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authorMarcoFalke <falke.marco@gmail.com>2018-11-23 11:21:38 -0500
committerMarcoFalke <falke.marco@gmail.com>2018-11-27 14:18:19 -0500
commit1db0096f61680d2b2a9cfe454154de3ad121a9d3 (patch)
tree0c6e79b59ed1822cf86ac97866d0c67a2aea29b8 /src/rpc/util.cpp
parent8c119b27551f56db72bfbdb9ed632b4deb19e161 (diff)
rpc: Pass argument descriptions to RPCHelpMan
Diffstat (limited to 'src/rpc/util.cpp')
-rw-r--r--src/rpc/util.cpp198
1 files changed, 194 insertions, 4 deletions
diff --git a/src/rpc/util.cpp b/src/rpc/util.cpp
index 0b6bbcb1dc..a1c0134146 100644
--- a/src/rpc/util.cpp
+++ b/src/rpc/util.cpp
@@ -129,10 +129,124 @@ UniValue DescribeAddress(const CTxDestination& dest)
return boost::apply_visitor(DescribeAddressVisitor(), dest);
}
+struct Section {
+ Section(const std::string& left, const std::string& right)
+ : m_left{left}, m_right{right} {}
+ const std::string m_left;
+ const std::string m_right;
+};
+
+struct Sections {
+ std::vector<Section> m_sections;
+ size_t m_max_pad{0};
+
+ void PushSection(const Section& s)
+ {
+ m_max_pad = std::max(m_max_pad, s.m_left.size());
+ m_sections.push_back(s);
+ }
+
+ enum class OuterType {
+ ARR,
+ OBJ,
+ NAMED_ARG, // Only set on first recursion
+ };
+
+ void Push(const RPCArg& arg, const size_t current_indent = 5, const OuterType outer_type = OuterType::NAMED_ARG)
+ {
+ const auto indent = std::string(current_indent, ' ');
+ const auto indent_next = std::string(current_indent + 2, ' ');
+ switch (arg.m_type) {
+ case RPCArg::Type::STR_HEX:
+ case RPCArg::Type::STR:
+ case RPCArg::Type::NUM:
+ case RPCArg::Type::AMOUNT:
+ case RPCArg::Type::BOOL: {
+ if (outer_type == OuterType::NAMED_ARG) return; // Nothing more to do for non-recursive types on first recursion
+ auto left = indent;
+ if (arg.m_type_str.size() != 0 && outer_type == OuterType::OBJ) {
+ left += "\"" + arg.m_name + "\":" + arg.m_type_str.at(0);
+ } else {
+ left += outer_type == OuterType::OBJ ? arg.ToStringObj() : arg.ToString();
+ }
+ left += ",";
+ PushSection({left, arg.ToDescriptionString(/* implicitly_required */ outer_type == OuterType::ARR)});
+ break;
+ }
+ case RPCArg::Type::OBJ:
+ case RPCArg::Type::OBJ_USER_KEYS: {
+ const auto right = outer_type == OuterType::NAMED_ARG ? "" : arg.ToDescriptionString(/* implicitly_required */ outer_type == OuterType::ARR);
+ PushSection({indent + "{", right});
+ for (const auto& arg_inner : arg.m_inner) {
+ Push(arg_inner, current_indent + 2, OuterType::OBJ);
+ }
+ if (arg.m_type != RPCArg::Type::OBJ) {
+ PushSection({indent_next + "...", ""});
+ }
+ PushSection({indent + "}" + (outer_type != OuterType::NAMED_ARG ? "," : ""), ""});
+ break;
+ }
+ case RPCArg::Type::ARR: {
+ auto left = indent;
+ left += outer_type == OuterType::OBJ ? "\"" + arg.m_name + "\":" : "";
+ left += "[";
+ const auto right = outer_type == OuterType::NAMED_ARG ? "" : arg.ToDescriptionString(/* implicitly_required */ outer_type == OuterType::ARR);
+ PushSection({left, right});
+ for (const auto& arg_inner : arg.m_inner) {
+ Push(arg_inner, current_indent + 2, OuterType::ARR);
+ }
+ PushSection({indent_next + "...", ""});
+ PushSection({indent + "]" + (outer_type != OuterType::NAMED_ARG ? "," : ""), ""});
+ break;
+ }
+
+ // no default case, so the compiler can warn about missing cases
+ }
+ }
+
+ std::string ToString() const
+ {
+ std::string ret;
+ const size_t pad = m_max_pad + 4;
+ for (const auto& s : m_sections) {
+ if (s.m_right.empty()) {
+ ret += s.m_left;
+ ret += "\n";
+ continue;
