4c8d00a3ec
Previously we would only generate a list of synthetic implementations for two well known traits – Send and Sync. With this patch all the auto traits known to rustc are considered. This includes such traits like Unpin and user’s own traits. Sadly the implementation still iterates through the list of crate items and checks them against the traits, which for non-std crates containing their own auto-traits will still not include types defined in std/core. It is an improvement nontheless.
20 lines
562 B
Rust
20 lines
562 B
Rust
pub trait Signal {
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type Item;
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}
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pub trait Signal2 {
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type Item2;
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}
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impl<B, C> Signal2 for B where B: Signal<Item = C> {
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type Item2 = C;
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}
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// @has issue_50159/struct.Switch.html
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// @has - '//code' 'impl<B> Send for Switch<B> where <B as Signal>::Item: Send'
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// @has - '//code' 'impl<B> Sync for Switch<B> where <B as Signal>::Item: Sync'
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// @count - '//*[@id="implementations-list"]/*[@class="impl"]' 0
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// @count - '//*[@id="synthetic-implementations-list"]/*[@class="impl"]' 5
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pub struct Switch<B: Signal> {
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pub inner: <B as Signal2>::Item2,
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}
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