instanceValidateConstraints method

@override void instanceValidateConstraints(ValidateContext context, int value)

Validates that the argument matches constraints (minimum length, etc.).

Example

import 'package:kind/kind.dart';

void main() {
  final kind = const StringKind();

  final context = ValidateContext();
  context.instanceValidate('abc', kind: kind);
  // The above calls kind.instanceValidateConstraints(...)
}

Implementation

@override
void instanceValidateConstraints(ValidateContext context, int value) {
  if (value < minPossible || value > maxPossible) {
    context.invalid(
      value: value,
      message: 'Not an unsigned 8-bit integer.',
    );
  }
  super.instanceValidateConstraints(context, value);
}