calypso.util
Class SignedInteger

java.lang.Object
  |
  +--calypso.util.SignedInteger

public class SignedInteger

extends java.lang.Object

Utility class that represents the parse state from parsing a signed integer. The sign of the integer is maintained so that "10" can be distinguished from "+10". In addition, we can optionally handle numbers expressed as percentages.

See Also:

Integer.parseInt

Field Summary

protected boolean	fPct
protected int	fSign
protected int	fValue
static int	MINUS
static int	NONE
static int	PLUS

Constructor Summary

SignedInteger(int aValue, int aSign)

SignedInteger(java.lang.String aString, boolean aAllowPct)
The integer part works (almost) the same as atoi(): Skip leading white spaces.

Method Summary

int	computeValue(int aBaseValue) Compute a value based on "aBaseValue".
int	getSign() Return the sign of the value.
int	intValue()
boolean	isPct()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

PLUS

public static final int PLUS

MINUS

public static final int MINUS

NONE

public static final int NONE

fValue

protected int fValue

fSign

protected int fSign

fPct

protected boolean fPct

Constructor Detail

SignedInteger

public SignedInteger(java.lang.String aString,
                     boolean aAllowPct)
              throws java.lang.NumberFormatException

The integer part works (almost) the same as atoi():

• Skip leading white spaces.
• Non-digit char terminates convertion.
• If got a valid integer, don't throw NumberFormatException.
• Throw exception if first nonspace char is not digit(atoi returns 0). Example: " +4z" works as 4.

SignedInteger

public SignedInteger(int aValue,
                     int aSign)

Method Detail

intValue

public int intValue()

isPct

public boolean isPct()

computeValue

public int computeValue(int aBaseValue)

Compute a value based on "aBaseValue". Apply the sign of this SignedInteger to determine the value to return.

getSign

public int getSign()

Return the sign of the value.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object