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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 *)
(************************************************************************)
(*i camlp4use: "q_MLast.cmo" i*)
(* $Id$ *)
(* This file defines standard combinators to build ml expressions *)
open Util
open Extrawit
open Pcoq
let not_impl name x =
let desc =
if Obj.is_block (Obj.repr x) then
"tag = " ^ string_of_int (Obj.tag (Obj.repr x))
else
"int_val = " ^ string_of_int (Obj.magic x)
in
failwith ("<Q_util." ^ name ^ ", not impl: " ^ desc)
let rec patt_of_expr e =
let loc = MLast.loc_of_expr e in
match e with
| <:expr< $e1$.$e2$ >> -> <:patt< $patt_of_expr e1$.$patt_of_expr e2$ >>
| <:expr< $e1$ $e2$ >> -> <:patt< $patt_of_expr e1$ $patt_of_expr e2$ >>
| <:expr< loc >> -> <:patt< _ >>
| <:expr< $lid:s$ >> -> <:patt< $lid:s$ >>
| <:expr< $uid:s$ >> -> <:patt< $uid:s$ >>
| <:expr< $str:s$ >> -> <:patt< $str:s$ >>
| <:expr< $anti:e$ >> -> <:patt< $anti:patt_of_expr e$ >>
| _ -> not_impl "patt_of_expr" e
let mlexpr_of_list f l =
List.fold_right
(fun e1 e2 ->
let e1 = f e1 in
let loc = join_loc (MLast.loc_of_expr e1) (MLast.loc_of_expr e2) in
<:expr< [$e1$ :: $e2$] >>)
l (let loc = dummy_loc in <:expr< [] >>)
let mlexpr_of_pair m1 m2 (a1,a2) =
let e1 = m1 a1 and e2 = m2 a2 in
let loc = join_loc (MLast.loc_of_expr e1) (MLast.loc_of_expr e2) in
<:expr< ($e1$, $e2$) >>
let mlexpr_of_triple m1 m2 m3 (a1,a2,a3)=
let e1 = m1 a1 and e2 = m2 a2 and e3 = m3 a3 in
let loc = join_loc (MLast.loc_of_expr e1) (MLast.loc_of_expr e3) in
<:expr< ($e1$, $e2$, $e3$) >>
let mlexpr_of_quadruple m1 m2 m3 m4 (a1,a2,a3,a4)=
let e1 = m1 a1 and e2 = m2 a2 and e3 = m3 a3 and e4 = m4 a4 in
let loc = join_loc (MLast.loc_of_expr e1) (MLast.loc_of_expr e4) in
<:expr< ($e1$, $e2$, $e3$, $e4$) >>
(* We don't give location for tactic quotation! *)
let loc = dummy_loc
let mlexpr_of_bool = function
| true -> <:expr< True >>
| false -> <:expr< False >>
let mlexpr_of_int n = <:expr< $int:string_of_int n$ >>
let mlexpr_of_string s = <:expr< $str:s$ >>
let mlexpr_of_option f = function
| None -> <:expr< None >>
| Some e -> <:expr< Some $f e$ >>
open Vernacexpr
open Pcoq
open Genarg
let rec mlexpr_of_prod_entry_key = function
| Extend.Alist1 s -> <:expr< Extend.Alist1 $mlexpr_of_prod_entry_key s$ >>
| Extend.Alist1sep (s,sep) -> <:expr< Extend.Alist1sep $mlexpr_of_prod_entry_key s$ $str:sep$ >>
| Extend.Alist0 s -> <:expr< Extend.Alist0 $mlexpr_of_prod_entry_key s$ >>
| Extend.Alist0sep (s,sep) -> <:expr< Extend.Alist0sep $mlexpr_of_prod_entry_key s$ $str:sep$ >>
| Extend.Aopt s -> <:expr< Extend.Aopt $mlexpr_of_prod_entry_key s$ >>
| Extend.Amodifiers s -> <:expr< Extend.Amodifiers $mlexpr_of_prod_entry_key s$ >>
| Extend.Aself -> <:expr< Extend.Aself >>
| Extend.Anext -> <:expr< Extend.Anext >>
| Extend.Atactic n -> <:expr< Extend.Atactic $mlexpr_of_int n$ >>
| Extend.Agram s -> anomaly "Agram not supported"
| Extend.Aentry ("",s) -> <:expr< Extend.Agram (Gram.Entry.obj $lid:s$) >>
| Extend.Aentry (u,s) -> <:expr< Extend.Aentry $str:u$ $str:s$ >>
|
