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.report;
  
  import java.io.IOException;
  import java.util.Collection;
  import java.util.List;
  
  import org.jacoco.core.data.ExecutionData;
  import org.jacoco.core.data.SessionInfo;
  
  /**
   * Interface for all implementations to retrieve structured report data. Unlike
   * nested {@link IReportGroupVisitor} instances the root visitor accepts exactly one
   * bundle or group.
   */
  public interface IReportVisitor extends IReportGroupVisitor {
  
  	/**
  	 * Initializes the report with global information. This method has to be
  	 * called before any other method can be called.
  	 * 
  	 * @param sessionInfos
  	 *            list of chronological ordered {@link SessionInfo} objects
  	 *            where execution data has been collected for this report.
  	 * @param executionData
  	 *            collection of all {@link ExecutionData} objects that are
  	 *            considered for this report
  	 * @throws IOException
  	 *             in case of IO problems with the report writer
  	 */
  	void visitInfo(List<SessionInfo> sessionInfos,
  			Collection<ExecutionData> executionData) throws IOException;
  
  	/**
  	 * Has to be called after all report data has been emitted.
  	 * 
  	 * @throws IOException
  	 *             in case of IO problems with the report writer
  	 */
  	void visitEnd() throws IOException;
  
  }
  