From 66b6e83f4f4c32ad86333e13d65329be02c46048 Mon Sep 17 00:00:00 2001
From: Maxime Dénès
Date: Thu, 25 Apr 2019 12:02:43 +0200
Subject: Prepare merge into Coq

---
 vendor/Ltac2/src/tac2expr.mli | 190 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 190 insertions(+)
 create mode 100644 vendor/Ltac2/src/tac2expr.mli

(limited to 'vendor/Ltac2/src/tac2expr.mli')

diff --git a/vendor/Ltac2/src/tac2expr.mli b/vendor/Ltac2/src/tac2expr.mli
new file mode 100644
index 0000000000..1069d0bfa3
--- /dev/null
+++ b/vendor/Ltac2/src/tac2expr.mli
@@ -0,0 +1,190 @@
+(************************************************************************)
+(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
+(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2016     *)
+(*   \VV/  **************************************************************)
+(*    //   *      This file is distributed under the terms of the       *)
+(*         *       GNU Lesser General Public License Version 2.1        *)
+(************************************************************************)
+
+open Names
+open Libnames
+
+type mutable_flag = bool
+type rec_flag = bool
+type redef_flag = bool
+type lid = Id.t
+type uid = Id.t
+
+type ltac_constant = KerName.t
+type ltac_alias = KerName.t
+type ltac_constructor = KerName.t
+type ltac_projection = KerName.t
+type type_constant = KerName.t
+
+type tacref =
+| TacConstant of ltac_constant
+| TacAlias of ltac_alias
+
+type 'a or_relid =
+| RelId of qualid
+| AbsKn of 'a
+
+(** {5 Misc} *)
+
+type ml_tactic_name = {
+  mltac_plugin : string;
+  mltac_tactic : string;
+}
+
+type 'a or_tuple =
+| Tuple of int
+| Other of 'a
+
+(** {5 Type syntax} *)
+
+type raw_typexpr_r =
+| CTypVar of Name.t
+| CTypArrow of raw_typexpr * raw_typexpr
+| CTypRef of type_constant or_tuple or_relid * raw_typexpr list
+
+and raw_typexpr = raw_typexpr_r CAst.t
+
+type raw_typedef =
+| CTydDef of raw_typexpr option
+| CTydAlg of (uid * raw_typexpr list) list
+| CTydRec of (lid * mutable_flag * raw_typexpr) list
+| CTydOpn
+
+type 'a glb_typexpr =
+| GTypVar of 'a
+| GTypArrow of 'a glb_typexpr * 'a glb_typexpr
+| GTypRef of type_constant or_tuple * 'a glb_typexpr list
+
+type glb_alg_type = {
+  galg_constructors : (uid * int glb_typexpr list) list;
+  (** Constructors of the algebraic type *)
+  galg_nconst : int;
+  (** Number of constant constructors *)
+  galg_nnonconst : int;
+  (** Number of non-constant constructors *)
+}
+
+type glb_typedef =
+| GTydDef of int glb_typexpr option
+| GTydAlg of glb_alg_type
+| GTydRec of (lid * mutable_flag * int glb_typexpr) list
+| GTydOpn
+
+type type_scheme = int * int glb_typexpr
+
+type raw_quant_typedef = Names.lident list * raw_typedef
+type glb_quant_typedef = int * glb_typedef
+
+(** {5 Term syntax} *)
+
+type atom =
+| AtmInt of int
+| AtmStr of string
+
+(** Tactic expressions *)
+type raw_patexpr_r =
+| CPatVar of Name.t
+| CPatRef of ltac_constructor or_tuple or_relid * raw_patexpr list
+| CPatCnv of raw_patexpr * raw_typexpr
+
+and raw_patexpr = raw_patexpr_r CAst.t
+
+type raw_tacexpr_r =
