Package org.jboss.byteman.agent.adapter.cfg

Class FanOut

java.lang.Object

org.jboss.byteman.agent.adapter.cfg.FanOut

public class FanOut
extends Object

A representation of a 1:M relation between labels/code locations. This is used to represent branchouts in a CFG where the 1 is the label of the BBlock and the M lists outgoing normal (non-exception) control flow. It is also used to represent the relationship between basic blocks (identified by their primary label) and labels identifying instructions contained in the block. Note that in the former case the use of labels allows control flow linkes to basic blocks which have not yet been generated to be recorded.

Constructor Summary

Constructors

Constructor	Description
FanOut(org.objectweb.asm.Label from)	construct a new empty link
FanOut(org.objectweb.asm.Label from, org.objectweb.asm.Label to)	construct a new link with one element in the target set
FanOut(org.objectweb.asm.Label from, org.objectweb.asm.Label to1, org.objectweb.asm.Label to2)	construct a new link with two elements in the target set

Method Summary

Modifier and Type	Method	Description
void	append(org.objectweb.asm.Label to)	add a new link to the target set
org.objectweb.asm.Label	getFrom()
org.objectweb.asm.Label	getTo(int i)	retrieve a link from the target set by index
int	getToCount()	retrieve the size of the target set
Iterator<org.objectweb.asm.Label>	iterator()	obtain an iterator over the target set

Methods inherited from class java.lang.Object

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

Constructor Detail

FanOut

public FanOut(org.objectweb.asm.Label from)

construct a new empty link

Parameters:

from - the start point for all links in the set

FanOut

public FanOut(org.objectweb.asm.Label from,
              org.objectweb.asm.Label to)

construct a new link with one element in the target set

Parameters:

from - the start point for all links in the set

to - the first link target

FanOut

public FanOut(org.objectweb.asm.Label from,
              org.objectweb.asm.Label to1,
              org.objectweb.asm.Label to2)

construct a new link with two elements in the target set

Parameters:

from - the start point for all links in the set

to1 - the first link target

to2 - the second link target

Method Detail

getFrom

public org.objectweb.asm.Label getFrom()

append

public void append(org.objectweb.asm.Label to)

add a new link to the target set

Parameters:

to - the target of the link

getTo

public org.objectweb.asm.Label getTo(int i)

retrieve a link from the target set by index

Parameters:

i - the target link index

Returns:

a label for the target

getToCount

public int getToCount()

retrieve the size of the target set

Returns:

the size

iterator

public Iterator<org.objectweb.asm.Label> iterator()

obtain an iterator over the target set

Returns:

an iterator