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|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2010 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(*i $Id: cases.mli 13323 2010-07-24 15:57:30Z herbelin $ i*)
(*i*)
open Util
open Names
open Term
open Evd
open Environ
open Inductiveops
open Rawterm
open Evarutil
(*i*)
type pattern_matching_error =
| BadPattern of constructor * constr
| BadConstructor of constructor * inductive
| WrongNumargConstructor of constructor * int
| WrongNumargInductive of inductive * int
| WrongPredicateArity of constr * constr * constr
| NeedsInversion of constr * constr
| UnusedClause of cases_pattern list
| NonExhaustive of cases_pattern list
| CannotInferPredicate of (constr * types) array
exception PatternMatchingError of env * pattern_matching_error
val raise_pattern_matching_error : (loc * env * pattern_matching_error) -> 'a
val error_wrong_numarg_constructor_loc : loc -> env -> constructor -> int -> 'a
val error_wrong_numarg_inductive_loc : loc -> env -> inductive -> int -> 'a
val error_bad_constructor_loc : loc -> constructor -> inductive -> 'a
val error_bad_pattern_loc : loc -> constructor -> constr -> 'a
val error_wrong_predicate_arity_loc : loc -> env -> constr -> constr -> constr -> 'a
val error_needs_inversion : env -> constr -> types -> 'a
val set_impossible_default_clause : constr * types -> unit
(*s Compilation of pattern-matching. *)
type alias_constr =
| DepAlias
| NonDepAlias
type dep_status = KnownDep | KnownNotDep | DepUnknown
type tomatch_type =
| IsInd of types * inductive_type * name list
| NotInd of constr option * types
type tomatch_status =
| Pushed of ((constr * tomatch_type) * int list * (name * dep_status))
| Alias of (constr * constr * alias_constr * constr)
| Abstract of rel_declaration
module type S = sig
val compile_cases :
loc -> case_style ->
(type_constraint -> env -> evar_map ref -> rawconstr -> unsafe_judgment) * evar_map ref ->
type_constraint ->
env -> rawconstr option * tomatch_tuples * cases_clauses ->
unsafe_judgment
end
module Cases_F(C : Coercion.S) : S
|
