package tezos-protocol-016-PtMumbai

You can search for identifiers within the package.
in-package search v0.2.0
tezos-protocol-016-PtMumbai
Legend:
Page
Library
Module
Module type
Parameter
Class
Class type
Source
Source file `tez_repr.ml`

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
(*****************************************************************************)
(*                                                                           *)
(* Open Source License                                                       *)
(* Copyright (c) 2018 Dynamic Ledger Solutions, Inc. <contact@tezos.com>     *)
(* Copyright (c) 2020-2022 Nomadic Labs <contact@nomadic-labs.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 id = "tez"

let name = "mutez"

open Compare.Int64 (* invariant: positive *)

type repr = t

type t = Tez_tag of repr [@@ocaml.unboxed]

type error +=
  | Addition_overflow of t * t (* `Temporary *)
  | Subtraction_underflow of t * t (* `Temporary *)
  | Multiplication_overflow of t * int64 (* `Temporary *)
  | Negative_multiplicator of t * int64 (* `Temporary *)
  | Invalid_divisor of t * int64

(* `Temporary *)

let zero = Tez_tag 0L

(* all other constant are defined from the value of one micro tez *)
let one_mutez = Tez_tag 1L

let max_mutez = Tez_tag Int64.max_int

let mul_int (Tez_tag tez) i = Tez_tag (Int64.mul tez i)

let one_cent = mul_int one_mutez 10_000L

let fifty_cents = mul_int one_cent 50L

(* 1 tez = 100 cents = 1_000_000 mutez *)
let one = mul_int one_cent 100L

let of_string s =
  let triplets = function
    | hd :: tl ->
        let len = String.length hd in
        Compare.Int.(
          len <= 3 && len > 0 && List.for_all (fun s -> String.length s = 3) tl)
    | [] -> false
  in
  let integers s = triplets (String.split_on_char ',' s) in
  let decimals s =
    let l = String.split_on_char ',' s in
    if Compare.List_length_with.(l > 2) then false else triplets (List.rev l)
  in
  let parse left right =
    let remove_commas s = String.concat "" (String.split_on_char ',' s) in
    let pad_to_six s =
      let len = String.length s in
      String.init 6 (fun i -> if Compare.Int.(i < len) then s.[i] else '0')
    in
    let prepared = remove_commas left ^ pad_to_six (remove_commas right) in
    Option.map (fun i -> Tez_tag i) (Int64.of_string_opt prepared)
  in
  match String.split_on_char '.' s with
  | [left; right] ->
      if String.contains s ',' then
        if integers left && decimals right then parse left right else None
      else if
        Compare.Int.(String.length right > 0)
        && Compare.Int.(String.length right <= 6)
      then parse left right
      else None
  | [left] ->
      if (not (String.contains s ',')) || integers left then parse left ""
      else None
  | _ -> None

let pp ppf (Tez_tag amount) =
  let mult_int = 1_000_000L in
  let rec left ppf amount =
    let d, r = (Int64.(div amount 1000L), Int64.(rem amount 1000L)) in
    if d > 0L then Format.fprintf ppf "%a%03Ld" left d r
    else Format.fprintf ppf "%Ld" r
  in
  let right ppf amount =
    let triplet ppf v =
      if Compare.Int.(v mod 10 > 0) then Format.fprintf ppf "%03d" v
      else if Compare.Int.(v mod 100 > 0) then Format.fprintf ppf "%02d" (v / 10)
      else Format.fprintf ppf "%d" (v / 100)
    in
    let hi, lo = (amount / 1000, amount mod 1000) in
    if Compare.Int.(lo = 0) then Format.fprintf ppf "%a" triplet hi
    else Format.fprintf ppf "%03d%a" hi triplet lo
  in
  let ints, decs =
    (Int64.(div amount mult_int), Int64.(to_int (rem amount mult_int)))
  in
  left ppf ints ;
  if Compare.Int.(decs > 0) then Format.fprintf ppf ".%a" right decs

let to_string t = Format.asprintf "%a" pp t

let ( -? ) tez1 tez2 =
  let (Tez_tag t1) = tez1 in
  let (Tez_tag t2) = tez2 in
  if t2 <= t1 then ok (Tez_tag (Int64.sub t1 t2))
  else error (Subtraction_underflow (tez1, tez2))

let sub_opt (Tez_tag t1) (Tez_tag t2) =
  if t2 <= t1 then Some (Tez_tag (Int64.sub t1 t2)) else None

let ( +? ) tez1 tez2 =
  let (Tez_tag t1) = tez1 in
  let (Tez_tag t2) = tez2 in
  let t = Int64.add t1 t2 in
  if t < t1 then error (Addition_overflow (tez1, tez2)) else ok (Tez_tag t)

let ( *? ) tez m =
  let (Tez_tag t) = tez in
  if m < 0L then error (Negative_multiplicator (tez, m))
  else if m = 0L then ok (Tez_tag 0L)
  else if t > Int64.(div max_int m) then
    error (Multiplication_overflow (tez, m))
  else ok (Tez_tag (Int64.mul t m))

