bjoernager/rust
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Only regular coroutines have movability

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This commit is contained in:
Michael Goulet 2023-12-25 16:56:12 +00:00
parent 909dd864f1
commit 3320c09eab
25 changed files with 130 additions and 104 deletions
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20
compiler/rustc_hir/src/hir.rs
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@ -956,10 +956,7 @@ pub enum ClosureKind {
/// we've found a `yield`. These can arise either from "plain" coroutine
/// usage (e.g. `let x = || { yield (); }`) or from a desugared expression
/// (e.g. `async` and `gen` blocks).
// FIXME(coroutines): We could probably remove movability here -- it can be deduced
// from the `CoroutineKind` in all cases (except for "plain" coroutines, which could
// carry the movability in the variant).
Coroutine(CoroutineKind, Movability),
Coroutine(CoroutineKind),
}
/// A block of statements `{ .. }`, which may have a label (in this case the
@ -1364,7 +1361,18 @@ pub enum CoroutineKind {
Desugared(CoroutineDesugaring, CoroutineSource),
/// A coroutine literal created via a `yield` inside a closure.
Coroutine,
Coroutine(Movability),
}
impl CoroutineKind {
pub fn movability(self) -> Movability {
match self {
CoroutineKind::Desugared(CoroutineDesugaring::Async, _)
| CoroutineKind::Desugared(CoroutineDesugaring::AsyncGen, _) => Movability::Static,
CoroutineKind::Desugared(CoroutineDesugaring::Gen, _) => Movability::Movable,
CoroutineKind::Coroutine(mov) => mov,
}
}
}
impl fmt::Display for CoroutineKind {
@ -1374,7 +1382,7 @@ impl fmt::Display for CoroutineKind {
d.fmt(f)?;
k.fmt(f)
}
CoroutineKind::Coroutine => f.write_str("coroutine"),
CoroutineKind::Coroutine(_) => f.write_str("coroutine"),
}
}
}