explain_exn exn
done
let main () =
if Array.length Sys.argv = 1 then
parse_file "test"
else
if Sys.argv.(1) = "-top" then top () else parse_file (Sys.argv.(1))
let _ = Printexc.print main ()
|
