Class Sequence

src/main/java/groovy/lang/Sequence.java:33–303

Represents a sequence of zero or more objects of a given type. The type can be omitted in which case any type of object can be added.

 * The type can be omitted in which case any type of object can be added.
 */
public class Sequence extends ArrayList implements GroovyObject {

    @Serial private static final long serialVersionUID = 5697409354934589471L;
    private transient MetaClass metaClass = InvokerHelper.getMetaClass(getClass());
    private final Class type;
    private int hashCode;

    /**
     * Creates a sequence with no type restriction.
     */
    public Sequence() {
        this(null);
    }

    /**
     * Creates a sequence constrained to the supplied type.
     *
     * @param type the allowed element type
     */
    public Sequence(Class type) {
        this.type = type;
    }

    /**
     * Creates a sequence initialized with the supplied content.
     *
     * @param type the allowed element type
     * @param content the initial content
     */
    public Sequence(Class type, List content) {
        super(content.size());
        this.type = type;
        addAll(content);
    }

    /**
     * Sets the contents of this sequence to that
     * of the given collection.
     */
    public void set(Collection collection) {
        checkCollectionType(collection);
        clear();
        addAll(collection);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public boolean equals(Object that) {
        if (that instanceof Sequence) {
            return equals((Sequence) that);
        }
        return false;
    }

    /**
     * Compares this sequence with another sequence using Groovy equality.