org.gjt.jclasslib.structures.attributes

Class LineNumberTableEntry

java.lang.Object

org.gjt.jclasslib.structures.AbstractStructure

org.gjt.jclasslib.structures.attributes.LineNumberTableEntry

public class LineNumberTableEntry
extends AbstractStructure

Describes an entry in a LineNumberTable attribute structure.

Version:

$Revision: 1.4 $ $Date: 2004-12-28 13:04:32 $

Author:

Ingo Kegel, Vitor Carreira

Field Summary

Fields

Modifier and Type	Field and Description
static int	LENGTH Length in bytes of a line number association.

Fields inherited from class org.gjt.jclasslib.structures.AbstractStructure

classFile, debug, SYSTEM_PROPERTY_DEBUG

Constructor Summary

Constructors

Constructor and Description
LineNumberTableEntry()

Method Summary

Modifier and Type	Method and Description
static LineNumberTableEntry	create(DataInput in, ClassFile classFile) Factory method for creating LineNumberTableEntry structures.
protected void	debug(String message) Utility method for derived structures.
int	getLineNumber() Get the line number of this line number association.
int	getStartPc() Get the start_pc of this line number association.
protected String	printAccessFlagsVerbose(int accessFlags) Utility method for derived structures.
void	read(DataInput in) Read this structure from the given DataInput.
void	setLineNumber(int lineNumber) Set the line number of this line number association.
void	setStartPc(int startPc) Set the start_pc of this line number association.
void	write(DataOutput out) Write this structure to the given DataOutput.

Methods inherited from class org.gjt.jclasslib.structures.AbstractStructure

getClassFile, getDebug, getLength, printAccessFlags, printAccessFlagsVerbose, printBytes, setClassFile, setDebug

Methods inherited from class java.lang.Object

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

Field Detail

LENGTH

public static final int LENGTH

Length in bytes of a line number association.

See Also:

Constant Field Values

Constructor Detail

LineNumberTableEntry

public LineNumberTableEntry()

Method Detail

create

public static LineNumberTableEntry create(DataInput in,
                                          ClassFile classFile)
                                   throws InvalidByteCodeException,
                                          IOException

Factory method for creating LineNumberTableEntry structures.

Parameters:

in - the DataInput from which to read the LineNumberTableEntry structure

classFile - the parent class file of the structure to be created

Returns:

the new LineNumberTableEntry structure

Throws:

InvalidByteCodeException - if the byte code is invalid

IOException - if an exception occurs with the DataInput

getStartPc

public int getStartPc()

Get the start_pc of this line number association.

Returns:

the start_pc

setStartPc

public void setStartPc(int startPc)

Set the start_pc of this line number association.

Parameters:

startPc - the start_pc

getLineNumber

public int getLineNumber()

Get the line number of this line number association.

Returns:

the line number

setLineNumber

public void setLineNumber(int lineNumber)

Set the line number of this line number association.

Parameters:

lineNumber - the line number

read

public void read(DataInput in)
          throws InvalidByteCodeException,
                 IOException

Description copied from class: AbstractStructure

Read this structure from the given DataInput.

Excpects DataInput to be in JVM class file format and just before a structure of this kind. No look ahead parsing since the class file format is deterministic.

Overrides:

read in class AbstractStructure

Parameters:

in - the DataInput from which to read

Throws:

InvalidByteCodeException - if the byte code is invalid

IOException - if an exception occurs with the DataInput

write

public void write(DataOutput out)
           throws InvalidByteCodeException,
                  IOException

Description copied from class: AbstractStructure

Write this structure to the given DataOutput.

The written bytes are in JVM class file format.

Overrides:

write in class AbstractStructure

Parameters:

out - the DataOutput to which to write

Throws:

InvalidByteCodeException - if the structure is internally inconsistent

IOException - if an exception occurs with the DataOutput

debug

protected void debug(String message)

Description copied from class: AbstractStructure

Utility method for derived structures. Dump a specific debug message.

Overrides:

debug in class AbstractStructure

Parameters:

message - the debug message

printAccessFlagsVerbose

protected String printAccessFlagsVerbose(int accessFlags)

Description copied from class: AbstractStructure

Utility method for derived structures. Print an access flag as a space separated list of verbose java access modifiers.

Specified by:

printAccessFlagsVerbose in class AbstractStructure

Parameters:

accessFlags - the unsigned short value to print as a hex string

Returns:

the hex string