Class LineNumberTable

java.lang.Object

EDU.purdue.cs.bloat.file.Attribute

EDU.purdue.cs.bloat.file.LineNumberTable

public class LineNumberTable
extends Attribute

LineNumberTable is an attribute of a code attribute. A LineNumberTable stores information that relates indices into the code array (instructions) to the lines of code in the source file from which they were compiled. This optional attribute is used with debuggers (duh) and consists of an array of reflect.LineNumberDebugInfo.

See Also:

• Code
• LineNumberDebugInfo

Field Summary

Fields inherited from class Attribute

length, nameIndex

Constructor Summary

Constructors

Constructor	Description
LineNumberTable(DataInputStream in, int nameIndex, int length)	Constructor.

Method Summary

Modifier and Type	Method	Description
Object	clone()
int	length()	Get the length of the attribute.
LineNumberDebugInfo[]	lineNumbers()	Get the line number debug info for the code.
void	setLineNumbers(LineNumberDebugInfo[] lineNumbers)	Set the line number debug info for the code.
String	toString()	Returns a string representation of the attribute.
void	writeData(DataOutputStream out)	Write the attribute to a data stream.

Methods inherited from class Attribute

nameIndex

Methods inherited from class Object

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

Constructor Details

LineNumberTable

public LineNumberTable(DataInputStream in,
 int nameIndex,
 int length)
                throws IOException

Constructor. Create an attribute from a data stream.

Parameters:

in - The data stream of the class file.

nameIndex - The index into the constant pool of the name of the attribute.

length - The length of the attribute, excluding the header.

Throws:

IOException - If an error occurs while reading.

Method Details

lineNumbers

public LineNumberDebugInfo[] lineNumbers()

Get the line number debug info for the code.

Returns:

The line number debug info for the code.

setLineNumbers

public void setLineNumbers(LineNumberDebugInfo[] lineNumbers)

Set the line number debug info for the code.

Parameters:

lineNumbers - The line number debug info for the code.

length

public int length()

Get the length of the attribute.

Overrides:

length in class Attribute

Returns:

The length of the attribute.

toString

public String toString()

Description copied from class: Attribute

Returns a string representation of the attribute.

Overrides:

toString in class Attribute

writeData

public void writeData(DataOutputStream out)
               throws IOException

Write the attribute to a data stream.

Specified by:

writeData in class Attribute

Parameters:

out - The data stream of the class file.

Throws:

IOException - If an error occurs while writing.

clone

public Object clone()

Overrides:

clone in class Attribute