fix bugs

Author: pharms-eth

Sources/Core/EthereumABI/ABIElements.swift

@@ -202,7 +202,7 @@ extension ABI.Element.Function {
 
     /// Encode parameters of a given contract method
     /// - Parameter parameters: Parameters to pass to Ethereum contract
-    /// - Returns: Encoded data 
+    /// - Returns: Encoded data
     public func encodeParameters(_ parameters: [AnyObject]) -> Data? {
         guard parameters.count == inputs.count,
               let data = ABIEncoder.encode(types: inputs, values: parameters) else { return nil }
@@ -325,7 +325,7 @@ extension ABI.Element.Function {
             // set a flag to detect the request succeeded
         }
 
-        if returnArray.isEmpty {
+        if returnArray.isEmpty && !outputs.isEmpty {
             return nil
         }
 

Sources/web3swift/Operations/WriteOperation.swift

@@ -15,21 +15,26 @@ public class WriteOperation: ReadOperation {
     /// - Parameters:
     ///   - password: Password for private key.
     ///   - policies: Custom policies for how to resolve (optional). Default is auto.
-    public func writeToChain(password: String, policies: Policies = .auto) async throws -> TransactionSendingResult {
+    public func writeToChain(password: String, policies: Policies = .auto, sendRaw: Bool = false) async throws -> TransactionSendingResult {
         try await policyResolver.resolveAll(for: &transaction, with: policies)
-        if let attachedKeystoreManager = self.web3.provider.attachedKeystoreManager {
-            do {
-                try Web3Signer.signTX(transaction: &transaction,
-                                      keystore: attachedKeystoreManager,
-                                      account: transaction.from ?? transaction.sender ?? EthereumAddress.contractDeploymentAddress(),
-                                      password: password)
-            } catch {
-                throw Web3Error.inputError(desc: "Failed to locally sign a transaction")
-            }
-            guard let transactionData = transaction.encode(for: .transaction) else { throw Web3Error.dataError }
-            return try await web3.eth.send(raw: transactionData)
+
+        guard sendRaw else {
+            return try await web3.eth.send(transaction)
+        }
+
+        guard let attachedKeystoreManager = web3.provider.attachedKeystoreManager else {
+            throw Web3Error.inputError(desc: "Failed to locally sign a transaction. Web3 provider doesn't have keystore attached.")
+        }
+
+        do {
+            try Web3Signer.signTX(transaction: &transaction,
+                                  keystore: attachedKeystoreManager,
+                                  account: transaction.from ?? transaction.sender ?? EthereumAddress.contractDeploymentAddress(),
+                                  password: password)
+        } catch {
+            throw Web3Error.inputError(desc: "Failed to locally sign a transaction. \(error.localizedDescription)")
         }
-        // MARK: Sending Data flow
-        return try await web3.eth.send(transaction)
+        guard let transactionData = transaction.encode(for: .transaction) else { throw Web3Error.dataError }
+        return try await web3.eth.send(raw: transactionData)
     }
 }