| 1 | /* |
| 2 | * Copyright (c) 2001-2009, Jean Tessier |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * |
| 9 | * * Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * |
| 12 | * * Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * |
| 16 | * * Neither the name of Jean Tessier nor the names of his contributors |
| 17 | * may be used to endorse or promote products derived from this software |
| 18 | * without specific prior written permission. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 21 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 22 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 23 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR |
| 24 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 25 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 26 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 27 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 28 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 29 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 30 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | */ |
| 32 | |
| 33 | package com.jeantessier.classreader; |
| 34 | |
| 35 | public class ClassDependencyCollector extends CollectorBase { |
| 36 | private Class_info thisClass; |
| 37 | private boolean top = true; |
| 38 | |
| 39 | public void visitClassfile(Classfile classfile) { |
| 40 | thisClass = classfile.getRawClass(); |
| 41 | |
| 42 | classfile.getConstantPool().accept(this); |
| 43 | |
| 44 | classfile.getRawSuperclass().accept(this); |
| 45 | |
| 46 | for (Class_info class_info : classfile.getAllInterfaces()) { |
| 47 | class_info.accept(this); |
| 48 | } |
| 49 | |
| 50 | for (Field_info field : classfile.getAllFields()) { |
| 51 | field.accept(this); |
| 52 | } |
| 53 | |
| 54 | for (Method_info method : classfile.getAllMethods()) { |
| 55 | method.accept(this); |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | public void visitClass_info(Class_info entry) { |
| 60 | String classname = entry.getName(); |
| 61 | |
| 62 | if (entry != thisClass) { |
| 63 | if (classname.startsWith("[") ) { |
| 64 | top = false; |
| 65 | entry.getRawName().accept(this); |
| 66 | top = true; |
| 67 | } else { |
| 68 | add(classname); |
| 69 | } |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | public void visitFieldRef_info(FieldRef_info entry) { |
| 74 | if (top) { |
| 75 | if (entry.getRawClass() == thisClass) { |
| 76 | top = false; |
| 77 | entry.getRawNameAndType().accept(this); |
| 78 | top = true; |
| 79 | } |
| 80 | } else { |
| 81 | entry.getRawNameAndType().accept(this); |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | public void visitMethodRef_info(MethodRef_info entry) { |
| 86 | if (top) { |
| 87 | if (entry.getRawClass() == thisClass) { |
| 88 | top = false; |
| 89 | entry.getRawNameAndType().accept(this); |
| 90 | top = true; |
| 91 | } |
| 92 | } else { |
| 93 | entry.getRawNameAndType().accept(this); |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | public void visitInterfaceMethodRef_info(InterfaceMethodRef_info entry) { |
| 98 | if (top) { |
| 99 | if (entry.getRawClass() == thisClass) { |
| 100 | top = false; |
| 101 | entry.getRawNameAndType().accept(this); |
| 102 | top = true; |
| 103 | } |
| 104 | } else { |
| 105 | entry.getRawNameAndType().accept(this); |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | public void visitString_info(String_info entry) { |
| 110 | if (!top) { |
| 111 | entry.getRawValue().accept(this); |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | public void visitNameAndType_info(NameAndType_info entry) { |
| 116 | if (!top) { |
| 117 | entry.getRawType().accept(this); |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | public void visitUTF8_info(UTF8_info entry) { |
| 122 | if (!top) { |
| 123 | processSignature(entry.getValue()); |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | public void visitField_info(Field_info entry) { |
| 128 | processSignature(entry.getDescriptor()); |
| 129 | |
| 130 | super.visitField_info(entry); |
| 131 | } |
| 132 | |
| 133 | public void visitMethod_info(Method_info entry) { |
| 134 | processSignature(entry.getDescriptor()); |
| 135 | |
| 136 | super.visitMethod_info(entry); |
| 137 | } |
| 138 | |
| 139 | public void visitLocalVariable(LocalVariable helper) { |
| 140 | processSignature(helper.getDescriptor()); |
| 141 | |
| 142 | super.visitLocalVariable(helper); |
| 143 | } |
| 144 | |
| 145 | private void processSignature(String str) { |
| 146 | int currentPos = 0; |
| 147 | int startPos; |
| 148 | int endPos; |
| 149 | |
| 150 | while ((startPos = str.indexOf('L', currentPos)) != -1) { |
| 151 | if ((endPos = str.indexOf(';', startPos)) != -1) { |
| 152 | String candidate = str.substring(startPos + 1, endPos); |
| 153 | if (!thisClass.getName().equals(candidate)) { |
| 154 | add(ClassNameHelper.path2ClassName(candidate)); |
| 155 | } |
| 156 | currentPos = endPos + 1; |
| 157 | } else { |
| 158 | currentPos = startPos + 1; |
| 159 | } |
| 160 | } |
| 161 | } |
| 162 | } |