Package com.pnfsoftware.jeb.core.units.code.java

Class AbstractJElementOptimizer

java.lang.Object

com.pnfsoftware.jeb.core.AbstractPlugin

com.pnfsoftware.jeb.core.units.code.java.AbstractJOptimizer

com.pnfsoftware.jeb.core.units.code.java.AbstractJElementOptimizer

All Implemented Interfaces:

IPlugin, IJOptimizer

public abstract class AbstractJElementOptimizer
extends AbstractJOptimizer

Base optimizer that visits and may replace sub-elements of a method AST.

Field Summary

Fields inherited from class com.pnfsoftware.jeb.core.units.code.java.AbstractJOptimizer

c, cf, decomp, dex, drcollector, jctx, logger, m, of, tf

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractJElementOptimizer()	Create a standard optimizer.
protected	AbstractJElementOptimizer(JOptimizerType type)	Create an optimizer.
protected	AbstractJElementOptimizer(JOptimizerType type, String name)	Create an optimizer.

Method Summary

Modifier and Type	Method	Description
protected abstract IJavaElement	optimizeElement(IJavaElement e, IJavaElement parent)	Optimize an AST element.
int	perform()	An optimizer must implement this method.

Methods inherited from class com.pnfsoftware.jeb.core.units.code.java.AbstractJOptimizer

getName, getPluginInformation, getPriority, getType, isEnabled, perform, setEnabled, setName, setPriority, setType

Methods inherited from class com.pnfsoftware.jeb.core.AbstractPlugin

dispose, getData, setData

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.pnfsoftware.jeb.core.IPlugin

dispose, getData, setData

Constructor Details

AbstractJElementOptimizer

protected AbstractJElementOptimizer()

Create a standard optimizer.

AbstractJElementOptimizer

protected AbstractJElementOptimizer(JOptimizerType type)

Create an optimizer.

Parameters:

type - optimizer type, or null to use JOptimizerType.NORMAL

AbstractJElementOptimizer

protected AbstractJElementOptimizer(JOptimizerType type,
 String name)

Create an optimizer.

Parameters:

type - optimizer type, or null to use JOptimizerType.NORMAL

name - optimizer name, or null to derive one from the implementation class

Method Details

perform

public int perform()

Description copied from class: AbstractJOptimizer

An optimizer must implement this method. This method is called by a master optimizer to perform the optimization on the selected target.

Note that the optimizer is responsible for returning a legal method context, e.g.: the method IR instructions must be consistent with the CFG; the CFG must adhere to certain rules (see cleanGraph); if the data flow analysis is no longer valid, it should be invalidated (see resetDFA); etc.

Specified by:

perform in class AbstractJOptimizer

Returns:

the number of optimizations performed, 0 if none

optimizeElement

protected abstract IJavaElement optimizeElement(IJavaElement e,
 IJavaElement parent)

Optimize an AST element.

Parameters:

e - element to optimize

parent - parent element

Returns:

replacement element, or null to leave the element unchanged