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|
(****************************************************************************)
(* the diy toolsuite *)
(* *)
(* Jade Alglave, University College London, UK. *)
(* Luc Maranget, INRIA Paris-Rocquencourt, France. *)
(* *)
(* Copyright 2015-present Institut National de Recherche en Informatique et *)
(* en Automatique and the authors. All rights reserved. *)
(* *)
(* This software is governed by the CeCILL-B license under French law and *)
(* abiding by the rules of distribution of free software. You can use, *)
(* modify and/ or redistribute the software under the terms of the CeCILL-B *)
(* license as circulated by CEA, CNRS and INRIA at the following URL *)
(* "http://www.cecill.info". We also give a copy in LICENSE.txt. *)
(****************************************************************************)
(** Constants in code, can be a meta variable (for jingle) *)
open Printf
type k = Int of int | Meta of string
let zero = Int 0
and one = Int 1
let pp = function
| Int i -> sprintf "%i" i
| Meta v -> sprintf "&%s" v
let pp_prefix prf = function
| Int i -> sprintf "%s%i" prf i
| Meta v -> sprintf "&%s" v
let fatal_meta v =
Warn.fatal "Unexpected meta variable %s" (pp v)
let as_int = function
| Int i -> i
| Meta _ as v -> fatal_meta v
let compare k1 k2 = match k1,k2 with
| Int i1,Int i2 -> compare i1 i2
| Meta v1,Meta v2 -> String.compare v1 v2
| Int _,Meta _ -> -1
| Meta _,Int _ -> 1
|
