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(***********************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA-Rocquencourt & LRI-CNRS-Orsay *)
(* \VV/ *************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(***********************************************************************)
(*i $Id$ i*)
(*i*)
open Names
open Univ
open Term
open Declarations
open Environ
open Typeops
(*i*)
(*s The different kinds of errors that may result of a malformed inductive
definition. *)
type inductive_error =
(* These are errors related to inductive constructions in this module *)
| NonPos of env * constr * constr
| NotEnoughArgs of env * constr * constr
| NotConstructor of env * constr * constr
| NonPar of env * constr * int * constr * constr
| SameNamesTypes of identifier
| SameNamesConstructors of identifier * identifier
| NotAnArity of identifier
| BadEntry
(* These are errors related to recursors building in Indrec *)
| NotAllowedCaseAnalysis of bool * sorts * inductive
| BadInduction of bool * identifier * sorts
| NotMutualInScheme
exception InductiveError of inductive_error
(*s Declaration of inductive types. *)
(* Assume the following definition in concrete syntax:
\begin{verbatim}
Inductive I1 [x1:X1;...;xn:Xn] : A1 := c11 : T11 | ... | c1n1 : T1n1
...
with Ip [x1:X1;...;xn:Xn] : Ap := cp1 : Tp1 | ... | cpnp : Tpnp.
\end{verbatim}
then, in $i^{th}$ block, [mind_entry_params] is [[xn:Xn;...;x1:X1]];
[mind_entry_arity] is [Ai], defined in context [[[x1:X1;...;xn:Xn]];
[mind_entry_lc] is [Ti1;...;Tini], defined in context [[A'1;...;A'p;x1:X1;...;xn:Xn]] where [A'i] is [Ai] generalized over [[x1:X1;...;xn:Xn]].
*)
type one_inductive_entry = {
mind_entry_nparams : int;
mind_entry_params : (identifier * local_entry) list;
mind_entry_typename : identifier;
mind_entry_arity : constr;
mind_entry_consnames : identifier list;
mind_entry_lc : constr list }
type mutual_inductive_entry = {
mind_entry_finite : bool;
mind_entry_inds : one_inductive_entry list }
(*s The following function does checks on inductive declarations. *)
val check_inductive :
env -> mutual_inductive_entry -> mutual_inductive_body
|
