Fix hygiene of macro-generated local variable accesses in serde(with) wrappers #2845
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error[E0424]: expected value, found module `self`
--> test_suite/tests/regression/issue2844.rs:13:19
|
5 | #[derive(Serialize, Deserialize)]
| --------- this function has a `self` parameter, but a macro invocation can only access identifiers it receives from parameters
...
13 | declare_in_macro!("with");
| ^^^^^^ `self` value is a keyword only available in methods with a `self` parameter
error[E0425]: cannot find value `__s` in this scope
--> test_suite/tests/regression/issue2844.rs:13:19
|
13 | declare_in_macro!("with");
| ^^^^^^ not found in this scope
error[E0425]: cannot find value `__deserializer` in this scope
--> test_suite/tests/regression/issue2844.rs:13:19
|
13 | declare_in_macro!("with");
| ^^^^^^ not found in this scope
Mingun
reviewed
Oct 22, 2024
| let (de_impl_generics, de_ty_generics, ty_generics, where_clause) = | ||
| split_with_de_lifetime(params); | ||
| let delife = params.borrowed.de_lifetime(); | ||
| let deserializer_var = quote!(__deserializer); |
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I think, it would be useful to explain why this line (and in other similar places) placed in it's own TokenStream so this part was not accidentally optimized (yes, new tests will catch that, but this can create unnecessary friction for developers whos not aware of that problem). Even reference to GitHub issue with very short comment will be enougth
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Fixes #2844.