bjoernager/rust
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Decouple DummyAstNode and DummyResult.

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They are two different ways of creating dummy results, with two
different purposes. Their implementations are separate except for
crates, where `DummyResult` depends on `DummyAstNode`.

This commit removes that dependency, so they are now fully separate. It
also expands the comment on `DummyAstNode`.
This commit is contained in:
Nicholas Nethercote 2024-03-01 13:00:06 +11:00
parent 279c9ba260
commit b5d7da878f
2 changed files with 16 additions and 3 deletions
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5
compiler/rustc_ast/src/mut_visit.rs
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@ -1604,7 +1604,10 @@ pub fn noop_visit_capture_by<T: MutVisitor>(capture_by: &mut CaptureBy, vis: &mu
}
}
/// Some value for the AST node that is valid but possibly meaningless.
/// Some value for the AST node that is valid but possibly meaningless. Similar
/// to `Default` but not intended for wide use. The value will never be used
/// meaningfully, it exists just to support unwinding in `visit_clobber` in the
/// case where its closure panics.
pub trait DummyAstNode {
fn dummy() -> Self;
}