1b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato/* 2b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * ProGuard -- shrinking, optimization, obfuscation, and preverification 3b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * of Java bytecode. 4b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 52270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom * Copyright (c) 2002-2014 Eric Lafortune (eric@graphics.cornell.edu) 6b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 7b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This program is free software; you can redistribute it and/or modify it 8b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * under the terms of the GNU General Public License as published by the Free 9b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * Software Foundation; either version 2 of the License, or (at your option) 10b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * any later version. 11b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 12b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * This program is distributed in the hope that it will be useful, but WITHOUT 13b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 15b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * more details. 16b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 17b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * You should have received a copy of the GNU General Public License along 18b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * with this program; if not, write to the Free Software Foundation, Inc., 19b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 21b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratopackage proguard.classfile.util; 22b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 232270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstromimport proguard.classfile.*; 24b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 25b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 26b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato/** 27b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * An <code>ExternalTypeEnumeration</code> provides an enumeration of all 28b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * types listed in a given external descriptor string. The method name can 29b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * be retrieved separately. 30b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * <p> 31b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * A <code>ExternalTypeEnumeration</code> object can be reused for processing 32b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * different subsequent descriptors, by means of the <code>setDescriptor</code> 33b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * method. 34b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * 35b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato * @author Eric Lafortune 36b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato */ 37b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onoratopublic class ExternalTypeEnumeration 38b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato{ 39b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato private String descriptor; 40b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato private int index; 41b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 42b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 43b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public ExternalTypeEnumeration(String descriptor) 44b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 45b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato setDescriptor(descriptor); 46b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 47b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 48b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 49b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato ExternalTypeEnumeration() 50b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 51b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 52b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 53b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 54b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato void setDescriptor(String descriptor) 55b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 56b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato this.descriptor = descriptor; 57b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 58b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato reset(); 59b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 60b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 61b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 62b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public void reset() 63b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 642270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom index = descriptor.indexOf(JavaConstants.METHOD_ARGUMENTS_OPEN) + 1; 65b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 66b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (index < 1) 67b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 68b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato throw new IllegalArgumentException("Missing opening parenthesis in descriptor ["+descriptor+"]"); 69b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 70b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 71b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 72b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 73b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public boolean hasMoreTypes() 74b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 75b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato return index < descriptor.length() - 1; 76b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 77b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 78b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 79b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public String nextType() 80b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 81b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato int startIndex = index; 82b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 83b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Find the next separating comma. 842270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom index = descriptor.indexOf(JavaConstants.METHOD_ARGUMENTS_SEPARATOR, 85b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato startIndex); 86b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 87b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato // Otherwise find the closing parenthesis. 88b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (index < 0) 89b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 902270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom index = descriptor.indexOf(JavaConstants.METHOD_ARGUMENTS_CLOSE, 91b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato startIndex); 92b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato if (index < 0) 93b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 94b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato throw new IllegalArgumentException("Missing closing parenthesis in descriptor ["+descriptor+"]"); 95b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 96b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 97b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 98b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato return descriptor.substring(startIndex, index++).trim(); 99b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 100b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 101b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato 102b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato public String methodName() 103b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato { 1042270795fbe0b277bfd49f40950ecaa78583175ccBrian Carlstrom return descriptor.substring(0, descriptor.indexOf(JavaConstants.METHOD_ARGUMENTS_OPEN)).trim(); 105b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato } 106b72c5c2e5482cf10117b2b25f642f7616b2326c3Joe Onorato} 107