1 (* Copyright (C) 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/
26 (** CIC Notation Parse Tree *)
28 type binder_kind = [ `Lambda | `Pi | `Exists | `Forall ]
29 type induction_kind = [ `Inductive | `CoInductive ]
30 type sort_kind = [ `Prop | `Set | `Type | `CProp ]
31 type fold_kind = [ `Left | `Right ]
33 type location = Lexing.position * Lexing.position
34 (* cut and past from CicAst.loc_of_floc *)
35 let loc_of_floc = function
36 | { Lexing.pos_cnum = loc_begin }, { Lexing.pos_cnum = loc_end } ->
39 let (x, y) = loc_of_floc floc in
40 failwith (Printf.sprintf "Error at characters %d - %d: %s" x y msg)
43 [ `Loc of location (* source file location *)
44 | `IdRef of string (* ACic pointer *)
45 | `Href of UriManager.uri list (* hyperlinks for literals *)
46 | `Level of int * Gramext.g_assoc (* precedence, associativity *)
47 | `XmlAttrs of (string option * string * string) list
48 (* list of XML attributes: namespace, name, value *)
60 | AttributedTerm of term_attribute * term
63 | Binder of binder_kind * capture_variable * term (* kind, name, body *)
64 | Case of term * string option * term option * (case_pattern * term) list
65 (* what to match, inductive type, out type, <pattern,action> list *)
67 | LetIn of capture_variable * term * term (* name, body, where *)
68 | LetRec of induction_kind * (capture_variable * term * int) list * term
69 (* (name, body, decreasing argument) list, where *)
70 | Ident of string * subst list option
71 (* literal, substitutions.
72 * Some [] -> user has given an empty explicit substitution list
73 * None -> user has given no explicit substitution list *)
75 | Meta of int * meta_subst list
76 | Num of string * int (* literal, instance *)
78 | Symbol of string * int (* canonical name, instance *)
80 | UserInput (* place holder for user input, used by MatitaConsole, not to be
82 | Uri of string * subst list option (* as Ident, for long names *)
84 (* Syntax pattern extensions *)
87 | Layout of layout_pattern
90 | Variable of pattern_variable
92 (* name, type. First component must be Ident or Variable (FreshVar _) *)
93 and capture_variable = term * term option
95 and meta_subst = term option
96 and subst = string * term
97 and case_pattern = string * capture_variable list
99 and box_kind = H | V | HV | HOV
100 and box_spec = box_kind * bool * bool (* kind, spacing, indent *)
105 | Below of term * term
106 | Above of term * term
107 | Frac of term * term
108 | Over of term * term
109 | Atop of term * term
110 (* | array of term * literal option * literal option
111 |+ column separator, row separator +| *)
113 | Root of term * term (* argument, index *)
115 | Box of box_spec * term list
120 | List0 of term * literal option (* pattern, separator *)
121 | List1 of term * literal option (* pattern, separator *)
125 | Fold of fold_kind * term * string list * term
126 (* base case pattern, recursive case bound names, recursive case pattern *)
127 | Default of term * term (* "some" case pattern, "none" case pattern *)
129 | If of term * term * term (* test, pattern if true, pattern if false *)
131 and pattern_variable =
132 (* level 1 and 2 variables *)
137 (* level 1 variables *)
138 | Ascription of term * string
140 (* level 2 variables *)
143 type argument_pattern =
144 | IdentArg of int * string (* eta-depth, name *)
146 type cic_appl_pattern =
147 | UriPattern of UriManager.uri
148 | VarPattern of string
150 | ApplPattern of cic_appl_pattern list
152 (** {2 Standard precedences} *)
159 let let_in_assoc = Gramext.NonA
160 let binder_assoc = Gramext.RightA
161 let apply_assoc = Gramext.LeftA
162 let simple_assoc = Gramext.NonA