edu.rice.cs.plt.tuple
Class Wrapper<T>

java.lang.Object
  edu.rice.cs.plt.tuple.Tuple
      edu.rice.cs.plt.tuple.Option<T>
          edu.rice.cs.plt.tuple.Wrapper<T>

All Implemented Interfaces:

Thunk<T>, Serializable

Direct Known Subclasses:

IdentityWrapper

public class Wrapper<T>
extends Option<T>
implements Thunk<T>

An arbitrary 1-tuple; overrides toString(), equals(Object), and Tuple.hashCode().

See Also:

Serialized Form

Field Summary

protected T

_value

Constructor Summary

Wrapper(T value)

Method Summary

<Ret> Ret	apply(OptionVisitor<? super T,? extends Ret> visitor) Calls the appropriate case in the visitor.
boolean	equals(Object o)
static <T> Lambda<T,Wrapper<T>>	factory() Produce a lambda that invokes the constructor
protected int	generateHashCode()
boolean	isSome() Determine whether this Option is a "some" case.
static <T> Wrapper<T>	make(T value) Call the constructor (allows T to be inferred)
String	toString()
T	unwrap() Get the value wrapped by this Option, or throw an OptionUnwrapException if there is no wrapped value.
T	unwrap(T forNone) Get the value wrapped by this Option, or forNone if there is no wrapped value.
T	value()

Methods inherited from class edu.rice.cs.plt.tuple.Option

comparator, comparator, isNone, none, some, unwrap, wrap

Methods inherited from class edu.rice.cs.plt.tuple.Tuple

hashCode

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

_value

protected final T _value

Constructor Detail

Wrapper

public Wrapper(T value)

Method Detail

value

public T value()

Specified by:

value in interface Thunk<T>

unwrap

public T unwrap()

Description copied from class: Option

Get the value wrapped by this Option, or throw an OptionUnwrapException if there is no wrapped value.

Specified by:

unwrap in class Option<T>

unwrap

public T unwrap(T forNone)

Description copied from class: Option

Get the value wrapped by this Option, or forNone if there is no wrapped value.

Specified by:

unwrap in class Option<T>

apply

public <Ret> Ret apply(OptionVisitor<? super T,? extends Ret> visitor)

Description copied from class: Option

Calls the appropriate case in the visitor.

Specified by:

apply in class Option<T>

isSome

public boolean isSome()

Description copied from class: Option

Determine whether this Option is a "some" case. Mutually exclusive with Option.isNone().

Specified by:

isSome in class Option<T>

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

Returns:

true iff this is of the same class as o, and the wrapped values are equal (according to equals)

generateHashCode

protected int generateHashCode()

Specified by:

generateHashCode in class Tuple

make

public static <T> Wrapper<T> make(T value)

Call the constructor (allows T to be inferred)

factory

public static <T> Lambda<T,Wrapper<T>> factory()

Produce a lambda that invokes the constructor