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 AbstractBigDecimalParser

MANY_DIGITS_THRESHOLD, MAX_DIGITS_WITHOUT_LEADING_ZEROS, MAX_EXPONENT_NUMBER, RECURSION_THRESHOLD

Fields inherited from class 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
BigDecimal	parseBigDecimalString(byte[] str, int offset, int length)	Parses a BigDecimalString as specified in JavaBigDecimalParser.
(package private) BigDecimal	parseBigDecimalStringWithManyDigits(byte[] str, int offset, int length)	Parses a big decimal string that has many digits.
(package private) 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 AbstractBigDecimalParser

checkParsedBigDecimalBounds, hasManyDigits

Methods inherited from class AbstractNumberParser

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

Methods inherited from class Object

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

Constructor Details

JavaBigDecimalFromByteArray

public JavaBigDecimalFromByteArray()

Creates a new instance.

Method Details

parseBigDecimalString

public 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:

NullPointerException - if str is null

IllegalArgumentException - if offset or length are illegal

NumberFormatException - if the input string can not be parsed successfully

parseBigDecimalStringWithManyDigits

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

Parses a big decimal string that has many digits.

valueOfBigDecimalString

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