package msgpack import ( "math" "reflect" "github.com/vmihailenco/msgpack/v4/codes" ) // EncodeUint8 encodes an uint8 in 2 bytes preserving type of the number. func (e *Encoder) EncodeUint8(n uint8) error { return e.write1(codes.Uint8, n) } func (e *Encoder) encodeUint8Cond(n uint8) error { if e.flags&useCompactIntsFlag != 0 { return e.EncodeUint(uint64(n)) } return e.EncodeUint8(n) } // EncodeUint16 encodes an uint16 in 3 bytes preserving type of the number. func (e *Encoder) EncodeUint16(n uint16) error { return e.write2(codes.Uint16, n) } func (e *Encoder) encodeUint16Cond(n uint16) error { if e.flags&useCompactIntsFlag != 0 { return e.EncodeUint(uint64(n)) } return e.EncodeUint16(n) } // EncodeUint32 encodes an uint16 in 5 bytes preserving type of the number. func (e *Encoder) EncodeUint32(n uint32) error { return e.write4(codes.Uint32, n) } func (e *Encoder) encodeUint32Cond(n uint32) error { if e.flags&useCompactIntsFlag != 0 { return e.EncodeUint(uint64(n)) } return e.EncodeUint32(n) } // EncodeUint64 encodes an uint16 in 9 bytes preserving type of the number. func (e *Encoder) EncodeUint64(n uint64) error { return e.write8(codes.Uint64, n) } func (e *Encoder) encodeUint64Cond(n uint64) error { if e.flags&useCompactIntsFlag != 0 { return e.EncodeUint(n) } return e.EncodeUint64(n) } // EncodeInt8 encodes an int8 in 2 bytes preserving type of the number. func (e *Encoder) EncodeInt8(n int8) error { return e.write1(codes.Int8, uint8(n)) } func (e *Encoder) encodeInt8Cond(n int8) error { if e.flags&useCompactIntsFlag != 0 { return e.EncodeInt(int64(n)) } return e.EncodeInt8(n) } // EncodeInt16 encodes an int16 in 3 bytes preserving type of the number. func (e *Encoder) EncodeInt16(n int16) error { return e.write2(codes.Int16, uint16(n)) } func (e *Encoder) encodeInt16Cond(n int16) error { if e.flags&useCompactIntsFlag != 0 { return e.EncodeInt(int64(n)) } return e.EncodeInt16(n) } // EncodeInt32 encodes an int32 in 5 bytes preserving type of the number. func (e *Encoder) EncodeInt32(n int32) error { return e.write4(codes.Int32, uint32(n)) } func (e *Encoder) encodeInt32Cond(n int32) error { if e.flags&useCompactIntsFlag != 0 { return e.EncodeInt(int64(n)) } return e.EncodeInt32(n) } // EncodeInt64 encodes an int64 in 9 bytes preserving type of the number. func (e *Encoder) EncodeInt64(n int64) error { return e.write8(codes.Int64, uint64(n)) } func (e *Encoder) encodeInt64Cond(n int64) error { if e.flags&useCompactIntsFlag != 0 { return e.EncodeInt(n) } return e.EncodeInt64(n) } // EncodeUnsignedNumber encodes an uint64 in 1, 2, 3, 5, or 9 bytes. // Type of the number is lost during encoding. func (e *Encoder) EncodeUint(n uint64) error { if n <= math.MaxInt8 { return e.w.WriteByte(byte(n)) } if n <= math.MaxUint8 { return e.EncodeUint8(uint8(n)) } if n <= math.MaxUint16 { return e.EncodeUint16(uint16(n)) } if n <= math.MaxUint32 { return e.EncodeUint32(uint32(n)) } return e.EncodeUint64(n) } // EncodeNumber encodes an int64 in 1, 2, 3, 5, or 9 bytes. // Type of the number is lost during encoding. func (e *Encoder) EncodeInt(n int64) error { if n >= 0 { return e.EncodeUint(uint64(n)) } if n >= int64(int8(codes.NegFixedNumLow)) { return e.w.WriteByte(byte(n)) } if n >= math.MinInt8 { return e.EncodeInt8(int8(n)) } if n >= math.MinInt16 { return e.EncodeInt16(int16(n)) } if n >= math.MinInt32 { return e.EncodeInt32(int32(n)) } return e.EncodeInt64(n) } func (e *Encoder) EncodeFloat32(n float32) error { if e.flags&useCompactFloatsFlag != 0 { if float32(int64(n)) == n { return e.EncodeInt(int64(n)) } } return e.write4(codes.Float, math.Float32bits(n)) } func (e *Encoder) EncodeFloat64(n float64) error { if e.flags&useCompactFloatsFlag != 0 { // Both NaN and Inf convert to int64(-0x8000000000000000) // If n is NaN then it never compares true with any other value // If n is Inf then it doesn't convert from int64 back to +/-Inf // In both cases the comparison works. if float64(int64(n)) == n { return e.EncodeInt(int64(n)) } } return e.write8(codes.Double, math.Float64bits(n)) } func (e *Encoder) write1(code codes.Code, n uint8) error { e.buf = e.buf[:2] e.buf[0] = byte(code) e.buf[1] = n return e.write(e.buf) } func (e *Encoder) write2(code codes.Code, n uint16) error { e.buf = e.buf[:3] e.buf[0] = byte(code) e.buf[1] = byte(n >> 8) e.buf[2] = byte(n) return e.write(e.buf) } func (e *Encoder) write4(code codes.Code, n uint32) error { e.buf = e.buf[:5] e.buf[0] = byte(code) e.buf[1] = byte(n >> 24) e.buf[2] = byte(n >> 16) e.buf[3] = byte(n >> 8) e.buf[4] = byte(n) return e.write(e.buf) } func (e *Encoder) write8(code codes.Code, n uint64) error { e.buf = e.buf[:9] e.buf[0] = byte(code) e.buf[1] = byte(n >> 56) e.buf[2] = byte(n >> 48) e.buf[3] = byte(n >> 40) e.buf[4] = byte(n >> 32) e.buf[5] = byte(n >> 24) e.buf[6] = byte(n >> 16) e.buf[7] = byte(n >> 8) e.buf[8] = byte(n) return e.write(e.buf) } func encodeUint8CondValue(e *Encoder, v reflect.Value) error { return e.encodeUint8Cond(uint8(v.Uint())) } func encodeUint16CondValue(e *Encoder, v reflect.Value) error { return e.encodeUint16Cond(uint16(v.Uint())) } func encodeUint32CondValue(e *Encoder, v reflect.Value) error { return e.encodeUint32Cond(uint32(v.Uint())) } func encodeUint64CondValue(e *Encoder, v reflect.Value) error { return e.encodeUint64Cond(v.Uint()) } func encodeInt8CondValue(e *Encoder, v reflect.Value) error { return e.encodeInt8Cond(int8(v.Int())) } func encodeInt16CondValue(e *Encoder, v reflect.Value) error { return e.encodeInt16Cond(int16(v.Int())) } func encodeInt32CondValue(e *Encoder, v reflect.Value) error { return e.encodeInt32Cond(int32(v.Int())) } func encodeInt64CondValue(e *Encoder, v reflect.Value) error { return e.encodeInt64Cond(v.Int()) } func encodeFloat32Value(e *Encoder, v reflect.Value) error { return e.EncodeFloat32(float32(v.Float())) } func encodeFloat64Value(e *Encoder, v reflect.Value) error { return e.EncodeFloat64(v.Float()) }