mirror of https://github.com/poanetwork/quorum.git
109 lines
2.8 KiB
Go
109 lines
2.8 KiB
Go
// Copyright 2016 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 types
|
|
|
|
import (
|
|
"encoding/hex"
|
|
"fmt"
|
|
"math/big"
|
|
)
|
|
|
|
// JSON unmarshaling utilities.
|
|
|
|
type hexBytes []byte
|
|
|
|
func (b *hexBytes) MarshalJSON() ([]byte, error) {
|
|
if b != nil {
|
|
return []byte(fmt.Sprintf(`"0x%x"`, []byte(*b))), nil
|
|
}
|
|
return nil, nil
|
|
}
|
|
|
|
func (b *hexBytes) UnmarshalJSON(input []byte) error {
|
|
if len(input) < 2 || input[0] != '"' || input[len(input)-1] != '"' {
|
|
return fmt.Errorf("cannot unmarshal non-string into hexBytes")
|
|
}
|
|
input = input[1 : len(input)-1]
|
|
if len(input) < 2 || input[0] != '0' || input[1] != 'x' {
|
|
return fmt.Errorf("missing 0x prefix in hexBytes input %q", input)
|
|
}
|
|
dec := make(hexBytes, (len(input)-2)/2)
|
|
if _, err := hex.Decode(dec, input[2:]); err != nil {
|
|
return err
|
|
}
|
|
*b = dec
|
|
return nil
|
|
}
|
|
|
|
type hexBig big.Int
|
|
|
|
func (b *hexBig) MarshalJSON() ([]byte, error) {
|
|
if b != nil {
|
|
return []byte(fmt.Sprintf(`"0x%x"`, (*big.Int)(b))), nil
|
|
}
|
|
return nil, nil
|
|
}
|
|
|
|
func (b *hexBig) UnmarshalJSON(input []byte) error {
|
|
raw, err := checkHexNumber(input)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
dec, ok := new(big.Int).SetString(string(raw), 16)
|
|
if !ok {
|
|
return fmt.Errorf("invalid hex number")
|
|
}
|
|
*b = (hexBig)(*dec)
|
|
return nil
|
|
}
|
|
|
|
type hexUint64 uint64
|
|
|
|
func (b *hexUint64) MarshalJSON() ([]byte, error) {
|
|
if b != nil {
|
|
return []byte(fmt.Sprintf(`"0x%x"`, *(*uint64)(b))), nil
|
|
}
|
|
return nil, nil
|
|
}
|
|
|
|
func (b *hexUint64) UnmarshalJSON(input []byte) error {
|
|
raw, err := checkHexNumber(input)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
_, err = fmt.Sscanf(string(raw), "%x", b)
|
|
return err
|
|
}
|
|
|
|
func checkHexNumber(input []byte) (raw []byte, err error) {
|
|
if len(input) < 2 || input[0] != '"' || input[len(input)-1] != '"' {
|
|
return nil, fmt.Errorf("cannot unmarshal non-string into hex number")
|
|
}
|
|
input = input[1 : len(input)-1]
|
|
if len(input) < 2 || input[0] != '0' || input[1] != 'x' {
|
|
return nil, fmt.Errorf("missing 0x prefix in hex number input %q", input)
|
|
}
|
|
if len(input) == 2 {
|
|
return nil, fmt.Errorf("empty hex number")
|
|
}
|
|
raw = input[2:]
|
|
if len(raw)%2 != 0 {
|
|
raw = append([]byte{'0'}, raw...)
|
|
}
|
|
return raw, nil
|
|
}
|