com.techtrader.modules.tools.bytecode
Class LineNumberTableAttribute

java.lang.Object
  |
  +--com.techtrader.modules.tools.bytecode.BCEntity
        |
        +--com.techtrader.modules.tools.bytecode.Attribute
              |
              +--com.techtrader.modules.tools.bytecode.LineNumberTableAttribute

public class LineNumberTableAttribute

extends Attribute

A LineNumberTableAttributs holds a table of line number to program counter mappings, so that errors can be reported with the correct line number. TODO: Allow high-level manipulation of the line numbers.

Author:

Abe White

Fields inherited from class com.techtrader.modules.tools.bytecode.Attribute

_nameIndex, _owner

Constructor Summary

LineNumberTableAttribute(int nameIndex, BCEntity owner)
Protected constructor.

Method Summary

void	acceptVisit(BCVisitor visit) Accept a visit from a BCVisitor, calling the appropriate methods to notify the visitor that it has entered this entity, and to provide it with the proper callbacks for each sub-entity owned by this object.
LineNumber	addLineNumber() Add a new line number to this table.
void	clearLineNumbers() Clear the line numbers.
protected void	copy(Attribute other) Copy the information from the given attribute to this one.
int	getLength() Return the length of the .class representation of this attribute, in bytes.
LineNumber[]	getLineNumbers() Get the line numbers held in this table.
LineNumber	importLineNumber(LineNumber ln) Import a line number from another method.
void	importLineNumbers(LineNumberTableAttribute lns) Import all line numbers from another method.
protected void	readData(DataInput in, int length) Should be overridden by subclasses to read their internal data from the given stream, up to length bytes, excluding the name index.
boolean	removeLineNumber(LineNumber ln) Remove the given LineNumber.
protected void	writeData(DataOutput out, int length) Should be overridden by subclasses to write their internal data to the given stream, up to length bytes, excluding the name index.

Methods inherited from class com.techtrader.modules.tools.bytecode.Attribute

createAttribute, getName, getNameIndex, getOwner, getPool, invalidate

Methods inherited from class com.techtrader.modules.tools.bytecode.BCEntity

addAttribute, clearAttributes, getAttribute, getAttributes, getAttributes, importAttribute, importAttributes, readAttributes, removeAttribute, removeAttribute, visitAttributes, writeAttributes

Methods inherited from class java.lang.Object

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

Constructor Detail

LineNumberTableAttribute

public LineNumberTableAttribute(int nameIndex,
                                BCEntity owner)

Protected constructor.

Method Detail

getLineNumbers

public LineNumber[] getLineNumbers()

Get the line numbers held in this table.

importLineNumber

public LineNumber importLineNumber(LineNumber ln)

Import a line number from another method.

importLineNumbers

public void importLineNumbers(LineNumberTableAttribute lns)

Import all line numbers from another method.

addLineNumber

public LineNumber addLineNumber()

Add a new line number to this table.

Returns:

the index into the list at which the line number was added

clearLineNumbers

public void clearLineNumbers()

Clear the line numbers.

removeLineNumber

public boolean removeLineNumber(LineNumber ln)

Remove the given LineNumber.

getLength

public int getLength()

Description copied from class: Attribute

Return the length of the .class representation of this attribute, in bytes.

Overrides:

getLength in class Attribute

copy

protected void copy(Attribute other)

Description copied from class: Attribute

Copy the information from the given attribute to this one.

Overrides:

copy in class Attribute

readData

protected void readData(DataInput in,
                        int length)
                 throws IOException

Description copied from class: Attribute

Should be overridden by subclasses to read their internal data from the given stream, up to length bytes, excluding the name index.

Overrides:

readData in class Attribute

writeData

protected void writeData(DataOutput out,
                         int length)
                  throws IOException

Description copied from class: Attribute

Should be overridden by subclasses to write their internal data to the given stream, up to length bytes, excluding the name index.

Overrides:

writeData in class Attribute

acceptVisit

public void acceptVisit(BCVisitor visit)

Description copied from interface: VisitAcceptor

Accept a visit from a BCVisitor, calling the appropriate methods to notify the visitor that it has entered this entity, and to provide it with the proper callbacks for each sub-entity owned by this object.