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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: pattern.mli,v 1.17.2.1 2004/07/16 19:30:45 herbelin Exp $ i*)
(*i*)
open Pp
open Names
open Sign
open Term
open Environ
open Libnames
open Nametab
open Rawterm
(*i*)
(* Pattern variables *)
type patvar_map = (patvar * constr) list
val pr_patvar : patvar -> std_ppcmds
(* Only for v7 parsing/printing *)
val patvar_of_int : int -> patvar
val patvar_of_int_v7 : int -> patvar
(* Patterns *)
type constr_pattern =
| PRef of global_reference
| PVar of identifier
| PEvar of existential_key * constr_pattern array
| PRel of int
| PApp of constr_pattern * constr_pattern array
| PSoApp of patvar * constr_pattern list
| PLambda of name * constr_pattern * constr_pattern
| PProd of name * constr_pattern * constr_pattern
| PLetIn of name * constr_pattern * constr_pattern
| PSort of rawsort
| PMeta of patvar option
| PCase of (inductive option * case_style)
* constr_pattern option * constr_pattern * constr_pattern array
| PFix of fixpoint
| PCoFix of cofixpoint
val occur_meta_pattern : constr_pattern -> bool
val subst_pattern : substitution -> constr_pattern -> constr_pattern
type constr_label =
| ConstNode of constant
| IndNode of inductive
| CstrNode of constructor
| VarNode of identifier
val label_of_ref : global_reference -> constr_label
val subst_label : substitution -> constr_label -> constr_label
exception BoundPattern
(* [head_pattern_bound t] extracts the head variable/constant of the
type [t] or raises [BoundPattern] (even if a sort); it raises an anomaly
if [t] is an abstraction *)
val head_pattern_bound : constr_pattern -> constr_label
(* [head_of_constr_reference c] assumes [r] denotes a reference and
returns its label; raises an anomaly otherwise *)
val head_of_constr_reference : Term.constr -> constr_label
(* [pattern_of_constr c] translates a term [c] with metavariables into
a pattern; currently, no destructor (Cases, Fix, Cofix) and no
existential variable are allowed in [c] *)
val pattern_of_constr : constr -> constr_pattern
(* [pattern_of_rawconstr l c] translates a term [c] with metavariables into
a pattern; variables bound in [l] are replaced by the pattern to which they
are bound *)
val pattern_of_rawconstr : rawconstr ->
patvar list * constr_pattern
val instantiate_pattern :
(identifier * constr_pattern) list -> constr_pattern -> constr_pattern
|
