From 6580b200db70bc175526868b1b632fa19220afc1 Mon Sep 17 00:00:00 2001
From: Mayukha Vadari <mvadari@ripple.com>
Date: Mon, 10 Aug 2026 13:10:18 -0400
Subject: [PATCH] refactor: Replace boost::lexical_cast with existing
 alternatives (#7991)

---
 include/xrpl/beast/unit_test/reporter.h          |  3 +--
 include/xrpl/beast/unit_test/suite.h             |  3 +--
 src/test/unit_test/multi_runner.cpp              |  3 +--
 .../rpc/handlers/account/AccountChannels.cpp     | 16 +++++-----------
 src/xrpld/rpc/handlers/account/AccountLines.cpp  | 16 +++++-----------
 src/xrpld/rpc/handlers/account/AccountOffers.cpp | 16 +++++-----------
 6 files changed, 18 insertions(+), 39 deletions(-)

diff --git a/include/xrpl/beast/unit_test/reporter.h b/include/xrpl/beast/unit_test/reporter.h
index 0fe77a7862..cbd1c7e70d 100644
--- a/include/xrpl/beast/unit_test/reporter.h
+++ b/include/xrpl/beast/unit_test/reporter.h
@@ -8,7 +8,6 @@
 #include <xrpl/beast/unit_test/runner.h>
 #include <xrpl/beast/unit_test/suite_info.h>
 
-#include <boost/lexical_cast.hpp>
 #include <boost/optional.hpp>
 
 #include <algorithm>
@@ -188,7 +187,7 @@ Reporter<Unused>::fmtdur(clock_type::duration const& d)
     using namespace std::chrono;
     auto const ms = duration_cast<milliseconds>(d);
     if (ms < seconds{1})
-        return boost::lexical_cast<std::string>(ms.count()) + "ms";
+        return std::to_string(ms.count()) + "ms";
     std::stringstream ss;
     ss << std::fixed << std::setprecision(1) << (ms.count() / 1000.) << "s";
     return ss.str();
diff --git a/include/xrpl/beast/unit_test/suite.h b/include/xrpl/beast/unit_test/suite.h
index e24904a87b..a727e3fc77 100644
--- a/include/xrpl/beast/unit_test/suite.h
+++ b/include/xrpl/beast/unit_test/suite.h
@@ -7,7 +7,6 @@
 #include <xrpl/beast/unit_test/runner.h>
 
 #include <boost/filesystem.hpp>
-#include <boost/lexical_cast.hpp>
 #include <boost/throw_exception.hpp>
 
 #include <exception>
@@ -30,7 +29,7 @@ makeReason(String const& reason, char const* file, int line)
     namespace fs = boost::filesystem;
     s.append(fs::path{file}.filename().string());
     s.append("(");
-    s.append(boost::lexical_cast<std::string>(line));
+    s.append(std::to_string(line));
     s.append(")");
     return s;
 }
diff --git a/src/test/unit_test/multi_runner.cpp b/src/test/unit_test/multi_runner.cpp
index 71208313a4..918fc7c89f 100644
--- a/src/test/unit_test/multi_runner.cpp
+++ b/src/test/unit_test/multi_runner.cpp
@@ -7,7 +7,6 @@
 #include <boost/interprocess/creation_tags.hpp>
 #include <boost/interprocess/detail/os_file_functions.hpp>
 #include <boost/interprocess/shared_memory_object.hpp>
-#include <boost/lexical_cast.hpp>
 
 #include <algorithm>
 #include <cassert>
@@ -36,7 +35,7 @@ fmtdur(typename clock_type::duration const& d)
     using namespace std::chrono;
     auto const ms = duration_cast<milliseconds>(d);
     if (ms < seconds{1})
-        return boost::lexical_cast<std::string>(ms.count()) + "ms";
+        return std::to_string(ms.count()) + "ms";
     std::stringstream ss;
     ss << std::fixed << std::setprecision(1) << (ms.count() / 1000.) << "s";
     return ss.str();
diff --git a/src/xrpld/rpc/handlers/account/AccountChannels.cpp b/src/xrpld/rpc/handlers/account/AccountChannels.cpp
index d50bf1cf07..f2da1e31ee 100644
--- a/src/xrpld/rpc/handlers/account/AccountChannels.cpp
+++ b/src/xrpld/rpc/handlers/account/AccountChannels.cpp
@@ -3,6 +3,7 @@
 #include <xrpld/rpc/detail/RPCLedgerHelpers.h>
 #include <xrpld/rpc/detail/Tuning.h>
 
+#include <xrpl/basics/StringUtilities.h>
 #include <xrpl/basics/base_uint.h>
 #include <xrpl/basics/strHex.h>
 #include <xrpl/beast/utility/Zero.h>
@@ -22,9 +23,6 @@
 #include <xrpl/protocol/tokens.h>
 #include <xrpl/resource/Fees.h>
 
-#include <boost/lexical_cast.hpp>
-#include <boost/lexical_cast/bad_lexical_cast.hpp>
-
 #include <cstdint>
 #include <memory>
 #include <optional>
@@ -129,7 +127,7 @@ doAccountChannels(rpc::JsonContext& context)
             return rpc::expectedFieldError(jss::marker, "string");
 
