-
Notifications
You must be signed in to change notification settings - Fork 21
/
system.ex
790 lines (571 loc) · 23.3 KB
/
system.ex
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
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
defmodule Cldr.Number.System do
@moduledoc """
Functions to manage number systems which describe the numbering characteristics for a locale.
A number system defines the digits (if they exist in this number system) or
or rules (if the number system does not have decimal digits).
The system name is also used as a key to define the separators that are used
when formatting a number is this number_system. See
`Cldr.Number.Symbol.number_symbols_for/2`.
"""
alias Cldr.Locale
alias Cldr.Number.Symbol
alias Cldr.LanguageTag
alias Cldr.Math
@default_number_system_type :default
@type system_name :: atom()
@type types :: :default | :native | :traditional | :finance
defdelegate known_number_systems, to: Cldr
defdelegate known_number_system_types(backend), to: Cldr
@doc """
Return the default number system type name.
Currently this is `:default`. Note that this is
not the number system itself but the type of the
number system. It can be used to find the
default number system for a given locale with
`number_systems_for(locale)[default_number_system()]`.
## Example
iex> Cldr.Number.System.default_number_system_type
:default
"""
def default_number_system_type do
@default_number_system_type
end
@doc """
Return a map of all CLDR number systems and definitions.
## Example
iex> Cldr.Number.System.number_systems |> Enum.count
85
"""
@spec number_systems :: map()
@number_systems Cldr.Config.number_systems()
def number_systems do
@number_systems
end
@systems_with_digits Enum.reject(@number_systems, fn {_name, system} ->
is_nil(system[:digits])
end)
|> Map.new()
@doc """
Number systems that have their own digit characters defined.
"""
def systems_with_digits do
@systems_with_digits
end
@doc """
Returns the number system from a language tag
or locale name.
## Arguments
* `locale` is any language tag returned be `Cldr.Locale.new/2`
or a locale name in the list returned by `Cldr.known_locale_names/1`
* `backend` is any `Cldr` backend. That is, any module that
contains `use Cldr`
## Returns
* A number system name as an atom
## Examples
iex> Cldr.Number.System.number_system_from_locale "en-US-u-nu-thai", MyApp.Cldr
:thai
iex> Cldr.Number.System.number_system_from_locale "en-US", MyApp.Cldr
:latn
"""
@spec number_system_from_locale(LanguageTag.t(), Cldr.backend()) :: system_name
def number_system_from_locale(%LanguageTag{locale: %{number_system: nil}} = locale, backend) do
locale
|> number_systems_for!(backend)
|> Map.fetch!(default_number_system_type())
end
def number_system_from_locale(%LanguageTag{locale: %{number_system: number_system}}, _backend) do
number_system
end
def number_system_from_locale(%LanguageTag{} = locale, backend) do
locale
|> number_systems_for!(backend)
|> Map.fetch!(default_number_system_type())
end
def number_system_from_locale(locale_name, backend) when is_binary(locale_name) do
with {:ok, locale} <- Cldr.validate_locale(locale_name, backend) do
number_system_from_locale(locale, backend)
end
end
@doc """
Returns the number systems available for a locale
or `{:error, message}` if the locale is not known.
## Arguments
* `locale` is any valid locale name returned by `Cldr.known_locale_names/0`
or a `Cldr.LanguageTag` struct returned by ``Cldr.Locale.new!/2``
* `backend` is any `Cldr` backend. That is, any module that
contains `use Cldr`
## Examples
iex> Cldr.Number.System.number_systems_for "en", TestBackend.Cldr
{:ok, %{default: :latn, native: :latn}}
iex> Cldr.Number.System.number_systems_for "th", TestBackend.Cldr
{:ok, %{default: :latn, native: :thai}}
iex> Cldr.Number.System.number_systems_for "zz", TestBackend.Cldr
{:error, {Cldr.UnknownLocaleError, "The locale \\"zz\\" is not known."}}
"""
@spec number_systems_for(Cldr.Locale.locale_name() | LanguageTag.t(), Cldr.backend()) ::
{:ok, map()} | {:error, {module(), String.t()}}
def number_systems_for(locale, backend) do
Module.concat(backend, Number.System).number_systems_for(locale)
end
@doc """
Returns the number systems available for a locale
or raises if the locale is not known.
