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A collection of tests for ANTLR 4 Runtime libraries.

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/*
 * [The "BSD license"]
 *  Copyright (c) 2015 Terence Parr
 *  Copyright (c) 2015 Sam Harwell
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 *  IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 *  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 *  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 *  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.antlr.v4.testgen;

import java.util.AbstractMap;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Set;

/**
 *
 * @author Sam Harwell
 */
public class LinesStringMap extends AbstractMap {

	@Override
	public Object get(Object key) {
		if (key instanceof String) {
			String str = (String)key;
			if (str.isEmpty()) {
				return Collections.singletonList(str);
			}

			ArrayList result = new ArrayList();
			int startIndex = 0;
			while (startIndex < str.length()) {
				int endIndex = str.indexOf('\n', startIndex);
				if (endIndex < 0) {
					result.add(str.substring(startIndex));
					break;
				}

				result.add(str.substring(startIndex, endIndex + 1));
				startIndex = endIndex + 1;
			}

			return result;
		}

		return super.get(key);
	}

	@Override
	public boolean containsKey(Object key) {
		return key instanceof String;
	}

	@Override
	public Set> entrySet() {
		return Collections.emptySet();
	}

}