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 of CicUniv.universe | `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)
42 type href = UriManager.uri
45 [ `Loc of location (* source file location *)
46 | `IdRef of string (* ACic pointer *)
47 | `Level of int * Gramext.g_assoc (* precedence, associativity *)
48 | `XmlAttrs of (string option * string * string) list
49 (* list of XML attributes: namespace, name, value *)
50 | `Raw of string (* unparsed version *)
59 type case_indtype = string * href option
61 (** To be increased each time the term type below changes, used for "safe"
68 | AttributedTerm of term_attribute * term
71 | Binder of binder_kind * capture_variable * term (* kind, name, body *)
72 | Case of term * case_indtype option * term option *
73 (case_pattern * term) list
74 (* what to match, inductive type, out type, <pattern,action> list *)
76 | LetIn of capture_variable * term * term (* name, body, where *)
77 | LetRec of induction_kind * (capture_variable * term * int) list * term
78 (* (name, body, decreasing argument) list, where *)
79 | Ident of string * subst list option
80 (* literal, substitutions.
81 * Some [] -> user has given an empty explicit substitution list
82 * None -> user has given no explicit substitution list *)
84 | Meta of int * meta_subst list
85 | Num of string * int (* literal, instance *)
87 | Symbol of string * int (* canonical name, instance *)
89 | UserInput (* place holder for user input, used by MatitaConsole, not to be
91 | Uri of string * subst list option (* as Ident, for long names *)
93 (* Syntax pattern extensions *)
96 | Layout of layout_pattern
99 | Variable of pattern_variable
101 (* name, type. First component must be Ident or Variable (FreshVar _) *)
102 and capture_variable = term * term option
104 and meta_subst = term option
105 and subst = string * term
106 and case_pattern = string * href option * capture_variable list
108 and box_kind = H | V | HV | HOV
109 and box_spec = box_kind * bool * bool (* kind, spacing, indent *)
114 | Below of term * term
115 | Above of term * term
116 | Frac of term * term
117 | Over of term * term
118 | Atop of term * term
119 (* | array of term * literal option * literal option
120 |+ column separator, row separator +| *)
122 | Root of term * term (* argument, index *)
124 | Box of box_spec * term list
129 | List0 of term * literal option (* pattern, separator *)
130 | List1 of term * literal option (* pattern, separator *)
134 | Fold of fold_kind * term * string list * term
135 (* base case pattern, recursive case bound names, recursive case pattern *)
136 | Default of term * term (* "some" case pattern, "none" case pattern *)
138 | If of term * term * term (* test, pattern if true, pattern if false *)
140 and pattern_variable =
141 (* level 1 and 2 variables *)
146 (* level 1 variables *)
147 | Ascription of term * string
149 (* level 2 variables *)
152 type argument_pattern =
153 | IdentArg of int * string (* eta-depth, name *)
155 type cic_appl_pattern =
156 | UriPattern of UriManager.uri
157 | VarPattern of string
159 | ApplPattern of cic_appl_pattern list
161 (** {2 Standard precedences} *)
168 let let_in_assoc = Gramext.NonA
169 let binder_assoc = Gramext.RightA
170 let apply_assoc = Gramext.LeftA
171 let simple_assoc = Gramext.NonA