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Merge pull request #3722 from fjl/hexutil-text-unmarshal

Browse Source 
common/hexutil: implement TextMarshaler, TextUnmarshaler
This commit is contained in:
Péter Szilágyi 2017-03-02 15:16:59 +02:00 committed by GitHub
commit 213b8f9af4
9 changed files with 275 additions and 114 deletions
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13
common/hexutil/hexutil.go
View File

@ -49,6 +49,7 @@ var (
ErrOddLength = errors.New("hex string has odd length")
ErrUint64Range = errors.New("hex number does not fit into 64 bits")
ErrUintRange = fmt.Errorf("hex number does not fit into %d bits", uintBits)
ErrBig256Range = errors.New("hex number does not fit into 256 bits")
)
// Decode decodes a hex string with 0x prefix.
@ -59,7 +60,11 @@ func Decode(input string) ([]byte, error) {
if !has0xPrefix(input) {
return nil, ErrMissingPrefix
}
return hex.DecodeString(input[2:])
b, err := hex.DecodeString(input[2:])
if err != nil {
err = mapError(err)
}
return b, err
}
// MustDecode decodes a hex string with 0x prefix. It panics for invalid input.
@ -126,11 +131,15 @@ func init() {
}
// DecodeBig decodes a hex string with 0x prefix as a quantity.
// Numbers larger than 256 bits are not accepted.
func DecodeBig(input string) (*big.Int, error) {
raw, err := checkNumber(input)
if err != nil {
return nil, err
}
if len(raw) > 64 {
return nil, ErrBig256Range
}
words := make([]big.Word, len(raw)/bigWordNibbles+1)
end := len(raw)
for i := range words {
@ -169,7 +178,7 @@ func EncodeBig(bigint *big.Int) string {
if nbits == 0 {
return "0x0"
}
return fmt.Sprintf("0x%x", bigint)
return fmt.Sprintf("%#x", bigint)
}
func has0xPrefix(input string) bool {

28
common/hexutil/hexutil_test.go
View File

@ -18,7 +18,6 @@ package hexutil
import (
"bytes"
"encoding/hex"
"math/big"
"testing"
)
@ -31,7 +30,8 @@ type marshalTest struct {
type unmarshalTest struct {
input string
want interface{}
wantErr error
wantErr error // if set, decoding must fail on any platform
wantErr32bit error // if set, decoding must fail on 32bit platforms (used for Uint tests)
}
var (
@ -47,6 +47,7 @@ var (
{referenceBig("ff"), "0xff"},
{referenceBig("112233445566778899aabbccddeeff"), "0x112233445566778899aabbccddeeff"},
{referenceBig("80a7f2c1bcc396c00"), "0x80a7f2c1bcc396c00"},
{referenceBig("-80a7f2c1bcc396c00"), "-0x80a7f2c1bcc396c00"},
}
encodeUint64Tests = []marshalTest{
@ -56,14 +57,21 @@ var (
{uint64(0x1122334455667788), "0x1122334455667788"},
}
encodeUintTests = []marshalTest{
{uint(0), "0x0"},
{uint(1), "0x1"},
{uint(0xff), "0xff"},
{uint(0x11223344), "0x11223344"},
}
decodeBytesTests = []unmarshalTest{
// invalid
{input: ``, wantErr: ErrEmptyString},
{input: `0`, wantErr: ErrMissingPrefix},
{input: `0x0`, wantErr: hex.ErrLength},
{input: `0x023`, wantErr: hex.ErrLength},
{input: `0xxx`, wantErr: hex.InvalidByteError('x')},
{input: `0x01zz01`, wantErr: hex.InvalidByteError('z')},
{input: `0x0`, wantErr: ErrOddLength},
{input: `0x023`, wantErr: ErrOddLength},
{input: `0xxx`, wantErr: ErrSyntax},
{input: `0x01zz01`, wantErr: ErrSyntax},
// valid
{input: `0x`, want: []byte{}},
{input: `0X`, want: []byte{}},
@ -83,6 +91,10 @@ var (
{input: `0x01`, wantErr: ErrLeadingZero},
{input: `0xx`, wantErr: ErrSyntax},
{input: `0x1zz01`, wantErr: ErrSyntax},
{
input: `0x10000000000000000000000000000000000000000000000000000000000000000`,
wantErr: ErrBig256Range,
},
// valid
{input: `0x0`, want: big.NewInt(0)},
{input: `0x2`, want: big.NewInt(0x2)},
@ -99,6 +111,10 @@ var (
input: `0xffffffffffffffffffffffffffffffffffff`,
want: referenceBig("ffffffffffffffffffffffffffffffffffff"),
},
{
input: `0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff`,
want: referenceBig("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"),
},
}
decodeUint64Tests = []unmarshalTest{

