1 files changed, 46 insertions, 0 deletions
diff --git a/crates/windivert/src/layer.rs b/crates/windivert/src/layer.rs
new file mode 100644
index 0000000..3c71588
--- /dev/null
+++ b/crates/windivert/src/layer.rs
@@ -0,0 +1,46 @@
+use windivert_sys::WinDivertLayer;
+
+/// Network type for typestate pattern.
+#[derive(Debug, Clone)]
+pub enum NetworkLayer {}
+/// Forward type for typestate pattern.
+#[derive(Debug, Clone)]
+pub enum ForwardLayer {}
+/// Flow type for typestate pattern.
+#[derive(Debug, Clone)]
+pub enum FlowLayer {}
+/// Socket type for typestate pattern.
+#[derive(Debug, Clone)]
+pub enum SocketLayer {}
+/// Reflect type for typestate pattern.
+#[derive(Debug, Clone)]
+pub enum ReflectLayer {}
+
+/// Trait for typestate pattern.
+pub trait WinDivertLayerTrait: sealed::Sealed + std::fmt::Debug + std::clone::Clone {}
+
+impl WinDivertLayerTrait for NetworkLayer {}
+
+impl WinDivertLayerTrait for ForwardLayer {}
+
+impl WinDivertLayerTrait for FlowLayer {}
+
+impl WinDivertLayerTrait for SocketLayer {}
+
+impl WinDivertLayerTrait for ReflectLayer {}
+
+impl WinDivertLayerTrait for WinDivertLayer {}
+
+impl WinDivertLayerTrait for () {}
+
+mod sealed {
+    pub trait Sealed {}
+
+    impl Sealed for () {}
+    impl Sealed for super::NetworkLayer {}
+    impl Sealed for super::ForwardLayer {}
+    impl Sealed for super::FlowLayer {}
+    impl Sealed for super::SocketLayer {}
+    impl Sealed for super::ReflectLayer {}
+    impl Sealed for super::WinDivertLayer {}
+}