diff options
Diffstat (limited to 'src/proguard/optimize/peephole/ClassMerger.java')
| -rw-r--r-- | src/proguard/optimize/peephole/ClassMerger.java | 57 |
1 files changed, 46 insertions, 11 deletions
diff --git a/src/proguard/optimize/peephole/ClassMerger.java b/src/proguard/optimize/peephole/ClassMerger.java index 1e1a950..4971cab 100644 --- a/src/proguard/optimize/peephole/ClassMerger.java +++ b/src/proguard/optimize/peephole/ClassMerger.java @@ -2,7 +2,7 @@ * ProGuard -- shrinking, optimization, obfuscation, and preverification * of Java bytecode. * - * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu) + * Copyright (c) 2002-2011 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 @@ -21,6 +21,7 @@ package proguard.optimize.peephole; import proguard.classfile.*; +import proguard.classfile.constant.ClassConstant; import proguard.classfile.constant.visitor.*; import proguard.classfile.editor.*; import proguard.classfile.util.*; @@ -59,6 +60,8 @@ implements ClassVisitor, private final boolean mergeInterfacesAggressively; private final ClassVisitor extraClassVisitor; + private final MemberVisitor fieldOptimizationInfoCopier = new FieldOptimizationInfoCopier(); + /** * Creates a new ClassMerger that will merge classes into the given target @@ -151,7 +154,7 @@ implements ClassVisitor, // infinite recursion. (programClass.getAccessFlags() & ClassConstants.INTERNAL_ACC_ANNOTATTION) == 0 && - // Only merge classes if we can change the access permissioms, or + // Only merge classes if we can change the access permissions, or // if they are in the same package, or // if they are public and don't contain or invoke package visible // class members. @@ -235,11 +238,12 @@ implements ClassVisitor, targetClass.u2accessFlags = ((targetAccessFlags & sourceAccessFlags) & - (ClassConstants.INTERNAL_ACC_INTERFACE | + (ClassConstants.INTERNAL_ACC_INTERFACE | ClassConstants.INTERNAL_ACC_ABSTRACT)) | ((targetAccessFlags | sourceAccessFlags) & - (ClassConstants.INTERNAL_ACC_PUBLIC | + (ClassConstants.INTERNAL_ACC_PUBLIC | + ClassConstants.INTERNAL_ACC_SUPER | ClassConstants.INTERNAL_ACC_ANNOTATTION | ClassConstants.INTERNAL_ACC_ENUM)); @@ -260,7 +264,7 @@ implements ClassVisitor, // Copy over the class members. MemberAdder memberAdder = - new MemberAdder(targetClass); + new MemberAdder(targetClass, fieldOptimizationInfoCopier); programClass.fieldsAccept(memberAdder); programClass.methodsAccept(memberAdder); @@ -336,10 +340,8 @@ implements ClassVisitor, // Visit all superclasses and interfaces, collecting the ones that have // static initializers. clazz.hierarchyAccept(true, true, true, false, - new NamedMethodVisitor(ClassConstants.INTERNAL_METHOD_NAME_CLINIT, - ClassConstants.INTERNAL_METHOD_TYPE_INIT, - new MemberToClassVisitor( - new ClassCollector(set)))); + new StaticInitializerContainingClassFilter( + new ClassCollector(set))); return set; } @@ -368,12 +370,19 @@ implements ClassVisitor, */ private Set caughtSuperClasses(Clazz clazz) { + // Don't bother if this isn't an exception at all. + if (!clazz.extends_(ClassConstants.INTERNAL_NAME_JAVA_LANG_THROWABLE)) + { + return Collections.EMPTY_SET; + } + + // Visit all superclasses, collecting the ones that are caught + // (plus java.lang.Object, in the current implementation). Set set = new HashSet(); - // Visit all superclasses, collecting the ones that are caught. clazz.hierarchyAccept(true, true, false, false, new CaughtClassFilter( - new ClassCollector(set))); + new ClassCollector(set))); return set; } @@ -538,4 +547,30 @@ implements ClassVisitor, targetClass = clazz; } } + + + /** + * This MemberVisitor copies field optimization info from copied fields. + */ + private static class FieldOptimizationInfoCopier + extends SimplifiedVisitor + implements MemberVisitor + { + public void visitProgramField(ProgramClass programClass, ProgramField programField) + { + // Copy the optimization info from the field that was just copied. + ProgramField copiedField = (ProgramField)programField.getVisitorInfo(); + Object info = copiedField.getVisitorInfo(); + + programField.setVisitorInfo(info instanceof FieldOptimizationInfo ? + new FieldOptimizationInfo((FieldOptimizationInfo)info) : + info); + } + + + public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod) + { + // Linked methods share their optimization info. + } + } }
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