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-rw-r--r--src/rpc/util.cpp29
1 files changed, 22 insertions, 7 deletions
diff --git a/src/rpc/util.cpp b/src/rpc/util.cpp
index 023b4b6746..e37af953fa 100644
--- a/src/rpc/util.cpp
+++ b/src/rpc/util.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2017-2018 The Bitcoin Core developers
+// Copyright (c) 2017-2019 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
@@ -315,6 +315,17 @@ std::string RPCExamples::ToDescriptionString() const
return m_examples.empty() ? m_examples : "\nExamples:\n" + m_examples;
}
+bool RPCHelpMan::IsValidNumArgs(size_t num_args) const
+{
+ size_t num_required_args = 0;
+ for (size_t n = m_args.size(); n > 0; --n) {
+ if (!m_args.at(n - 1).IsOptional()) {
+ num_required_args = n;
+ break;
+ }
+ }
+ return num_required_args <= num_args && num_args <= m_args.size();
+}
std::string RPCHelpMan::ToString() const
{
std::string ret;
@@ -323,12 +334,7 @@ std::string RPCHelpMan::ToString() const
ret += m_name;
bool was_optional{false};
for (const auto& arg : m_args) {
- bool optional;
- if (arg.m_fallback.which() == 1) {
- optional = true;
- } else {
- optional = RPCArg::Optional::NO != boost::get<RPCArg::Optional>(arg.m_fallback);
- }
+ const bool optional = arg.IsOptional();
ret += " ";
if (optional) {
if (!was_optional) ret += "( ";
@@ -370,6 +376,15 @@ std::string RPCHelpMan::ToString() const
return ret;
}
+bool RPCArg::IsOptional() const
+{
+ if (m_fallback.which() == 1) {
+ return true;
+ } else {
+ return RPCArg::Optional::NO != boost::get<RPCArg::Optional>(m_fallback);
+ }
+}
+
std::string RPCArg::ToDescriptionString() const
{
std::string ret;