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(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2012 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
open Names
open Term
open Context
open Environ
open Termops
open Reductionops
open Evd
open Locus
(** {4 Unification for type inference. } *)
exception UnableToUnify of evar_map * Pretype_errors.unification_error
(** {6 Main unification algorithm for type inference. } *)
(** returns exception NotUnifiable with best known evar_map if not unifiable *)
val the_conv_x : ?ts:transparent_state -> env -> constr -> constr -> evar_map -> evar_map
val the_conv_x_leq : ?ts:transparent_state -> env -> constr -> constr -> evar_map -> evar_map
(** The same function resolving evars by side-effect and
catching the exception *)
val e_conv : ?ts:transparent_state -> env -> evar_map ref -> constr -> constr -> bool
val e_cumul : ?ts:transparent_state -> env -> evar_map ref -> constr -> constr -> bool
(** {6 Unification heuristics. } *)
(** Try heuristics to solve pending unification problems and to solve
evars with candidates *)
val consider_remaining_unif_problems : ?ts:transparent_state -> env -> evar_map -> evar_map
(** Check all pending unification problems are solved and raise an
error otherwise *)
val check_problems_are_solved : evar_map -> unit
(** Check if a canonical structure is applicable *)
val check_conv_record : constr * types stack -> constr * types stack ->
constr * constr list * (constr list * constr list) *
(constr list * types list) *
(constr stack * types stack) * constr *
(int * constr)
(** Try to solve problems of the form ?x[args] = c by second-order
matching, using typing to select occurrences *)
val second_order_matching : transparent_state -> env -> evar_map ->
existential -> occurrences option list -> constr -> evar_map * bool
(** Declare function to enforce evars resolution by using typing constraints *)
val set_solve_evars : (env -> evar_map ref -> constr -> constr) -> unit
(**/**)
(* For debugging *)
val evar_conv_x : transparent_state ->
env -> evar_map -> conv_pb -> constr -> constr -> Evarsolve.unification_result
val evar_eqappr_x : ?rhs_is_already_stuck:bool -> transparent_state ->
env -> evar_map ->
conv_pb -> state * Cst_stack.t -> state * Cst_stack.t ->
Evarsolve.unification_result
(**/**)
|