137
common/hexutil/json.go
View File

@ -25,28 +25,33 @@ import (
)
var (
jsonNull = []byte("null")
jsonZero = []byte(`"0x0"`)
textZero = []byte(`0x0`)
errNonString = errors.New("cannot unmarshal non-string as hex data")
errNegativeBigInt = errors.New("hexutil.Big: can't marshal negative integer")
)
// Bytes marshals/unmarshals as a JSON string with 0x prefix.
// The empty slice marshals as "0x".
type Bytes []byte
// MarshalJSON implements json.Marshaler.
func (b Bytes) MarshalJSON() ([]byte, error) {
result := make([]byte, len(b)*2+4)
copy(result, `"0x`)
hex.Encode(result[3:], b)
result[len(result)-1] = '"'
// MarshalText implements encoding.TextMarshaler
func (b Bytes) MarshalText() ([]byte, error) {
result := make([]byte, len(b)*2+2)
copy(result, `0x`)
hex.Encode(result[2:], b)
return result, nil
}
// UnmarshalJSON implements json.Unmarshaler.
func (b *Bytes) UnmarshalJSON(input []byte) error {
raw, err := checkJSON(input)
if !isString(input) {
return errNonString
}
return b.UnmarshalText(input[1 : len(input)-1])
}
// UnmarshalText implements encoding.TextUnmarshaler.
func (b *Bytes) UnmarshalText(input []byte) error {
raw, err := checkText(input)
if err != nil {
return err
}
@ -64,17 +69,11 @@ func (b Bytes) String() string {
return Encode(b)
}
// UnmarshalJSON decodes input as a JSON string with 0x prefix. The length of out
// 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
// UnmarshalJSON method for fixed-size types:
//
// type Foo [8]byte
//
// func (f *Foo) UnmarshalJSON(input []byte) error {
// return hexutil.UnmarshalJSON("Foo", input, f[:])
// }
func UnmarshalJSON(typname string, input, out []byte) error {
raw, err := checkJSON(input)
// UnmarshalText method for fixed-size types.
func UnmarshalFixedText(typname string, input, out []byte) error {
raw, err := checkText(input)
if err != nil {
return err
}
@ -91,34 +90,36 @@ func UnmarshalJSON(typname string, input, out []byte) error {
return nil
}
// Big marshals/unmarshals as a JSON string with 0x prefix. The zero value marshals as
// "0x0". Negative integers are not supported at this time. Attempting to marshal them
// will return an error.
// Big marshals/unmarshals as a JSON string with 0x prefix.
// The zero value marshals as "0x0".
//
// Negative integers are not supported at this time. Attempting to marshal them will
// return an error. Values larger than 256bits are rejected by Unmarshal but will be
// marshaled without error.
type Big big.Int
// MarshalJSON implements json.Marshaler.
func (b *Big) MarshalJSON() ([]byte, error) {
if b == nil {
return jsonNull, nil
}
bigint := (*big.Int)(b)
if bigint.Sign() == -1 {
return nil, errNegativeBigInt
}
nbits := bigint.BitLen()
if nbits == 0 {
return jsonZero, nil
}
enc := fmt.Sprintf(`"0x%x"`, bigint)
return []byte(enc), nil
// MarshalText implements encoding.TextMarshaler
func (b Big) MarshalText() ([]byte, error) {
return []byte(EncodeBig((*big.Int)(&b))), nil
}
// UnmarshalJSON implements json.Unmarshaler.
func (b *Big) UnmarshalJSON(input []byte) error {
raw, err := checkNumberJSON(input)
if !isString(input) {
return errNonString
}
return b.UnmarshalText(input[1 : len(input)-1])
}
// UnmarshalText implements encoding.TextUnmarshaler
func (b *Big) UnmarshalText(input []byte) error {
raw, err := checkNumberText(input)
if err != nil {
return err
}
if len(raw) > 64 {
return ErrBig256Range
}
words := make([]big.Word, len(raw)/bigWordNibbles+1)
end := len(raw)
for i := range words {
@ -156,18 +157,25 @@ func (b *Big) String() string {
// The zero value marshals as "0x0".
type Uint64 uint64
// MarshalJSON implements json.Marshaler.
func (b Uint64) MarshalJSON() ([]byte, error) {
buf := make([]byte, 3, 12)
copy(buf, `"0x`)
// MarshalText implements encoding.TextMarshaler.
func (b Uint64) MarshalText() ([]byte, error) {
buf := make([]byte, 2, 10)
copy(buf, `0x`)
buf = strconv.AppendUint(buf, uint64(b), 16)
buf = append(buf, '"')
return buf, nil
}
// UnmarshalJSON implements json.Unmarshaler.
func (b *Uint64) UnmarshalJSON(input []byte) error {
raw, err := checkNumberJSON(input)
if !isString(input) {
return errNonString
}
return b.UnmarshalText(input[1 : len(input)-1])
}
// UnmarshalText implements encoding.TextUnmarshaler
func (b *Uint64) UnmarshalText(input []byte) error {
raw, err := checkNumberText(input)
if err != nil {
return err
}
@ -196,19 +204,27 @@ func (b Uint64) String() string {
// The zero value marshals as "0x0".
type Uint uint
// MarshalJSON implements json.Marshaler.
func (b Uint) MarshalJSON() ([]byte, error) {
return Uint64(b).MarshalJSON()
// MarshalText implements encoding.TextMarshaler.
func (b Uint) MarshalText() ([]byte, error) {
return Uint64(b).MarshalText()
}
// UnmarshalJSON implements json.Unmarshaler.
func (b *Uint) UnmarshalJSON(input []byte) error {
if !isString(input) {
return errNonString
}
return b.UnmarshalText(input[1 : len(input)-1])
}
// UnmarshalText implements encoding.TextUnmarshaler.
func (b *Uint) UnmarshalText(input []byte) error {
var u64 Uint64
err := u64.UnmarshalJSON(input)
if err != nil {
return err
} else if u64 > Uint64(^uint(0)) {
err := u64.UnmarshalText(input)
if u64 > Uint64(^uint(0)) || err == ErrUint64Range {
return ErrUintRange
} else if err != nil {
return err
}
*b = Uint(u64)
return nil
@ -227,28 +243,21 @@ func bytesHave0xPrefix(input []byte) bool {
return len(input) >= 2 && input[0] == '0' && (input[1] == 'x' || input[1] == 'X')
}
func checkJSON(input []byte) (raw []byte, err error) {
if !isString(input) {
return nil, errNonString
}
if len(input) == 2 {
func checkText(input []byte) ([]byte, error) {
if len(input) == 0 {
return nil, nil // empty strings are allowed
}
if !bytesHave0xPrefix(input[1:]) {
if !bytesHave0xPrefix(input) {
return nil, ErrMissingPrefix
}
input = input[3 : len(input)-1]
input = input[2:]
if len(input)%2 != 0 {
return nil, ErrOddLength
}
return input, nil
}
func checkNumberJSON(input []byte) (raw []byte, err error) {
if !isString(input) {
return nil, errNonString
}
input = input[1 : len(input)-1]
func checkNumberText(input []byte) (raw []byte, err error) {
if len(input) == 0 {
return nil, nil // empty strings are allowed
}

