IProbeArrayStrategy.java revision 66aa380fc544f5646d507ad8cc8ce539866f005c 
1/*******************************************************************************
2 * Copyright (c) 2009, 2011 Mountainminds GmbH & Co. KG and Contributors
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 *    Marc R. Hoffmann - initial API and implementation
10 *
11 *******************************************************************************/
12package org.jacoco.core.internal.instr;
13
14import org.objectweb.asm.ClassVisitor;
15import org.objectweb.asm.MethodVisitor;
16
17/**
18 * Strategies to retrieve the probe array instance for each method within a
19 * type. This abstraction is required as we need to follow a different strategy
20 * depending on whether the instrumented type is a class or interface.
21 */
22interface IProbeArrayStrategy {
23
24	/**
25	 * Creates code that pushes the probe array instance on the operand stack.
26	 *
27	 * @param mv
28	 *            visitor to create code
29	 * @return maximum stack size required by the generated code
30	 */
31	int pushInstance(MethodVisitor mv);
32
33	/**
34	 * Adds additional class members required by this strategy.
35	 *
36	 * @param delegate
37	 *            visitor to create fields and classes
38	 */
39	void addMembers(ClassVisitor delegate);
40
41}
42