From 8425900fe08b2afd603c3c920eac18a06cc3ab5a Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Mon, 26 Dec 2022 14:06:39 +0300
Subject: [PATCH] Implement synchronous implementation of async::executor

---
 .../psemek/async/synchronous_executor.hpp     | 26 ++++++++++++++
 libs/async/source/synchronous_executor.cpp    | 35 +++++++++++++++++++
 2 files changed, 61 insertions(+)
 create mode 100644 libs/async/include/psemek/async/synchronous_executor.hpp
 create mode 100644 libs/async/source/synchronous_executor.cpp

diff --git a/libs/async/include/psemek/async/synchronous_executor.hpp b/libs/async/include/psemek/async/synchronous_executor.hpp
new file mode 100644
index 00000000..45b6fa3f
--- /dev/null
+++ b/libs/async/include/psemek/async/synchronous_executor.hpp
@@ -0,0 +1,26 @@
+#pragma once
+
+#include <psemek/async/executor.hpp>
+
+namespace psemek::async
+{
+
+	struct synchronous_executor
+		: executor
+	{
+		void post(task t) override;
+
+		void post_at(clock::time_point time, task t) override;
+
+		void stop() override;
+
+		void wait() override;
+
+		void wait_for(clock::duration period) override;
+
+		void wait_until(clock::time_point time) override;
+
+		std::size_t task_count() const override;
+	};
+
+}
diff --git a/libs/async/source/synchronous_executor.cpp b/libs/async/source/synchronous_executor.cpp
new file mode 100644
index 00000000..45eadb09
--- /dev/null
+++ b/libs/async/source/synchronous_executor.cpp
@@ -0,0 +1,35 @@
+#include <psemek/async/synchronous_executor.hpp>
+
+#include <stdexcept>
+
+namespace psemek::async
+{
+
+	void synchronous_executor::post(task t)
+	{
+		t();
+	}
+
+	void synchronous_executor::post_at(clock::time_point, task)
+	{
+		throw std::runtime_error("synchronous_executor doesn't support executor::post_at");
+	}
+
+	void synchronous_executor::stop()
+	{}
+
+	void synchronous_executor::wait()
+	{}
+
+	void synchronous_executor::wait_for(clock::duration)
+	{}
+
+	void synchronous_executor::wait_until(clock::time_point)
+	{}
+
+	std::size_t synchronous_executor::task_count() const
+	{
+		return 0;
+	}
+
+}