45
common/hexutil/json_example_test.go Normal file
View File

@ -0,0 +1,45 @@
// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package hexutil_test
import (
"encoding/json"
"fmt"
"github.com/ethereum/go-ethereum/common/hexutil"
)
type MyType [5]byte
func (v *MyType) UnmarshalText(input []byte) error {
return hexutil.UnmarshalFixedText("MyType", input, v[:])
}
func (v MyType) String() string {
return hexutil.Bytes(v[:]).String()
}
func ExampleUnmarshalFixedText() {
var v1, v2 MyType
fmt.Println("v1 error:", json.Unmarshal([]byte(`"0x01"`), &v1))
fmt.Println("v2 error:", json.Unmarshal([]byte(`"0x0101010101"`), &v2))
fmt.Println("v2:", v2)
// Output:
// v1 error: hex string has length 2, want 10 for MyType
// v2 error: <nil>
// v2: 0x0101010101
}

99
common/hexutil/json_test.go
View File

@ -19,6 +19,8 @@ package hexutil
import (
"bytes"
"encoding/hex"
"encoding/json"
"errors"
"math/big"
"testing"
)
@ -55,9 +57,11 @@ func referenceBytes(s string) []byte {
return b
}
var errJSONEOF = errors.New("unexpected end of JSON input")
var unmarshalBytesTests = []unmarshalTest{
// invalid encoding
{input: "", wantErr: errNonString},
{input: "", wantErr: errJSONEOF},
{input: "null", wantErr: errNonString},
{input: "10", wantErr: errNonString},
{input: `"0"`, wantErr: ErrMissingPrefix},
@ -80,7 +84,7 @@ var unmarshalBytesTests = []unmarshalTest{
func TestUnmarshalBytes(t *testing.T) {
for _, test := range unmarshalBytesTests {
var v Bytes
err := v.UnmarshalJSON([]byte(test.input))
err := json.Unmarshal([]byte(test.input), &v)
if !checkError(t, test.input, err, test.wantErr) {
continue
}
@ -104,7 +108,7 @@ func BenchmarkUnmarshalBytes(b *testing.B) {
func TestMarshalBytes(t *testing.T) {
for _, test := range encodeBytesTests {
in := test.input.([]byte)
out, err := Bytes(in).MarshalJSON()
out, err := json.Marshal(Bytes(in))
if err != nil {
t.Errorf("%x: %v", in, err)
continue
@ -122,7 +126,7 @@ func TestMarshalBytes(t *testing.T) {
var unmarshalBigTests = []unmarshalTest{
// invalid encoding
{input: "", wantErr: errNonString},
{input: "", wantErr: errJSONEOF},
{input: "null", wantErr: errNonString},
{input: "10", wantErr: errNonString},
{input: `"0"`, wantErr: ErrMissingPrefix},
@ -130,6 +134,10 @@ var unmarshalBigTests = []unmarshalTest{
{input: `"0x01"`, wantErr: ErrLeadingZero},
{input: `"0xx"`, wantErr: ErrSyntax},
{input: `"0x1zz01"`, wantErr: ErrSyntax},
{
input: `"0x10000000000000000000000000000000000000000000000000000000000000000"`,
wantErr: ErrBig256Range,
},
// valid encoding
{input: `""`, want: big.NewInt(0)},
@ -148,12 +156,16 @@ var unmarshalBigTests = []unmarshalTest{
input: `"0xffffffffffffffffffffffffffffffffffff"`,
want: referenceBig("ffffffffffffffffffffffffffffffffffff"),
},
{
input: `"0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"`,
want: referenceBig("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"),
},
}
func TestUnmarshalBig(t *testing.T) {
for _, test := range unmarshalBigTests {
var v Big
err := v.UnmarshalJSON([]byte(test.input))
err := json.Unmarshal([]byte(test.input), &v)
if !checkError(t, test.input, err, test.wantErr) {
continue
}
@ -177,7 +189,7 @@ func BenchmarkUnmarshalBig(b *testing.B) {
func TestMarshalBig(t *testing.T) {
