feat(tvix/serde): add newtype & tuple deserialisation
Only missing enums at this point, but they're a bit of a beast. Change-Id: I4ad47c034851f9a8794c81f39a5149a8ac1826e8 Reviewed-on: https://cl.tvl.fyi/c/depot/+/7716 Tested-by: BuildkiteCI Reviewed-by: flokli <flokli@flokli.de> Autosubmit: tazjin <tazjin@tvl.su>
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2 changed files with 27 additions and 10 deletions
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@ -225,14 +225,14 @@ impl<'de> de::Deserializer<'de> for NixDeserializer {
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where
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V: de::Visitor<'de>,
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{
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todo!("how to represent this?");
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unimplemented!()
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}
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fn deserialize_byte_buf<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: de::Visitor<'de>,
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{
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todo!("how to represent this?");
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unimplemented!()
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}
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// Note that this can not distinguish between a serialisation of
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@ -261,24 +261,24 @@ impl<'de> de::Deserializer<'de> for NixDeserializer {
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fn deserialize_unit_struct<V>(
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self,
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name: &'static str,
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_name: &'static str,
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visitor: V,
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) -> Result<V::Value, Self::Error>
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where
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V: de::Visitor<'de>,
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{
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todo!("how to represent this?");
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self.deserialize_unit(visitor)
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}
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fn deserialize_newtype_struct<V>(
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self,
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name: &'static str,
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_name: &'static str,
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visitor: V,
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) -> Result<V::Value, Self::Error>
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where
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V: de::Visitor<'de>,
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{
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todo!("how to represent this?");
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visitor.visit_newtype_struct(self)
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}
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fn deserialize_seq<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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@ -296,23 +296,25 @@ impl<'de> de::Deserializer<'de> for NixDeserializer {
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Err(unexpected("list", &self.value))
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}
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fn deserialize_tuple<V>(self, len: usize, visitor: V) -> Result<V::Value, Self::Error>
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fn deserialize_tuple<V>(self, _len: usize, visitor: V) -> Result<V::Value, Self::Error>
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where
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V: de::Visitor<'de>,
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{
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todo!()
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// just represent tuples as lists ...
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self.deserialize_seq(visitor)
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}
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fn deserialize_tuple_struct<V>(
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self,
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name: &'static str,
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_name: &'static str,
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len: usize,
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visitor: V,
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) -> Result<V::Value, Self::Error>
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where
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V: de::Visitor<'de>,
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{
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todo!()
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// same as above
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self.deserialize_seq(visitor)
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}
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fn deserialize_map<V>(self, visitor: V) -> Result<V::Value, Self::Error>
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@ -80,3 +80,18 @@ fn deserialize_struct() {
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}
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);
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}
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#[test]
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fn deserialize_newtype() {
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#[derive(Debug, Deserialize, PartialEq)]
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struct Number(usize);
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let result: Number = from_str("42").expect("should deserialize");
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assert_eq!(result, Number(42));
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}
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#[test]
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fn deserialize_tuple() {
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let result: (String, usize) = from_str(r#" [ "foo" 42 ] "#).expect("should deserialize");
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assert_eq!(result, ("foo".into(), 42));
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}
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