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Java Source Code / Java Documentation » Rule Engine » drolls Rule Engine » org.drools.asm.util 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.drools.asm.util.AbstractVisitor
      org.drools.asm.util.TraceAbstractVisitor
         org.drools.asm.util.TraceClassVisitor

TraceClassVisitor
public class TraceClassVisitor extends TraceAbstractVisitor implements ClassVisitor(Code)
A ClassVisitor that prints a disassembled view of the classes it visits. This class visitor can be used alone (see the TraceClassVisitor.main main method) to disassemble a class. It can also be used in the middle of class visitor chain to trace the class that is visited at a given point in this chain. This may be uselful for debugging purposes.

The trace printed when visiting the Hello class is the following:

 // class version 49.0 (49)
 // access flags 33
 public class Hello {
 // compiled from: Hello.java
 // access flags 1
 public <init> ()V
 ALOAD 0
 INVOKESPECIAL java/lang/Object <init> ()V
 RETURN
 MAXSTACK = 1
 MAXLOCALS = 1
 // access flags 9
 public static main ([Ljava/lang/String;)V
 GETSTATIC java/lang/System out Ljava/io/PrintStream;
 LDC "hello"
 INVOKEVIRTUAL java/io/PrintStream println (Ljava/lang/String;)V
 RETURN
 MAXSTACK = 2
 MAXLOCALS = 1
 }
 
where Hello is defined by:

 public class Hello {
 public static void main(String[] args) {
 System.out.println("hello");
 }
 }
 

author:
   Eric Bruneton
author:
   Eugene Kuleshov


Field Summary
final protected  ClassVisitorcv
     The ClassVisitor to which this visitor delegates calls.
final protected  PrintWriterpw
     The print writer to be used to print the class.

Constructor Summary
public  TraceClassVisitor(PrintWriter pw)
     Constructs a new TraceClassVisitor .
public  TraceClassVisitor(ClassVisitor cv, PrintWriter pw)
     Constructs a new TraceClassVisitor .

Method Summary
protected  TraceFieldVisitorcreateTraceFieldVisitor()
    
protected  TraceMethodVisitorcreateTraceMethodVisitor()
    
public static  voidmain(String[] args)
     Prints a disassembled view of the given class to the standard output.
public  voidvisit(int version, int access, String name, String signature, String superName, String[] interfaces)
    
public  AnnotationVisitorvisitAnnotation(String desc, boolean visible)
    
public  voidvisitAttribute(Attribute attr)
    
public  voidvisitEnd()
    
public  FieldVisitorvisitField(int access, String name, String desc, String signature, Object value)
    
public  voidvisitInnerClass(String name, String outerName, String innerName, int access)
    
public  MethodVisitorvisitMethod(int access, String name, String desc, String signature, String[] exceptions)
    
public  voidvisitOuterClass(String owner, String name, String desc)
    
public  voidvisitSource(String file, String debug)
    

Field Detail
cv
final protected ClassVisitor cv(Code)
The ClassVisitor to which this visitor delegates calls. May be null.



pw
final protected PrintWriter pw(Code)
The print writer to be used to print the class.




Constructor Detail
TraceClassVisitor
public TraceClassVisitor(PrintWriter pw)(Code)
Constructs a new TraceClassVisitor .
Parameters:
  pw - the print writer to be used to print the class.



TraceClassVisitor
public TraceClassVisitor(ClassVisitor cv, PrintWriter pw)(Code)
Constructs a new TraceClassVisitor .
Parameters:
  cv - the ClassVisitor to which this visitor delegates calls.May be null.
Parameters:
  pw - the print writer to be used to print the class.




Method Detail
createTraceFieldVisitor
protected TraceFieldVisitor createTraceFieldVisitor()(Code)



createTraceMethodVisitor
protected TraceMethodVisitor createTraceMethodVisitor()(Code)



main
public static void main(String[] args) throws Exception(Code)
Prints a disassembled view of the given class to the standard output.

Usage: TraceClassVisitor [-debug] <fully qualified class name or class file name >
Parameters:
  args - the command line arguments.
throws:
  Exception - if the class cannot be found, or if an IO exceptionoccurs.




visit
public void visit(int version, int access, String name, String signature, String superName, String[] interfaces)(Code)



visitAnnotation
public AnnotationVisitor visitAnnotation(String desc, boolean visible)(Code)



visitAttribute
public void visitAttribute(Attribute attr)(Code)



visitEnd
public void visitEnd()(Code)



visitField
public FieldVisitor visitField(int access, String name, String desc, String signature, Object value)(Code)



visitInnerClass
public void visitInnerClass(String name, String outerName, String innerName, int access)(Code)



visitMethod
public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions)(Code)



visitOuterClass
public void visitOuterClass(String owner, String name, String desc)(Code)



visitSource
public void visitSource(String file, String debug)(Code)



Fields inherited from org.drools.asm.util.TraceAbstractVisitor
final public static int CLASS_DECLARATION(Code)(Java Doc)
final public static int CLASS_SIGNATURE(Code)(Java Doc)
final public static int FIELD_DESCRIPTOR(Code)(Java Doc)
final public static int FIELD_SIGNATURE(Code)(Java Doc)
final public static int INTERNAL_NAME(Code)(Java Doc)
final public static int METHOD_DESCRIPTOR(Code)(Java Doc)
final public static int METHOD_SIGNATURE(Code)(Java Doc)
final public static int PARAMETERS_DECLARATION(Code)(Java Doc)
final public static int TYPE_DECLARATION(Code)(Java Doc)
protected String tab(Code)(Java Doc)

Methods inherited from org.drools.asm.util.TraceAbstractVisitor
protected void appendDescriptor(int type, String desc)(Code)(Java Doc)
protected TraceAnnotationVisitor createTraceAnnotationVisitor()(Code)(Java Doc)
public AnnotationVisitor visitAnnotation(String desc, boolean visible)(Code)(Java Doc)
public void visitAttribute(Attribute attr)(Code)(Java Doc)
public void visitEnd()(Code)(Java Doc)

Fields inherited from org.drools.asm.util.AbstractVisitor
final public static String[] OPCODES(Code)(Java Doc)
final public static String[] TYPES(Code)(Java Doc)
final protected StringBuffer buf(Code)(Java Doc)
final public List text(Code)(Java Doc)

Methods inherited from org.drools.asm.util.AbstractVisitor
public static void appendString(StringBuffer buf, String s)(Code)(Java Doc)
public static Attribute[] getDefaultAttributes()(Code)(Java Doc)
public List getText()(Code)(Java Doc)
void printList(PrintWriter pw, List l)(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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