operator == method

@override bool operator ==(Object other)

Equality comparison based on service type, lifetime, implementation type/instance/factory, and service key.

This matches .NET's ServiceDescriptor.Equals behavior where two descriptors are equal if they describe the same service registration.

Implementation

@override
bool operator ==(Object other) {
  if (identical(this, other)) {
    return true;
  }

  if (other is! ServiceDescriptor) {
    return false;
  }

  // Service type and lifetime must match
  if (serviceType != other.serviceType || lifetime != other.lifetime) {
    return false;
  }

  // Service key must match (including null == null)
  if (serviceKey != other.serviceKey) {
    return false;
  }

  // For instance-based descriptors, compare instances
  if (_implementationInstance != null ||
      other._implementationInstance != null) {
    return identical(
      _implementationInstance,
      other._implementationInstance,
    );
  }

  // For factory-based descriptors, compare factories by identity
  if (_implementationFactory != null ||
      other._implementationFactory != null) {
    return identical(
      _implementationFactory,
      other._implementationFactory,
    );
  }

  // Both are null
  return true;
}