| //! 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::{ast, AstNode}; |
| |
| 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() |
| } |
