[tool_crash] _CastError: (#0 LocalizationsGenerator._generateMethod.generateHelperMethods (package:flutter_tools/src/localizations/gen_l10n.dart:1214:54))

[rares45]

Command

flutter gen-l10n --verbose

Steps to Reproduce

1. Upgrade flutter from stable to beta
2. Run flutter gen-l10n --verbose

Logs

_CastError: (#0 LocalizationsGenerator._generateMethod.generateHelperMethods (package:flutter_tools/src/localizations/gen_l10n.dart:1214:54))

#0      LocalizationsGenerator._generateMethod.generateHelperMethods (package:flutter_tools/src/localizations/gen_l10n.dart:1214:54)
#1      LocalizationsGenerator._generateMethod.generateHelperMethods.<anonymous closure> (package:flutter_tools/src/localizations/gen_l10n.dart:1116:41)
#2      MappedListIterable.elementAt (dart:_internal/iterable.dart:414:31)
#3      ListIterator.moveNext (dart:_internal/iterable.dart:343:26)
#4      new _GrowableList._ofEfficientLengthIterable (dart:core-patch/growable_array.dart:189:27)
#5      new _GrowableList.of (dart:core-patch/growable_array.dart:150:28)
#6      new List.of (dart:core-patch/array_patch.dart:52:28)
#7      ListIterable.toList (dart:_internal/iterable.dart:214:7)
#8      LocalizationsGenerator._generateMethod.generateHelperMethods (package:flutter_tools/src/localizations/gen_l10n.dart:1119:14)
#9      LocalizationsGenerator._generateMethod (package:flutter_tools/src/localizations/gen_l10n.dart:1280:5)
#10     LocalizationsGenerator._generateBaseClassFile.<anonymous closure> (package:flutter_tools/src/localizations/gen_l10n.dart:905:14)
#11     MappedIterator.moveNext (dart:_internal/iterable.dart:392:20)
#12     Iterable.join (dart:core/iterable.dart:431:23)
#13     LocalizationsGenerator._generateBaseClassFile (package:flutter_tools/src/localizations/gen_l10n.dart:919:41)
#14     LocalizationsGenerator._generateCode (package:flutter_tools/src/localizations/gen_l10n.dart:1015:46)
#15     LocalizationsGenerator.writeOutputFiles (package:flutter_tools/src/localizations/gen_l10n.dart:1286:47)
#16     generateLocalizations (package:flutter_tools/src/localizations/gen_l10n.dart:71:9)
#17     GenerateLocalizationsCommand.runCommand (package:flutter_tools/src/commands/generate_localizations.dart:228:24)
#18     FlutterCommand.verifyThenRunCommand (package:flutter_tools/src/runner/flutter_command.dart:1423:12)
<asynchronous suspension>
#19     FlutterCommand.run.<anonymous closure> (package:flutter_tools/src/runner/flutter_command.dart:1257:27)
<asynchronous suspension>
#20     AppContext.run.<anonymous closure> (package:flutter_tools/src/base/context.dart:150:19)
<asynchronous suspension>
#21     CommandRunner.runCommand (package:args/command_runner.dart:209:13)

[✓] Flutter (Channel beta, 3.6.0-0.1.pre, on Ubuntu 22.10 5.19.0-26-generic, locale en_GB.UTF-8)
    • Flutter version 3.6.0-0.1.pre on channel beta at /home/rares/.apps/flutter
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    • Framework revision 75927305ff (2 weeks ago), 2022-11-17 05:52:50 +0530
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Flutter Application Metadata

Type: app
Version: 0.0.1+1
Material: true
Android X: false
Module: false
Plugin: false
Android package: null
iOS bundle identifier: null
Creation channel: beta
Creation framework version: d6260f1

Plugins

dynamic_color-1.5.4
flutter_native_splash-2.2.16
mobile_scanner-2.1.0
package_info_plus-3.0.2

[rares45]

Here is my l10n.yaml:

arb-dir: lib/l10n
template-arb-file: lw_en.arb
output-localization-file: lw_localizations.dart
output-class: LWLocalizations
nullable-getter: false

[darshankawar]

I am unable to replicate the issue based on details provided. Keeping it open and labeling for team's attention.

[darshankawar]

/cc @christopherfujino

[rares45]

After some debugging it seems removing these lines from my arb is fixing the crash:

"profileType": "{level, plural, =0{Novice} =1{Not bad} =2{TODO} =3{Gamer} other{True gamer}}",
"@profileType": {
  "placeholders": {
    "level": {
      "description": "The level. Starts from 0",
      "format": "decimalPattern",
      "type": "num"
    }
  }
},

[christopherfujino]

@thkim1011 it seems like this no longer affects the master channel with the new parser, is that correct?

[thkim1011]

I think this may be a bug. Technically, the =3 or three case is not valid syntax, but I forgot to handle this case. I'll make a PR with a fix.

[thkim1011]

@rares45 you might want to consider using a select case instead as follows:

"profileType": "{level, select, level0{Novice} level1{Not bad} level2{TODO} level3{Gamer} other{True gamer}}",
"@profileType": {
  "placeholders": {
    "level": {
      "description": "The level. Starts from 0",
      "format": "decimalPattern",
      "type": "String"
    }
  }
},

and use the string with LWLocalizations.of(context).profileType('level$level').

Currently, it will throw a syntax error if numbers are used for select cases instead of alphanumeric strings, but I'm working on a fix for this as well.

[github-actions]

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.