chore(ffi): Add signing_digest_hex() function (#300)

* chore(ffi): Add `signing_digest_hex()` and `bcs_serialize_base64()` functions

* add some more fns to types

* fix typo

* update rust examples

* make to_bcs and to_base64 infallable

* fix rust examples

* adapt latest example

* infallible base64

---------

Co-authored-by: Thibault Martinez <[email protected]>

Author: DaughterOfMars

bindings/go/examples/gas_sponsor/main.go

@@ -38,12 +38,8 @@ func main() {
 		log.Fatalf("Failed to create transaction: %v", err)
 	}
 
-	txnBytes, err := txn.ToBcs()
-	if err != nil {
-		log.Fatalf("Failed to serialize transaction: %v", err)
-	}
-	log.Printf("Signing Digest: %v", sdk.HexEncode(txn.SigningDigest()))
-	log.Printf("Txn Bytes: %v", sdk.Base64Encode(txnBytes))
+	log.Printf("Signing Digest: %v", txn.SigningDigestHex())
+	log.Printf("Txn Bytes: %v", txn.ToBase64())
 
 	res, err := client.DryRunTx(txn, false)
 	if err.(*sdk.SdkFfiError) != nil {

bindings/go/examples/prepare_merge_coins/main.go

@@ -25,12 +25,8 @@ func main() {
 		log.Fatalf("Failed to create transaction: %v", err)
 	}
 
-	txnBytes, err := txn.ToBcs()
-	if err != nil {
-		log.Fatalf("Failed to serialize transaction: %v", err)
-	}
-	log.Printf("Signing Digest: %v", sdk.HexEncode(txn.SigningDigest()))
-	log.Printf("Txn Bytes: %v", sdk.Base64Encode(txnBytes))
+	log.Printf("Signing Digest: %v", txn.SigningDigestHex())
+	log.Printf("Txn Bytes: %v", txn.ToBase64())
 
 	res, err := builder.DryRun(false)
 	if err.(*sdk.SdkFfiError) != nil {

bindings/go/examples/prepare_send_coins/main.go

@@ -28,12 +28,8 @@ func main() {
 		log.Fatalf("Failed to create transaction: %v", err)
 	}
 
-	txnBytes, err := txn.ToBcs()
-	if err != nil {
-		log.Fatalf("Failed to serialize transaction: %v", err)
-	}
-	log.Printf("Signing Digest: %v", sdk.HexEncode(txn.SigningDigest()))
-	log.Printf("Txn Bytes: %v", sdk.Base64Encode(txnBytes))
+	log.Printf("Signing Digest: %v", txn.SigningDigestHex())
+	log.Printf("Txn Bytes: %v", txn.ToBase64())
 
 	res, err := builder.DryRun(false)
 	if err.(*sdk.SdkFfiError) != nil {

bindings/go/examples/prepare_send_iota/main.go

@@ -25,12 +25,8 @@ func main() {
 		log.Fatalf("Failed to create transaction: %v", err)
 	}
 
-	txnBytes, err := txn.ToBcs()
-	if err != nil {
-		log.Fatalf("Failed to serialize transaction: %v", err)
-	}
-	log.Printf("Signing Digest: %v", sdk.HexEncode(txn.SigningDigest()))
-	log.Printf("Txn Bytes: %v", sdk.Base64Encode(txnBytes))
+	log.Printf("Signing Digest: %v", txn.SigningDigestHex())
+	log.Printf("Txn Bytes: %v", txn.ToBase64())
 
 	res, err := client.DryRunTx(txn, false)
 	if err.(*sdk.SdkFfiError) != nil {

bindings/go/examples/prepare_send_iota_multi/main.go

@@ -48,12 +48,8 @@ func main() {
 		log.Fatalf("Failed to create transaction: %v", err)
 	}
 
-	txnBytes, err := txn.ToBcs()
-	if err != nil {
-		log.Fatalf("Failed to serialize transaction: %v", err)
-	}
-	log.Printf("Signing Digest: %v", sdk.HexEncode(txn.SigningDigest()))
-	log.Printf("Txn Bytes: %v", sdk.Base64Encode(txnBytes))
+	log.Printf("Signing Digest: %v", txn.SigningDigestHex())
+	log.Printf("Txn Bytes: %v", txn.ToBase64())
 
 	res, err := client.DryRunTx(txn, false)
 	if err.(*sdk.SdkFfiError) != nil {

bindings/go/examples/prepare_split_coins/main.go

@@ -37,12 +37,8 @@ func main() {
 		log.Fatalf("Failed to create transaction: %v", err)
 	}
 
-	txnBytes, err := txn.ToBcs()
-	if err != nil {
-		log.Fatalf("Failed to serialize transaction: %v", err)
-	}
-	log.Printf("Signing Digest: %v", sdk.HexEncode(txn.SigningDigest()))
-	log.Printf("Txn Bytes: %v", sdk.Base64Encode(txnBytes))
+	log.Printf("Signing Digest: %v", txn.SigningDigestHex())
+	log.Printf("Txn Bytes: %v", txn.ToBase64())
 
 	res, err := builder.DryRun(false)
 	if err.(*sdk.SdkFfiError) != nil {

bindings/go/examples/prepare_transfer_objects/main.go

@@ -38,12 +38,8 @@ func main() {
 		log.Fatalf("Failed to create transaction: %v", err)
 	}
 
-	txnBytes, err := txn.ToBcs()
-	if err != nil {
-		log.Fatalf("Failed to serialize transaction: %v", err)
-	}
-	log.Printf("Signing Digest: %v", sdk.HexEncode(txn.SigningDigest()))
-	log.Printf("Txn Bytes: %v", sdk.Base64Encode(txnBytes))
+	log.Printf("Signing Digest: %v", txn.SigningDigestHex())
+	log.Printf("Txn Bytes: %v", txn.ToBase64())
 
 	res, err := client.DryRunTx(txn, false)
 	if err.(*sdk.SdkFfiError) != nil {

bindings/go/examples/tx_command_results/main.go

@@ -55,12 +55,8 @@ func main() {
 		log.Fatalf("Failed to create transaction: %v", err)
 	}
 
-	txnBase64, err := txn.ToBase64()
-	if err != nil {
-		log.Fatalf("Failed to serialize transaction: %v", err)
-	}
-	log.Printf("Signing Digest: %v", sdk.HexEncode(txn.SigningDigest()))
-	log.Printf("Txn Bytes: %v", txnBase64)
+	log.Printf("Signing Digest: %v", txn.SigningDigestHex())
+	log.Printf("Txn Bytes: %v", txn.ToBase64())
 
 	res, err := client.DryRunTx(txn, false)
 	if err.(*sdk.SdkFfiError) != nil {