Package com.android.dx.cf.code

Class Simulator

java.lang.Object

com.android.dx.cf.code.Simulator

public class Simulator
extends Object

Class which knows how to simulate the effects of executing bytecode.

Note: This class is not thread-safe. If multiple threads need to use a single instance, they must synchronize access explicitly between themselves.

Constructor Summary

Constructors

Constructor	Description
Simulator(Machine machine, ConcreteMethod method, DexOptions dexOptions)	Constructs an instance.

Method Summary

Modifier and Type	Method	Description
int	simulate(int offset, Frame frame)	Simulates the effect of the instruction at the given offset, by making appropriate calls on the given frame.
void	simulate(ByteBlock bb, Frame frame)	Simulates the effect of executing the given basic block.

Methods inherited from class java.lang.Object

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

Constructor Details

Simulator

public Simulator(Machine machine,
 ConcreteMethod method,
 DexOptions dexOptions)

Constructs an instance.

Parameters:

machine - non-null; machine to use when simulating

method - non-null; method data to use

dexOptions - non-null; options for dex output

Method Details

simulate

public void simulate(ByteBlock bb,
 Frame frame)

Simulates the effect of executing the given basic block. This modifies the passed-in frame to represent the end result.

Parameters:

bb - non-null; the basic block

frame - non-null; frame to operate on

simulate

public int simulate(int offset,
 Frame frame)

Simulates the effect of the instruction at the given offset, by making appropriate calls on the given frame.

Parameters:

offset - offset >= 0; offset of the instruction to simulate

frame - non-null; frame to operate on

Returns:

the length of the instruction, in bytes