mirror of https://github.com/poanetwork/gecko.git
42 lines
770 B
Go
42 lines
770 B
Go
// (c) 2019-2020, Ava Labs, Inc. All rights reserved.
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// See the file LICENSE for licensing terms.
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package json
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import (
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"errors"
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"math"
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"strconv"
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)
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var (
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errTooLarge32 = errors.New("value overflowed uint32")
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)
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// Uint32 ...
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type Uint32 uint32
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// MarshalJSON ...
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func (u Uint32) MarshalJSON() ([]byte, error) {
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return []byte("\"" + strconv.FormatUint(uint64(u), 10) + "\""), nil
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}
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// UnmarshalJSON ...
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func (u *Uint32) UnmarshalJSON(b []byte) error {
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str := string(b)
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if str == "null" {
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return nil
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}
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if len(str) >= 2 {
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if lastIndex := len(str) - 1; str[0] == '"' && str[lastIndex] == '"' {
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str = str[1:lastIndex]
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}
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}
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val, err := strconv.ParseUint(str, 10, 0)
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if val > math.MaxUint32 {
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return errTooLarge32
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}
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*u = Uint32(val)
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return err
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}
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