fix toml encoder

src/coders/toml.cpp

@@ -239,13 +239,52 @@ dv::value toml::parse(std::string_view file, std::string_view source) {
     return TomlReader(file, source).read();
 }
 
+static void to_string(std::stringstream& ss, const dv::value& value);
+
+static void list_to_string(std::stringstream& ss, const dv::value& list) {
+    ss << "[";
+    int index = 0;
+    for (const auto& value : list) {
+        if (index > 0) {
+            ss << ", ";
+        }
+        to_string(ss, value);
+        index++;
+    }
+    ss << "]";
+}
+
+static void object_to_string(std::stringstream& ss, const dv::value& object) {
+    ss << "{";
+    int index = 0;
+    for (const auto& [key, value] : object.asObject()) {
+        if (index > 0) {
+            ss << ", ";
+        }
+        ss << key << " = ";
+        to_string(ss, value);
+        index++;
+    }
+    ss << "}";
+}
+
+static void to_string(std::stringstream& ss, const dv::value& value) {
+    if (value.isObject()) {
+        object_to_string(ss, value);
+    } else if (value.isList()) {
+        list_to_string(ss, value);
+    } else {
+        ss << value;
+    }
+}
+
 std::string toml::stringify(const dv::value& root, const std::string& name) {
     std::stringstream ss;
     if (!name.empty()) {
         ss << "[" << name << "]\n";
     }
     for (const auto& [key, value] : root.asObject()) {
-        if (!value.isObject()) {
+        if (!value.isObject() && !value.isList()) {
             ss << key << " = " << value << "\n";
         }
     }
@@ -253,6 +292,15 @@ std::string toml::stringify(const dv::value& root, const std::string& name) {
         if (value.isObject()) {
             ss << "\n" << toml::stringify(value,
                       name.empty() ? key : name + "." + key);
+        } else if (value.isList()) {
+            ss << (name.empty() ? key : name + "." + key) << " = [";
+            for (size_t i = 0; i < value.size(); i++) {
+                if (i > 0) {
+                    ss << ", ";
+                }
+                to_string(ss, value[i]);
+            }
+            ss << "]";
         }
     }
     return ss.str();

src/logic/scripting/lua/libs/libtoml.cpp

@@ -23,4 +23,5 @@ static int l_toml_parse(lua::State* L) {
 const luaL_Reg tomllib[] = {
     {"tostring", lua::wrap<l_toml_stringify>},
     {"parse", lua::wrap<l_toml_parse>},
-    {NULL, NULL}};
+    {NULL, NULL}
+};

test/coders/toml.cpp

@@ -26,6 +26,9 @@ TEST(TOML, EncodeDecode) {
         object["score"] = score;
         object["visible"] = visible;
         object["data"] = srcBytes;
+        object["values"] = dv::list({
+            5, 3, std::string("hello"), dv::object({{"number", 1234}})
+        });
 
         text = toml::stringify(object, "");
         std::cout << text << std::endl;