程序包 proguard.analysis.cpa.jvm.operators

类 DefaultReduceOperator<ContentT extends AbstractState<ContentT>>

java.lang.Object

proguard.analysis.cpa.jvm.operators.DefaultReduceOperator<ContentT>

类型参数:

ContentT - The content of the jvm states. For example, this can be a SetAbstractState of taints for taint analysis or a ValueAbstractState for value analysis.

所有已实现的接口:

ReduceOperator<ContentT>

直接已知子类:

TaintReduceOperator, ValueReduceOperator

public class DefaultReduceOperator<ContentT extends AbstractState<ContentT>>
extends Object
implements ReduceOperator<ContentT>

This ReduceOperator simulates the JVM behavior on a method call. It takes a clone of the caller JvmAbstractState, creates an empty stack and a local variables array with the callee arguments.

构造器概要

构造器

构造器	说明
DefaultReduceOperator()	Create the default reduce operator for the JVM.
DefaultReduceOperator(boolean reduceHeap)	Create the default reduce operator for the JVM.

方法概要

修饰符和类型	方法	说明
protected JvmAbstractState<ContentT>	createJvmAbstractState(JvmCfaNode programLocation, JvmFrameAbstractState<ContentT> frame, JvmHeapAbstractState<ContentT> heap, MapAbstractState<String,ContentT> staticFields)
protected void	reduceHeap(JvmHeapAbstractState<ContentT> heap, JvmFrameAbstractState<ContentT> reducedFrame, MapAbstractState<String,ContentT> reducedStaticFields)	Reduces the heap state.
JvmAbstractState<ContentT>	reduceImpl(JvmAbstractState<ContentT> expandedInitialState, JvmCfaNode blockEntryNode, Call call)	Creates the initial state of the called procedure discarding the useless information from the state of the caller.
protected void	reduceStaticFields(MapAbstractState<String,ContentT> staticFields)	Reduces the static fields.

从类继承的方法 java.lang.Object

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

从接口继承的方法 proguard.analysis.cpa.bam.ReduceOperator

onMethodEntry, reduce

构造器详细资料

DefaultReduceOperator

public DefaultReduceOperator()

Create the default reduce operator for the JVM.

DefaultReduceOperator

public DefaultReduceOperator(boolean reduceHeap)

Create the default reduce operator for the JVM.

参数:

reduceHeap - whether reduction of the heap is performed

方法详细资料

reduceImpl

public JvmAbstractState<ContentT> reduceImpl(JvmAbstractState<ContentT> expandedInitialState,
 JvmCfaNode blockEntryNode,
 Call call)

从接口复制的说明: ReduceOperator

Creates the initial state of the called procedure discarding the useless information from the state of the caller.

指定者:

reduceImpl 在接口中 ReduceOperator<ContentT extends AbstractState<ContentT>>

参数:

expandedInitialState - the entry state of the called procedure before any reduction

blockEntryNode - the entry node of the called procedure

call - the information of the call to the procedure

返回:

The entry state of the called procedure

reduceStaticFields

protected void reduceStaticFields(MapAbstractState<String,ContentT> staticFields)

Reduces the static fields. The default implementation doesn't perform any reduction.

参数:

staticFields - the static fields map that is modified by this method by performing reduction

reduceHeap

protected void reduceHeap(JvmHeapAbstractState<ContentT> heap,
 JvmFrameAbstractState<ContentT> reducedFrame,
 MapAbstractState<String,ContentT> reducedStaticFields)

Reduces the heap state. The default implementation doesn't perform any reduction.

参数:

heap - the heap that is modified by this method by performing reduction

reducedFrame - the frame after reduction has been performed on it

reducedStaticFields - the static fields after reduction has been performed on them

createJvmAbstractState

protected JvmAbstractState<ContentT> createJvmAbstractState(JvmCfaNode programLocation,
 JvmFrameAbstractState<ContentT> frame,
 JvmHeapAbstractState<ContentT> heap,
 MapAbstractState<String,ContentT> staticFields)