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org.apache.bcel.generic
Class LineNumberGen  

java.lang.Object
  org.apache.bcel.generic.LineNumberGen

All Implemented Interfaces:

java.lang.Cloneable, InstructionTargeter, java.io.Serializable

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public class LineNumberGen

extends java.lang.Object

implements InstructionTargeter, java.lang.Cloneable, java.io.Serializable

This class represents a line number within a method, i.e., give an instruction a line number corresponding to the source code line.

Version:

$Id: LineNumberGen.java 386056 2006-03-15 11:31:56Z tcurdt $

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Field Summary
private  InstructionHandle	ih
private  int	src_line

 

Constructor Summary

LineNumberGen(InstructionHandle ih, int src_line)           Create a line number.

 

Method Summary
java.lang.Object	clone()           This method may be called to create a new copy of the Object.
boolean	containsTarget(InstructionHandle ih)
InstructionHandle	getInstruction()
org.apache.bcel.classfile.LineNumber	getLineNumber()           Get LineNumber attribute .
int	getSourceLine()
void	setInstruction(InstructionHandle ih)
void	setSourceLine(int src_line)
void	updateTarget(InstructionHandle old_ih, InstructionHandle new_ih)

 

Methods inherited from class java.lang.Object

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

 

Field Detail

ih

private InstructionHandle ih

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src_line

private int src_line

Constructor Detail

LineNumberGen

public LineNumberGen(InstructionHandle ih,
                     int src_line)

Create a line number.

Method Detail

containsTarget

public boolean containsTarget(InstructionHandle ih)

Specified by:

containsTarget in interface InstructionTargeter

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updateTarget

public void updateTarget(InstructionHandle old_ih,
                         InstructionHandle new_ih)

Specified by:

updateTarget in interface InstructionTargeter

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getLineNumber

public org.apache.bcel.classfile.LineNumber getLineNumber()

Get LineNumber attribute . This relies on that the instruction list has already been dumped to byte code or or that the `setPositions' methods has been called for the instruction list.

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setInstruction

public void setInstruction(InstructionHandle ih)

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clone

public java.lang.Object clone()

Description copied from class: java.lang.Object

This method may be called to create a new copy of the Object. The typical behavior is as follows:

• o == o.clone() is false
• o.getClass() == o.clone().getClass() is true
• o.equals(o) is true

However, these are not strict requirements, and may be violated if necessary. Of the three requirements, the last is the most commonly violated, particularly if the subclass does not override Object.equals(Object)>Object.equals(Object) 55 .

If the Object you call clone() on does not implement java.lang.Cloneable (which is a placeholder interface), then a CloneNotSupportedException is thrown. Notice that Object does not implement Cloneable; this method exists as a convenience for subclasses that do.

Object's implementation of clone allocates space for the new Object using the correct class, without calling any constructors, and then fills in all of the new field values with the old field values. Thus, it is a shallow copy. However, subclasses are permitted to make a deep copy.

All array types implement Cloneable, and override this method as follows (it should never fail):

 public Object clone()
 {
   try
     {
       super.clone();
     }
   catch (CloneNotSupportedException e)
     {
       throw new InternalError(e.getMessage());
     }
 }
 

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getInstruction

public InstructionHandle getInstruction()

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setSourceLine

public void setSourceLine(int src_line)

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getSourceLine

public int getSourceLine()

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Overview  Package   Class  Use  Deprecated  Index
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