Add general extrinsic support

extrinsic.go

@@ -227,8 +227,16 @@ func (e *ExtrinsicDecoder) Process() {
 		}
 		e.CallIndex = utiles.BytesToHex(e.NextBytes(2))
 	} else if e.VersionInfo == "45" {
-		e.NextBytes(4)
 		e.ExtrinsicHash = e.generateHash()
+		result.TransactionExtensionVersion = e.ProcessAndUpdateData("U8").(int)
+		result.SignedExtensions = make(map[string]interface{})
+		for _, ext := range e.Metadata.Extrinsic.SignedExtensions {
+			extValue := e.ProcessAndUpdateData(ext.TypeString)
+			if v, ok := extValue.(map[string]interface{}); ok && len(v) == 0 {
+				continue
+			}
+			result.SignedExtensions[ext.Identifier] = extValue
+		}
 		e.CallIndex = utiles.BytesToHex(e.NextBytes(2))
 	} else {
 		panic(fmt.Sprintf("Extrinsics version %s is not support", e.VersionInfo))

extrinsic_test.go

@@ -2,6 +2,7 @@ package scalecodec_test
 
 import (
 	"fmt"
+	"github.com/itering/scale.go/static"
 	"os"
 	"testing"
 
@@ -80,3 +81,20 @@ func TestExtrinsicEncode(t *testing.T) {
 	_, err := genericExtrinsic.Encode(&option)
 	assert.Error(t, err)
 }
+
+func Test_ExtrinsicV5(t *testing.T) {
+	m := scalecodec.MetadataDecoder{}
+	m.Init(utiles.HexToBytes(static.HexMetadata))
+	_ = m.Process()
+
+	t.Run("general extrinsic", func(t *testing.T) {
+		raw := "0xc44500650000000000060000d43593c715fdd31c61141abd04a99fd6822c8558854ccde39a5684e7a56da27d0700e40b5402"
+		e := scalecodec.ExtrinsicDecoder{}
+		e.Init(scaleBytes.ScaleBytes{Data: utiles.HexToBytes(raw)}, &types.ScaleDecoderOption{Metadata: &m.Metadata})
+		e.Process()
+		extrinsic := (e.Value.(*scalecodec.GenericExtrinsic))
+		assert.Equal(t, "transfer_allow_death", extrinsic.CallModuleFunction)
+		assert.Equal(t, "00d43593c715fdd31c61141abd04a99fd6822c8558854ccde39a5684e7a56da27d0700e40b5402", extrinsic.ParamsRaw)
+		assert.Equal(t, "45", extrinsic.VersionInfo)
+	})
+}