Quellcode-Bibliothek

^© Kompilation durch diese Firma

[Weder Korrektheit noch Funktionsfähigkeit der Software werden zugesichert.]

Datei: locus.ml Sprache: SML

Original von: Coq^©

(************************************************************************)
(*         *   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)         *)
(************************************************************************)

open Names

(** Locus : positions in hypotheses and goals *)

type 'a or_var =
  | ArgArg of 'a
  | ArgVar of lident

(** {6 Occurrences} *)

type 'a occurrences_gen =
  | AllOccurrences
  | AtLeastOneOccurrence
  | AllOccurrencesBut of 'a list (** non-empty *)
  | NoOccurrences
  | OnlyOccurrences of 'a list (** non-empty *)

type occurrences_expr = (int or_var) occurrences_gen
type 'a with_occurrences = occurrences_expr * 'a

type occurrences = int occurrences_gen

(** {6 Locations}

  Selecting the occurrences in body (if any), in type, or in both *)

type hyp_location_flag = InHyp | InHypTypeOnly | InHypValueOnly

(** {6 Abstract clauses expressions}

  A [clause_expr] (and its instance [clause]) denotes occurrences and
  hypotheses in a goal in an abstract way; in particular, it can refer
  to the set of all hypotheses independently of the effective contents
  of the current goal

  Concerning the field [onhyps]:
   - [None] means *on every hypothesis*
   - [Some l] means on hypothesis belonging to l *)

type 'a hyp_location_expr = 'a with_occurrences * hyp_location_flag

type 'id clause_expr =
  { onhyps : 'id hyp_location_expr list option;
    concl_occs : occurrences_expr }

type clause = Id.t clause_expr

(** {6 Concrete view of occurrence clauses} *)

(** [clause_atom] refers either to an hypothesis location (i.e. an
   hypothesis with occurrences and a position, in body if any, in type
   or in both) or to some occurrences of the conclusion *)

type clause_atom =
  | OnHyp of Id.t * occurrences_expr * hyp_location_flag
  | OnConcl of occurrences_expr

(** A [concrete_clause] is an effective collection of occurrences
    in the hypotheses and the conclusion *)

type concrete_clause = clause_atom list

(** {6 A weaker form of clause with no mention of occurrences} *)

(** A [hyp_location] is an hypothesis together with a location *)

type hyp_location = Id.t * hyp_location_flag

(** A [goal_location] is either an hypothesis (together with a location)
    or the conclusion (represented by None) *)

type goal_location = hyp_location option

(** {6 Simple clauses, without occurrences nor location} *)

(** A [simple_clause] is a set of hypotheses, possibly extended with
   the conclusion (conclusion is represented by None) *)

type simple_clause = Id.t option list

(** {6 A notion of occurrences allowing to express "all occurrences
       convertible to the first which matches"} *)

type 'a or_like_first = AtOccs of 'a | LikeFirst

¤ Dauer der Verarbeitung: 0.1 Sekunden (vorverarbeitet) ¤

Download des Quellennavigators
Download des sprechenden Kalenders
in der Quellcodebibliothek suchen

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.