Package com.tonic.analysis.instruction

Class TableSwitchInstruction

java.lang.Object

com.tonic.analysis.instruction.Instruction

com.tonic.analysis.instruction.TableSwitchInstruction

public class TableSwitchInstruction
extends Instruction

Represents the TABLESWITCH instruction (0xAA).

Constructor Summary

Constructors

Constructor	Description
TableSwitchInstruction(int opcode, int offset, int padding, int defaultOffset, int low, int high, Map<Integer,Integer> jumpOffsets)	Constructs a TableSwitchInstruction.

Method Summary

Modifier and Type	Method	Description
void	accept(AbstractBytecodeVisitor visitor)	Accepts a visitor for bytecode analysis.
int	getDefaultOffset()
int	getHigh()
Map<Integer,Integer>	getJumpOffsets()
int	getLocalChange()	Returns the change in local variables caused by this instruction.
int	getLow()
int	getPadding()
int	getStackChange()	Returns the change in stack size caused by this instruction.
String	toString()	Returns a string representation of the instruction.
void	write(DataOutputStream dos)	Writes the TABLESWITCH 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

TableSwitchInstruction

public TableSwitchInstruction(int opcode,
                              int offset,
                              int padding,
                              int defaultOffset,
                              int low,
                              int high,
                              Map<Integer,Integer> jumpOffsets)

Constructs a TableSwitchInstruction.

Parameters:

opcode - The opcode of the instruction.

offset - The bytecode offset of the instruction.

padding - The number of padding bytes to align to 4-byte boundary.

defaultOffset - The branch target offset if no key matches.

low - The lowest key value.

high - The highest key value.

jumpOffsets - The map of key to branch target offsets.

Method Detail

getPadding

public int getPadding()

Returns:

the padding

getDefaultOffset

public int getDefaultOffset()

Returns:

the default offset

getLow

public int getLow()

Returns:

the low

getHigh

public int getHigh()

Returns:

the high

getJumpOffsets

public Map<Integer,Integer> getJumpOffsets()

Returns:

the jump offsets

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 TABLESWITCH 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 (pops 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).

toString

public String toString()

Returns a string representation of the instruction.

Overrides:

toString in class Instruction

Returns:

The mnemonic, default offset, low, high, and jump offsets.