content: /*******************************************************************************
   * Copyright (c) 2009, 2019 Mountainminds GmbH & Co. KG and Contributors
   * All rights reserved. This program and the accompanying materials
   * are made available under the terms of the Eclipse Public License v1.0
   * which accompanies this distribution, and is available at
   * http://www.eclipse.org/legal/epl-v10.html
   *
   * Contributors:
   *    Marc R. Hoffmann - initial API and implementation
   *    
   *******************************************************************************/
  package org.jacoco.core.analysis;
  
  /**
   * Interface for coverage nodes that have individual source lines like methods,
   * classes and source files.
   */
  public interface ISourceNode extends ICoverageNode {
  
  	/** Place holder for unknown lines (no debug information) */
  	int UNKNOWN_LINE = -1;
  
  	/**
  	 * The number of the first line coverage information is available for. If no
  	 * line is contained, the method returns -1.
  	 * 
  	 * @return number of the first line or {@link #UNKNOWN_LINE}
  	 */
  	int getFirstLine();
  
  	/**
  	 * The number of the last line coverage information is available for. If no
  	 * line is contained, the method returns -1.
  	 * 
  	 * @return number of the last line or {@link #UNKNOWN_LINE}
  	 */
  	int getLastLine();
  
  	/**
  	 * Returns the line information for given line.
  	 * 
  	 * @param nr
  	 *            line number of interest
  	 * @return line information
  	 */
  	ILine getLine(int nr);
  
  }
  