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Diffstat (limited to 'src/proguard/DescriptorKeepChecker.java')
| -rw-r--r-- | src/proguard/DescriptorKeepChecker.java | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/src/proguard/DescriptorKeepChecker.java b/src/proguard/DescriptorKeepChecker.java new file mode 100644 index 0000000..1dfaf1a --- /dev/null +++ b/src/proguard/DescriptorKeepChecker.java @@ -0,0 +1,163 @@ +/* + * 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; + +import proguard.classfile.*; +import proguard.classfile.util.*; +import proguard.classfile.visitor.*; +import proguard.optimize.KeepMarker; + +import java.util.List; + + +/** + * This class checks whether classes referenced by class members that are + * marked to be kept are marked to be kept too. + * + * @author Eric Lafortune + */ +public class DescriptorKeepChecker +extends SimplifiedVisitor +implements MemberVisitor, + ClassVisitor +{ + private final ClassPool programClassPool; + private final ClassPool libraryClassPool; + private final WarningPrinter notePrinter; + + // Some fields acting as parameters for the class visitor. + private Clazz referencingClass; + private Member referencingMember; + private boolean isField; + + + /** + * Creates a new DescriptorKeepChecker. + */ + public DescriptorKeepChecker(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. Returns the number of notes printed. + */ + public void checkClassSpecifications(List keepSpecifications) + { + // Clean up any old visitor info. + programClassPool.classesAccept(new ClassCleaner()); + libraryClassPool.classesAccept(new ClassCleaner()); + + // Create a visitor for marking the seeds. + KeepMarker keepMarker = new KeepMarker(); + ClassPoolVisitor classPoolvisitor = + ClassSpecificationVisitorFactory.createClassPoolVisitor(keepSpecifications, + keepMarker, + keepMarker, + false, + true, + true); + // Mark the seeds. + programClassPool.accept(classPoolvisitor); + libraryClassPool.accept(classPoolvisitor); + + // Print out notes about argument types that are not being kept. + programClassPool.classesAccept(new AllMemberVisitor(this)); + } + + + // Implementations for MemberVisitor. + + public void visitProgramField(ProgramClass programClass, ProgramField programField) + { + if (KeepMarker.isKept(programField)) + { + referencingClass = programClass; + referencingMember = programField; + isField = true; + + // Don't check the type, because it is not required for introspection. + //programField.referencedClassesAccept(this); + } + } + + + public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod) + { + if (KeepMarker.isKept(programMethod)) + { + referencingClass = programClass; + referencingMember = programMethod; + isField = false; + + // Don't check the return type, because it is not required for + // introspection (e.g. the return type of the special Enum methods). + //programMethod.referencedClassesAccept(this); + + Clazz[] referencedClasses = programMethod.referencedClasses; + if (referencedClasses != null) + { + for (int index = 0; index < referencedClasses.length-1; index++) + { + if (referencedClasses[index] != null) + { + referencedClasses[index].accept(this); + } + } + } + } + } + + + // Implementations for ClassVisitor. + + public void visitProgramClass(ProgramClass programClass) + { + if (!KeepMarker.isKept(programClass)) + { + notePrinter.print(referencingClass.getName(), + programClass.getName(), + "Note: the configuration keeps the entry point '" + + ClassUtil.externalClassName(referencingClass.getName()) + + " { " + + (isField ? + ClassUtil.externalFullFieldDescription(0, + referencingMember.getName(referencingClass), + referencingMember.getDescriptor(referencingClass)) : + ClassUtil.externalFullMethodDescription(referencingClass.getName(), + 0, + referencingMember.getName(referencingClass), + referencingMember.getDescriptor(referencingClass))) + + "; }', but not the descriptor class '" + + ClassUtil.externalClassName(programClass.getName()) + + "'"); + } + } + + + public void visitLibraryClass(LibraryClass libraryClass) {} +} |