Package com.tonic.analysis.instruction

Class MethodReturnInstruction

java.lang.Object

com.tonic.analysis.instruction.Instruction

com.tonic.analysis.instruction.MethodReturnInstruction

public class MethodReturnInstruction
extends Instruction

Represents the return instructions (IRETURN, LRETURN, FRETURN, DRETURN, ARETURN, RETURN).

Constructor Summary

Constructors

Constructor	Description
MethodReturnInstruction(int opcode, int offset)	Constructs a MethodReturnInstruction.

Method Summary

Modifier and Type	Method	Description
void	accept(AbstractBytecodeVisitor visitor)	Accepts a visitor for bytecode analysis.
int	getLocalChange()	Returns the change in local variables caused by this instruction.
int	getStackChange()	Returns the change in stack size caused by this instruction.
ReturnType	getType()	Returns the type of return operation.
String	toString()	Returns a string representation of the instruction.
void	write(DataOutputStream dos)	Writes the return opcode 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

MethodReturnInstruction

public MethodReturnInstruction(int opcode,
                               int offset)

Constructs a MethodReturnInstruction.

Parameters:

opcode - The opcode of the instruction.

offset - The bytecode offset of the instruction.

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 return opcode 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 return value from the stack).

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).

getType

public ReturnType getType()

Returns the type of return operation.

Returns:

The ReturnType enum value.

toString

public String toString()

Returns a string representation of the instruction.

Overrides:

toString in class Instruction

Returns:

The mnemonic of the return instruction.