Package org.springframework.asm

Class Label

java.lang.Object
org.springframework.asm.Label
public class Label extends Object
A position in the bytecode of a method. Labels are used for jump, goto, and switch instructions, and for try catch blocks. A label designates the instruction that is just after. Note however that there can be other elements between a label and the instruction it designates (such as other labels, stack map frames, line numbers, etc.).
Author:
Eric Bruneton

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    Object
    info
    A user managed state associated with this label.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Label()
    Constructs a new label.

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    getOffset()
    Returns the bytecode offset corresponding to this label.
    String
    toString()
    Returns a string representation of this label.

    Methods inherited from class java.lang.Object

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

  • Field Details

    • info

      public Object info
      A user managed state associated with this label. Warning: this field is used by the ASM tree package. In order to use it with the ASM tree package you must override the getLabelNode method in MethodNode.

  • Constructor Details

    • Label

      public Label()
      Constructs a new label.

  • Method Details

    • getOffset

      public int getOffset()
      Returns the bytecode offset corresponding to this label. This offset is computed from the start of the method's bytecode. This method is intended for Attribute sub classes, and is normally not needed by class generators or adapters.
      Returns:
      the bytecode offset corresponding to this label.
      Throws:
      IllegalStateException - if this label is not resolved yet.

    • toString

      public String toString()
      Returns a string representation of this label.
      Overrides:
      toString in class Object
      Returns:
      a string representation of this label.