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(* $Id$ *)
(*i*)
open Names
open Sign
open Term
open Environ
(*i*)
type constr_pattern =
| PRef of constr array reference
| PRel of int
| PApp of constr_pattern * constr_pattern array
| PSoApp of int * constr list
| PBinder of binder_kind * name * constr_pattern * constr_pattern
| PLet of identifier * constr_pattern * constr_pattern * constr_pattern
| PSort of Rawterm.rawsort
| PMeta of int option
| PCase of constr_pattern option * constr_pattern * constr_pattern array
val occur_meta_pattern : constr_pattern -> bool
type constr_label =
| ConstNode of section_path
| IndNode of inductive_path
| CstrNode of constructor_path
| VarNode of identifier
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
exception PatternMatchingFailure
val matches :
constr_pattern -> constr -> (int * constr) list
val matches_conv :
env -> 'a Evd.evar_map -> constr_pattern -> constr -> (int * constr) list
val is_matching :
constr_pattern -> constr -> bool
val is_matching_conv :
env -> 'a Evd.evar_map -> constr_pattern -> constr -> bool
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