Fixed return type

Author: liuzicheng1987

include/rfl/json/read.hpp

@@ -6,6 +6,7 @@
 #include <istream>
 #include <string>
 
+#include "../internal/wrap_in_rfl_array_t.hpp"
 #include "Parser.hpp"
 #include "Reader.hpp"
 
@@ -24,9 +25,12 @@ auto read(const InputVarType& _obj) {
 
 /// Parses an object from JSON using reflection.
 template <class T>
-auto read(const std::string& _json_str) {
+Result<internal::wrap_in_rfl_array_t<T>> read(const std::string& _json_str) {
   using PtrType = std::unique_ptr<yyjson_doc, void (*)(yyjson_doc*)>;
   yyjson_doc* doc = yyjson_read(_json_str.c_str(), _json_str.size(), 0);
+  if (!doc) {
+    return Error("Could not parse document!");
+  }
   const auto ptr = PtrType(doc, yyjson_doc_free);
   return read<T>(InputVarType(yyjson_doc_get_root(doc)));
 }

include/rfl/xml/read.hpp

@@ -24,7 +24,7 @@ auto read(const InputVarType& _var) {
 
 /// Parses an object from XML using reflection.
 template <class T>
-auto read(const std::string& _xml_str) {
+Result<T> read(const std::string& _xml_str) {
   pugi::xml_document doc;
   const auto result = doc.load_string(_xml_str.c_str());
   if (!result) {

include/rfl/yaml/read.hpp

@@ -6,6 +6,7 @@
 #include <istream>
 #include <string>
 
+#include "../internal/wrap_in_rfl_array_t.hpp"
 #include "Parser.hpp"
 #include "Reader.hpp"
 
@@ -23,7 +24,7 @@ auto read(const InputVarType& _var) {
 
 /// Parses an object from YAML using reflection.
 template <class T>
-auto read(const std::string& _yaml_str) {
+Result<internal::wrap_in_rfl_array_t<T>> read(const std::string& _yaml_str) {
   try {
     const auto var = InputVarType(YAML::Load(_yaml_str));
     return read<T>(var);