Add deserializer for amf0 value and fix amf0 visitor fns #441
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TroyKomodo
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❌ 4 Tests Failed:
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TroyKomodo
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| serde::forward_to_deserialize_any! { | ||
| bool f64 char str string unit | ||
| seq map newtype_struct tuple | ||
| struct enum ignored_any identifier |
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Perhaps in a future ticket we should take into account the struct field ordering, see samscott89/serde_qs#128 as an example of how to do that.
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I made a ticket for it for now, I might tackle it in the future: CLOUD-123
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TroyKomodo
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crates/amf0/src/de/mod.rs
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| // same as before about the string stuff | ||
| // let bytes = [Amf0Marker::String as u8]; | ||
| // let err = from_buf::<()>(Bytes::from_owner(bytes)).unwrap_err(); | ||
| // assert!(matches!( | ||
| // err, | ||
| // Amf0Error::UnexpectedType { | ||
| // expected: [Amf0Marker::Null, Amf0Marker::Undefined], | ||
| // got: Amf0Marker::String | ||
| // } | ||
| // )); |
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Why is this test commented out?
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It was a leftover from when I was confused about how to handle the errors from attempting to deserialize the String. I think we can delete it though since it's just checking the error output.
TroyKomodo
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crates/amf0/src/de/mod.rs
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| @@ -202,8 +200,12 @@ where | |||
| where | |||
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Removing this causes the optional() test to fail. My current understanding is that forwarding to any doesn't handle the null properly so it keeps looping over and over causing a stack overflow.
TroyKomodo
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Jun 6, 2025
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@philipch07 i pushed a commit showing sort of what i was looking for. What is currently outstanding on this PR is testing forward / backward ser-de impls. Meaning that everytime we serialize should be able to be deserialized back. So the goal is to now: test serde-back-and-forth for all types Sort of like this flow let rust_type = something;
let amf0_bytes = rust_type.encode();
let rust_type2 = amf0_bytes.decode();
assert_eq(rust_type, rust_type2);
let amf0_value= amf0_bytes.decode();
let rust_type3 = amf0_value.decode();
assert_eq(rust_type, rust_type3); |
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…to include bytes-util change from troy
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The deserializer is a qol feature for people using amf0.
The current amf0 visitor functions do not properly call the corresponding visit functions, for example, an
i8currently callsself.deserialize_i64(visitor)(incorrect) instead ofself.deserialize_i8(visitor)(correct).For more on the above topic, see the Notion doc. Just a heads up that it's also missing a rule which is mentioned in Troy's other #441 (comment)
Additionally this PR aims to address the following from Troy's comment (see below):