+| CTacAtm of atom
+| CTacRef of tacref or_relid
+| CTacCst of ltac_constructor or_tuple or_relid
+| CTacFun of raw_patexpr list * raw_tacexpr
+| CTacApp of raw_tacexpr * raw_tacexpr list
+| CTacLet of rec_flag * (raw_patexpr * raw_tacexpr) list * raw_tacexpr
+| CTacCnv of raw_tacexpr * raw_typexpr
+| CTacSeq of raw_tacexpr * raw_tacexpr
+| CTacCse of raw_tacexpr * raw_taccase list
+| CTacRec of raw_recexpr
+| CTacPrj of raw_tacexpr * ltac_projection or_relid
+| CTacSet of raw_tacexpr * ltac_projection or_relid * raw_tacexpr
+| CTacExt : ('a, _) Tac2dyn.Arg.tag * 'a -> raw_tacexpr_r
+
+and raw_tacexpr = raw_tacexpr_r CAst.t
+
+and raw_taccase = raw_patexpr * raw_tacexpr
+
+and raw_recexpr = (ltac_projection or_relid * raw_tacexpr) list
+
+type case_info = type_constant or_tuple
+
+type 'a open_match = {
+  opn_match : 'a;
+  opn_branch : (Name.t * Name.t array * 'a) KNmap.t;
+  (** Invariant: should not be empty *)
+  opn_default : Name.t * 'a;
+}
+
+type glb_tacexpr =
+| GTacAtm of atom
+| GTacVar of Id.t
+| GTacRef of ltac_constant
+| GTacFun of Name.t list * glb_tacexpr
+| GTacApp of glb_tacexpr * glb_tacexpr list
+| GTacLet of rec_flag * (Name.t * glb_tacexpr) list * glb_tacexpr
+| GTacCst of case_info * int * glb_tacexpr list
+| GTacCse of glb_tacexpr * case_info * glb_tacexpr array * (Name.t array * glb_tacexpr) array
+| GTacPrj of type_constant * glb_tacexpr * int
+| GTacSet of type_constant * glb_tacexpr * int * glb_tacexpr
+| GTacOpn of ltac_constructor * glb_tacexpr list
+| GTacWth of glb_tacexpr open_match
+| GTacExt : (_, 'a) Tac2dyn.Arg.tag * 'a -> glb_tacexpr
+| GTacPrm of ml_tactic_name * glb_tacexpr list
+
+(** {5 Parsing & Printing} *)
+
+type exp_level =
+| E5
+| E4
+| E3
+| E2
+| E1
+| E0
+
+type sexpr =
+| SexprStr of string CAst.t
+| SexprInt of int CAst.t
+| SexprRec of Loc.t * Id.t option CAst.t * sexpr list
+
+(** {5 Toplevel statements} *)
+
+type strexpr =
+| StrVal of mutable_flag * rec_flag * (Names.lname * raw_tacexpr) list
+  (** Term definition *)
+| StrTyp of rec_flag * (qualid * redef_flag * raw_quant_typedef) list
+  (** Type definition *)
+| StrPrm of Names.lident * raw_typexpr * ml_tactic_name
+  (** External definition *)
+| StrSyn of sexpr list * int option * raw_tacexpr
+  (** Syntactic extensions *)
+| StrMut of qualid * raw_tacexpr
+  (** Redefinition of mutable globals *)
+| StrRun of raw_tacexpr
+  (** Toplevel evaluation of an expression *)
+
+(** {5 Dynamic semantics} *)
+
+(** Values are represented in a way similar to OCaml, i.e. they constrast
+    immediate integers (integers, constructors without arguments) and structured
+    blocks (tuples, arrays, constructors with arguments), as well as a few other
+    base cases, namely closures, strings, named constructors, and dynamic type
+    coming from the Coq implementation. *)
+
+type tag = int
+
+type frame =
+| FrLtac of ltac_constant
+| FrAnon of glb_tacexpr
+| FrPrim of ml_tactic_name
+| FrExtn : ('a, 'b) Tac2dyn.Arg.tag * 'b -> frame
+
+type backtrace = frame list
-- 
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