org.multijava.util.classfile
Class HandlerInfo

java.lang.Object
  org.multijava.util.classfile.HandlerInfo

All Implemented Interfaces:

AccessorContainer

public class HandlerInfo

extends Object

implements AccessorContainer

This class represents a protected ("try") portion of block with an handler (catch) for a specified type of exception

Field Summary
private  InstructionAccessor	end
private  InstructionAccessor	handler
private  InstructionAccessor	start
private  ClassConstant	thrown

 

Constructor Summary

HandlerInfo(DataInput in, ConstantPool cp, Instruction[] insns)           Constructs a new exception handler info entry from a class file

HandlerInfo(InstructionAccessor start, InstructionAccessor end, InstructionAccessor handler, String thrown)           Constructs a new exception handler info entry

 

Method Summary
InstructionAccessor	getEnd()
InstructionAccessor	getHandler()
InstructionAccessor	getStart()
String	getThrown()
(package private)  void	resolveConstants(ConstantPool cp)           Insert or check location of constant value on constant pool
void	setEnd(InstructionAccessor end)
void	setHandler(InstructionAccessor handler)
void	setStart(InstructionAccessor start)
void	transformAccessors(AccessorTransformer transformer)           Transforms targets (deferences to actual instructions).
(package private)  void	write(ConstantPool cp, DataOutput out)           Write this class into the the file (out) getting data position from the constant pool

 

Methods inherited from class java.lang.Object

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

 

Field Detail

start

private InstructionAccessor start

end

private InstructionAccessor end

handler

private InstructionAccessor handler

thrown

private ClassConstant thrown

HandlerInfo

public HandlerInfo(InstructionAccessor start,
                   InstructionAccessor end,
                   InstructionAccessor handler,
                   String thrown)

Constructs a new exception handler info entry

Parameters:

start - the beginning of the checked area (inclusive)

end - the end of the checked area (inclusive !)

handler - the entrypoint into the exception handling routine.

thrown - the exceptions handled by this routine

HandlerInfo

public HandlerInfo(DataInput in,
                   ConstantPool cp,
                   Instruction[] insns)
            throws IOException

Constructs a new exception handler info entry from a class file

Parameters:

in - the stream to read from

cp - the constant pool

insns - (sparse) array of instructions

Throws:

IOException - an io problem has occured

transformAccessors

public void transformAccessors(AccessorTransformer transformer)
                        throws BadAccessorException

Transforms targets (deferences to actual instructions).

Specified by:

transformAccessors in interface AccessorContainer

Parameters:

transformer - the transformer used to transform accessors

Throws:

BadAccessorException

setStart

public void setStart(InstructionAccessor start)

getStart

public InstructionAccessor getStart()

setEnd

public void setEnd(InstructionAccessor end)

getEnd

public InstructionAccessor getEnd()

setHandler

public void setHandler(InstructionAccessor handler)

getHandler

public InstructionAccessor getHandler()

getThrown

public String getThrown()

resolveConstants

void resolveConstants(ConstantPool cp)

Insert or check location of constant value on constant pool

Parameters:

cp - the constant pool for this class

write

void write(ConstantPool cp,
           DataOutput out)
     throws IOException

Write this class into the the file (out) getting data position from the constant pool

Parameters:

cp - the constant pool that contain all data

out - the file where to write this object info

Throws:

IOException - an io problem has occured