rpc: use non-pointer Block and Transaction in results

Pointers can be nil and in some cases it's important to always have access to
Block or Transaction fields.

pkg/rpc/client/rpc_test.go

@@ -64,7 +64,7 @@ func getResultBlock1() *result.Block {
 		panic(err)
 	}
 	return &result.Block{
-		Block: b,
+		Block: *b,
 		BlockMetadata: result.BlockMetadata{
 			Size:          1681,
 			NextBlockHash: &b2Hash,
@@ -85,7 +85,7 @@ func getTxMoveNeo() *result.TransactionOutputRaw {
 		panic(err)
 	}
 	return &result.TransactionOutputRaw{
-		Transaction: tx,
+		Transaction: *tx,
 		TransactionMetadata: result.TransactionMetadata{
 			Timestamp:     b1.Timestamp,
 			Blockhash:     b1.Block.Hash(),
@@ -155,7 +155,7 @@ var rpcClientTestCases = map[string][]rpcClientTestCase{
 			serverResponse: `{"id":1,"jsonrpc":"2.0","result":"` + hexB1 + `"}`,
 			result: func(c *Client) interface{} {
 				b := getResultBlock1()
-				return b.Block
+				return &b.Block
 			},
 		},
 		{
@@ -180,7 +180,7 @@ var rpcClientTestCases = map[string][]rpcClientTestCase{
 			serverResponse: `{"id":1,"jsonrpc":"2.0","result":"` + hexB1 + `"}`,
 			result: func(c *Client) interface{} {
 				b := getResultBlock1()
-				return b.Block
+				return &b.Block
 			},
 		},
 		{
@@ -449,7 +449,7 @@ var rpcClientTestCases = map[string][]rpcClientTestCase{
 			serverResponse: `{"id":1,"jsonrpc":"2.0","result":"` + hexTxMoveNeo + `"}`,
 			result: func(c *Client) interface{} {
 				tx := getTxMoveNeo()
-				return tx.Transaction
+				return &tx.Transaction
 			},
 		},
 		{

pkg/rpc/response/result/block.go

@@ -14,7 +14,7 @@ type (
 	// Block wrapper used for the representation of
 	// block.Block / block.Base on the RPC Server.
 	Block struct {
-		*block.Block
+		block.Block
 		BlockMetadata
 	}
 
@@ -30,7 +30,7 @@ type (
 // NewBlock creates a new Block wrapper.
 func NewBlock(b *block.Block, chain blockchainer.Blockchainer) Block {
 	res := Block{
-		Block: b,
+		Block: *b,
 		BlockMetadata: BlockMetadata{
 			Size:          io.GetVarSize(b),
 			Confirmations: chain.BlockHeight() - b.Index + 1,
@@ -72,16 +72,14 @@ func (b *Block) UnmarshalJSON(data []byte) error {
 	// As block.Block and BlockMetadata are at the same level in json,
 	// do unmarshalling separately for both structs.
 	meta := new(BlockMetadata)
-	base := new(block.Block)
 	err := json.Unmarshal(data, meta)
 	if err != nil {
 		return err
 	}
-	err = json.Unmarshal(data, base)
+	err = json.Unmarshal(data, &b.Block)
 	if err != nil {
 		return err
 	}
-	b.Block = base
 	b.BlockMetadata = *meta
 	return nil
 }

pkg/rpc/response/result/tx_raw_output.go

@@ -13,7 +13,7 @@ import (
 // TransactionOutputRaw is used as a wrapper to represents
 // a Transaction.
 type TransactionOutputRaw struct {
-	*transaction.Transaction
+	transaction.Transaction
 	TransactionMetadata
 }
 
@@ -29,7 +29,7 @@ func NewTransactionOutputRaw(tx *transaction.Transaction, header *block.Header,
 	// confirmations formula
 	confirmations := int(chain.BlockHeight() - header.Base.Index + 1)
 	return TransactionOutputRaw{
-		Transaction: tx,
+		Transaction: *tx,
 		TransactionMetadata: TransactionMetadata{
 			Blockhash:     header.Hash(),
 			Confirmations: confirmations,
@@ -48,7 +48,7 @@ func (t TransactionOutputRaw) MarshalJSON() ([]byte, error) {
 	if err != nil {
 		return nil, err
 	}
-	txBytes, err := json.Marshal(t.Transaction)
+	txBytes, err := json.Marshal(&t.Transaction)
 	if err != nil {
 		return nil, err
 	}
@@ -76,11 +76,5 @@ func (t *TransactionOutputRaw) UnmarshalJSON(data []byte) error {
 	t.Confirmations = output.Confirmations
 	t.Timestamp = output.Timestamp
 
-	transaction := new(transaction.Transaction)
-	err = json.Unmarshal(data, transaction)
-	if err != nil {
-		return err
-	}
-	t.Transaction = transaction
-	return nil
+	return json.Unmarshal(data, &t.Transaction)
 }

pkg/rpc/server/server_test.go

@@ -890,7 +890,7 @@ func testRPCProtocol(t *testing.T, doRPCCall func(string, string, *testing.T) []
 		err := json.Unmarshal(txOut, &actual)
 		require.NoErrorf(t, err, "could not parse response: %s", txOut)
 
-		assert.Equal(t, block.Transactions[0], actual.Transaction)
+		assert.Equal(t, *block.Transactions[0], actual.Transaction)
 		assert.Equal(t, 8, actual.Confirmations)
 		assert.Equal(t, TXHash, actual.Transaction.Hash())
 	})