syntax/
hacks.rs

1//! Things which exist to solve practical issues, but which shouldn't exist.
2//!
3//! Please avoid adding new usages of the functions in this module
4
5use parser::Edition;
6
7use crate::{AstNode, ast};
8
9pub fn parse_expr_from_str(s: &str, edition: Edition) -> Option<ast::Expr> {
10    let s = s.trim();
11
12    let file = ast::SourceFile::parse(
13        // Need a newline because the text may contain line comments.
14        &format!("const _: () = ({s}\n);"),
15        edition,
16    );
17    let expr = file.syntax_node().descendants().find_map(ast::ParenExpr::cast)?;
18    // Can't check the text because the original text may contain whitespace and comments.
19    // Wrap in parentheses to better allow for verification. Of course, the real fix is
20    // to get rid of this hack.
21    expr.expr()
22}
syntax/hacks.rs

syntax/
hacks.rs
