org.brewchain.sdk.contract.abi

类 Function

java.lang.Object

org.brewchain.sdk.contract.abi.Function

所有已实现的接口:

java.io.Serializable

public final class Function
extends java.lang.Object
implements java.io.Serializable

Represents a function in an Ethereum contract. Can encode and decode calls matching this function's signature. Can decode the function's return values.

另请参阅:

序列化表格

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	Function.Type

字段概要

字段

限定符和类型	字段和说明
static int	SELECTOR_LEN

构造器概要

构造器

构造器和说明
Function(Function.Type type, java.lang.String signature, java.lang.String outputs, java.security.MessageDigest messageDigest)
Function(java.lang.String signature)
Function(java.lang.String signature, java.lang.String outputs)
Function(java.lang.String signature, java.lang.String outputs, java.security.MessageDigest messageDigest)

方法概要

限定符和类型	方法和说明
int	callLength(Tuple args)
int	callLength(Tuple args, boolean validate)
Tuple	decodeCall(byte[] array) 把合约方法调用的data解码为Java对象
Tuple	decodeCall(java.nio.ByteBuffer abiBuffer) 把合约方法调用的data解码为Java对象
Tuple	decodeReturn(byte[] returnVals)
Tuple	decodeReturn(java.nio.ByteBuffer returnVals)
java.nio.ByteBuffer	encodeCall(Tuple args)
Function	encodeCall(Tuple args, java.nio.ByteBuffer dest, boolean validate)
java.nio.ByteBuffer	encodeCallWithArgs(java.lang.Object... args)
boolean	equals(java.lang.Object o)
static java.lang.String	formatCall(byte[] abiCall)
static java.lang.String	formatCall(byte[] buffer, int offset, int length) Returns a formatted string for a given ABI-encoded function call.
static Function	fromJson(java.lang.String functionJson)
static Function	fromJsonObject(com.google.gson.JsonObject function)
java.lang.String	getCanonicalSignature()
java.lang.String	getHashAlgorithm()
java.lang.String	getName()
TupleType	getOutputTypes()
TupleType	getParamTypes()
java.lang.String	getStateMutability()
Function.Type	getType()
int	hashCode()
static java.lang.String	hexOf(byte[] bytes)
static java.lang.String	hexOf(java.nio.ByteBuffer buffer)
static java.security.MessageDigest	newDefaultDigest()
static Function	parse(java.lang.String signature)
byte[]	selector()
java.lang.String	selectorHex()

从类继承的方法 java.lang.Object

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

字段详细资料

SELECTOR_LEN

public static final int SELECTOR_LEN

另请参阅:

常量字段值

构造器详细资料

Function

public Function(java.lang.String signature)
         throws java.text.ParseException

抛出:

java.text.ParseException

Function

public Function(java.lang.String signature,
                java.lang.String outputs)
         throws java.text.ParseException

抛出:

java.text.ParseException

Function

public Function(java.lang.String signature,
                java.lang.String outputs,
                java.security.MessageDigest messageDigest)
         throws java.text.ParseException

抛出:

java.text.ParseException

Function

public Function(Function.Type type,
                java.lang.String signature,
                java.lang.String outputs,
                java.security.MessageDigest messageDigest)
         throws java.text.ParseException

参数:

type - to denote function, constructor, or fallback

signature - the function signature

outputs - the signature of the tuple containing the return types

messageDigest - the hash function with which to generate the 4-byte selector

抛出:

java.text.ParseException - if signature or outputs is malformed

方法详细资料

getCanonicalSignature

public java.lang.String getCanonicalSignature()

getType

public Function.Type getType()

getName

public java.lang.String getName()

getParamTypes

public TupleType getParamTypes()

getOutputTypes

public TupleType getOutputTypes()

selector

public byte[] selector()

selectorHex

public java.lang.String selectorHex()

getHashAlgorithm

public java.lang.String getHashAlgorithm()

getStateMutability

public java.lang.String getStateMutability()

decodeReturn

public Tuple decodeReturn(byte[] returnVals)

decodeReturn

public Tuple decodeReturn(java.nio.ByteBuffer returnVals)

callLength

public int callLength(Tuple args)

callLength

public int callLength(Tuple args,
                      boolean validate)

encodeCallWithArgs

public java.nio.ByteBuffer encodeCallWithArgs(java.lang.Object... args)

encodeCall

public java.nio.ByteBuffer encodeCall(Tuple args)

encodeCall

public Function encodeCall(Tuple args,
                           java.nio.ByteBuffer dest,
                           boolean validate)

decodeCall

public Tuple decodeCall(byte[] array)

把合约方法调用的data解码为Java对象

参数:

array -

返回:

decodeCall

public Tuple decodeCall(java.nio.ByteBuffer abiBuffer)

把合约方法调用的data解码为Java对象

参数:

abiBuffer - 需要注意它的position

返回:

newDefaultDigest

public static java.security.MessageDigest newDefaultDigest()

hashCode

public int hashCode()

覆盖:

hashCode 在类中 java.lang.Object

equals

public boolean equals(java.lang.Object o)

覆盖:

equals 在类中 java.lang.Object

formatCall

public static java.lang.String formatCall(byte[] abiCall)

formatCall

public static java.lang.String formatCall(byte[] buffer,
                                          int offset,
                                          int length)

Returns a formatted string for a given ABI-encoded function call.

参数:

buffer - the buffer containing the ABI call

offset - the offset into the input buffer of the ABI call

length - the length of the ABI call

返回:

the formatted string

抛出:

java.lang.IllegalArgumentException - if the input length mod 32 != 4

parse

public static Function parse(java.lang.String signature)
                      throws java.text.ParseException

抛出:

java.text.ParseException

fromJson

public static Function fromJson(java.lang.String functionJson)
                         throws java.text.ParseException

抛出:

java.text.ParseException

fromJsonObject

public static Function fromJsonObject(com.google.gson.JsonObject function)
                               throws java.text.ParseException

抛出:

java.text.ParseException

hexOf

public static java.lang.String hexOf(byte[] bytes)

hexOf

public static java.lang.String hexOf(java.nio.ByteBuffer buffer)