         // Marker is composed of a comma separated index and start hint. The
-        // former will be read as hex, and the latter using boost lexical cast.
+        // former will be read as hex, and the latter as a decimal integer.
         std::stringstream marker(params[jss::marker].asString());
         std::string value;
         if (!std::getline(marker, value, ','))
@@ -141,14 +139,10 @@ doAccountChannels(rpc::JsonContext& context)
         if (!std::getline(marker, value, ','))
             return rpcError(RpcInvalidParams);
 
-        try
-        {
-            startHint = boost::lexical_cast<std::uint64_t>(value);
-        }
-        catch (boost::bad_lexical_cast&)
-        {
+        auto const hint = toUInt64(value);
+        if (!hint.has_value())
             return rpcError(RpcInvalidParams);
-        }
+        startHint = *hint;
 
         // We then must check if the object pointed to by the marker is actually
         // owned by the account in the request.
diff --git a/src/xrpld/rpc/handlers/account/AccountLines.cpp b/src/xrpld/rpc/handlers/account/AccountLines.cpp
index f134c8af92..4a6d22d5d8 100644
--- a/src/xrpld/rpc/handlers/account/AccountLines.cpp
+++ b/src/xrpld/rpc/handlers/account/AccountLines.cpp
@@ -4,6 +4,7 @@
 #include <xrpld/rpc/detail/TrustLine.h>
 #include <xrpld/rpc/detail/Tuning.h>
 
+#include <xrpl/basics/StringUtilities.h>
 #include <xrpl/basics/base_uint.h>
 #include <xrpl/beast/utility/Zero.h>
 #include <xrpl/beast/utility/instrumentation.h>
@@ -22,9 +23,6 @@
 #include <xrpl/protocol/jss.h>
 #include <xrpl/resource/Fees.h>
 
-#include <boost/lexical_cast.hpp>
-#include <boost/lexical_cast/bad_lexical_cast.hpp>
-
 #include <cstdint>
 #include <memory>
 #include <optional>
@@ -153,7 +151,7 @@ doAccountLines(rpc::JsonContext& context)
             return rpc::expectedFieldError(jss::marker, "string");
 
         // Marker is composed of a comma separated index and start hint. The
-        // former will be read as hex, and the latter using boost lexical cast.
+        // former will be read as hex, and the latter as a decimal integer.
         std::stringstream marker(params[jss::marker].asString());
         std::string value;
         if (!std::getline(marker, value, ','))
@@ -165,14 +163,10 @@ doAccountLines(rpc::JsonContext& context)
         if (!std::getline(marker, value, ','))
             return rpcError(RpcInvalidParams);
 
-        try
-        {
-            startHint = boost::lexical_cast<std::uint64_t>(value);
-        }
-        catch (boost::bad_lexical_cast&)
-        {
+        auto const hint = toUInt64(value);
+        if (!hint.has_value())
             return rpcError(RpcInvalidParams);
-        }
+        startHint = *hint;
 
         // We then must check if the object pointed to by the marker is actually
         // owned by the account in the request.
diff --git a/src/xrpld/rpc/handlers/account/AccountOffers.cpp b/src/xrpld/rpc/handlers/account/AccountOffers.cpp
index 1467b14b48..a7933f65a7 100644
--- a/src/xrpld/rpc/handlers/account/AccountOffers.cpp
+++ b/src/xrpld/rpc/handlers/account/AccountOffers.cpp
@@ -3,6 +3,7 @@
 #include <xrpld/rpc/detail/RPCLedgerHelpers.h>
 #include <xrpld/rpc/detail/Tuning.h>
 
+#include <xrpl/basics/StringUtilities.h>
 #include <xrpl/basics/base_uint.h>
 #include <xrpl/beast/utility/Zero.h>
 #include <xrpl/beast/utility/instrumentation.h>
@@ -20,9 +21,6 @@
 #include <xrpl/protocol/jss.h>
 #include <xrpl/resource/Fees.h>
 
-#include <boost/lexical_cast.hpp>
-#include <boost/lexical_cast/bad_lexical_cast.hpp>
-
 #include <cstdint>
 #include <memory>
 #include <optional>
@@ -97,7 +95,7 @@ doAccountOffers(rpc::JsonContext& context)
             return rpc::expectedFieldError(jss::marker, "string");
 
         // Marker is composed of a comma separated index and start hint. The
-        // former will be read as hex, and the latter using boost lexical cast.
+        // former will be read as hex, and the latter as a decimal integer.
         std::stringstream marker(params[jss::marker].asString());
         std::string value;
         if (!std::getline(marker, value, ','))
@@ -109,14 +107,10 @@ doAccountOffers(rpc::JsonContext& context)
         if (!std::getline(marker, value, ','))
             return rpc::invalidFieldError(jss::marker);
 
-        try
-        {
-            startHint = boost::lexical_cast<std::uint64_t>(value);
-        }
-        catch (boost::bad_lexical_cast&)
-        {
+        auto const hint = toUInt64(value);
+        if (!hint.has_value())
             return rpc::invalidFieldError(jss::marker);
-        }
+        startHint = *hint;
 
         // We then must check if the object pointed to by the marker is actually
         // owned by the account in the request.