switch to go vendoring

vendor/github.com/shamaton/msgpack/v2/internal/decoding/complex.go

@@ -0,0 +1,114 @@
+package decoding
+
+import (
+	"encoding/binary"
+	"fmt"
+	"math"
+	"reflect"
+
+	"github.com/shamaton/msgpack/v2/def"
+)
+
+func (d *decoder) asComplex64(offset int, k reflect.Kind) (complex64, int, error) {
+	code, offset, err := d.readSize1(offset)
+	if err != nil {
+		return complex(0, 0), 0, err
+	}
+
+	switch code {
+	case def.Fixext8:
+		t, offset, err := d.readSize1(offset)
+		if err != nil {
+			return complex(0, 0), 0, err
+		}
+		if int8(t) != def.ComplexTypeCode() {
+			return complex(0, 0), 0, fmt.Errorf("fixext8. complex type is diffrent %d, %d", t, def.ComplexTypeCode())
+		}
+		rb, offset, err := d.readSize4(offset)
+		if err != nil {
+			return complex(0, 0), 0, err
+		}
+		ib, offset, err := d.readSize4(offset)
+		if err != nil {
+			return complex(0, 0), 0, err
+		}
+		r := math.Float32frombits(binary.BigEndian.Uint32(rb))
+		i := math.Float32frombits(binary.BigEndian.Uint32(ib))
+		return complex(r, i), offset, nil
+
+	case def.Fixext16:
+		t, offset, err := d.readSize1(offset)
+		if err != nil {
+			return complex(0, 0), 0, err
+		}
+		if int8(t) != def.ComplexTypeCode() {
+			return complex(0, 0), 0, fmt.Errorf("fixext16. complex type is diffrent %d, %d", t, def.ComplexTypeCode())
+		}
+		rb, offset, err := d.readSize8(offset)
+		if err != nil {
+			return complex(0, 0), 0, err
+		}
+		ib, offset, err := d.readSize8(offset)
+		if err != nil {
+			return complex(0, 0), 0, err
+		}
+		r := math.Float64frombits(binary.BigEndian.Uint64(rb))
+		i := math.Float64frombits(binary.BigEndian.Uint64(ib))
+		return complex64(complex(r, i)), offset, nil
+
+	}
+
+	return complex(0, 0), 0, fmt.Errorf("should not reach this line!! code %x decoding %v", code, k)
+}
+
+func (d *decoder) asComplex128(offset int, k reflect.Kind) (complex128, int, error) {
+	code, offset, err := d.readSize1(offset)
+	if err != nil {
+		return complex(0, 0), 0, err
+	}
+
+	switch code {
+	case def.Fixext8:
+		t, offset, err := d.readSize1(offset)
+		if err != nil {
+			return complex(0, 0), 0, err
+		}
+		if int8(t) != def.ComplexTypeCode() {
+			return complex(0, 0), 0, fmt.Errorf("fixext8. complex type is diffrent %d, %d", t, def.ComplexTypeCode())
+		}
+		rb, offset, err := d.readSize4(offset)
+		if err != nil {
+			return complex(0, 0), 0, err
+		}
+		ib, offset, err := d.readSize4(offset)
+		if err != nil {
+			return complex(0, 0), 0, err
+		}
+		r := math.Float32frombits(binary.BigEndian.Uint32(rb))
+		i := math.Float32frombits(binary.BigEndian.Uint32(ib))
+		return complex128(complex(r, i)), offset, nil
+
+	case def.Fixext16:
+		t, offset, err := d.readSize1(offset)
+		if err != nil {
+			return complex(0, 0), 0, err
+		}
+		if int8(t) != def.ComplexTypeCode() {
+			return complex(0, 0), 0, fmt.Errorf("fixext16. complex type is diffrent %d, %d", t, def.ComplexTypeCode())
+		}
+		rb, offset, err := d.readSize8(offset)
+		if err != nil {
+			return complex(0, 0), 0, err
+		}
+		ib, offset, err := d.readSize8(offset)
+		if err != nil {
+			return complex(0, 0), 0, err
+		}
+		r := math.Float64frombits(binary.BigEndian.Uint64(rb))
+		i := math.Float64frombits(binary.BigEndian.Uint64(ib))
+		return complex(r, i), offset, nil
+
+	}
+
+	return complex(0, 0), 0, fmt.Errorf("should not reach this line!! code %x decoding %v", code, k)
+}