Allow direct struct field matching from binary token #127
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nickbabcock
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The binary token resolution leaves some efficiency on the table as it
first translates the token to a string and then matches the string
against struct fields.
The PR asks the question, what if we reduce the operation to just
matching on the 16bit value? Remove the translation step and simplify
matching.
This is what I envision and technically now works in this PR:
```rust
struct MyStruct {
#[jomini(token = 0x2d82)]
field1: String,
}
```
Large caveats:
- Direct matching is only done when the string resolution fails
- And must use `FailedResolveStrategy::Visit`
The first caveat is the largest problem as we don't want to remove
tokens from the token list because token resolution needs to work on
values (they aren't always keys).
I think the best course of action will be to classify each struct as if
fields can be directly resolved or if it needs translation based on the
presence of the `#[jomini(token)]` attribute.
For direct structs, swap the request to `deserialize_identifier` to
`deserialize_u16` to give a hint that tokens should not be resolved.
Some unanswered questions:
- Do the efficiency gains justify the complication?
- I know PDS doesn't want the token list revealed, I wonder if this is
obfuscated enough to be ok.
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The binary token resolution leaves some efficiency on the table as it first translates the token to a string and then matches the string against struct fields.
The PR asks the question, what if we reduce the operation to just matching on the 16bit value? Remove the translation step and simplify matching.
This is what I envision and technically now works in this PR:
Large caveats:
classify each struct if fields can be directly resolved or if it needs translation based on the presence of the
#[jomini(token)]attribute.For direct structs, swap the request to
deserialize_identifiertodeserialize_u16to give a hint that tokens should not be resolved.Some unanswered questions: