Imported Upstream version 8.0pl1upstream/8.0pl1

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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: inductive.mli,v 1.57.8.1 2004/07/16 19:30:25 herbelin Exp $ i*)
+
+(*i*)
+open Names
+open Univ
+open Term
+open Declarations
+open Environ
+(*i*)
+
+(*s Extracting an inductive type from a construction *)
+
+(* [find_m*type env sigma c] coerce [c] to an recursive type (I args).
+   [find_rectype], [find_inductive] and [find_coinductive]
+   respectively accepts any recursive type, only an inductive type and
+   only a coinductive type.
+   They raise [Not_found] if not convertible to a recursive type. *)
+
+val find_rectype     : env -> types -> inductive * constr list
+val find_inductive   : env -> types -> inductive * constr list
+val find_coinductive : env -> types -> inductive * constr list
+
+(*s Fetching information in the environment about an inductive type.
+    Raises [Not_found] if the inductive type is not found. *)
+val lookup_mind_specif :
+  env -> inductive -> mutual_inductive_body * one_inductive_body
+
+(*s Functions to build standard types related to inductive *)
+
+val type_of_inductive    : env -> inductive -> types
+
+(* Return type as quoted by the user *)
+val type_of_constructor  : env -> constructor -> types
+
+(* Return constructor types in normal form *)
+val arities_of_constructors : env -> inductive -> types array
+
+(* Transforms inductive specification into types (in nf) *)
+val arities_of_specif : mutual_inductive -> 
+  mutual_inductive_body * one_inductive_body -> types array 
+
+(* [type_case_branches env (I,args) (p:A) c] computes useful types
+   about the following Cases expression:
+      <p>Cases (c :: (I args)) of b1..bn end
+   It computes the type of every branch (pattern variables are
+   introduced by products), the type for the whole expression, and
+   the universe constraints generated.
+ *)
+val type_case_branches :
+  env -> inductive * constr list -> unsafe_judgment -> constr
+    -> types array * types * constraints
+
+(* Check a [case_info] actually correspond to a Case expression on the
+   given inductive type. *)
+val check_case_info : env -> inductive -> case_info -> unit
+
+(* Find the ultimate inductive in the mind_equiv chain *)
+
+val scrape_mind : env -> mutual_inductive -> mutual_inductive
+
+(*s Guard conditions for fix and cofix-points. *)
+val check_fix : env -> fixpoint -> unit
+val check_cofix : env -> cofixpoint -> unit