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/generator_promise.ccm | 61 -----------------------------------
 1 file changed, 61 deletions(-)
 delete mode 100644 nihil.generator/generator_promise.ccm

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

diff --git a/nihil.generator/generator_promise.ccm b/nihil.generator/generator_promise.ccm
deleted file mode 100644
index 3e8aa8c..0000000
--- a/nihil.generator/generator_promise.ccm
+++ /dev/null
@@ -1,61 +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:generator_promise;
-
-import nihil.std;
-import :forward;
-import :generator_promise_base;
-import :promise_base_alloc;
-
-namespace nihil {
-
-export template <typename Generator, typename ByteAllocator, bool ExplicitAllocator = false>
-struct generator_promise;
-
-export template <typename Ref, typename Value, typename Alloc, typename ByteAllocator,
-          bool ExplicitAllocator>
-struct generator_promise<generator<Ref, Value, Alloc>, ByteAllocator, ExplicitAllocator> final
-	: public generator_promise_base<Ref>,
-	  public promise_base_alloc<ByteAllocator>
-{
-	generator_promise() noexcept
-		: generator_promise_base<Ref>(
-			  std::coroutine_handle<generator_promise>::from_promise(*this))
-	{
-	}
-
-	auto get_return_object() noexcept -> generator<Ref, Value, Alloc>
-	{
-		return generator<Ref, Value, Alloc>{
-			std::coroutine_handle<generator_promise>::from_promise(*this)};
-	}
-
-	using generator_promise_base<Ref>::yield_value;
-
-	template <std::ranges::range Rng>
-	auto yield_value(nihil::elements_of<Rng> &&x) -> typename generator_promise_base<
-		Ref>::template yield_sequence_awaiter<generator<Ref, Value, Alloc>>
-	{
-		static_assert(!ExplicitAllocator,
-		              "This coroutine has an explicit allocator specified with "
-		              "std::allocator_arg so an allocator needs to be passed "
-		              "explicitely to std::elements_of");
-		return [](auto &&rng) -> generator<Ref, Value, Alloc> {
-			for (auto &&e : rng)
-				co_yield static_cast<decltype(e)>(e);
-		}(std::forward<Rng>(x.get()));
-	}
-};
-
-} // namespace nihil
-- 
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