## Arguments
* `locale` is any valid locale name returned by `Cldr.known_locale_names/0`
or a `Cldr.LanguageTag` struct returned by ``Cldr.Locale.new!/2``
* `backend` is any `Cldr` backend. That is, any module that
contains `use Cldr`
## Examples
iex> Cldr.Number.System.number_systems_for! "en", TestBackend.Cldr
%{default: :latn, native: :latn}
iex> Cldr.Number.System.number_systems_for! "th", TestBackend.Cldr
%{default: :latn, native: :thai}
"""
@spec number_systems_for!(Cldr.Locale.locale_name() | LanguageTag.t(), Cldr.backend()) ::
map() | no_return()
def number_systems_for!(locale, backend) do
case number_systems_for(locale, backend) do
{:error, {exception, message}} ->
raise exception, message
{:ok, systems} ->
systems
end
end
@doc """
Returns the actual number system from a number system type.
## Arguments
* `locale` is any valid locale name returned by `Cldr.known_locale_names/0`
or a `Cldr.LanguageTag` struct returned by ``Cldr.Locale.new!/2``
* `system_name` is any number system name returned by
`Cldr.known_number_systems/0` or a number system type
returned by `Cldr.known_number_system_types/0`
* `backend` is any `Cldr` backend. That is, any module that
contains `use Cldr`
## Returns
* `{:ok, number_system_map}` or
* `{:error, {exception, reason}}`
## Notes
This function will decode a number system type into the actual
number system. If the number system provided can't be decoded
it is returned as is.
## Examples
iex> Cldr.Number.System.number_system_for "th", :latn, TestBackend.Cldr
{:ok, %{digits: "0123456789", type: :numeric}}
iex> Cldr.Number.System.number_system_for "en", :default, TestBackend.Cldr
{:ok, %{digits: "0123456789", type: :numeric}}
iex> Cldr.Number.System.number_system_for "he", :traditional, TestBackend.Cldr
{:ok, %{rules: "hebrew", type: :algorithmic}}
iex> Cldr.Number.System.number_system_for "en", :finance, TestBackend.Cldr
{
:error,
{Cldr.UnknownNumberSystemError,
"The number system :finance is unknown for the locale named \\"en\\". Valid number systems are %{default: :latn, native: :latn}"}
}
iex> Cldr.Number.System.number_system_for "en", :native, TestBackend.Cldr
{:ok, %{digits: "0123456789", type: :numeric}}
"""
@spec number_system_for(
Cldr.Locale.locale_name() | LanguageTag.t(),
Cldr.Number.System.system_name(),
Cldr.backend()
) ::
{:ok, map()} | {:error, {module(), String.t()}}
def number_system_for(locale, system_name, backend) do
with {:ok, locale} <- Cldr.validate_locale(locale, backend),
{:ok, system_name} <- system_name_from(system_name, locale, backend) do
{:ok, Map.get(number_systems(), system_name)}
else
{:error, reason} -> {:error, reason}
end
end
@doc """
Returns the names of the number systems available for
a locale or an `{:error, message}` tuple if the locale
is not known.
## Arguments
* `locale` is any locale returned by ``Cldr.Locale.new!/2`` or
a `Cldr.LanguageTag` struct
* `backend` is any `Cldr` backend. That is, any module that
contains `use Cldr`
## Examples
iex> Cldr.Number.System.number_system_names_for("en", TestBackend.Cldr)
{:ok, [:latn]}
iex> Cldr.Number.System.number_system_names_for("th", TestBackend.Cldr)
{:ok, [:latn, :thai]}
iex> Cldr.Number.System.number_system_names_for("he", TestBackend.Cldr)
{:ok, [:latn, :hebr]}
iex> Cldr.Number.System.number_system_names_for("zz", TestBackend.Cldr)
{:error, {Cldr.UnknownLocaleError, "The locale \\"zz\\" is not known."}}
"""
@spec number_system_names_for(Cldr.Locale.locale_name() | LanguageTag.t(), Cldr.backend()) ::
{:ok, list(atom())} | {:error, {module(), String.t()}}
def number_system_names_for(locale, backend) do
with {:ok, locale} <- Cldr.validate_locale(locale, backend),
{:ok, systems} <- number_systems_for(locale, backend) do
{:ok, systems |> Map.values() |> Enum.uniq()}
else
{:error, reason} -> {:error, reason}
end
end
@doc """
Returns the names of the number systems available for
a locale or an `{:error, message}` tuple if the locale
is not known.
