helm/software/matita/contribs/procedural/Coq/Num/NSyntax.mma

   1 (**************************************************************************)
   2 (*       ___                                                              *)
   3 (*      ||M||                                                             *)
   4 (*      ||A||       A project by Andrea Asperti                           *)
   5 (*      ||T||                                                             *)
   6 (*      ||I||       Developers:                                           *)
   7 (*      ||T||         The HELM team.                                      *)
   8 (*      ||A||         http://helm.cs.unibo.it                             *)
   9 (*      \   /                                                             *)
  10 (*       \ /        This file is distributed under the terms of the       *)
  11 (*        v         GNU General Public License Version 2                  *)
  12 (*                                                                        *)
  13 (**************************************************************************)
  14
  15 (* This file was automatically generated: do not edit *********************)
  16
  17 include "Coq.ma".
  18
  19 (*#**********************************************************************)
  20
  21 (*  v      *   The Coq Proof Assistant  /  The Coq Development Team    *)
  22
  23 (* <O___,, *        INRIA-Rocquencourt  &  LRI-CNRS-Orsay              *)
  24
  25 (*   \VV/  *************************************************************)
  26
  27 (*    //   *      This file is distributed under the terms of the      *)
  28
  29 (*         *       GNU Lesser General Public License Version 2.1       *)
  30
  31 (*#**********************************************************************)
  32
  33 (*#* Syntax for arithmetic *)
  34
  35 include "Num/Params.ma".
  36
  37 (* NOTATION
  38 Infix 6 "<" lt V8only 70.
  39 *)
  40
  41 (* NOTATION
  42 Infix 6 "<=" le V8only 70.
  43 *)
  44
  45 (* NOTATION
  46 Infix 6 ">" gt V8only 70.
  47 *)
  48
  49 (* NOTATION
  50 Infix 6 ">=" ge V8only 70.
  51 *)
  52
  53 (*i Infix 7 "+" plus V8only 50. i*)
  54
  55 (* NOTATION
  56 Grammar constr lassoc_constr4 :=
  57   squash_sum
  58   [ lassoc_constr4($c1) "+" lassoc_constr4($c2) ] ->
  59       case [$c2] of
  60         (SQUASH $T2) ->
  61             case [$c1] of
  62               (SQUASH $T1) -> [ (sumbool $T1 $T2) ] (* {T1}+{T2} *)
  63             | $_           -> [ (sumor $c1 $T2) ]   (* c1+{T2} *)
  64             esac
  65       | $_           -> [ (add $c1 $c2) ]           (* c1+c2 *)
  66       esac.
  67 *)
  68
  69 (* NOTATION
  70 Syntax constr
  71   level 4:
  72     sum [ (add $t1 $t2) ] -> [ [<hov 0> $t1:E [0 1] "+" $t2:L ] ]
  73 .
  74 *)
  75