Package soot.toDex

Class TrapSplitter

java.lang.Object

soot.Transformer

soot.BodyTransformer

soot.toDex.TrapSplitter

public class TrapSplitter
extends BodyTransformer

Transformer that splits nested traps for Dalvik which does not support hierarchies of traps. If we have a trap (1-3) with handler A and a trap (2) with handler B, we transform them into three new traps: (1) and (3) with A, (2) with A+B.

Author:

Steven Arzt

Constructor Summary

Constructors

Constructor	Description
TrapSplitter(Singletons.Global g)

Method Summary

Modifier and Type	Method	Description
protected void	internalTransform(Body b, String phaseName, Map<String,String> options)	This method is called to perform the transformation itself.
static void	removePotentiallyUselassTraps(Body b, Set<Unit> potentiallyUselessTrapHandlers)	Changes the given body so that trap handlers, which are contained in the given set, are removed in case they are not referenced by any trap.
static TrapSplitter	v()

Methods inherited from class soot.BodyTransformer

transform, transform, transform

Methods inherited from class java.lang.Object

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

Constructor Detail

TrapSplitter

public TrapSplitter(Singletons.Global g)

Method Detail

v

public static TrapSplitter v()

internalTransform

protected void internalTransform(Body b,
                                 String phaseName,
                                 Map<String,String> options)

Description copied from class: BodyTransformer

This method is called to perform the transformation itself. It is declared abstract; subclasses must implement this method by making it the entry point to their actual Body transformation.

Specified by:

internalTransform in class BodyTransformer

Parameters:

b - the body on which to apply the transformation

phaseName - the phasename for this transform; not typically used by implementations.

options - the actual computed options; a combination of default options and Scene specified options.

removePotentiallyUselassTraps

public static void removePotentiallyUselassTraps(Body b,
                                                 Set<Unit> potentiallyUselessTrapHandlers)

Changes the given body so that trap handlers, which are contained in the given set, are removed in case they are not referenced by any trap. The list is changed so that it contains the unreferenced trap handlers.

Parameters:

b - the body

potentiallyUselessTrapHandlers - potentially useless trap handlers