1/* 2 * ProGuard -- shrinking, optimization, obfuscation, and preverification 3 * of Java bytecode. 4 * 5 * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu) 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by the Free 9 * Software Foundation; either version 2 of the License, or (at your option) 10 * any later version. 11 * 12 * This program is distributed in the hope that it will be useful, but WITHOUT 13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 15 * more details. 16 * 17 * You should have received a copy of the GNU General Public License along 18 * with this program; if not, write to the Free Software Foundation, Inc., 19 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 */ 21package proguard.evaluation; 22 23import proguard.classfile.*; 24import proguard.classfile.attribute.CodeAttribute; 25import proguard.classfile.instruction.ConstantInstruction; 26import proguard.evaluation.value.Value; 27 28/** 29 * This interface sets up the variables for entering a method, 30 * and it updates the stack for the invocation of a class member. 31 * 32 * @author Eric Lafortune 33 */ 34public interface InvocationUnit 35{ 36 /** 37 * Sets up the given variables for entering the given method. 38 */ 39 public void enterMethod(Clazz clazz, 40 Method method, 41 Variables variables); 42 43 44 /** 45 * Exits the given method with the given return value. 46 */ 47 public void exitMethod(Clazz clazz, 48 Method method, 49 Value returnValue); 50 51 52 /** 53 * Updates the given stack corresponding to the execution of the given 54 * field or method reference instruction. 55 */ 56 public void invokeMember(Clazz clazz, 57 Method method, 58 CodeAttribute codeAttribute, 59 int offset, 60 ConstantInstruction constantInstruction, 61 Stack stack); 62} 63