Method provider

java/dagger/internal/DoubleCheck.java:70–78

(P delegate)

  // This method is declared this way instead of "<T> Provider<T> provider(Provider<T> delegate)"
  // to work around an Eclipse type inference bug: https://github.com/google/dagger/issues/949.
  public static <P extends Provider<T>, T> Provider<T> provider(P delegate) {
    checkNotNull(delegate);
    if (delegate instanceof DoubleCheck) {
      /* This should be a rare case, but if we have a scoped @Binds that delegates to a scoped
       * binding, we shouldn't cache the value again. */
      return delegate;
    }
    return new DoubleCheck<T>(delegate);
  }

  /** Returns a {@link Lazy} that caches the value from the given provider. */
  // This method is declared this way instead of "<T> Lazy<T> lazy(Provider<T> delegate)"