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Auto merge of #13949 - WaffleLapkin:either_ast_node, r=Veykril

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minor: implement `AstNode` for `Either`

Makes code a little bit nicer
This commit is contained in:
bors 2023-01-14 13:50:11 +00:00
commit c78b9f0068
2 changed files with 31 additions and 8 deletions
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9
crates/hir/src/semantics.rs
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@ -1472,14 +1472,7 @@ impl<'db> SemanticsImpl<'db> {
}
fn is_inside_unsafe(&self, expr: &ast::Expr) -> bool {
let item_or_variant = |ancestor: SyntaxNode| {
if ast::Item::can_cast(ancestor.kind()) {
ast::Item::cast(ancestor).map(Either::Left)
} else {
ast::Variant::cast(ancestor).map(Either::Right)
}
};
let Some(enclosing_item) = expr.syntax().ancestors().find_map(item_or_variant) else { return false };
let Some(enclosing_item) = expr.syntax().ancestors().find_map(Either::<ast::Item, ast::Variant>::cast) else { return false };
let def = match &enclosing_item {
Either::Left(ast::Item::Fn(it)) if it.unsafe_token().is_some() => return true,