Package com.tonic.analysis.instruction

Class ConversionInstruction

java.lang.Object

com.tonic.analysis.instruction.Instruction

com.tonic.analysis.instruction.ConversionInstruction

public class ConversionInstruction
extends Instruction

Represents the type conversion instructions (I2F, I2D, L2I, L2F, L2D, F2I, F2L, F2D, D2I, D2L, D2F).

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ConversionInstruction.ConversionType	The widening conversion kinds, each pairing a JVM opcode with its mnemonic.

Constructor Summary

Constructors

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

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.
ConversionInstruction.ConversionType	getType()	Returns the type of conversion operation.
String	toString()	Returns a string representation of the instruction.
void	write(DataOutputStream dos)	Writes the conversion 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

ConversionInstruction

public ConversionInstruction(int opcode,
                             int offset)

Constructs a ConversionInstruction.

Parameters:

opcode - The opcode of the instruction.

offset - The bytecode offset of the instruction.

Throws:

IllegalArgumentException - if the opcode is not a conversion opcode

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 conversion 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 based on the conversion type.

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 ConversionInstruction.ConversionType getType()

Returns the type of conversion operation.

Returns:

The ConversionType enum value.

toString

public String toString()

Returns a string representation of the instruction.

Overrides:

toString in class Instruction

Returns:

The mnemonic of the conversion instruction.