Revision ea8470542dd0cd24272d92c68f0e3eb18eb25ff4 authored by Grégoire Henry on 04 March 2019, 14:50:46 UTC, committed by Benjamin Canou on 24 April 2019, 22:35:17 UTC
1 parent af1613a
binary_size.ml
(*****************************************************************************)
(* *)
(* Open Source License *)
(* Copyright (c) 2018 Dynamic Ledger Solutions, Inc. <contact@tezos.com> *)
(* *)
(* Permission is hereby granted, free of charge, to any person obtaining a *)
(* copy of this software and associated documentation files (the "Software"),*)
(* to deal in the Software without restriction, including without limitation *)
(* the rights to use, copy, modify, merge, publish, distribute, sublicense, *)
(* and/or sell copies of the Software, and to permit persons to whom the *)
(* Software is furnished to do so, subject to the following conditions: *)
(* *)
(* The above copyright notice and this permission notice shall be included *)
(* in all copies or substantial portions of the Software. *)
(* *)
(* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR*)
(* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *)
(* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *)
(* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER*)
(* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING *)
(* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER *)
(* DEALINGS IN THE SOFTWARE. *)
(* *)
(*****************************************************************************)
let bool = 1
let int8 = 1
let uint8 = 1
let char = 1
let int16 = 2
let uint16 = 2
let uint30 = 4
let uint32 = 4
let uint64 = 8
let int31 = 4
let int32 = 4
let int64 = 8
let float = 8
type tag_size = [ `Uint8 | `Uint16 ]
let tag_size = function
| `Uint8 -> uint8
| `Uint16 -> uint16
type signed_integer = [ `Int31 | `Int16 | `Int8 ]
type unsigned_integer = [ `Uint30 | `Uint16 | `Uint8 ]
type integer = [ signed_integer | unsigned_integer ]
let signed_range_to_size min max : [> signed_integer ] =
if min >= ~-128 && max <= 127
then `Int8
else if min >= ~-32_768 && max <= 32_767
then `Int16
else `Int31
(* max should be centered at zero *)
let unsigned_range_to_size max : [> unsigned_integer ] =
assert (max >= 0) ;
if max <= 255
then `Uint8
else if max <= 65535
then `Uint16
else `Uint30
let integer_to_size = function
| `Int31 -> int31
| `Int16 -> int16
| `Int8 -> int8
| `Uint30 -> uint30
| `Uint16 -> uint16
| `Uint8 -> uint8
let max_int = function
| `Uint30 | `Int31 -> (1 lsl 30) - 1
| `Int16 -> 1 lsl 15 - 1
| `Int8 -> 1 lsl 7 - 1
| `Uint16 -> 1 lsl 16 - 1
| `Uint8 -> 1 lsl 8 - 1
let min_int = function
| `Uint8 | `Uint16 | `Uint30 -> 0
| `Int31 -> - (1 lsl 30)
| `Int16 -> - (1 lsl 15)
| `Int8 -> - (1 lsl 7)
let range_to_size ~minimum ~maximum : integer =
if minimum < 0
then signed_range_to_size minimum maximum
else unsigned_range_to_size (maximum - minimum)
let enum_size arr =
unsigned_range_to_size (Array.length arr)
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