assertIsRealType function

@visibleForTesting void assertIsRealType(Type value)

Asserts that the given type is not a token reference type.

Used in testing to ensure proper type usage in generics.

Implementation

@visibleForTesting
void assertIsRealType(Type value) {
  // Only check if the value is a TokenRef type that should be replaced
  final Type? realType = switch (value) {
    // Color types
    == ColorRef => Color,

    // Border types
    == BorderSideRef => BorderSide,
    == BoxBorderRef => BoxBorder,
    == BorderRadiusRef => BorderRadius,
    == BorderRadiusDirectionalRef => BorderRadiusDirectional,
    == BorderRadiusGeometryRef => BorderRadiusGeometry,

    // Gradient types
    == GradientRef => Gradient,
    == LinearGradientRef => LinearGradient,
    == RadialGradientRef => RadialGradient,
    == SweepGradientRef => SweepGradient,
    == GradientTransformRef => GradientTransform,

    // Geometry types
    == AlignmentGeometryRef => AlignmentGeometry,
    == AlignmentRef => Alignment,
    == AlignmentDirectionalRef => AlignmentDirectional,
    == EdgeInsetsGeometryRef => EdgeInsetsGeometry,
    == EdgeInsetsRef => EdgeInsets,
    == EdgeInsetsDirectionalRef => EdgeInsetsDirectional,

    // Shape and decoration types
    == RadiusRef => Radius,
    == OffsetRef => Offset,
    == RectRef => Rect,
    == ShadowRef => Shadow,
    == BoxShadowRef => BoxShadow,
    == BoxDecorationRef => BoxDecoration,
    == DecorationImageRef => DecorationImage,
    == ShapeBorderRef => ShapeBorder,
    == BoxConstraintsRef => BoxConstraints,

    // Text types
    == TextStyleRef => TextStyle,
    == StrutStyleRef => StrutStyle,
    == TextHeightBehaviorRef => TextHeightBehavior,
    == TextScalerRef => TextScaler,
    == FontFeatureRef => FontFeature,
    == FontWeightRef => FontWeight,

    // Other types
    == LocaleRef => Locale,
    == ImageProviderRef => ImageProvider,
    == Matrix4Ref => Matrix4,
    == TableColumnWidthRef => TableColumnWidth,
    == TableBorderRef => TableBorder,
    == DurationRef => Duration,
    == CurveRef => Curve,

    // All other types are valid - not TokenRef types
    _ => null,
  };

  assert(
    realType == null,
    'Cannot use $value for generic, use $realType instead.',
  );
}