cn.taketoday.context.asm

类 Label

java.lang.Object

cn.taketoday.context.asm.Label

public class Label
extends java.lang.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.).

作者:

Eric Bruneton

字段概要

字段

限定符和类型	字段和说明
java.lang.Object	info A user managed state associated with this label.

构造器概要

构造器

构造器和说明
Label() Constructs a new label.

方法概要

限定符和类型	方法和说明
int	getOffset() Returns the bytecode offset corresponding to this label.
java.lang.String	toString() Returns a string representation of this label.

从类继承的方法 java.lang.Object

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

字段详细资料

info

public java.lang.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.

构造器详细资料

Label

public Label()

Constructs a new label.

方法详细资料

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.

返回:

the bytecode offset corresponding to this label.

抛出:

java.lang.IllegalStateException - if this label is not resolved yet.

toString

public java.lang.String toString()

Returns a string representation of this label.

覆盖:

toString 在类中 java.lang.Object

返回:

a string representation of this label.