Function parse_str

pub fn parse_str<T: Parse>(s: &str) -> Result<T>

Available on crate feature parsing only.

Parse a string of Rust code into the chosen syntax tree node.

This function enforces that the input is fully parsed. If there are any unparsed tokens at the end of the stream, an error is returned.

Hygiene

Every span in the resulting syntax tree will be set to resolve at the macro call site.

Examples

use syn::{Expr, Result};

fn run() -> Result<()> {
    let code = "assert_eq!(u8::max_value(), 255)";
    let expr = syn::parse_str::<Expr>(code)?;
    println!("{:#?}", expr);
    Ok(())
}