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1 | // Copyright 2014 The Rust Project Developers. See the COPYRIGHT |
2 | // file at the top-level directory of this distribution and at | |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
5 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
6 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
7 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | |
8 | // option. This file may not be copied, modified, or distributed | |
9 | // except according to those terms. | |
10 | ||
c34b1796 | 11 | // pretty-expanded FIXME #23616 |
1a4d82fc | 12 | |
54a0048b SL |
13 | #![feature(question_mark)] |
14 | ||
c34b1796 AL |
15 | use std::fs::File; |
16 | use std::io::{self, BufReader, Read}; | |
17 | ||
18 | struct Lexer<R: Read> | |
1a4d82fc | 19 | { |
c34b1796 | 20 | reader: BufReader<R>, |
1a4d82fc JJ |
21 | } |
22 | ||
c34b1796 | 23 | impl<R: Read> Lexer<R> |
1a4d82fc JJ |
24 | { |
25 | pub fn new_from_reader(r: R) -> Lexer<R> | |
26 | { | |
c34b1796 | 27 | Lexer{reader: BufReader::new(r)} |
1a4d82fc JJ |
28 | } |
29 | ||
c34b1796 | 30 | pub fn new_from_file(p: &str) -> io::Result<Lexer<File>> |
1a4d82fc | 31 | { |
54a0048b | 32 | Ok(Lexer::new_from_reader(File::open(p)?)) |
1a4d82fc JJ |
33 | } |
34 | ||
c34b1796 | 35 | pub fn new_from_str<'a>(s: &'a str) -> Lexer<&'a [u8]> |
1a4d82fc | 36 | { |
c34b1796 | 37 | Lexer::new_from_reader(s.as_bytes()) |
1a4d82fc JJ |
38 | } |
39 | } | |
40 | ||
41 | fn main() {} |