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Diffstat (limited to 'src/proguard/LibraryKeepChecker.java')
-rw-r--r-- | src/proguard/LibraryKeepChecker.java | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/src/proguard/LibraryKeepChecker.java b/src/proguard/LibraryKeepChecker.java new file mode 100644 index 0000000..3209539 --- /dev/null +++ b/src/proguard/LibraryKeepChecker.java @@ -0,0 +1,115 @@ +/* + * ProGuard -- shrinking, optimization, obfuscation, and preverification + * of Java bytecode. + * + * Copyright (c) 2002-2014 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; + +import proguard.classfile.*; +import proguard.classfile.util.*; +import proguard.classfile.visitor.*; +import proguard.optimize.*; + +import java.util.List; + +/** + * This class checks whether some keep rules only keep library classes, no + * program classes. That is strange, because library classes never need to + * be kept explicitly. + * + * @author Eric Lafortune + */ +public class LibraryKeepChecker +implements ClassVisitor +{ + private final ClassPool programClassPool; + private final ClassPool libraryClassPool; + private final WarningPrinter notePrinter; + + // Some fields acting as parameters for the class visitor. + private String keepName; + + + /** + * Creates a new DescriptorKeepChecker. + */ + public LibraryKeepChecker(ClassPool programClassPool, + ClassPool libraryClassPool, + WarningPrinter notePrinter) + { + this.programClassPool = programClassPool; + this.libraryClassPool = libraryClassPool; + this.notePrinter = notePrinter; + } + + + /** + * Checks the classes mentioned in the given keep specifications, printing + * notes if necessary. + */ + public void checkClassSpecifications(List keepSpecifications) + { + if (keepSpecifications != null) + { + // Go over all individual keep specifications. + for (int index = 0; index < keepSpecifications.size(); index++) + { + KeepClassSpecification keepClassSpecification = + (KeepClassSpecification)keepSpecifications.get(index); + + // Is the keep specification more specific than a general + // wildcard? + keepName = keepClassSpecification.className; + if (keepName != null) + { + // Doesn't the specification match any program classes? + ClassCounter programClassCounter = new ClassCounter(); + programClassPool.accept( + ClassSpecificationVisitorFactory.createClassPoolVisitor(keepClassSpecification, + programClassCounter, + null)); + if (programClassCounter.getCount() == 0) + { + // Print out notes about any matched library classes. + libraryClassPool.accept( + ClassSpecificationVisitorFactory.createClassPoolVisitor(keepClassSpecification, + this, + null)); + } + } + } + } + } + + + // Implementations for ClassVisitor. + + public void visitProgramClass(ProgramClass programClass) {} + + + public void visitLibraryClass(LibraryClass libraryClass) + { + String className = libraryClass.getName(); + notePrinter.print(className, + "Note: the configuration explicitly specifies '" + + ClassUtil.externalClassName(keepName) + + "' to keep library class '" + + ClassUtil.externalClassName(className) + + "'"); + } +} |