import org.checkerframework.checker.nullness.qual.Nullable;

@SuppressWarnings("initialization.field.uninitialized")
public class ScopingConstruct {

  // TODO: add nested classes within these two?
  static class StaticNested implements AutoCloseable {
    public void close() {}

    static class NestedNested implements AutoCloseable {
      public void close() {}
    }

    class NestedInner implements AutoCloseable {
      public void close() {}
    }
  }

  class Inner implements AutoCloseable {
    public void close() {}

    // This is a Java error.
    // static class InnerNested {}

    class InnerInner implements AutoCloseable {
      public void close() {}
    }
  }

  StaticNested sn;

  @Nullable StaticNested nsn;

  Inner i;

  @Nullable Inner ni;

  ScopingConstruct.StaticNested scsn;

  // This is a Java error.
  // @Nullable ScopingConstruct.StaticNested nscsn;

  ScopingConstruct.@Nullable StaticNested scnsn;

  // This is a Java error.
  // ScopingConstruct.@Nullable StaticNested.NestedNested scnsnnn;

  // This is a Java error.
  // ScopingConstruct.@Nullable StaticNested.@Nullable NestedNested scnsnnnn;

  // :: error: (nullness.on.outer)
  ScopingConstruct.@Nullable StaticNested.NestedInner scnsnni;

  // :: error: (nullness.on.outer)
  ScopingConstruct.@Nullable StaticNested.@Nullable NestedInner scnsnnni;

  ScopingConstruct.Inner sci;

  ScopingConstruct.Inner.InnerInner sciii;

  ScopingConstruct.Inner.@Nullable InnerInner scinii;

  // :: error: (nullness.on.outer)
  @Nullable ScopingConstruct.Inner nsci;

  // :: error: (nullness.on.outer)
  @Nullable ScopingConstruct.Inner.InnerInner nsciii;

  // :: error: (nullness.on.outer)
  @Nullable ScopingConstruct.Inner.@Nullable InnerInner nscinii;

  ScopingConstruct.@Nullable Inner scni;

  // :: error: (nullness.on.outer)
  ScopingConstruct.@Nullable Inner.InnerInner scniii;

  // :: error: (nullness.on.outer)
  ScopingConstruct.@Nullable Inner.@Nullable InnerInner scninii;

  ScopingConstruct.StaticNested.NestedInner scsnni;

  ScopingConstruct.StaticNested.@Nullable NestedInner scsnnni;

  // This is a Java error.
  // @Nullable ScopingConstruct.StaticNested.NestedInner nscsnni;

  // This is a Java error.
  // @Nullable ScopingConstruct.StaticNested.@Nullable NestedInner nscsnnni;

  // This is a Java error.
  // @Nullable ScopingConstruct.@Nullable StaticNested.NestedInner nscnsnni;

  // This is a Java error.
  // @Nullable ScopingConstruct.@Nullable StaticNested.@Nullable NestedInner nscnsnnni;

  ScopingConstruct.Inner @Nullable [] scina;

  ScopingConstruct.Inner.InnerInner @Nullable [] sciiina;

  ScopingConstruct.Inner.@Nullable InnerInner @Nullable [] sciniina;

  // :: error: (nullness.on.outer)
  @Nullable ScopingConstruct.Inner @Nullable [] nscina;

  // :: error: (nullness.on.outer)
  @Nullable ScopingConstruct.Inner.InnerInner @Nullable [] nsciiina;

  // :: error: (nullness.on.outer)
  @Nullable ScopingConstruct.Inner.@Nullable InnerInner @Nullable [] nsciniina;

  ScopingConstruct.@Nullable Inner @Nullable [] scnina;

  // :: error: (nullness.on.outer)
  ScopingConstruct.@Nullable Inner.InnerInner @Nullable [] scniina;

  // :: error: (nullness.on.outer)
  ScopingConstruct.@Nullable Inner.@Nullable InnerInner @Nullable [] scniniina;

