org.objectweb.asm.util

Class TraceClassVisitor

java.lang.Object

org.objectweb.asm.ClassVisitor

org.objectweb.asm.util.TraceClassVisitor

public final class TraceClassVisitor
extends org.objectweb.asm.ClassVisitor

A ClassVisitor that prints the classes it visits with a Printer. This class visitor can be used in the middle of a class visitor chain to trace the class that is visited at a given point in this chain. This may be useful for debugging purposes.

When used with a Textifier, the trace printed when visiting the Hello class is the following:

 // class version 49.0 (49) // access flags 0x21 public class Hello {

 // compiled from: Hello.java

 // access flags 0x1
 public <init> ()V
 ALOAD 0
 INVOKESPECIAL java/lang/Object <init> ()V
 RETURN
 MAXSTACK = 1 MAXLOCALS = 1

 // access flags 0x9
 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");
   }
 }
 

Field Summary

Fields

Modifier and Type	Field and Description
Printer	p The printer to convert the visited class into text.

Fields inherited from class org.objectweb.asm.ClassVisitor

api, cv

Constructor Summary

Constructors

Constructor and Description
TraceClassVisitor(org.objectweb.asm.ClassVisitor classVisitor, Printer printer, java.io.PrintWriter printWriter) Constructs a new TraceClassVisitor.
TraceClassVisitor(org.objectweb.asm.ClassVisitor classVisitor, java.io.PrintWriter printWriter) Constructs a new TraceClassVisitor.
TraceClassVisitor(java.io.PrintWriter printWriter) Constructs a new TraceClassVisitor.

Method Summary

Modifier and Type	Method and Description
void	visit(int version, int access, java.lang.String name, java.lang.String signature, java.lang.String superName, java.lang.String[] interfaces)
org.objectweb.asm.AnnotationVisitor	visitAnnotation(java.lang.String descriptor, boolean visible)
void	visitAttribute(org.objectweb.asm.Attribute attribute)
void	visitEnd()
org.objectweb.asm.FieldVisitor	visitField(int access, java.lang.String name, java.lang.String descriptor, java.lang.String signature, java.lang.Object value)
void	visitInnerClass(java.lang.String name, java.lang.String outerName, java.lang.String innerName, int access)
org.objectweb.asm.MethodVisitor	visitMethod(int access, java.lang.String name, java.lang.String descriptor, java.lang.String signature, java.lang.String[] exceptions)
org.objectweb.asm.ModuleVisitor	visitModule(java.lang.String name, int flags, java.lang.String version)
void	visitOuterClass(java.lang.String owner, java.lang.String name, java.lang.String descriptor)
void	visitSource(java.lang.String file, java.lang.String debug)
org.objectweb.asm.AnnotationVisitor	visitTypeAnnotation(int typeRef, org.objectweb.asm.TypePath typePath, java.lang.String descriptor, boolean visible)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

p

public final Printer p

The printer to convert the visited class into text.

Constructor Detail

TraceClassVisitor

public TraceClassVisitor(java.io.PrintWriter printWriter)

Constructs a new TraceClassVisitor.

Parameters:

printWriter - the print writer to be used to print the class. May be null.

TraceClassVisitor

public TraceClassVisitor(org.objectweb.asm.ClassVisitor classVisitor,
                         java.io.PrintWriter printWriter)

Constructs a new TraceClassVisitor.

Parameters:

classVisitor - the class visitor to which to delegate calls. May be null.

printWriter - the print writer to be used to print the class. May be null.

TraceClassVisitor

public TraceClassVisitor(org.objectweb.asm.ClassVisitor classVisitor,
                         Printer printer,
                         java.io.PrintWriter printWriter)

Constructs a new TraceClassVisitor.

Parameters:

classVisitor - the class visitor to which to delegate calls. May be null.

printer - the printer to convert the visited class into text.

printWriter - the print writer to be used to print the class. May be null.

Method Detail

visit

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

Overrides:

visit in class org.objectweb.asm.ClassVisitor

visitSource

public void visitSource(java.lang.String file,
                        java.lang.String debug)

Overrides:

visitSource in class org.objectweb.asm.ClassVisitor

visitModule

public org.objectweb.asm.ModuleVisitor visitModule(java.lang.String name,
                                                   int flags,
                                                   java.lang.String version)

Overrides:

visitModule in class org.objectweb.asm.ClassVisitor

visitOuterClass

public void visitOuterClass(java.lang.String owner,
                            java.lang.String name,
                            java.lang.String descriptor)

Overrides:

visitOuterClass in class org.objectweb.asm.ClassVisitor

visitAnnotation

public org.objectweb.asm.AnnotationVisitor visitAnnotation(java.lang.String descriptor,
                                                           boolean visible)

Overrides:

visitAnnotation in class org.objectweb.asm.ClassVisitor

visitTypeAnnotation

public org.objectweb.asm.AnnotationVisitor visitTypeAnnotation(int typeRef,
                                                               org.objectweb.asm.TypePath typePath,
                                                               java.lang.String descriptor,
                                                               boolean visible)

Overrides:

visitTypeAnnotation in class org.objectweb.asm.ClassVisitor

visitAttribute

public void visitAttribute(org.objectweb.asm.Attribute attribute)

Overrides:

visitAttribute in class org.objectweb.asm.ClassVisitor

visitInnerClass

public void visitInnerClass(java.lang.String name,
                            java.lang.String outerName,
                            java.lang.String innerName,
                            int access)

Overrides:

visitInnerClass in class org.objectweb.asm.ClassVisitor

visitField

public org.objectweb.asm.FieldVisitor visitField(int access,
                                                 java.lang.String name,
                                                 java.lang.String descriptor,
                                                 java.lang.String signature,
                                                 java.lang.Object value)

Overrides:

visitField in class org.objectweb.asm.ClassVisitor

visitMethod

public org.objectweb.asm.MethodVisitor visitMethod(int access,
                                                   java.lang.String name,
                                                   java.lang.String descriptor,
                                                   java.lang.String signature,
                                                   java.lang.String[] exceptions)

Overrides:

visitMethod in class org.objectweb.asm.ClassVisitor

visitEnd

public void visitEnd()

Overrides:

visitEnd in class org.objectweb.asm.ClassVisitor