ClassVisitor.java

package gr.gousiosg.callgraph;

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 {

    JavaClass clazz;
    private ConstantPoolGen constants;

    public ClassVisitor(JavaClass jc) {
        clazz = jc;
        constants = new ConstantPoolGen(clazz.getConstantPool());
    }

    public void visitJavaClass(JavaClass jc) {
        Method[] methods = jc.getMethods();
        for (int i = 0; i < methods.length; i++)
            methods[i].accept(this);
    }

    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);
    }
}