org.javimmutable.collections.sequence.FilledSequenceNode Maven / Gradle / Ivy

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// Burton Computer Corporation
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package org.javimmutable.collections.sequence;

import org.javimmutable.collections.InsertableSequence;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import javax.annotation.concurrent.Immutable;

@Immutable
public class FilledSequenceNode
    implements InsertableSequence
{
    private final InsertableSequence next;
    private final T value;

    private FilledSequenceNode(@Nonnull InsertableSequence next,
                               @Nullable T value)
    {
        this.next = next;
        this.value = value;
    }

    public static  InsertableSequence of(@Nullable T value)
    {
        return new FilledSequenceNode<>(EmptySequenceNode.of(), value);
    }

    @Nonnull
    @Override
    public InsertableSequence insert(T value)
    {
        return new FilledSequenceNode<>(this, value);
    }

    @Override
    public boolean isEmpty()
    {
        return false;
    }

    @Override
    public T getHead()
    {
        return value;
    }

    @Nonnull
    @Override
    public InsertableSequence getTail()
    {
        return next;
    }
}