From 6ebec36b2de9efb1f1d6da900c8e6b9b6911d54f Mon Sep 17 00:00:00 2001
From: Patrick <patrick@maschek.info>
Date: Mon, 29 Jul 2024 16:53:38 +0200
Subject: [PATCH] fixed emplace()

---
 include/const_vector.hpp | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/include/const_vector.hpp b/include/const_vector.hpp
index 3fecbcb..94b6f90 100644
--- a/include/const_vector.hpp
+++ b/include/const_vector.hpp
@@ -467,19 +467,20 @@ namespace cc {
 	}
 
 	template<typename T, std::size_t N>
-	template<class... Args>
+	template<typename... Args>
 	constexpr const_vector<T, N>::iterator const_vector<T, N>::emplace(const_vector::const_iterator pos, Args &&... args)
 	{
-		if (_size == N) throw std::exception();
+		if (_size == N) throw std::length_error("No space left in vector");
 
-		T obj(std::forward<Args>(args)...);
-		
-		ptrdiff_t i = pos - _arr;
-		std::move(_arr + i, _arr + _size, _arr + i + 1);
-		_erase_no_move(pos);
-		_arr[i] = std::move(obj);
-		
-		return pos;
+		auto it = const_cast<iterator>(pos);
+
+		if (it != end()) {
+			std::move_backward(it, end(), end() + 1);
+		}
+		*it = T(std::forward<Args>(args)...);
+
+		++_size;
+		return it;
 	}
 
 	template<typename T, std::size_t N>