|
| 1 | +package shwap |
| 2 | + |
| 3 | +import ( |
| 4 | + "encoding/binary" |
| 5 | + "fmt" |
| 6 | + "io" |
| 7 | +) |
| 8 | + |
| 9 | +// RangeNamespaceDataIDV0Size defines the size of the RangeNamespaceDataIDV0Size in bytes, |
| 10 | +// combining EdsIDSize size and 4 additional bytes |
| 11 | +// for the start and end ODS indexes of share of the range. |
| 12 | +const RangeNamespaceDataIDV0Size = EdsIDSize + 4 |
| 13 | + |
| 14 | +type RangeNamespaceDataIDV0 struct { |
| 15 | + RangeNamespaceDataID |
| 16 | +} |
| 17 | + |
| 18 | +func NewRangeNamespaceDataIDV0( |
| 19 | + edsID EdsID, |
| 20 | + from, to, odsSize int, |
| 21 | +) (RangeNamespaceDataIDV0, error) { |
| 22 | + rngData, err := NewRangeNamespaceDataID(edsID, from, to, odsSize) |
| 23 | + if err != nil { |
| 24 | + return RangeNamespaceDataIDV0{}, err |
| 25 | + } |
| 26 | + return RangeNamespaceDataIDV0{RangeNamespaceDataID: rngData}, nil |
| 27 | +} |
| 28 | + |
| 29 | +// RangeNamespaceDataIDV0FromBinary deserializes a RangeNamespaceDataIDV0 from its binary form. |
| 30 | +func RangeNamespaceDataIDV0FromBinary(data []byte) (RangeNamespaceDataIDV0, error) { |
| 31 | + if len(data) != RangeNamespaceDataIDV0Size { |
| 32 | + return RangeNamespaceDataIDV0{}, fmt.Errorf( |
| 33 | + "invalid RangeNamespaceDataID data length: expected %d, got %d", RangeNamespaceDataIDV0Size, len(data), |
| 34 | + ) |
| 35 | + } |
| 36 | + |
| 37 | + edsID, err := EdsIDFromBinary(data[:EdsIDSize]) |
| 38 | + if err != nil { |
| 39 | + return RangeNamespaceDataIDV0{}, err |
| 40 | + } |
| 41 | + |
| 42 | + rngID := RangeNamespaceDataID{ |
| 43 | + EdsID: edsID, |
| 44 | + From: int(binary.BigEndian.Uint16(data[EdsIDSize : EdsIDSize+2])), |
| 45 | + To: int(binary.BigEndian.Uint16(data[EdsIDSize+2 : EdsIDSize+4])), |
| 46 | + } |
| 47 | + return RangeNamespaceDataIDV0{RangeNamespaceDataID: rngID}, rngID.Validate() |
| 48 | +} |
| 49 | + |
| 50 | +// MarshalBinary encodes RangeNamespaceDataIDV0 into binary form. |
| 51 | +func (rngid RangeNamespaceDataIDV0) MarshalBinary() ([]byte, error) { |
| 52 | + data := make([]byte, 0, RangeNamespaceDataIDV0Size) |
| 53 | + return rngid.appendTo(data) |
| 54 | +} |
| 55 | + |
| 56 | +// ReadFrom reads the binary form of RangeNamespaceDataIDV0 from the provided reader. |
| 57 | +func (rngid *RangeNamespaceDataIDV0) ReadFrom(r io.Reader) (int64, error) { |
| 58 | + data := make([]byte, RangeNamespaceDataIDV0Size) |
| 59 | + n, err := io.ReadFull(r, data) |
| 60 | + if err != nil { |
| 61 | + return int64(n), err |
| 62 | + } |
| 63 | + |
| 64 | + id, err := RangeNamespaceDataIDV0FromBinary(data) |
| 65 | + if err != nil { |
| 66 | + return int64(n), fmt.Errorf("RangeNamespaceDataIDV0FromBinary: %w", err) |
| 67 | + } |
| 68 | + *rngid = id |
| 69 | + return int64(n), nil |
| 70 | +} |
| 71 | + |
| 72 | +// WriteTo writes the binary form of RangeNamespaceDataIDV0 to the provided writer. |
| 73 | +func (rngid RangeNamespaceDataIDV0) WriteTo(w io.Writer) (int64, error) { |
| 74 | + data, err := rngid.MarshalBinary() |
| 75 | + if err != nil { |
| 76 | + return 0, err |
| 77 | + } |
| 78 | + n, err := w.Write(data) |
| 79 | + return int64(n), err |
| 80 | +} |
| 81 | + |
| 82 | +// appendTo helps in constructing the binary representation of RangeNamespaceDataIDV0 |
| 83 | +// by appending all encoded fields. |
| 84 | +func (rngid RangeNamespaceDataIDV0) appendTo(data []byte) ([]byte, error) { |
| 85 | + data, err := rngid.AppendBinary(data) |
| 86 | + if err != nil { |
| 87 | + return nil, fmt.Errorf("appending EdsID: %w", err) |
| 88 | + } |
| 89 | + data = binary.BigEndian.AppendUint16(data, uint16(rngid.From)) |
| 90 | + data = binary.BigEndian.AppendUint16(data, uint16(rngid.To)) |
| 91 | + return data, nil |
| 92 | +} |
| 93 | + |
| 94 | +// Equals checks equality of RangeNamespaceDataIDV0. |
| 95 | +func (rngid *RangeNamespaceDataIDV0) Equals(other RangeNamespaceDataIDV0) bool { |
| 96 | + return rngid.RangeNamespaceDataID.Equals(other.RangeNamespaceDataID) |
| 97 | +} |
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