com.fasterxml.jackson.core.io

Class NumberInput

java.lang.Object

com.fasterxml.jackson.core.io.NumberInput

public final class NumberInput
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static String	NASTY_SMALL_DOUBLE Textual representation of a double constant that can cause nasty problems with JDK (see http://www.exploringbinary.com/java-hangs-when-converting-2-2250738585072012e-308).

Constructor Summary

Constructors

Constructor and Description
NumberInput()

Method Summary

Methods

Modifier and Type	Method and Description
static boolean	inLongRange(char[] digitChars, int offset, int len, boolean negative) Helper method for determining if given String representation of an integral number would fit in 64-bit Java long or not.
static boolean	inLongRange(String numberStr, boolean negative) Similar to inLongRange(char[],int,int,boolean), but with String argument
static double	parseAsDouble(String input, double defaultValue)
static int	parseAsInt(String input, int defaultValue)
static long	parseAsLong(String input, long defaultValue)
static double	parseDouble(String numStr)
static int	parseInt(char[] digitChars, int offset, int len) Fast method for parsing integers that are known to fit into regular 32-bit signed int type.
static int	parseInt(String str) Helper method to (more) efficiently parse integer numbers from String values.
static long	parseLong(char[] digitChars, int offset, int len)
static long	parseLong(String str)

Methods inherited from class java.lang.Object

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

Field Detail

NASTY_SMALL_DOUBLE

public static final String NASTY_SMALL_DOUBLE

Textual representation of a double constant that can cause nasty problems with JDK (see http://www.exploringbinary.com/java-hangs-when-converting-2-2250738585072012e-308).

See Also:

Constant Field Values

Constructor Detail

NumberInput

public NumberInput()

Method Detail

parseInt

public static int parseInt(char[] digitChars,
           int offset,
           int len)

Fast method for parsing integers that are known to fit into regular 32-bit signed int type. This means that length is between 1 and 9 digits (inclusive)

Note: public to let unit tests call it

parseInt

public static int parseInt(String str)

Helper method to (more) efficiently parse integer numbers from String values.

parseLong

public static long parseLong(char[] digitChars,
             int offset,
             int len)

parseLong

public static long parseLong(String str)

inLongRange

public static boolean inLongRange(char[] digitChars,
                  int offset,
                  int len,
                  boolean negative)

Helper method for determining if given String representation of an integral number would fit in 64-bit Java long or not. Note that input String must NOT contain leading minus sign (even if 'negative' is set to true).

Parameters:

negative - Whether original number had a minus sign (which is NOT passed to this method) or not

inLongRange

public static boolean inLongRange(String numberStr,
                  boolean negative)

Similar to inLongRange(char[],int,int,boolean), but with String argument

Parameters:

negative - Whether original number had a minus sign (which is NOT passed to this method) or not

parseAsInt

public static int parseAsInt(String input,
             int defaultValue)

parseAsLong

public static long parseAsLong(String input,
               long defaultValue)

parseAsDouble

public static double parseAsDouble(String input,
                   double defaultValue)

parseDouble

public static double parseDouble(String numStr)
                          throws NumberFormatException

Throws:

NumberFormatException