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float8.go
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float8.go
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//nolint:revive
package schema
import (
"fmt"
"math"
"strconv"
)
type Float8Transformer interface {
TransformFloat8(*Float8) any
}
type Float8 struct {
Float float64
Status Status
}
const float64EqualityThreshold = 1e-9
func (dst *Float8) GetStatus() Status {
return dst.Status
}
func (*Float8) Type() ValueType {
return TypeFloat
}
func (dst *Float8) Size() int {
return 8
}
func (dst *Float8) String() string {
if dst.Status == Present {
return strconv.FormatFloat(dst.Float, 'f', -1, 64)
} else {
return ""
}
}
func (dst *Float8) Equal(src CQType) bool {
if src == nil {
return false
}
s, ok := src.(*Float8)
if !ok {
return false
}
if dst.Status != s.Status {
return false
}
return math.Abs(dst.Float-s.Float) <= float64EqualityThreshold
}
func (dst *Float8) Set(src any) error {
if src == nil {
*dst = Float8{Status: Null}
return nil
}
if value, ok := src.(interface{ Get() any }); ok {
value2 := value.Get()
if value2 != value {
return dst.Set(value2)
}
}
switch value := src.(type) {
case float32:
*dst = Float8{Float: float64(value), Status: Present}
case float64:
*dst = Float8{Float: value, Status: Present}
case int8:
*dst = Float8{Float: float64(value), Status: Present}
case uint8:
*dst = Float8{Float: float64(value), Status: Present}
case int16:
*dst = Float8{Float: float64(value), Status: Present}
case uint16:
*dst = Float8{Float: float64(value), Status: Present}
case int32:
*dst = Float8{Float: float64(value), Status: Present}
case uint32:
*dst = Float8{Float: float64(value), Status: Present}
case int64:
f64 := float64(value)
if int64(f64) == value {
*dst = Float8{Float: f64, Status: Present}
} else {
return fmt.Errorf("%v cannot be exactly represented as float64", value)
}
case uint64:
f64 := float64(value)
if uint64(f64) == value {
*dst = Float8{Float: f64, Status: Present}
} else {
return fmt.Errorf("%v cannot be exactly represented as float64", value)
}
case int:
f64 := float64(value)
if int(f64) == value {
*dst = Float8{Float: f64, Status: Present}
} else {
return fmt.Errorf("%v cannot be exactly represented as float64", value)
}
case uint:
f64 := float64(value)
if uint(f64) == value {
*dst = Float8{Float: f64, Status: Present}
} else {
return fmt.Errorf("%v cannot be exactly represented as float64", value)
}
case string:
num, err := strconv.ParseFloat(value, 64)
if err != nil {
return err
}
*dst = Float8{Float: num, Status: Present}
case *float64:
if value == nil {
*dst = Float8{Status: Null}
} else {
return dst.Set(*value)
}
case *float32:
if value == nil {
*dst = Float8{Status: Null}
} else {
return dst.Set(*value)
}
case *int8:
if value == nil {
*dst = Float8{Status: Null}
} else {
return dst.Set(*value)
}
case *uint8:
if value == nil {
*dst = Float8{Status: Null}
} else {
return dst.Set(*value)
}
case *int16:
if value == nil {
*dst = Float8{Status: Null}
} else {
return dst.Set(*value)
}
case *uint16:
if value == nil {
*dst = Float8{Status: Null}
} else {
return dst.Set(*value)
}
case *int32:
if value == nil {
*dst = Float8{Status: Null}
} else {
return dst.Set(*value)
}
case *uint32:
if value == nil {
*dst = Float8{Status: Null}
} else {
return dst.Set(*value)
}
case *int64:
if value == nil {
*dst = Float8{Status: Null}
} else {
return dst.Set(*value)
}
case *uint64:
if value == nil {
*dst = Float8{Status: Null}
} else {
return dst.Set(*value)
}
case *int:
if value == nil {
*dst = Float8{Status: Null}
} else {
return dst.Set(*value)
}
case *uint:
if value == nil {
*dst = Float8{Status: Null}
} else {
return dst.Set(*value)
}
case *string:
if value == nil {
*dst = Float8{Status: Null}
} else {
return dst.Set(*value)
}
default:
if originalSrc, ok := underlyingNumberType(src); ok {
return dst.Set(originalSrc)
}
return fmt.Errorf("cannot convert %v to Float8", value)
}
return nil
}
func (dst Float8) Get() any {
switch dst.Status {
case Present:
return dst.Float
case Null:
return nil
default:
return dst.Status
}
}