let ( /? ) tez d =
  let (Tez_tag t) = tez in
  if d <= 0L then error (Invalid_divisor (tez, d))
  else ok (Tez_tag (Int64.div t d))

let mul_exn t m =
  match t *? Int64.(of_int m) with
  | Ok v -> v
  | Error _ -> invalid_arg "mul_exn"

let div_exn t d =
  match t /? Int64.(of_int d) with
  | Ok v -> v
  | Error _ -> invalid_arg "div_exn"

let of_mutez t = if t < 0L then None else Some (Tez_tag t)

let of_mutez_exn x =
  match of_mutez x with None -> invalid_arg "Tez.of_mutez" | Some v -> v

let to_mutez (Tez_tag t) = t

let encoding =
  let open Data_encoding in
  let decode (Tez_tag t) = Z.of_int64 t in
  let encode = Json.wrap_error (fun i -> Tez_tag (Z.to_int64 i)) in
  Data_encoding.def name (check_size 10 (conv decode encode n))

let () =
  let open Data_encoding in
  register_error_kind
    `Temporary
    ~id:(id ^ ".addition_overflow")
    ~title:("Overflowing " ^ id ^ " addition")
    ~pp:(fun ppf (opa, opb) ->
      Format.fprintf
        ppf
        "Overflowing addition of %a %s and %a %s"
        pp
        opa
        id
        pp
        opb
        id)
    ~description:("An addition of two " ^ id ^ " amounts overflowed")
    (obj1 (req "amounts" (tup2 encoding encoding)))
    (function Addition_overflow (a, b) -> Some (a, b) | _ -> None)
    (fun (a, b) -> Addition_overflow (a, b)) ;
  register_error_kind
    `Temporary
    ~id:(id ^ ".subtraction_underflow")
    ~title:("Underflowing " ^ id ^ " subtraction")
    ~pp:(fun ppf (opa, opb) ->
      Format.fprintf
        ppf
        "Underflowing subtraction of %a %s and %a %s"
        pp
        opa
        id
        pp
        opb
        id)
    ~description:
      ("A subtraction of two " ^ id
     ^ " amounts underflowed (i.e., would have led to a negative amount)")
    (obj1 (req "amounts" (tup2 encoding encoding)))
    (function Subtraction_underflow (a, b) -> Some (a, b) | _ -> None)
    (fun (a, b) -> Subtraction_underflow (a, b)) ;
  register_error_kind
    `Temporary
    ~id:(id ^ ".multiplication_overflow")
    ~title:("Overflowing " ^ id ^ " multiplication")
    ~pp:(fun ppf (opa, opb) ->
      Format.fprintf
        ppf
        "Overflowing multiplication of %a %s and %Ld"
        pp
        opa
        id
        opb)
    ~description:
      ("A multiplication of a " ^ id ^ " amount by an integer overflowed")
    (obj2 (req "amount" encoding) (req "multiplicator" int64))
    (function Multiplication_overflow (a, b) -> Some (a, b) | _ -> None)
    (fun (a, b) -> Multiplication_overflow (a, b)) ;
  register_error_kind
    `Temporary
    ~id:(id ^ ".negative_multiplicator")
    ~title:("Negative " ^ id ^ " multiplicator")
    ~pp:(fun ppf (opa, opb) ->
      Format.fprintf
        ppf
        "Multiplication of %a %s by negative integer %Ld"
        pp
        opa
        id
        opb)
    ~description:("Multiplication of a " ^ id ^ " amount by a negative integer")
    (obj2 (req "amount" encoding) (req "multiplicator" int64))
    (function Negative_multiplicator (a, b) -> Some (a, b) | _ -> None)
    (fun (a, b) -> Negative_multiplicator (a, b)) ;
  register_error_kind
    `Temporary
    ~id:(id ^ ".invalid_divisor")
    ~title:("Invalid " ^ id ^ " divisor")
    ~pp:(fun ppf (opa, opb) ->
      Format.fprintf
        ppf
        "Division of %a %s by non positive integer %Ld"
        pp
        opa
        id
        opb)
    ~description:
      ("Multiplication of a " ^ id ^ " amount by a non positive integer")
    (obj2 (req "amount" encoding) (req "divisor" int64))
    (function Invalid_divisor (a, b) -> Some (a, b) | _ -> None)
    (fun (a, b) -> Invalid_divisor (a, b))

type tez = t

let compare (Tez_tag x) (Tez_tag y) = compare x y

let ( = ) (Tez_tag x) (Tez_tag y) = x = y

let ( <> ) (Tez_tag x) (Tez_tag y) = x <> y

let ( < ) (Tez_tag x) (Tez_tag y) = x < y

let ( > ) (Tez_tag x) (Tez_tag y) = x > y

let ( <= ) (Tez_tag x) (Tez_tag y) = x <= y

let ( >= ) (Tez_tag x) (Tez_tag y) = x >= y

let equal (Tez_tag x) (Tez_tag y) = equal x y

let max (Tez_tag x) (Tez_tag y) = Tez_tag (max x y)

let min (Tez_tag x) (Tez_tag y) = Tez_tag (min x y)
package tezos-protocol-016-PtMumbai

Source file tez_repr.ml

Source file `tez_repr.ml`
