c++, codec-json: Added struct to json encoding and fixed a buffer bug on

the fly

2 files changed, 18 insertions, 1 deletions

diff --git a/src/core/error.cpp b/src/core/error.cpp
index 9520972..e777c84 100644
--- a/src/core/error.cpp
+++ b/src/core/error.cpp
@@ -32,7 +32,7 @@ const std::string_view error::get_message() const {
 }
 
 bool error::failed() const {
-	return this->is_type<err::no_error>();
+	return !this->is_type<err::no_error>();
 }
 
 bool error::is_critical() const {
diff --git a/src/core/templates.h b/src/core/templates.h
index 6c0a74e..fcac61b 100644
--- a/src/core/templates.h
+++ b/src/core/templates.h
@@ -53,4 +53,21 @@ struct parameter_key_pack_index {
 				  "Provided string_literal doesn't exist in searched list");
 };
 
+template <size_t i, size_t s, string_literal Key0, string_literal... Keys>
+struct parameter_key_pack_type_helper {
+	static constexpr string_literal literal = parameter_key_pack_type_helper<i, s+1, Keys...>::literal;
+};
+
+template <size_t i, string_literal Key0, string_literal... Keys>
+struct parameter_key_pack_type_helper<i, i, Key0, Keys...> {
+	static constexpr string_literal literal = Key0;
+};
+
+template <size_t i, string_literal... Keys>
+struct parameter_key_pack_type {
+	static constexpr string_literal literal = parameter_key_pack_type_helper<i, 0, Keys...>::literal;
+
+	static_assert(i < sizeof...(Keys), "Provided index is too large in list");
+};
+
 }