diff options
Diffstat (limited to 'src/proguard/obfuscate/MemberNameFilter.java')
-rw-r--r-- | src/proguard/obfuscate/MemberNameFilter.java | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/src/proguard/obfuscate/MemberNameFilter.java b/src/proguard/obfuscate/MemberNameFilter.java new file mode 100644 index 0000000..6d95270 --- /dev/null +++ b/src/proguard/obfuscate/MemberNameFilter.java @@ -0,0 +1,120 @@ +/* + * ProGuard -- shrinking, optimization, obfuscation, and preverification + * of Java bytecode. + * + * Copyright (c) 2002-2013 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.obfuscate; + +import proguard.classfile.*; +import proguard.classfile.visitor.MemberVisitor; + +/** + * This <code>MemberVisitor</code> delegates its visits to another given + * <code>MemberVisitor</code>, but only when the visited member has a new name. + * Constructors are judged based on the class name. + * + * @see ClassObfuscator + * @see MemberObfuscator + * + * @author Eric Lafortune + */ +public class MemberNameFilter implements MemberVisitor +{ + private final MemberVisitor memberVisitor; + + + /** + * Creates a new MemberNameFilter. + * @param memberVisitor the <code>MemberVisitor</code> to which + * visits will be delegated. + */ + public MemberNameFilter(MemberVisitor memberVisitor) + { + this.memberVisitor = memberVisitor; + } + + + // Implementations for MemberVisitor. + + public void visitProgramField(ProgramClass programClass, ProgramField programField) + { + if (hasName(programField)) + { + memberVisitor.visitProgramField(programClass, programField); + } + } + + + public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod) + { + if (hasName(programClass, programMethod)) + { + memberVisitor.visitProgramMethod(programClass, programMethod); + } + } + + + public void visitLibraryField(LibraryClass libraryClass, LibraryField libraryField) + { + if (hasName(libraryField)) + { + memberVisitor.visitLibraryField(libraryClass, libraryField); + } + } + + + public void visitLibraryMethod(LibraryClass libraryClass, LibraryMethod libraryMethod) + { + if (hasName(libraryClass, libraryMethod)) + { + memberVisitor.visitLibraryMethod(libraryClass, libraryMethod); + } + } + + + // Small utility methods. + + /** + * Returns whether the given class has a new name. + */ + private boolean hasName(Clazz clazz) + { + return ClassObfuscator.newClassName(clazz) != null; + } + + + /** + * Returns whether the given method has a new name. + */ + private boolean hasName(Clazz clazz, Method method) + { + return + hasName(method) || + (hasName(clazz) && + method.getName(clazz).equals(ClassConstants.INTERNAL_METHOD_NAME_INIT)); + } + + + /** + * Returns whether the given class member has a new name. + */ + private boolean hasName(Member member) + { + return MemberObfuscator.newMemberName(member) != null; + } +} |