  ScopingConstruct.Inner sci() {
    throw new Error("not implemented");
  }

  ScopingConstruct.Inner.InnerInner sciii() {
    throw new Error("not implemented");
  }

  ScopingConstruct.Inner.@Nullable InnerInner scinii() {
    throw new Error("not implemented");
  }

  // :: error: (nullness.on.outer)
  @Nullable ScopingConstruct.Inner nsci() {
    throw new Error("not implemented");
  }

  // :: error: (nullness.on.outer)
  @Nullable ScopingConstruct.Inner.InnerInner nsciii() {
    throw new Error("not implemented");
  }

  // :: error: (nullness.on.outer)
  @Nullable ScopingConstruct.Inner.@Nullable InnerInner nscinii() {
    throw new Error("not implemented");
  }

  ScopingConstruct.@Nullable Inner scni() {
    throw new Error("not implemented");
  }

  // :: error: (nullness.on.outer)
  ScopingConstruct.@Nullable Inner.InnerInner scniii() {
    throw new Error("not implemented");
  }

  // :: error: (nullness.on.outer)
  ScopingConstruct.@Nullable Inner.@Nullable InnerInner scninii() {
    throw new Error("not implemented");
  }

  ScopingConstruct.Inner @Nullable [] scin() {
    throw new Error("not implemented");
  }

  ScopingConstruct.Inner.InnerInner @Nullable [] sciiin() {
    throw new Error("not implemented");
  }

  ScopingConstruct.Inner.@Nullable InnerInner @Nullable [] sciniin() {
    throw new Error("not implemented");
  }

  // :: error: (nullness.on.outer)
  @Nullable ScopingConstruct.Inner @Nullable [] nscin() {
    throw new Error("not implemented");
  }

  // :: error: (nullness.on.outer)
  @Nullable ScopingConstruct.Inner.InnerInner @Nullable [] nsciiin() {
    throw new Error("not implemented");
  }

  // :: error: (nullness.on.outer)
  @Nullable ScopingConstruct.Inner.@Nullable InnerInner @Nullable [] nsciniin() {
    throw new Error("not implemented");
  }

  ScopingConstruct.@Nullable Inner @Nullable [] scnin() {
    throw new Error("not implemented");
  }

  // :: error: (nullness.on.outer)
  ScopingConstruct.@Nullable Inner.InnerInner @Nullable [] scniiin() {
    throw new Error("not implemented");
  }

  // :: error: (nullness.on.outer)
  ScopingConstruct.@Nullable Inner.@Nullable InnerInner @Nullable [] scniniin() {
    throw new Error("not implemented");
  }

  ///
  /// Formal parameters
  ///

  void fsn(StaticNested sn) {}

  void fnsn(@Nullable StaticNested nsn) {}

  void fi(Inner i) {}

  void fni(@Nullable Inner ni) {}

  void fscsn(ScopingConstruct.StaticNested scsn) {}

  void fscnsn(ScopingConstruct.@Nullable StaticNested scnsn) {}

  // :: error: (nullness.on.outer)
  void fscnsnni(ScopingConstruct.@Nullable StaticNested.NestedInner scnsnni) {}

  // :: error: (nullness.on.outer)
  void fscnsnnni(ScopingConstruct.@Nullable StaticNested.@Nullable NestedInner scnsnnni) {}

  void fsci(ScopingConstruct.Inner sci) {}

  void fsciii(ScopingConstruct.Inner.InnerInner sciii) {}

  void fscinii(ScopingConstruct.Inner.@Nullable InnerInner scinii) {}

  // :: error: (nullness.on.outer)
  void fnsci(@Nullable ScopingConstruct.Inner nsci) {}

  // :: error: (nullness.on.outer)
  void fnsciii(@Nullable ScopingConstruct.Inner.InnerInner nsciii) {}

