Initial implementation of anonymous_pipe

Co-authored-by: Alphyr <47725341+a1phyr@users.noreply.github.com>
Co-authored-by: Jubilee <46493976+workingjubilee@users.noreply.github.com>
Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

1 files changed, 109 insertions, 0 deletions

diff --git a/library/std/src/sys/anonymous_pipe/windows.rs b/library/std/src/sys/anonymous_pipe/windows.rs
new file mode 100644
index 00000000000..81f95aa286a
--- /dev/null
+++ b/library/std/src/sys/anonymous_pipe/windows.rs
@@ -0,0 +1,109 @@
+use crate::{
+    io,
+    os::windows::io::{
+        AsHandle, AsRawHandle, BorrowedHandle, FromRawHandle, IntoRawHandle, OwnedHandle, RawHandle,
+    },
+    pipe::{PipeReader, PipeWriter},
+    process::Stdio,
+    sys::{handle::Handle, pipe::unnamed_anon_pipe},
+    sys_common::{FromInner, IntoInner},
+};
+
+pub(crate) type AnonPipe = Handle;
+
+#[inline]
+pub(crate) fn pipe() -> io::Result<(AnonPipe, AnonPipe)> {
+    unnamed_anon_pipe().map(|(rx, wx)| (rx.into_inner(), wx.into_inner()))
+}
+
+#[unstable(feature = "anonymous_pipe", issue = "127154")]
+impl AsHandle for PipeReader {
+    fn as_handle(&self) -> BorrowedHandle<'_> {
+        self.0.as_handle()
+    }
+}
+#[unstable(feature = "anonymous_pipe", issue = "127154")]
+impl AsRawHandle for PipeReader {
+    fn as_raw_handle(&self) -> RawHandle {
+        self.0.as_raw_handle()
+    }
+}
+
+#[unstable(feature = "anonymous_pipe", issue = "127154")]
+impl FromRawHandle for PipeReader {
+    unsafe fn from_raw_handle(raw_handle: RawHandle) -> Self {
+        Self(Handle::from_raw_handle(raw_handle))
+    }
+}
+#[unstable(feature = "anonymous_pipe", issue = "127154")]
+impl IntoRawHandle for PipeReader {
+    fn into_raw_handle(self) -> RawHandle {
+        self.0.into_raw_handle()
+    }
+}
+
+#[unstable(feature = "anonymous_pipe", issue = "127154")]
+impl From<PipeReader> for OwnedHandle {
+    fn from(pipe: PipeReader) -> Self {
+        Handle::into_inner(pipe.0)
+    }
+}
+#[unstable(feature = "anonymous_pipe", issue = "127154")]
+impl From<PipeReader> for Stdio {
+    fn from(pipe: PipeReader) -> Self {
+        Self::from(OwnedHandle::from(pipe))
+    }
+}
+
+#[unstable(feature = "anonymous_pipe", issue = "127154")]
+impl AsHandle for PipeWriter {
+    fn as_handle(&self) -> BorrowedHandle<'_> {
+        self.0.as_handle()
+    }
+}
+#[unstable(feature = "anonymous_pipe", issue = "127154")]
+impl AsRawHandle for PipeWriter {
+    fn as_raw_handle(&self) -> RawHandle {
+        self.0.as_raw_handle()
+    }
+}
+
+#[unstable(feature = "anonymous_pipe", issue = "127154")]
+impl FromRawHandle for PipeWriter {
+    unsafe fn from_raw_handle(raw_handle: RawHandle) -> Self {
+        Self(Handle::from_raw_handle(raw_handle))
+    }
+}
+#[unstable(feature = "anonymous_pipe", issue = "127154")]
+impl IntoRawHandle for PipeWriter {
+    fn into_raw_handle(self) -> RawHandle {
+        self.0.into_raw_handle()
+    }
+}
+
+#[unstable(feature = "anonymous_pipe", issue = "127154")]
+impl From<PipeWriter> for OwnedHandle {
+    fn from(pipe: PipeWriter) -> Self {
+        Handle::into_inner(pipe.0)
+    }
+}
+#[unstable(feature = "anonymous_pipe", issue = "127154")]
+impl From<PipeWriter> for Stdio {
+    fn from(pipe: PipeWriter) -> Self {
+        Self::from(OwnedHandle::from(pipe))
+    }
+}
+
+#[unstable(feature = "anonymous_pipe", issue = "127154")]
+impl From<OwnedHandle> for PipeReader {
+    fn from(owned_handle: OwnedHandle) -> Self {
+        Self(Handle::from_inner(owned_handle))
+    }
+}
+
+#[unstable(feature = "anonymous_pipe", issue = "127154")]
+impl From<OwnedHandle> for PipeWriter {
+    fn from(owned_handle: OwnedHandle) -> Self {
+        Self(Handle::from_inner(owned_handle))
+    }
+}