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fix: Simplify macro statement expansion handling

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This commit is contained in:
Lukas Wirth 2022-07-01 14:43:57 +02:00
parent f8c416e1b9
commit 531e152390
10 changed files with 155 additions and 110 deletions
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7
crates/syntax/src/ptr.rs
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@ -67,6 +67,13 @@ impl<N: AstNode> AstPtr<N> {
Some(AstPtr { raw: self.raw, _ty: PhantomData })
}
pub fn upcast<M: AstNode>(self) -> AstPtr<M>
where
N: Into<M>,
{
AstPtr { raw: self.raw, _ty: PhantomData }
}
/// Like `SyntaxNodePtr::cast` but the trait bounds work out.
pub fn try_from_raw(raw: SyntaxNodePtr) -> Option<AstPtr<N>> {
N::can_cast(raw.kind()).then(|| AstPtr { raw, _ty: PhantomData })