  // :: error: (nullness.on.outer)
  void fnscinii(@Nullable ScopingConstruct.Inner.@Nullable InnerInner nscinii) {}

  void fscni(ScopingConstruct.@Nullable Inner scni) {}

  // :: error: (nullness.on.outer)
  void fscniii(ScopingConstruct.@Nullable Inner.InnerInner scniii) {}

  // :: error: (nullness.on.outer)
  void fscninii(ScopingConstruct.@Nullable Inner.@Nullable InnerInner scninii) {}

  void fscsnni(ScopingConstruct.StaticNested.NestedInner scsnni) {}

  void fscsnnni(ScopingConstruct.StaticNested.@Nullable NestedInner scsnnni) {}

  ///
  /// Local variables
  ///

  void lvsn() {
    StaticNested sn;
  }

  void lvnsn() {
    @Nullable StaticNested nsn;
  }

  void lvi() {
    Inner i;
  }

  void lvni() {
    @Nullable Inner ni;
  }

  void lvscsn() {
    ScopingConstruct.StaticNested scsn;
  }

  void lvscnsn() {
    ScopingConstruct.@Nullable StaticNested scnsn;
  }

  void lvscnsnni() {
    // :: error: (nullness.on.outer)
    ScopingConstruct.@Nullable StaticNested.NestedInner scnsnni;
  }

  void lvscnsnnni() {
    // :: error: (nullness.on.outer)
    ScopingConstruct.@Nullable StaticNested.@Nullable NestedInner scnsnnni;
  }

  void lvsci() {
    ScopingConstruct.Inner sci;
  }

  void lvsciii() {
    ScopingConstruct.Inner.InnerInner sciii;
  }

  void lvscinii() {
    ScopingConstruct.Inner.@Nullable InnerInner scinii;
  }

  void lvnsci() {
    // :: error: (nullness.on.outer)
    @Nullable ScopingConstruct.Inner nsci;
  }

  void lvnsciii() {
    // :: error: (nullness.on.outer)
    @Nullable ScopingConstruct.Inner.InnerInner nsciii;
  }

  void lvnscinii() {
    // :: error: (nullness.on.outer)
    @Nullable ScopingConstruct.Inner.@Nullable InnerInner nscinii;
  }

  void lvscni() {
    ScopingConstruct.@Nullable Inner scni;
  }

  void lvscniii() {
    // :: error: (nullness.on.outer)
    ScopingConstruct.@Nullable Inner.InnerInner scniii;
  }

  void lvscninii() {
    // :: error: (nullness.on.outer)
    ScopingConstruct.@Nullable Inner.@Nullable InnerInner scninii;
  }

  void lvscsnni() {
    ScopingConstruct.StaticNested.NestedInner scsnni;
  }

  void lvscsnnni() {
    ScopingConstruct.StaticNested.@Nullable NestedInner scsnnni;
  }

  ///
  /// Resource variables
  ///

  void rvsn() {
    try (StaticNested sn = null) {}
  }

  void rvnsn() {
    try (@Nullable StaticNested nsn = null) {}
  }

  void rvi() {
    try (Inner i = null) {}
  }

  void rvni() {
    try (@Nullable Inner ni = null) {}
  }

  void rvscsn() {
    try (ScopingConstruct.StaticNested scsn = null) {}
  }

  void rvscnsn() {
    try (ScopingConstruct.@Nullable StaticNested scnsn = null) {}
  }

  void rvscnsnni() {
    // :: error: (nullness.on.outer)
    try (ScopingConstruct.@Nullable StaticNested.NestedInner scnsnni = null) {}
  }

  void rvscnsnnni() {
    // :: error: (nullness.on.outer)
    try (ScopingConstruct.@Nullable StaticNested.@Nullable NestedInner scnsnnni = null) {}
  }

  void rvsci() {
    try (ScopingConstruct.Inner sci = null) {}
  }

  void rvsciii() {
    try (ScopingConstruct.Inner.InnerInner sciii = null) {}
  }

  void rvscinii() {
    try (ScopingConstruct.Inner.@Nullable InnerInner scinii = null) {}
  }

