Package com.tonic.analysis.instruction

Class InstanceOfInstruction

java.lang.Object

com.tonic.analysis.instruction.Instruction

com.tonic.analysis.instruction.InstanceOfInstruction

public class InstanceOfInstruction
extends Instruction

Represents the INSTANCEOF instruction (0xC1).

Constructor Summary

Constructors

Constructor	Description
InstanceOfInstruction(ConstPool constPool, int opcode, int offset, int classIndex)	Constructs an InstanceOfInstruction.

Method Summary

Modifier and Type	Method	Description
void	accept(AbstractBytecodeVisitor visitor)	Accepts a visitor for bytecode analysis.
int	getClassIndex()	Returns the class index used by this instruction.
int	getLocalChange()	Returns the change in local variables caused by this instruction.
int	getStackChange()	Returns the change in stack size caused by this instruction.
String	resolveClass()	Resolves and returns a string representation of the class.
String	toString()	Returns a string representation of the instruction.
void	write(DataOutputStream dos)	Writes the INSTANCEOF opcode and its operand to the DataOutputStream.

Methods inherited from class com.tonic.analysis.instruction.Instruction

getLength, getOffset, getOpcode, setOffset

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

InstanceOfInstruction

public InstanceOfInstruction(ConstPool constPool,
                             int opcode,
                             int offset,
                             int classIndex)

Constructs an InstanceOfInstruction.

Parameters:

constPool - The constant pool associated with the class.

opcode - The opcode of the instruction.

offset - The bytecode offset of the instruction.

classIndex - The constant pool index for the class reference.

Method Detail

accept

public void accept(AbstractBytecodeVisitor visitor)

Description copied from class: Instruction

Accepts a visitor for bytecode analysis.

Specified by:

accept in class Instruction

Parameters:

visitor - The visitor to accept.

write

public void write(DataOutputStream dos)
           throws IOException

Writes the INSTANCEOF opcode and its operand to the DataOutputStream.

Specified by:

write in class Instruction

Parameters:

dos - The DataOutputStream to write to.

Throws:

IOException - If an I/O error occurs.

getStackChange

public int getStackChange()

Returns the change in stack size caused by this instruction.

Specified by:

getStackChange in class Instruction

Returns:

The stack size change (pops one object reference, pushes one int).

getLocalChange

public int getLocalChange()

Returns the change in local variables caused by this instruction.

Specified by:

getLocalChange in class Instruction

Returns:

The local variables size change (none).

getClassIndex

public int getClassIndex()

Returns the class index used by this instruction.

Returns:

The constant pool index for the class reference.

resolveClass

public String resolveClass()

Resolves and returns a string representation of the class.

Returns:

The class as a string.

toString

public String toString()

Returns a string representation of the instruction.

Overrides:

toString in class Instruction

Returns:

The mnemonic, class index, and resolved class.