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|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(*i $Id: topconstr.mli 9976 2007-07-12 11:58:30Z msozeau $ i*)
(*i*)
open Pp
open Util
open Names
open Libnames
open Rawterm
open Term
open Mod_subst
(*i*)
(*s This is the subtype of rawconstr allowed in syntactic extensions *)
(* No location since intended to be substituted at any place of a text *)
(* Complex expressions such as fixpoints and cofixpoints are excluded, *)
(* non global expressions such as existential variables also *)
type aconstr =
(* Part common to [rawconstr] and [cases_pattern] *)
| ARef of global_reference
| AVar of identifier
| AApp of aconstr * aconstr list
| AList of identifier * identifier * aconstr * aconstr * bool
(* Part only in [rawconstr] *)
| ALambda of name * aconstr * aconstr
| AProd of name * aconstr * aconstr
| ALetIn of name * aconstr * aconstr
| ACases of aconstr option *
(aconstr * (name * (inductive * int * name list) option)) list *
(cases_pattern list * aconstr) list
| ALetTuple of name list * (name * aconstr option) * aconstr * aconstr
| AIf of aconstr * (name * aconstr option) * aconstr * aconstr
| ASort of rawsort
| AHole of Evd.hole_kind
| APatVar of patvar
| ACast of aconstr * aconstr cast_type
(**********************************************************************)
(* Translate a rawconstr into a notation given the list of variables *)
(* bound by the notation; also interpret recursive patterns *)
val aconstr_of_rawconstr : identifier list -> rawconstr -> aconstr
(* Name of the special identifier used to encode recursive notations *)
val ldots_var : identifier
(* Equality of rawconstr (warning: only partially implemented) *)
val eq_rawconstr : rawconstr -> rawconstr -> bool
(**********************************************************************)
(* Re-interpret a notation as a rawconstr, taking care of binders *)
val rawconstr_of_aconstr_with_binders : loc ->
('a -> identifier -> 'a * identifier) ->
('a -> aconstr -> rawconstr) -> 'a -> aconstr -> rawconstr
val rawconstr_of_aconstr : loc -> aconstr -> rawconstr
(**********************************************************************)
(* Substitution of kernel names, avoiding a list of bound identifiers *)
val subst_aconstr : substitution -> identifier list -> aconstr -> aconstr
(**********************************************************************)
(* [match_aconstr metas] matches a rawconstr against an aconstr with *)
(* metavariables in [metas]; raise [No_match] if the matching fails *)
exception No_match
type scope_name = string
type tmp_scope_name = scope_name
type interpretation =
(identifier * (tmp_scope_name option * scope_name list)) list * aconstr
val match_aconstr : rawconstr -> interpretation ->
(rawconstr * (tmp_scope_name option * scope_name list)) list
(**********************************************************************)
(*s Concrete syntax for terms *)
type notation = string
type explicitation = ExplByPos of int | ExplByName of identifier
type proj_flag = int option (* [Some n] = proj of the n-th visible argument *)
type prim_token = Numeral of Bigint.bigint | String of string
type cases_pattern_expr =
| CPatAlias of loc * cases_pattern_expr * identifier
| CPatCstr of loc * reference * cases_pattern_expr list
| CPatAtom of loc * reference option
| CPatOr of loc * cases_pattern_expr list
| CPatNotation of loc * notation * cases_pattern_expr list
| CPatPrim of loc * prim_token
| CPatDelimiters of loc * string * cases_pattern_expr
type constr_expr =
| CRef of reference
| CFix of loc * identifier located * fixpoint_expr list
| CCoFix of loc * identifier located * cofixpoint_expr list
| CArrow of loc * constr_expr * constr_expr
| CProdN of loc * (name located list * constr_expr) list * constr_expr
| CLambdaN of loc * (name located list * constr_expr) list * constr_expr
| CLetIn of loc * name located * constr_expr * constr_expr
| CAppExpl of loc * (proj_flag * reference) * constr_expr list
| CApp of loc * (proj_flag * constr_expr) *
(constr_expr * explicitation located option) list
| CCases of loc * constr_expr option *
(constr_expr * (name option * constr_expr option)) list *
(loc * cases_pattern_expr list list * constr_expr) list
| CLetTuple of loc * name list * (name option * constr_expr option) *
constr_expr * constr_expr
| CIf of loc * constr_expr * (name option * constr_expr option)
* constr_expr * constr_expr
| CHole of loc
| CPatVar of loc * (bool * patvar)
| CEvar of loc * existential_key
| CSort of loc * rawsort
| CCast of loc * constr_expr * constr_expr cast_type
| CNotation of loc * notation * constr_expr list
| CPrim of loc * prim_token
| CDelimiters of loc * string * constr_expr
| CDynamic of loc * Dyn.t
and fixpoint_expr =
identifier * (int option * recursion_order_expr) * local_binder list * constr_expr * constr_expr
and cofixpoint_expr =
identifier * local_binder list * constr_expr * constr_expr
and recursion_order_expr =
| CStructRec
| CWfRec of constr_expr
| CMeasureRec of constr_expr
and local_binder =
| LocalRawDef of name located * constr_expr
| LocalRawAssum of name located list * constr_expr
(**********************************************************************)
(* Utilities on constr_expr *)
val constr_loc : constr_expr -> loc
val cases_pattern_expr_loc : cases_pattern_expr -> loc
val replace_vars_constr_expr :
(identifier * identifier) list -> constr_expr -> constr_expr
val free_vars_of_constr_expr : constr_expr -> Idset.t
val occur_var_constr_expr : identifier -> constr_expr -> bool
(* Specific function for interning "in indtype" syntax of "match" *)
val ids_of_cases_indtype : constr_expr -> identifier list
val mkIdentC : identifier -> constr_expr
val mkRefC : reference -> constr_expr
val mkAppC : constr_expr * constr_expr list -> constr_expr
val mkCastC : constr_expr * constr_expr cast_type -> constr_expr
val mkLambdaC : name located list * constr_expr * constr_expr -> constr_expr
val mkLetInC : name located * constr_expr * constr_expr -> constr_expr
val mkProdC : name located list * constr_expr * constr_expr -> constr_expr
val coerce_to_id : constr_expr -> identifier located
val abstract_constr_expr : constr_expr -> local_binder list -> constr_expr
val prod_constr_expr : constr_expr -> local_binder list -> constr_expr
(* For binders parsing *)
(* Includes let binders *)
val local_binders_length : local_binder list -> int
(* Excludes let binders *)
val local_assums_length : local_binder list -> int
(* Does not take let binders into account *)
val names_of_local_assums : local_binder list -> name located list
(* With let binders *)
val names_of_local_binders : local_binder list -> name located list
(* Used in correctness and interface; absence of var capture not guaranteed *)
(* in pattern-matching clauses and in binders of the form [x,y:T(x)] *)
val map_constr_expr_with_binders :
(identifier -> 'a -> 'a) -> ('a -> constr_expr -> constr_expr) ->
'a -> constr_expr -> constr_expr
(**********************************************************************)
(* Concrete syntax for modules and module types *)
type with_declaration_ast =
| CWith_Module of identifier list located * qualid located
| CWith_Definition of identifier list located * constr_expr
type module_type_ast =
| CMTEident of qualid located
| CMTEwith of module_type_ast * with_declaration_ast
type module_ast =
| CMEident of qualid located
| CMEapply of module_ast * module_ast
|