for _, test := range encodeBigTests {
in := test.input.(*big.Int)
out, err := (*Big)(in).MarshalJSON()
out, err := json.Marshal((*Big)(in))
if err != nil {
t.Errorf("%d: %v", in, err)
continue
@ -195,7 +207,7 @@ func TestMarshalBig(t *testing.T) {
var unmarshalUint64Tests = []unmarshalTest{
// invalid encoding
{input: "", wantErr: errNonString},
{input: "", wantErr: errJSONEOF},
{input: "null", wantErr: errNonString},
{input: "10", wantErr: errNonString},
{input: `"0"`, wantErr: ErrMissingPrefix},
@ -219,7 +231,7 @@ var unmarshalUint64Tests = []unmarshalTest{
func TestUnmarshalUint64(t *testing.T) {
for _, test := range unmarshalUint64Tests {
var v Uint64
err := v.UnmarshalJSON([]byte(test.input))
err := json.Unmarshal([]byte(test.input), &v)
if !checkError(t, test.input, err, test.wantErr) {
continue
}
@ -241,7 +253,7 @@ func BenchmarkUnmarshalUint64(b *testing.B) {
func TestMarshalUint64(t *testing.T) {
for _, test := range encodeUint64Tests {
in := test.input.(uint64)
out, err := Uint64(in).MarshalJSON()
out, err := json.Marshal(Uint64(in))
if err != nil {
t.Errorf("%d: %v", in, err)
continue
@ -256,3 +268,72 @@ func TestMarshalUint64(t *testing.T) {
}
}
}
func TestMarshalUint(t *testing.T) {
for _, test := range encodeUintTests {
in := test.input.(uint)
out, err := json.Marshal(Uint(in))
if err != nil {
t.Errorf("%d: %v", in, err)
continue
}
if want := `"` + test.want + `"`; string(out) != want {
t.Errorf("%d: MarshalJSON output mismatch: got %q, want %q", in, out, want)
continue
}
if out := (Uint)(in).String(); out != test.want {
t.Errorf("%x: String mismatch: got %q, want %q", in, out, test.want)
continue
}
}
}
var (
// These are variables (not constants) to avoid constant overflow
// checks in the compiler on 32bit platforms.
maxUint33bits = uint64(^uint32(0)) + 1
maxUint64bits = ^uint64(0)
)
var unmarshalUintTests = []unmarshalTest{
// invalid encoding
{input: "", wantErr: errJSONEOF},
{input: "null", wantErr: errNonString},
{input: "10", wantErr: errNonString},
{input: `"0"`, wantErr: ErrMissingPrefix},
{input: `"0x"`, wantErr: ErrEmptyNumber},
{input: `"0x01"`, wantErr: ErrLeadingZero},
{input: `"0x100000000"`, want: uint(maxUint33bits), wantErr32bit: ErrUintRange},
{input: `"0xfffffffffffffffff"`, wantErr: ErrUintRange},
{input: `"0xx"`, wantErr: ErrSyntax},
{input: `"0x1zz01"`, wantErr: ErrSyntax},
// valid encoding
{input: `""`, want: uint(0)},
{input: `"0x0"`, want: uint(0)},
{input: `"0x2"`, want: uint(0x2)},
{input: `"0x2F2"`, want: uint(0x2f2)},
{input: `"0X2F2"`, want: uint(0x2f2)},
{input: `"0x1122aaff"`, want: uint(0x1122aaff)},
{input: `"0xbbb"`, want: uint(0xbbb)},
{input: `"0xffffffff"`, want: uint(0xffffffff)},
{input: `"0xffffffffffffffff"`, want: uint(maxUint64bits), wantErr32bit: ErrUintRange},
}
func TestUnmarshalUint(t *testing.T) {
for _, test := range unmarshalUintTests {
var v Uint
err := json.Unmarshal([]byte(test.input), &v)
if uintBits == 32 && test.wantErr32bit != nil {
checkError(t, test.input, err, test.wantErr32bit)
continue
}
if !checkError(t, test.input, err, test.wantErr) {
continue
}
if uint(v) != test.want.(uint) {
t.Errorf("input %s: value mismatch: got %d, want %d", test.input, v, test.want)
continue
}
}
}

