93 lines
2.1 KiB
Go
93 lines
2.1 KiB
Go
package decoding
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import (
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"encoding/binary"
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"math"
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"reflect"
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"github.com/shamaton/msgpack/v2/def"
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)
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func (d *decoder) asFloat32(offset int, k reflect.Kind) (float32, int, error) {
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code, _, err := d.readSize1(offset)
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if err != nil {
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return 0, 0, err
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}
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switch {
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case code == def.Float32:
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offset++
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bs, offset, err := d.readSize4(offset)
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if err != nil {
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return 0, 0, err
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}
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v := math.Float32frombits(binary.BigEndian.Uint32(bs))
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return v, offset, nil
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case d.isPositiveFixNum(code), code == def.Uint8, code == def.Uint16, code == def.Uint32, code == def.Uint64:
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v, offset, err := d.asUint(offset, k)
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if err != nil {
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break
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}
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return float32(v), offset, nil
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case d.isNegativeFixNum(code), code == def.Int8, code == def.Int16, code == def.Int32, code == def.Int64:
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v, offset, err := d.asInt(offset, k)
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if err != nil {
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break
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}
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return float32(v), offset, nil
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case code == def.Nil:
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offset++
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return 0, offset, nil
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}
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return 0, 0, d.errorTemplate(code, k)
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}
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func (d *decoder) asFloat64(offset int, k reflect.Kind) (float64, int, error) {
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code, _, err := d.readSize1(offset)
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if err != nil {
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return 0, 0, err
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}
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switch {
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case code == def.Float64:
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offset++
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bs, offset, err := d.readSize8(offset)
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if err != nil {
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return 0, 0, err
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}
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v := math.Float64frombits(binary.BigEndian.Uint64(bs))
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return v, offset, nil
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case code == def.Float32:
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offset++
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bs, offset, err := d.readSize4(offset)
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if err != nil {
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return 0, 0, err
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}
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v := math.Float32frombits(binary.BigEndian.Uint32(bs))
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return float64(v), offset, nil
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case d.isPositiveFixNum(code), code == def.Uint8, code == def.Uint16, code == def.Uint32, code == def.Uint64:
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v, offset, err := d.asUint(offset, k)
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if err != nil {
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break
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}
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return float64(v), offset, nil
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case d.isNegativeFixNum(code), code == def.Int8, code == def.Int16, code == def.Int32, code == def.Int64:
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v, offset, err := d.asInt(offset, k)
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if err != nil {
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break
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}
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return float64(v), offset, nil
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case code == def.Nil:
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offset++
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return 0, offset, nil
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}
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return 0, 0, d.errorTemplate(code, k)
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}
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