Package org.objectweb.asm.util

Class 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 Description
      Printer p
      The printer to convert the visited class into text.

      • Fields inherited from class org.objectweb.asm.ClassVisitor

        api, cv

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method 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 visitNestHost​(java.lang.String nestHost)  
      void visitNestMember​(java.lang.String nestMember)  
      void visitOuterClass​(java.lang.String owner, java.lang.String name, java.lang.String descriptor)  
      void visitPermittedSubclass​(java.lang.String permittedSubclass)  
      org.objectweb.asm.RecordComponentVisitor visitRecordComponent​(java.lang.String name, java.lang.String descriptor, java.lang.String signature)  
      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

      • visitNestHost

        public void visitNestHost​(java.lang.String nestHost)
        Overrides:
        visitNestHost 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

      • visitNestMember

        public void visitNestMember​(java.lang.String nestMember)
        Overrides:
        visitNestMember in class org.objectweb.asm.ClassVisitor

      • visitPermittedSubclass

        public void visitPermittedSubclass​(java.lang.String permittedSubclass)
        Overrides:
        visitPermittedSubclass 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

      • visitRecordComponent

        public org.objectweb.asm.RecordComponentVisitor visitRecordComponent​(java.lang.String name,
                                                                     java.lang.String descriptor,
                                                                     java.lang.String signature)
        Overrides:
        visitRecordComponent 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