| //! Things which exist to solve practical issues, but which shouldn't exist. | |
| //! | |
| //! Please avoid adding new usages of the functions in this module | |
| use parser::Edition; | |
| use crate::{AstNode, ast}; | |
| pub fn parse_expr_from_str(s: &str, edition: Edition) -> Option<ast::Expr> { | |
| let s = s.trim(); | |
| let file = ast::SourceFile::parse( | |
| // Need a newline because the text may contain line comments. | |
| &format!("const _: () = ({s}\n);"), | |
| edition, | |
| ); | |
| let expr = file.syntax_node().descendants().find_map(ast::ParenExpr::cast)?; | |
| // Can't check the text because the original text may contain whitespace and comments. | |
| // Wrap in parentheses to better allow for verification. Of course, the real fix is | |
| // to get rid of this hack. | |
| expr.expr() | |
| } |