X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=components%2Fng_kernel%2FnCic.ml;fp=components%2Fng_kernel%2FnCic.ml;h=f32f6842638e196c3a74db75ea1761d0fbfd58e4;hp=0000000000000000000000000000000000000000;hb=f61af501fb4608cc4fb062a0864c774e677f0d76;hpb=58ae1809c352e71e7b5530dc41e2bfc834e1aef1

diff --git a/components/ng_kernel/nCic.ml b/components/ng_kernel/nCic.ml
new file mode 100644
index 000000000..f32f68426
--- /dev/null
+++ b/components/ng_kernel/nCic.ml
@@ -0,0 +1,105 @@
+(*
+    ||M||  This file is part of HELM, an Hypertextual, Electronic        
+    ||A||  Library of Mathematics, developed at the Computer Science     
+    ||T||  Department, University of Bologna, Italy.                     
+    ||I||                                                                
+    ||T||  HELM is free software; you can redistribute it and/or         
+    ||A||  modify it under the terms of the GNU General Public License   
+    \   /  version 2 or (at your option) any later version.      
+     \ /   This software is distributed as is, NO WARRANTY.     
+      V_______________________________________________________________ *)
+
+(* $Id: nCicReduction.ml 8250 2008-03-25 17:56:20Z tassi $ *)
+
+(********************************* TERMS ************************************)
+
+type sort = Prop | Type of int | CProp
+
+type implicit_annotation = [ `Closed | `Type | `Hole | `Term ]
+
+type lc_kind = Irl of int | Ctx of term list
+
+and local_context = int * lc_kind             (* shift (0 -> no shift), 
+                                                 subst (None means id) *) 
+and term =
+ | Rel      of int                            (* DeBruijn index, 1 based    *)
+ | Meta     of int * local_context
+ | Appl     of term list                      (* arguments                  *)
+ | Prod     of string * term * term           (* binder, source, target     *)
+ | Lambda   of string * term * term           (* binder, source, target     *)
+ | LetIn    of string * term * term * term    (* binder, type, term, body   *)
+(* Cast \def degenerate LetIn *)
+ | Const    of NReference.reference           (* ref has (indtype|constr)no *)
+ | Sort     of sort                           (* sort                       *)
+ | Implicit of implicit_annotation            (* ...                        *)
+ | Match    of NReference.reference *         (* ind. reference,            *)
+    term * term *                             (*  outtype, ind. term        *)
+    term list                                 (*  patterns                  *)
+
+
+(********************************* TYPING ***********************************)
+
+type context_entry =                       (* A declaration or definition *)
+ | Decl of term                            (* type *)
+ | Def  of term * term                     (* body, type *)
+
+type hypothesis = string * context_entry   
+
+type context = hypothesis list
+
+type conjecture = int * string option * context * term
+
+type metasenv = conjecture list
+
+type subst_entry = string option * context * term * term
+
+type substitution = (int * subst_entry) list
+
+
+(******************************** OBJECTS **********************************)
+
+type relevance = bool list (* relevance of arguments for conversion *)
+
+                    (* relevance, name, recno, ty, bo *)
+type inductiveFun = relevance * string * int * term * term 
+  (* if coinductive, the int has no meaning and must be set to -1 *)
+
+type constructor = relevance * string * term  (* id, type *)
+
+type inductiveType = 
+ relevance * string * term * constructor list    
+ (* relevance, typename, arity, constructors *)
+
+type def_flavour = (* presentational *)
+  [ `Definition | `Fact | `Lemma | `Theorem | `Corollary | `Example ]
+
+type def_pragma = (* pragmatic of the object *)
+  [ `Coercion of int
+  | `Elim of sort       (* elimination principle; universe is not relevant *)
+  | `Projection         (* record projection *)
+  | `InversionPrinciple (* inversion principle *)
+  | `Variant 
+  | `Local 
+  | `Regular ]            (* Local = hidden technicality *)
+ 
+type ind_pragma = (* pragmatic of the object *)
+  [ `Record of (string * bool * int) list | `Regular ]
+  (* inductive type that encodes a record; the arguments are the record 
+   * fields names and if they are coercions and then the coercion arity *)
+
+type generated = [ `Generated | `Provided ]
+
+type c_attr = generated * def_flavour * def_pragma
+type f_attr = generated * def_flavour
+type i_attr = generated * ind_pragma
+
+ (* invariant: metasenv and substitution have disjoint domains *)
+type obj_kind =
+ | Constant  of relevance * string * term option * term * c_attr
+ | Fixpoint  of bool * inductiveFun list * f_attr
+                (* true -> fix, funcs, arrts *)
+ | Inductive of bool * int * inductiveType list * i_attr
+                (* true -> inductive, leftno, types *)
+
+ (* the int must be 0 if the object has no body *)
+type obj = NUri.uri * int * metasenv * substitution * obj_kind