wip macOS port

1 files changed, 0 insertions, 157 deletions

diff --git a/nihil.posix/posix.fd.ccm b/nihil.posix/posix.fd.ccm
deleted file mode 100644
index b937f46..0000000
--- a/nihil.posix/posix.fd.ccm
+++ /dev/null
@@ -1,157 +0,0 @@
-/*
- * This source code is released into the public domain.
- */
-
-module;
-
-#include <coroutine>
-#include <expected>
-#include <ranges>
-#include <span>
-#include <stdexcept>
-#include <system_error>
-
-export module nihil.posix:fd;
-
-import nihil.error;
-import nihil.monad;
-
-namespace nihil {
-
-/*
- * fd: a file descriptor.
- */
-
-export struct fd final {
-	// Construct an empty (invalid) fd.
-	fd() noexcept;
-
-	// Construct an fd from an exising file destrictor, taking ownership.
-	fd(int fd_) noexcept;
-
-	// Destructor.  Close the fd, discarding any errors.
-	~fd();
-
-	// Move from another fd, leaving the moved-from fd in an invalid state.
-	fd(fd &&other) noexcept;
-	auto operator=(this fd &, fd &&other) noexcept -> fd &;
-
-	// Not copyable.
-	fd(fd const &) = delete;
-	fd& operator=(this fd &, fd const &) = delete;
-
-	// Return true if this fd is valid (open).
-	[[nodiscard]] explicit operator bool(this fd const &self) noexcept;
-
-	// Close the wrapped fd.
-	[[nodiscard]] auto close(this fd &self) -> std::expected<void, error>;
-
-	// Return the stored fd.
-	[[nodiscard]] auto get(this fd const &self) -> int;
-
-	// Release the stored fd and return it.  The caller must close it.
-	[[nodiscard]] auto release(this fd &&self) -> int;
-
-	// Write data from the provided buffer to the fd.  Returns the
-	// number of bytes written.
-	[[nodiscard]] auto write(this fd &self, std::span<std::byte const>) 
-		-> std::expected<std::size_t, error>;
-
-	// Read data from the fd to the provided buffer.  Returns a
-	// subspan containing the data which was read.
-	[[nodiscard]] auto read(this fd &self, std::span<std::byte>)
-		-> std::expected<std::span<std::byte>, error>;
-
-private:
-	static constexpr int invalid_fileno = -1;
-
-	int m_fileno = invalid_fileno;
-};
-
-// Create a copy of this fd by calling dup().
-export [[nodiscard]] auto dup(fd const &self) -> std::expected<fd, error>;
-
-// Create a copy of this fd by calling dup2().  Note that because this results
-// in the existing fd and the new fd both being managed by an fd instance,
-// there are two potential cases that can cause problems:
-//
-// - dup()ing an fd to itself (a no-op)
-// - dup()ing an fd to an fd which is already managed by an fd instance
-//
-// In both of these cases, either use raw_dup() instead, or immediately call
-// release() on the returned fd to prevent the fd instance from closing it.
-export [[nodiscard]] auto dup(fd const &self, int newfd)
-	-> std::expected<fd, error>;
-
-// Create a copy of this fd by calling dup().
-export [[nodiscard]] auto raw_dup(fd const &self)
-	-> std::expected<int, error>;
-
-// Create a copy of this fd by calling dup2().
-export [[nodiscard]] auto raw_dup(fd const &self, int newfd)
-	-> std::expected<int, error>;
-
-// Return the fnctl flags for this fd.
-export [[nodiscard]] auto getflags(fd const &self)
-	-> std::expected<int, error>;
-
-// Replace the fnctl flags for this fd.
-export [[nodiscard]] auto replaceflags(fd &self, int newflags)
-	-> std::expected<void, error>;
-
-// Add bits to the fcntl flags for this fd.  Returns the new flags.
-export [[nodiscard]] auto setflags(fd &self, int newflags)
-	-> std::expected<int, error>;
-
-// Remove bits from the fcntl flags for this fd.  Returns the new flags.
-export [[nodiscard]] auto clearflags(fd &self, int clrflags)
-	-> std::expected<int, error>;
-
-// Return the fd flags for this fd.
-export [[nodiscard]] auto getfdflags(fd const &self)
-	-> std::expected<int, error>;
-
-// Replace the fd flags for this fd.
-export [[nodiscard]] auto replacefdflags(fd &self, int newflags)
-	-> std::expected<void, error>;
-
-// Add bits to the fd flags for this fd.  Returns the new flags.
-export [[nodiscard]] auto setfdflags(fd &self, int newflags)
-	-> std::expected<int, error>;
-
-// Remove bits from the fd flags for this fd.  Returns the new flags.
-export [[nodiscard]] auto clearfdflags(fd &self, int clrflags)
-	-> std::expected<int, error>;
-
-// Create two fds by calling pipe() and return them.
-export [[nodiscard]] auto pipe() -> std::expected<std::pair<fd, fd>, error>;
-
-/*
- * Write data to a file descriptor from the provided range.  Returns the
- * number of bytes written.
- */
-export [[nodiscard]] auto write(fd &file,
-				std::ranges::contiguous_range auto &&range)
-	-> std::expected<std::size_t, error>
-requires(sizeof(std::ranges::range_value_t<decltype(range)>) == 1)
-{
-	return file.write(as_bytes(std::span(range)));
-}
-
-/*
- * Read data from a file descriptor into the provided buffer.  Returns a
- * span containing the data that was read.
- */
-export [[nodiscard]] auto read(fd &file,
-			       std::ranges::contiguous_range auto &&range)
-	-> std::expected<
-		std::span<std::ranges::range_value_t<decltype(range)>>,
-		error>
-requires(sizeof(std::ranges::range_value_t<decltype(range)>) == 1)
-{
-	auto bspan = as_writable_bytes(std::span(range));
-	auto rspan = co_await file.read(bspan);
-	co_return std::span(range).subspan(0, rspan.size());
-}
-
-} // namespace nihil