程序包 org.beetl.ow2.asm

类 ClassVisitor

java.lang.Object
org.beetl.ow2.asm.ClassVisitor
直接已知子类:
CheckClassAdapter, ClassConstantsCollector, ClassNode, ClassWriter, RemappingClassAdapter, SAXClassAdapter, SerialVersionUIDAdder, StaticInitMerger, TraceClassVisitor
public abstract class ClassVisitor extends Object
A visitor to visit a Java class. The methods of this class must be called in the following order: visit [ visitSource ] [ visitOuterClass ] ( visitAnnotation | visitTypeAnnotation | visitAttribute )* ( visitInnerClass | visitField | visitMethod )* visitEnd.
作者:
Eric Bruneton

  • 字段详细资料

    • api

      protected final int api
      The ASM API version implemented by this visitor. The value of this field must be one of Opcodes.ASM4 or Opcodes.ASM5.

    • cv

      protected ClassVisitor cv
      The class visitor to which this visitor must delegate method calls. May be null.

  • 构造器详细资料

    • ClassVisitor

      public ClassVisitor(int api)
      Constructs a new ClassVisitor.
      参数:
      api - the ASM API version implemented by this visitor. Must be one of Opcodes.ASM4 or Opcodes.ASM5.

    • ClassVisitor

      public ClassVisitor(int api, ClassVisitor cv)
      Constructs a new ClassVisitor.
      参数:
      api - the ASM API version implemented by this visitor. Must be one of Opcodes.ASM4 or Opcodes.ASM5.
      cv - the class visitor to which this visitor must delegate method calls. May be null.

  • 方法详细资料

    • visit

      public void visit(int version, int access, String name, String signature, String superName, String[] interfaces)
      Visits the header of the class.
      参数:
      version - the class version.
      access - the class's access flags (see Opcodes). This parameter also indicates if the class is deprecated.
      name - the internal className of the class (see getInternalName).
      signature - the signature of this class. May be null if the class is not a generic one, and does not extend or implement generic classes or interfaces.
      superName - the internal of className of the super class (see getInternalName). For interfaces, the super class is Object. May be null, but only for the Object class.
      interfaces - the internal names of the class's interfaces (see getInternalName). May be null.

    • visitSource

      public void visitSource(String source, String debug)
      Visits the srccode of the class.
      参数:
      source - the className of the srccode file from which the class was compiled. May be null.
      debug - additional debug information to compute the correspondance between srccode and compiled elements of the class. May be null.

    • visitOuterClass

      public void visitOuterClass(String owner, String name, String desc)
      Visits the enclosing class of the class. This method must be called only if the class has an enclosing class.
      参数:
      owner - internal className of the enclosing class of the class.
      name - the className of the method that contains the class, or null if the class is not enclosed in a method of its enclosing class.
      desc - the descriptor of the method that contains the class, or null if the class is not enclosed in a method of its enclosing class.

    • visitAnnotation

      public AnnotationVisitor visitAnnotation(String desc, boolean visible)
      Visits an annotation of the class.
      参数:
      desc - the class descriptor of the annotation class.
      visible - true if the annotation is visible at runtime.
      返回:
      a visitor to visit the annotation values, or null if this visitor is not interested in visiting this annotation.

    • visitTypeAnnotation

      public AnnotationVisitor visitTypeAnnotation(int typeRef, TypePath typePath, String desc, boolean visible)
      Visits an annotation on a type in the class signature.
      参数:
      typeRef - a reference to the annotated type. The sort of this type reference must be CLASS_TYPE_PARAMETER, CLASS_TYPE_PARAMETER_BOUND or CLASS_EXTENDS. See TypeReference.
      typePath - the path to the annotated type argument, wildcard bound, array element type, or static inner type within 'typeRef'. May be null if the annotation targets 'typeRef' as a whole.
      desc - the class descriptor of the annotation class.
      visible - true if the annotation is visible at runtime.
      返回:
      a visitor to visit the annotation values, or null if this visitor is not interested in visiting this annotation.

    • visitAttribute

      public void visitAttribute(Attribute attr)
      Visits a non standard attribute of the class.
      参数:
      attr - an attribute.

    • visitInnerClass

      public void visitInnerClass(String name, String outerName, String innerName, int access)
      Visits information about an inner class. This inner class is not necessarily a member of the class being visited.
      参数:
      name - the internal className of an inner class (see getInternalName).
      outerName - the internal className of the class to which the inner class belongs (see getInternalName). May be null for not member classes.
      innerName - the (simple) className of the inner class inside its enclosing class. May be null for anonymous inner classes.
      access - the access flags of the inner class as originally declared in the enclosing class.

    • visitField

      public FieldVisitor visitField(int access, String name, String desc, String signature, Object value)
      Visits a field of the class.
      参数:
      access - the field's access flags (see Opcodes). This parameter also indicates if the field is synthetic and/or deprecated.
      name - the field's className.
      desc - the field's descriptor (see Type).
      signature - the field's signature. May be null if the field's type does not use generic types.
      value - the field's initial value. This parameter, which may be null if the field does not have an initial value, must be an Integer, a Float, a Long, a Double or a String (for int, float, long or String fields respectively). This parameter is only used for static fields. Its value is ignored for non static fields, which must be initialized through bytecode instructions in constructors or methods.
      返回:
      a visitor to visit field annotations and attributes, or null if this class visitor is not interested in visiting these annotations and attributes.

    • visitMethod

      public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions)
      Visits a method of the class. This method must return a new MethodVisitor instance (or null) each time it is called, i.e., it should not return a previously returned visitor.
      参数:
      access - the method's access flags (see Opcodes). This parameter also indicates if the method is synthetic and/or deprecated.
      name - the method's className.
      desc - the method's descriptor (see Type).
      signature - the method's signature. May be null if the method parameters, return type and exceptions do not use generic types.
      exceptions - the internal names of the method's exception classes (see getInternalName). May be null.
      返回:
      an object to visit the byte code of the method, or null if this class visitor is not interested in visiting the code of this method.

    • visitEnd

      public void visitEnd()
      Visits the end of the class. This method, which is the last one to be called, is used to inform the visitor that all the fields and methods of the class have been visited.