juneau-core/juneau-marshall/src/main/java/org/apache/juneau/internal/KeywordSet.java

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package org.apache.juneau.internal;

import java.util.*;

/**
 * Stores a set of language keywords for quick lookup.
 */
public final class KeywordSet {
	final String[] store;

	/**
	 * Constructor.
	 *
	 * @param keywords The list of keywords.
	 */
	public KeywordSet(String... keywords) {
		this.store = keywords;
		Arrays.sort(store);
	}

	/**
	 * Returns <jk>true</jk> if the specified string exists in this store.
	 *
	 * @param s The string to check.
	 * @return <jk>true</jk> if the specified string exists in this store.
	 */
	public boolean contains(String s) {
		if (s == null || s.length() < 2)
			return false;
		return Arrays.binarySearch(store, s) >= 0;
	}
}