Package com.tonic.analysis.instruction

Class NewPrimitiveArrayInstruction

java.lang.Object

com.tonic.analysis.instruction.Instruction

com.tonic.analysis.instruction.NewPrimitiveArrayInstruction

public class NewPrimitiveArrayInstruction
extends Instruction

Represents the NEWARRAY instruction (0xBC).

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	NewPrimitiveArrayInstruction.ArrayType	The primitive element types NEWARRAY can allocate, each pairing an atype code with a description.

Constructor Summary

Constructors

Constructor	Description
NewPrimitiveArrayInstruction(int opcode, int offset, int typeCode, int count)	Constructs a NewPrimitiveArrayInstruction.

Method Summary

Modifier and Type	Method	Description
void	accept(AbstractBytecodeVisitor visitor)	Accepts a visitor for bytecode analysis.
NewPrimitiveArrayInstruction.ArrayType	getArrayType()
int	getCount()
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	getTypeCode()
String	toString()	Returns a string representation of the instruction.
void	write(DataOutputStream dos)	Writes the NEWARRAY 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

NewPrimitiveArrayInstruction

public NewPrimitiveArrayInstruction(int opcode,
                                    int offset,
                                    int typeCode,
                                    int count)

Constructs a NewPrimitiveArrayInstruction.

Parameters:

opcode - The opcode of the instruction.

offset - The bytecode offset of the instruction.

typeCode - The type code of the array elements.

count - The number of elements in the array.

Throws:

IllegalArgumentException - if the opcode is not NEWARRAY (0xBC)

Method Detail

getArrayType

public NewPrimitiveArrayInstruction.ArrayType getArrayType()

Returns:

the array type

getTypeCode

public int getTypeCode()

Returns:

the type code

getCount

public int getCount()

Returns:

the count

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 NEWARRAY 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 the element count and pushes the array reference (net 0).

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 mnemonic and array type of the instruction.