## Arguments
* `locale` is any valid locale name returned by `Cldr.known_locale_names/0`
or a `Cldr.LanguageTag` struct returned by ``Cldr.Locale.new!/2``
* `backend` is any `Cldr` backend. That is, any module that
contains `use Cldr`
## Examples
iex> Cldr.Number.System.number_system_names_for!("en", TestBackend.Cldr)
[:latn]
iex> Cldr.Number.System.number_system_names_for!("th", TestBackend.Cldr)
[:latn, :thai]
iex> Cldr.Number.System.number_system_names_for!("he", TestBackend.Cldr)
[:latn, :hebr]
"""
@spec number_system_names_for!(Cldr.Locale.locale_name() | LanguageTag.t(), Cldr.backend()) ::
list(system_name()) | no_return()
def number_system_names_for!(locale, backend) do
case number_system_names_for(locale, backend) do
{:error, {exception, message}} ->
raise exception, message
{:ok, names} ->
names
end
end
@doc """
Returns a number system name for a given locale and number system reference.
## Arguments
* `system_name` is any number system name returned by
`Cldr.known_number_systems/0` or a number system type
returned by `Cldr.known_number_system_types/0`
* `locale` is any valid locale name returned by `Cldr.known_locale_names/0`
or a `Cldr.LanguageTag` struct returned by ``Cldr.Locale.new!/2``
* `backend` is any `Cldr` backend. That is, any module that
contains `use Cldr`
## Notes
Number systems can be references in one of two ways:
* As a number system type such as :default, :native, :traditional and
:finance. This allows references to a number system for a locale in a
consistent fashion for a given use
* WIth the number system name directly, such as :latn, :arab or any of the
other 70 or so
This function dereferences the supplied `system_name` and returns the
actual system name.
## Examples
ex> Cldr.Number.System.system_name_from(:default, "en", TestBackend.Cldr)
{:ok, :latn}
iex> Cldr.Number.System.system_name_from("latn", "en", TestBackend.Cldr)
{:ok, :latn}
iex> Cldr.Number.System.system_name_from(:native, "en", TestBackend.Cldr)
{:ok, :latn}
iex> Cldr.Number.System.system_name_from(:nope, "en", TestBackend.Cldr)
{
:error,
{Cldr.UnknownNumberSystemError, "The number system :nope is unknown"}
}
Note that return value is not guaranteed to be a valid
number system for the given locale as demonstrated in the third example.
"""
@spec system_name_from(system_name, Locale.locale_name() | LanguageTag.t(), Cldr.backend()) ::
{:ok, atom()} | {:error, {module(), String.t()}}
def system_name_from(system_name, locale, backend) do
with {:ok, locale} <- Cldr.validate_locale(locale, backend),
{:ok, number_system} <- validate_number_system_or_type(system_name, backend),
{:ok, number_systems} <- number_systems_for(locale, backend) do
cond do
Map.has_key?(number_systems, number_system) ->
{:ok, Map.get(number_systems, number_system)}
number_system in Map.values(number_systems) ->
{:ok, number_system}
true ->
{:error, unknown_number_system_for_locale_error(system_name, locale, number_systems)}
end
else
{:error, reason} -> {:error, reason}
end
end
@doc """
Returns a number system name for a given locale and number system reference
and raises if the number system is not available for the given locale.
## Arguments
* `system_name` is any number system name returned by
`Cldr.known_number_systems/0` or a number system type
returned by `Cldr.known_number_system_types/0`
* `locale` is any valid locale name returned by `Cldr.known_locale_names/0`
or a `Cldr.LanguageTag` struct returned by ``Cldr.Locale.new!/2``
* `backend` is any `Cldr` backend. That is, any module that
contains `use Cldr`
## Examples
iex> Cldr.Number.System.system_name_from!(:default, "en", TestBackend.Cldr)
:latn
iex> Cldr.Number.System.system_name_from!("latn", "en", TestBackend.Cldr)
:latn
iex> Cldr.Number.System.system_name_from!(:traditional, "he", TestBackend.Cldr)
:hebr
"""
@spec system_name_from!(system_name, Locale.locale_name() | LanguageTag.t(), Cldr.backend()) ::
atom() | no_return()
def system_name_from!(system_name, locale, backend) do
case system_name_from(system_name, locale, backend) do
{:error, {exception, message}} ->
raise exception, message
{:ok, name} ->
name
end
end
@doc """
Returns locale and number systems that have the same digits and
separators as the supplied one.
## Arguments
* `locale` is any valid locale name returned by `Cldr.known_locale_names/0`
or a `Cldr.LanguageTag` struct returned by ``Cldr.Locale.new!/2``
* `system_name` is any number system name returned by
`Cldr.known_number_systems/0` or a number system type
returned by `Cldr.known_number_system_types/0`
* `backend` is any `Cldr` backend. That is, any module that
contains `use Cldr`
## Returns
## Notes
Transliterating between locale & number systems is expensive. To avoid
unncessary transliteration we look for locale and number systems that have
the same digits and separators. Typically we are comparing to locale "en"
and number system "latn" since this is what the number formatting routines use
as placeholders.
