rpc: Replace boolean argument for tx details with enum class.

Co-authored-by: Luke Dashjr <luke_github1@dashjr.org>
Co-authored-by: 0xB10C <19157360+0xB10C@users.noreply.github.com>

src/bench/rpc_blockchain.cpp

@@ -40,7 +40,7 @@ static void BlockToJsonVerbose(benchmark::Bench& bench)
 {
     TestBlockAndIndex data;
     bench.run([&] {
-        auto univalue = blockToJSON(data.block, &data.blockindex, &data.blockindex, /*verbose*/ true);
+        auto univalue = blockToJSON(data.block, &data.blockindex, &data.blockindex, TxVerbosity::SHOW_DETAILS);
         ankerl::nanobench::doNotOptimizeAway(univalue);
     });
 }
@@ -50,7 +50,7 @@ BENCHMARK(BlockToJsonVerbose);
 static void BlockToJsonVerboseWrite(benchmark::Bench& bench)
 {
     TestBlockAndIndex data;
-    auto univalue = blockToJSON(data.block, &data.blockindex, &data.blockindex, /*verbose*/ true);
+    auto univalue = blockToJSON(data.block, &data.blockindex, &data.blockindex, TxVerbosity::SHOW_DETAILS);
     bench.run([&] {
         auto str = univalue.write();
         ankerl::nanobench::doNotOptimizeAway(str);

src/core_io.h

@@ -20,6 +20,14 @@ class uint256;
 class UniValue;
 class CTxUndo;
 
+/**
+ * Verbose level for block's transaction
+ */
+enum class TxVerbosity {
+    SHOW_TXID,                //!< Only TXID for each block's transaction
+    SHOW_DETAILS             //!< Include TXID, inputs, outputs, and other common block's transaction information
+};
+
 // core_read.cpp
 CScript ParseScript(const std::string& s);
 std::string ScriptToAsmStr(const CScript& script, const bool fAttemptSighashDecode = false);

src/rest.cpp

@@ -260,7 +260,7 @@ static bool rest_headers(const std::any& context,
 static bool rest_block(const std::any& context,
                        HTTPRequest* req,
                        const std::string& strURIPart,
-                       bool showTxDetails)
+                       TxVerbosity tx_verbosity)
 {
     if (!CheckWarmup(req))
         return false;
@@ -312,7 +312,7 @@ static bool rest_block(const std::any& context,
     }
 
     case RetFormat::JSON: {
-        UniValue objBlock = blockToJSON(block, tip, pblockindex, showTxDetails);
+        UniValue objBlock = blockToJSON(block, tip, pblockindex, tx_verbosity);
         std::string strJSON = objBlock.write() + "\n";
         req->WriteHeader("Content-Type", "application/json");
         req->WriteReply(HTTP_OK, strJSON);
@@ -327,12 +327,12 @@ static bool rest_block(const std::any& context,
 
 static bool rest_block_extended(const std::any& context, HTTPRequest* req, const std::string& strURIPart)
 {
-    return rest_block(context, req, strURIPart, true);
+    return rest_block(context, req, strURIPart, TxVerbosity::SHOW_DETAILS);
 }
 
 static bool rest_block_notxdetails(const std::any& context, HTTPRequest* req, const std::string& strURIPart)
 {
-    return rest_block(context, req, strURIPart, false);
+    return rest_block(context, req, strURIPart, TxVerbosity::SHOW_TXID);
 }
 
 // A bit of a hack - dependency on a function defined in rpc/blockchain.cpp

src/rpc/blockchain.cpp

@@ -200,7 +200,7 @@ UniValue blockheaderToJSON(const CBlockIndex* tip, const CBlockIndex* blockindex
     return result;
 }
 
