Convert float4 and float8 to Codec

pgtype/zeronull/float8.go

@@ -8,68 +8,29 @@ import (
 
 type Float8 float64
 
-func (dst *Float8) DecodeText(ci *pgtype.ConnInfo, src []byte) error {
-	var nullable pgtype.Float8
-	err := nullable.DecodeText(ci, src)
-	if err != nil {
-		return err
+// ScanFloat64 implements the Float64Scanner interface.
+func (f *Float8) ScanFloat64(n pgtype.Float8) error {
+	if !n.Valid {
+		*f = 0
+		return nil
 	}
 
-	if nullable.Valid {
-		*dst = Float8(nullable.Float)
-	} else {
-		*dst = 0
-	}
+	*f = Float8(n.Float)
 
 	return nil
 }
 
-func (dst *Float8) DecodeBinary(ci *pgtype.ConnInfo, src []byte) error {
-	var nullable pgtype.Float8
-	err := nullable.DecodeBinary(ci, src)
-	if err != nil {
-		return err
+func (f Float8) Float64Value() (pgtype.Float8, error) {
+	if f == 0 {
+		return pgtype.Float8{}, nil
 	}
-
-	if nullable.Valid {
-		*dst = Float8(nullable.Float)
-	} else {
-		*dst = 0
-	}
-
-	return nil
-}
-
-func (src Float8) EncodeText(ci *pgtype.ConnInfo, buf []byte) ([]byte, error) {
-	if src == 0 {
-		return nil, nil
-	}
-
-	nullable := pgtype.Float8{
-		Float: float64(src),
-		Valid: true,
-	}
-
-	return nullable.EncodeText(ci, buf)
-}
-
-func (src Float8) EncodeBinary(ci *pgtype.ConnInfo, buf []byte) ([]byte, error) {
-	if src == 0 {
-		return nil, nil
-	}
-
-	nullable := pgtype.Float8{
-		Float: float64(src),
-		Valid: true,
-	}
-
-	return nullable.EncodeBinary(ci, buf)
+	return pgtype.Float8{Float: float64(f), Valid: true}, nil
 }
 
 // Scan implements the database/sql Scanner interface.
-func (dst *Float8) Scan(src interface{}) error {
+func (f *Float8) Scan(src interface{}) error {
 	if src == nil {
-		*dst = 0
+		*f = 0
 		return nil
 	}
 
@@ -79,12 +40,15 @@ func (dst *Float8) Scan(src interface{}) error {
 		return err
 	}
 
-	*dst = Float8(nullable.Float)
+	*f = Float8(nullable.Float)
 
 	return nil
 }
 
 // Value implements the database/sql/driver Valuer interface.
-func (src Float8) Value() (driver.Value, error) {
-	return pgtype.EncodeValueText(src)
+func (f Float8) Value() (driver.Value, error) {
+	if f == 0 {
+		return nil, nil
+	}
+	return float64(f), nil
 }