+++ /dev/null
-(* Copyright (C) 2004-2005, HELM Team.
- *
- * This file is part of HELM, an Hypertextual, Electronic
- * Library of Mathematics, developed at the Computer Science
- * Department, University of Bologna, Italy.
- *
- * HELM is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * HELM is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with HELM; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- *
- * For details, see the HELM World-Wide-Web page,
- * http://helm.cs.unibo.it/
- *)
-
-module Ast = CicNotationPt
-
-let visit_ast ?(special_k = fun _ -> assert false) k =
- let rec aux = function
- | Ast.Appl terms -> Ast.Appl (List.map k terms)
- | Ast.Binder (kind, var, body) ->
- Ast.Binder (kind, aux_capture_variable var, k body)
- | Ast.Case (term, indtype, typ, patterns) ->
- Ast.Case (k term, indtype, aux_opt typ, aux_patterns patterns)
- | Ast.Cast (t1, t2) -> Ast.Cast (k t1, k t2)
- | Ast.LetIn (var, t1, t2) ->
- Ast.LetIn (aux_capture_variable var, k t1, k t2)
- | Ast.LetRec (kind, definitions, term) ->
- let definitions =
- List.map
- (fun (var, ty, n) -> aux_capture_variable var, k ty, n)
- definitions
- in
- Ast.LetRec (kind, definitions, k term)
- | Ast.Ident (name, Some substs) ->
- Ast.Ident (name, Some (aux_substs substs))
- | Ast.Uri (name, Some substs) -> Ast.Uri (name, Some (aux_substs substs))
- | Ast.Meta (index, substs) -> Ast.Meta (index, List.map aux_opt substs)
- | (Ast.AttributedTerm _
- | Ast.Layout _
- | Ast.Literal _
- | Ast.Magic _
- | Ast.Variable _) as t -> special_k t
- | (Ast.Ident _
- | Ast.Implicit
- | Ast.Num _
- | Ast.Sort _
- | Ast.Symbol _
- | Ast.Uri _
- | Ast.UserInput) as t -> t
- and aux_opt = function
- | None -> None
- | Some term -> Some (k term)
- and aux_capture_variable (term, typ_opt) = k term, aux_opt typ_opt
- and aux_patterns patterns = List.map aux_pattern patterns
- and aux_pattern ((head, hrefs, vars), term) =
- ((head, hrefs, List.map aux_capture_variable vars), k term)
- and aux_subst (name, term) = (name, k term)
- and aux_substs substs = List.map aux_subst substs
- in
- aux
-
-let visit_layout k = function
- | Ast.Sub (t1, t2) -> Ast.Sub (k t1, k t2)
- | Ast.Sup (t1, t2) -> Ast.Sup (k t1, k t2)
- | Ast.Below (t1, t2) -> Ast.Below (k t1, k t2)
- | Ast.Above (t1, t2) -> Ast.Above (k t1, k t2)
- | Ast.Over (t1, t2) -> Ast.Over (k t1, k t2)
- | Ast.Atop (t1, t2) -> Ast.Atop (k t1, k t2)
- | Ast.Frac (t1, t2) -> Ast.Frac (k t1, k t2)
- | Ast.Sqrt t -> Ast.Sqrt (k t)
- | Ast.Root (arg, index) -> Ast.Root (k arg, k index)
- | Ast.Break -> Ast.Break
- | Ast.Box (kind, terms) -> Ast.Box (kind, List.map k terms)
- | Ast.Group terms -> Ast.Group (List.map k terms)
-
-let visit_magic k = function
- | Ast.List0 (t, l) -> Ast.List0 (k t, l)
- | Ast.List1 (t, l) -> Ast.List1 (k t, l)
- | Ast.Opt t -> Ast.Opt (k t)
- | Ast.Fold (kind, t1, names, t2) -> Ast.Fold (kind, k t1, names, k t2)
- | Ast.Default (t1, t2) -> Ast.Default (k t1, k t2)
- | Ast.If (t1, t2, t3) -> Ast.If (k t1, k t2, k t3)
- | Ast.Fail -> Ast.Fail
-
-let visit_variable k = function
- | Ast.NumVar _
- | Ast.IdentVar _
- | Ast.TermVar _
- | Ast.FreshVar _ as t -> t
- | Ast.Ascription (t, s) -> Ast.Ascription (k t, s)
-
-let variables_of_term t =
- let rec vars = ref [] in
- let add_variable v =
- if List.mem v !vars then ()
- else vars := v :: !vars
- in
- let rec aux = function
- | Ast.Magic m -> Ast.Magic (visit_magic aux m)
- | Ast.Layout l -> Ast.Layout (visit_layout aux l)
- | Ast.Variable v -> Ast.Variable (aux_variable v)
- | Ast.Literal _ as t -> t
- | Ast.AttributedTerm (_, t) -> aux t
