sandmark.watermark.objectwm
Class ObjectHelper

java.lang.Object
  |
  +--sandmark.watermark.objectwm.ObjectHelper

public class ObjectHelper

extends java.lang.Object

This class contains the support methods required by the "Insertion" and other *Util classes

Constructor Summary

(package private)

ObjectHelper() constructor

Method Summary

boolean	codeMatch(java.lang.String[] str1, java.lang.String[] str2, int numInstr) Compares two instruction opcode in string format
static void	display_VectorInfo(java.util.Vector vec, java.lang.String mesg) Displays watermark vector information
java.lang.String	extractShortFileName(java.lang.String classFile) extracts the short className from the full classFile name
int	getArgumentValInInstruction(java.lang.String instr) Extracts the argument val in the instruction
java.lang.String	getOpcode(java.lang.String instrCode) Extracts the opcode from the instruction
java.lang.String	getOpcodeFromInstr(java.lang.String instrCode) Extract the opcode from a verbose instruction
int	getRandomValue(int low, int high) returns a random value within specified boundary; taking values from low to high-1
boolean	isOfTypeBranch(de.fub.bytecode.generic.Instruction instr) overloaded from previous method
boolean	isOfTypeBranch(java.lang.String opcode) Returns true if the String is a branch statement, else returns false

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ObjectHelper

ObjectHelper()

constructor

Method Detail

getRandomValue

public int getRandomValue(int low,
                          int high)

returns a random value within specified boundary; taking values from low to high-1

codeMatch

public boolean codeMatch(java.lang.String[] str1,
                         java.lang.String[] str2,
                         int numInstr)

Compares two instruction opcode in string format

display_VectorInfo

public static void display_VectorInfo(java.util.Vector vec,
                                      java.lang.String mesg)

Displays watermark vector information

extractShortFileName

public java.lang.String extractShortFileName(java.lang.String classFile)

extracts the short className from the full classFile name

getOpcodeFromInstr

public java.lang.String getOpcodeFromInstr(java.lang.String instrCode)

Extract the opcode from a verbose instruction

getOpcode

public java.lang.String getOpcode(java.lang.String instrCode)

Extracts the opcode from the instruction

isOfTypeBranch

public boolean isOfTypeBranch(java.lang.String opcode)

Returns true if the String is a branch statement, else returns false

isOfTypeBranch

public boolean isOfTypeBranch(de.fub.bytecode.generic.Instruction instr)

overloaded from previous method

getArgumentValInInstruction

public int getArgumentValInInstruction(java.lang.String instr)

Extracts the argument val in the instruction