+ }
+
+ std::string left = s.m_left;
+ left.resize(pad, ' ');
+ ret += left;
+
+ // Properly pad after newlines
+ std::string right;
+ size_t begin = 0;
+ size_t new_line_pos = s.m_right.find_first_of('\n');
+ while (true) {
+ right += s.m_right.substr(begin, new_line_pos - begin);
+ if (new_line_pos == std::string::npos) {
+ break; //No new line
+ }
+ right += "\n" + std::string(pad, ' ');
+ begin = s.m_right.find_first_not_of(' ', new_line_pos + 1);
+ if (begin == std::string::npos) {
+ break; // Empty line
+ }
+ new_line_pos = s.m_right.find_first_of('\n', begin + 1);
+ }
+ ret += right;
+ ret += "\n";
+ }
+ return ret;
+ }
+};
+
std::string RPCHelpMan::ToString() const
{
std::string ret;
+ // Oneline summary
ret += m_name;
bool is_optional{false};
for (const auto& arg : m_args) {
@@ -145,13 +259,89 @@ std::string RPCHelpMan::ToString() const
// If support for positional arguments is deprecated in the future, remove this line
assert(!is_optional);
}
- ret += arg.ToString();
+ ret += arg.ToString(/* oneline */ true);
}
if (is_optional) ret += " )";
ret += "\n";
+ // Description
ret += m_description;
+ // Arguments
+ Sections sections;
+ for (size_t i{0}; i < m_args.size(); ++i) {
+ const auto& arg = m_args.at(i);
+
+ if (i == 0) ret += "\nArguments:\n";
+
+ // Push named argument name and description
+ const auto str_wrapper = (arg.m_type == RPCArg::Type::STR || arg.m_type == RPCArg::Type::STR_HEX) ? "\"" : "";
+ sections.m_sections.emplace_back(std::to_string(i + 1) + ". " + str_wrapper + arg.m_name + str_wrapper, arg.ToDescriptionString());
+ sections.m_max_pad = std::max(sections.m_max_pad, sections.m_sections.back().m_left.size());
+
+ // Recursively push nested args
+ sections.Push(arg);
+ }
+ ret += sections.ToString();
+
+ return ret;
+}
+
+std::string RPCArg::ToDescriptionString(const bool implicitly_required) const
+{
+ std::string ret;
+ ret += "(";
+ if (m_type_str.size() != 0) {
+ ret += m_type_str.at(1);
+ } else {
+ switch (m_type) {
+ case Type::STR_HEX:
+ case Type::STR: {
+ ret += "string";
+ break;
+ }
+ case Type::NUM: {
+ ret += "numeric";
+ break;
+ }
+ case Type::AMOUNT: {
+ ret += "numeric or string";
+ break;
+ }
+ case Type::BOOL: {
+ ret += "boolean";
+ break;
+ }
+ case Type::OBJ:
+ case Type::OBJ_USER_KEYS: {
+ ret += "json object";
+ break;
+ }
+ case Type::ARR: {
+ ret += "json array";
+ break;
+ }
+
+ // no default case, so the compiler can warn about missing cases
+ }
+ }
+ if (!implicitly_required) {
+ ret += ", ";
+ if (m_optional) {
+ ret += "optional";
+ if (!m_default_value.empty()) {
+ ret += ", default=" + m_default_value;
+ } else {
+ // TODO enable this assert, when all optional parameters have their default value documented
+ //assert(false);
+ }
+ } else {
+ ret += "required";
+ assert(m_default_value.empty()); // Default value is ignored, and must not be present
+ }
+ }
+ ret += ")";
+ ret += m_description.empty() ? "" : " " + m_description;
return ret;
}
@@ -185,9 +375,9 @@ std::string RPCArg::ToStringObj() const
assert(false);
}
-std::string RPCArg::ToString() const
+std::string RPCArg::ToString(const bool oneline) const
{
- if (!m_oneline_description.empty()) return m_oneline_description;
+ if (oneline && !m_oneline_description.empty()) return m_oneline_description;
switch (m_type) {
case Type::STR_HEX:
@@ -215,7 +405,7 @@ std::string RPCArg::ToString() const
case Type::ARR: {
std::string res;
for (const auto& i : m_inner) {
- res += i.ToString() + ",";
+ res += i.ToString(oneline) + ",";
}
return "[" + res + "...]";
}