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|
(************************************************************************)
(* * The Coq Proof Assistant / The Coq Development Team *)
(* v * INRIA, CNRS and contributors - Copyright 1999-2018 *)
(* <O___,, * (see CREDITS file for the list of authors) *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(* * (see LICENSE file for the text of the license) *)
(************************************************************************)
(** Entry keys for constr notations *)
type 'a entry = 'a Grammar.GMake(CLexer).Entry.e
type side = Left | Right
type gram_assoc = NonA | RightA | LeftA
type gram_position =
| First
| Last
| Before of string
| After of string
| Level of string
type production_position =
| BorderProd of side * gram_assoc option
| InternalProd
type production_level =
| NextLevel
| NumLevel of int
type constr_as_binder_kind =
| AsIdent
| AsIdentOrPattern
| AsStrictPattern
(** User-level types used to tell how to parse or interpret of the non-terminal *)
type 'a constr_entry_key_gen =
| ETName
| ETReference
| ETBigint
| ETBinder of bool (* open list of binders if true, closed list of binders otherwise *)
| ETConstr of 'a
| ETConstrAsBinder of constr_as_binder_kind * 'a
| ETPattern of bool * int option (* true = strict pattern, i.e. not a single variable *)
| ETOther of string * string
(** Entries level (left-hand side of grammar rules) *)
type constr_entry_key =
(production_level * production_position) constr_entry_key_gen
(** Entries used in productions, vernac side (e.g. "x bigint" or "x ident") *)
type simple_constr_prod_entry_key =
production_level option constr_entry_key_gen
(** Entries used in productions (in right-hand-side of grammar rules), to parse non-terminals *)
type binder_entry_kind = ETBinderOpen | ETBinderClosed of Tok.t list
type binder_target = ForBinder | ForTerm
type constr_prod_entry_key =
| ETProdName (* Parsed as a name (ident or _) *)
| ETProdReference (* Parsed as a global reference *)
| ETProdBigint (* Parsed as an (unbounded) integer *)
| ETProdConstr of (production_level * production_position) (* Parsed as constr or pattern *)
| ETProdPattern of int (* Parsed as pattern as a binder (as subpart of a constr) *)
| ETProdOther of string * string (* Intended for embedding custom entries in constr or pattern *)
| ETProdConstrList of (production_level * production_position) * Tok.t list (* Parsed as non-empty list of constr *)
| ETProdBinderList of binder_entry_kind (* Parsed as non-empty list of local binders *)
(** {5 AST for user-provided entries} *)
type 'a user_symbol =
| Ulist1 of 'a user_symbol
| Ulist1sep of 'a user_symbol * string
| Ulist0 of 'a user_symbol
| Ulist0sep of 'a user_symbol * string
| Uopt of 'a user_symbol
| Uentry of 'a
| Uentryl of 'a * int
(** {5 Type-safe grammar extension} *)
type ('self, 'a) symbol =
| Atoken : Tok.t -> ('self, string) symbol
| Alist1 : ('self, 'a) symbol -> ('self, 'a list) symbol
| Alist1sep : ('self, 'a) symbol * ('self, _) symbol -> ('self, 'a list) symbol
| Alist0 : ('self, 'a) symbol -> ('self, 'a list) symbol
| Alist0sep : ('self, 'a) symbol * ('self, _) symbol -> ('self, 'a list) symbol
| Aopt : ('self, 'a) symbol -> ('self, 'a option) symbol
| Aself : ('self, 'self) symbol
| Anext : ('self, 'self) symbol
| Aentry : 'a entry -> ('self, 'a) symbol
| Aentryl : 'a entry * int -> ('self, 'a) symbol
| Arules : 'a rules list -> ('self, 'a) symbol
and ('self, _, 'r) rule =
| Stop : ('self, 'r, 'r) rule
| Next : ('self, 'a, 'r) rule * ('self, 'b) symbol -> ('self, 'b -> 'a, 'r) rule
and ('a, 'r) norec_rule = { norec_rule : 's. ('s, 'a, 'r) rule }
and 'a rules =
| Rules : ('act, Loc.t -> 'a) norec_rule * 'act -> 'a rules
type 'a production_rule =
| Rule : ('a, 'act, Loc.t -> 'a) rule * 'act -> 'a production_rule
type 'a single_extend_statment =
string option *
(** Level *)
gram_assoc option *
(** Associativity *)
'a production_rule list
(** Symbol list with the interpretation function *)
type 'a extend_statment =
gram_position option *
'a single_extend_statment list
|
