Package com.tonic.analysis.instruction

Class WideIIncInstruction

java.lang.Object

com.tonic.analysis.instruction.Instruction

com.tonic.analysis.instruction.WideIIncInstruction

All Implemented Interfaces:

LocalVarInstruction

public class WideIIncInstruction
extends Instruction
implements LocalVarInstruction

Represents the JVM WIDE IINC instruction.

Constructor Summary

Constructors

Constructor	Description
WideIIncInstruction(int opcode, int offset, int varIndex, int constValue)	Constructs a WideIIncInstruction.

Method Summary

Modifier and Type	Method	Description
void	accept(AbstractBytecodeVisitor visitor)	Accepts a visitor for bytecode analysis.
int	getConstValue()	Returns the constant value by which the local variable is incremented.
int	getLocalChange()	Returns the change in local variables caused by this instruction.
int	getStackChange()	Returns the change in stack size caused by this instruction.
int	getVarIndex()	Returns the local variable index to be incremented.
String	toString()	Returns a string representation of the instruction.
void	write(DataOutputStream dos)	Writes the WIDE IINC opcode and its operands 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

WideIIncInstruction

public WideIIncInstruction(int opcode,
                           int offset,
                           int varIndex,
                           int constValue)

Constructs a WideIIncInstruction.

Parameters:

opcode - The WIDE opcode (0xC4).

offset - The bytecode offset where WIDE starts.

varIndex - The two-byte local variable index.

constValue - The two-byte constant increment.

Method Detail

getVarIndex

public int getVarIndex()

Returns the local variable index to be incremented.

Specified by:

getVarIndex in interface LocalVarInstruction

Returns:

The variable index.

getConstValue

public int getConstValue()

Returns the constant value by which the local variable is incremented.

Returns:

The constant increment value.

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 WIDE IINC opcode and its operands 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 (none).

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).

toString

public String toString()

Returns a string representation of the instruction.

Overrides:

toString in class Instruction

Returns:

The instruction details.