/* ###
 * IP: GHIDRA
 * REVIEWED: YES
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package ghidra.sleigh.grammar;

import java.util.SortedMap;
import java.util.TreeMap;

public class Locator {
	private TreeMap<Integer, Location> map = new TreeMap<Integer, Location>();

	public void registerLocation(int expandedLineNo, Location realLocation) {
		map.put(expandedLineNo, realLocation);
	}

	public Location getLocation(int expandedLineNo) {
		SortedMap<Integer, Location> headMap = map.headMap(expandedLineNo + 1);
		Integer key;
		Location location;
		Location correctLocation;
		if (headMap.size() == 0) {
			return null;
		}
		key = headMap.lastKey();
		location = headMap.get(key);
		int actualLineNumber = expandedLineNo - key + location.lineno;
		correctLocation = new Location(location.filename, actualLineNumber);
		return correctLocation;
	}
}
