edu.wisc.cs.java
Class ExceptionInfo

java.lang.Object
  |
  +--edu.wisc.cs.java.ExceptionInfo

public class ExceptionInfo

extends java.lang.Object

This class represents an Exception_Info table. This table contains the information about ranges of bytecodes which are covered by exception handlers.

Field Summary

protected char	catch_type The type of exception handled.
protected CodeLabel	end_pc The label of the last instruction covered by this handler.
protected CodeLabel	handler_pc The label of first instruction of the exception handler.
protected CodeLabel	start_pc The label of the first instruction covered by this handler.

Constructor Summary

ExceptionInfo(java.io.DataInputStream in)
Constructs a new ExceptionInfo from data read from stream.

Method Summary

CodeLabel	getEndPC() Returns the label corresponding to the end of a try block.
CodeLabel	getHandlerPC() Returns the label corresponding to the start of a catch block.
CodeLabel	getStartPC() Returns the label corresponding to the start of a try block.
void	writeTo(java.io.DataOutputStream out, java.util.HashMap labels) Writes a ExceptionInfo table to a stream in the specified format.

Methods inherited from class java.lang.Object

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

Field Detail

start_pc

protected CodeLabel start_pc

The label of the first instruction covered by this handler.

end_pc

protected CodeLabel end_pc

The label of the last instruction covered by this handler.

handler_pc

protected CodeLabel handler_pc

The label of first instruction of the exception handler.

catch_type

protected char catch_type

The type of exception handled.

Constructor Detail

ExceptionInfo

public ExceptionInfo(java.io.DataInputStream in)
              throws java.io.IOException

Constructs a new ExceptionInfo from data read from stream.

Parameters:

in - a stream from which to read the data for the new object.

Throws:

java.io.IOException - if there is a problem reading from the stream.

Method Detail

getStartPC

public CodeLabel getStartPC()

Returns the label corresponding to the start of a try block.

Returns:

the label corresponding to the start of a try block.

getEndPC

public CodeLabel getEndPC()

Returns the label corresponding to the end of a try block.

Returns:

the label corresponding to the end of a try block.

getHandlerPC

public CodeLabel getHandlerPC()

Returns the label corresponding to the start of a catch block.

Returns:

the label corresponding to the start of a catch block.

writeTo

public void writeTo(java.io.DataOutputStream out,
                    java.util.HashMap labels)
             throws java.io.IOException

Writes a ExceptionInfo table to a stream in the specified format.

Parameters:

out - a stream to which to write the data for this table.

labels - a map comtaining the labels in the method and their pc's.

Throws:

java.io.IOException - if there is a problem writing to the stream.