bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/syntax/src/lib.rs')
-rw-r--r--crates/syntax/src/lib.rs22
1 files changed, 22 insertions, 0 deletions
diff --git a/crates/syntax/src/lib.rs b/crates/syntax/src/lib.rs
index b755de86d3..f562da1503 100644
--- a/crates/syntax/src/lib.rs
+++ b/crates/syntax/src/lib.rs
@@ -182,6 +182,28 @@ impl SourceFile {
}
}
+impl ast::Literal {
+ pub fn parse(text: &str) -> Option<Parse<ast::Literal>> {
+ let lexed = parser::LexedStr::new(text);
+ let parser_input = lexed.to_input();
+ let parser_output = parser::TopEntryPoint::Expr.parse(&parser_input);
+ let (green, mut errors, _) = parsing::build_tree(lexed, parser_output);
+ let root = SyntaxNode::new_root(green.clone());
+
+ errors.extend(validation::validate(&root));
+
+ if root.kind() == SyntaxKind::LITERAL {
+ Some(Parse {
+ green,
+ errors: if errors.is_empty() { None } else { Some(errors.into()) },
+ _ty: PhantomData,
+ })
+ } else {
+ None
+ }
+ }
+}
+
impl ast::TokenTree {
pub fn reparse_as_comma_separated_expr(self) -> Parse<ast::MacroEagerInput> {
let tokens = self.syntax().descendants_with_tokens().filter_map(NodeOrToken::into_token);