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Cast SyntaxNodePtr to AstPtr directly

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This commit is contained in:
Phil Ellison 2019-08-12 20:39:11 +01:00 committed by Aleksey Kladov
parent c8911e872e
commit 200470692f
2 changed files with 10 additions and 14 deletions
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17
crates/ra_hir/src/expr/validation.rs
View File

@ -145,21 +145,10 @@ impl<'a, 'b> ExprValidator<'a, 'b> {
if params.len() == 2 && &params[0] == &mismatch.actual {
let source_map = self.func.body_source_map(db);
let file_id = self.func.source(db).file_id;
let parse = db.parse(file_id.original_file(db));
let source_file = parse.tree();
let expr_syntax = source_map.expr_syntax(id);
if expr_syntax.is_none() {
return;
}
let expr_syntax = expr_syntax.unwrap();
let node = expr_syntax.to_node(source_file.syntax());
let ast = ast::Expr::cast(node);
if ast.is_none() {
return;
}
let ast = ast.unwrap();
self.sink.push(MissingOkInTailExpr { file: file_id, expr: AstPtr::new(&ast) });
if let Some(expr) = source_map.expr_syntax(id).and_then(|n| n.cast::<ast::Expr>()) {
self.sink.push(MissingOkInTailExpr { file: file_id, expr });
}
}
}
}

7
crates/ra_syntax/src/ptr.rs
View File

@ -31,6 +31,13 @@ impl SyntaxNodePtr {
pub fn kind(self) -> SyntaxKind {
self.kind
}
pub fn cast<N: AstNode>(self) -> Option<AstPtr<N>> {
if !N::can_cast(self.kind()) {
return None;
}
Some(AstPtr { raw: self, _ty: PhantomData })
}
}
/// Like `SyntaxNodePtr`, but remembers the type of node