Comments (1)
The current failure here is:
┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈
error: argument patterns are not supported by #[auto-impl]
--> tests/compile-pass/self_by_value_mut.rs:9:19
|
9 | fn foo(&self, mut data: Data) {
| ^^^^^^^^
|
= help: please use a simple name like "foo" (but not `_`)
error[E0057]: this function takes 1 argument but 0 arguments were supplied
--> tests/compile-pass/self_by_value_mut.rs:7:1
|
7 | #[auto_impl(Fn)]
| ^^^^^^^^^^^^^^^^ an argument of type `Data` is missing
|
note: associated function defined here
--> $RUST/core/src/ops/function.rs
|
| extern "rust-call" fn call(&self, args: Args) -> Self::Output;
| ^^^^
= note: this error originates in the attribute macro `auto_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
help: provide the argument
|
7 | #[auto_impl(Fn)]({Data})
|
┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈
This is just a limitation we could work around for this style of simple pattern. In the meantime, you can write:
fn foo(&self, data: Data) {
let mut data = data;
data.id += 1;
}
from auto_impl.
Related Issues (20)
- Emit warning on empty proxy type list HOT 3
- Make `Fn*` types work with some generic methods HOT 1
- Relicense as MIT/Apache-2 HOT 4
- Newtype support HOT 9
- Add `!` (never) as proxy type HOT 3
- auto_impl for trait objects? HOT 3
- Compiler error running tests
- Make impls apply for trait objects HOT 9
- Add proper compile-fail tests HOT 2
- Investigate using `syn-mid` HOT 3
- Proposal: throw away diag.rs module and use proc-macro-error crate HOT 3
- Auto-impl trait objects? HOT 8
- Unable to use auto_impl with async-trait HOT 17
- Use `Span::mixed_site` HOT 3
- `no_std` support HOT 2
- const generics support HOT 1
- Errors when using an associated type defined in a supertrait HOT 6
- Doesn't work with generic associated types HOT 1
- request for crates.io minor release with syn 2 upgrade HOT 4
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from auto_impl.