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metadata.go
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metadata.go
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package scalecodec
import (
"errors"
"github.com/itering/scale.go/types"
"github.com/itering/scale.go/utiles"
)
type MetadataDecoder struct {
types.ScaleDecoder
Version string `json:"version"`
VersionNumber int `json:"version_number"`
Metadata types.MetadataStruct `json:"metadata"`
CodecTypes []string `json:"codec_types"`
}
func (m *MetadataDecoder) Init(data []byte) {
sData := types.ScaleBytes{Data: data}
m.ScaleDecoder.Init(sData, nil)
}
func (m *MetadataDecoder) Process() error {
magicBytes := m.NextBytes(4)
if string(magicBytes) == "meta" {
metadataVersion := utiles.U256(utiles.BytesToHex(m.Data.Data[m.Data.Offset : m.Data.Offset+1]))
m.Version = m.ProcessAndUpdateData("MetadataVersion").(string)
m.Metadata = m.ProcessAndUpdateData(m.Version).(types.MetadataStruct)
m.Metadata.MetadataVersion = int(metadataVersion.Int64())
return nil
}
return errors.New("not metadata")
}
// CheckRegistry deprecated, metadata v14 will auto register all types
func (m *MetadataDecoder) CheckRegistry() (notReg []string) { return }