Merge pull request #3570 from fjl/hexutil-zero-fix

common/hexutil: fix EncodeBig, Big.MarshalJSON
This commit is contained in:
Péter Szilágyi 2017-01-16 11:49:18 +02:00 committed by GitHub
commit 2a1a531ba3
3 changed files with 4 additions and 13 deletions

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@ -169,12 +169,7 @@ func EncodeBig(bigint *big.Int) string {
if nbits == 0 {
return "0x0"
}
enc := make([]byte, 2, (nbits/8)*2+2)
copy(enc, "0x")
for i := len(bigint.Bits()) - 1; i >= 0; i-- {
enc = strconv.AppendUint(enc, uint64(bigint.Bits()[i]), 16)
}
return string(enc)
return fmt.Sprintf("0x%x", bigint)
}
func has0xPrefix(input string) bool {

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@ -46,6 +46,7 @@ var (
{referenceBig("1"), "0x1"},
{referenceBig("ff"), "0xff"},
{referenceBig("112233445566778899aabbccddeeff"), "0x112233445566778899aabbccddeeff"},
{referenceBig("80a7f2c1bcc396c00"), "0x80a7f2c1bcc396c00"},
}
encodeUint64Tests = []marshalTest{

View File

@ -109,13 +109,8 @@ func (b *Big) MarshalJSON() ([]byte, error) {
if nbits == 0 {
return jsonZero, nil
}
enc := make([]byte, 3, (nbits/8)*2+4)
copy(enc, `"0x`)
for i := len(bigint.Bits()) - 1; i >= 0; i-- {
enc = strconv.AppendUint(enc, uint64(bigint.Bits()[i]), 16)
}
enc = append(enc, '"')
return enc, nil
enc := fmt.Sprintf(`"0x%x"`, bigint)
return []byte(enc), nil
}
// UnmarshalJSON implements json.Unmarshaler.