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

isNone, none, some, 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