Module ch.randelshofer.fastdoubleparser

Package ch.randelshofer.fastdoubleparser

Class JavaBigDecimalFromByteArray

java.lang.Object

ch.randelshofer.fastdoubleparser.AbstractNumberParser

ch.randelshofer.fastdoubleparser.AbstractBigDecimalParser

ch.randelshofer.fastdoubleparser.JavaBigDecimalFromByteArray

final class JavaBigDecimalFromByteArray
extends AbstractBigDecimalParser

Parses a double from a byte array.

Field Summary

Fields inherited from class ch.randelshofer.fastdoubleparser.AbstractBigDecimalParser

MANY_DIGITS_THRESHOLD, MAX_DIGITS_WITHOUT_LEADING_ZEROS, MAX_EXPONENT_NUMBER, RECURSION_THRESHOLD

Fields inherited from class ch.randelshofer.fastdoubleparser.AbstractNumberParser

CHAR_TO_HEX_MAP, DECIMAL_POINT_CLASS, ILLEGAL_OFFSET_OR_ILLEGAL_LENGTH, OTHER_CLASS, SYNTAX_ERROR, SYNTAX_ERROR_BITS, VALUE_EXCEEDS_LIMITS

Constructor Summary

Constructors

Constructor	Description
JavaBigDecimalFromByteArray()	Creates a new instance.

Method Summary

Modifier and Type	Method	Description
java.math.BigDecimal	parseBigDecimalString(byte[] str, int offset, int length)	Parses a BigDecimalString as specified in JavaBigDecimalParser.
(package private) java.math.BigDecimal	parseBigDecimalStringWithManyDigits(byte[] str, int offset, int length)	Parses a big decimal string that has many digits.
(package private) java.math.BigDecimal	valueOfBigDecimalString(byte[] str, int integerPartIndex, int decimalPointIndex, int nonZeroFractionalPartIndex, int exponentIndicatorIndex, boolean isNegative, int exponent)	Parses a big decimal string after we have identified the parts of the significand, and after we have obtained the exponent value.

Methods inherited from class ch.randelshofer.fastdoubleparser.AbstractBigDecimalParser

checkParsedBigDecimalBounds, hasManyDigits

Methods inherited from class ch.randelshofer.fastdoubleparser.AbstractNumberParser

charAt, charAt, charAt, checkBounds, checkBounds, lookupHex, lookupHex

Methods inherited from class java.lang.Object

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

Constructor Detail

JavaBigDecimalFromByteArray

public JavaBigDecimalFromByteArray()

Creates a new instance.

Method Detail

parseBigDecimalString

public java.math.BigDecimal parseBigDecimalString(byte[] str,
                                                  int offset,
                                                  int length)

Parses a BigDecimalString as specified in JavaBigDecimalParser.

Parameters:

str - the input string

offset - start of the input data

length - length of the input data

Returns:

the parsed BigDecimal

Throws:

java.lang.NullPointerException - if str is null

java.lang.IllegalArgumentException - if offset or length are illegal

java.lang.NumberFormatException - if the input string can not be parsed successfully

parseBigDecimalStringWithManyDigits

java.math.BigDecimal parseBigDecimalStringWithManyDigits(byte[] str,
                                                         int offset,
                                                         int length)

Parses a big decimal string that has many digits.

valueOfBigDecimalString

java.math.BigDecimal valueOfBigDecimalString(byte[] str,
                                             int integerPartIndex,
                                             int decimalPointIndex,
                                             int nonZeroFractionalPartIndex,
                                             int exponentIndicatorIndex,
                                             boolean isNegative,
                                             int exponent)

Parses a big decimal string after we have identified the parts of the significand, and after we have obtained the exponent value.

       integerPartIndex
       │  decimalPointIndex
       │  │  nonZeroFractionalPartIndex
       │  │  │  exponentIndicatorIndex
       ↓  ↓  ↓  ↓
     "-123.00456e-789"

 

Parameters:

str - the input string

integerPartIndex - the start index of the integer part of the significand

decimalPointIndex - the index of the decimal point in the significand (same as exponentIndicatorIndex if there is no decimal point)

nonZeroFractionalPartIndex - the start index of the non-zero fractional part of the significand

exponentIndicatorIndex - the index of the exponent indicator (same as end of string if there is no exponent indicator)

isNegative - indicates that the significand is negative

exponent - the exponent value

Returns:

the parsed big decimal