  void rvnsci() {
    // :: error: (nullness.on.outer)
    try (@Nullable ScopingConstruct.Inner nsci = null) {}
  }

  void rvnsciii() {
    // :: error: (nullness.on.outer)
    try (@Nullable ScopingConstruct.Inner.InnerInner nsciii = null) {}
  }

  void rvnscinii() {
    // :: error: (nullness.on.outer)
    try (@Nullable ScopingConstruct.Inner.@Nullable InnerInner nscinii = null) {}
  }

  void rvscni() {
    try (ScopingConstruct.@Nullable Inner scni = null) {}
  }

  void rvscniii() {
    // :: error: (nullness.on.outer)
    try (ScopingConstruct.@Nullable Inner.InnerInner scniii = null) {}
  }

  void rvscninii() {
    // :: error: (nullness.on.outer)
    try (ScopingConstruct.@Nullable Inner.@Nullable InnerInner scninii = null) {}
  }

  void rvscsnni() {
    try (ScopingConstruct.StaticNested.NestedInner scsnni = null) {}
  }

  void rvscsnnni() {
    try (ScopingConstruct.StaticNested.@Nullable NestedInner scsnnni = null) {}
  }

  ///
  /// For variables
  ///

  void fvsn() {
    for (StaticNested sn = null; ; ) {}
  }

  void fvnsn() {
    for (@Nullable StaticNested nsn = null; ; ) {}
  }

  void fvi() {
    for (Inner i = null; ; ) {}
  }

  void fvni() {
    for (@Nullable Inner ni = null; ; ) {}
  }

  void fvscsn() {
    for (ScopingConstruct.StaticNested scsn = null; ; ) {}
  }

  void fvscnsn() {
    for (ScopingConstruct.@Nullable StaticNested scnsn = null; ; ) {}
  }

  void fvscnsnni() {
    // :: error: (nullness.on.outer)
    for (ScopingConstruct.@Nullable StaticNested.NestedInner scnsnni = null; ; ) {}
  }

  void fvscnsnnni() {
    // :: error: (nullness.on.outer)
    for (ScopingConstruct.@Nullable StaticNested.@Nullable NestedInner scnsnnni = null; ; ) {}
  }

  void fvsci() {
    for (ScopingConstruct.Inner sci = null; ; ) {}
  }

  void fvsciii() {
    for (ScopingConstruct.Inner.InnerInner sciii = null; ; ) {}
  }

  void fvscinii() {
    for (ScopingConstruct.Inner.@Nullable InnerInner scinii = null; ; ) {}
  }

  void fvnsci() {
    // :: error: (nullness.on.outer)
    for (@Nullable ScopingConstruct.Inner nsci = null; ; ) {}
  }

  void fvnsciii() {
    // :: error: (nullness.on.outer)
    for (@Nullable ScopingConstruct.Inner.InnerInner nsciii = null; ; ) {}
  }

  void fvnscinii() {
    // :: error: (nullness.on.outer)
    for (@Nullable ScopingConstruct.Inner.@Nullable InnerInner nscinii = null; ; ) {}
  }

  void fvscni() {
    for (ScopingConstruct.@Nullable Inner scni = null; ; ) {}
  }

  void fvscniii() {
    // :: error: (nullness.on.outer)
    for (ScopingConstruct.@Nullable Inner.InnerInner scniii = null; ; ) {}
  }

  void fvscninii() {
    // :: error: (nullness.on.outer)
    for (ScopingConstruct.@Nullable Inner.@Nullable InnerInner scninii = null; ; ) {}
  }

  void fvscsnni() {
    for (ScopingConstruct.StaticNested.NestedInner scsnni = null; ; ) {}
  }

  void fvscsnnni() {
    for (ScopingConstruct.StaticNested.@Nullable NestedInner scsnnni = null; ; ) {}
  }
}