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Diffstat (limited to 'src/proguard/classfile/visitor/DynamicReturnedClassVisitor.java')
-rw-r--r-- | src/proguard/classfile/visitor/DynamicReturnedClassVisitor.java | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/src/proguard/classfile/visitor/DynamicReturnedClassVisitor.java b/src/proguard/classfile/visitor/DynamicReturnedClassVisitor.java new file mode 100644 index 0000000..f9ac3cb --- /dev/null +++ b/src/proguard/classfile/visitor/DynamicReturnedClassVisitor.java @@ -0,0 +1,68 @@ +/* + * 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.classfile.visitor; + +import proguard.classfile.Clazz; +import proguard.classfile.constant.*; +import proguard.classfile.constant.visitor.ConstantVisitor; +import proguard.classfile.util.*; + +/** + * This ConstantVisitor lets a given ClassVisitor visit all the referenced + * classes that are returned by the invoke dynamic constants that it visits. + * + * @author Eric Lafortune + */ +public class DynamicReturnedClassVisitor +extends SimplifiedVisitor +implements ConstantVisitor +{ + protected final ClassVisitor classVisitor; + + + public DynamicReturnedClassVisitor(ClassVisitor classVisitor) + { + this.classVisitor = classVisitor; + } + + + // Implementations for ConstantVisitor. + + public void visitAnyConstant(Clazz clazz, Constant constant) {} + + + public void visitInvokeDynamicConstant(Clazz clazz, InvokeDynamicConstant invokeDynamicConstant) + { + // Is the method returning a class type? + Clazz[] referencedClasses = invokeDynamicConstant.referencedClasses; + if (referencedClasses != null && + referencedClasses.length > 0 && + ClassUtil.isInternalClassType(ClassUtil.internalMethodReturnType(invokeDynamicConstant.getType(clazz)))) + { + // Let the visitor visit the return type class, if any. + Clazz referencedClass = referencedClasses[referencedClasses.length - 1]; + if (referencedClass != null) + { + referencedClass.accept(classVisitor); + } + } + } +} |