/*
* Copyright (c) 2011 - Georgios Gousios <gousiosg@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package gr.gousiosg.javacg.stat;
import org.apache.bcel.classfile.Constant;
import org.apache.bcel.classfile.ConstantPool;
import org.apache.bcel.classfile.EmptyVisitor;
import org.apache.bcel.classfile.JavaClass;
import org.apache.bcel.classfile.Method;
import org.apache.bcel.generic.ConstantPoolGen;
import org.apache.bcel.generic.MethodGen;
/**
* The simplest of class visitors, invokes the method visitor class for each
* method found.
*/
public class ClassVisitor extends EmptyVisitor {
private JavaClass clazz;
private ConstantPoolGen constants;
private String classReferenceFormat;
public ClassVisitor(JavaClass jc) {
clazz = jc;
constants = new ConstantPoolGen(clazz.getConstantPool());
classReferenceFormat = "C:" + clazz.getClassName() + " %s";
}
public void visitJavaClass(JavaClass jc) {
jc.getConstantPool().accept(this);
Method[] methods = jc.getMethods();
for (int i = 0; i < methods.length; i++)
methods[i].accept(this);
}
public void visitConstantPool(ConstantPool constantPool) {
for (int i = 0; i < constantPool.getLength(); i++) {
Constant constant = constantPool.getConstant(i);
if (constant == null)
continue;
if (constant.getTag() == 7) {
String referencedClass =
constantPool.constantToString(constant);
System.out.println(String.format(classReferenceFormat,
referencedClass));
}
}
}
public void visitMethod(Method method) {
MethodGen mg = new MethodGen(method, clazz.getClassName(), constants);
MethodVisitor visitor = new MethodVisitor(mg, clazz);
visitor.start();
}
public void start() {
visitJavaClass(clazz);
}
}