* http://helm.cs.unibo.it/
*)
- (* when an 'ident option is None, the default is to apply the tactic
- to the current goal *)
+open Printf
-type reduction_kind = [ `Reduce | `Simpl | `Whd ]
+type location = Lexing.position * Lexing.position
-type 'term pattern =
- | Pattern of 'term
+let pp_location (loc_begin, loc_end) =
+ let c_begin = loc_begin.Lexing.pos_cnum - loc_begin.Lexing.pos_bol in
+ let c_end = loc_end.Lexing.pos_cnum - loc_end.Lexing.pos_bol in
+ if loc_begin.Lexing.pos_lnum = -1 || loc_end.Lexing.pos_lnum = -1 then
+ sprintf "%d-%d" c_begin c_end
+ else
+ sprintf "(%d,%d)-(%d,%d)" loc_begin.Lexing.pos_lnum c_begin
+ loc_end.Lexing.pos_lnum c_end
-type location = int * int
+let floc_of_loc (loc_begin, loc_end) =
+ let floc_begin =
+ { Lexing.pos_fname = ""; Lexing.pos_lnum = -1; Lexing.pos_bol = -1;
+ Lexing.pos_cnum = loc_begin }
+ in
+ let floc_end = { floc_begin with Lexing.pos_cnum = loc_end } in
+ (floc_begin, floc_end)
-type ('term, 'ident) tactic =
- | LocatedTactic of location * ('term, 'ident) tactic
+let loc_of_floc = function
+ | { Lexing.pos_cnum = loc_begin }, { Lexing.pos_cnum = loc_end } ->
+ (loc_begin, loc_end)
- | Absurd
- | Apply of 'term
- | Assumption
- | Change of 'term * 'term * 'ident option (* what, with what, where *)
- | Change_pattern of 'term pattern * 'term * 'ident option
- (* what, with what, where *)
- | Contradiction
- | Cut of 'term
- | Decompose of 'ident * 'ident list (* which hypothesis, which principles *)
- | Discriminate of 'ident
- | Elim of 'term * 'term option (* what to elim, which principle to use *)
- | ElimType of 'term
- | Exact of 'term
- | Exists
- | Fold of reduction_kind * 'term
- | Fourier
- | Injection of 'ident
- | Intros of int option
- | Left
- | LetIn of 'term * 'ident (* TODO clashes with term below *)
- | Named_intros of 'ident list
- | Reduce of reduction_kind * 'term pattern * 'ident option (* what, where *)
- | Reflexivity
- | Replace of 'term * 'term (* what, with what *)
- | Replace_pattern of 'term pattern * 'term
- | RewriteLeft of 'term * 'ident option
- | RewriteRight of 'term * 'ident option
- | Right
- | Ring
- | Split
- | Symmetry
- | Transitivity of 'term
-
-type 'tactic tactical =
- | LocatedTactical of location * 'tactic tactical
-
- | Fail
- | For of int * 'tactic tactical
- | IdTac
- | Repeat of 'tactic tactical
- | Seq of 'tactic tactical list (* sequential composition *)
- | Tactic of 'tactic
- | Then of 'tactic tactical * 'tactic tactical list
- | Tries of 'tactic tactical list
- (* try a sequence of tacticals until one succeeds, fail otherwise *)
- | Try of 'tactic tactical (* try a tactical and mask failures *)
+let dummy_floc = floc_of_loc (-1, -1)
type binder_kind = [ `Lambda | `Pi | `Exists | `Forall ]
type induction_kind = [ `Inductive | `CoInductive ]
type sort_kind = [ `Prop | `Set | `Type | `CProp ]
type term_attribute =
- [ `Loc of location (* source file location *)
- | `IdRef of string (* ACic pointer *)
+ [ `Loc of location
+ | `IdRef of string
]
type term =
| AttributedTerm of term_attribute * term
| Appl of term list
- | Binder of binder_kind * capture_variable * term (* kind, name, body *)
+ | Binder of binder_kind * capture_variable * term
| Case of term * string option * term option * (case_pattern * term) list
- (* what to match, inductive type, out type, <pattern,action> list *)
- | LetIn of capture_variable * term * term (* name, body, where *)
+ | LetIn of capture_variable * term * term
| LetRec of induction_kind * (capture_variable * term * int) list * term
- (* (name, body, decreasing argument) list, where *)
- | Ident of string * subst list (* literal, substitutions *)
+ | Ident of string * subst list option
| Implicit
| Meta of int * meta_subst list
- | Num of string * int (* literal, instance *)
+ | Num of string * int
| Sort of sort_kind
- | Symbol of string * int (* canonical name, instance *)
+ | Symbol of string * int
+
+ | UserInput
+ | Uri of string * subst list option
-and capture_variable = Cic.name * term option (* name, type *)
+and capture_variable = Cic.name * term option
and meta_subst = term option
and subst = string * term
and case_pattern = string * capture_variable list
+let pack asts =
+ List.fold_right
+ (fun ast acc -> Binder (`Forall, (Cic.Anonymous, Some ast), acc))
+ asts (Sort `Type)
+
+let rec unpack = function
+ | Binder (`Forall, (Cic.Anonymous, Some ast), Sort `Type) -> [ast]
+ | Binder (`Forall, (Cic.Anonymous, Some ast), tgt) -> ast :: unpack tgt
+ | _ -> assert false
+