feat: init

libraries/native_model/src/model.rs

@@ -0,0 +1,60 @@
+use crate::{DecodeResult, EncodeResult, Result};
+
+pub trait Model: Sized {
+    fn native_model_id() -> u32;
+    fn native_model_version() -> u32;
+
+    // --------------- Decode ---------------
+
+    fn native_model_decode_body(data: Vec<u8>) -> DecodeResult<Self>
+    where
+        Self: Sized;
+
+    fn native_model_decode_upgrade_body(data: Vec<u8>, version: u32) -> Result<Self>
+    where
+        Self: Sized;
+
+    fn native_model_decode(data: Vec<u8>) -> Result<(Self, u32)>
+    where
+        Self: Sized,
+    {
+        let native_model = crate::Wrapper::deserialize(&data[..]).unwrap();
+        let source_version = native_model.get_version();
+        let result =
+            Self::native_model_decode_upgrade_body(native_model.value().to_vec(), source_version)?;
+        Ok((result, source_version))
+    }
+
+    // --------------- Encode ---------------
+
+    fn native_model_encode_body(&self) -> EncodeResult<Vec<u8>>
+    where
+        Self: Sized;
+
+    fn native_model_encode_downgrade_body(self, version: u32) -> Result<Vec<u8>>
+    where
+        Self: Sized;
+
+    fn native_model_encode(&self) -> Result<Vec<u8>>
+    where
+        Self: Sized,
+    {
+        let mut data = self.native_model_encode_body()?;
+        crate::native_model_encode(
+            &mut data,
+            Self::native_model_id(),
+            Self::native_model_version(),
+        );
+        Ok(data)
+    }
+
+    fn native_model_encode_downgrade(self, version: u32) -> Result<Vec<u8>>
+    where
+        Self: Sized,
+    {
+        let version = version.clone();
+        let mut data = self.native_model_encode_downgrade_body(version)?;
+        crate::native_model_encode(&mut data, Self::native_model_id(), version);
+        Ok(data)
+    }
+}