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

   1 use ess::{self, parser::ParseError, Sexp};
   2 use std::io::{self, Read};
   3
   4 mod ast;
   5 use ast::Ast;
   6
   7 fn parse(input: &str) -> Result<Sexp, ParseError> {
   8     let (sexp, rest) = ess::parse_one(input)?;
   9     if !rest.trim().is_empty() {
  10         return Err(ParseError::Unexpected('\0', sexp.get_loc().1));
  11     }
  12     Ok(sexp)
  13 }
  14
  15 fn main() -> io::Result<()> {
  16     let stdin = std::io::stdin();
  17     let mut text = String::new();
  18     stdin.lock().read_to_string(&mut text)?;
  19     let sexp = match parse(&text) {
  20         Ok(item) => item,
  21         Err(err) => {
  22             println!("{:?}", err);
  23             std::process::exit(1);
  24         }
  25     };
  26     let ast = match Ast::parse(&sexp) {
  27         Ok(ast) => ast,
  28         Err(err) => {
  29             println!("{}", err);
  30             std::process::exit(1);
  31         }
  32     };
  33     println!("{:#?}", ast);
  34     Ok(())
  35 }