Import to pgx main repo in pgtype subdir

2021-12-04 13:07:54 -06:00
parent 550cc7b529
commit 44214b7854
237 changed files with 0 additions and 0 deletions
@@ -0,0 +1,257 @@
+package pgtype
+
+import (
+	"database/sql/driver"
+	"fmt"
+
+	"github.com/jackc/pgio"
+)
+
+type Numrange struct {
+	Lower     Numeric
+	Upper     Numeric
+	LowerType BoundType
+	UpperType BoundType
+	Valid     bool
+}
+
+func (dst *Numrange) Set(src interface{}) error {
+	// untyped nil and typed nil interfaces are different
+	if src == nil {
+		*dst = Numrange{}
+		return nil
+	}
+
+	switch value := src.(type) {
+	case Numrange:
+		*dst = value
+	case *Numrange:
+		*dst = *value
+	case string:
+		return dst.DecodeText(nil, []byte(value))
+	default:
+		return fmt.Errorf("cannot convert %v to Numrange", src)
+	}
+
+	return nil
+}
+
+func (src Numrange) Get() interface{} {
+	if !src.Valid {
+		return nil
+	}
+	return src
+}
+
+func (src *Numrange) AssignTo(dst interface{}) error {
+	return fmt.Errorf("cannot assign %v to %T", src, dst)
+}
+
+func (dst *Numrange) DecodeText(ci *ConnInfo, src []byte) error {
+	if src == nil {
+		*dst = Numrange{}
+		return nil
+	}
+
+	utr, err := ParseUntypedTextRange(string(src))
+	if err != nil {
+		return err
+	}
+
+	*dst = Numrange{Valid: true}
+
+	dst.LowerType = utr.LowerType
+	dst.UpperType = utr.UpperType
+
+	if dst.LowerType == Empty {
+		return nil
+	}
+
+	if dst.LowerType == Inclusive || dst.LowerType == Exclusive {
+		if err := dst.Lower.DecodeText(ci, []byte(utr.Lower)); err != nil {
+			return err
+		}
+	}
+
+	if dst.UpperType == Inclusive || dst.UpperType == Exclusive {
+		if err := dst.Upper.DecodeText(ci, []byte(utr.Upper)); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (dst *Numrange) DecodeBinary(ci *ConnInfo, src []byte) error {
+	if src == nil {
+		*dst = Numrange{}
+		return nil
+	}
+
+	ubr, err := ParseUntypedBinaryRange(src)
+	if err != nil {
+		return err
+	}
+
+	*dst = Numrange{Valid: true}
+
+	dst.LowerType = ubr.LowerType
+	dst.UpperType = ubr.UpperType
+
+	if dst.LowerType == Empty {
+		return nil
+	}
+
+	if dst.LowerType == Inclusive || dst.LowerType == Exclusive {
+		if err := dst.Lower.DecodeBinary(ci, ubr.Lower); err != nil {
+			return err
+		}
+	}
+
+	if dst.UpperType == Inclusive || dst.UpperType == Exclusive {
+		if err := dst.Upper.DecodeBinary(ci, ubr.Upper); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (src Numrange) EncodeText(ci *ConnInfo, buf []byte) ([]byte, error) {
+	if !src.Valid {
+		return nil, nil
+	}
+
+	switch src.LowerType {
+	case Exclusive, Unbounded:
+		buf = append(buf, '(')
+	case Inclusive:
+		buf = append(buf, '[')
+	case Empty:
+		return append(buf, "empty"...), nil
+	default:
+		return nil, fmt.Errorf("unknown lower bound type %v", src.LowerType)
+	}
+
+	var err error
+
+	if src.LowerType != Unbounded {
+		buf, err = src.Lower.EncodeText(ci, buf)
+		if err != nil {
+			return nil, err
+		} else if buf == nil {
+			return nil, fmt.Errorf("Lower cannot be null unless LowerType is Unbounded")
+		}
+	}
+
+	buf = append(buf, ',')
+
+	if src.UpperType != Unbounded {
+		buf, err = src.Upper.EncodeText(ci, buf)
+		if err != nil {
+			return nil, err
+		} else if buf == nil {
+			return nil, fmt.Errorf("Upper cannot be null unless UpperType is Unbounded")
+		}
+	}
+
+	switch src.UpperType {
+	case Exclusive, Unbounded:
+		buf = append(buf, ')')
+	case Inclusive:
+		buf = append(buf, ']')
+	default:
+		return nil, fmt.Errorf("unknown upper bound type %v", src.UpperType)
+	}
+
+	return buf, nil
+}
+
+func (src Numrange) EncodeBinary(ci *ConnInfo, buf []byte) ([]byte, error) {
+	if !src.Valid {
+		return nil, nil
+	}
+
+	var rangeType byte
+	switch src.LowerType {
+	case Inclusive:
+		rangeType |= lowerInclusiveMask
+	case Unbounded:
+		rangeType |= lowerUnboundedMask
+	case Exclusive:
+	case Empty:
+		return append(buf, emptyMask), nil
+	default:
+		return nil, fmt.Errorf("unknown LowerType: %v", src.LowerType)
+	}
+
+	switch src.UpperType {
+	case Inclusive:
+		rangeType |= upperInclusiveMask
+	case Unbounded:
+		rangeType |= upperUnboundedMask
+	case Exclusive:
+	default:
+		return nil, fmt.Errorf("unknown UpperType: %v", src.UpperType)
+	}
+
+	buf = append(buf, rangeType)
+
+	var err error
+
+	if src.LowerType != Unbounded {
+		sp := len(buf)
+		buf = pgio.AppendInt32(buf, -1)
+
+		buf, err = src.Lower.EncodeBinary(ci, buf)
+		if err != nil {
+			return nil, err
+		}
+		if buf == nil {
+			return nil, fmt.Errorf("Lower cannot be null unless LowerType is Unbounded")
+		}
+
+		pgio.SetInt32(buf[sp:], int32(len(buf[sp:])-4))
+	}
+
+	if src.UpperType != Unbounded {
+		sp := len(buf)
+		buf = pgio.AppendInt32(buf, -1)
+
+		buf, err = src.Upper.EncodeBinary(ci, buf)
+		if err != nil {
+			return nil, err
+		}
+		if buf == nil {
+			return nil, fmt.Errorf("Upper cannot be null unless UpperType is Unbounded")
+		}
+
+		pgio.SetInt32(buf[sp:], int32(len(buf[sp:])-4))
+	}
+
+	return buf, nil
+}
+
+// Scan implements the database/sql Scanner interface.
+func (dst *Numrange) Scan(src interface{}) error {
+	if src == nil {
+		*dst = Numrange{}
+		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 Numrange) Value() (driver.Value, error) {
+	return EncodeValueText(src)
+}