- | t -> visit_ast aux t
- and aux_variable = function
- | (Ast.NumVar _
- | Ast.IdentVar _
- | Ast.TermVar _) as t ->
- add_variable t ;
- t
- | Ast.FreshVar _ as t -> t
- | Ast.Ascription _ -> assert false
- in
- ignore (aux t) ;
- !vars
-
-let names_of_term t =
- let aux = function
- | Ast.NumVar s
- | Ast.IdentVar s
- | Ast.TermVar s -> s
- | _ -> assert false
- in
- List.map aux (variables_of_term t)
-
-let keywords_of_term t =
- let rec keywords = ref [] in
- let add_keyword k = keywords := k :: !keywords in
- let rec aux = function
- | Ast.AttributedTerm (_, t) -> aux t
- | Ast.Layout l -> Ast.Layout (visit_layout aux l)
- | Ast.Literal (`Keyword k) as t ->
- add_keyword k;
- t
- | Ast.Literal _ as t -> t
- | Ast.Magic m -> Ast.Magic (visit_magic aux m)
- | Ast.Variable _ as v -> v
- | t -> visit_ast aux t
- in
- ignore (aux t) ;
- !keywords
-
-let rec strip_attributes t =
- let special_k = function
- | Ast.AttributedTerm (_, term) -> strip_attributes term
- | Ast.Magic m -> Ast.Magic (visit_magic strip_attributes m)
- | Ast.Variable _ as t -> t
- | t -> assert false
- in
- visit_ast ~special_k strip_attributes t
-
-let rec get_idrefs =
- function
- | Ast.AttributedTerm (`IdRef id, t) -> id :: get_idrefs t
- | Ast.AttributedTerm (_, t) -> get_idrefs t
- | _ -> []
-
-let meta_names_of_term term =
- let rec names = ref [] in
- let add_name n =
- if List.mem n !names then ()
- else names := n :: !names
- in
- let rec aux = function
- | Ast.AttributedTerm (_, term) -> aux term
- | Ast.Appl terms -> List.iter aux terms
- | Ast.Binder (_, _, body) -> aux body
- | Ast.Case (term, indty, outty_opt, patterns) ->
- aux term ;
- aux_opt outty_opt ;
- List.iter aux_branch patterns
- | Ast.LetIn (_, t1, t2) ->
- aux t1 ;
- aux t2
- | Ast.LetRec (_, definitions, body) ->
- List.iter aux_definition definitions ;
- aux body
- | Ast.Uri (_, Some substs) -> aux_substs substs
- | Ast.Ident (_, Some substs) -> aux_substs substs
- | Ast.Meta (_, substs) -> aux_meta_substs substs
-
- | Ast.Implicit
- | Ast.Ident _
- | Ast.Num _
- | Ast.Sort _
- | Ast.Symbol _
- | Ast.Uri _
- | Ast.UserInput -> ()
-
- | Ast.Magic magic -> aux_magic magic
- | Ast.Variable var -> aux_variable var
-
- | _ -> assert false
- and aux_opt = function
- | Some term -> aux term
- | None -> ()
- and aux_capture_var (_, ty_opt) = aux_opt ty_opt
- and aux_branch (pattern, term) =
- aux_pattern pattern ;
- aux term
- and aux_pattern (head, _, vars) =
- List.iter aux_capture_var vars
- and aux_definition (var, term, i) =
- aux_capture_var var ;
- aux term
- and aux_substs substs = List.iter (fun (_, term) -> aux term) substs
- and aux_meta_substs meta_substs = List.iter aux_opt meta_substs
- and aux_variable = function
- | Ast.NumVar name -> add_name name
- | Ast.IdentVar name -> add_name name
- | Ast.TermVar name -> add_name name
- | Ast.FreshVar _ -> ()
- | Ast.Ascription _ -> assert false
- and aux_magic = function
- | Ast.Default (t1, t2)
- | Ast.Fold (_, t1, _, t2) ->
- aux t1 ;
- aux t2
- | Ast.If (t1, t2, t3) ->
- aux t1 ;
- aux t2 ;
- aux t3
- | Ast.Fail -> ()
- | _ -> assert false
- in
- aux term ;
- !names
-
-let rectangular matrix =
- let columns = Array.length matrix.(0) in
- try
- Array.iter (fun a -> if Array.length a <> columns then raise Exit) matrix;
- true
- with Exit -> false
-
-let ncombine ll =
- let matrix = Array.of_list (List.map Array.of_list ll) in
- assert (rectangular matrix);
- let rows = Array.length matrix in
- let columns = Array.length matrix.(0) in
- let lists = ref [] in
- for j = 0 to columns - 1 do
- let l = ref [] in
