58 lines
1.0 KiB
Go
58 lines
1.0 KiB
Go
package convx
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import (
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"errors"
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"math/big"
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)
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// interface 转 int64
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func ToInt64(val interface{}) (i int64, err error) {
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if val == nil {
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return 0, errors.New("value is nil")
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}
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switch v := val.(type) {
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case int:
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return int64(v), nil
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case int8:
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return int64(v), nil
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case int16:
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return int64(v), nil
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case int32:
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return int64(v), nil
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case int64:
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return v, nil
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case uint:
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return int64(v), nil
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case uint8:
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return int64(v), nil
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case uint16:
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return int64(v), nil
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case uint32:
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return int64(v), nil
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case uint64:
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return int64(v), nil
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case float32:
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return int64(v), nil
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case float64:
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return int64(v), nil
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case string:
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num := new(big.Float)
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_, ok := num.SetString(v)
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if !ok {
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return 0, errors.New("convx.ToInt64: out of range")
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}
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i, _ := num.Int64()
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// fmt.Println(val, i, b)
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return i, nil
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case bool:
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if v {
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return 1, nil
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} else {
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return 0, nil
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}
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}
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return 0, errors.New("convx.ToInt64: unknown type")
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}
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