fj.data.vector.V5 Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of functionaljava Show documentation
Show all versions of functionaljava Show documentation
Functional Java is an open source library that supports closures for the Java programming language
package fj.data.vector;
import fj.F;
import fj.F2;
import fj.P1;
import fj.P2;
import fj.P4;
import fj.P5;
import static fj.Function.curry;
import static fj.P.p2;
import fj.data.Array;
import fj.data.NonEmptyList;
import fj.data.Stream;
import java.util.Iterator;
/**
* A vector-5.
*/
public final class V5 implements Iterable {
private final V4 tail;
private final P1 head;
private V5(final P1 head, final V4 tail) {
this.head = head;
this.tail = tail;
}
/**
* Creates a vector-5 from a homogeneous product-5.
*
* @param p The product-5 from which to create a vector.
* @return A new vector-5.
*/
public static V5 p(final P5 p) {
return new V5(new P1() {
public A _1() {
return p._1();
}
}, V4.p(new P4() {
public A _1() {
return p._2();
}
public A _2() {
return p._3();
}
public A _3() {
return p._4();
}
public A _4() {
return p._5();
}
}));
}
/**
* Creates a vector-5 from a head and a tail.
*
* @param head The value to put as the first element of the vector.
* @param tail The vector representing all but the first element of the new vector.
* @return The new vector.
*/
public static V5 cons(final P1 head, final V4 tail) {
return new V5(head, tail);
}
/**
* Returns the first element of this vector.
*
* @return the first element of this vector.
*/
public A _1() {
return head._1();
}
/**
* Returns the second element of this vector.
*
* @return the second element of this vector.
*/
public A _2() {
return tail._1();
}
/**
* Returns the third element of this vector.
*
* @return the third element of this vector.
*/
public A _3() {
return tail._2();
}
/**
* Returns the fourth element of this vector.
*
* @return the fourth element of this vector.
*/
public A _4() {
return tail._3();
}
/**
* Returns the fifth element of this vector.
*
* @return the fifth element of this vector.
*/
public A _5() {
return tail._4();
}
/**
* Returns all but the first element of this vector, as a vector-4.
*
* @return all but the first element of this vector, as a vector-4.
*/
public V4 tail() {
return tail;
}
/**
* Returns the first element of this vector, as a product-1.
*
* @return the first element of this vector, as a product-1.
*/
public P1 head() {
return head;
}
/**
* Returns an iterator for the elements of this vector.
*
* @return an iterator for the elements of this vector.
*/
public Iterator iterator() {
return toStream().iterator();
}
/**
* Returns a homogeneous product-5 equivalent to this vector.
*
* @return a homogeneous product-5 equivalent to this vector.
*/
public P5 p() {
return new P5() {
public A _1() {
return V5.this._1();
}
public A _2() {
return V5.this._2();
}
public A _3() {
return V5.this._3();
}
public A _4() {
return V5.this._4();
}
public A _5() {
return V5.this._5();
}
};
}
/**
* Returns a nonempty list with the elements of this vector.
*
* @return a nonempty list with the elements of this vector.
*/
public NonEmptyList toNonEmptyList() {
return NonEmptyList.nel(_1(), tail.toNonEmptyList().toList());
}
/**
* Returns a stream of the elements of this vector.
*
* @return a stream of the elements of this vector.
*/
public Stream toStream() {
return Stream.cons(head._1(), new P1>() {
public Stream _1() {
return tail.toStream();
}
});
}
/**
* Returns an array with the elements of this vector.
*
* @return an array with the elements of this vector.
*/
@SuppressWarnings("unchecked")
public Array toArray() {
return Array.array(_1(), _2(), _3(), _4(), _5());
}
/**
* Maps the given function across this vector.
*
* @param f The function to map across this vector.
* @return A new vector after the given function has been applied to each element.
*/
public V5 map(final F f) {
return new V5(head.map(f), tail.map(f));
}
/**
* Performs function application within a vector (applicative functor pattern).
*
* @param vf The vector of functions to apply.
* @return A new vector after zipping the given vector of functions over this vector.
*/
public V5 apply(final V5> vf) {
return new V5(head.apply(vf.head()), tail.apply(vf.tail()));
}
/**
* Zips this vector with the given vector using the given function to produce a new vector.
*
* @param bs The vector to zip this vector with.
* @param f The function to zip this vector and the given vector with.
* @return A new vector with the results of the function.
*/
public V5 zipWith(final F> f, final V5 bs) {
return bs.apply(map(f));
}
/**
* Zips this vector with the given vector to produce a vector of pairs.
*
* @param bs The vector to zip this vector with.
* @return A new vector with a length the same as the shortest of this vector and the given
* vector.
*/
public V5> zip(final V5 bs) {
final F>> __2 = p2();
return zipWith(__2, bs);
}
/**
* Zips this vector with the given vector to produce a vector of vectors.
*
* @param bs The vector to zip this vector with.
* @return A new vector of vectors.
*/
public V5> vzip(final V5 bs) {
final F2> __2 = V.v2();
return zipWith(curry(__2), bs);
}
/**
* Returns a function that transforms a vector-5 to a stream of its elements.
*
* @return a function that transforms a vector-5 to a stream of its elements.
*/
public static F, Stream> toStream_() {
return new F, Stream>() {
public Stream f(final V5 v) {
return v.toStream();
}
};
}
/**
* Returns a function that transforms a vector-5 to the equivalent product-5.
*
* @return a function that transforms a vector-5 to the equivalent product-5.
*/
public static F, P5> p_() {
return new F, P5>() {
public P5 f(final V5 v) {
return v.p();
}
};
}
/**
* A first-class function to get the first element of a vector.
*
* @return a function that gets the first element of a given vector.
*/
public static F, A> __1() {
return new F, A>() {
public A f(final V5 v) {
return v._1();
}
};
}
/**
* A first-class function to get the second element of a vector.
*
* @return a function that gets the second element of a given vector.
*/
public static F, A> __2() {
return new F, A>() {
public A f(final V5 v) {
return v._2();
}
};
}
/**
* A first-class function to get the third element of a vector.
*
* @return a function that gets the third element of a given vector.
*/
public static F, A> __3() {
return new F, A>() {
public A f(final V5 v) {
return v._3();
}
};
}
/**
* A first-class function to get the fourth element of a vector.
*
* @return a function that gets the fourth element of a given vector.
*/
public static F, A> __4() {
return new F, A>() {
public A f(final V5 v) {
return v._4();
}
};
}
/**
* A first-class function to get the fifth element of a vector.
*
* @return a function that gets the fifth element of a given vector.
*/
public static F, A> __5() {
return new F, A>() {
public A f(final V5 v) {
return v._5();
}
};
}
}