1 (* Copyright (C) 2004-2005, HELM Team.
3 * This file is part of HELM, an Hypertextual, Electronic
4 * Library of Mathematics, developed at the Computer Science
5 * Department, University of Bologna, Italy.
7 * HELM is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
12 * HELM is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with HELM; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 * For details, see the HELM World-Wide-Web page,
23 * http://helm.cs.unibo.it/
28 module Ast = NotationPt
35 | TermValue of NotationPt.term
36 | StringValue of ident_or_var
38 | OptValue of value option
39 | ListValue of value list
40 (* optional name of Ast.Symbols that we want to contain the interpretation of this literal
41 * location of the literal we are parsing
42 * optional uri, optional desc *)
43 | DisambiguationValue of (string option * Stdpp.location * string option * string option)
46 | TermType of int (* the level of the expected term *)
49 | OptType of value_type
50 | ListType of value_type
53 exception Value_not_found of string
54 exception Type_mismatch of string * value_type
56 type declaration = string * value_type
57 type binding = string * (value_type * value)
60 (* let rec pp_value = function
61 | TermValue t -> "T#" ^ NotationPp.pp_term (new NCicPp.status) t
62 | StringValue (Ident i) -> "I#" ^ i
63 | StringValue (Var v) -> "V#" ^ v
64 | NumValue n -> "N#" ^ n
65 | OptValue None -> "O#None"
66 | OptValue (Some v) -> "O#" ^ pp_value v
67 | ListValue vl -> "L#[" ^ (String.concat ";" (List.map pp_value vl)) ^ "]"
68 | DisambiguationValue _ -> "D#"
70 let pp_binding = function
71 | s, (ty,v) -> Printf.sprintf "{ %s := %s : %s }" s (pp_value v) "..."
73 let pp_env e = String.concat " " (List.map pp_binding e) *)
78 with Not_found -> raise (Value_not_found name)
80 let lookup_value env name =
82 snd (List.assoc name env)
83 with Not_found -> raise (Value_not_found name)
85 let remove_name env name = List.remove_assoc name env
87 let remove_names env names =
88 List.filter (fun name, _ -> not (List.mem name names)) env
90 let lookup_term env name =
91 match lookup env name with
93 | ty, _ -> raise (Type_mismatch (name, ty))
95 let lookup_num env name =
96 match lookup env name with
98 | ty, _ -> raise (Type_mismatch (name, ty))
100 let lookup_string env name =
101 match lookup env name with
102 | _, StringValue x -> x
103 | ty, _ -> raise (Type_mismatch (name, ty))
105 let lookup_opt env name =
106 match lookup env name with
108 | ty, _ -> raise (Type_mismatch (name, ty))
110 let lookup_list env name =
111 match lookup env name with
112 | _, ListValue x -> x
113 | ty, _ -> raise (Type_mismatch (name, ty))
115 let opt_binding_some (n, (ty, v)) = (n, (OptType ty, OptValue (Some v)))
116 let opt_binding_none (n, (ty, v)) = (n, (OptType ty, OptValue None))
117 let opt_binding_of_name (n, ty) = (n, (OptType ty, OptValue None))
118 let list_binding_of_name (n, ty) = (n, (ListType ty, ListValue []))
119 let opt_declaration (n, ty) = (n, OptType ty)
120 let list_declaration (n, ty) = (n, ListType ty)
122 let declaration_of_var = function
123 | Ast.NumVar s -> s, NumType
124 | Ast.IdentVar s -> s, StringType
125 | Ast.TermVar (s,(Ast.Self l|Ast.Level l)) -> s, TermType l
128 let value_of_term = function
129 | Ast.Num (s, _) -> NumValue s
130 | Ast.Ident (s, (* `Ambiguous? *) _) -> StringValue (Var s)
133 let term_of_value = function
134 | NumValue s -> Ast.Num (s, None)
135 | StringValue (Ident s) -> Ast.Ident (s, `Ambiguous)
137 | _ -> assert false (* TO BE UNDERSTOOD *)
139 let rec well_typed ty value =
141 | TermType _, TermValue _
142 | StringType, StringValue _
143 | OptType _, OptValue None
144 | NumType, NumValue _ -> true
145 | OptType ty', OptValue (Some value') -> well_typed ty' value'
146 | ListType ty', ListValue vl ->
147 List.for_all (fun value' -> well_typed ty' value') vl
150 let declarations_of_env = List.map (fun (name, (ty, _)) -> (name, ty))
151 let declarations_of_term p =
152 List.map declaration_of_var (NotationUtil.variables_of_term p)
154 let rec combine decls values =
155 match decls, values with
157 | (name, ty) :: decls, v :: values ->
158 (name, (ty, v)) :: (combine decls values)
161 let coalesce_env declarations env_list =
162 let env0 = List.map list_binding_of_name declarations in
163 let grow_env_entry env n v =
166 | (n', (ty, ListValue vl)) as entry ->
167 if n' = n then n', (ty, ListValue (v :: vl)) else entry
171 let grow_env env_i env =
173 (fun env (n, (_, v)) -> grow_env_entry env n v)
176 List.fold_right grow_env env_list env0