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+/*
+ * 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.classfile.visitor;
+
+import proguard.classfile.*;
+import proguard.classfile.attribute.CodeAttribute;
+import proguard.classfile.constant.*;
+import proguard.classfile.constant.visitor.ConstantVisitor;
+import proguard.classfile.instruction.*;
+import proguard.classfile.instruction.visitor.InstructionVisitor;
+import proguard.classfile.util.SimplifiedVisitor;
+
+
+/**
+ * This InstructionVisitor lets a given <code>ClassVisitor</code> visit all
+ * classes involved in any <code>.class</code> constructs that it visits.
+ * <p>
+ * Note that before JDK 1.5, <code>.class</code> constructs are actually
+ * compiled differently, using <code>Class.forName</code> constructs.
+ *
+ * @see ClassForNameClassVisitor
+ *
+ * @author Eric Lafortune
+ */
+public class DotClassClassVisitor
+extends SimplifiedVisitor
+implements InstructionVisitor,
+ ConstantVisitor
+{
+ private final ClassVisitor classVisitor;
+
+
+ /**
+ * Creates a new ClassHierarchyTraveler.
+ * @param classVisitor the <code>ClassVisitor</code> to which visits will
+ * be delegated.
+ */
+ public DotClassClassVisitor(ClassVisitor classVisitor)
+ {
+ this.classVisitor = classVisitor;
+ }
+
+
+ // Implementations for InstructionVisitor.
+
+ public void visitAnyInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, Instruction instruction) {}
+
+
+ public void visitConstantInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, ConstantInstruction constantInstruction)
+ {
+ byte opcode = constantInstruction.opcode;
+
+ // Could this instruction be a .class construct?
+ if (opcode == InstructionConstants.OP_LDC ||
+ opcode == InstructionConstants.OP_LDC_W)
+ {
+ clazz.constantPoolEntryAccept(constantInstruction.constantIndex,
+ this);
+ }
+ }
+
+
+ // Implementations for ConstantVisitor.
+
+ public void visitAnyConstant(Clazz clazz, Constant constant) {}
+
+
+ public void visitClassConstant(Clazz clazz, ClassConstant classConstant)
+ {
+ // Visit the referenced class from the .class construct.
+ classConstant.referencedClassAccept(classVisitor);
+ }
+}