From ebe4cb0bdeabd06a31072547af47cacaab7f78c0 Mon Sep 17 00:00:00 2001
From: Lexi Winter <lexi@le-fay.org>
Date: Wed, 2 Jul 2025 05:49:47 +0100
Subject: replace nihil::generator

the new implementation is much simpler and PD-licensed.  the only
downside is it doesn't support elements_of.

while here, move it to nihil.core.
---
 nihil.generator/manual_lifetime.ccm | 114 ------------------------------------
 1 file changed, 114 deletions(-)
 delete mode 100644 nihil.generator/manual_lifetime.ccm

(limited to 'nihil.generator/manual_lifetime.ccm')

diff --git a/nihil.generator/manual_lifetime.ccm b/nihil.generator/manual_lifetime.ccm
deleted file mode 100644
index 44bc0a8..0000000
--- a/nihil.generator/manual_lifetime.ccm
+++ /dev/null
@@ -1,114 +0,0 @@
-///////////////////////////////////////////////////////////////////////////////
-// Reference implementation of std::generator proposal P2168.
-//
-// See https://wg21.link/P2168 for details.
-//
-///////////////////////////////////////////////////////////////////////////////
-// Copyright Lewis Baker, Corentin Jabot
-//
-// Use, modification and distribution is subject to the Boost Software License,
-// Version 1.0.
-// (See accompanying file LICENSE or http://www.boost.org/LICENSE_1_0.txt)
-///////////////////////////////////////////////////////////////////////////////
-
-export module nihil.generator:manual_lifetime;
-
-import nihil.std;
-
-namespace nihil {
-
-template <typename T>
-struct manual_lifetime {
-	manual_lifetime() noexcept {}
-	~manual_lifetime() {}
-
-	template <typename ...Args>
-	auto construct(this manual_lifetime &self, Args && ...args)
-		noexcept(std::is_nothrow_constructible_v<T, Args...>)
-		-> T &
-	{
-		return *::new (static_cast<void*>(std::addressof(self.m_value)))
-			T(static_cast<Args &&>(args)...);
-	}
-
-	void destruct(this manual_lifetime &self)
-		noexcept(std::is_nothrow_destructible_v<T>)
-	{
-		self.m_value.~T();
-	}
-
-	auto get(this manual_lifetime &self) noexcept -> T &
-	{
-		return self.m_value;
-	}
-
-	auto get(this manual_lifetime &&self) noexcept -> T &&
-	{
-		return static_cast<T&&>(self.m_value);
-	}
-
-	auto get(this manual_lifetime const &self) noexcept -> T const &
-	{
-		return self.m_value;
-	}
-
-	auto get(this manual_lifetime const &&self) noexcept -> T const &&
-	{
-		return static_cast<T const &&>(self.m_value);
-	}
-
-private:
-	union {
-		std::remove_const_t<T> m_value;
-	};
-};
-
-template <typename T>
-struct manual_lifetime<T &> {
-	manual_lifetime() noexcept = default;
-	~manual_lifetime() = default;
-
-	auto construct(this manual_lifetime &self, T &value) noexcept -> T &
-	{
-		self.m_value = std::addressof(value);
-		return value;
-	}
-
-	auto destruct(this manual_lifetime &) noexcept -> void
-	{
-	}
-
-	auto get(this manual_lifetime const &self) noexcept -> T &
-	{
-		return *self.m_value;
-	}
-
-private:
-	T *m_value = nullptr;
-};
-
-template <typename T>
-struct manual_lifetime<T &&> {
-	manual_lifetime() noexcept = default;
-	~manual_lifetime() = default;
-
-	auto construct(this manual_lifetime &self, T &&value) noexcept -> T &&
-	{
-		self.m_value = std::addressof(value);
-		return static_cast<T &&>(value);
-	}
-
-	void destruct(this manual_lifetime &) noexcept
-	{
-	}
-
-	auto get(this manual_lifetime const &self) noexcept -> T &&
-	{
-		return static_cast<T &&>(*self.m_value);
-	}
-
-private:
-	T* m_value = nullptr;
-};
-
-}
-- 
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