## Examples
"""
@spec number_systems_like(LanguageTag.t() | Locale.locale_name(), system_name, Cldr.backend()) ::
{:ok, list()} | {:error, {module(), String.t()}}
def number_systems_like(locale, number_system, backend) do
with {:ok, _} <- Cldr.validate_locale(locale, backend),
{:ok, %{digits: digits}} <- number_system_for(locale, number_system, backend),
{:ok, symbols} <- Symbol.number_symbols_for(locale, number_system, backend),
{:ok, names} <- number_system_names_for(locale, backend) do
likes = do_number_systems_like(digits, symbols, names, backend)
{:ok, likes}
end
end
defp do_number_systems_like(digits, symbols, names, backend) do
Enum.map(Cldr.known_locale_names(backend), fn this_locale ->
Enum.reduce(names, [], fn this_system, acc ->
locale = Locale.new!(this_locale, backend)
case number_system_for(locale, this_system, backend) do
{:error, _} ->
acc
{:ok, %{digits: these_digits}} ->
{:ok, these_symbols} = Symbol.number_symbols_for(locale, this_system, backend)
if digits == these_digits && symbols == these_symbols do
acc ++ {locale, this_system}
end
end
end)
end)
|> Enum.reject(&(is_nil(&1) || &1 == []))
end
@doc """
Returns `{:ok, digits}` for a number system, or an `{:error, message}` if the
number system is not known.
## Arguments
* `system_name` is any number system name returned by
`Cldr.known_number_systems/0` or a number system type
returned by `Cldr.known_number_system_types/0`
## Returns
* `{:ok, string_of_digits}` or
* `{:error, {exception, reason}}`
## Examples
iex> Cldr.Number.System.number_system_digits(:latn)
{:ok, "0123456789"}
iex> Cldr.Number.System.number_system_digits(:nope)
{:error, {Cldr.UnknownNumberSystemError, "The number system :nope is not known or does not have digits"}}
"""
@spec number_system_digits(system_name()) ::
{:ok, String.t()} | {:error, {module(), String.t()}}
def number_system_digits(system_name) do
if system = Map.get(systems_with_digits(), system_name) do
{:ok, Map.get(system, :digits)}
else
{:error, number_system_digits_error(system_name)}
end
end
@doc """
Returns `digits` for a number system, or raises an exception if the
number system is not know.
## Arguments
* `system_name` is any number system name returned by
`Cldr.known_number_systems/0` or a number system type
returned by `Cldr.known_number_system_types/0`
## Returns
* A string of the number systems digits or
* raises an exception
## Examples
iex> Cldr.Number.System.number_system_digits! :latn
"0123456789"
Cldr.Number.System.number_system_digits! :nope
** (Cldr.UnknownNumberSystemError) The number system :nope is not known or does not have digits
"""
@spec number_system_digits!(system_name) :: String.t() | no_return()
def number_system_digits!(system_name) do
case number_system_digits(system_name) do
{:ok, digits} ->
digits
{:error, {exception, message}} ->
raise exception, message
end
end
@doc """
Converts a number into the representation of
a non-latin number system.
This function converts numbers to a known
number system only, it does not provide number
formatting.
## Arguments
* `number` is a `float`, `integer` or `Decimal`
* `system_name` is any number system name returned by
`Cldr.known_number_systems/0` or a number system type
returned by `Cldr.known_number_system_types/0`
* `backend` is any `Cldr` backend. That is, any module that
contains `use Cldr`
## Returns
* `{:ok, string_of_digits}` or
* `{:error, {exception, reason}}`
## Notes
There are two types of number systems in CLDR:
* `:numeric` in which the number system defines
a direct mapping between the latin digits `0..9`
into a the number system equivalent. In this case,
` to_system/3` invokes `Cldr.Number.Transliterate.transliterate_digits/3`
for the given number.
* `:algorithmic` in which the number system
does not have the same structure as the `:latn`
number system and therefore the conversion is
done algorithmically. For CLDR the algorithm
is implemented through `Cldr.Rbnf` rulesets.
These rulesets are considered by CLDR to be
less rigorous than the `:numeric` number systems
and caution and testing for a specific use case
is recommended.
