Witch of Git - ivy/blob - src/main.rs

   1 use ess::{self, Sexp, parser::ParseError};
   2 use std::io::{self, Read};
   3
   4 fn parse(input: &str) -> Result<Sexp, ParseError> {
   5     let (sexp, rest) = ess::parse_one(input)?;
   6     if !rest.trim().is_empty() {
   7         return Err(ParseError::Unexpected('\0', sexp.get_loc().1));
   8     }
   9     Ok(sexp)
  10 }
  11
  12 fn main() -> io::Result<()> {
  13     let stdin = std::io::stdin();
  14     let mut text = String::new();
  15     stdin.lock().read_to_string(&mut text)?;
  16     let item = match parse(&text) {
  17         Ok(item) => item,
  18         Err(err) => {
  19             println!("{:?}", err);
  20             std::process::exit(1);
  21         }
  22     };
  23     println!("{:?}", item);
  24     Ok(())
  25 }