24
common/types.go
View File

@ -71,14 +71,14 @@ func (h Hash) Format(s fmt.State, c rune) {
fmt.Fprintf(s, "%"+string(c), h[:])
}
// UnmarshalJSON parses a hash in its hex from to a hash.
func (h *Hash) UnmarshalJSON(input []byte) error {
return hexutil.UnmarshalJSON("Hash", input, h[:])
// UnmarshalText parses a hash in hex syntax.
func (h *Hash) UnmarshalText(input []byte) error {
return hexutil.UnmarshalFixedText("Hash", input, h[:])
}
// Serialize given hash to JSON
func (h Hash) MarshalJSON() ([]byte, error) {
return hexutil.Bytes(h[:]).MarshalJSON()
// MarshalText returns the hex representation of h.
func (h Hash) MarshalText() ([]byte, error) {
return hexutil.Bytes(h[:]).MarshalText()
}
// Sets the hash to the value of b. If b is larger than len(h) it will panic
@ -171,14 +171,14 @@ func (a *Address) Set(other Address) {
}
}
// Serialize given address to JSON
func (a Address) MarshalJSON() ([]byte, error) {
return hexutil.Bytes(a[:]).MarshalJSON()
// MarshalText returns the hex representation of a.
func (a Address) MarshalText() ([]byte, error) {
return hexutil.Bytes(a[:]).MarshalText()
}
// Parse address from raw json data
func (a *Address) UnmarshalJSON(input []byte) error {
return hexutil.UnmarshalJSON("Address", input, a[:])
// UnmarshalText parses a hash in hex syntax.
func (a *Address) UnmarshalText(input []byte) error {
return hexutil.UnmarshalFixedText("Address", input, a[:])
}
// PP Pretty Prints a byte slice in the following format:

