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com.sun.org.apache.bcel.internal.classfile

public final Class LineNumber

extends Object
implements Cloneable, Node
Class Inheritance
All Implemented Interfaces
com.sun.org.apache.bcel.internal.classfile.Node, java.lang.Cloneable
Imports
java.io.DataInput, .DataOutputStream, .IOException, com.sun.org.apache.bcel.internal.util.Args
This class represents a (PC offset, line number) pair, i.e., a line number in the source that corresponds to a relative address in the byte code. This is used for debugging purposes.
See Also
LineNumberTable

Field Summary

Modifier and TypeField and Description
pack-priv static final LineNumber[]
EMPTY_ARRAY

private int
lineNumber

Number in source file

private int
startPc

Program Counter (PC) corresponds to line

Constructor Summary

AccessConstructor and Description
pack-priv
LineNumber(final DataInput
Input stream
file)

Constructs object from file stream.

public
LineNumber(final int
Program Counter (PC) corresponds to
startPc, final int
line number in source file
lineNumber)

public
LineNumber(final LineNumber
the object to copy
c)

Initialize from another object.

Method Summary

Modifier and TypeMethod and Description
public void
accept(final Visitor
Visitor object
v)

Implements com.sun.org.apache.bcel.internal.classfile.Node.accept.

Called by objects that are traversing the nodes of the tree implicitly defined by the contents of a Java class.

public LineNumber
copy()

Returns: deep copy of this object

public void
dump(final DataOutputStream
Output file stream
file)

Dump line number/pc pair to file stream in binary format.

public int
getLineNumber()

Returns: Corresponding source line

public int
getStartPC()

Returns: PC in code

public void
setLineNumber(final int
the source line number
lineNumber)

public void
setStartPC(final int
the pc for this line number
startPc)

public String

Returns:

String representation
toString()

Overrides java.lang.Object.toString.

Returns a string representation of the object.

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAllwaitwaitwait

Field Detail

EMPTY_ARRAYback to summary
pack-priv static final LineNumber[] EMPTY_ARRAY
lineNumberback to summary
private int lineNumber

Number in source file

startPcback to summary
private int startPc

Program Counter (PC) corresponds to line

Constructor Detail

LineNumberback to summary
pack-priv LineNumber(final DataInput file) throws IOException

Constructs object from file stream.

Parameters
file:DataInput

Input stream

Exceptions
IOException:
if an I/O Exception occurs in readUnsignedShort
LineNumberback to summary
public LineNumber(final int startPc, final int lineNumber)
Parameters
startPc:int

Program Counter (PC) corresponds to

lineNumber:int

line number in source file

LineNumberback to summary
public LineNumber(final LineNumber c)

Initialize from another object.

Parameters
c:LineNumber

the object to copy

Method Detail

acceptback to summary
public void accept(final Visitor v)

Implements com.sun.org.apache.bcel.internal.classfile.Node.accept.

Called by objects that are traversing the nodes of the tree implicitly defined by the contents of a Java class. I.e., the hierarchy of methods, fields, attributes, etc. spawns a tree of objects.

Parameters
v:Visitor

Visitor object

Annotations
@Override
copyback to summary
public LineNumber copy()
Returns:LineNumber

deep copy of this object

dumpback to summary
public void dump(final DataOutputStream file) throws IOException

Dump line number/pc pair to file stream in binary format.

Parameters
file:DataOutputStream

Output file stream

Exceptions
IOException:
if an I/O Exception occurs in writeShort
getLineNumberback to summary
public int getLineNumber()
Returns:int

Corresponding source line

getStartPCback to summary
public int getStartPC()
Returns:int

PC in code

setLineNumberback to summary
public void setLineNumber(final int lineNumber)
Parameters
lineNumber:int

the source line number

setStartPCback to summary
public void setStartPC(final int startPc)
Parameters
startPc:int

the pc for this line number

toStringback to summary
public String toString()

Overrides java.lang.Object.toString.

Doc from java.lang.Object.toString.

Returns a string representation of the object. Satisfying this method's contract implies a non-null result must be returned.

Returns:String

String representation

Annotations
@Override