org.jikesrvm.classloader
Class ExceptionHandlerMap

java.lang.Object
  org.jikesrvm.classloader.ExceptionHandlerMap

public final class ExceptionHandlerMap
extends Object

A java method's try/catch/finally information.

startPCs

private int[] startPCs

bytecode offset at which i-th try block begins 0-indexed from start of method's bytecodes[]

endPCs

private int[] endPCs

bytecode offset at which i-th try block ends (exclusive) 0-indexed from start of method's bytecodes[]

handlerPCs

private int[] handlerPCs

bytecode offset at which exception handler for i-th try block begins 0-indexed from start of method's bytecodes[]

exceptionTypes

private final TypeReference[] exceptionTypes

exception type for which i-th handler is to be invoked - something like "java/lang/IOException". NOTE: When constructing the ExceptionHandlerMap we replace 'null' entries (means a finally block that catches everything) with RVMType.JavaLangThrowableType so we don't have to do anything special anywhere else in the VM.

ExceptionHandlerMap

private ExceptionHandlerMap(int[] startPCs,
                            int[] endPCs,
                            int[] handlerPCs,
                            TypeReference[] exceptionTypes)

Construct the exception handler map

Parameters:

startPCs -

endPCs -

handlerPCs -

exceptionTypes -

getStartPC

public int[] getStartPC()

getEndPC

public int[] getEndPC()

getHandlerPC

public int[] getHandlerPC()

getExceptionTypes

public TypeReference[] getExceptionTypes()

getExceptionType

public TypeReference getExceptionType(int i)

setStartPC

public void setStartPC(int[] newPCs)

setEndPC

public void setEndPC(int[] newPCs)

setHandlerPC

public void setHandlerPC(int[] newPCs)

readExceptionHandlerMap

static ExceptionHandlerMap readExceptionHandlerMap(DataInputStream input,
                                                   int[] constantPool)
                                            throws IOException

Read the exception handler map

Returns:

an exception handler map or null if none were present

Throws:

IOException

deepCopy

ExceptionHandlerMap deepCopy()