Result.java

package jetbrains.mps.baseLanguage.closures.runtime;

/*Generated by MPS */


public class Result<T, R> {
  public static Result<Object, Object> RETURN_VOID = new Result<Object, Object>(Outcome.RETURN_VOID);
  public static Result<Object, Object> TERMINATE_VOID = new Result<Object, Object>(Outcome.TERMINATE_VOID);
  public static Result<Object, Object> BREAK = new Result<Object, Object>(Outcome.BREAK);
  public static Result<Object, Object> NONE = new Result<Object, Object>(Outcome.NONE);
  private Outcome outcome;
  private String breakLabel;
  private R retVal;
  private T termVal;
  private Result(Outcome outcome, T termVal, R retVal) {
    this.outcome = outcome;
    this.termVal = termVal;
    this.retVal = retVal;
  }
  private Result(Outcome outcome) {
    this.outcome = outcome;
  }
  private Result(String label) {
    this.outcome = Outcome.BREAK;
    this.breakLabel = label;
  }
  public Outcome getOutcome() {
    return outcome;
  }
  public R returnObject() {
    return getRetVal();
  }
  public T terminateObject() {
    return getTermVal();
  }
  public boolean returnBoolean() {
    return ((Boolean) getRetVal()).booleanValue();
  }
  public boolean terminateBoolean() {
    return ((Boolean) getTermVal()).booleanValue();
  }
  public byte returnByte() {
    return ((Byte) getRetVal()).byteValue();
  }
  public byte terminateByte() {
    return ((Byte) getTermVal()).byteValue();
  }
  public char returnChar() {
    return ((Character) getRetVal()).charValue();
  }
  public char terminateChar() {
    return ((Character) getTermVal()).charValue();
  }
  public double returnDouble() {
    return ((Double) getRetVal()).doubleValue();
  }
  public double terminateDouble() {
    return ((Double) getTermVal()).doubleValue();
  }
  public float returnFloat() {
    return ((Float) getRetVal()).floatValue();
  }
  public float terminateFloat() {
    return ((Float) getTermVal()).floatValue();
  }
  public int returnInt() {
    return ((Integer) getRetVal()).intValue();
  }
  public int terminateInt() {
    return ((Integer) getTermVal()).intValue();
  }
  public long returnLong() {
    return ((Long) getRetVal()).longValue();
  }
  public long terminateLong() {
    return ((Long) getTermVal()).longValue();
  }
  public short returnShort() {
    return ((Short) getRetVal()).shortValue();
  }
  public short terminateShort() {
    return ((Short) getTermVal()).shortValue();
  }
  public String getBreakLabel() {
    return breakLabel;
  }
  private R getRetVal() {
    switch (outcome) {
      case RETURN_VALUE:
        return retVal;
      default:
        throw new IllegalStateException();
    }
  }
  private T getTermVal() {
    switch (outcome) {
      case TERMINATE_VALUE:
        return termVal;
      default:
        throw new IllegalStateException();
    }
  }
  @SuppressWarnings(value = "unchecked")
  public static <U, S> Result<U, S> RETURN(S val) {
    return (Result<U, S>) new Result<Object, S>(Outcome.RETURN_VALUE, null, val);
  }
  @SuppressWarnings(value = "unchecked")
  public static <U, S> Result<U, S> TERMINATE(U val) {
    return (Result<U, S>) new Result<U, Object>(Outcome.TERMINATE_VALUE, val, null);
  }
  @SuppressWarnings(value = "unchecked")
  public static <U> Result<U, Object> RETURN_VOID() {
    return (Result<U, Object>) RETURN_VOID;
  }
  @SuppressWarnings(value = "unchecked")
  public static <S> Result<Object, S> TERMINATE_VOID() {
    return (Result<Object, S>) TERMINATE_VOID;
  }
  @SuppressWarnings(value = "unchecked")
  public static <U, V> Result<U, V> BREAK() {
    return (Result<U, V>) BREAK;
  }
  @SuppressWarnings(value = "unchecked")
  public static <U, V> Result<U, V> BREAK(String label) {
    return new Result<U, V>(label);
  }
  @SuppressWarnings(value = "unchecked")
  public static <U, V> Result<U, V> NONE() {
    return (Result<U, V>) NONE;
  }
}