Documentation
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Overview ¶
Package hexutil implements hex encoding with 0x prefix. This encoding is used by the Ethereum RPC API to transport binary data in JSON payloads.
Index ¶
- Variables
- func Decode(input string) ([]byte, error)
- func DecodeBig(input string) (*big.Int, error)
- func DecodeUint64(input string) (uint64, error)
- func Encode(b []byte) string
- func EncodeBig(bigint *big.Int) string
- func EncodeUint64(i uint64) string
- func MustDecode(input string) []byte
- func MustDecodeBig(input string) *big.Int
- func MustDecodeUint64(input string) uint64
- func MustParseBig256(s string) *big.Int
- func UnmarshalFixedJSON(typ reflect.Type, input, out []byte) error
- func UnmarshalFixedText(typname string, input, out []byte) error
- func UnmarshalFixedUnprefixedText(typname string, input, out []byte) error
- type Big
- type Bytes
- type Uint
- type Uint64
Constants ¶
This section is empty.
Variables ¶
var ( ErrEmptyString = &decError{"empty hex string"} ErrSyntax = &decError{"invalid hex string"} ErrMissingPrefix = &decError{"hex string without 0x prefix"} ErrOddLength = &decError{"hex string of odd length"} ErrEmptyNumber = &decError{"hex string \"0x\""} ErrLeadingZero = &decError{"hex number with leading zero digits"} ErrUint64Range = &decError{"hex number > 64 bits"} ErrUintRange = &decError{fmt.Sprintf("hex number > %d bits", uintBits)} ErrBig256Range = &decError{"hex number > 256 bits"} )
Errors
Functions ¶
func DecodeBig ¶
DecodeBig decodes a hex string with 0x prefix as a quantity. Numbers larger than 256 bits are not accepted.
func DecodeUint64 ¶
DecodeUint64 decodes a hex string with 0x prefix as a quantity.
func EncodeUint64 ¶
EncodeUint64 encodes i as a hex string with 0x prefix.
func MustDecode ¶
MustDecode decodes a hex string with 0x prefix. It panics for invalid input.
func MustDecodeBig ¶
MustDecodeBig decodes a hex string with 0x prefix as a quantity. It panics for invalid input.
func MustDecodeUint64 ¶
MustDecodeUint64 decodes a hex string with 0x prefix as a quantity. It panics for invalid input.
func MustParseBig256 ¶
MustParseBig256 parses s as a 256 bit big integer and panics if the string is invalid.
func UnmarshalFixedJSON ¶
UnmarshalFixedJSON decodes the input as a string with 0x prefix. The length of out determines the required input length. This function is commonly used to implement the UnmarshalJSON method for fixed-size types.
func UnmarshalFixedText ¶
UnmarshalFixedText decodes the input as a string with 0x prefix. The length of out determines the required input length. This function is commonly used to implement the UnmarshalText method for fixed-size types.
func UnmarshalFixedUnprefixedText ¶
UnmarshalFixedUnprefixedText decodes the input as a string with optional 0x prefix. The length of out determines the required input length. This function is commonly used to implement the UnmarshalText method for fixed-size types.
Types ¶
type Big ¶
Big marshals/unmarshals as a JSON string with 0x prefix. The zero value marshals as "0x0".
func (Big) MarshalText ¶
MarshalText implements encoding.TextMarshaler
func (*Big) UnmarshalJSON ¶
UnmarshalJSON implements json.Unmarshaler.
func (*Big) UnmarshalText ¶
UnmarshalText implements encoding.TextUnmarshaler
type Bytes ¶
type Bytes []byte
Bytes marshals/unmarshals as a JSON string with 0x prefix. The empty slice marshals as "0x".
func (Bytes) MarshalText ¶
MarshalText implements encoding.TextMarshaler
func (*Bytes) UnmarshalJSON ¶
UnmarshalJSON implements json.Unmarshaler.
func (*Bytes) UnmarshalText ¶
UnmarshalText implements encoding.TextUnmarshaler.
type Uint ¶
type Uint uint
Uint marshals/unmarshals as a JSON string with 0x prefix. The zero value marshals as "0x0".
func (Uint) MarshalText ¶
MarshalText implements encoding.TextMarshaler.
func (*Uint) UnmarshalJSON ¶
UnmarshalJSON implements json.Unmarshaler.
func (*Uint) UnmarshalText ¶
UnmarshalText implements encoding.TextUnmarshaler.
type Uint64 ¶
type Uint64 uint64
Uint64 marshals/unmarshals as a JSON string with 0x prefix. The zero value marshals as "0x0".
func (Uint64) MarshalText ¶
MarshalText implements encoding.TextMarshaler.
func (*Uint64) UnmarshalJSON ¶
UnmarshalJSON implements json.Unmarshaler.
func (*Uint64) UnmarshalText ¶
UnmarshalText implements encoding.TextUnmarshaler
Source Files