## Examples
iex> Cldr.Number.System.to_system 123456, :hebr, TestBackend.Cldr
{:ok, "ק׳׳ת׳"}
iex> Cldr.Number.System.to_system 123, :hans, TestBackend.Cldr
{:ok, "一百二十三"}
iex> Cldr.Number.System.to_system 123, :hant, TestBackend.Cldr
{:ok, "一百二十三"}
iex> Cldr.Number.System.to_system 123, :hansfin, TestBackend.Cldr
{:ok, "壹佰贰拾叁"}
"""
@spec to_system(Math.number_or_decimal(), atom, Cldr.backend()) ::
{:ok, binary()} | {:error, {module(), String.t()}}
def to_system(number, system_name, backend) do
Module.concat(backend, Number.System).to_system(number, system_name)
end
@doc """
Converts a number into the representation of
a non-latin number system. Returns a converted
string or raises on error.
## Arguments
* `number` is a `float`, `integer` or `Decimal`
* `system_name` is any number system name returned by
`Cldr.known_number_systems/0` or a number system type
returned by `Cldr.known_number_system_types/0`
* `backend` is any `Cldr` backend. That is, any module that
contains `use Cldr`
## Returns
* `string_of_digits` or
* raises an exception
See `Cldr.Number.System.to_system/3` for further
information.
## Examples
iex> Cldr.Number.System.to_system! 123, :hans, TestBackend.Cldr
"一百二十三"
iex> Cldr.Number.System.to_system! 123, :hant, TestBackend.Cldr
"一百二十三"
iex> Cldr.Number.System.to_system! 123, :hansfin, TestBackend.Cldr
"壹佰贰拾叁"
"""
@spec to_system!(Math.number_or_decimal(), atom, Cldr.backend()) ::
binary() | no_return()
def to_system!(number, system_name, backend) do
case to_system(number, system_name, backend) do
{:ok, string} -> string
{:error, {exception, reason}} -> raise exception, reason
end
end
@doc """
Generate a transliteration map between two character classes
## Arguments
* `from` is any `String.t()` intended to represent the
digits of a number system but thats not a requirement.
* `to` is any `String.t()` that is the same length as `from`
intended to represent the digits of a number system.
## Returns
* A map where the keys are the graphemes in `from` and the
values are the graphemes in `to` or
* `{:error, {exception, reason}}`
## Examples
iex> Cldr.Number.System.generate_transliteration_map "0123456789", "9876543210"
%{
"0" => "9",
"1" => "8",
"2" => "7",
"3" => "6",
"4" => "5",
"5" => "4",
"6" => "3",
"7" => "2",
"8" => "1",
"9" => "0"
}
iex> Cldr.Number.System.generate_transliteration_map "0123456789", "987654321"
{:error,
{ArgumentError, "\\"0123456789\\" and \\"987654321\\" aren't the same length"}}
"""
def generate_transliteration_map(from, to) when is_binary(from) and is_binary(to) do
do_generate_transliteration_map(from, to, String.length(from), String.length(to))
end
defp do_generate_transliteration_map(from, to, from_length, to_length)
when from_length == to_length do
from
|> String.graphemes()
|> Enum.zip(String.graphemes(to))
|> Enum.into(%{})
end
defp do_generate_transliteration_map(from, to, _from_length, _to_length) do
{:error, {ArgumentError, "#{inspect(from)} and #{inspect(to)} aren't the same length"}}
end
defp validate_number_system_or_type(number_system, backend) do
with {:ok, number_system} <- Cldr.validate_number_system(number_system) do
{:ok, number_system}
else
{:error, _} ->
with {:ok, number_system} <- Cldr.validate_number_system_type(number_system, backend) do
{:ok, number_system}
else
{:error, _reason} -> {:error, Cldr.unknown_number_system_error(number_system)}
end
end
end
@doc """
Returns an error tuple for an number system unknown to a given locale.
## Arguements
* `number_system` is any number system name **not** returned by `Cldr.known_number_systems/0`
* `locale` is any valid locale name returned by `Cldr.known_locale_names/0`
or a `Cldr.LanguageTag` struct returned by ``Cldr.Locale.new!/2``
* `valid_number_systems` is a map returned by `Cldr.Number.System.number_systems_for/2`
"""
def unknown_number_system_for_locale_error(number_system, locale, valid_number_systems) do
{
Cldr.UnknownNumberSystemError,
"The number system #{inspect(number_system)} is unknown " <>
"for the locale named #{Cldr.locale_name(locale)}. " <>
"Valid number systems are #{inspect(valid_number_systems)}"
}
end
defp number_system_digits_error(system_name) do
{
Cldr.UnknownNumberSystemError,
"The number system #{inspect(system_name)} is not known or does not have digits"
}
end
end