rpc: Replace boost::variant with std::variant for RPCArg.m_fallback

2 files changed, 9 insertions, 10 deletions

diff --git a/src/rpc/util.cpp b/src/rpc/util.cpp
index 1b21587b6d..e377a80fbd 100644
--- a/src/rpc/util.cpp
+++ b/src/rpc/util.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2017-2020 The Bitcoin Core developers
+// Copyright (c) 2017-2021 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -562,10 +562,10 @@ std::string RPCArg::GetName() const
 
 bool RPCArg::IsOptional() const
 {
-    if (m_fallback.which() == 1) {
+    if (m_fallback.index() == 1) {
         return true;
     } else {
-        return RPCArg::Optional::NO != boost::get<RPCArg::Optional>(m_fallback);
+        return RPCArg::Optional::NO != std::get<RPCArg::Optional>(m_fallback);
     }
 }
 
@@ -609,10 +609,10 @@ std::string RPCArg::ToDescriptionString() const
         }
         } // no default case, so the compiler can warn about missing cases
     }
-    if (m_fallback.which() == 1) {
-        ret += ", optional, default=" + boost::get<std::string>(m_fallback);
+    if (m_fallback.index() == 1) {
+        ret += ", optional, default=" + std::get<std::string>(m_fallback);
     } else {
-        switch (boost::get<RPCArg::Optional>(m_fallback)) {
+        switch (std::get<RPCArg::Optional>(m_fallback)) {
         case RPCArg::Optional::OMITTED: {
             // nothing to do. Element is treated as if not present and has no default value
             break;
diff --git a/src/rpc/util.h b/src/rpc/util.h
index 45b0bb0c7e..942c243718 100644
--- a/src/rpc/util.h
+++ b/src/rpc/util.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2017-2020 The Bitcoin Core developers
+// Copyright (c) 2017-2021 The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
@@ -19,10 +19,9 @@
 #include <util/check.h>
 
 #include <string>
+#include <variant>
 #include <vector>
 
-#include <boost/variant.hpp>
-
 /**
  * String used to describe UNIX epoch time in documentation, factored out to a
  * constant for consistency.
@@ -144,7 +143,7 @@ struct RPCArg {
          */
         OMITTED,
     };
-    using Fallback = boost::variant<Optional, /* default value for optional args */ std::string>;
+    using Fallback = std::variant<Optional, /* default value for optional args */ std::string>;
     const std::string m_names; //!< The name of the arg (can be empty for inner args, can contain multiple aliases separated by | for named request arguments)
     const Type m_type;
     const bool m_hidden;