# OfflineInstrumentationAccessGenerator.java

    /*******************************************************************************
     * Copyright (c) 2009, 2013 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.runtime;

    import org.jacoco.core.JaCoCo;
    import org.jacoco.core.internal.instr.InstrSupport;
    import org.objectweb.asm.MethodVisitor;
    import org.objectweb.asm.Opcodes;

    /**
     * This implementation of {@link IExecutionDataAccessorGenerator} generate a
     * direct dependency to the JaCoCo runtime agent to initialize the runtime and
     * obtain probe arrays. This generator is designed for offline instrumentation
     * only.
     */
    public class OfflineInstrumentationAccessGenerator implements
    		IExecutionDataAccessorGenerator {

    	private final String runtimeClassName;

    	/**
    	 * Creates a new instance for offline instrumentation.
    	 */
    	public OfflineInstrumentationAccessGenerator() {
    		this(JaCoCo.RUNTIMEPACKAGE.replace('.', '/') + "/Offline");
    	}

    	/**
    	 * Creates a new instance with the given runtime class name for testing
    	 * purposes
    	 *
    	 * @param runtimeClassName
    	 *            VM name of the runtime class
    	 */
    	OfflineInstrumentationAccessGenerator(final String runtimeClassName) {
    		this.runtimeClassName = runtimeClassName;
    	}

    	public int generateDataAccessor(final long classid, final String classname,
    			final int probecount, final MethodVisitor mv) {
    		mv.visitLdcInsn(Long.valueOf(classid));
    		mv.visitLdcInsn(classname);
    		InstrSupport.push(mv, probecount);
    		mv.visitMethodInsn(Opcodes.INVOKESTATIC, runtimeClassName, "getProbes",
    				"(JLjava/lang/String;I)[Z");
    		return 4;
    	}

    }