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|
(************************************************************************)
(* * The Coq Proof Assistant / The Coq Development Team *)
(* v * Copyright INRIA, CNRS and contributors *)
(* <O___,, * (see version control and CREDITS file for authors & dates) *)
(* \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) *)
(************************************************************************)
open Names
open Libnames
(** {6 Concrete syntax for terms } *)
(** Universes *)
type sort_name_expr =
| CSProp | CProp | CSet
| CType of qualid
| CRawType of Univ.Level.t (** Universes like "foo.1" have no qualid form *)
type univ_level_expr = sort_name_expr Glob_term.glob_sort_gen
type sort_expr = (sort_name_expr * int) list Glob_term.glob_sort_gen
type instance_expr = univ_level_expr list
(** Constraints don't have anonymous universes *)
type univ_constraint_expr = sort_name_expr * Univ.constraint_type * sort_name_expr
type universe_decl_expr = (lident list, univ_constraint_expr list) UState.gen_universe_decl
type cumul_univ_decl_expr =
((lident * Univ.Variance.t option) list, univ_constraint_expr list) UState.gen_universe_decl
type ident_decl = lident * universe_decl_expr option
type cumul_ident_decl = lident * cumul_univ_decl_expr option
type name_decl = lname * universe_decl_expr option
type notation_with_optional_scope = LastLonelyNotation | NotationInScope of string
type entry_level = int
type entry_relative_level = LevelLt of entry_level | LevelLe of entry_level | LevelSome
type notation_entry = InConstrEntry | InCustomEntry of string
type notation_entry_level = InConstrEntrySomeLevel | InCustomEntryLevel of string * entry_level
type notation_key = string
(* A notation associated to a given parsing rule *)
type notation = notation_entry * notation_key
(* A notation associated to a given interpretation *)
type specific_notation = notation_with_optional_scope * (notation_entry * notation_key)
type 'a or_by_notation_r =
| AN of 'a
| ByNotation of (string * string option)
type 'a or_by_notation = 'a or_by_notation_r CAst.t
(* NB: the last string in [ByNotation] is actually a [Notation.delimiters],
but this formulation avoids a useless dependency. *)
type explicitation =
| ExplByName of Id.t
| ExplByPos of int (* a reference to the n-th non-dependent implicit starting from left *)
type binder_kind =
| Default of Glob_term.binding_kind
| Generalized of Glob_term.binding_kind * bool
(** (Inner binding always Implicit) Outer bindings, typeclass-specific flag
for implicit generalization of superclasses *)
type explicit_flag = bool (** true = with "@" *)
type prim_token =
| Number of NumTok.Signed.t
| String of string
(** [constr_expr] is the abstract syntax tree produced by the parser *)
type cases_pattern_expr_r =
| CPatAlias of cases_pattern_expr * lname
| CPatCstr of qualid
* cases_pattern_expr list option * cases_pattern_expr list
(** [CPatCstr (_, c, Some l1, l2)] represents [(@ c l1) l2] *)
| CPatAtom of qualid option
| CPatOr of cases_pattern_expr list
| CPatNotation of notation_with_optional_scope option * notation * cases_pattern_notation_substitution
* cases_pattern_expr list (** CPatNotation (_, n, l1 ,l2) represents
(notation n applied with substitution l1)
applied to arguments l2 *)
| CPatPrim of prim_token
| CPatRecord of (qualid * cases_pattern_expr) list
| CPatDelimiters of string * cases_pattern_expr
| CPatCast of cases_pattern_expr * constr_expr
and cases_pattern_expr = cases_pattern_expr_r CAst.t
and kinded_cases_pattern_expr = cases_pattern_expr * Glob_term.binding_kind
and cases_pattern_notation_substitution =
cases_pattern_expr list * (* for constr subterms *)
cases_pattern_expr list list (* for recursive notations *)
and constr_expr_r =
| CRef of qualid * instance_expr option
| CFix of lident * fix_expr list
| CCoFix of lident * cofix_expr list
| CProdN of local_binder_expr list * constr_expr
| CLambdaN of local_binder_expr list * constr_expr
| CLetIn of lname * constr_expr * constr_expr option * constr_expr
| CAppExpl of (qualid * instance_expr option) * constr_expr list
| CApp of constr_expr * (constr_expr * explicitation CAst.t option) list
| CProj of explicit_flag * (qualid * instance_expr option)
* (constr_expr * explicitation CAst.t option) list * constr_expr
| CRecord of (qualid * constr_expr) list
(* representation of the "let" and "match" constructs *)
| CCases of Constr.case_style (* determines whether this value represents "let" or "match" construct *)
* constr_expr option (* return-clause *)
* case_expr list
* branch_expr list (* branches *)
| CLetTuple of lname list * (lname option * constr_expr option) *
constr_expr * constr_expr
| CIf of constr_expr * (lname option * constr_expr option)
* constr_expr * constr_expr
| CHole of Evar_kinds.t option * Namegen.intro_pattern_naming_expr * Genarg.raw_generic_argument option
| CPatVar of Pattern.patvar
| CEvar of Glob_term.existential_name CAst.t * (lident * constr_expr) list
| CSort of sort_expr
| CCast of constr_expr * Constr.cast_kind * constr_expr
| CNotation of notation_with_optional_scope option * notation * constr_notation_substitution
| CGeneralization of Glob_term.binding_kind * constr_expr
| CPrim of prim_token
| CDelimiters of string * constr_expr
| CArray of instance_expr option * constr_expr array * constr_expr * constr_expr
and constr_expr = constr_expr_r CAst.t
and case_expr = constr_expr (* expression that is being matched *)
* lname option (* as-clause *)
* cases_pattern_expr option (* in-clause *)
and branch_expr =
(cases_pattern_expr list list * constr_expr) CAst.t
and fix_expr =
lident * recursion_order_expr option *
local_binder_expr list * constr_expr * constr_expr
and cofix_expr =
lident * local_binder_expr list * constr_expr * constr_expr
and recursion_order_expr_r =
| CStructRec of lident
| CWfRec of lident * constr_expr
| CMeasureRec of lident option * constr_expr * constr_expr option (** argument, measure, relation *)
and recursion_order_expr = recursion_order_expr_r CAst.t
(* Anonymous defs allowed ?? *)
and local_binder_expr =
| CLocalAssum of lname list * binder_kind * constr_expr
| CLocalDef of lname * constr_expr * constr_expr option
| CLocalPattern of cases_pattern_expr
and constr_notation_substitution =
constr_expr list * (* for constr subterms *)
constr_expr list list * (* for recursive notations *)
kinded_cases_pattern_expr list * (* for binders *)
local_binder_expr list list (* for binder lists (recursive notations) *)
type constr_pattern_expr = constr_expr
(** Concrete syntax for modules and module types *)
type with_declaration_ast =
| CWith_Module of Id.t list CAst.t * qualid
| CWith_Definition of Id.t list CAst.t * universe_decl_expr option * constr_expr
type module_ast_r =
| CMident of qualid
| CMapply of module_ast * qualid
| CMwith of module_ast * with_declaration_ast
and module_ast = module_ast_r CAst.t
|
