import org.checkerframework.common.initializedfields.qual.EnsuresInitializedFields;

// import org.checkerframework.common.initializedfields.qual.InitializedFields;

public class EnsuresInitializedFieldsTest {

  int x;
  int y;
  int z;

  EnsuresInitializedFieldsTest() {
    x = 1;
    y = 2;
    z = 3;
  }

  @EnsuresInitializedFields(
      value = "this",
      fields = {"x", "y"})
  // :: error: (contracts.postcondition)
  void setsX() {
    x = 1;
  }

  @EnsuresInitializedFields(fields = {"x", "y"})
  // :: error: (contracts.postcondition)
  void setsX2() {
    x = 1;
  }

  @EnsuresInitializedFields(
      value = "#1",
      fields = {"x", "y"})
  // :: error: (contracts.postcondition)
  void setsX(EnsuresInitializedFieldsTest eift) {
    eift.x = 1;
  }

  @EnsuresInitializedFields(
      value = "this",
      fields = {"x", "y"})
  void setsXY() {
    x = 1;
    y = 2;
  }

  @EnsuresInitializedFields(fields = {"x", "y"})
  void setsXY2() {
    x = 1;
    y = 2;
  }

  @EnsuresInitializedFields(
      value = "#1",
      fields = {"x", "y"})
  void setsXY(EnsuresInitializedFieldsTest eift) {
    eift.x = 1;
    eift.y = 2;
  }

  @EnsuresInitializedFields(
      value = "#1",
      fields = {"x", "y"})
  void setsXY2(EnsuresInitializedFieldsTest eift) {
    setsXY(eift);
  }

  @EnsuresInitializedFields(
      value = "#1",
      fields = {"x", "y"})
  @EnsuresInitializedFields(
      value = "#2",
      fields = {"x", "z"})
  void setsXY2(EnsuresInitializedFieldsTest eift1, EnsuresInitializedFieldsTest eift2) {
    setsXY(eift1);
    setsX(eift2);
    eift2.z = 3;
  }
}