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package pgtype
import (
"database/sql/driver"
"encoding/binary"
"fmt"
"math"
"strconv"
"strings"
"github.com/jackc/pgio"
)
type Circle struct {
P Vec2
R float64
Status Status
}
func (dst *Circle) Set(src interface{}) error {
return fmt.Errorf("cannot convert %v to Circle", src)
}
func (dst Circle) Get() interface{} {
switch dst.Status {
case Present:
return dst
case Null:
return nil
default:
return dst.Status
}
}
func (src *Circle) AssignTo(dst interface{}) error {
return fmt.Errorf("cannot assign %v to %T", src, dst)
}
func (dst *Circle) DecodeText(ci *ConnInfo, src []byte) error {
if src == nil {
*dst = Circle{Status: Null}
return nil
}
if len(src) < 9 {
return fmt.Errorf("invalid length for Circle: %v", len(src))
}
str := string(src[2:])
end := strings.IndexByte(str, ',')
x, err := strconv.ParseFloat(str[:end], 64)
if err != nil {
return err
}
str = str[end+1:]
end = strings.IndexByte(str, ')')
y, err := strconv.ParseFloat(str[:end], 64)
if err != nil {
return err
}
str = str[end+2 : len(str)-1]
r, err := strconv.ParseFloat(str, 64)
if err != nil {
return err
}
*dst = Circle{P: Vec2{x, y}, R: r, Status: Present}
return nil
}
func (dst *Circle) DecodeBinary(ci *ConnInfo, src []byte) error {
if src == nil {
*dst = Circle{Status: Null}
return nil
}
if len(src) != 24 {
return fmt.Errorf("invalid length for Circle: %v", len(src))
}
x := binary.BigEndian.Uint64(src)
y := binary.BigEndian.Uint64(src[8:])
r := binary.BigEndian.Uint64(src[16:])
*dst = Circle{
P: Vec2{math.Float64frombits(x), math.Float64frombits(y)},
R: math.Float64frombits(r),
Status: Present,
}
return nil
}
func (src Circle) EncodeText(ci *ConnInfo, buf []byte) ([]byte, error) {
switch src.Status {
case Null:
return nil, nil
case Undefined:
return nil, errUndefined
}
buf = append(buf, fmt.Sprintf(`<(%s,%s),%s>`,
strconv.FormatFloat(src.P.X, 'f', -1, 64),
strconv.FormatFloat(src.P.Y, 'f', -1, 64),
strconv.FormatFloat(src.R, 'f', -1, 64),
)...)
return buf, nil
}
func (src Circle) EncodeBinary(ci *ConnInfo, buf []byte) ([]byte, error) {
switch src.Status {
case Null:
return nil, nil
case Undefined:
return nil, errUndefined
}
buf = pgio.AppendUint64(buf, math.Float64bits(src.P.X))
buf = pgio.AppendUint64(buf, math.Float64bits(src.P.Y))
buf = pgio.AppendUint64(buf, math.Float64bits(src.R))
return buf, nil
}
// Scan implements the database/sql Scanner interface.
func (dst *Circle) Scan(src interface{}) error {
if src == nil {
*dst = Circle{Status: Null}
return nil
}
switch src := src.(type) {
case string:
return dst.DecodeText(nil, []byte(src))
case []byte:
srcCopy := make([]byte, len(src))
copy(srcCopy, src)
return dst.DecodeText(nil, srcCopy)
}
return fmt.Errorf("cannot scan %T", src)
}
// Value implements the database/sql/driver Valuer interface.
func (src Circle) Value() (driver.Value, error) {
return EncodeValueText(src)
}
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