-UniValue blockToJSON(const CBlock& block, const CBlockIndex* tip, const CBlockIndex* blockindex, bool txDetails)
+UniValue blockToJSON(const CBlock& block, const CBlockIndex* tip, const CBlockIndex* blockindex, TxVerbosity verbosity)
 {
     UniValue result = blockheaderToJSON(tip, blockindex);
 
@@ -208,22 +208,28 @@ UniValue blockToJSON(const CBlock& block, const CBlockIndex* tip, const CBlockIn
     result.pushKV("size", (int)::GetSerializeSize(block, PROTOCOL_VERSION));
     result.pushKV("weight", (int)::GetBlockWeight(block));
     UniValue txs(UniValue::VARR);
-    if (txDetails) {
+
+    switch (verbosity) {
+        case TxVerbosity::SHOW_TXID:
+            for (const CTransactionRef& tx : block.vtx) {
+                txs.push_back(tx->GetHash().GetHex());
+            }
+            break;
+
+        case TxVerbosity::SHOW_DETAILS:
             CBlockUndo blockUndo;
             const bool have_undo = !IsBlockPruned(blockindex) && UndoReadFromDisk(blockUndo, blockindex);
+
             for (size_t i = 0; i < block.vtx.size(); ++i) {
                 const CTransactionRef& tx = block.vtx.at(i);
-            // coinbase transaction (i == 0) doesn't have undo data
+                // coinbase transaction (i.e. i == 0) doesn't have undo data
                 const CTxUndo* txundo = (have_undo && i) ? &blockUndo.vtxundo.at(i - 1) : nullptr;
                 UniValue objTx(UniValue::VOBJ);
                 TxToUniv(*tx, uint256(), objTx, true, RPCSerializationFlags(), txundo);
                 txs.push_back(objTx);
             }
-    } else {
-        for (const CTransactionRef& tx : block.vtx) {
-            txs.push_back(tx->GetHash().GetHex());
-        }
     }
+
     result.pushKV("tx", txs);
 
     return result;
@@ -931,7 +937,7 @@ static RPCHelpMan getblock()
     return RPCHelpMan{"getblock",
                 "\nIf verbosity is 0, returns a string that is serialized, hex-encoded data for block 'hash'.\n"
                 "If verbosity is 1, returns an Object with information about block <hash>.\n"
-                "If verbosity is 2, returns an Object with information about block <hash> and information about each transaction. \n",
+                "If verbosity is 2, returns an Object with information about block <hash> and information about each transaction.\n",
                 {
                     {"blockhash", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The block hash"},
                     {"verbosity|verbose", RPCArg::Type::NUM, RPCArg::Default{1}, "0 for hex-encoded data, 1 for a json object, and 2 for json object with transaction data"},
@@ -1018,7 +1024,14 @@ static RPCHelpMan getblock()
         return strHex;
     }
 
-    return blockToJSON(block, tip, pblockindex, verbosity >= 2);
+    TxVerbosity tx_verbosity;
+    if (verbosity == 1) {
+        tx_verbosity = TxVerbosity::SHOW_TXID;
+    } else {
+        tx_verbosity = TxVerbosity::SHOW_DETAILS;
+    }
+
+    return blockToJSON(block, tip, pblockindex, tx_verbosity);
 },
     };
 }

src/rpc/blockchain.h

@@ -38,7 +38,7 @@ double GetDifficulty(const CBlockIndex* blockindex);
 void RPCNotifyBlockChange(const CBlockIndex*);
 
 /** Block description to JSON */
-UniValue blockToJSON(const CBlock& block, const CBlockIndex* tip, const CBlockIndex* blockindex, bool txDetails = false) LOCKS_EXCLUDED(cs_main);
+UniValue blockToJSON(const CBlock& block, const CBlockIndex* tip, const CBlockIndex* blockindex, TxVerbosity verbosity = TxVerbosity::SHOW_TXID) LOCKS_EXCLUDED(cs_main);
 
 /** Mempool information to JSON */
 UniValue MempoolInfoToJSON(const CTxMemPool& pool);