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

Class AbstractJBlockOptimizer

java.lang.Object

com.pnfsoftware.jeb.core.AbstractPlugin

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

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

All Implemented Interfaces:

IPlugin, IJOptimizer

public abstract class AbstractJBlockOptimizer
extends AbstractJOptimizer

A specialized skeleton implementation for a method AST optimizer meant to run on every block of AST code of the method, recursively. This optimizer may be used to optimize AST methods only, not AST classes.

Refer to the javadoc of the parent types for more information.

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

Constructor	Description
AbstractJBlockOptimizer()	Create a standard optimizer.
AbstractJBlockOptimizer(JOptimizerType type)	Create an optimizer.
AbstractJBlockOptimizer(JOptimizerType type, String name)	Create an optimizer.

Method Summary

Modifier and Type	Method	Description
abstract int	optimizeBlock(IJavaBlock b, IJavaElement parent)	Optimize a block of AST code.
int	perform()	The default implementation calls performInternal(IJavaBlock, IJavaElement) on the input AST method, if the element to be optimized is a method.
protected int	performInternal(IJavaBlock b, IJavaElement parent)	The default implementation calls optimizeBlock(IJavaBlock, IJavaElement) on all blocks of the AST method to be optimized.

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

AbstractJBlockOptimizer

public AbstractJBlockOptimizer()

Create a standard optimizer.

AbstractJBlockOptimizer

public AbstractJBlockOptimizer(JOptimizerType type)

Create an optimizer.

Parameters:

type -

AbstractJBlockOptimizer

public AbstractJBlockOptimizer(JOptimizerType type,
 String name)

Create an optimizer.

Parameters:

type -

name -

Method Details

perform

public int perform()

The default implementation calls performInternal(IJavaBlock, IJavaElement) on the input AST method, if the element to be optimized is a method.

It may be overridden, although it is not recommended.

Specified by:

perform in class AbstractJOptimizer

Returns:

the number of optimizations performed, 0 if none

performInternal

protected int performInternal(IJavaBlock b,
 IJavaElement parent)

The default implementation calls optimizeBlock(IJavaBlock, IJavaElement) on all blocks of the AST method to be optimized. The method tree is visited in depth, blocks are optimized post-visit.

It may be overridden, although it is not recommended.

Parameters:

b - the current block to optimize

parent - the parent of the block to be optimized(

Returns:

number of optimizations performed

optimizeBlock

public abstract int optimizeBlock(IJavaBlock b,
 IJavaElement parent)

Optimize a block of AST code. Optimizers must implement this method.

Parameters:

b - block to be optimized

parent - the parent element of the block to be optimized

Returns:

number of optimizations performed