- for i = 0 to rows - 1 do
- l := matrix.(i).(j) :: !l
- done;
- lists := List.rev !l :: !lists
- done;
- List.rev !lists
-
-let string_of_literal = function
- | `Symbol s
- | `Keyword s
- | `Number s -> s
-
-let boxify = function
- | [ a ] -> a
- | l -> Ast.Layout (Ast.Box ((Ast.H, false, false), l))
-
-let unboxify = function
- | Ast.Layout (Ast.Box ((Ast.H, false, false), [ a ])) -> a
- | l -> l
-
-let group = function
- | [ a ] -> a
- | l -> Ast.Layout (Ast.Group l)
-
-let ungroup =
- let rec aux acc =
- function
- [] -> List.rev acc
- | Ast.Layout (Ast.Group terms) :: terms' -> aux acc (terms @ terms')
- | term :: terms -> aux (term :: acc) terms
- in
- aux []
-
-let dress ~sep:sauce =
- let rec aux =
- function
- | [] -> []
- | [hd] -> [hd]
- | hd :: tl -> hd :: sauce :: aux tl
- in
- aux
-
-let dressn ~sep:sauces =
- let rec aux =
- function
- | [] -> []
- | [hd] -> [hd]
- | hd :: tl -> hd :: sauces @ aux tl
- in
- aux
-
-let find_appl_pattern_uris ap =
- let rec aux acc =
- function
- | Ast.UriPattern uri -> uri :: acc
- | Ast.ImplicitPattern
- | Ast.VarPattern _ -> acc
- | Ast.ApplPattern apl -> List.fold_left aux acc apl
- in
- let uris = aux [] ap in
- HExtlib.list_uniq (List.fast_sort UriManager.compare uris)
-
-let rec find_branch =
- function
- Ast.Magic (Ast.If (_, Ast.Magic Ast.Fail, t)) -> find_branch t
- | Ast.Magic (Ast.If (_, t, _)) -> find_branch t
- | t -> t
-
-let cic_name_of_name = function
- | Ast.Ident ("_", None) -> Cic.Anonymous
- | Ast.Ident (name, None) -> Cic.Name name
- | _ -> assert false
-
-let name_of_cic_name =
-(* let add_dummy_xref t = Ast.AttributedTerm (`IdRef "", t) in *)
- (* ZACK why we used to generate dummy xrefs? *)
- let add_dummy_xref t = t in
- function
- | Cic.Name s -> add_dummy_xref (Ast.Ident (s, None))
- | Cic.Anonymous -> add_dummy_xref (Ast.Ident ("_", None))
-
-let fresh_index = ref ~-1
-
-type notation_id = int
-
-let fresh_id () =
- incr fresh_index;
- !fresh_index
-
- (* TODO ensure that names generated by fresh_var do not clash with user's *)
-let fresh_name () = "fresh" ^ string_of_int (fresh_id ())
-
-let rec freshen_term ?(index = ref 0) term =
- let freshen_term = freshen_term ~index in
- let fresh_instance () = incr index; !index in
- let special_k = function
- | Ast.AttributedTerm (attr, t) -> Ast.AttributedTerm (attr, freshen_term t)
- | Ast.Layout l -> Ast.Layout (visit_layout freshen_term l)
- | Ast.Magic m -> Ast.Magic (visit_magic freshen_term m)
- | Ast.Variable v -> Ast.Variable (visit_variable freshen_term v)
- | Ast.Literal _ as t -> t
- | _ -> assert false
- in
- match term with
- | Ast.Symbol (s, instance) -> Ast.Symbol (s, fresh_instance ())
- | Ast.Num (s, instance) -> Ast.Num (s, fresh_instance ())
- | t -> visit_ast ~special_k freshen_term t
-
-let freshen_obj obj =
- let index = ref 0 in
- let freshen_term = freshen_term ~index in
- let freshen_name_ty = List.map (fun (n, t) -> (n, freshen_term t)) in
- match obj with
- | GrafiteAst.Inductive (params, indtypes) ->
- let indtypes =
- List.map
- (fun (n, co, ty, ctors) -> (n, co, ty, freshen_name_ty ctors))
- indtypes
- in
- GrafiteAst.Inductive (freshen_name_ty params, indtypes)
- | GrafiteAst.Theorem (flav, n, t, ty_opt) ->
- let ty_opt =
- match ty_opt with None -> None | Some ty -> Some (freshen_term ty)
- in
- GrafiteAst.Theorem (flav, n, freshen_term t, ty_opt)
- | GrafiteAst.Record (params, n, ty, fields) ->
- GrafiteAst.Record (freshen_name_ty params, n, freshen_term ty,
- freshen_name_ty fields)
-
-let freshen_term = freshen_term ?index:None
-
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