更新json库，支持const的begin/end

3rdparty/include/meojson/json_array.h

@@ -26,7 +26,7 @@ namespace json
         template<typename ArrayType>
         array(ArrayType arr) {
             static_assert(
-                std::is_constructible<json::value, ArrayType::value_type>::value,
+                std::is_constructible<json::value, typename ArrayType::value_type>::value,
                 "Parameter can't be used to construct a json::value");
             for (auto&& ele : arr) {
                 _array_data.emplace_back(std::move(ele));
@@ -68,11 +68,15 @@ namespace json
 
         iterator begin() noexcept;
         iterator end() noexcept;
+        const_iterator begin() const noexcept;
+        const_iterator end() const noexcept;
         const_iterator cbegin() const noexcept;
         const_iterator cend() const noexcept;
 
         reverse_iterator rbegin() noexcept;
         reverse_iterator rend() noexcept;
+        const_reverse_iterator rbegin() const noexcept;
+        const_reverse_iterator rend() const noexcept;
         const_reverse_iterator crbegin() const noexcept;
         const_reverse_iterator crend() const noexcept;
 

3rdparty/include/meojson/json_object.h

@@ -4,10 +4,10 @@
 #include <unordered_map>
 #include <initializer_list>
 
+#include "json_value.h"
+
 namespace json
 {
-	class value;
-
 	class object
 	{
 	public:
@@ -24,18 +24,18 @@ namespace json
 		template<typename MapType>
 		object(MapType map) {
 			static_assert(
-				std::is_constructible<raw_object::value_type, MapType::value_type>::value,
+				std::is_constructible<raw_object::value_type, typename MapType::value_type>::value,
 				"Parameter can't be used to construct a json::object::raw_object::value_type");
 			for (auto&& ele : map) {
 				_object_data.emplace(std::move(ele));
 			}
 		}
-
+		
 		~object() = default;
 
 		bool empty() const noexcept { return _object_data.empty(); }
 		size_t size() const noexcept { return _object_data.size(); }
-		bool exist(const std::string& key) const;
+		bool exist(const std::string& key) const { return _object_data.find(key) != _object_data.cend(); }
 		const value& at(const std::string& key) const;
 		const std::string to_string() const;
 		const std::string format(std::string shift_str = "    ", size_t basic_shift_count = 0) const;
@@ -66,6 +66,8 @@ namespace json
 
 		iterator begin() noexcept;
 		iterator end() noexcept;
+		const_iterator begin() const noexcept;
+		const_iterator end() const noexcept;
 		const_iterator cbegin() const noexcept;
 		const_iterator cend() const noexcept;