1 /* 2 * ProGuard -- shrinking, optimization, obfuscation, and preverification 3 * of Java bytecode. 4 * 5 * Copyright (c) 2002-2014 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 */ 21 package proguard.evaluation; 22 23 import proguard.classfile.*; 24 import proguard.classfile.attribute.CodeAttribute; 25 import proguard.classfile.instruction.ConstantInstruction; 26 import 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 */ 34 public interface InvocationUnit 35 { 36 /** 37 * Sets up the given variables for entering the given method. 38 */ enterMethod(Clazz clazz, Method method, Variables variables)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 */ exitMethod(Clazz clazz, Method method, Value returnValue)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 */ invokeMember(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, ConstantInstruction constantInstruction, Stack stack)56 public void invokeMember(Clazz clazz, 57 Method method, 58 CodeAttribute codeAttribute, 59 int offset, 60 ConstantInstruction constantInstruction, 61 Stack stack); 62 } 63