13
common/types_test.go
View File

@ -17,6 +17,7 @@
package common
import (
"encoding/json"
"math/big"
"strings"
"testing"
@ -37,7 +38,6 @@ func TestBytesConversion(t *testing.T) {
}
func TestHashJsonValidation(t *testing.T) {
var h Hash
var tests = []struct {
Prefix string
Size int
@ -52,7 +52,8 @@ func TestHashJsonValidation(t *testing.T) {
}
for _, test := range tests {
input := `"` + test.Prefix + strings.Repeat("0", test.Size) + `"`
err := h.UnmarshalJSON([]byte(input))
var v Hash
err := json.Unmarshal([]byte(input), &v)
if err == nil {
if test.Error != "" {
t.Errorf("%s: error mismatch: have nil, want %q", input, test.Error)
@ -66,7 +67,6 @@ func TestHashJsonValidation(t *testing.T) {
}
func TestAddressUnmarshalJSON(t *testing.T) {
var a Address
var tests = []struct {
Input string
ShouldErr bool
@ -81,7 +81,8 @@ func TestAddressUnmarshalJSON(t *testing.T) {
{`"0x0000000000000000000000000000000000000010"`, false, big.NewInt(16)},
}
for i, test := range tests {
err := a.UnmarshalJSON([]byte(test.Input))
var v Address
err := json.Unmarshal([]byte(test.Input), &v)
if err != nil && !test.ShouldErr {
t.Errorf("test #%d: unexpected error: %v", i, err)
}
@ -89,8 +90,8 @@ func TestAddressUnmarshalJSON(t *testing.T) {
if test.ShouldErr {
t.Errorf("test #%d: expected error, got none", i)
}
if a.Big().Cmp(test.Output) != 0 {
t.Errorf("test #%d: address mismatch: have %v, want %v", i, a.Big(), test.Output)
if v.Big().Cmp(test.Output) != 0 {
t.Errorf("test #%d: address mismatch: have %v, want %v", i, v.Big(), test.Output)
}
}
}

12
core/types/block.go
View File

@ -62,14 +62,14 @@ func (n BlockNonce) Uint64() uint64 {
return binary.BigEndian.Uint64(n[:])
}
// MarshalJSON implements json.Marshaler
func (n BlockNonce) MarshalJSON() ([]byte, error) {
return hexutil.Bytes(n[:]).MarshalJSON()
// MarshalText encodes n as a hex string with 0x prefix.
func (n BlockNonce) MarshalText() ([]byte, error) {
return hexutil.Bytes(n[:]).MarshalText()
}
// UnmarshalJSON implements json.Unmarshaler
func (n *BlockNonce) UnmarshalJSON(input []byte) error {
return hexutil.UnmarshalJSON("BlockNonce", input, n[:])
// UnmarshalText implements encoding.TextUnmarshaler.
func (n *BlockNonce) UnmarshalText(input []byte) error {
return hexutil.UnmarshalFixedText("BlockNonce", input, n[:])
}
// Header represents a block header in the Ethereum blockchain.

12
core/types/bloom9.go
View File

@ -75,14 +75,14 @@ func (b Bloom) TestBytes(test []byte) bool {
}
// MarshalJSON encodes b as a hex string with 0x prefix.
func (b Bloom) MarshalJSON() ([]byte, error) {
return hexutil.Bytes(b[:]).MarshalJSON()
// MarshalText encodes b as a hex string with 0x prefix.
func (b Bloom) MarshalText() ([]byte, error) {
return hexutil.Bytes(b[:]).MarshalText()
}
// UnmarshalJSON b as a hex string with 0x prefix.
func (b *Bloom) UnmarshalJSON(input []byte) error {
return hexutil.UnmarshalJSON("Bloom", input, b[:])
// UnmarshalText b as a hex string with 0x prefix.
func (b *Bloom) UnmarshalText(input []byte) error {
return hexutil.UnmarshalFixedText("Bloom", input, b[:])
}
func CreateBloom(receipts Receipts) Bloom {