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Diffstat (limited to 'src/proguard/classfile/util/ClassSubHierarchyInitializer.java')
-rw-r--r-- | src/proguard/classfile/util/ClassSubHierarchyInitializer.java | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/src/proguard/classfile/util/ClassSubHierarchyInitializer.java b/src/proguard/classfile/util/ClassSubHierarchyInitializer.java new file mode 100644 index 0000000..30fd526 --- /dev/null +++ b/src/proguard/classfile/util/ClassSubHierarchyInitializer.java @@ -0,0 +1,77 @@ +/* + * ProGuard -- shrinking, optimization, obfuscation, and preverification + * of Java bytecode. + * + * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu) + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +package proguard.classfile.util; + +import proguard.classfile.*; +import proguard.classfile.visitor.ClassVisitor; + +/** + * This ClassVisitor adds all classes that it visits to the list of subclasses + * of their superclass. These subclass lists make it more convenient to travel + * + * @author Eric Lafortune + */ +public class ClassSubHierarchyInitializer +implements ClassVisitor +{ + // Implementations for ClassVisitor. + + public void visitProgramClass(ProgramClass programClass) + { + // Add this class to the subclasses of its superclass. + addSubclass(programClass, programClass.getSuperClass()); + + // Add this class to the subclasses of its interfaces. + for (int index = 0; index < programClass.u2interfacesCount; index++) + { + addSubclass(programClass, programClass.getInterface(index)); + } + } + + + public void visitLibraryClass(LibraryClass libraryClass) + { + // Add this class to the subclasses of its superclass, + addSubclass(libraryClass, libraryClass.superClass); + + // Add this class to the subclasses of its interfaces. + Clazz[] interfaceClasses = libraryClass.interfaceClasses; + if (interfaceClasses != null) + { + for (int index = 0; index < interfaceClasses.length; index++) + { + // Add this class to the subclasses of the interface class. + addSubclass(libraryClass, interfaceClasses[index]); + } + } + } + + + // Small utility methods. + + private void addSubclass(Clazz subclass, Clazz clazz) + { + if (clazz != null) + { + clazz.addSubClass(subclass); + } + } +} |