Matan Lurey d89f54dd65 Replace json_utils with a modern extension type, add tests. (flutter/engine#52769) ...

I started on a refactoring of
https://github.com/flutter/flutter/issues/147666, and was frustrated
with the JSON decoding of `gn desc --format=json`, so I used a similar
pattern from my micro-json library (https://pub.dev/packages/jsonut) and
encapsulated it as an extension type.

My favorite is the `JsonObject.map` function which replaces:

```dart
/// Construct a RunTarget from a JSON map.
factory RunTarget.fromJson(Map<String, Object> map) {
  final List<String> errors = <String>[];
  final String name = stringOfJson(map, _nameKey, errors)!;
  final String id = stringOfJson(map, _idKey, errors)!;
  final String targetPlatform =
      stringOfJson(map, _targetPlatformKey, errors)!;

  if (errors.isNotEmpty) {
    throw FormatException('Failed to parse RunTarget: ${errors.join('\n')}');
  }
  return RunTarget._(name, id, targetPlatform);
}
```

... with:

```dart
/// Construct a RunTarget from a JSON map.
factory RunTarget.fromJson(Map<String, Object> map) {
  return JsonObject(map).map((JsonObject json) => RunTarget._(
    json.string(_nameKey),
    json.string(_idKey),
    json.string(_targetPlatformKey),
  ));
}
```

2024-05-13 20:03:43 -07:00

..

src/flutter

Replace json_utils with a modern extension type, add tests. (flutter/engine#52769)

2024-05-13 20:03:43 -07:00