1 // Copyright 2015 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.
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.
13 pub fn prev_char(s: &str, mut i: usize) -> usize {
14 if i == 0 { return 0; }
17 while !s.is_char_boundary(i) {
24 pub fn next_char(s: &str, mut i: usize) -> usize {
25 if i >= s.len() { return s.len(); }
27 while !s.is_char_boundary(i) {
34 pub fn make_indent(width: usize) -> String {
35 let mut indent = String::with_capacity(width);