org.nervos.appchain.utils

Class Numeric

java.lang.Object

org.nervos.appchain.utils.Numeric

public final class Numeric
extends java.lang.Object

Message codec functions.

Implementation as per https://github.com/ethereum/wiki/wiki/JSON-RPC#hex-value-encoding

Method Summary

Modifier and Type	Method and Description
static byte	asByte(int m, int n)
static java.lang.String	cleanHexPrefix(java.lang.String input)
static boolean	containsHexPrefix(java.lang.String input)
static java.math.BigInteger	decodeQuantity(java.lang.String value)
static java.lang.String	encodeQuantity(java.math.BigInteger value)
static byte[]	hexStringToByteArray(java.lang.String input)
static boolean	isIntegerValue(java.math.BigDecimal value)
static java.lang.String	prependHexPrefix(java.lang.String input)
static java.math.BigInteger	toBigInt(byte[] value)
static java.math.BigInteger	toBigInt(byte[] value, int offset, int length)
static java.math.BigInteger	toBigInt(java.lang.String hexValue)
static java.math.BigInteger	toBigIntNoPrefix(java.lang.String hexValue)
static byte[]	toBytesPadded(java.math.BigInteger value, int length)
static java.lang.String	toHexString(byte[] input)
static java.lang.String	toHexString(byte[] input, int offset, int length, boolean withPrefix)
static java.lang.String	toHexStringNoPrefix(java.math.BigInteger value)
static java.lang.String	toHexStringNoPrefix(byte[] input)
static java.lang.String	toHexStringNoPrefixZeroPadded(java.math.BigInteger value, int size)
static java.lang.String	toHexStringWithPrefix(java.math.BigInteger value)
static java.lang.String	toHexStringWithPrefixZeroPadded(java.math.BigInteger value, int size)

Methods inherited from class java.lang.Object

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

Method Detail

encodeQuantity

public static java.lang.String encodeQuantity(java.math.BigInteger value)

decodeQuantity

public static java.math.BigInteger decodeQuantity(java.lang.String value)

cleanHexPrefix

public static java.lang.String cleanHexPrefix(java.lang.String input)

prependHexPrefix

public static java.lang.String prependHexPrefix(java.lang.String input)

containsHexPrefix

public static boolean containsHexPrefix(java.lang.String input)

toBigInt

public static java.math.BigInteger toBigInt(byte[] value,
                                            int offset,
                                            int length)

toBigInt

public static java.math.BigInteger toBigInt(byte[] value)

toBigInt

public static java.math.BigInteger toBigInt(java.lang.String hexValue)

toBigIntNoPrefix

public static java.math.BigInteger toBigIntNoPrefix(java.lang.String hexValue)

toHexStringWithPrefix

public static java.lang.String toHexStringWithPrefix(java.math.BigInteger value)

toHexStringNoPrefix

public static java.lang.String toHexStringNoPrefix(java.math.BigInteger value)

toHexStringNoPrefix

public static java.lang.String toHexStringNoPrefix(byte[] input)

toHexStringWithPrefixZeroPadded

public static java.lang.String toHexStringWithPrefixZeroPadded(java.math.BigInteger value,
                                                               int size)

toHexStringNoPrefixZeroPadded

public static java.lang.String toHexStringNoPrefixZeroPadded(java.math.BigInteger value,
                                                             int size)

toBytesPadded

public static byte[] toBytesPadded(java.math.BigInteger value,
                                   int length)

hexStringToByteArray

public static byte[] hexStringToByteArray(java.lang.String input)

toHexString

public static java.lang.String toHexString(byte[] input,
                                           int offset,
                                           int length,
                                           boolean withPrefix)

toHexString

public static java.lang.String toHexString(byte[] input)

asByte

public static byte asByte(int m,
                          int n)

isIntegerValue

public static boolean isIntegerValue(java.math.BigDecimal value)