// Extract is a helper function to extract information from an xdr.Asset
// structure. It extracts the asset's type to the `typ` input parameter (which
// must be either a *string or *xdr.AssetType). It also extracts the asset's
// code and issuer to `code` and `issuer` respectively if they are of type
// *string and the asset is non-native
func (a Asset) Extract(typ interface{}, code interface{}, issuer interface{}) error {
switch typ := typ.(type) {
case *AssetType:
*typ = a.Type
case *string:
switch a.Type {
case AssetTypeAssetTypeNative:
*typ = "native"
case AssetTypeAssetTypeCreditAlphanum4:
*typ = "credit_alphanum4"
case AssetTypeAssetTypeCreditAlphanum12:
*typ = "credit_alphanum12"
}
default:
return errors.New("can't extract type")
}
if code != nil {
switch code := code.(type) {
case *string:
switch a.Type {
case AssetTypeAssetTypeCreditAlphanum4:
an := a.MustAlphaNum4()
*code = strings.TrimRight(string(an.AssetCode[:]), "\x00")
case AssetTypeAssetTypeCreditAlphanum12:
an := a.MustAlphaNum12()
*code = strings.TrimRight(string(an.AssetCode[:]), "\x00")
}
default:
return errors.New("can't extract code")
}
}
if issuer != nil {
switch issuer := issuer.(type) {
case *string:
switch a.Type {
case AssetTypeAssetTypeCreditAlphanum4:
an := a.MustAlphaNum4()
raw := an.Issuer.MustEd25519()
*issuer = strkey.MustEncode(strkey.VersionByteAccountID, raw[:])
case AssetTypeAssetTypeCreditAlphanum12:
an := a.MustAlphaNum12()
raw := an.Issuer.MustEd25519()
*issuer = strkey.MustEncode(strkey.VersionByteAccountID, raw[:])
}
default:
return errors.New("can't extract issuer")
}
}
return nil
}
func (kp *Full) Address() string {
return strkey.MustEncode(strkey.VersionByteAccountID, kp.publicKey()[:])
}